7221 lines
184 KiB
C
7221 lines
184 KiB
C
/* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
|
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Copyright (C) 1994-2015 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support.
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This file is part of GAS, the GNU Assembler.
|
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "as.h"
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#include "safe-ctype.h"
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#include "subsegs.h"
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#include "dw2gencfi.h"
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#include "opcode/ppc.h"
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#ifdef OBJ_ELF
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#include "elf/ppc.h"
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#include "elf/ppc64.h"
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#include "dwarf2dbg.h"
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#endif
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#ifdef TE_PE
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#include "coff/pe.h"
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#endif
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#ifdef OBJ_XCOFF
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#include "coff/xcoff.h"
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#include "libxcoff.h"
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#endif
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/* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
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/* Tell the main code what the endianness is. */
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extern int target_big_endian;
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/* Whether or not, we've set target_big_endian. */
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static int set_target_endian = 0;
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/* Whether to use user friendly register names. */
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#ifndef TARGET_REG_NAMES_P
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#ifdef TE_PE
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#define TARGET_REG_NAMES_P TRUE
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#else
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#define TARGET_REG_NAMES_P FALSE
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#endif
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#endif
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/* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
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HIGHESTA. */
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/* #lo(value) denotes the least significant 16 bits of the indicated. */
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#define PPC_LO(v) ((v) & 0xffff)
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/* #hi(value) denotes bits 16 through 31 of the indicated value. */
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#define PPC_HI(v) (((v) >> 16) & 0xffff)
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/* #ha(value) denotes the high adjusted value: bits 16 through 31 of
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the indicated value, compensating for #lo() being treated as a
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signed number. */
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#define PPC_HA(v) PPC_HI ((v) + 0x8000)
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/* #higher(value) denotes bits 32 through 47 of the indicated value. */
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#define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
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/* #highera(value) denotes bits 32 through 47 of the indicated value,
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compensating for #lo() being treated as a signed number. */
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#define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
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/* #highest(value) denotes bits 48 through 63 of the indicated value. */
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#define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
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/* #highesta(value) denotes bits 48 through 63 of the indicated value,
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compensating for #lo being treated as a signed number. */
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#define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
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#define SEX16(val) (((val) ^ 0x8000) - 0x8000)
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/* For the time being on ppc64, don't report overflow on @h and @ha
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applied to constants. */
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#define REPORT_OVERFLOW_HI 0
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static bfd_boolean reg_names_p = TARGET_REG_NAMES_P;
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static void ppc_macro (char *, const struct powerpc_macro *);
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static void ppc_byte (int);
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#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
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static void ppc_tc (int);
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static void ppc_machine (int);
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#endif
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#ifdef OBJ_XCOFF
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static void ppc_comm (int);
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static void ppc_bb (int);
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static void ppc_bc (int);
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static void ppc_bf (int);
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static void ppc_biei (int);
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static void ppc_bs (int);
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static void ppc_eb (int);
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static void ppc_ec (int);
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static void ppc_ef (int);
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static void ppc_es (int);
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static void ppc_csect (int);
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static void ppc_dwsect (int);
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static void ppc_change_csect (symbolS *, offsetT);
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static void ppc_function (int);
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static void ppc_extern (int);
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static void ppc_lglobl (int);
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static void ppc_ref (int);
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static void ppc_section (int);
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static void ppc_named_section (int);
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static void ppc_stabx (int);
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static void ppc_rename (int);
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static void ppc_toc (int);
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static void ppc_xcoff_cons (int);
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static void ppc_vbyte (int);
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#endif
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#ifdef OBJ_ELF
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static void ppc_elf_rdata (int);
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static void ppc_elf_lcomm (int);
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static void ppc_elf_localentry (int);
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static void ppc_elf_abiversion (int);
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#endif
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#ifdef TE_PE
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static void ppc_previous (int);
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static void ppc_pdata (int);
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static void ppc_ydata (int);
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static void ppc_reldata (int);
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static void ppc_rdata (int);
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static void ppc_ualong (int);
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static void ppc_znop (int);
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static void ppc_pe_comm (int);
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static void ppc_pe_section (int);
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static void ppc_pe_function (int);
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static void ppc_pe_tocd (int);
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#endif
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/* Generic assembler global variables which must be defined by all
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targets. */
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#ifdef OBJ_ELF
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/* This string holds the chars that always start a comment. If the
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pre-processor is disabled, these aren't very useful. The macro
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tc_comment_chars points to this. We use this, rather than the
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usual comment_chars, so that we can switch for Solaris conventions. */
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static const char ppc_solaris_comment_chars[] = "#!";
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static const char ppc_eabi_comment_chars[] = "#";
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#ifdef TARGET_SOLARIS_COMMENT
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const char *ppc_comment_chars = ppc_solaris_comment_chars;
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#else
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const char *ppc_comment_chars = ppc_eabi_comment_chars;
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#endif
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#else
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const char comment_chars[] = "#";
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#endif
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/* Characters which start a comment at the beginning of a line. */
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const char line_comment_chars[] = "#";
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/* Characters which may be used to separate multiple commands on a
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single line. */
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const char line_separator_chars[] = ";";
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/* Characters which are used to indicate an exponent in a floating
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point number. */
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const char EXP_CHARS[] = "eE";
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/* Characters which mean that a number is a floating point constant,
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as in 0d1.0. */
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const char FLT_CHARS[] = "dD";
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/* Anything that can start an operand needs to be mentioned here,
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to stop the input scrubber eating whitespace. */
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const char ppc_symbol_chars[] = "%[";
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/* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
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int ppc_cie_data_alignment;
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/* The dwarf2 minimum instruction length. */
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int ppc_dwarf2_line_min_insn_length;
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/* More than this number of nops in an alignment op gets a branch
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instead. */
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unsigned long nop_limit = 4;
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/* The type of processor we are assembling for. This is one or more
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of the PPC_OPCODE flags defined in opcode/ppc.h. */
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ppc_cpu_t ppc_cpu = 0;
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ppc_cpu_t sticky = 0;
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/* Value for ELF e_flags EF_PPC64_ABI. */
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unsigned int ppc_abiversion = 0;
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/* Flags set on encountering toc relocs. */
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enum {
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has_large_toc_reloc = 1,
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has_small_toc_reloc = 2
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} toc_reloc_types;
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/* Warn on emitting data to code sections. */
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int warn_476;
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unsigned long last_insn;
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segT last_seg;
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subsegT last_subseg;
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/* The target specific pseudo-ops which we support. */
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const pseudo_typeS md_pseudo_table[] =
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{
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/* Pseudo-ops which must be overridden. */
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{ "byte", ppc_byte, 0 },
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#ifdef OBJ_XCOFF
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/* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
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legitimately belong in the obj-*.c file. However, XCOFF is based
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on COFF, and is only implemented for the RS/6000. We just use
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obj-coff.c, and add what we need here. */
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{ "comm", ppc_comm, 0 },
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{ "lcomm", ppc_comm, 1 },
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{ "bb", ppc_bb, 0 },
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{ "bc", ppc_bc, 0 },
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{ "bf", ppc_bf, 0 },
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{ "bi", ppc_biei, 0 },
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{ "bs", ppc_bs, 0 },
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{ "csect", ppc_csect, 0 },
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{ "dwsect", ppc_dwsect, 0 },
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{ "data", ppc_section, 'd' },
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{ "eb", ppc_eb, 0 },
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{ "ec", ppc_ec, 0 },
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{ "ef", ppc_ef, 0 },
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{ "ei", ppc_biei, 1 },
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{ "es", ppc_es, 0 },
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{ "extern", ppc_extern, 0 },
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{ "function", ppc_function, 0 },
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{ "lglobl", ppc_lglobl, 0 },
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{ "ref", ppc_ref, 0 },
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{ "rename", ppc_rename, 0 },
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{ "section", ppc_named_section, 0 },
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{ "stabx", ppc_stabx, 0 },
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{ "text", ppc_section, 't' },
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{ "toc", ppc_toc, 0 },
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{ "long", ppc_xcoff_cons, 2 },
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{ "llong", ppc_xcoff_cons, 3 },
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{ "word", ppc_xcoff_cons, 1 },
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{ "short", ppc_xcoff_cons, 1 },
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{ "vbyte", ppc_vbyte, 0 },
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#endif
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#ifdef OBJ_ELF
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{ "llong", cons, 8 },
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{ "rdata", ppc_elf_rdata, 0 },
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{ "rodata", ppc_elf_rdata, 0 },
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{ "lcomm", ppc_elf_lcomm, 0 },
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{ "localentry", ppc_elf_localentry, 0 },
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{ "abiversion", ppc_elf_abiversion, 0 },
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#endif
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||
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#ifdef TE_PE
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/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
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{ "previous", ppc_previous, 0 },
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{ "pdata", ppc_pdata, 0 },
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{ "ydata", ppc_ydata, 0 },
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{ "reldata", ppc_reldata, 0 },
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{ "rdata", ppc_rdata, 0 },
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{ "ualong", ppc_ualong, 0 },
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{ "znop", ppc_znop, 0 },
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{ "comm", ppc_pe_comm, 0 },
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{ "lcomm", ppc_pe_comm, 1 },
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||
{ "section", ppc_pe_section, 0 },
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{ "function", ppc_pe_function,0 },
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{ "tocd", ppc_pe_tocd, 0 },
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||
#endif
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||
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#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
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{ "tc", ppc_tc, 0 },
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{ "machine", ppc_machine, 0 },
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#endif
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||
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{ NULL, NULL, 0 }
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||
};
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||
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||
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/* Predefined register names if -mregnames (or default for Windows NT).
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In general, there are lots of them, in an attempt to be compatible
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||
with a number of other Windows NT assemblers. */
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||
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||
/* Structure to hold information about predefined registers. */
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||
struct pd_reg
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||
{
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||
char *name;
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||
int value;
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||
};
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||
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||
/* List of registers that are pre-defined:
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||
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Each general register has predefined names of the form:
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1. r<reg_num> which has the value <reg_num>.
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||
2. r.<reg_num> which has the value <reg_num>.
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||
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Each floating point register has predefined names of the form:
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1. f<reg_num> which has the value <reg_num>.
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||
2. f.<reg_num> which has the value <reg_num>.
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||
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||
Each vector unit register has predefined names of the form:
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||
1. v<reg_num> which has the value <reg_num>.
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||
2. v.<reg_num> which has the value <reg_num>.
|
||
|
||
Each condition register has predefined names of the form:
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1. cr<reg_num> which has the value <reg_num>.
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||
2. cr.<reg_num> which has the value <reg_num>.
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||
|
||
There are individual registers as well:
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sp or r.sp has the value 1
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||
rtoc or r.toc has the value 2
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fpscr has the value 0
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||
xer has the value 1
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||
lr has the value 8
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||
ctr has the value 9
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||
pmr has the value 0
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||
dar has the value 19
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dsisr has the value 18
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||
dec has the value 22
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||
sdr1 has the value 25
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||
srr0 has the value 26
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||
srr1 has the value 27
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||
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||
The table is sorted. Suitable for searching by a binary search. */
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||
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||
static const struct pd_reg pre_defined_registers[] =
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||
{
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||
{ "cr.0", 0 }, /* Condition Registers */
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||
{ "cr.1", 1 },
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||
{ "cr.2", 2 },
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||
{ "cr.3", 3 },
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||
{ "cr.4", 4 },
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||
{ "cr.5", 5 },
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||
{ "cr.6", 6 },
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||
{ "cr.7", 7 },
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||
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||
{ "cr0", 0 },
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||
{ "cr1", 1 },
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||
{ "cr2", 2 },
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||
{ "cr3", 3 },
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{ "cr4", 4 },
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||
{ "cr5", 5 },
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||
{ "cr6", 6 },
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{ "cr7", 7 },
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||
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||
{ "ctr", 9 },
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{ "dar", 19 }, /* Data Access Register */
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||
{ "dec", 22 }, /* Decrementer */
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||
{ "dsisr", 18 }, /* Data Storage Interrupt Status Register */
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||
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||
{ "f.0", 0 }, /* Floating point registers */
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||
{ "f.1", 1 },
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||
{ "f.10", 10 },
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||
{ "f.11", 11 },
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||
{ "f.12", 12 },
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||
{ "f.13", 13 },
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||
{ "f.14", 14 },
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||
{ "f.15", 15 },
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||
{ "f.16", 16 },
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||
{ "f.17", 17 },
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||
{ "f.18", 18 },
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||
{ "f.19", 19 },
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||
{ "f.2", 2 },
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||
{ "f.20", 20 },
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||
{ "f.21", 21 },
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||
{ "f.22", 22 },
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||
{ "f.23", 23 },
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||
{ "f.24", 24 },
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||
{ "f.25", 25 },
|
||
{ "f.26", 26 },
|
||
{ "f.27", 27 },
|
||
{ "f.28", 28 },
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||
{ "f.29", 29 },
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||
{ "f.3", 3 },
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||
{ "f.30", 30 },
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||
{ "f.31", 31 },
|
||
|
||
{ "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
|
||
{ "f.33", 33 },
|
||
{ "f.34", 34 },
|
||
{ "f.35", 35 },
|
||
{ "f.36", 36 },
|
||
{ "f.37", 37 },
|
||
{ "f.38", 38 },
|
||
{ "f.39", 39 },
|
||
{ "f.4", 4 },
|
||
{ "f.40", 40 },
|
||
{ "f.41", 41 },
|
||
{ "f.42", 42 },
|
||
{ "f.43", 43 },
|
||
{ "f.44", 44 },
|
||
{ "f.45", 45 },
|
||
{ "f.46", 46 },
|
||
{ "f.47", 47 },
|
||
{ "f.48", 48 },
|
||
{ "f.49", 49 },
|
||
{ "f.5", 5 },
|
||
{ "f.50", 50 },
|
||
{ "f.51", 51 },
|
||
{ "f.52", 52 },
|
||
{ "f.53", 53 },
|
||
{ "f.54", 54 },
|
||
{ "f.55", 55 },
|
||
{ "f.56", 56 },
|
||
{ "f.57", 57 },
|
||
{ "f.58", 58 },
|
||
{ "f.59", 59 },
|
||
{ "f.6", 6 },
|
||
{ "f.60", 60 },
|
||
{ "f.61", 61 },
|
||
{ "f.62", 62 },
|
||
{ "f.63", 63 },
|
||
{ "f.7", 7 },
|
||
{ "f.8", 8 },
|
||
{ "f.9", 9 },
|
||
|
||
{ "f0", 0 },
|
||
{ "f1", 1 },
|
||
{ "f10", 10 },
|
||
{ "f11", 11 },
|
||
{ "f12", 12 },
|
||
{ "f13", 13 },
|
||
{ "f14", 14 },
|
||
{ "f15", 15 },
|
||
{ "f16", 16 },
|
||
{ "f17", 17 },
|
||
{ "f18", 18 },
|
||
{ "f19", 19 },
|
||
{ "f2", 2 },
|
||
{ "f20", 20 },
|
||
{ "f21", 21 },
|
||
{ "f22", 22 },
|
||
{ "f23", 23 },
|
||
{ "f24", 24 },
|
||
{ "f25", 25 },
|
||
{ "f26", 26 },
|
||
{ "f27", 27 },
|
||
{ "f28", 28 },
|
||
{ "f29", 29 },
|
||
{ "f3", 3 },
|
||
{ "f30", 30 },
|
||
{ "f31", 31 },
|
||
|
||
{ "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
|
||
{ "f33", 33 },
|
||
{ "f34", 34 },
|
||
{ "f35", 35 },
|
||
{ "f36", 36 },
|
||
{ "f37", 37 },
|
||
{ "f38", 38 },
|
||
{ "f39", 39 },
|
||
{ "f4", 4 },
|
||
{ "f40", 40 },
|
||
{ "f41", 41 },
|
||
{ "f42", 42 },
|
||
{ "f43", 43 },
|
||
{ "f44", 44 },
|
||
{ "f45", 45 },
|
||
{ "f46", 46 },
|
||
{ "f47", 47 },
|
||
{ "f48", 48 },
|
||
{ "f49", 49 },
|
||
{ "f5", 5 },
|
||
{ "f50", 50 },
|
||
{ "f51", 51 },
|
||
{ "f52", 52 },
|
||
{ "f53", 53 },
|
||
{ "f54", 54 },
|
||
{ "f55", 55 },
|
||
{ "f56", 56 },
|
||
{ "f57", 57 },
|
||
{ "f58", 58 },
|
||
{ "f59", 59 },
|
||
{ "f6", 6 },
|
||
{ "f60", 60 },
|
||
{ "f61", 61 },
|
||
{ "f62", 62 },
|
||
{ "f63", 63 },
|
||
{ "f7", 7 },
|
||
{ "f8", 8 },
|
||
{ "f9", 9 },
|
||
|
||
{ "fpscr", 0 },
|
||
|
||
/* Quantization registers used with pair single instructions. */
|
||
{ "gqr.0", 0 },
|
||
{ "gqr.1", 1 },
|
||
{ "gqr.2", 2 },
|
||
{ "gqr.3", 3 },
|
||
{ "gqr.4", 4 },
|
||
{ "gqr.5", 5 },
|
||
{ "gqr.6", 6 },
|
||
{ "gqr.7", 7 },
|
||
{ "gqr0", 0 },
|
||
{ "gqr1", 1 },
|
||
{ "gqr2", 2 },
|
||
{ "gqr3", 3 },
|
||
{ "gqr4", 4 },
|
||
{ "gqr5", 5 },
|
||
{ "gqr6", 6 },
|
||
{ "gqr7", 7 },
|
||
|
||
{ "lr", 8 }, /* Link Register */
|
||
|
||
{ "pmr", 0 },
|
||
|
||
{ "r.0", 0 }, /* General Purpose Registers */
|
||
{ "r.1", 1 },
|
||
{ "r.10", 10 },
|
||
{ "r.11", 11 },
|
||
{ "r.12", 12 },
|
||
{ "r.13", 13 },
|
||
{ "r.14", 14 },
|
||
{ "r.15", 15 },
|
||
{ "r.16", 16 },
|
||
{ "r.17", 17 },
|
||
{ "r.18", 18 },
|
||
{ "r.19", 19 },
|
||
{ "r.2", 2 },
|
||
{ "r.20", 20 },
|
||
{ "r.21", 21 },
|
||
{ "r.22", 22 },
|
||
{ "r.23", 23 },
|
||
{ "r.24", 24 },
|
||
{ "r.25", 25 },
|
||
{ "r.26", 26 },
|
||
{ "r.27", 27 },
|
||
{ "r.28", 28 },
|
||
{ "r.29", 29 },
|
||
{ "r.3", 3 },
|
||
{ "r.30", 30 },
|
||
{ "r.31", 31 },
|
||
{ "r.4", 4 },
|
||
{ "r.5", 5 },
|
||
{ "r.6", 6 },
|
||
{ "r.7", 7 },
|
||
{ "r.8", 8 },
|
||
{ "r.9", 9 },
|
||
|
||
{ "r.sp", 1 }, /* Stack Pointer */
|
||
|
||
{ "r.toc", 2 }, /* Pointer to the table of contents */
|
||
|
||
{ "r0", 0 }, /* More general purpose registers */
|
||
{ "r1", 1 },
|
||
{ "r10", 10 },
|
||
{ "r11", 11 },
|
||
{ "r12", 12 },
|
||
{ "r13", 13 },
|
||
{ "r14", 14 },
|
||
{ "r15", 15 },
|
||
{ "r16", 16 },
|
||
{ "r17", 17 },
|
||
{ "r18", 18 },
|
||
{ "r19", 19 },
|
||
{ "r2", 2 },
|
||
{ "r20", 20 },
|
||
{ "r21", 21 },
|
||
{ "r22", 22 },
|
||
{ "r23", 23 },
|
||
{ "r24", 24 },
|
||
{ "r25", 25 },
|
||
{ "r26", 26 },
|
||
{ "r27", 27 },
|
||
{ "r28", 28 },
|
||
{ "r29", 29 },
|
||
{ "r3", 3 },
|
||
{ "r30", 30 },
|
||
{ "r31", 31 },
|
||
{ "r4", 4 },
|
||
{ "r5", 5 },
|
||
{ "r6", 6 },
|
||
{ "r7", 7 },
|
||
{ "r8", 8 },
|
||
{ "r9", 9 },
|
||
|
||
{ "rtoc", 2 }, /* Table of contents */
|
||
|
||
{ "sdr1", 25 }, /* Storage Description Register 1 */
|
||
|
||
{ "sp", 1 },
|
||
|
||
{ "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
|
||
{ "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
|
||
|
||
{ "v.0", 0 }, /* Vector (Altivec/VMX) registers */
|
||
{ "v.1", 1 },
|
||
{ "v.10", 10 },
|
||
{ "v.11", 11 },
|
||
{ "v.12", 12 },
|
||
{ "v.13", 13 },
|
||
{ "v.14", 14 },
|
||
{ "v.15", 15 },
|
||
{ "v.16", 16 },
|
||
{ "v.17", 17 },
|
||
{ "v.18", 18 },
|
||
{ "v.19", 19 },
|
||
{ "v.2", 2 },
|
||
{ "v.20", 20 },
|
||
{ "v.21", 21 },
|
||
{ "v.22", 22 },
|
||
{ "v.23", 23 },
|
||
{ "v.24", 24 },
|
||
{ "v.25", 25 },
|
||
{ "v.26", 26 },
|
||
{ "v.27", 27 },
|
||
{ "v.28", 28 },
|
||
{ "v.29", 29 },
|
||
{ "v.3", 3 },
|
||
{ "v.30", 30 },
|
||
{ "v.31", 31 },
|
||
{ "v.4", 4 },
|
||
{ "v.5", 5 },
|
||
{ "v.6", 6 },
|
||
{ "v.7", 7 },
|
||
{ "v.8", 8 },
|
||
{ "v.9", 9 },
|
||
|
||
{ "v0", 0 },
|
||
{ "v1", 1 },
|
||
{ "v10", 10 },
|
||
{ "v11", 11 },
|
||
{ "v12", 12 },
|
||
{ "v13", 13 },
|
||
{ "v14", 14 },
|
||
{ "v15", 15 },
|
||
{ "v16", 16 },
|
||
{ "v17", 17 },
|
||
{ "v18", 18 },
|
||
{ "v19", 19 },
|
||
{ "v2", 2 },
|
||
{ "v20", 20 },
|
||
{ "v21", 21 },
|
||
{ "v22", 22 },
|
||
{ "v23", 23 },
|
||
{ "v24", 24 },
|
||
{ "v25", 25 },
|
||
{ "v26", 26 },
|
||
{ "v27", 27 },
|
||
{ "v28", 28 },
|
||
{ "v29", 29 },
|
||
{ "v3", 3 },
|
||
{ "v30", 30 },
|
||
{ "v31", 31 },
|
||
{ "v4", 4 },
|
||
{ "v5", 5 },
|
||
{ "v6", 6 },
|
||
{ "v7", 7 },
|
||
{ "v8", 8 },
|
||
{ "v9", 9 },
|
||
|
||
{ "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */
|
||
{ "vs.1", 1 },
|
||
{ "vs.10", 10 },
|
||
{ "vs.11", 11 },
|
||
{ "vs.12", 12 },
|
||
{ "vs.13", 13 },
|
||
{ "vs.14", 14 },
|
||
{ "vs.15", 15 },
|
||
{ "vs.16", 16 },
|
||
{ "vs.17", 17 },
|
||
{ "vs.18", 18 },
|
||
{ "vs.19", 19 },
|
||
{ "vs.2", 2 },
|
||
{ "vs.20", 20 },
|
||
{ "vs.21", 21 },
|
||
{ "vs.22", 22 },
|
||
{ "vs.23", 23 },
|
||
{ "vs.24", 24 },
|
||
{ "vs.25", 25 },
|
||
{ "vs.26", 26 },
|
||
{ "vs.27", 27 },
|
||
{ "vs.28", 28 },
|
||
{ "vs.29", 29 },
|
||
{ "vs.3", 3 },
|
||
{ "vs.30", 30 },
|
||
{ "vs.31", 31 },
|
||
{ "vs.32", 32 },
|
||
{ "vs.33", 33 },
|
||
{ "vs.34", 34 },
|
||
{ "vs.35", 35 },
|
||
{ "vs.36", 36 },
|
||
{ "vs.37", 37 },
|
||
{ "vs.38", 38 },
|
||
{ "vs.39", 39 },
|
||
{ "vs.4", 4 },
|
||
{ "vs.40", 40 },
|
||
{ "vs.41", 41 },
|
||
{ "vs.42", 42 },
|
||
{ "vs.43", 43 },
|
||
{ "vs.44", 44 },
|
||
{ "vs.45", 45 },
|
||
{ "vs.46", 46 },
|
||
{ "vs.47", 47 },
|
||
{ "vs.48", 48 },
|
||
{ "vs.49", 49 },
|
||
{ "vs.5", 5 },
|
||
{ "vs.50", 50 },
|
||
{ "vs.51", 51 },
|
||
{ "vs.52", 52 },
|
||
{ "vs.53", 53 },
|
||
{ "vs.54", 54 },
|
||
{ "vs.55", 55 },
|
||
{ "vs.56", 56 },
|
||
{ "vs.57", 57 },
|
||
{ "vs.58", 58 },
|
||
{ "vs.59", 59 },
|
||
{ "vs.6", 6 },
|
||
{ "vs.60", 60 },
|
||
{ "vs.61", 61 },
|
||
{ "vs.62", 62 },
|
||
{ "vs.63", 63 },
|
||
{ "vs.7", 7 },
|
||
{ "vs.8", 8 },
|
||
{ "vs.9", 9 },
|
||
|
||
{ "vs0", 0 },
|
||
{ "vs1", 1 },
|
||
{ "vs10", 10 },
|
||
{ "vs11", 11 },
|
||
{ "vs12", 12 },
|
||
{ "vs13", 13 },
|
||
{ "vs14", 14 },
|
||
{ "vs15", 15 },
|
||
{ "vs16", 16 },
|
||
{ "vs17", 17 },
|
||
{ "vs18", 18 },
|
||
{ "vs19", 19 },
|
||
{ "vs2", 2 },
|
||
{ "vs20", 20 },
|
||
{ "vs21", 21 },
|
||
{ "vs22", 22 },
|
||
{ "vs23", 23 },
|
||
{ "vs24", 24 },
|
||
{ "vs25", 25 },
|
||
{ "vs26", 26 },
|
||
{ "vs27", 27 },
|
||
{ "vs28", 28 },
|
||
{ "vs29", 29 },
|
||
{ "vs3", 3 },
|
||
{ "vs30", 30 },
|
||
{ "vs31", 31 },
|
||
{ "vs32", 32 },
|
||
{ "vs33", 33 },
|
||
{ "vs34", 34 },
|
||
{ "vs35", 35 },
|
||
{ "vs36", 36 },
|
||
{ "vs37", 37 },
|
||
{ "vs38", 38 },
|
||
{ "vs39", 39 },
|
||
{ "vs4", 4 },
|
||
{ "vs40", 40 },
|
||
{ "vs41", 41 },
|
||
{ "vs42", 42 },
|
||
{ "vs43", 43 },
|
||
{ "vs44", 44 },
|
||
{ "vs45", 45 },
|
||
{ "vs46", 46 },
|
||
{ "vs47", 47 },
|
||
{ "vs48", 48 },
|
||
{ "vs49", 49 },
|
||
{ "vs5", 5 },
|
||
{ "vs50", 50 },
|
||
{ "vs51", 51 },
|
||
{ "vs52", 52 },
|
||
{ "vs53", 53 },
|
||
{ "vs54", 54 },
|
||
{ "vs55", 55 },
|
||
{ "vs56", 56 },
|
||
{ "vs57", 57 },
|
||
{ "vs58", 58 },
|
||
{ "vs59", 59 },
|
||
{ "vs6", 6 },
|
||
{ "vs60", 60 },
|
||
{ "vs61", 61 },
|
||
{ "vs62", 62 },
|
||
{ "vs63", 63 },
|
||
{ "vs7", 7 },
|
||
{ "vs8", 8 },
|
||
{ "vs9", 9 },
|
||
|
||
{ "xer", 1 },
|
||
|
||
};
|
||
|
||
#define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
|
||
|
||
/* Given NAME, find the register number associated with that name, return
|
||
the integer value associated with the given name or -1 on failure. */
|
||
|
||
static int
|
||
reg_name_search (const struct pd_reg *regs, int regcount, const char *name)
|
||
{
|
||
int middle, low, high;
|
||
int cmp;
|
||
|
||
low = 0;
|
||
high = regcount - 1;
|
||
|
||
do
|
||
{
|
||
middle = (low + high) / 2;
|
||
cmp = strcasecmp (name, regs[middle].name);
|
||
if (cmp < 0)
|
||
high = middle - 1;
|
||
else if (cmp > 0)
|
||
low = middle + 1;
|
||
else
|
||
return regs[middle].value;
|
||
}
|
||
while (low <= high);
|
||
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
* Summary of register_name.
|
||
*
|
||
* in: Input_line_pointer points to 1st char of operand.
|
||
*
|
||
* out: A expressionS.
|
||
* The operand may have been a register: in this case, X_op == O_register,
|
||
* X_add_number is set to the register number, and truth is returned.
|
||
* Input_line_pointer->(next non-blank) char after operand, or is in its
|
||
* original state.
|
||
*/
|
||
|
||
static bfd_boolean
|
||
register_name (expressionS *expressionP)
|
||
{
|
||
int reg_number;
|
||
char *name;
|
||
char *start;
|
||
char c;
|
||
|
||
/* Find the spelling of the operand. */
|
||
start = name = input_line_pointer;
|
||
if (name[0] == '%' && ISALPHA (name[1]))
|
||
name = ++input_line_pointer;
|
||
|
||
else if (!reg_names_p || !ISALPHA (name[0]))
|
||
return FALSE;
|
||
|
||
c = get_symbol_end ();
|
||
reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
|
||
|
||
/* Put back the delimiting char. */
|
||
*input_line_pointer = c;
|
||
|
||
/* Look to see if it's in the register table. */
|
||
if (reg_number >= 0)
|
||
{
|
||
expressionP->X_op = O_register;
|
||
expressionP->X_add_number = reg_number;
|
||
|
||
/* Make the rest nice. */
|
||
expressionP->X_add_symbol = NULL;
|
||
expressionP->X_op_symbol = NULL;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Reset the line as if we had not done anything. */
|
||
input_line_pointer = start;
|
||
return FALSE;
|
||
}
|
||
|
||
/* This function is called for each symbol seen in an expression. It
|
||
handles the special parsing which PowerPC assemblers are supposed
|
||
to use for condition codes. */
|
||
|
||
/* Whether to do the special parsing. */
|
||
static bfd_boolean cr_operand;
|
||
|
||
/* Names to recognize in a condition code. This table is sorted. */
|
||
static const struct pd_reg cr_names[] =
|
||
{
|
||
{ "cr0", 0 },
|
||
{ "cr1", 1 },
|
||
{ "cr2", 2 },
|
||
{ "cr3", 3 },
|
||
{ "cr4", 4 },
|
||
{ "cr5", 5 },
|
||
{ "cr6", 6 },
|
||
{ "cr7", 7 },
|
||
{ "eq", 2 },
|
||
{ "gt", 1 },
|
||
{ "lt", 0 },
|
||
{ "so", 3 },
|
||
{ "un", 3 }
|
||
};
|
||
|
||
/* Parsing function. This returns non-zero if it recognized an
|
||
expression. */
|
||
|
||
int
|
||
ppc_parse_name (const char *name, expressionS *exp)
|
||
{
|
||
int val;
|
||
|
||
if (! cr_operand)
|
||
return 0;
|
||
|
||
if (*name == '%')
|
||
++name;
|
||
val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
|
||
name);
|
||
if (val < 0)
|
||
return 0;
|
||
|
||
exp->X_op = O_constant;
|
||
exp->X_add_number = val;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Local variables. */
|
||
|
||
/* Whether to target xcoff64/elf64. */
|
||
static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
|
||
|
||
/* Opcode hash table. */
|
||
static struct hash_control *ppc_hash;
|
||
|
||
/* Macro hash table. */
|
||
static struct hash_control *ppc_macro_hash;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* What type of shared library support to use. */
|
||
static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
|
||
|
||
/* Flags to set in the elf header. */
|
||
static flagword ppc_flags = 0;
|
||
|
||
/* Whether this is Solaris or not. */
|
||
#ifdef TARGET_SOLARIS_COMMENT
|
||
#define SOLARIS_P TRUE
|
||
#else
|
||
#define SOLARIS_P FALSE
|
||
#endif
|
||
|
||
static bfd_boolean msolaris = SOLARIS_P;
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* The RS/6000 assembler uses the .csect pseudo-op to generate code
|
||
using a bunch of different sections. These assembler sections,
|
||
however, are all encompassed within the .text or .data sections of
|
||
the final output file. We handle this by using different
|
||
subsegments within these main segments. */
|
||
|
||
/* Next subsegment to allocate within the .text segment. */
|
||
static subsegT ppc_text_subsegment = 2;
|
||
|
||
/* Linked list of csects in the text section. */
|
||
static symbolS *ppc_text_csects;
|
||
|
||
/* Next subsegment to allocate within the .data segment. */
|
||
static subsegT ppc_data_subsegment = 2;
|
||
|
||
/* Linked list of csects in the data section. */
|
||
static symbolS *ppc_data_csects;
|
||
|
||
/* The current csect. */
|
||
static symbolS *ppc_current_csect;
|
||
|
||
/* The RS/6000 assembler uses a TOC which holds addresses of functions
|
||
and variables. Symbols are put in the TOC with the .tc pseudo-op.
|
||
A special relocation is used when accessing TOC entries. We handle
|
||
the TOC as a subsegment within the .data segment. We set it up if
|
||
we see a .toc pseudo-op, and save the csect symbol here. */
|
||
static symbolS *ppc_toc_csect;
|
||
|
||
/* The first frag in the TOC subsegment. */
|
||
static fragS *ppc_toc_frag;
|
||
|
||
/* The first frag in the first subsegment after the TOC in the .data
|
||
segment. NULL if there are no subsegments after the TOC. */
|
||
static fragS *ppc_after_toc_frag;
|
||
|
||
/* The current static block. */
|
||
static symbolS *ppc_current_block;
|
||
|
||
/* The COFF debugging section; set by md_begin. This is not the
|
||
.debug section, but is instead the secret BFD section which will
|
||
cause BFD to set the section number of a symbol to N_DEBUG. */
|
||
static asection *ppc_coff_debug_section;
|
||
|
||
/* Structure to set the length field of the dwarf sections. */
|
||
struct dw_subsection {
|
||
/* Subsections are simply linked. */
|
||
struct dw_subsection *link;
|
||
|
||
/* The subsection number. */
|
||
subsegT subseg;
|
||
|
||
/* Expression to compute the length of the section. */
|
||
expressionS end_exp;
|
||
};
|
||
|
||
static struct dw_section {
|
||
/* Corresponding section. */
|
||
segT sect;
|
||
|
||
/* Simply linked list of subsections with a label. */
|
||
struct dw_subsection *list_subseg;
|
||
|
||
/* The anonymous subsection. */
|
||
struct dw_subsection *anon_subseg;
|
||
} dw_sections[XCOFF_DWSECT_NBR_NAMES];
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
#ifdef TE_PE
|
||
|
||
/* Various sections that we need for PE coff support. */
|
||
static segT ydata_section;
|
||
static segT pdata_section;
|
||
static segT reldata_section;
|
||
static segT rdata_section;
|
||
static segT tocdata_section;
|
||
|
||
/* The current section and the previous section. See ppc_previous. */
|
||
static segT ppc_previous_section;
|
||
static segT ppc_current_section;
|
||
|
||
#endif /* TE_PE */
|
||
|
||
#ifdef OBJ_ELF
|
||
symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
|
||
#define PPC_APUINFO_ISEL 0x40
|
||
#define PPC_APUINFO_PMR 0x41
|
||
#define PPC_APUINFO_RFMCI 0x42
|
||
#define PPC_APUINFO_CACHELCK 0x43
|
||
#define PPC_APUINFO_SPE 0x100
|
||
#define PPC_APUINFO_EFS 0x101
|
||
#define PPC_APUINFO_BRLOCK 0x102
|
||
#define PPC_APUINFO_VLE 0x104
|
||
|
||
/*
|
||
* We keep a list of APUinfo
|
||
*/
|
||
unsigned long *ppc_apuinfo_list;
|
||
unsigned int ppc_apuinfo_num;
|
||
unsigned int ppc_apuinfo_num_alloc;
|
||
#endif /* OBJ_ELF */
|
||
|
||
#ifdef OBJ_ELF
|
||
const char *const md_shortopts = "b:l:usm:K:VQ:";
|
||
#else
|
||
const char *const md_shortopts = "um:";
|
||
#endif
|
||
#define OPTION_NOPS (OPTION_MD_BASE + 0)
|
||
const struct option md_longopts[] = {
|
||
{"nops", required_argument, NULL, OPTION_NOPS},
|
||
{"ppc476-workaround", no_argument, &warn_476, 1},
|
||
{"no-ppc476-workaround", no_argument, &warn_476, 0},
|
||
{NULL, no_argument, NULL, 0}
|
||
};
|
||
const size_t md_longopts_size = sizeof (md_longopts);
|
||
|
||
int
|
||
md_parse_option (int c, char *arg)
|
||
{
|
||
ppc_cpu_t new_cpu;
|
||
|
||
switch (c)
|
||
{
|
||
case 'u':
|
||
/* -u means that any undefined symbols should be treated as
|
||
external, which is the default for gas anyhow. */
|
||
break;
|
||
|
||
#ifdef OBJ_ELF
|
||
case 'l':
|
||
/* Solaris as takes -le (presumably for little endian). For completeness
|
||
sake, recognize -be also. */
|
||
if (strcmp (arg, "e") == 0)
|
||
{
|
||
target_big_endian = 0;
|
||
set_target_endian = 1;
|
||
if (ppc_cpu & PPC_OPCODE_VLE)
|
||
as_bad (_("the use of -mvle requires big endian."));
|
||
}
|
||
else
|
||
return 0;
|
||
|
||
break;
|
||
|
||
case 'b':
|
||
if (strcmp (arg, "e") == 0)
|
||
{
|
||
target_big_endian = 1;
|
||
set_target_endian = 1;
|
||
}
|
||
else
|
||
return 0;
|
||
|
||
break;
|
||
|
||
case 'K':
|
||
/* Recognize -K PIC. */
|
||
if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
|
||
{
|
||
shlib = SHLIB_PIC;
|
||
ppc_flags |= EF_PPC_RELOCATABLE_LIB;
|
||
}
|
||
else
|
||
return 0;
|
||
|
||
break;
|
||
#endif
|
||
|
||
/* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
|
||
case 'a':
|
||
if (strcmp (arg, "64") == 0)
|
||
{
|
||
#ifdef BFD64
|
||
ppc_obj64 = 1;
|
||
if (ppc_cpu & PPC_OPCODE_VLE)
|
||
as_bad (_("the use of -mvle requires -a32."));
|
||
#else
|
||
as_fatal (_("%s unsupported"), "-a64");
|
||
#endif
|
||
}
|
||
else if (strcmp (arg, "32") == 0)
|
||
ppc_obj64 = 0;
|
||
else
|
||
return 0;
|
||
break;
|
||
|
||
case 'm':
|
||
new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, arg);
|
||
if (new_cpu != 0)
|
||
{
|
||
ppc_cpu = new_cpu;
|
||
if (strcmp (arg, "vle") == 0)
|
||
{
|
||
if (set_target_endian && target_big_endian == 0)
|
||
as_bad (_("the use of -mvle requires big endian."));
|
||
if (ppc_obj64)
|
||
as_bad (_("the use of -mvle requires -a32."));
|
||
}
|
||
}
|
||
|
||
else if (strcmp (arg, "regnames") == 0)
|
||
reg_names_p = TRUE;
|
||
|
||
else if (strcmp (arg, "no-regnames") == 0)
|
||
reg_names_p = FALSE;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* -mrelocatable/-mrelocatable-lib -- warn about initializations
|
||
that require relocation. */
|
||
else if (strcmp (arg, "relocatable") == 0)
|
||
{
|
||
shlib = SHLIB_MRELOCATABLE;
|
||
ppc_flags |= EF_PPC_RELOCATABLE;
|
||
}
|
||
|
||
else if (strcmp (arg, "relocatable-lib") == 0)
|
||
{
|
||
shlib = SHLIB_MRELOCATABLE;
|
||
ppc_flags |= EF_PPC_RELOCATABLE_LIB;
|
||
}
|
||
|
||
/* -memb, set embedded bit. */
|
||
else if (strcmp (arg, "emb") == 0)
|
||
ppc_flags |= EF_PPC_EMB;
|
||
|
||
/* -mlittle/-mbig set the endianness. */
|
||
else if (strcmp (arg, "little") == 0
|
||
|| strcmp (arg, "little-endian") == 0)
|
||
{
|
||
target_big_endian = 0;
|
||
set_target_endian = 1;
|
||
if (ppc_cpu & PPC_OPCODE_VLE)
|
||
as_bad (_("the use of -mvle requires big endian."));
|
||
}
|
||
|
||
else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
|
||
{
|
||
target_big_endian = 1;
|
||
set_target_endian = 1;
|
||
}
|
||
|
||
else if (strcmp (arg, "solaris") == 0)
|
||
{
|
||
msolaris = TRUE;
|
||
ppc_comment_chars = ppc_solaris_comment_chars;
|
||
}
|
||
|
||
else if (strcmp (arg, "no-solaris") == 0)
|
||
{
|
||
msolaris = FALSE;
|
||
ppc_comment_chars = ppc_eabi_comment_chars;
|
||
}
|
||
#endif
|
||
else
|
||
{
|
||
as_bad (_("invalid switch -m%s"), arg);
|
||
return 0;
|
||
}
|
||
break;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* -V: SVR4 argument to print version ID. */
|
||
case 'V':
|
||
print_version_id ();
|
||
break;
|
||
|
||
/* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
|
||
should be emitted or not. FIXME: Not implemented. */
|
||
case 'Q':
|
||
break;
|
||
|
||
/* Solaris takes -s to specify that .stabs go in a .stabs section,
|
||
rather than .stabs.excl, which is ignored by the linker.
|
||
FIXME: Not implemented. */
|
||
case 's':
|
||
if (arg)
|
||
return 0;
|
||
|
||
break;
|
||
#endif
|
||
|
||
case OPTION_NOPS:
|
||
{
|
||
char *end;
|
||
nop_limit = strtoul (optarg, &end, 0);
|
||
if (*end)
|
||
as_bad (_("--nops needs a numeric argument"));
|
||
}
|
||
break;
|
||
|
||
case 0:
|
||
break;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
md_show_usage (FILE *stream)
|
||
{
|
||
fprintf (stream, _("\
|
||
PowerPC options:\n\
|
||
-a32 generate ELF32/XCOFF32\n\
|
||
-a64 generate ELF64/XCOFF64\n\
|
||
-u ignored\n\
|
||
-mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
|
||
-mpwr generate code for POWER (RIOS1)\n\
|
||
-m601 generate code for PowerPC 601\n\
|
||
-mppc, -mppc32, -m603, -m604\n\
|
||
generate code for PowerPC 603/604\n\
|
||
-m403 generate code for PowerPC 403\n\
|
||
-m405 generate code for PowerPC 405\n\
|
||
-m440 generate code for PowerPC 440\n\
|
||
-m464 generate code for PowerPC 464\n\
|
||
-m476 generate code for PowerPC 476\n\
|
||
-m7400, -m7410, -m7450, -m7455\n\
|
||
generate code for PowerPC 7400/7410/7450/7455\n\
|
||
-m750cl generate code for PowerPC 750cl\n\
|
||
-m821, -m850, -m860 generate code for PowerPC 821/850/860\n"));
|
||
fprintf (stream, _("\
|
||
-mppc64, -m620 generate code for PowerPC 620/625/630\n\
|
||
-mppc64bridge generate code for PowerPC 64, including bridge insns\n\
|
||
-mbooke generate code for 32-bit PowerPC BookE\n\
|
||
-ma2 generate code for A2 architecture\n\
|
||
-mpower4, -mpwr4 generate code for Power4 architecture\n\
|
||
-mpower5, -mpwr5, -mpwr5x\n\
|
||
generate code for Power5 architecture\n\
|
||
-mpower6, -mpwr6 generate code for Power6 architecture\n\
|
||
-mpower7, -mpwr7 generate code for Power7 architecture\n\
|
||
-mpower8, -mpwr8 generate code for Power8 architecture\n\
|
||
-mcell generate code for Cell Broadband Engine architecture\n\
|
||
-mcom generate code Power/PowerPC common instructions\n\
|
||
-many generate code for any architecture (PWR/PWRX/PPC)\n"));
|
||
fprintf (stream, _("\
|
||
-maltivec generate code for AltiVec\n\
|
||
-mvsx generate code for Vector-Scalar (VSX) instructions\n\
|
||
-mhtm generate code for Hardware Transactional Memory\n\
|
||
-me300 generate code for PowerPC e300 family\n\
|
||
-me500, -me500x2 generate code for Motorola e500 core complex\n\
|
||
-me500mc, generate code for Freescale e500mc core complex\n\
|
||
-me500mc64, generate code for Freescale e500mc64 core complex\n\
|
||
-me5500, generate code for Freescale e5500 core complex\n\
|
||
-me6500, generate code for Freescale e6500 core complex\n\
|
||
-mspe generate code for Motorola SPE instructions\n\
|
||
-mvle generate code for Freescale VLE instructions\n\
|
||
-mtitan generate code for AppliedMicro Titan core complex\n\
|
||
-mregnames Allow symbolic names for registers\n\
|
||
-mno-regnames Do not allow symbolic names for registers\n"));
|
||
#ifdef OBJ_ELF
|
||
fprintf (stream, _("\
|
||
-mrelocatable support for GCC's -mrelocatble option\n\
|
||
-mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
|
||
-memb set PPC_EMB bit in ELF flags\n\
|
||
-mlittle, -mlittle-endian, -le\n\
|
||
generate code for a little endian machine\n\
|
||
-mbig, -mbig-endian, -be\n\
|
||
generate code for a big endian machine\n\
|
||
-msolaris generate code for Solaris\n\
|
||
-mno-solaris do not generate code for Solaris\n\
|
||
-K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\
|
||
-V print assembler version number\n\
|
||
-Qy, -Qn ignored\n"));
|
||
#endif
|
||
fprintf (stream, _("\
|
||
-nops=count when aligning, more than COUNT nops uses a branch\n\
|
||
-ppc476-workaround warn if emitting data to code sections\n"));
|
||
}
|
||
|
||
/* Set ppc_cpu if it is not already set. */
|
||
|
||
static void
|
||
ppc_set_cpu (void)
|
||
{
|
||
const char *default_os = TARGET_OS;
|
||
const char *default_cpu = TARGET_CPU;
|
||
|
||
if ((ppc_cpu & ~(ppc_cpu_t) PPC_OPCODE_ANY) == 0)
|
||
{
|
||
if (ppc_obj64)
|
||
ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_64;
|
||
else if (strncmp (default_os, "aix", 3) == 0
|
||
&& default_os[3] >= '4' && default_os[3] <= '9')
|
||
ppc_cpu |= PPC_OPCODE_COMMON;
|
||
else if (strncmp (default_os, "aix3", 4) == 0)
|
||
ppc_cpu |= PPC_OPCODE_POWER;
|
||
else if (strcmp (default_cpu, "rs6000") == 0)
|
||
ppc_cpu |= PPC_OPCODE_POWER;
|
||
else if (strncmp (default_cpu, "powerpc", 7) == 0)
|
||
ppc_cpu |= PPC_OPCODE_PPC;
|
||
else
|
||
as_fatal (_("unknown default cpu = %s, os = %s"),
|
||
default_cpu, default_os);
|
||
}
|
||
}
|
||
|
||
/* Figure out the BFD architecture to use. This function and ppc_mach
|
||
are called well before md_begin, when the output file is opened. */
|
||
|
||
enum bfd_architecture
|
||
ppc_arch (void)
|
||
{
|
||
const char *default_cpu = TARGET_CPU;
|
||
ppc_set_cpu ();
|
||
|
||
if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
|
||
return bfd_arch_powerpc;
|
||
if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
|
||
return bfd_arch_powerpc;
|
||
if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
|
||
return bfd_arch_rs6000;
|
||
if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
|
||
{
|
||
if (strcmp (default_cpu, "rs6000") == 0)
|
||
return bfd_arch_rs6000;
|
||
else if (strncmp (default_cpu, "powerpc", 7) == 0)
|
||
return bfd_arch_powerpc;
|
||
}
|
||
|
||
as_fatal (_("neither Power nor PowerPC opcodes were selected."));
|
||
return bfd_arch_unknown;
|
||
}
|
||
|
||
unsigned long
|
||
ppc_mach (void)
|
||
{
|
||
if (ppc_obj64)
|
||
return bfd_mach_ppc64;
|
||
else if (ppc_arch () == bfd_arch_rs6000)
|
||
return bfd_mach_rs6k;
|
||
else if (ppc_cpu & PPC_OPCODE_TITAN)
|
||
return bfd_mach_ppc_titan;
|
||
else if (ppc_cpu & PPC_OPCODE_VLE)
|
||
return bfd_mach_ppc_vle;
|
||
else
|
||
return bfd_mach_ppc;
|
||
}
|
||
|
||
extern char*
|
||
ppc_target_format (void)
|
||
{
|
||
#ifdef OBJ_COFF
|
||
#ifdef TE_PE
|
||
return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
|
||
#elif TE_POWERMAC
|
||
return "xcoff-powermac";
|
||
#else
|
||
# ifdef TE_AIX5
|
||
return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
|
||
# else
|
||
return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
|
||
# endif
|
||
#endif
|
||
#endif
|
||
#ifdef OBJ_ELF
|
||
# ifdef TE_FreeBSD
|
||
return (ppc_obj64 ? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd");
|
||
# elif defined (TE_VXWORKS)
|
||
return "elf32-powerpc-vxworks";
|
||
# else
|
||
return (target_big_endian
|
||
? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
|
||
: (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
|
||
# endif
|
||
#endif
|
||
}
|
||
|
||
/* Validate one entry in powerpc_opcodes[] or vle_opcodes[].
|
||
Return TRUE if there's a problem, otherwise FALSE. */
|
||
|
||
static bfd_boolean
|
||
insn_validate (const struct powerpc_opcode *op)
|
||
{
|
||
const unsigned char *o;
|
||
unsigned long omask = op->mask;
|
||
|
||
/* The mask had better not trim off opcode bits. */
|
||
if ((op->opcode & omask) != op->opcode)
|
||
{
|
||
as_bad (_("mask trims opcode bits for %s"), op->name);
|
||
return TRUE;
|
||
}
|
||
|
||
/* The operands must not overlap the opcode or each other. */
|
||
for (o = op->operands; *o; ++o)
|
||
{
|
||
if (*o >= num_powerpc_operands)
|
||
{
|
||
as_bad (_("operand index error for %s"), op->name);
|
||
return TRUE;
|
||
}
|
||
else
|
||
{
|
||
const struct powerpc_operand *operand = &powerpc_operands[*o];
|
||
if (operand->shift != PPC_OPSHIFT_INV)
|
||
{
|
||
unsigned long mask;
|
||
|
||
if (operand->shift >= 0)
|
||
mask = operand->bitm << operand->shift;
|
||
else
|
||
mask = operand->bitm >> -operand->shift;
|
||
if (omask & mask)
|
||
{
|
||
as_bad (_("operand %d overlap in %s"),
|
||
(int) (o - op->operands), op->name);
|
||
return TRUE;
|
||
}
|
||
omask |= mask;
|
||
}
|
||
}
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
/* Insert opcodes and macros into hash tables. Called at startup and
|
||
for .machine pseudo. */
|
||
|
||
static void
|
||
ppc_setup_opcodes (void)
|
||
{
|
||
const struct powerpc_opcode *op;
|
||
const struct powerpc_opcode *op_end;
|
||
const struct powerpc_macro *macro;
|
||
const struct powerpc_macro *macro_end;
|
||
bfd_boolean bad_insn = FALSE;
|
||
|
||
if (ppc_hash != NULL)
|
||
hash_die (ppc_hash);
|
||
if (ppc_macro_hash != NULL)
|
||
hash_die (ppc_macro_hash);
|
||
|
||
/* Insert the opcodes into a hash table. */
|
||
ppc_hash = hash_new ();
|
||
|
||
if (ENABLE_CHECKING)
|
||
{
|
||
unsigned int i;
|
||
|
||
/* An index into powerpc_operands is stored in struct fix
|
||
fx_pcrel_adjust which is 8 bits wide. */
|
||
gas_assert (num_powerpc_operands < 256);
|
||
|
||
/* Check operand masks. Code here and in the disassembler assumes
|
||
all the 1's in the mask are contiguous. */
|
||
for (i = 0; i < num_powerpc_operands; ++i)
|
||
{
|
||
unsigned long mask = powerpc_operands[i].bitm;
|
||
unsigned long right_bit;
|
||
unsigned int j;
|
||
|
||
right_bit = mask & -mask;
|
||
mask += right_bit;
|
||
right_bit = mask & -mask;
|
||
if (mask != right_bit)
|
||
{
|
||
as_bad (_("powerpc_operands[%d].bitm invalid"), i);
|
||
bad_insn = TRUE;
|
||
}
|
||
for (j = i + 1; j < num_powerpc_operands; ++j)
|
||
if (memcmp (&powerpc_operands[i], &powerpc_operands[j],
|
||
sizeof (powerpc_operands[0])) == 0)
|
||
{
|
||
as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
|
||
j, i);
|
||
bad_insn = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
op_end = powerpc_opcodes + powerpc_num_opcodes;
|
||
for (op = powerpc_opcodes; op < op_end; op++)
|
||
{
|
||
if (ENABLE_CHECKING)
|
||
{
|
||
if (op != powerpc_opcodes)
|
||
{
|
||
int old_opcode = PPC_OP (op[-1].opcode);
|
||
int new_opcode = PPC_OP (op[0].opcode);
|
||
|
||
#ifdef PRINT_OPCODE_TABLE
|
||
printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
|
||
op->name, (unsigned int) (op - powerpc_opcodes),
|
||
(unsigned int) new_opcode, (unsigned int) op->opcode,
|
||
(unsigned int) op->mask, (unsigned long long) op->flags);
|
||
#endif
|
||
|
||
/* The major opcodes had better be sorted. Code in the
|
||
disassembler assumes the insns are sorted according to
|
||
major opcode. */
|
||
if (new_opcode < old_opcode)
|
||
{
|
||
as_bad (_("major opcode is not sorted for %s"),
|
||
op->name);
|
||
bad_insn = TRUE;
|
||
}
|
||
}
|
||
bad_insn |= insn_validate (op);
|
||
}
|
||
|
||
if ((ppc_cpu & op->flags) != 0
|
||
&& !(ppc_cpu & op->deprecated))
|
||
{
|
||
const char *retval;
|
||
|
||
retval = hash_insert (ppc_hash, op->name, (void *) op);
|
||
if (retval != NULL)
|
||
{
|
||
as_bad (_("duplicate instruction %s"),
|
||
op->name);
|
||
bad_insn = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
|
||
for (op = powerpc_opcodes; op < op_end; op++)
|
||
hash_insert (ppc_hash, op->name, (void *) op);
|
||
|
||
op_end = vle_opcodes + vle_num_opcodes;
|
||
for (op = vle_opcodes; op < op_end; op++)
|
||
{
|
||
if (ENABLE_CHECKING)
|
||
{
|
||
if (op != vle_opcodes)
|
||
{
|
||
unsigned old_seg, new_seg;
|
||
|
||
old_seg = VLE_OP (op[-1].opcode, op[-1].mask);
|
||
old_seg = VLE_OP_TO_SEG (old_seg);
|
||
new_seg = VLE_OP (op[0].opcode, op[0].mask);
|
||
new_seg = VLE_OP_TO_SEG (new_seg);
|
||
|
||
#ifdef PRINT_OPCODE_TABLE
|
||
printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
|
||
op->name, (unsigned int) (op - powerpc_opcodes),
|
||
(unsigned int) new_seg, (unsigned int) op->opcode,
|
||
(unsigned int) op->mask, (unsigned long long) op->flags);
|
||
#endif
|
||
/* The major opcodes had better be sorted. Code in the
|
||
disassembler assumes the insns are sorted according to
|
||
major opcode. */
|
||
if (new_seg < old_seg)
|
||
{
|
||
as_bad (_("major opcode is not sorted for %s"),
|
||
op->name);
|
||
bad_insn = TRUE;
|
||
}
|
||
}
|
||
|
||
bad_insn |= insn_validate (op);
|
||
}
|
||
|
||
if ((ppc_cpu & op->flags) != 0
|
||
&& !(ppc_cpu & op->deprecated))
|
||
{
|
||
const char *retval;
|
||
|
||
retval = hash_insert (ppc_hash, op->name, (void *) op);
|
||
if (retval != NULL)
|
||
{
|
||
as_bad (_("duplicate instruction %s"),
|
||
op->name);
|
||
bad_insn = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
if ((ppc_cpu & PPC_OPCODE_VLE) != 0)
|
||
for (op = vle_opcodes; op < op_end; op++)
|
||
hash_insert (ppc_hash, op->name, (void *) op);
|
||
|
||
/* Insert the macros into a hash table. */
|
||
ppc_macro_hash = hash_new ();
|
||
|
||
macro_end = powerpc_macros + powerpc_num_macros;
|
||
for (macro = powerpc_macros; macro < macro_end; macro++)
|
||
{
|
||
if ((macro->flags & ppc_cpu) != 0 || (ppc_cpu & PPC_OPCODE_ANY) != 0)
|
||
{
|
||
const char *retval;
|
||
|
||
retval = hash_insert (ppc_macro_hash, macro->name, (void *) macro);
|
||
if (retval != (const char *) NULL)
|
||
{
|
||
as_bad (_("duplicate macro %s"), macro->name);
|
||
bad_insn = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (bad_insn)
|
||
abort ();
|
||
}
|
||
|
||
/* This function is called when the assembler starts up. It is called
|
||
after the options have been parsed and the output file has been
|
||
opened. */
|
||
|
||
void
|
||
md_begin (void)
|
||
{
|
||
ppc_set_cpu ();
|
||
|
||
ppc_cie_data_alignment = ppc_obj64 ? -8 : -4;
|
||
ppc_dwarf2_line_min_insn_length = (ppc_cpu & PPC_OPCODE_VLE) ? 2 : 4;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* Set the ELF flags if desired. */
|
||
if (ppc_flags && !msolaris)
|
||
bfd_set_private_flags (stdoutput, ppc_flags);
|
||
#endif
|
||
|
||
ppc_setup_opcodes ();
|
||
|
||
/* Tell the main code what the endianness is if it is not overridden
|
||
by the user. */
|
||
if (!set_target_endian)
|
||
{
|
||
set_target_endian = 1;
|
||
target_big_endian = PPC_BIG_ENDIAN;
|
||
}
|
||
|
||
#ifdef OBJ_XCOFF
|
||
ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
|
||
|
||
/* Create dummy symbols to serve as initial csects. This forces the
|
||
text csects to precede the data csects. These symbols will not
|
||
be output. */
|
||
ppc_text_csects = symbol_make ("dummy\001");
|
||
symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
|
||
ppc_data_csects = symbol_make ("dummy\001");
|
||
symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
|
||
#endif
|
||
|
||
#ifdef TE_PE
|
||
|
||
ppc_current_section = text_section;
|
||
ppc_previous_section = 0;
|
||
|
||
#endif
|
||
}
|
||
|
||
void
|
||
ppc_cleanup (void)
|
||
{
|
||
#ifdef OBJ_ELF
|
||
if (ppc_apuinfo_list == NULL)
|
||
return;
|
||
|
||
/* Ok, so write the section info out. We have this layout:
|
||
|
||
byte data what
|
||
---- ---- ----
|
||
0 8 length of "APUinfo\0"
|
||
4 (n*4) number of APU's (4 bytes each)
|
||
8 2 note type 2
|
||
12 "APUinfo\0" name
|
||
20 APU#1 first APU's info
|
||
24 APU#2 second APU's info
|
||
... ...
|
||
*/
|
||
{
|
||
char *p;
|
||
asection *seg = now_seg;
|
||
subsegT subseg = now_subseg;
|
||
asection *apuinfo_secp = (asection *) NULL;
|
||
unsigned int i;
|
||
|
||
/* Create the .PPC.EMB.apuinfo section. */
|
||
apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0);
|
||
bfd_set_section_flags (stdoutput,
|
||
apuinfo_secp,
|
||
SEC_HAS_CONTENTS | SEC_READONLY);
|
||
|
||
p = frag_more (4);
|
||
md_number_to_chars (p, (valueT) 8, 4);
|
||
|
||
p = frag_more (4);
|
||
md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4);
|
||
|
||
p = frag_more (4);
|
||
md_number_to_chars (p, (valueT) 2, 4);
|
||
|
||
p = frag_more (8);
|
||
strcpy (p, "APUinfo");
|
||
|
||
for (i = 0; i < ppc_apuinfo_num; i++)
|
||
{
|
||
p = frag_more (4);
|
||
md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
|
||
}
|
||
|
||
frag_align (2, 0, 0);
|
||
|
||
/* We probably can't restore the current segment, for there likely
|
||
isn't one yet... */
|
||
if (seg && subseg)
|
||
subseg_set (seg, subseg);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Insert an operand value into an instruction. */
|
||
|
||
static unsigned long
|
||
ppc_insert_operand (unsigned long insn,
|
||
const struct powerpc_operand *operand,
|
||
offsetT val,
|
||
ppc_cpu_t cpu,
|
||
char *file,
|
||
unsigned int line)
|
||
{
|
||
long min, max, right;
|
||
|
||
max = operand->bitm;
|
||
right = max & -max;
|
||
min = 0;
|
||
|
||
if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
|
||
{
|
||
/* Extend the allowed range for addis to [-65536, 65535].
|
||
Similarly for some VLE high part insns. For 64-bit it
|
||
would be good to disable this for signed fields since the
|
||
value is sign extended into the high 32 bits of the register.
|
||
If the value is, say, an address, then we might care about
|
||
the high bits. However, gcc as of 2014-06 uses unsigned
|
||
values when loading the high part of 64-bit constants using
|
||
lis.
|
||
Use the same extended range for cmpli, to allow at least
|
||
[-32768, 65535]. */
|
||
min = ~max & -right;
|
||
}
|
||
else if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
{
|
||
max = (max >> 1) & -right;
|
||
min = ~max & -right;
|
||
}
|
||
|
||
if ((operand->flags & PPC_OPERAND_PLUS1) != 0)
|
||
max++;
|
||
|
||
if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
|
||
{
|
||
long tmp = min;
|
||
min = -max;
|
||
max = -tmp;
|
||
}
|
||
|
||
if (min <= max)
|
||
{
|
||
/* Some people write constants with the sign extension done by
|
||
hand but only up to 32 bits. This shouldn't really be valid,
|
||
but, to permit this code to assemble on a 64-bit host, we
|
||
sign extend the 32-bit value to 64 bits if so doing makes the
|
||
value valid. */
|
||
if (val > max
|
||
&& (offsetT) (val - 0x80000000 - 0x80000000) >= min
|
||
&& (offsetT) (val - 0x80000000 - 0x80000000) <= max
|
||
&& ((val - 0x80000000 - 0x80000000) & (right - 1)) == 0)
|
||
val = val - 0x80000000 - 0x80000000;
|
||
|
||
/* Similarly, people write expressions like ~(1<<15), and expect
|
||
this to be OK for a 32-bit unsigned value. */
|
||
else if (val < min
|
||
&& (offsetT) (val + 0x80000000 + 0x80000000) >= min
|
||
&& (offsetT) (val + 0x80000000 + 0x80000000) <= max
|
||
&& ((val + 0x80000000 + 0x80000000) & (right - 1)) == 0)
|
||
val = val + 0x80000000 + 0x80000000;
|
||
|
||
else if (val < min
|
||
|| val > max
|
||
|| (val & (right - 1)) != 0)
|
||
as_bad_value_out_of_range (_("operand"), val, min, max, file, line);
|
||
}
|
||
|
||
if (operand->insert)
|
||
{
|
||
const char *errmsg;
|
||
|
||
errmsg = NULL;
|
||
insn = (*operand->insert) (insn, (long) val, cpu, &errmsg);
|
||
if (errmsg != (const char *) NULL)
|
||
as_bad_where (file, line, "%s", errmsg);
|
||
}
|
||
else if (operand->shift >= 0)
|
||
insn |= ((long) val & operand->bitm) << operand->shift;
|
||
else
|
||
insn |= ((long) val & operand->bitm) >> -operand->shift;
|
||
|
||
return insn;
|
||
}
|
||
|
||
|
||
#ifdef OBJ_ELF
|
||
/* Parse @got, etc. and return the desired relocation. */
|
||
static bfd_reloc_code_real_type
|
||
ppc_elf_suffix (char **str_p, expressionS *exp_p)
|
||
{
|
||
struct map_bfd {
|
||
char *string;
|
||
unsigned int length : 8;
|
||
unsigned int valid32 : 1;
|
||
unsigned int valid64 : 1;
|
||
unsigned int reloc;
|
||
};
|
||
|
||
char ident[20];
|
||
char *str = *str_p;
|
||
char *str2;
|
||
int ch;
|
||
int len;
|
||
const struct map_bfd *ptr;
|
||
|
||
#define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
|
||
#define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
|
||
#define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
|
||
|
||
static const struct map_bfd mapping[] = {
|
||
MAP ("l", BFD_RELOC_LO16),
|
||
MAP ("h", BFD_RELOC_HI16),
|
||
MAP ("ha", BFD_RELOC_HI16_S),
|
||
MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
|
||
MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
|
||
MAP ("got", BFD_RELOC_16_GOTOFF),
|
||
MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
|
||
MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
|
||
MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
|
||
MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
|
||
MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
|
||
MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
|
||
MAP ("copy", BFD_RELOC_PPC_COPY),
|
||
MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
|
||
MAP ("sectoff", BFD_RELOC_16_BASEREL),
|
||
MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
|
||
MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
|
||
MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
|
||
MAP ("tls", BFD_RELOC_PPC_TLS),
|
||
MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD),
|
||
MAP ("dtprel", BFD_RELOC_PPC_DTPREL),
|
||
MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO),
|
||
MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI),
|
||
MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA),
|
||
MAP ("tprel", BFD_RELOC_PPC_TPREL),
|
||
MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO),
|
||
MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI),
|
||
MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA),
|
||
MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16),
|
||
MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO),
|
||
MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI),
|
||
MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA),
|
||
MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16),
|
||
MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO),
|
||
MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI),
|
||
MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA),
|
||
MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16),
|
||
MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO),
|
||
MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI),
|
||
MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA),
|
||
MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16),
|
||
MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO),
|
||
MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI),
|
||
MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA),
|
||
MAP32 ("fixup", BFD_RELOC_CTOR),
|
||
MAP32 ("plt", BFD_RELOC_24_PLT_PCREL),
|
||
MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL),
|
||
MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
|
||
MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC),
|
||
MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL),
|
||
MAP32 ("sdarel", BFD_RELOC_GPREL16),
|
||
MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A),
|
||
MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A),
|
||
MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A),
|
||
MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
|
||
MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
|
||
MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
|
||
MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
|
||
MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
|
||
MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
|
||
MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
|
||
MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
|
||
MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21),
|
||
MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO),
|
||
MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
|
||
MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
|
||
MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
|
||
MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
|
||
MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
|
||
MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
|
||
MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
|
||
MAP32 ("xgot", BFD_RELOC_PPC_TOC16),
|
||
MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH),
|
||
MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA),
|
||
MAP64 ("higher", BFD_RELOC_PPC64_HIGHER),
|
||
MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S),
|
||
MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST),
|
||
MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S),
|
||
MAP64 ("tocbase", BFD_RELOC_PPC64_TOC),
|
||
MAP64 ("toc", BFD_RELOC_PPC_TOC16),
|
||
MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO),
|
||
MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI),
|
||
MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA),
|
||
MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH),
|
||
MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA),
|
||
MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER),
|
||
MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA),
|
||
MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST),
|
||
MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
|
||
MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL),
|
||
MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH),
|
||
MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA),
|
||
MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER),
|
||
MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA),
|
||
MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST),
|
||
MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA),
|
||
{ (char *) 0, 0, 0, 0, BFD_RELOC_NONE }
|
||
};
|
||
|
||
if (*str++ != '@')
|
||
return BFD_RELOC_NONE;
|
||
|
||
for (ch = *str, str2 = ident;
|
||
(str2 < ident + sizeof (ident) - 1
|
||
&& (ISALNUM (ch) || ch == '@'));
|
||
ch = *++str)
|
||
{
|
||
*str2++ = TOLOWER (ch);
|
||
}
|
||
|
||
*str2 = '\0';
|
||
len = str2 - ident;
|
||
|
||
ch = ident[0];
|
||
for (ptr = &mapping[0]; ptr->length > 0; ptr++)
|
||
if (ch == ptr->string[0]
|
||
&& len == ptr->length
|
||
&& memcmp (ident, ptr->string, ptr->length) == 0
|
||
&& (ppc_obj64 ? ptr->valid64 : ptr->valid32))
|
||
{
|
||
int reloc = ptr->reloc;
|
||
|
||
if (!ppc_obj64 && exp_p->X_add_number != 0)
|
||
{
|
||
switch (reloc)
|
||
{
|
||
case BFD_RELOC_16_GOTOFF:
|
||
case BFD_RELOC_LO16_GOTOFF:
|
||
case BFD_RELOC_HI16_GOTOFF:
|
||
case BFD_RELOC_HI16_S_GOTOFF:
|
||
as_warn (_("identifier+constant@got means "
|
||
"identifier@got+constant"));
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_GOT_TLSGD16:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_LO:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HI:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HA:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_LO:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HI:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HA:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HI:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HA:
|
||
case BFD_RELOC_PPC_GOT_TPREL16:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HI:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HA:
|
||
as_bad (_("symbol+offset not supported for got tls"));
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Now check for identifier@suffix+constant. */
|
||
if (*str == '-' || *str == '+')
|
||
{
|
||
char *orig_line = input_line_pointer;
|
||
expressionS new_exp;
|
||
|
||
input_line_pointer = str;
|
||
expression (&new_exp);
|
||
if (new_exp.X_op == O_constant)
|
||
{
|
||
exp_p->X_add_number += new_exp.X_add_number;
|
||
str = input_line_pointer;
|
||
}
|
||
|
||
if (&input_line_pointer != str_p)
|
||
input_line_pointer = orig_line;
|
||
}
|
||
*str_p = str;
|
||
|
||
if (reloc == (int) BFD_RELOC_PPC64_TOC
|
||
&& exp_p->X_op == O_symbol
|
||
&& strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0)
|
||
{
|
||
/* Change the symbol so that the dummy .TOC. symbol can be
|
||
omitted from the object file. */
|
||
exp_p->X_add_symbol = &abs_symbol;
|
||
}
|
||
|
||
return (bfd_reloc_code_real_type) reloc;
|
||
}
|
||
|
||
return BFD_RELOC_NONE;
|
||
}
|
||
|
||
/* Support @got, etc. on constants emitted via .short, .int etc. */
|
||
|
||
bfd_reloc_code_real_type
|
||
ppc_elf_parse_cons (expressionS *exp, unsigned int nbytes)
|
||
{
|
||
expression (exp);
|
||
if (nbytes >= 2 && *input_line_pointer == '@')
|
||
return ppc_elf_suffix (&input_line_pointer, exp);
|
||
return BFD_RELOC_NONE;
|
||
}
|
||
|
||
/* Warn when emitting data to code sections, unless we are emitting
|
||
a relocation that ld --ppc476-workaround uses to recognise data
|
||
*and* there was an unconditional branch prior to the data. */
|
||
|
||
void
|
||
ppc_elf_cons_fix_check (expressionS *exp ATTRIBUTE_UNUSED,
|
||
unsigned int nbytes, fixS *fix)
|
||
{
|
||
if (warn_476
|
||
&& (now_seg->flags & SEC_CODE) != 0
|
||
&& (nbytes != 4
|
||
|| fix == NULL
|
||
|| !(fix->fx_r_type == BFD_RELOC_32
|
||
|| fix->fx_r_type == BFD_RELOC_CTOR
|
||
|| fix->fx_r_type == BFD_RELOC_32_PCREL)
|
||
|| !(last_seg == now_seg && last_subseg == now_subseg)
|
||
|| !((last_insn & (0x3f << 26)) == (18u << 26)
|
||
|| ((last_insn & (0x3f << 26)) == (16u << 26)
|
||
&& (last_insn & (0x14 << 21)) == (0x14 << 21))
|
||
|| ((last_insn & (0x3f << 26)) == (19u << 26)
|
||
&& (last_insn & (0x3ff << 1)) == (16u << 1)
|
||
&& (last_insn & (0x14 << 21)) == (0x14 << 21)))))
|
||
{
|
||
/* Flag that we've warned. */
|
||
if (fix != NULL)
|
||
fix->fx_tcbit = 1;
|
||
|
||
as_warn (_("data in executable section"));
|
||
}
|
||
}
|
||
|
||
/* Solaris pseduo op to change to the .rodata section. */
|
||
static void
|
||
ppc_elf_rdata (int xxx)
|
||
{
|
||
char *save_line = input_line_pointer;
|
||
static char section[] = ".rodata\n";
|
||
|
||
/* Just pretend this is .section .rodata */
|
||
input_line_pointer = section;
|
||
obj_elf_section (xxx);
|
||
|
||
input_line_pointer = save_line;
|
||
}
|
||
|
||
/* Pseudo op to make file scope bss items. */
|
||
static void
|
||
ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char c;
|
||
char *p;
|
||
offsetT size;
|
||
symbolS *symbolP;
|
||
offsetT align;
|
||
segT old_sec;
|
||
int old_subsec;
|
||
char *pfrag;
|
||
int align2;
|
||
|
||
name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
/* just after name is now '\0'. */
|
||
p = input_line_pointer;
|
||
*p = c;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("expected comma after symbol-name: rest of line ignored."));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
input_line_pointer++; /* skip ',' */
|
||
if ((size = get_absolute_expression ()) < 0)
|
||
{
|
||
as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
/* The third argument to .lcomm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
align = 8;
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 8;
|
||
}
|
||
}
|
||
|
||
*p = 0;
|
||
symbolP = symbol_find_or_make (name);
|
||
*p = c;
|
||
|
||
if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
|
||
{
|
||
as_bad (_("ignoring attempt to re-define symbol `%s'."),
|
||
S_GET_NAME (symbolP));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
|
||
{
|
||
as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
|
||
S_GET_NAME (symbolP),
|
||
(long) S_GET_VALUE (symbolP),
|
||
(long) size);
|
||
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
/* Allocate_bss. */
|
||
old_sec = now_seg;
|
||
old_subsec = now_subseg;
|
||
if (align)
|
||
{
|
||
/* Convert to a power of 2 alignment. */
|
||
for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
|
||
if (align != 1)
|
||
{
|
||
as_bad (_("common alignment not a power of 2"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
}
|
||
else
|
||
align2 = 0;
|
||
|
||
record_alignment (bss_section, align2);
|
||
subseg_set (bss_section, 1);
|
||
if (align2)
|
||
frag_align (align2, 0, 0);
|
||
if (S_GET_SEGMENT (symbolP) == bss_section)
|
||
symbol_get_frag (symbolP)->fr_symbol = 0;
|
||
symbol_set_frag (symbolP, frag_now);
|
||
pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
|
||
(char *) 0);
|
||
*pfrag = 0;
|
||
S_SET_SIZE (symbolP, size);
|
||
S_SET_SEGMENT (symbolP, bss_section);
|
||
subseg_set (old_sec, old_subsec);
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Pseudo op to set symbol local entry point. */
|
||
static void
|
||
ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name = input_line_pointer;
|
||
char c = get_symbol_end ();
|
||
char *p;
|
||
expressionS exp;
|
||
symbolS *sym;
|
||
asymbol *bfdsym;
|
||
elf_symbol_type *elfsym;
|
||
|
||
p = input_line_pointer;
|
||
*p = c;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
*p = 0;
|
||
as_bad (_("expected comma after name `%s' in .localentry directive"),
|
||
name);
|
||
*p = c;
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
input_line_pointer++;
|
||
expression (&exp);
|
||
if (exp.X_op == O_absent)
|
||
{
|
||
as_bad (_("missing expression in .localentry directive"));
|
||
exp.X_op = O_constant;
|
||
exp.X_add_number = 0;
|
||
}
|
||
*p = 0;
|
||
sym = symbol_find_or_make (name);
|
||
*p = c;
|
||
|
||
if (resolve_expression (&exp)
|
||
&& exp.X_op == O_constant)
|
||
{
|
||
unsigned char encoded = PPC64_SET_LOCAL_ENTRY_OFFSET (exp.X_add_number);
|
||
|
||
if (exp.X_add_number != (offsetT) PPC64_LOCAL_ENTRY_OFFSET (encoded))
|
||
as_bad (_(".localentry expression for `%s' "
|
||
"is not a valid power of 2"), S_GET_NAME (sym));
|
||
else
|
||
{
|
||
bfdsym = symbol_get_bfdsym (sym);
|
||
elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
|
||
gas_assert (elfsym);
|
||
elfsym->internal_elf_sym.st_other &= ~STO_PPC64_LOCAL_MASK;
|
||
elfsym->internal_elf_sym.st_other |= encoded;
|
||
if (ppc_abiversion == 0)
|
||
ppc_abiversion = 2;
|
||
}
|
||
}
|
||
else
|
||
as_bad (_(".localentry expression for `%s' "
|
||
"does not evaluate to a constant"), S_GET_NAME (sym));
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Pseudo op to set ABI version. */
|
||
static void
|
||
ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
expressionS exp;
|
||
|
||
expression (&exp);
|
||
if (exp.X_op == O_absent)
|
||
{
|
||
as_bad (_("missing expression in .abiversion directive"));
|
||
exp.X_op = O_constant;
|
||
exp.X_add_number = 0;
|
||
}
|
||
|
||
if (resolve_expression (&exp)
|
||
&& exp.X_op == O_constant)
|
||
ppc_abiversion = exp.X_add_number;
|
||
else
|
||
as_bad (_(".abiversion expression does not evaluate to a constant"));
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Set ABI version in output file. */
|
||
void
|
||
ppc_elf_end (void)
|
||
{
|
||
if (ppc_obj64 && ppc_abiversion != 0)
|
||
{
|
||
elf_elfheader (stdoutput)->e_flags &= ~EF_PPC64_ABI;
|
||
elf_elfheader (stdoutput)->e_flags |= ppc_abiversion & EF_PPC64_ABI;
|
||
}
|
||
}
|
||
|
||
/* Validate any relocations emitted for -mrelocatable, possibly adding
|
||
fixups for word relocations in writable segments, so we can adjust
|
||
them at runtime. */
|
||
static void
|
||
ppc_elf_validate_fix (fixS *fixp, segT seg)
|
||
{
|
||
if (fixp->fx_done || fixp->fx_pcrel)
|
||
return;
|
||
|
||
switch (shlib)
|
||
{
|
||
case SHLIB_NONE:
|
||
case SHLIB_PIC:
|
||
return;
|
||
|
||
case SHLIB_MRELOCATABLE:
|
||
if (fixp->fx_r_type != BFD_RELOC_16_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
|
||
&& fixp->fx_r_type != BFD_RELOC_16_BASEREL
|
||
&& fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
|
||
&& fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
|
||
&& (seg->flags & SEC_LOAD) != 0
|
||
&& strcmp (segment_name (seg), ".got2") != 0
|
||
&& strcmp (segment_name (seg), ".dtors") != 0
|
||
&& strcmp (segment_name (seg), ".ctors") != 0
|
||
&& strcmp (segment_name (seg), ".fixup") != 0
|
||
&& strcmp (segment_name (seg), ".gcc_except_table") != 0
|
||
&& strcmp (segment_name (seg), ".eh_frame") != 0
|
||
&& strcmp (segment_name (seg), ".ex_shared") != 0)
|
||
{
|
||
if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
|
||
|| fixp->fx_r_type != BFD_RELOC_CTOR)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("relocation cannot be done when using -mrelocatable"));
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Prevent elf_frob_file_before_adjust removing a weak undefined
|
||
function descriptor sym if the corresponding code sym is used. */
|
||
|
||
void
|
||
ppc_frob_file_before_adjust (void)
|
||
{
|
||
symbolS *symp;
|
||
asection *toc;
|
||
|
||
if (!ppc_obj64)
|
||
return;
|
||
|
||
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
||
{
|
||
const char *name;
|
||
char *dotname;
|
||
symbolS *dotsym;
|
||
size_t len;
|
||
|
||
name = S_GET_NAME (symp);
|
||
if (name[0] == '.')
|
||
continue;
|
||
|
||
if (! S_IS_WEAK (symp)
|
||
|| S_IS_DEFINED (symp))
|
||
continue;
|
||
|
||
len = strlen (name) + 1;
|
||
dotname = xmalloc (len + 1);
|
||
dotname[0] = '.';
|
||
memcpy (dotname + 1, name, len);
|
||
dotsym = symbol_find_noref (dotname, 1);
|
||
free (dotname);
|
||
if (dotsym != NULL && (symbol_used_p (dotsym)
|
||
|| symbol_used_in_reloc_p (dotsym)))
|
||
symbol_mark_used (symp);
|
||
|
||
}
|
||
|
||
toc = bfd_get_section_by_name (stdoutput, ".toc");
|
||
if (toc != NULL
|
||
&& toc_reloc_types != has_large_toc_reloc
|
||
&& bfd_section_size (stdoutput, toc) > 0x10000)
|
||
as_warn (_("TOC section size exceeds 64k"));
|
||
}
|
||
|
||
/* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be
|
||
emitted. Other uses of .TOC. will cause the symbol to be marked
|
||
with BSF_KEEP in md_apply_fix. */
|
||
|
||
void
|
||
ppc_elf_adjust_symtab (void)
|
||
{
|
||
if (ppc_obj64)
|
||
{
|
||
symbolS *symp;
|
||
symp = symbol_find (".TOC.");
|
||
if (symp != NULL)
|
||
{
|
||
asymbol *bsym = symbol_get_bfdsym (symp);
|
||
if ((bsym->flags & BSF_KEEP) == 0)
|
||
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
||
}
|
||
}
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
#ifdef TE_PE
|
||
|
||
/*
|
||
* Summary of parse_toc_entry.
|
||
*
|
||
* in: Input_line_pointer points to the '[' in one of:
|
||
*
|
||
* [toc] [tocv] [toc32] [toc64]
|
||
*
|
||
* Anything else is an error of one kind or another.
|
||
*
|
||
* out:
|
||
* return value: success or failure
|
||
* toc_kind: kind of toc reference
|
||
* input_line_pointer:
|
||
* success: first char after the ']'
|
||
* failure: unchanged
|
||
*
|
||
* settings:
|
||
*
|
||
* [toc] - rv == success, toc_kind = default_toc
|
||
* [tocv] - rv == success, toc_kind = data_in_toc
|
||
* [toc32] - rv == success, toc_kind = must_be_32
|
||
* [toc64] - rv == success, toc_kind = must_be_64
|
||
*
|
||
*/
|
||
|
||
enum toc_size_qualifier
|
||
{
|
||
default_toc, /* The toc cell constructed should be the system default size */
|
||
data_in_toc, /* This is a direct reference to a toc cell */
|
||
must_be_32, /* The toc cell constructed must be 32 bits wide */
|
||
must_be_64 /* The toc cell constructed must be 64 bits wide */
|
||
};
|
||
|
||
static int
|
||
parse_toc_entry (enum toc_size_qualifier *toc_kind)
|
||
{
|
||
char *start;
|
||
char *toc_spec;
|
||
char c;
|
||
enum toc_size_qualifier t;
|
||
|
||
/* Save the input_line_pointer. */
|
||
start = input_line_pointer;
|
||
|
||
/* Skip over the '[' , and whitespace. */
|
||
++input_line_pointer;
|
||
SKIP_WHITESPACE ();
|
||
|
||
/* Find the spelling of the operand. */
|
||
toc_spec = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
if (strcmp (toc_spec, "toc") == 0)
|
||
{
|
||
t = default_toc;
|
||
}
|
||
else if (strcmp (toc_spec, "tocv") == 0)
|
||
{
|
||
t = data_in_toc;
|
||
}
|
||
else if (strcmp (toc_spec, "toc32") == 0)
|
||
{
|
||
t = must_be_32;
|
||
}
|
||
else if (strcmp (toc_spec, "toc64") == 0)
|
||
{
|
||
t = must_be_64;
|
||
}
|
||
else
|
||
{
|
||
as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
|
||
*input_line_pointer = c;
|
||
input_line_pointer = start;
|
||
return 0;
|
||
}
|
||
|
||
/* Now find the ']'. */
|
||
*input_line_pointer = c;
|
||
|
||
SKIP_WHITESPACE (); /* leading whitespace could be there. */
|
||
c = *input_line_pointer++; /* input_line_pointer->past char in c. */
|
||
|
||
if (c != ']')
|
||
{
|
||
as_bad (_("syntax error: expected `]', found `%c'"), c);
|
||
input_line_pointer = start;
|
||
return 0;
|
||
}
|
||
|
||
*toc_kind = t;
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
|
||
/* See whether a symbol is in the TOC section. */
|
||
|
||
static int
|
||
ppc_is_toc_sym (symbolS *sym)
|
||
{
|
||
#ifdef OBJ_XCOFF
|
||
return (symbol_get_tc (sym)->symbol_class == XMC_TC
|
||
|| symbol_get_tc (sym)->symbol_class == XMC_TC0);
|
||
#endif
|
||
#ifdef OBJ_ELF
|
||
const char *sname = segment_name (S_GET_SEGMENT (sym));
|
||
if (ppc_obj64)
|
||
return strcmp (sname, ".toc") == 0;
|
||
else
|
||
return strcmp (sname, ".got") == 0;
|
||
#endif
|
||
}
|
||
#endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
|
||
|
||
|
||
#ifdef OBJ_ELF
|
||
#define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
|
||
static void
|
||
ppc_apuinfo_section_add (unsigned int apu, unsigned int version)
|
||
{
|
||
unsigned int i;
|
||
|
||
/* Check we don't already exist. */
|
||
for (i = 0; i < ppc_apuinfo_num; i++)
|
||
if (ppc_apuinfo_list[i] == APUID (apu, version))
|
||
return;
|
||
|
||
if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
|
||
{
|
||
if (ppc_apuinfo_num_alloc == 0)
|
||
{
|
||
ppc_apuinfo_num_alloc = 4;
|
||
ppc_apuinfo_list = (unsigned long *)
|
||
xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc);
|
||
}
|
||
else
|
||
{
|
||
ppc_apuinfo_num_alloc += 4;
|
||
ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list,
|
||
sizeof (unsigned long) * ppc_apuinfo_num_alloc);
|
||
}
|
||
}
|
||
ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
|
||
}
|
||
#undef APUID
|
||
#endif
|
||
|
||
|
||
/* We need to keep a list of fixups. We can't simply generate them as
|
||
we go, because that would require us to first create the frag, and
|
||
that would screw up references to ``.''. */
|
||
|
||
struct ppc_fixup
|
||
{
|
||
expressionS exp;
|
||
int opindex;
|
||
bfd_reloc_code_real_type reloc;
|
||
};
|
||
|
||
#define MAX_INSN_FIXUPS (5)
|
||
|
||
/* Form I16L. */
|
||
#define E_OR2I_INSN 0x7000C000
|
||
#define E_AND2I_DOT_INSN 0x7000C800
|
||
#define E_OR2IS_INSN 0x7000D000
|
||
#define E_LIS_INSN 0x7000E000
|
||
#define E_AND2IS_DOT_INSN 0x7000E800
|
||
|
||
/* Form I16A. */
|
||
#define E_ADD2I_DOT_INSN 0x70008800
|
||
#define E_ADD2IS_INSN 0x70009000
|
||
#define E_CMP16I_INSN 0x70009800
|
||
#define E_MULL2I_INSN 0x7000A000
|
||
#define E_CMPL16I_INSN 0x7000A800
|
||
#define E_CMPH16I_INSN 0x7000B000
|
||
#define E_CMPHL16I_INSN 0x7000B800
|
||
|
||
/* This routine is called for each instruction to be assembled. */
|
||
|
||
void
|
||
md_assemble (char *str)
|
||
{
|
||
char *s;
|
||
const struct powerpc_opcode *opcode;
|
||
unsigned long insn;
|
||
const unsigned char *opindex_ptr;
|
||
int skip_optional;
|
||
int need_paren;
|
||
int next_opindex;
|
||
struct ppc_fixup fixups[MAX_INSN_FIXUPS];
|
||
int fc;
|
||
char *f;
|
||
int addr_mod;
|
||
int i;
|
||
unsigned int insn_length;
|
||
|
||
/* Get the opcode. */
|
||
for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
|
||
;
|
||
if (*s != '\0')
|
||
*s++ = '\0';
|
||
|
||
/* Look up the opcode in the hash table. */
|
||
opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
|
||
if (opcode == (const struct powerpc_opcode *) NULL)
|
||
{
|
||
const struct powerpc_macro *macro;
|
||
|
||
macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
|
||
if (macro == (const struct powerpc_macro *) NULL)
|
||
as_bad (_("unrecognized opcode: `%s'"), str);
|
||
else
|
||
ppc_macro (s, macro);
|
||
|
||
return;
|
||
}
|
||
|
||
insn = opcode->opcode;
|
||
|
||
str = s;
|
||
while (ISSPACE (*str))
|
||
++str;
|
||
|
||
/* PowerPC operands are just expressions. The only real issue is
|
||
that a few operand types are optional. All cases which might use
|
||
an optional operand separate the operands only with commas (in some
|
||
cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
|
||
have optional operands). Most instructions with optional operands
|
||
have only one. Those that have more than one optional operand can
|
||
take either all their operands or none. So, before we start seriously
|
||
parsing the operands, we check to see if we have optional operands,
|
||
and if we do, we count the number of commas to see which operands
|
||
have been omitted. */
|
||
skip_optional = 0;
|
||
for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
|
||
{
|
||
const struct powerpc_operand *operand;
|
||
|
||
operand = &powerpc_operands[*opindex_ptr];
|
||
if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
|
||
{
|
||
unsigned int opcount;
|
||
unsigned int num_operands_expected;
|
||
|
||
/* There is an optional operand. Count the number of
|
||
commas in the input line. */
|
||
if (*str == '\0')
|
||
opcount = 0;
|
||
else
|
||
{
|
||
opcount = 1;
|
||
s = str;
|
||
while ((s = strchr (s, ',')) != (char *) NULL)
|
||
{
|
||
++opcount;
|
||
++s;
|
||
}
|
||
}
|
||
|
||
/* Compute the number of expected operands.
|
||
Do not count fake operands. */
|
||
for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++)
|
||
if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0)
|
||
++ num_operands_expected;
|
||
|
||
/* If there are fewer operands in the line then are called
|
||
for by the instruction, we want to skip the optional
|
||
operands. */
|
||
if (opcount < num_operands_expected)
|
||
skip_optional = 1;
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Gather the operands. */
|
||
need_paren = 0;
|
||
next_opindex = 0;
|
||
fc = 0;
|
||
for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
|
||
{
|
||
const struct powerpc_operand *operand;
|
||
const char *errmsg;
|
||
char *hold;
|
||
expressionS ex;
|
||
char endc;
|
||
|
||
if (next_opindex == 0)
|
||
operand = &powerpc_operands[*opindex_ptr];
|
||
else
|
||
{
|
||
operand = &powerpc_operands[next_opindex];
|
||
next_opindex = 0;
|
||
}
|
||
errmsg = NULL;
|
||
|
||
/* If this is a fake operand, then we do not expect anything
|
||
from the input. */
|
||
if ((operand->flags & PPC_OPERAND_FAKE) != 0)
|
||
{
|
||
insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
|
||
if (errmsg != (const char *) NULL)
|
||
as_bad ("%s", errmsg);
|
||
continue;
|
||
}
|
||
|
||
/* If this is an optional operand, and we are skipping it, just
|
||
insert a zero. */
|
||
if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
|
||
&& skip_optional)
|
||
{
|
||
long val = ppc_optional_operand_value (operand);
|
||
if (operand->insert)
|
||
{
|
||
insn = (*operand->insert) (insn, val, ppc_cpu, &errmsg);
|
||
if (errmsg != (const char *) NULL)
|
||
as_bad ("%s", errmsg);
|
||
}
|
||
else if (operand->shift >= 0)
|
||
insn |= ((long) val & operand->bitm) << operand->shift;
|
||
else
|
||
insn |= ((long) val & operand->bitm) >> -operand->shift;
|
||
|
||
if ((operand->flags & PPC_OPERAND_NEXT) != 0)
|
||
next_opindex = *opindex_ptr + 1;
|
||
continue;
|
||
}
|
||
|
||
/* Gather the operand. */
|
||
hold = input_line_pointer;
|
||
input_line_pointer = str;
|
||
|
||
#ifdef TE_PE
|
||
if (*input_line_pointer == '[')
|
||
{
|
||
/* We are expecting something like the second argument here:
|
||
*
|
||
* lwz r4,[toc].GS.0.static_int(rtoc)
|
||
* ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||
* The argument following the `]' must be a symbol name, and the
|
||
* register must be the toc register: 'rtoc' or '2'
|
||
*
|
||
* The effect is to 0 as the displacement field
|
||
* in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
|
||
* the appropriate variation) reloc against it based on the symbol.
|
||
* The linker will build the toc, and insert the resolved toc offset.
|
||
*
|
||
* Note:
|
||
* o The size of the toc entry is currently assumed to be
|
||
* 32 bits. This should not be assumed to be a hard coded
|
||
* number.
|
||
* o In an effort to cope with a change from 32 to 64 bits,
|
||
* there are also toc entries that are specified to be
|
||
* either 32 or 64 bits:
|
||
* lwz r4,[toc32].GS.0.static_int(rtoc)
|
||
* lwz r4,[toc64].GS.0.static_int(rtoc)
|
||
* These demand toc entries of the specified size, and the
|
||
* instruction probably requires it.
|
||
*/
|
||
|
||
int valid_toc;
|
||
enum toc_size_qualifier toc_kind;
|
||
bfd_reloc_code_real_type toc_reloc;
|
||
|
||
/* Go parse off the [tocXX] part. */
|
||
valid_toc = parse_toc_entry (&toc_kind);
|
||
|
||
if (!valid_toc)
|
||
{
|
||
ignore_rest_of_line ();
|
||
break;
|
||
}
|
||
|
||
/* Now get the symbol following the ']'. */
|
||
expression (&ex);
|
||
|
||
switch (toc_kind)
|
||
{
|
||
case default_toc:
|
||
/* In this case, we may not have seen the symbol yet,
|
||
since it is allowed to appear on a .extern or .globl
|
||
or just be a label in the .data section. */
|
||
toc_reloc = BFD_RELOC_PPC_TOC16;
|
||
break;
|
||
case data_in_toc:
|
||
/* 1. The symbol must be defined and either in the toc
|
||
section, or a global.
|
||
2. The reloc generated must have the TOCDEFN flag set
|
||
in upper bit mess of the reloc type.
|
||
FIXME: It's a little confusing what the tocv
|
||
qualifier can be used for. At the very least, I've
|
||
seen three uses, only one of which I'm sure I can
|
||
explain. */
|
||
if (ex.X_op == O_symbol)
|
||
{
|
||
gas_assert (ex.X_add_symbol != NULL);
|
||
if (symbol_get_bfdsym (ex.X_add_symbol)->section
|
||
!= tocdata_section)
|
||
{
|
||
as_bad (_("[tocv] symbol is not a toc symbol"));
|
||
}
|
||
}
|
||
|
||
toc_reloc = BFD_RELOC_PPC_TOC16;
|
||
break;
|
||
case must_be_32:
|
||
/* FIXME: these next two specifically specify 32/64 bit
|
||
toc entries. We don't support them today. Is this
|
||
the right way to say that? */
|
||
toc_reloc = BFD_RELOC_NONE;
|
||
as_bad (_("unimplemented toc32 expression modifier"));
|
||
break;
|
||
case must_be_64:
|
||
/* FIXME: see above. */
|
||
toc_reloc = BFD_RELOC_NONE;
|
||
as_bad (_("unimplemented toc64 expression modifier"));
|
||
break;
|
||
default:
|
||
fprintf (stderr,
|
||
_("Unexpected return value [%d] from parse_toc_entry!\n"),
|
||
toc_kind);
|
||
abort ();
|
||
break;
|
||
}
|
||
|
||
/* We need to generate a fixup for this expression. */
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
|
||
fixups[fc].reloc = toc_reloc;
|
||
fixups[fc].exp = ex;
|
||
fixups[fc].opindex = *opindex_ptr;
|
||
++fc;
|
||
|
||
/* Ok. We've set up the fixup for the instruction. Now make it
|
||
look like the constant 0 was found here. */
|
||
ex.X_unsigned = 1;
|
||
ex.X_op = O_constant;
|
||
ex.X_add_number = 0;
|
||
ex.X_add_symbol = NULL;
|
||
ex.X_op_symbol = NULL;
|
||
}
|
||
|
||
else
|
||
#endif /* TE_PE */
|
||
{
|
||
if ((reg_names_p
|
||
&& (((operand->flags & PPC_OPERAND_CR_BIT) != 0)
|
||
|| ((operand->flags & PPC_OPERAND_CR_REG) != 0)))
|
||
|| !register_name (&ex))
|
||
{
|
||
char save_lex = lex_type['%'];
|
||
|
||
if (((operand->flags & PPC_OPERAND_CR_REG) != 0)
|
||
|| (operand->flags & PPC_OPERAND_CR_BIT) != 0)
|
||
{
|
||
cr_operand = TRUE;
|
||
lex_type['%'] |= LEX_BEGIN_NAME;
|
||
}
|
||
expression (&ex);
|
||
cr_operand = FALSE;
|
||
lex_type['%'] = save_lex;
|
||
}
|
||
}
|
||
|
||
str = input_line_pointer;
|
||
input_line_pointer = hold;
|
||
|
||
if (ex.X_op == O_illegal)
|
||
as_bad (_("illegal operand"));
|
||
else if (ex.X_op == O_absent)
|
||
as_bad (_("missing operand"));
|
||
else if (ex.X_op == O_register)
|
||
{
|
||
insn = ppc_insert_operand (insn, operand, ex.X_add_number,
|
||
ppc_cpu, (char *) NULL, 0);
|
||
}
|
||
else if (ex.X_op == O_constant)
|
||
{
|
||
#ifdef OBJ_ELF
|
||
/* Allow @HA, @L, @H on constants. */
|
||
bfd_reloc_code_real_type reloc;
|
||
char *orig_str = str;
|
||
|
||
if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE)
|
||
switch (reloc)
|
||
{
|
||
default:
|
||
str = orig_str;
|
||
break;
|
||
|
||
case BFD_RELOC_LO16:
|
||
ex.X_add_number &= 0xffff;
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
|
||
case BFD_RELOC_HI16:
|
||
if (REPORT_OVERFLOW_HI && ppc_obj64)
|
||
{
|
||
/* PowerPC64 @h is tested for overflow. */
|
||
ex.X_add_number = (addressT) ex.X_add_number >> 16;
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
{
|
||
addressT sign = (((addressT) -1 >> 16) + 1) >> 1;
|
||
ex.X_add_number
|
||
= ((addressT) ex.X_add_number ^ sign) - sign;
|
||
}
|
||
break;
|
||
}
|
||
/* Fall thru */
|
||
|
||
case BFD_RELOC_PPC64_ADDR16_HIGH:
|
||
ex.X_add_number = PPC_HI (ex.X_add_number);
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
|
||
case BFD_RELOC_HI16_S:
|
||
if (REPORT_OVERFLOW_HI && ppc_obj64)
|
||
{
|
||
/* PowerPC64 @ha is tested for overflow. */
|
||
ex.X_add_number
|
||
= ((addressT) ex.X_add_number + 0x8000) >> 16;
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
{
|
||
addressT sign = (((addressT) -1 >> 16) + 1) >> 1;
|
||
ex.X_add_number
|
||
= ((addressT) ex.X_add_number ^ sign) - sign;
|
||
}
|
||
break;
|
||
}
|
||
/* Fall thru */
|
||
|
||
case BFD_RELOC_PPC64_ADDR16_HIGHA:
|
||
ex.X_add_number = PPC_HA (ex.X_add_number);
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
|
||
case BFD_RELOC_PPC64_HIGHER:
|
||
ex.X_add_number = PPC_HIGHER (ex.X_add_number);
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
|
||
case BFD_RELOC_PPC64_HIGHER_S:
|
||
ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
|
||
case BFD_RELOC_PPC64_HIGHEST:
|
||
ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
|
||
case BFD_RELOC_PPC64_HIGHEST_S:
|
||
ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
|
||
if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
ex.X_add_number = SEX16 (ex.X_add_number);
|
||
break;
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
insn = ppc_insert_operand (insn, operand, ex.X_add_number,
|
||
ppc_cpu, (char *) NULL, 0);
|
||
}
|
||
else
|
||
{
|
||
bfd_reloc_code_real_type reloc = BFD_RELOC_NONE;
|
||
#ifdef OBJ_ELF
|
||
if (ex.X_op == O_symbol && str[0] == '(')
|
||
{
|
||
const char *sym_name = S_GET_NAME (ex.X_add_symbol);
|
||
if (sym_name[0] == '.')
|
||
++sym_name;
|
||
|
||
if (strcasecmp (sym_name, "__tls_get_addr") == 0)
|
||
{
|
||
expressionS tls_exp;
|
||
|
||
hold = input_line_pointer;
|
||
input_line_pointer = str + 1;
|
||
expression (&tls_exp);
|
||
if (tls_exp.X_op == O_symbol)
|
||
{
|
||
reloc = BFD_RELOC_NONE;
|
||
if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0)
|
||
{
|
||
reloc = BFD_RELOC_PPC_TLSGD;
|
||
input_line_pointer += 7;
|
||
}
|
||
else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0)
|
||
{
|
||
reloc = BFD_RELOC_PPC_TLSLD;
|
||
input_line_pointer += 7;
|
||
}
|
||
if (reloc != BFD_RELOC_NONE)
|
||
{
|
||
SKIP_WHITESPACE ();
|
||
str = input_line_pointer;
|
||
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
fixups[fc].exp = tls_exp;
|
||
fixups[fc].opindex = *opindex_ptr;
|
||
fixups[fc].reloc = reloc;
|
||
++fc;
|
||
}
|
||
}
|
||
input_line_pointer = hold;
|
||
}
|
||
}
|
||
|
||
if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_NONE)
|
||
{
|
||
/* Some TLS tweaks. */
|
||
switch (reloc)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_TLS:
|
||
if (!_bfd_elf_ppc_at_tls_transform (opcode->opcode, 0))
|
||
as_bad (_("@tls may not be used with \"%s\" operands"),
|
||
opcode->name);
|
||
else if (operand->shift != 11)
|
||
as_bad (_("@tls may only be used in last operand"));
|
||
else
|
||
insn = ppc_insert_operand (insn, operand,
|
||
ppc_obj64 ? 13 : 2,
|
||
ppc_cpu, (char *) NULL, 0);
|
||
break;
|
||
|
||
/* We'll only use the 32 (or 64) bit form of these relocations
|
||
in constants. Instructions get the 16 bit form. */
|
||
case BFD_RELOC_PPC_DTPREL:
|
||
reloc = BFD_RELOC_PPC_DTPREL16;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL:
|
||
reloc = BFD_RELOC_PPC_TPREL16;
|
||
break;
|
||
}
|
||
|
||
/* If VLE-mode convert LO/HI/HA relocations. */
|
||
if (opcode->flags & PPC_OPCODE_VLE)
|
||
{
|
||
int tmp_insn = insn & opcode->mask;
|
||
|
||
int use_d_reloc = (tmp_insn == E_OR2I_INSN
|
||
|| tmp_insn == E_AND2I_DOT_INSN
|
||
|| tmp_insn == E_OR2IS_INSN
|
||
|| tmp_insn == E_LIS_INSN
|
||
|| tmp_insn == E_AND2IS_DOT_INSN);
|
||
|
||
|
||
int use_a_reloc = (tmp_insn == E_ADD2I_DOT_INSN
|
||
|| tmp_insn == E_ADD2IS_INSN
|
||
|| tmp_insn == E_CMP16I_INSN
|
||
|| tmp_insn == E_MULL2I_INSN
|
||
|| tmp_insn == E_CMPL16I_INSN
|
||
|| tmp_insn == E_CMPH16I_INSN
|
||
|| tmp_insn == E_CMPHL16I_INSN);
|
||
|
||
switch (reloc)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_EMB_SDA21:
|
||
reloc = BFD_RELOC_PPC_VLE_SDA21;
|
||
break;
|
||
|
||
case BFD_RELOC_LO16:
|
||
if (use_d_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_LO16D;
|
||
else if (use_a_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_LO16A;
|
||
break;
|
||
|
||
case BFD_RELOC_HI16:
|
||
if (use_d_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_HI16D;
|
||
else if (use_a_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_HI16A;
|
||
break;
|
||
|
||
case BFD_RELOC_HI16_S:
|
||
if (use_d_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_HA16D;
|
||
else if (use_a_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_HA16A;
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
|
||
if (use_d_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_SDAREL_LO16D;
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
|
||
if (use_d_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_SDAREL_HI16D;
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
|
||
if (use_d_reloc)
|
||
reloc = BFD_RELOC_PPC_VLE_SDAREL_HA16D;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
if (reloc != BFD_RELOC_NONE)
|
||
;
|
||
/* Determine a BFD reloc value based on the operand information.
|
||
We are only prepared to turn a few of the operands into
|
||
relocs. */
|
||
else if ((operand->flags & (PPC_OPERAND_RELATIVE
|
||
| PPC_OPERAND_ABSOLUTE)) != 0
|
||
&& operand->bitm == 0x3fffffc
|
||
&& operand->shift == 0)
|
||
reloc = BFD_RELOC_PPC_B26;
|
||
else if ((operand->flags & (PPC_OPERAND_RELATIVE
|
||
| PPC_OPERAND_ABSOLUTE)) != 0
|
||
&& operand->bitm == 0xfffc
|
||
&& operand->shift == 0)
|
||
reloc = BFD_RELOC_PPC_B16;
|
||
else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
|
||
&& operand->bitm == 0x1fe
|
||
&& operand->shift == -1)
|
||
reloc = BFD_RELOC_PPC_VLE_REL8;
|
||
else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
|
||
&& operand->bitm == 0xfffe
|
||
&& operand->shift == 0)
|
||
reloc = BFD_RELOC_PPC_VLE_REL15;
|
||
else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
|
||
&& operand->bitm == 0x1fffffe
|
||
&& operand->shift == 0)
|
||
reloc = BFD_RELOC_PPC_VLE_REL24;
|
||
else if ((operand->flags & PPC_OPERAND_NEGATIVE) == 0
|
||
&& (operand->bitm & 0xfff0) == 0xfff0
|
||
&& operand->shift == 0)
|
||
{
|
||
reloc = BFD_RELOC_16;
|
||
#if defined OBJ_XCOFF || defined OBJ_ELF
|
||
/* Note: the symbol may be not yet defined. */
|
||
if ((operand->flags & PPC_OPERAND_PARENS) != 0
|
||
&& ppc_is_toc_sym (ex.X_add_symbol))
|
||
{
|
||
reloc = BFD_RELOC_PPC_TOC16;
|
||
#ifdef OBJ_ELF
|
||
as_warn (_("assuming %s on symbol"),
|
||
ppc_obj64 ? "@toc" : "@xgot");
|
||
#endif
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* For the absolute forms of branches, convert the PC
|
||
relative form back into the absolute. */
|
||
if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
|
||
{
|
||
switch (reloc)
|
||
{
|
||
case BFD_RELOC_PPC_B26:
|
||
reloc = BFD_RELOC_PPC_BA26;
|
||
break;
|
||
case BFD_RELOC_PPC_B16:
|
||
reloc = BFD_RELOC_PPC_BA16;
|
||
break;
|
||
#ifdef OBJ_ELF
|
||
case BFD_RELOC_PPC_B16_BRTAKEN:
|
||
reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
|
||
break;
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN:
|
||
reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
|
||
break;
|
||
#endif
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
switch (reloc)
|
||
{
|
||
case BFD_RELOC_PPC_TOC16:
|
||
toc_reloc_types |= has_small_toc_reloc;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_LO:
|
||
case BFD_RELOC_PPC64_TOC16_HI:
|
||
case BFD_RELOC_PPC64_TOC16_HA:
|
||
toc_reloc_types |= has_large_toc_reloc;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (ppc_obj64
|
||
&& (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0)
|
||
{
|
||
switch (reloc)
|
||
{
|
||
case BFD_RELOC_16:
|
||
reloc = BFD_RELOC_PPC64_ADDR16_DS;
|
||
break;
|
||
case BFD_RELOC_LO16:
|
||
reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_16_GOTOFF:
|
||
reloc = BFD_RELOC_PPC64_GOT16_DS;
|
||
break;
|
||
case BFD_RELOC_LO16_GOTOFF:
|
||
reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_LO16_PLTOFF:
|
||
reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_16_BASEREL:
|
||
reloc = BFD_RELOC_PPC64_SECTOFF_DS;
|
||
break;
|
||
case BFD_RELOC_LO16_BASEREL:
|
||
reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_TOC16:
|
||
reloc = BFD_RELOC_PPC64_TOC16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_TOC16_LO:
|
||
reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16:
|
||
reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC64_PLTGOT16_LO:
|
||
reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL16:
|
||
reloc = BFD_RELOC_PPC64_DTPREL16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_DTPREL16_LO:
|
||
reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL16:
|
||
reloc = BFD_RELOC_PPC64_TPREL16_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_TPREL16_LO:
|
||
reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
|
||
break;
|
||
case BFD_RELOC_PPC_GOT_DTPREL16:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_TPREL16:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_LO:
|
||
break;
|
||
default:
|
||
as_bad (_("unsupported relocation for DS offset field"));
|
||
break;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/* We need to generate a fixup for this expression. */
|
||
if (fc >= MAX_INSN_FIXUPS)
|
||
as_fatal (_("too many fixups"));
|
||
fixups[fc].exp = ex;
|
||
fixups[fc].opindex = *opindex_ptr;
|
||
fixups[fc].reloc = reloc;
|
||
++fc;
|
||
}
|
||
|
||
if (need_paren)
|
||
{
|
||
endc = ')';
|
||
need_paren = 0;
|
||
/* If expecting more operands, then we want to see "),". */
|
||
if (*str == endc && opindex_ptr[1] != 0)
|
||
{
|
||
do
|
||
++str;
|
||
while (ISSPACE (*str));
|
||
endc = ',';
|
||
}
|
||
}
|
||
else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
|
||
{
|
||
endc = '(';
|
||
need_paren = 1;
|
||
}
|
||
else
|
||
endc = ',';
|
||
|
||
/* The call to expression should have advanced str past any
|
||
whitespace. */
|
||
if (*str != endc
|
||
&& (endc != ',' || *str != '\0'))
|
||
{
|
||
if (*str == '\0')
|
||
as_bad (_("syntax error; end of line, expected `%c'"), endc);
|
||
else
|
||
as_bad (_("syntax error; found `%c', expected `%c'"), *str, endc);
|
||
break;
|
||
}
|
||
|
||
if (*str != '\0')
|
||
++str;
|
||
}
|
||
|
||
while (ISSPACE (*str))
|
||
++str;
|
||
|
||
if (*str != '\0')
|
||
as_bad (_("junk at end of line: `%s'"), str);
|
||
|
||
#ifdef OBJ_ELF
|
||
/* Do we need/want an APUinfo section? */
|
||
if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0
|
||
&& !ppc_obj64)
|
||
{
|
||
/* These are all version "1". */
|
||
if (opcode->flags & PPC_OPCODE_SPE)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
|
||
if (opcode->flags & PPC_OPCODE_ISEL)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
|
||
if (opcode->flags & PPC_OPCODE_EFS)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
|
||
if (opcode->flags & PPC_OPCODE_BRLOCK)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
|
||
if (opcode->flags & PPC_OPCODE_PMR)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
|
||
if (opcode->flags & PPC_OPCODE_CACHELCK)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
|
||
if (opcode->flags & PPC_OPCODE_RFMCI)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
|
||
/* Only set the VLE flag if the instruction has been pulled via
|
||
the VLE instruction set. This way the flag is guaranteed to
|
||
be set for VLE-only instructions or for VLE-only processors,
|
||
however it'll remain clear for dual-mode instructions on
|
||
dual-mode and, more importantly, standard-mode processors. */
|
||
if ((ppc_cpu & opcode->flags) == PPC_OPCODE_VLE)
|
||
ppc_apuinfo_section_add (PPC_APUINFO_VLE, 1);
|
||
}
|
||
#endif
|
||
|
||
/* Write out the instruction. */
|
||
/* Differentiate between two and four byte insns. */
|
||
if (ppc_mach () == bfd_mach_ppc_vle)
|
||
{
|
||
if (PPC_OP_SE_VLE (insn))
|
||
insn_length = 2;
|
||
else
|
||
insn_length = 4;
|
||
addr_mod = frag_now_fix () & 1;
|
||
}
|
||
else
|
||
{
|
||
insn_length = 4;
|
||
addr_mod = frag_now_fix () & 3;
|
||
}
|
||
/* All instructions can start on a 2 byte boundary for VLE. */
|
||
f = frag_more (insn_length);
|
||
if (frag_now->has_code && frag_now->insn_addr != addr_mod)
|
||
{
|
||
if (ppc_mach() == bfd_mach_ppc_vle)
|
||
as_bad (_("instruction address is not a multiple of 2"));
|
||
else
|
||
as_bad (_("instruction address is not a multiple of 4"));
|
||
}
|
||
frag_now->insn_addr = addr_mod;
|
||
frag_now->has_code = 1;
|
||
md_number_to_chars (f, insn, insn_length);
|
||
last_insn = insn;
|
||
last_seg = now_seg;
|
||
last_subseg = now_subseg;
|
||
|
||
#ifdef OBJ_ELF
|
||
dwarf2_emit_insn (insn_length);
|
||
#endif
|
||
|
||
/* Create any fixups. */
|
||
for (i = 0; i < fc; i++)
|
||
{
|
||
fixS *fixP;
|
||
if (fixups[i].reloc != BFD_RELOC_NONE)
|
||
{
|
||
reloc_howto_type *reloc_howto;
|
||
int size;
|
||
int offset;
|
||
|
||
reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
|
||
if (!reloc_howto)
|
||
abort ();
|
||
|
||
size = bfd_get_reloc_size (reloc_howto);
|
||
offset = target_big_endian ? (insn_length - size) : 0;
|
||
|
||
fixP = fix_new_exp (frag_now,
|
||
f - frag_now->fr_literal + offset,
|
||
size,
|
||
&fixups[i].exp,
|
||
reloc_howto->pc_relative,
|
||
fixups[i].reloc);
|
||
}
|
||
else
|
||
{
|
||
const struct powerpc_operand *operand;
|
||
|
||
operand = &powerpc_operands[fixups[i].opindex];
|
||
fixP = fix_new_exp (frag_now,
|
||
f - frag_now->fr_literal,
|
||
insn_length,
|
||
&fixups[i].exp,
|
||
(operand->flags & PPC_OPERAND_RELATIVE) != 0,
|
||
BFD_RELOC_NONE);
|
||
}
|
||
fixP->fx_pcrel_adjust = fixups[i].opindex;
|
||
}
|
||
}
|
||
|
||
/* Handle a macro. Gather all the operands, transform them as
|
||
described by the macro, and call md_assemble recursively. All the
|
||
operands are separated by commas; we don't accept parentheses
|
||
around operands here. */
|
||
|
||
static void
|
||
ppc_macro (char *str, const struct powerpc_macro *macro)
|
||
{
|
||
char *operands[10];
|
||
unsigned int count;
|
||
char *s;
|
||
unsigned int len;
|
||
const char *format;
|
||
unsigned int arg;
|
||
char *send;
|
||
char *complete;
|
||
|
||
/* Gather the users operands into the operands array. */
|
||
count = 0;
|
||
s = str;
|
||
while (1)
|
||
{
|
||
if (count >= sizeof operands / sizeof operands[0])
|
||
break;
|
||
operands[count++] = s;
|
||
s = strchr (s, ',');
|
||
if (s == (char *) NULL)
|
||
break;
|
||
*s++ = '\0';
|
||
}
|
||
|
||
if (count != macro->operands)
|
||
{
|
||
as_bad (_("wrong number of operands"));
|
||
return;
|
||
}
|
||
|
||
/* Work out how large the string must be (the size is unbounded
|
||
because it includes user input). */
|
||
len = 0;
|
||
format = macro->format;
|
||
while (*format != '\0')
|
||
{
|
||
if (*format != '%')
|
||
{
|
||
++len;
|
||
++format;
|
||
}
|
||
else
|
||
{
|
||
arg = strtol (format + 1, &send, 10);
|
||
know (send != format && arg < count);
|
||
len += strlen (operands[arg]);
|
||
format = send;
|
||
}
|
||
}
|
||
|
||
/* Put the string together. */
|
||
complete = s = (char *) alloca (len + 1);
|
||
format = macro->format;
|
||
while (*format != '\0')
|
||
{
|
||
if (*format != '%')
|
||
*s++ = *format++;
|
||
else
|
||
{
|
||
arg = strtol (format + 1, &send, 10);
|
||
strcpy (s, operands[arg]);
|
||
s += strlen (s);
|
||
format = send;
|
||
}
|
||
}
|
||
*s = '\0';
|
||
|
||
/* Assemble the constructed instruction. */
|
||
md_assemble (complete);
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
/* For ELF, add support for SHT_ORDERED. */
|
||
|
||
int
|
||
ppc_section_type (char *str, size_t len)
|
||
{
|
||
if (len == 7 && strncmp (str, "ordered", 7) == 0)
|
||
return SHT_ORDERED;
|
||
|
||
return -1;
|
||
}
|
||
|
||
int
|
||
ppc_section_flags (flagword flags, bfd_vma attr ATTRIBUTE_UNUSED, int type)
|
||
{
|
||
if (type == SHT_ORDERED)
|
||
flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
|
||
|
||
return flags;
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
|
||
/* Pseudo-op handling. */
|
||
|
||
/* The .byte pseudo-op. This is similar to the normal .byte
|
||
pseudo-op, but it can also take a single ASCII string. */
|
||
|
||
static void
|
||
ppc_byte (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
int count = 0;
|
||
|
||
if (*input_line_pointer != '\"')
|
||
{
|
||
cons (1);
|
||
return;
|
||
}
|
||
|
||
/* Gather characters. A real double quote is doubled. Unusual
|
||
characters are not permitted. */
|
||
++input_line_pointer;
|
||
while (1)
|
||
{
|
||
char c;
|
||
|
||
c = *input_line_pointer++;
|
||
|
||
if (c == '\"')
|
||
{
|
||
if (*input_line_pointer != '\"')
|
||
break;
|
||
++input_line_pointer;
|
||
}
|
||
|
||
FRAG_APPEND_1_CHAR (c);
|
||
++count;
|
||
}
|
||
|
||
if (warn_476 && count != 0 && (now_seg->flags & SEC_CODE) != 0)
|
||
as_warn (_("data in executable section"));
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* XCOFF specific pseudo-op handling. */
|
||
|
||
/* This is set if we are creating a .stabx symbol, since we don't want
|
||
to handle symbol suffixes for such symbols. */
|
||
static bfd_boolean ppc_stab_symbol;
|
||
|
||
/* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
|
||
symbols in the .bss segment as though they were local common
|
||
symbols, and uses a different smclas. The native Aix 4.3.3 assembler
|
||
aligns .comm and .lcomm to 4 bytes. */
|
||
|
||
static void
|
||
ppc_comm (int lcomm)
|
||
{
|
||
asection *current_seg = now_seg;
|
||
subsegT current_subseg = now_subseg;
|
||
char *name;
|
||
char endc;
|
||
char *end_name;
|
||
offsetT size;
|
||
offsetT align;
|
||
symbolS *lcomm_sym = NULL;
|
||
symbolS *sym;
|
||
char *pfrag;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
end_name = input_line_pointer;
|
||
*end_name = endc;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing size"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
size = get_absolute_expression ();
|
||
if (size < 0)
|
||
{
|
||
as_bad (_("negative size"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (! lcomm)
|
||
{
|
||
/* The third argument to .comm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
align = 2;
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 2;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
char *lcomm_name;
|
||
char lcomm_endc;
|
||
|
||
/* The third argument to .lcomm appears to be the real local
|
||
common symbol to create. References to the symbol named in
|
||
the first argument are turned into references to the third
|
||
argument. */
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing real symbol name"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
lcomm_name = input_line_pointer;
|
||
lcomm_endc = get_symbol_end ();
|
||
|
||
lcomm_sym = symbol_find_or_make (lcomm_name);
|
||
|
||
*input_line_pointer = lcomm_endc;
|
||
|
||
/* The fourth argument to .lcomm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
if (size <= 4)
|
||
align = 2;
|
||
else
|
||
align = 3;
|
||
}
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 2;
|
||
}
|
||
}
|
||
}
|
||
|
||
*end_name = '\0';
|
||
sym = symbol_find_or_make (name);
|
||
*end_name = endc;
|
||
|
||
if (S_IS_DEFINED (sym)
|
||
|| S_GET_VALUE (sym) != 0)
|
||
{
|
||
as_bad (_("attempt to redefine symbol"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
record_alignment (bss_section, align);
|
||
|
||
if (! lcomm
|
||
|| ! S_IS_DEFINED (lcomm_sym))
|
||
{
|
||
symbolS *def_sym;
|
||
offsetT def_size;
|
||
|
||
if (! lcomm)
|
||
{
|
||
def_sym = sym;
|
||
def_size = size;
|
||
S_SET_EXTERNAL (sym);
|
||
}
|
||
else
|
||
{
|
||
symbol_get_tc (lcomm_sym)->output = 1;
|
||
def_sym = lcomm_sym;
|
||
def_size = 0;
|
||
}
|
||
|
||
subseg_set (bss_section, 1);
|
||
frag_align (align, 0, 0);
|
||
|
||
symbol_set_frag (def_sym, frag_now);
|
||
pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
|
||
def_size, (char *) NULL);
|
||
*pfrag = 0;
|
||
S_SET_SEGMENT (def_sym, bss_section);
|
||
symbol_get_tc (def_sym)->align = align;
|
||
}
|
||
else if (lcomm)
|
||
{
|
||
/* Align the size of lcomm_sym. */
|
||
symbol_get_frag (lcomm_sym)->fr_offset =
|
||
((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
|
||
&~ ((1 << align) - 1));
|
||
if (align > symbol_get_tc (lcomm_sym)->align)
|
||
symbol_get_tc (lcomm_sym)->align = align;
|
||
}
|
||
|
||
if (lcomm)
|
||
{
|
||
/* Make sym an offset from lcomm_sym. */
|
||
S_SET_SEGMENT (sym, bss_section);
|
||
symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
|
||
S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
|
||
symbol_get_frag (lcomm_sym)->fr_offset += size;
|
||
}
|
||
|
||
subseg_set (current_seg, current_subseg);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .csect pseudo-op. This switches us into a different
|
||
subsegment. The first argument is a symbol whose value is the
|
||
start of the .csect. In COFF, csect symbols get special aux
|
||
entries defined by the x_csect field of union internal_auxent. The
|
||
optional second argument is the alignment (the default is 2). */
|
||
|
||
static void
|
||
ppc_csect (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
offsetT align;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (S_GET_NAME (sym)[0] == '\0')
|
||
{
|
||
/* An unnamed csect is assumed to be [PR]. */
|
||
symbol_get_tc (sym)->symbol_class = XMC_PR;
|
||
}
|
||
|
||
align = 2;
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
}
|
||
|
||
ppc_change_csect (sym, align);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Change to a different csect. */
|
||
|
||
static void
|
||
ppc_change_csect (symbolS *sym, offsetT align)
|
||
{
|
||
if (S_IS_DEFINED (sym))
|
||
subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
|
||
else
|
||
{
|
||
symbolS **list_ptr;
|
||
int after_toc;
|
||
int hold_chunksize;
|
||
symbolS *list;
|
||
int is_code;
|
||
segT sec;
|
||
|
||
/* This is a new csect. We need to look at the symbol class to
|
||
figure out whether it should go in the text section or the
|
||
data section. */
|
||
after_toc = 0;
|
||
is_code = 0;
|
||
switch (symbol_get_tc (sym)->symbol_class)
|
||
{
|
||
case XMC_PR:
|
||
case XMC_RO:
|
||
case XMC_DB:
|
||
case XMC_GL:
|
||
case XMC_XO:
|
||
case XMC_SV:
|
||
case XMC_TI:
|
||
case XMC_TB:
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_get_tc (sym)->subseg = ppc_text_subsegment;
|
||
++ppc_text_subsegment;
|
||
list_ptr = &ppc_text_csects;
|
||
is_code = 1;
|
||
break;
|
||
case XMC_RW:
|
||
case XMC_TC0:
|
||
case XMC_TC:
|
||
case XMC_DS:
|
||
case XMC_UA:
|
||
case XMC_BS:
|
||
case XMC_UC:
|
||
if (ppc_toc_csect != NULL
|
||
&& (symbol_get_tc (ppc_toc_csect)->subseg + 1
|
||
== ppc_data_subsegment))
|
||
after_toc = 1;
|
||
S_SET_SEGMENT (sym, data_section);
|
||
symbol_get_tc (sym)->subseg = ppc_data_subsegment;
|
||
++ppc_data_subsegment;
|
||
list_ptr = &ppc_data_csects;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
/* We set the obstack chunk size to a small value before
|
||
changing subsegments, so that we don't use a lot of memory
|
||
space for what may be a small section. */
|
||
hold_chunksize = chunksize;
|
||
chunksize = 64;
|
||
|
||
sec = subseg_new (segment_name (S_GET_SEGMENT (sym)),
|
||
symbol_get_tc (sym)->subseg);
|
||
|
||
chunksize = hold_chunksize;
|
||
|
||
if (after_toc)
|
||
ppc_after_toc_frag = frag_now;
|
||
|
||
record_alignment (sec, align);
|
||
if (is_code)
|
||
frag_align_code (align, 0);
|
||
else
|
||
frag_align (align, 0, 0);
|
||
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, (valueT) frag_now_fix ());
|
||
|
||
symbol_get_tc (sym)->align = align;
|
||
symbol_get_tc (sym)->output = 1;
|
||
symbol_get_tc (sym)->within = sym;
|
||
|
||
for (list = *list_ptr;
|
||
symbol_get_tc (list)->next != (symbolS *) NULL;
|
||
list = symbol_get_tc (list)->next)
|
||
;
|
||
symbol_get_tc (list)->next = sym;
|
||
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
|
||
&symbol_lastP);
|
||
}
|
||
|
||
ppc_current_csect = sym;
|
||
}
|
||
|
||
static void
|
||
ppc_change_debug_section (unsigned int idx, subsegT subseg)
|
||
{
|
||
segT sec;
|
||
flagword oldflags;
|
||
const struct xcoff_dwsect_name *dw = &xcoff_dwsect_names[idx];
|
||
|
||
sec = subseg_new (dw->name, subseg);
|
||
oldflags = bfd_get_section_flags (stdoutput, sec);
|
||
if (oldflags == SEC_NO_FLAGS)
|
||
{
|
||
/* Just created section. */
|
||
gas_assert (dw_sections[idx].sect == NULL);
|
||
|
||
bfd_set_section_flags (stdoutput, sec, SEC_DEBUGGING);
|
||
bfd_set_section_alignment (stdoutput, sec, 0);
|
||
dw_sections[idx].sect = sec;
|
||
}
|
||
|
||
/* Not anymore in a csect. */
|
||
ppc_current_csect = NULL;
|
||
}
|
||
|
||
/* The .dwsect pseudo-op. Defines a DWARF section. Syntax is:
|
||
.dwsect flag [, opt-label ]
|
||
*/
|
||
|
||
static void
|
||
ppc_dwsect (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
offsetT flag;
|
||
symbolS *opt_label;
|
||
const struct xcoff_dwsect_name *dw;
|
||
struct dw_subsection *subseg;
|
||
struct dw_section *dws;
|
||
int i;
|
||
|
||
/* Find section. */
|
||
flag = get_absolute_expression ();
|
||
dw = NULL;
|
||
for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
|
||
if (xcoff_dwsect_names[i].flag == flag)
|
||
{
|
||
dw = &xcoff_dwsect_names[i];
|
||
break;
|
||
}
|
||
|
||
/* Parse opt-label. */
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
const char *label;
|
||
char c;
|
||
|
||
++input_line_pointer;
|
||
|
||
label = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
opt_label = symbol_find_or_make (label);
|
||
*input_line_pointer = c;
|
||
}
|
||
else
|
||
opt_label = NULL;
|
||
|
||
demand_empty_rest_of_line ();
|
||
|
||
/* Return now in case of unknown subsection. */
|
||
if (dw == NULL)
|
||
{
|
||
as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"),
|
||
(unsigned)flag);
|
||
return;
|
||
}
|
||
|
||
/* Find the subsection. */
|
||
dws = &dw_sections[i];
|
||
subseg = NULL;
|
||
if (opt_label != NULL && S_IS_DEFINED (opt_label))
|
||
{
|
||
/* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */
|
||
if (dws->sect == NULL || S_GET_SEGMENT (opt_label) != dws->sect)
|
||
{
|
||
as_bad (_("label %s was not defined in this dwarf section"),
|
||
S_GET_NAME (opt_label));
|
||
subseg = dws->anon_subseg;
|
||
opt_label = NULL;
|
||
}
|
||
else
|
||
subseg = symbol_get_tc (opt_label)->u.dw;
|
||
}
|
||
|
||
if (subseg != NULL)
|
||
{
|
||
/* Switch to the subsection. */
|
||
ppc_change_debug_section (i, subseg->subseg);
|
||
}
|
||
else
|
||
{
|
||
/* Create a new dw subsection. */
|
||
subseg = (struct dw_subsection *)
|
||
xmalloc (sizeof (struct dw_subsection));
|
||
|
||
if (opt_label == NULL)
|
||
{
|
||
/* The anonymous one. */
|
||
subseg->subseg = 0;
|
||
subseg->link = NULL;
|
||
dws->anon_subseg = subseg;
|
||
}
|
||
else
|
||
{
|
||
/* A named one. */
|
||
if (dws->list_subseg != NULL)
|
||
subseg->subseg = dws->list_subseg->subseg + 1;
|
||
else
|
||
subseg->subseg = 1;
|
||
|
||
subseg->link = dws->list_subseg;
|
||
dws->list_subseg = subseg;
|
||
symbol_get_tc (opt_label)->u.dw = subseg;
|
||
}
|
||
|
||
ppc_change_debug_section (i, subseg->subseg);
|
||
|
||
if (dw->def_size)
|
||
{
|
||
/* Add the length field. */
|
||
expressionS *exp = &subseg->end_exp;
|
||
int sz;
|
||
|
||
if (opt_label != NULL)
|
||
symbol_set_value_now (opt_label);
|
||
|
||
/* Add the length field. Note that according to the AIX assembler
|
||
manual, the size of the length field is 4 for powerpc32 but
|
||
12 for powerpc64. */
|
||
if (ppc_obj64)
|
||
{
|
||
/* Write the 64bit marker. */
|
||
md_number_to_chars (frag_more (4), -1, 4);
|
||
}
|
||
|
||
exp->X_op = O_subtract;
|
||
exp->X_op_symbol = symbol_temp_new_now ();
|
||
exp->X_add_symbol = symbol_temp_make ();
|
||
|
||
sz = ppc_obj64 ? 8 : 4;
|
||
exp->X_add_number = -sz;
|
||
emit_expr (exp, sz);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This function handles the .text and .data pseudo-ops. These
|
||
pseudo-ops aren't really used by XCOFF; we implement them for the
|
||
convenience of people who aren't used to XCOFF. */
|
||
|
||
static void
|
||
ppc_section (int type)
|
||
{
|
||
const char *name;
|
||
symbolS *sym;
|
||
|
||
if (type == 't')
|
||
name = ".text[PR]";
|
||
else if (type == 'd')
|
||
name = ".data[RW]";
|
||
else
|
||
abort ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
ppc_change_csect (sym, 2);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* This function handles the .section pseudo-op. This is mostly to
|
||
give an error, since XCOFF only supports .text, .data and .bss, but
|
||
we do permit the user to name the text or data section. */
|
||
|
||
static void
|
||
ppc_named_section (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *user_name;
|
||
const char *real_name;
|
||
char c;
|
||
symbolS *sym;
|
||
|
||
user_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
if (strcmp (user_name, ".text") == 0)
|
||
real_name = ".text[PR]";
|
||
else if (strcmp (user_name, ".data") == 0)
|
||
real_name = ".data[RW]";
|
||
else
|
||
{
|
||
as_bad (_("the XCOFF file format does not support arbitrary sections"));
|
||
*input_line_pointer = c;
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
*input_line_pointer = c;
|
||
|
||
sym = symbol_find_or_make (real_name);
|
||
|
||
ppc_change_csect (sym, 2);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .extern pseudo-op. We create an undefined symbol. */
|
||
|
||
static void
|
||
ppc_extern (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
(void) symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
|
||
|
||
static void
|
||
ppc_lglobl (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
|
||
relocations at the beginning of the current csect.
|
||
|
||
(In principle, there's no reason why the relocations _have_ to be at
|
||
the beginning. Anywhere in the csect would do. However, inserting
|
||
at the beginning is what the native assmebler does, and it helps to
|
||
deal with cases where the .ref statements follow the section contents.)
|
||
|
||
??? .refs don't work for empty .csects. However, the native assembler
|
||
doesn't report an error in this case, and neither yet do we. */
|
||
|
||
static void
|
||
ppc_ref (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char c;
|
||
|
||
if (ppc_current_csect == NULL)
|
||
{
|
||
as_bad (_(".ref outside .csect"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
do
|
||
{
|
||
name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
fix_at_start (symbol_get_frag (ppc_current_csect), 0,
|
||
symbol_find_or_make (name), 0, FALSE, BFD_RELOC_NONE);
|
||
|
||
*input_line_pointer = c;
|
||
SKIP_WHITESPACE ();
|
||
c = *input_line_pointer;
|
||
if (c == ',')
|
||
{
|
||
input_line_pointer++;
|
||
SKIP_WHITESPACE ();
|
||
if (is_end_of_line[(unsigned char) *input_line_pointer])
|
||
{
|
||
as_bad (_("missing symbol name"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
while (c == ',');
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
|
||
although I don't know why it bothers. */
|
||
|
||
static void
|
||
ppc_rename (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
int len;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing rename string"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .stabx pseudo-op. This is similar to a normal .stabs
|
||
pseudo-op, but slightly different. A sample is
|
||
.stabx "main:F-1",.main,142,0
|
||
The first argument is the symbol name to create. The second is the
|
||
value, and the third is the storage class. The fourth seems to be
|
||
always zero, and I am assuming it is the type. */
|
||
|
||
static void
|
||
ppc_stabx (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
int len;
|
||
symbolS *sym;
|
||
expressionS exp;
|
||
|
||
name = demand_copy_C_string (&len);
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing value"));
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
ppc_stab_symbol = TRUE;
|
||
sym = symbol_make (name);
|
||
ppc_stab_symbol = FALSE;
|
||
|
||
symbol_get_tc (sym)->real_name = name;
|
||
|
||
(void) expression (&exp);
|
||
|
||
switch (exp.X_op)
|
||
{
|
||
case O_illegal:
|
||
case O_absent:
|
||
case O_big:
|
||
as_bad (_("illegal .stabx expression; zero assumed"));
|
||
exp.X_add_number = 0;
|
||
/* Fall through. */
|
||
case O_constant:
|
||
S_SET_VALUE (sym, (valueT) exp.X_add_number);
|
||
symbol_set_frag (sym, &zero_address_frag);
|
||
break;
|
||
|
||
case O_symbol:
|
||
if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
|
||
symbol_set_value_expression (sym, &exp);
|
||
else
|
||
{
|
||
S_SET_VALUE (sym,
|
||
exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
|
||
symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
|
||
}
|
||
break;
|
||
|
||
default:
|
||
/* The value is some complex expression. This will probably
|
||
fail at some later point, but this is probably the right
|
||
thing to do here. */
|
||
symbol_set_value_expression (sym, &exp);
|
||
break;
|
||
}
|
||
|
||
S_SET_SEGMENT (sym, ppc_coff_debug_section);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing class"));
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing type"));
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
S_SET_DATA_TYPE (sym, get_absolute_expression ());
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
|
||
{
|
||
/* In this case :
|
||
|
||
.bs name
|
||
.stabx "z",arrays_,133,0
|
||
.es
|
||
|
||
.comm arrays_,13768,3
|
||
|
||
resolve_symbol_value will copy the exp's "within" into sym's when the
|
||
offset is 0. Since this seems to be corner case problem,
|
||
only do the correction for storage class C_STSYM. A better solution
|
||
would be to have the tc field updated in ppc_symbol_new_hook. */
|
||
|
||
if (exp.X_op == O_symbol)
|
||
{
|
||
if (ppc_current_block == NULL)
|
||
as_bad (_(".stabx of storage class stsym must be within .bs/.es"));
|
||
|
||
symbol_get_tc (sym)->within = ppc_current_block;
|
||
symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
|
||
}
|
||
}
|
||
|
||
if (exp.X_op != O_symbol
|
||
|| ! S_IS_EXTERNAL (exp.X_add_symbol)
|
||
|| S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
|
||
ppc_frob_label (sym);
|
||
else
|
||
{
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
|
||
if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
|
||
symbol_get_tc (ppc_current_csect)->within = sym;
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .function pseudo-op. This takes several arguments. The first
|
||
argument seems to be the external name of the symbol. The second
|
||
argument seems to be the label for the start of the function. gcc
|
||
uses the same name for both. I have no idea what the third and
|
||
fourth arguments are meant to be. The optional fifth argument is
|
||
an expression for the size of the function. In COFF this symbol
|
||
gets an aux entry like that used for a csect. */
|
||
|
||
static void
|
||
ppc_function (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
char *s;
|
||
symbolS *ext_sym;
|
||
symbolS *lab_sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
/* Ignore any [PR] suffix. */
|
||
name = ppc_canonicalize_symbol_name (name);
|
||
s = strchr (name, '[');
|
||
if (s != (char *) NULL
|
||
&& strcmp (s + 1, "PR]") == 0)
|
||
*s = '\0';
|
||
|
||
ext_sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing symbol name"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
++input_line_pointer;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
lab_sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (ext_sym != lab_sym)
|
||
{
|
||
expressionS exp;
|
||
|
||
exp.X_op = O_symbol;
|
||
exp.X_add_symbol = lab_sym;
|
||
exp.X_op_symbol = NULL;
|
||
exp.X_add_number = 0;
|
||
exp.X_unsigned = 0;
|
||
symbol_set_value_expression (ext_sym, &exp);
|
||
}
|
||
|
||
if (symbol_get_tc (ext_sym)->symbol_class == -1)
|
||
symbol_get_tc (ext_sym)->symbol_class = XMC_PR;
|
||
symbol_get_tc (ext_sym)->output = 1;
|
||
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
expressionS exp;
|
||
|
||
/* Ignore the third argument. */
|
||
++input_line_pointer;
|
||
expression (& exp);
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
/* Ignore the fourth argument. */
|
||
++input_line_pointer;
|
||
expression (& exp);
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
/* The fifth argument is the function size. */
|
||
++input_line_pointer;
|
||
symbol_get_tc (ext_sym)->u.size = symbol_new
|
||
("L0\001", absolute_section,(valueT) 0, &zero_address_frag);
|
||
pseudo_set (symbol_get_tc (ext_sym)->u.size);
|
||
}
|
||
}
|
||
}
|
||
|
||
S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
|
||
SF_SET_FUNCTION (ext_sym);
|
||
SF_SET_PROCESS (ext_sym);
|
||
coff_add_linesym (ext_sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
|
||
".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
|
||
with the correct line number */
|
||
|
||
static symbolS *saved_bi_sym = 0;
|
||
|
||
static void
|
||
ppc_bf (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".bf");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_FCN);
|
||
|
||
coff_line_base = get_absolute_expression ();
|
||
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, coff_line_base);
|
||
|
||
/* Line number for bi. */
|
||
if (saved_bi_sym)
|
||
{
|
||
S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
|
||
saved_bi_sym = 0;
|
||
}
|
||
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
|
||
".ef", except that the line number is absolute, not relative to the
|
||
most recent ".bf" symbol. */
|
||
|
||
static void
|
||
ppc_ef (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".ef");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_FCN);
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, get_absolute_expression ());
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bi and .ei pseudo-ops. These take a string argument and
|
||
generates a C_BINCL or C_EINCL symbol, which goes at the start of
|
||
the symbol list. The value of .bi will be know when the next .bf
|
||
is encountered. */
|
||
|
||
static void
|
||
ppc_biei (int ei)
|
||
{
|
||
static symbolS *last_biei;
|
||
|
||
char *name;
|
||
int len;
|
||
symbolS *sym;
|
||
symbolS *look;
|
||
|
||
name = demand_copy_C_string (&len);
|
||
|
||
/* The value of these symbols is actually file offset. Here we set
|
||
the value to the index into the line number entries. In
|
||
ppc_frob_symbols we set the fix_line field, which will cause BFD
|
||
to do the right thing. */
|
||
|
||
sym = symbol_make (name);
|
||
/* obj-coff.c currently only handles line numbers correctly in the
|
||
.text section. */
|
||
S_SET_SEGMENT (sym, text_section);
|
||
S_SET_VALUE (sym, coff_n_line_nos);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
|
||
S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
/* Save bi. */
|
||
if (ei)
|
||
saved_bi_sym = 0;
|
||
else
|
||
saved_bi_sym = sym;
|
||
|
||
for (look = last_biei ? last_biei : symbol_rootP;
|
||
(look != (symbolS *) NULL
|
||
&& (S_GET_STORAGE_CLASS (look) == C_FILE
|
||
|| S_GET_STORAGE_CLASS (look) == C_BINCL
|
||
|| S_GET_STORAGE_CLASS (look) == C_EINCL));
|
||
look = symbol_next (look))
|
||
;
|
||
if (look != (symbolS *) NULL)
|
||
{
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
|
||
last_biei = sym;
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
|
||
There is one argument, which is a csect symbol. The value of the
|
||
.bs symbol is the index of this csect symbol. */
|
||
|
||
static void
|
||
ppc_bs (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *csect;
|
||
symbolS *sym;
|
||
|
||
if (ppc_current_block != NULL)
|
||
as_bad (_("nested .bs blocks"));
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
csect = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
sym = symbol_make (".bs");
|
||
S_SET_SEGMENT (sym, now_seg);
|
||
S_SET_STORAGE_CLASS (sym, C_BSTAT);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
symbol_get_tc (sym)->within = csect;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
ppc_current_block = sym;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
|
||
|
||
static void
|
||
ppc_es (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
symbolS *sym;
|
||
|
||
if (ppc_current_block == NULL)
|
||
as_bad (_(".es without preceding .bs"));
|
||
|
||
sym = symbol_make (".es");
|
||
S_SET_SEGMENT (sym, now_seg);
|
||
S_SET_STORAGE_CLASS (sym, C_ESTAT);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
ppc_current_block = NULL;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
|
||
line number. */
|
||
|
||
static void
|
||
ppc_bb (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".bb");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_BLOCK);
|
||
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, get_absolute_expression ());
|
||
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
SF_SET_PROCESS (sym);
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
|
||
line number. */
|
||
|
||
static void
|
||
ppc_eb (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".eb");
|
||
S_SET_SEGMENT (sym, text_section);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, frag_now_fix ());
|
||
S_SET_STORAGE_CLASS (sym, C_BLOCK);
|
||
S_SET_NUMBER_AUXILIARY (sym, 1);
|
||
SA_SET_SYM_LNNO (sym, get_absolute_expression ());
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
SF_SET_PROCESS (sym);
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
|
||
specified name. */
|
||
|
||
static void
|
||
ppc_bc (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
int len;
|
||
symbolS *sym;
|
||
|
||
name = demand_copy_C_string (&len);
|
||
sym = symbol_make (name);
|
||
S_SET_SEGMENT (sym, ppc_coff_debug_section);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
S_SET_STORAGE_CLASS (sym, C_BCOMM);
|
||
S_SET_VALUE (sym, 0);
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
|
||
|
||
static void
|
||
ppc_ec (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
symbolS *sym;
|
||
|
||
sym = symbol_make (".ec");
|
||
S_SET_SEGMENT (sym, ppc_coff_debug_section);
|
||
symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
|
||
S_SET_STORAGE_CLASS (sym, C_ECOMM);
|
||
S_SET_VALUE (sym, 0);
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The .toc pseudo-op. Switch to the .toc subsegment. */
|
||
|
||
static void
|
||
ppc_toc (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (ppc_toc_csect != (symbolS *) NULL)
|
||
subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
|
||
else
|
||
{
|
||
subsegT subseg;
|
||
symbolS *sym;
|
||
symbolS *list;
|
||
|
||
subseg = ppc_data_subsegment;
|
||
++ppc_data_subsegment;
|
||
|
||
subseg_new (segment_name (data_section), subseg);
|
||
ppc_toc_frag = frag_now;
|
||
|
||
sym = symbol_find_or_make ("TOC[TC0]");
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_SEGMENT (sym, data_section);
|
||
S_SET_VALUE (sym, (valueT) frag_now_fix ());
|
||
symbol_get_tc (sym)->subseg = subseg;
|
||
symbol_get_tc (sym)->output = 1;
|
||
symbol_get_tc (sym)->within = sym;
|
||
|
||
ppc_toc_csect = sym;
|
||
|
||
for (list = ppc_data_csects;
|
||
symbol_get_tc (list)->next != (symbolS *) NULL;
|
||
list = symbol_get_tc (list)->next)
|
||
;
|
||
symbol_get_tc (list)->next = sym;
|
||
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
|
||
&symbol_lastP);
|
||
}
|
||
|
||
ppc_current_csect = ppc_toc_csect;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* The AIX assembler automatically aligns the operands of a .long or
|
||
.short pseudo-op, and we want to be compatible. */
|
||
|
||
static void
|
||
ppc_xcoff_cons (int log_size)
|
||
{
|
||
frag_align (log_size, 0, 0);
|
||
record_alignment (now_seg, log_size);
|
||
cons (1 << log_size);
|
||
}
|
||
|
||
static void
|
||
ppc_vbyte (int dummy ATTRIBUTE_UNUSED)
|
||
{
|
||
expressionS exp;
|
||
int byte_count;
|
||
|
||
(void) expression (&exp);
|
||
|
||
if (exp.X_op != O_constant)
|
||
{
|
||
as_bad (_("non-constant byte count"));
|
||
return;
|
||
}
|
||
|
||
byte_count = exp.X_add_number;
|
||
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("missing value"));
|
||
return;
|
||
}
|
||
|
||
++input_line_pointer;
|
||
cons (byte_count);
|
||
}
|
||
|
||
void
|
||
ppc_xcoff_end (void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++)
|
||
{
|
||
struct dw_section *dws = &dw_sections[i];
|
||
struct dw_subsection *dwss;
|
||
|
||
if (dws->anon_subseg)
|
||
{
|
||
dwss = dws->anon_subseg;
|
||
dwss->link = dws->list_subseg;
|
||
}
|
||
else
|
||
dwss = dws->list_subseg;
|
||
|
||
for (; dwss != NULL; dwss = dwss->link)
|
||
if (dwss->end_exp.X_add_symbol != NULL)
|
||
{
|
||
subseg_set (dws->sect, dwss->subseg);
|
||
symbol_set_value_now (dwss->end_exp.X_add_symbol);
|
||
}
|
||
}
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
|
||
|
||
/* The .tc pseudo-op. This is used when generating either XCOFF or
|
||
ELF. This takes two or more arguments.
|
||
|
||
When generating XCOFF output, the first argument is the name to
|
||
give to this location in the toc; this will be a symbol with class
|
||
TC. The rest of the arguments are N-byte values to actually put at
|
||
this location in the TOC; often there is just one more argument, a
|
||
relocatable symbol reference. The size of the value to store
|
||
depends on target word size. A 32-bit target uses 4-byte values, a
|
||
64-bit target uses 8-byte values.
|
||
|
||
When not generating XCOFF output, the arguments are the same, but
|
||
the first argument is simply ignored. */
|
||
|
||
static void
|
||
ppc_tc (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* Define the TOC symbol name. */
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *sym;
|
||
|
||
if (ppc_toc_csect == (symbolS *) NULL
|
||
|| ppc_toc_csect != ppc_current_csect)
|
||
{
|
||
as_bad (_(".tc not in .toc section"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
if (S_IS_DEFINED (sym))
|
||
{
|
||
symbolS *label;
|
||
|
||
label = symbol_get_tc (ppc_current_csect)->within;
|
||
if (symbol_get_tc (label)->symbol_class != XMC_TC0)
|
||
{
|
||
as_bad (_(".tc with no label"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
|
||
symbol_set_frag (label, symbol_get_frag (sym));
|
||
S_SET_VALUE (label, S_GET_VALUE (sym));
|
||
|
||
while (! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
++input_line_pointer;
|
||
|
||
return;
|
||
}
|
||
|
||
S_SET_SEGMENT (sym, now_seg);
|
||
symbol_set_frag (sym, frag_now);
|
||
S_SET_VALUE (sym, (valueT) frag_now_fix ());
|
||
symbol_get_tc (sym)->symbol_class = XMC_TC;
|
||
symbol_get_tc (sym)->output = 1;
|
||
|
||
ppc_frob_label (sym);
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
#ifdef OBJ_ELF
|
||
int align;
|
||
|
||
/* Skip the TOC symbol name. */
|
||
while (is_part_of_name (*input_line_pointer)
|
||
|| *input_line_pointer == ' '
|
||
|| *input_line_pointer == '['
|
||
|| *input_line_pointer == ']'
|
||
|| *input_line_pointer == '{'
|
||
|| *input_line_pointer == '}')
|
||
++input_line_pointer;
|
||
|
||
/* Align to a four/eight byte boundary. */
|
||
align = ppc_obj64 ? 3 : 2;
|
||
frag_align (align, 0, 0);
|
||
record_alignment (now_seg, align);
|
||
#endif /* OBJ_ELF */
|
||
|
||
if (*input_line_pointer != ',')
|
||
demand_empty_rest_of_line ();
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
cons (ppc_obj64 ? 8 : 4);
|
||
}
|
||
}
|
||
|
||
/* Pseudo-op .machine. */
|
||
|
||
static void
|
||
ppc_machine (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *cpu_string;
|
||
#define MAX_HISTORY 100
|
||
static ppc_cpu_t *cpu_history;
|
||
static int curr_hist;
|
||
|
||
SKIP_WHITESPACE ();
|
||
|
||
if (*input_line_pointer == '"')
|
||
{
|
||
int len;
|
||
cpu_string = demand_copy_C_string (&len);
|
||
}
|
||
else
|
||
{
|
||
char c;
|
||
cpu_string = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
cpu_string = xstrdup (cpu_string);
|
||
*input_line_pointer = c;
|
||
}
|
||
|
||
if (cpu_string != NULL)
|
||
{
|
||
ppc_cpu_t old_cpu = ppc_cpu;
|
||
ppc_cpu_t new_cpu;
|
||
char *p;
|
||
|
||
for (p = cpu_string; *p != 0; p++)
|
||
*p = TOLOWER (*p);
|
||
|
||
if (strcmp (cpu_string, "push") == 0)
|
||
{
|
||
if (cpu_history == NULL)
|
||
cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
|
||
|
||
if (curr_hist >= MAX_HISTORY)
|
||
as_bad (_(".machine stack overflow"));
|
||
else
|
||
cpu_history[curr_hist++] = ppc_cpu;
|
||
}
|
||
else if (strcmp (cpu_string, "pop") == 0)
|
||
{
|
||
if (curr_hist <= 0)
|
||
as_bad (_(".machine stack underflow"));
|
||
else
|
||
ppc_cpu = cpu_history[--curr_hist];
|
||
}
|
||
else if ((new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, cpu_string)) != 0)
|
||
ppc_cpu = new_cpu;
|
||
else
|
||
as_bad (_("invalid machine `%s'"), cpu_string);
|
||
|
||
if (ppc_cpu != old_cpu)
|
||
ppc_setup_opcodes ();
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
#endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
|
||
|
||
#ifdef TE_PE
|
||
|
||
/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
|
||
|
||
/* Set the current section. */
|
||
static void
|
||
ppc_set_current_section (segT new)
|
||
{
|
||
ppc_previous_section = ppc_current_section;
|
||
ppc_current_section = new;
|
||
}
|
||
|
||
/* pseudo-op: .previous
|
||
behaviour: toggles the current section with the previous section.
|
||
errors: None
|
||
warnings: "No previous section" */
|
||
|
||
static void
|
||
ppc_previous (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (ppc_previous_section == NULL)
|
||
{
|
||
as_warn (_("no previous section to return to, ignored."));
|
||
return;
|
||
}
|
||
|
||
subseg_set (ppc_previous_section, 0);
|
||
|
||
ppc_set_current_section (ppc_previous_section);
|
||
}
|
||
|
||
/* pseudo-op: .pdata
|
||
behaviour: predefined read only data section
|
||
double word aligned
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .pdata "adr3"
|
||
a - don't know -- maybe a misprint
|
||
d - initialized data
|
||
r - readable
|
||
3 - double word aligned (that would be 4 byte boundary)
|
||
|
||
commentary:
|
||
Tag index tables (also known as the function table) for exception
|
||
handling, debugging, etc. */
|
||
|
||
static void
|
||
ppc_pdata (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (pdata_section == 0)
|
||
{
|
||
pdata_section = subseg_new (".pdata", 0);
|
||
|
||
bfd_set_section_flags (stdoutput, pdata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, pdata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
pdata_section = subseg_new (".pdata", 0);
|
||
}
|
||
ppc_set_current_section (pdata_section);
|
||
}
|
||
|
||
/* pseudo-op: .ydata
|
||
behaviour: predefined read only data section
|
||
double word aligned
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .ydata "drw3"
|
||
a - don't know -- maybe a misprint
|
||
d - initialized data
|
||
r - readable
|
||
3 - double word aligned (that would be 4 byte boundary)
|
||
commentary:
|
||
Tag tables (also known as the scope table) for exception handling,
|
||
debugging, etc. */
|
||
|
||
static void
|
||
ppc_ydata (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (ydata_section == 0)
|
||
{
|
||
ydata_section = subseg_new (".ydata", 0);
|
||
bfd_set_section_flags (stdoutput, ydata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, ydata_section, 3);
|
||
}
|
||
else
|
||
{
|
||
ydata_section = subseg_new (".ydata", 0);
|
||
}
|
||
ppc_set_current_section (ydata_section);
|
||
}
|
||
|
||
/* pseudo-op: .reldata
|
||
behaviour: predefined read write data section
|
||
double word aligned (4-byte)
|
||
FIXME: relocation is applied to it
|
||
FIXME: what's the difference between this and .data?
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .reldata "drw3"
|
||
d - initialized data
|
||
r - readable
|
||
w - writeable
|
||
3 - double word aligned (that would be 8 byte boundary)
|
||
|
||
commentary:
|
||
Like .data, but intended to hold data subject to relocation, such as
|
||
function descriptors, etc. */
|
||
|
||
static void
|
||
ppc_reldata (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (reldata_section == 0)
|
||
{
|
||
reldata_section = subseg_new (".reldata", 0);
|
||
|
||
bfd_set_section_flags (stdoutput, reldata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_DATA));
|
||
|
||
bfd_set_section_alignment (stdoutput, reldata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
reldata_section = subseg_new (".reldata", 0);
|
||
}
|
||
ppc_set_current_section (reldata_section);
|
||
}
|
||
|
||
/* pseudo-op: .rdata
|
||
behaviour: predefined read only data section
|
||
double word aligned
|
||
errors: None
|
||
warnings: None
|
||
initial: .section .rdata "dr3"
|
||
d - initialized data
|
||
r - readable
|
||
3 - double word aligned (that would be 4 byte boundary) */
|
||
|
||
static void
|
||
ppc_rdata (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (rdata_section == 0)
|
||
{
|
||
rdata_section = subseg_new (".rdata", 0);
|
||
bfd_set_section_flags (stdoutput, rdata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA ));
|
||
|
||
bfd_set_section_alignment (stdoutput, rdata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
rdata_section = subseg_new (".rdata", 0);
|
||
}
|
||
ppc_set_current_section (rdata_section);
|
||
}
|
||
|
||
/* pseudo-op: .ualong
|
||
behaviour: much like .int, with the exception that no alignment is
|
||
performed.
|
||
FIXME: test the alignment statement
|
||
errors: None
|
||
warnings: None */
|
||
|
||
static void
|
||
ppc_ualong (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
/* Try for long. */
|
||
cons (4);
|
||
}
|
||
|
||
/* pseudo-op: .znop <symbol name>
|
||
behaviour: Issue a nop instruction
|
||
Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
|
||
the supplied symbol name.
|
||
errors: None
|
||
warnings: Missing symbol name */
|
||
|
||
static void
|
||
ppc_znop (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
unsigned long insn;
|
||
const struct powerpc_opcode *opcode;
|
||
char *f;
|
||
symbolS *sym;
|
||
char *symbol_name;
|
||
char c;
|
||
char *name;
|
||
|
||
/* Strip out the symbol name. */
|
||
symbol_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
name = xmalloc (input_line_pointer - symbol_name + 1);
|
||
strcpy (name, symbol_name);
|
||
|
||
sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = c;
|
||
|
||
SKIP_WHITESPACE ();
|
||
|
||
/* Look up the opcode in the hash table. */
|
||
opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
|
||
|
||
/* Stick in the nop. */
|
||
insn = opcode->opcode;
|
||
|
||
/* Write out the instruction. */
|
||
f = frag_more (4);
|
||
md_number_to_chars (f, insn, 4);
|
||
fix_new (frag_now,
|
||
f - frag_now->fr_literal,
|
||
4,
|
||
sym,
|
||
0,
|
||
0,
|
||
BFD_RELOC_16_GOT_PCREL);
|
||
|
||
}
|
||
|
||
/* pseudo-op:
|
||
behaviour:
|
||
errors:
|
||
warnings: */
|
||
|
||
static void
|
||
ppc_pe_comm (int lcomm)
|
||
{
|
||
char *name;
|
||
char c;
|
||
char *p;
|
||
offsetT temp;
|
||
symbolS *symbolP;
|
||
offsetT align;
|
||
|
||
name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
/* just after name is now '\0'. */
|
||
p = input_line_pointer;
|
||
*p = c;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != ',')
|
||
{
|
||
as_bad (_("expected comma after symbol-name: rest of line ignored."));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
input_line_pointer++; /* skip ',' */
|
||
if ((temp = get_absolute_expression ()) < 0)
|
||
{
|
||
as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (! lcomm)
|
||
{
|
||
/* The third argument to .comm is the alignment. */
|
||
if (*input_line_pointer != ',')
|
||
align = 3;
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
align = get_absolute_expression ();
|
||
if (align <= 0)
|
||
{
|
||
as_warn (_("ignoring bad alignment"));
|
||
align = 3;
|
||
}
|
||
}
|
||
}
|
||
|
||
*p = 0;
|
||
symbolP = symbol_find_or_make (name);
|
||
|
||
*p = c;
|
||
if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
|
||
{
|
||
as_bad (_("ignoring attempt to re-define symbol `%s'."),
|
||
S_GET_NAME (symbolP));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
if (S_GET_VALUE (symbolP))
|
||
{
|
||
if (S_GET_VALUE (symbolP) != (valueT) temp)
|
||
as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."),
|
||
S_GET_NAME (symbolP),
|
||
(long) S_GET_VALUE (symbolP),
|
||
(long) temp);
|
||
}
|
||
else
|
||
{
|
||
S_SET_VALUE (symbolP, (valueT) temp);
|
||
S_SET_EXTERNAL (symbolP);
|
||
S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/*
|
||
* implement the .section pseudo op:
|
||
* .section name {, "flags"}
|
||
* ^ ^
|
||
* | +--- optional flags: 'b' for bss
|
||
* | 'i' for info
|
||
* +-- section name 'l' for lib
|
||
* 'n' for noload
|
||
* 'o' for over
|
||
* 'w' for data
|
||
* 'd' (apparently m88k for data)
|
||
* 'x' for text
|
||
* But if the argument is not a quoted string, treat it as a
|
||
* subsegment number.
|
||
*
|
||
* FIXME: this is a copy of the section processing from obj-coff.c, with
|
||
* additions/changes for the moto-pas assembler support. There are three
|
||
* categories:
|
||
*
|
||
* FIXME: I just noticed this. This doesn't work at all really. It it
|
||
* setting bits that bfd probably neither understands or uses. The
|
||
* correct approach (?) will have to incorporate extra fields attached
|
||
* to the section to hold the system specific stuff. (krk)
|
||
*
|
||
* Section Contents:
|
||
* 'a' - unknown - referred to in documentation, but no definition supplied
|
||
* 'c' - section has code
|
||
* 'd' - section has initialized data
|
||
* 'u' - section has uninitialized data
|
||
* 'i' - section contains directives (info)
|
||
* 'n' - section can be discarded
|
||
* 'R' - remove section at link time
|
||
*
|
||
* Section Protection:
|
||
* 'r' - section is readable
|
||
* 'w' - section is writeable
|
||
* 'x' - section is executable
|
||
* 's' - section is sharable
|
||
*
|
||
* Section Alignment:
|
||
* '0' - align to byte boundary
|
||
* '1' - align to halfword undary
|
||
* '2' - align to word boundary
|
||
* '3' - align to doubleword boundary
|
||
* '4' - align to quadword boundary
|
||
* '5' - align to 32 byte boundary
|
||
* '6' - align to 64 byte boundary
|
||
*
|
||
*/
|
||
|
||
void
|
||
ppc_pe_section (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
/* Strip out the section name. */
|
||
char *section_name;
|
||
char c;
|
||
char *name;
|
||
unsigned int exp;
|
||
flagword flags;
|
||
segT sec;
|
||
int align;
|
||
|
||
section_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
name = xmalloc (input_line_pointer - section_name + 1);
|
||
strcpy (name, section_name);
|
||
|
||
*input_line_pointer = c;
|
||
|
||
SKIP_WHITESPACE ();
|
||
|
||
exp = 0;
|
||
flags = SEC_NO_FLAGS;
|
||
|
||
if (strcmp (name, ".idata$2") == 0)
|
||
{
|
||
align = 0;
|
||
}
|
||
else if (strcmp (name, ".idata$3") == 0)
|
||
{
|
||
align = 0;
|
||
}
|
||
else if (strcmp (name, ".idata$4") == 0)
|
||
{
|
||
align = 2;
|
||
}
|
||
else if (strcmp (name, ".idata$5") == 0)
|
||
{
|
||
align = 2;
|
||
}
|
||
else if (strcmp (name, ".idata$6") == 0)
|
||
{
|
||
align = 1;
|
||
}
|
||
else
|
||
/* Default alignment to 16 byte boundary. */
|
||
align = 4;
|
||
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
++input_line_pointer;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != '"')
|
||
exp = get_absolute_expression ();
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
while (*input_line_pointer != '"'
|
||
&& ! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
{
|
||
switch (*input_line_pointer)
|
||
{
|
||
/* Section Contents */
|
||
case 'a': /* unknown */
|
||
as_bad (_("unsupported section attribute -- 'a'"));
|
||
break;
|
||
case 'c': /* code section */
|
||
flags |= SEC_CODE;
|
||
break;
|
||
case 'd': /* section has initialized data */
|
||
flags |= SEC_DATA;
|
||
break;
|
||
case 'u': /* section has uninitialized data */
|
||
/* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
|
||
in winnt.h */
|
||
flags |= SEC_ROM;
|
||
break;
|
||
case 'i': /* section contains directives (info) */
|
||
/* FIXME: This is IMAGE_SCN_LNK_INFO
|
||
in winnt.h */
|
||
flags |= SEC_HAS_CONTENTS;
|
||
break;
|
||
case 'n': /* section can be discarded */
|
||
flags &=~ SEC_LOAD;
|
||
break;
|
||
case 'R': /* Remove section at link time */
|
||
flags |= SEC_NEVER_LOAD;
|
||
break;
|
||
#if IFLICT_BRAIN_DAMAGE
|
||
/* Section Protection */
|
||
case 'r': /* section is readable */
|
||
flags |= IMAGE_SCN_MEM_READ;
|
||
break;
|
||
case 'w': /* section is writeable */
|
||
flags |= IMAGE_SCN_MEM_WRITE;
|
||
break;
|
||
case 'x': /* section is executable */
|
||
flags |= IMAGE_SCN_MEM_EXECUTE;
|
||
break;
|
||
case 's': /* section is sharable */
|
||
flags |= IMAGE_SCN_MEM_SHARED;
|
||
break;
|
||
|
||
/* Section Alignment */
|
||
case '0': /* align to byte boundary */
|
||
flags |= IMAGE_SCN_ALIGN_1BYTES;
|
||
align = 0;
|
||
break;
|
||
case '1': /* align to halfword boundary */
|
||
flags |= IMAGE_SCN_ALIGN_2BYTES;
|
||
align = 1;
|
||
break;
|
||
case '2': /* align to word boundary */
|
||
flags |= IMAGE_SCN_ALIGN_4BYTES;
|
||
align = 2;
|
||
break;
|
||
case '3': /* align to doubleword boundary */
|
||
flags |= IMAGE_SCN_ALIGN_8BYTES;
|
||
align = 3;
|
||
break;
|
||
case '4': /* align to quadword boundary */
|
||
flags |= IMAGE_SCN_ALIGN_16BYTES;
|
||
align = 4;
|
||
break;
|
||
case '5': /* align to 32 byte boundary */
|
||
flags |= IMAGE_SCN_ALIGN_32BYTES;
|
||
align = 5;
|
||
break;
|
||
case '6': /* align to 64 byte boundary */
|
||
flags |= IMAGE_SCN_ALIGN_64BYTES;
|
||
align = 6;
|
||
break;
|
||
#endif
|
||
default:
|
||
as_bad (_("unknown section attribute '%c'"),
|
||
*input_line_pointer);
|
||
break;
|
||
}
|
||
++input_line_pointer;
|
||
}
|
||
if (*input_line_pointer == '"')
|
||
++input_line_pointer;
|
||
}
|
||
}
|
||
|
||
sec = subseg_new (name, (subsegT) exp);
|
||
|
||
ppc_set_current_section (sec);
|
||
|
||
if (flags != SEC_NO_FLAGS)
|
||
{
|
||
if (! bfd_set_section_flags (stdoutput, sec, flags))
|
||
as_bad (_("error setting flags for \"%s\": %s"),
|
||
bfd_section_name (stdoutput, sec),
|
||
bfd_errmsg (bfd_get_error ()));
|
||
}
|
||
|
||
bfd_set_section_alignment (stdoutput, sec, align);
|
||
}
|
||
|
||
static void
|
||
ppc_pe_function (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
char *name;
|
||
char endc;
|
||
symbolS *ext_sym;
|
||
|
||
name = input_line_pointer;
|
||
endc = get_symbol_end ();
|
||
|
||
ext_sym = symbol_find_or_make (name);
|
||
|
||
*input_line_pointer = endc;
|
||
|
||
S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
|
||
SF_SET_FUNCTION (ext_sym);
|
||
SF_SET_PROCESS (ext_sym);
|
||
coff_add_linesym (ext_sym);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
static void
|
||
ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED)
|
||
{
|
||
if (tocdata_section == 0)
|
||
{
|
||
tocdata_section = subseg_new (".tocd", 0);
|
||
/* FIXME: section flags won't work. */
|
||
bfd_set_section_flags (stdoutput, tocdata_section,
|
||
(SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_READONLY | SEC_DATA));
|
||
|
||
bfd_set_section_alignment (stdoutput, tocdata_section, 2);
|
||
}
|
||
else
|
||
{
|
||
rdata_section = subseg_new (".tocd", 0);
|
||
}
|
||
|
||
ppc_set_current_section (tocdata_section);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
/* Don't adjust TOC relocs to use the section symbol. */
|
||
|
||
int
|
||
ppc_pe_fix_adjustable (fixS *fix)
|
||
{
|
||
return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
|
||
}
|
||
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* XCOFF specific symbol and file handling. */
|
||
|
||
/* Canonicalize the symbol name. We use the to force the suffix, if
|
||
any, to use square brackets, and to be in upper case. */
|
||
|
||
char *
|
||
ppc_canonicalize_symbol_name (char *name)
|
||
{
|
||
char *s;
|
||
|
||
if (ppc_stab_symbol)
|
||
return name;
|
||
|
||
for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
|
||
;
|
||
if (*s != '\0')
|
||
{
|
||
char brac;
|
||
|
||
if (*s == '[')
|
||
brac = ']';
|
||
else
|
||
{
|
||
*s = '[';
|
||
brac = '}';
|
||
}
|
||
|
||
for (s++; *s != '\0' && *s != brac; s++)
|
||
*s = TOUPPER (*s);
|
||
|
||
if (*s == '\0' || s[1] != '\0')
|
||
as_bad (_("bad symbol suffix"));
|
||
|
||
*s = ']';
|
||
}
|
||
|
||
return name;
|
||
}
|
||
|
||
/* Set the class of a symbol based on the suffix, if any. This is
|
||
called whenever a new symbol is created. */
|
||
|
||
void
|
||
ppc_symbol_new_hook (symbolS *sym)
|
||
{
|
||
struct ppc_tc_sy *tc;
|
||
const char *s;
|
||
|
||
tc = symbol_get_tc (sym);
|
||
tc->next = NULL;
|
||
tc->output = 0;
|
||
tc->symbol_class = -1;
|
||
tc->real_name = NULL;
|
||
tc->subseg = 0;
|
||
tc->align = 0;
|
||
tc->u.size = NULL;
|
||
tc->u.dw = NULL;
|
||
tc->within = NULL;
|
||
|
||
if (ppc_stab_symbol)
|
||
return;
|
||
|
||
s = strchr (S_GET_NAME (sym), '[');
|
||
if (s == (const char *) NULL)
|
||
{
|
||
/* There is no suffix. */
|
||
return;
|
||
}
|
||
|
||
++s;
|
||
|
||
switch (s[0])
|
||
{
|
||
case 'B':
|
||
if (strcmp (s, "BS]") == 0)
|
||
tc->symbol_class = XMC_BS;
|
||
break;
|
||
case 'D':
|
||
if (strcmp (s, "DB]") == 0)
|
||
tc->symbol_class = XMC_DB;
|
||
else if (strcmp (s, "DS]") == 0)
|
||
tc->symbol_class = XMC_DS;
|
||
break;
|
||
case 'G':
|
||
if (strcmp (s, "GL]") == 0)
|
||
tc->symbol_class = XMC_GL;
|
||
break;
|
||
case 'P':
|
||
if (strcmp (s, "PR]") == 0)
|
||
tc->symbol_class = XMC_PR;
|
||
break;
|
||
case 'R':
|
||
if (strcmp (s, "RO]") == 0)
|
||
tc->symbol_class = XMC_RO;
|
||
else if (strcmp (s, "RW]") == 0)
|
||
tc->symbol_class = XMC_RW;
|
||
break;
|
||
case 'S':
|
||
if (strcmp (s, "SV]") == 0)
|
||
tc->symbol_class = XMC_SV;
|
||
break;
|
||
case 'T':
|
||
if (strcmp (s, "TC]") == 0)
|
||
tc->symbol_class = XMC_TC;
|
||
else if (strcmp (s, "TI]") == 0)
|
||
tc->symbol_class = XMC_TI;
|
||
else if (strcmp (s, "TB]") == 0)
|
||
tc->symbol_class = XMC_TB;
|
||
else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
|
||
tc->symbol_class = XMC_TC0;
|
||
break;
|
||
case 'U':
|
||
if (strcmp (s, "UA]") == 0)
|
||
tc->symbol_class = XMC_UA;
|
||
else if (strcmp (s, "UC]") == 0)
|
||
tc->symbol_class = XMC_UC;
|
||
break;
|
||
case 'X':
|
||
if (strcmp (s, "XO]") == 0)
|
||
tc->symbol_class = XMC_XO;
|
||
break;
|
||
}
|
||
|
||
if (tc->symbol_class == -1)
|
||
as_bad (_("unrecognized symbol suffix"));
|
||
}
|
||
|
||
/* Set the class of a label based on where it is defined. This
|
||
handles symbols without suffixes. Also, move the symbol so that it
|
||
follows the csect symbol. */
|
||
|
||
void
|
||
ppc_frob_label (symbolS *sym)
|
||
{
|
||
if (ppc_current_csect != (symbolS *) NULL)
|
||
{
|
||
if (symbol_get_tc (sym)->symbol_class == -1)
|
||
symbol_get_tc (sym)->symbol_class = symbol_get_tc (ppc_current_csect)->symbol_class;
|
||
|
||
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
||
symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
|
||
&symbol_rootP, &symbol_lastP);
|
||
symbol_get_tc (ppc_current_csect)->within = sym;
|
||
symbol_get_tc (sym)->within = ppc_current_csect;
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
dwarf2_emit_label (sym);
|
||
#endif
|
||
}
|
||
|
||
/* This variable is set by ppc_frob_symbol if any absolute symbols are
|
||
seen. It tells ppc_adjust_symtab whether it needs to look through
|
||
the symbols. */
|
||
|
||
static bfd_boolean ppc_saw_abs;
|
||
|
||
/* Change the name of a symbol just before writing it out. Set the
|
||
real name if the .rename pseudo-op was used. Otherwise, remove any
|
||
class suffix. Return 1 if the symbol should not be included in the
|
||
symbol table. */
|
||
|
||
int
|
||
ppc_frob_symbol (symbolS *sym)
|
||
{
|
||
static symbolS *ppc_last_function;
|
||
static symbolS *set_end;
|
||
|
||
/* Discard symbols that should not be included in the output symbol
|
||
table. */
|
||
if (! symbol_used_in_reloc_p (sym)
|
||
&& ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
|
||
|| (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
|
||
&& ! symbol_get_tc (sym)->output
|
||
&& S_GET_STORAGE_CLASS (sym) != C_FILE)))
|
||
return 1;
|
||
|
||
/* This one will disappear anyway. Don't make a csect sym for it. */
|
||
if (sym == abs_section_sym)
|
||
return 1;
|
||
|
||
if (symbol_get_tc (sym)->real_name != (char *) NULL)
|
||
S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
|
||
else
|
||
{
|
||
const char *name;
|
||
const char *s;
|
||
|
||
name = S_GET_NAME (sym);
|
||
s = strchr (name, '[');
|
||
if (s != (char *) NULL)
|
||
{
|
||
unsigned int len;
|
||
char *snew;
|
||
|
||
len = s - name;
|
||
snew = xmalloc (len + 1);
|
||
memcpy (snew, name, len);
|
||
snew[len] = '\0';
|
||
|
||
S_SET_NAME (sym, snew);
|
||
}
|
||
}
|
||
|
||
if (set_end != (symbolS *) NULL)
|
||
{
|
||
SA_SET_SYM_ENDNDX (set_end, sym);
|
||
set_end = NULL;
|
||
}
|
||
|
||
if (SF_GET_FUNCTION (sym))
|
||
{
|
||
if (ppc_last_function != (symbolS *) NULL)
|
||
as_bad (_("two .function pseudo-ops with no intervening .ef"));
|
||
ppc_last_function = sym;
|
||
if (symbol_get_tc (sym)->u.size != (symbolS *) NULL)
|
||
{
|
||
resolve_symbol_value (symbol_get_tc (sym)->u.size);
|
||
SA_SET_SYM_FSIZE (sym,
|
||
(long) S_GET_VALUE (symbol_get_tc (sym)->u.size));
|
||
}
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_FCN
|
||
&& strcmp (S_GET_NAME (sym), ".ef") == 0)
|
||
{
|
||
if (ppc_last_function == (symbolS *) NULL)
|
||
as_bad (_(".ef with no preceding .function"));
|
||
else
|
||
{
|
||
set_end = ppc_last_function;
|
||
ppc_last_function = NULL;
|
||
|
||
/* We don't have a C_EFCN symbol, but we need to force the
|
||
COFF backend to believe that it has seen one. */
|
||
coff_last_function = NULL;
|
||
}
|
||
}
|
||
|
||
if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
|
||
&& (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
|
||
&& S_GET_STORAGE_CLASS (sym) != C_FILE
|
||
&& S_GET_STORAGE_CLASS (sym) != C_FCN
|
||
&& S_GET_STORAGE_CLASS (sym) != C_BLOCK
|
||
&& S_GET_STORAGE_CLASS (sym) != C_BSTAT
|
||
&& S_GET_STORAGE_CLASS (sym) != C_ESTAT
|
||
&& S_GET_STORAGE_CLASS (sym) != C_BINCL
|
||
&& S_GET_STORAGE_CLASS (sym) != C_EINCL
|
||
&& S_GET_SEGMENT (sym) != ppc_coff_debug_section)
|
||
S_SET_STORAGE_CLASS (sym, C_HIDEXT);
|
||
|
||
if (S_GET_STORAGE_CLASS (sym) == C_EXT
|
||
|| S_GET_STORAGE_CLASS (sym) == C_AIX_WEAKEXT
|
||
|| S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
|
||
{
|
||
int i;
|
||
union internal_auxent *a;
|
||
|
||
/* Create a csect aux. */
|
||
i = S_GET_NUMBER_AUXILIARY (sym);
|
||
S_SET_NUMBER_AUXILIARY (sym, i + 1);
|
||
a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
|
||
if (symbol_get_tc (sym)->symbol_class == XMC_TC0)
|
||
{
|
||
/* This is the TOC table. */
|
||
know (strcmp (S_GET_NAME (sym), "TOC") == 0);
|
||
a->x_csect.x_scnlen.l = 0;
|
||
a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
|
||
}
|
||
else if (symbol_get_tc (sym)->subseg != 0)
|
||
{
|
||
/* This is a csect symbol. x_scnlen is the size of the
|
||
csect. */
|
||
if (symbol_get_tc (sym)->next == (symbolS *) NULL)
|
||
a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
|
||
S_GET_SEGMENT (sym))
|
||
- S_GET_VALUE (sym));
|
||
else
|
||
{
|
||
resolve_symbol_value (symbol_get_tc (sym)->next);
|
||
a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
|
||
- S_GET_VALUE (sym));
|
||
}
|
||
a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
|
||
}
|
||
else if (S_GET_SEGMENT (sym) == bss_section)
|
||
{
|
||
/* This is a common symbol. */
|
||
a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
|
||
a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
|
||
if (S_IS_EXTERNAL (sym))
|
||
symbol_get_tc (sym)->symbol_class = XMC_RW;
|
||
else
|
||
symbol_get_tc (sym)->symbol_class = XMC_BS;
|
||
}
|
||
else if (S_GET_SEGMENT (sym) == absolute_section)
|
||
{
|
||
/* This is an absolute symbol. The csect will be created by
|
||
ppc_adjust_symtab. */
|
||
ppc_saw_abs = TRUE;
|
||
a->x_csect.x_smtyp = XTY_LD;
|
||
if (symbol_get_tc (sym)->symbol_class == -1)
|
||
symbol_get_tc (sym)->symbol_class = XMC_XO;
|
||
}
|
||
else if (! S_IS_DEFINED (sym))
|
||
{
|
||
/* This is an external symbol. */
|
||
a->x_csect.x_scnlen.l = 0;
|
||
a->x_csect.x_smtyp = XTY_ER;
|
||
}
|
||
else if (symbol_get_tc (sym)->symbol_class == XMC_TC)
|
||
{
|
||
symbolS *next;
|
||
|
||
/* This is a TOC definition. x_scnlen is the size of the
|
||
TOC entry. */
|
||
next = symbol_next (sym);
|
||
while (symbol_get_tc (next)->symbol_class == XMC_TC0)
|
||
next = symbol_next (next);
|
||
if (next == (symbolS *) NULL
|
||
|| symbol_get_tc (next)->symbol_class != XMC_TC)
|
||
{
|
||
if (ppc_after_toc_frag == (fragS *) NULL)
|
||
a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
|
||
data_section)
|
||
- S_GET_VALUE (sym));
|
||
else
|
||
a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
|
||
- S_GET_VALUE (sym));
|
||
}
|
||
else
|
||
{
|
||
resolve_symbol_value (next);
|
||
a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
|
||
- S_GET_VALUE (sym));
|
||
}
|
||
a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
|
||
}
|
||
else
|
||
{
|
||
symbolS *csect;
|
||
|
||
/* This is a normal symbol definition. x_scnlen is the
|
||
symbol index of the containing csect. */
|
||
if (S_GET_SEGMENT (sym) == text_section)
|
||
csect = ppc_text_csects;
|
||
else if (S_GET_SEGMENT (sym) == data_section)
|
||
csect = ppc_data_csects;
|
||
else
|
||
abort ();
|
||
|
||
/* Skip the initial dummy symbol. */
|
||
csect = symbol_get_tc (csect)->next;
|
||
|
||
if (csect == (symbolS *) NULL)
|
||
{
|
||
as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
|
||
a->x_csect.x_scnlen.l = 0;
|
||
}
|
||
else
|
||
{
|
||
while (symbol_get_tc (csect)->next != (symbolS *) NULL)
|
||
{
|
||
resolve_symbol_value (symbol_get_tc (csect)->next);
|
||
if (S_GET_VALUE (symbol_get_tc (csect)->next)
|
||
> S_GET_VALUE (sym))
|
||
break;
|
||
csect = symbol_get_tc (csect)->next;
|
||
}
|
||
|
||
a->x_csect.x_scnlen.p =
|
||
coffsymbol (symbol_get_bfdsym (csect))->native;
|
||
coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
|
||
1;
|
||
}
|
||
a->x_csect.x_smtyp = XTY_LD;
|
||
}
|
||
|
||
a->x_csect.x_parmhash = 0;
|
||
a->x_csect.x_snhash = 0;
|
||
if (symbol_get_tc (sym)->symbol_class == -1)
|
||
a->x_csect.x_smclas = XMC_PR;
|
||
else
|
||
a->x_csect.x_smclas = symbol_get_tc (sym)->symbol_class;
|
||
a->x_csect.x_stab = 0;
|
||
a->x_csect.x_snstab = 0;
|
||
|
||
/* Don't let the COFF backend resort these symbols. */
|
||
symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
|
||
{
|
||
/* We want the value to be the symbol index of the referenced
|
||
csect symbol. BFD will do that for us if we set the right
|
||
flags. */
|
||
asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
|
||
combined_entry_type *c = coffsymbol (bsym)->native;
|
||
|
||
S_SET_VALUE (sym, (valueT) (size_t) c);
|
||
coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
|
||
{
|
||
symbolS *block;
|
||
valueT base;
|
||
|
||
block = symbol_get_tc (sym)->within;
|
||
if (block)
|
||
{
|
||
/* The value is the offset from the enclosing csect. */
|
||
symbolS *csect;
|
||
|
||
csect = symbol_get_tc (block)->within;
|
||
resolve_symbol_value (csect);
|
||
base = S_GET_VALUE (csect);
|
||
}
|
||
else
|
||
base = 0;
|
||
|
||
S_SET_VALUE (sym, S_GET_VALUE (sym) - base);
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
|
||
|| S_GET_STORAGE_CLASS (sym) == C_EINCL)
|
||
{
|
||
/* We want the value to be a file offset into the line numbers.
|
||
BFD will do that for us if we set the right flags. We have
|
||
already set the value correctly. */
|
||
coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Adjust the symbol table. This creates csect symbols for all
|
||
absolute symbols. */
|
||
|
||
void
|
||
ppc_adjust_symtab (void)
|
||
{
|
||
symbolS *sym;
|
||
|
||
if (! ppc_saw_abs)
|
||
return;
|
||
|
||
for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
|
||
{
|
||
symbolS *csect;
|
||
int i;
|
||
union internal_auxent *a;
|
||
|
||
if (S_GET_SEGMENT (sym) != absolute_section)
|
||
continue;
|
||
|
||
csect = symbol_create (".abs[XO]", absolute_section,
|
||
S_GET_VALUE (sym), &zero_address_frag);
|
||
symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
|
||
S_SET_STORAGE_CLASS (csect, C_HIDEXT);
|
||
i = S_GET_NUMBER_AUXILIARY (csect);
|
||
S_SET_NUMBER_AUXILIARY (csect, i + 1);
|
||
a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
|
||
a->x_csect.x_scnlen.l = 0;
|
||
a->x_csect.x_smtyp = XTY_SD;
|
||
a->x_csect.x_parmhash = 0;
|
||
a->x_csect.x_snhash = 0;
|
||
a->x_csect.x_smclas = XMC_XO;
|
||
a->x_csect.x_stab = 0;
|
||
a->x_csect.x_snstab = 0;
|
||
|
||
symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
|
||
|
||
i = S_GET_NUMBER_AUXILIARY (sym);
|
||
a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
|
||
a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
|
||
coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
|
||
}
|
||
|
||
ppc_saw_abs = FALSE;
|
||
}
|
||
|
||
/* Set the VMA for a section. This is called on all the sections in
|
||
turn. */
|
||
|
||
void
|
||
ppc_frob_section (asection *sec)
|
||
{
|
||
static bfd_vma vma = 0;
|
||
|
||
/* Dwarf sections start at 0. */
|
||
if (bfd_get_section_flags (NULL, sec) & SEC_DEBUGGING)
|
||
return;
|
||
|
||
vma = md_section_align (sec, vma);
|
||
bfd_set_section_vma (stdoutput, sec, vma);
|
||
vma += bfd_section_size (stdoutput, sec);
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
char *
|
||
md_atof (int type, char *litp, int *sizep)
|
||
{
|
||
return ieee_md_atof (type, litp, sizep, target_big_endian);
|
||
}
|
||
|
||
/* Write a value out to the object file, using the appropriate
|
||
endianness. */
|
||
|
||
void
|
||
md_number_to_chars (char *buf, valueT val, int n)
|
||
{
|
||
if (target_big_endian)
|
||
number_to_chars_bigendian (buf, val, n);
|
||
else
|
||
number_to_chars_littleendian (buf, val, n);
|
||
}
|
||
|
||
/* Align a section (I don't know why this is machine dependent). */
|
||
|
||
valueT
|
||
md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr)
|
||
{
|
||
#ifdef OBJ_ELF
|
||
return addr;
|
||
#else
|
||
int align = bfd_get_section_alignment (stdoutput, seg);
|
||
|
||
return ((addr + (1 << align) - 1) & (-1 << align));
|
||
#endif
|
||
}
|
||
|
||
/* We don't have any form of relaxing. */
|
||
|
||
int
|
||
md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED,
|
||
asection *seg ATTRIBUTE_UNUSED)
|
||
{
|
||
abort ();
|
||
return 0;
|
||
}
|
||
|
||
/* Convert a machine dependent frag. We never generate these. */
|
||
|
||
void
|
||
md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
|
||
asection *sec ATTRIBUTE_UNUSED,
|
||
fragS *fragp ATTRIBUTE_UNUSED)
|
||
{
|
||
abort ();
|
||
}
|
||
|
||
/* We have no need to default values of symbols. */
|
||
|
||
symbolS *
|
||
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Functions concerning relocs. */
|
||
|
||
/* The location from which a PC relative jump should be calculated,
|
||
given a PC relative reloc. */
|
||
|
||
long
|
||
md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED)
|
||
{
|
||
return fixp->fx_frag->fr_address + fixp->fx_where;
|
||
}
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* This is called to see whether a fixup should be adjusted to use a
|
||
section symbol. We take the opportunity to change a fixup against
|
||
a symbol in the TOC subsegment into a reloc against the
|
||
corresponding .tc symbol. */
|
||
|
||
int
|
||
ppc_fix_adjustable (fixS *fix)
|
||
{
|
||
valueT val = resolve_symbol_value (fix->fx_addsy);
|
||
segT symseg = S_GET_SEGMENT (fix->fx_addsy);
|
||
TC_SYMFIELD_TYPE *tc;
|
||
|
||
if (symseg == absolute_section)
|
||
return 0;
|
||
|
||
/* Always adjust symbols in debugging sections. */
|
||
if (bfd_get_section_flags (stdoutput, symseg) & SEC_DEBUGGING)
|
||
return 1;
|
||
|
||
if (ppc_toc_csect != (symbolS *) NULL
|
||
&& fix->fx_addsy != ppc_toc_csect
|
||
&& symseg == data_section
|
||
&& val >= ppc_toc_frag->fr_address
|
||
&& (ppc_after_toc_frag == (fragS *) NULL
|
||
|| val < ppc_after_toc_frag->fr_address))
|
||
{
|
||
symbolS *sy;
|
||
|
||
for (sy = symbol_next (ppc_toc_csect);
|
||
sy != (symbolS *) NULL;
|
||
sy = symbol_next (sy))
|
||
{
|
||
TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
|
||
|
||
if (sy_tc->symbol_class == XMC_TC0)
|
||
continue;
|
||
if (sy_tc->symbol_class != XMC_TC)
|
||
break;
|
||
if (val == resolve_symbol_value (sy))
|
||
{
|
||
fix->fx_addsy = sy;
|
||
fix->fx_addnumber = val - ppc_toc_frag->fr_address;
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
as_bad_where (fix->fx_file, fix->fx_line,
|
||
_("symbol in .toc does not match any .tc"));
|
||
}
|
||
|
||
/* Possibly adjust the reloc to be against the csect. */
|
||
tc = symbol_get_tc (fix->fx_addsy);
|
||
if (tc->subseg == 0
|
||
&& tc->symbol_class != XMC_TC0
|
||
&& tc->symbol_class != XMC_TC
|
||
&& symseg != bss_section
|
||
/* Don't adjust if this is a reloc in the toc section. */
|
||
&& (symseg != data_section
|
||
|| ppc_toc_csect == NULL
|
||
|| val < ppc_toc_frag->fr_address
|
||
|| (ppc_after_toc_frag != NULL
|
||
&& val >= ppc_after_toc_frag->fr_address)))
|
||
{
|
||
symbolS *csect = tc->within;
|
||
|
||
/* If the symbol was not declared by a label (eg: a section symbol),
|
||
use the section instead of the csect. This doesn't happen in
|
||
normal AIX assembly code. */
|
||
if (csect == NULL)
|
||
csect = seg_info (symseg)->sym;
|
||
|
||
fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
|
||
fix->fx_addsy = csect;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Adjust a reloc against a .lcomm symbol to be against the base
|
||
.lcomm. */
|
||
if (symseg == bss_section
|
||
&& ! S_IS_EXTERNAL (fix->fx_addsy))
|
||
{
|
||
symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
|
||
|
||
fix->fx_offset += val - resolve_symbol_value (sy);
|
||
fix->fx_addsy = sy;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* A reloc from one csect to another must be kept. The assembler
|
||
will, of course, keep relocs between sections, and it will keep
|
||
absolute relocs, but we need to force it to keep PC relative relocs
|
||
between two csects in the same section. */
|
||
|
||
int
|
||
ppc_force_relocation (fixS *fix)
|
||
{
|
||
/* At this point fix->fx_addsy should already have been converted to
|
||
a csect symbol. If the csect does not include the fragment, then
|
||
we need to force the relocation. */
|
||
if (fix->fx_pcrel
|
||
&& fix->fx_addsy != NULL
|
||
&& symbol_get_tc (fix->fx_addsy)->subseg != 0
|
||
&& ((symbol_get_frag (fix->fx_addsy)->fr_address
|
||
> fix->fx_frag->fr_address)
|
||
|| (symbol_get_tc (fix->fx_addsy)->next != NULL
|
||
&& (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
|
||
<= fix->fx_frag->fr_address))))
|
||
return 1;
|
||
|
||
return generic_force_reloc (fix);
|
||
}
|
||
|
||
void
|
||
ppc_new_dot_label (symbolS *sym)
|
||
{
|
||
/* Anchor this label to the current csect for relocations. */
|
||
symbol_get_tc (sym)->within = ppc_current_csect;
|
||
}
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
#ifdef OBJ_ELF
|
||
/* If this function returns non-zero, it guarantees that a relocation
|
||
will be emitted for a fixup. */
|
||
|
||
int
|
||
ppc_force_relocation (fixS *fix)
|
||
{
|
||
/* Branch prediction relocations must force a relocation, as must
|
||
the vtable description relocs. */
|
||
switch (fix->fx_r_type)
|
||
{
|
||
case BFD_RELOC_PPC_B16_BRTAKEN:
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN:
|
||
case BFD_RELOC_PPC_BA16_BRTAKEN:
|
||
case BFD_RELOC_PPC_BA16_BRNTAKEN:
|
||
case BFD_RELOC_24_PLT_PCREL:
|
||
case BFD_RELOC_PPC64_TOC:
|
||
return 1;
|
||
case BFD_RELOC_PPC_B26:
|
||
case BFD_RELOC_PPC_BA26:
|
||
case BFD_RELOC_PPC_B16:
|
||
case BFD_RELOC_PPC_BA16:
|
||
/* All branch fixups targeting a localentry symbol must
|
||
force a relocation. */
|
||
if (fix->fx_addsy)
|
||
{
|
||
asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy);
|
||
elf_symbol_type *elfsym
|
||
= elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
|
||
gas_assert (elfsym);
|
||
if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0)
|
||
return 1;
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
|
||
&& fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
|
||
return 1;
|
||
|
||
return generic_force_reloc (fix);
|
||
}
|
||
|
||
int
|
||
ppc_fix_adjustable (fixS *fix)
|
||
{
|
||
switch (fix->fx_r_type)
|
||
{
|
||
/* All branch fixups targeting a localentry symbol must
|
||
continue using the symbol. */
|
||
case BFD_RELOC_PPC_B26:
|
||
case BFD_RELOC_PPC_BA26:
|
||
case BFD_RELOC_PPC_B16:
|
||
case BFD_RELOC_PPC_BA16:
|
||
case BFD_RELOC_PPC_B16_BRTAKEN:
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN:
|
||
case BFD_RELOC_PPC_BA16_BRTAKEN:
|
||
case BFD_RELOC_PPC_BA16_BRNTAKEN:
|
||
if (fix->fx_addsy)
|
||
{
|
||
asymbol *bfdsym = symbol_get_bfdsym (fix->fx_addsy);
|
||
elf_symbol_type *elfsym
|
||
= elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
|
||
gas_assert (elfsym);
|
||
if ((STO_PPC64_LOCAL_MASK & elfsym->internal_elf_sym.st_other) != 0)
|
||
return 0;
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
|
||
&& fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
|
||
&& fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
|
||
&& fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
|
||
&& fix->fx_r_type != BFD_RELOC_PPC64_GOT16_DS
|
||
&& fix->fx_r_type != BFD_RELOC_PPC64_GOT16_LO_DS
|
||
&& fix->fx_r_type != BFD_RELOC_GPREL16
|
||
&& fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
|
||
&& fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
|
||
&& !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
|
||
&& fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA));
|
||
}
|
||
#endif
|
||
|
||
void
|
||
ppc_frag_check (struct frag *fragP)
|
||
{
|
||
if (!fragP->has_code)
|
||
return;
|
||
|
||
if (ppc_mach() == bfd_mach_ppc_vle)
|
||
{
|
||
if (((fragP->fr_address + fragP->insn_addr) & 1) != 0)
|
||
as_bad (_("instruction address is not a multiple of 2"));
|
||
}
|
||
else
|
||
{
|
||
if (((fragP->fr_address + fragP->insn_addr) & 3) != 0)
|
||
as_bad (_("instruction address is not a multiple of 4"));
|
||
}
|
||
}
|
||
|
||
/* Implement HANDLE_ALIGN. This writes the NOP pattern into an
|
||
rs_align_code frag. */
|
||
|
||
void
|
||
ppc_handle_align (struct frag *fragP)
|
||
{
|
||
valueT count = (fragP->fr_next->fr_address
|
||
- (fragP->fr_address + fragP->fr_fix));
|
||
|
||
if (ppc_mach() == bfd_mach_ppc_vle && count != 0 && (count & 1) == 0)
|
||
{
|
||
char *dest = fragP->fr_literal + fragP->fr_fix;
|
||
|
||
fragP->fr_var = 2;
|
||
md_number_to_chars (dest, 0x4400, 2);
|
||
}
|
||
else if (count != 0 && (count & 3) == 0)
|
||
{
|
||
char *dest = fragP->fr_literal + fragP->fr_fix;
|
||
|
||
fragP->fr_var = 4;
|
||
|
||
if (count > 4 * nop_limit && count < 0x2000000)
|
||
{
|
||
struct frag *rest;
|
||
|
||
/* Make a branch, then follow with nops. Insert another
|
||
frag to handle the nops. */
|
||
md_number_to_chars (dest, 0x48000000 + count, 4);
|
||
count -= 4;
|
||
if (count == 0)
|
||
return;
|
||
|
||
rest = xmalloc (SIZEOF_STRUCT_FRAG + 4);
|
||
memcpy (rest, fragP, SIZEOF_STRUCT_FRAG);
|
||
fragP->fr_next = rest;
|
||
fragP = rest;
|
||
rest->fr_address += rest->fr_fix + 4;
|
||
rest->fr_fix = 0;
|
||
/* If we leave the next frag as rs_align_code we'll come here
|
||
again, resulting in a bunch of branches rather than a
|
||
branch followed by nops. */
|
||
rest->fr_type = rs_align;
|
||
dest = rest->fr_literal;
|
||
}
|
||
|
||
md_number_to_chars (dest, 0x60000000, 4);
|
||
|
||
if ((ppc_cpu & PPC_OPCODE_POWER6) != 0
|
||
|| (ppc_cpu & PPC_OPCODE_POWER7) != 0
|
||
|| (ppc_cpu & PPC_OPCODE_POWER8) != 0)
|
||
{
|
||
/* For power6, power7 and power8, we want the last nop to be a group
|
||
terminating one. Do this by inserting an rs_fill frag immediately
|
||
after this one, with its address set to the last nop location.
|
||
This will automatically reduce the number of nops in the current
|
||
frag by one. */
|
||
if (count > 4)
|
||
{
|
||
struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4);
|
||
|
||
memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG);
|
||
group_nop->fr_address = group_nop->fr_next->fr_address - 4;
|
||
group_nop->fr_fix = 0;
|
||
group_nop->fr_offset = 1;
|
||
group_nop->fr_type = rs_fill;
|
||
fragP->fr_next = group_nop;
|
||
dest = group_nop->fr_literal;
|
||
}
|
||
|
||
if ((ppc_cpu & PPC_OPCODE_POWER7) != 0
|
||
|| (ppc_cpu & PPC_OPCODE_POWER8) != 0)
|
||
{
|
||
if (ppc_cpu & PPC_OPCODE_E500MC)
|
||
/* e500mc group terminating nop: "ori 0,0,0". */
|
||
md_number_to_chars (dest, 0x60000000, 4);
|
||
else
|
||
/* power7/power8 group terminating nop: "ori 2,2,0". */
|
||
md_number_to_chars (dest, 0x60420000, 4);
|
||
}
|
||
else
|
||
/* power6 group terminating nop: "ori 1,1,0". */
|
||
md_number_to_chars (dest, 0x60210000, 4);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Apply a fixup to the object code. This is called for all the
|
||
fixups we generated by the calls to fix_new_exp, above. */
|
||
|
||
void
|
||
md_apply_fix (fixS *fixP, valueT *valP, segT seg)
|
||
{
|
||
valueT value = * valP;
|
||
offsetT fieldval;
|
||
const struct powerpc_operand *operand;
|
||
|
||
#ifdef OBJ_ELF
|
||
if (fixP->fx_addsy != NULL)
|
||
{
|
||
/* Hack around bfd_install_relocation brain damage. */
|
||
if (fixP->fx_pcrel)
|
||
value += fixP->fx_frag->fr_address + fixP->fx_where;
|
||
}
|
||
else
|
||
fixP->fx_done = 1;
|
||
#else
|
||
/* FIXME FIXME FIXME: The value we are passed in *valP includes
|
||
the symbol values. If we are doing this relocation the code in
|
||
write.c is going to call bfd_install_relocation, which is also
|
||
going to use the symbol value. That means that if the reloc is
|
||
fully resolved we want to use *valP since bfd_install_relocation is
|
||
not being used.
|
||
However, if the reloc is not fully resolved we do not want to
|
||
use *valP, and must use fx_offset instead. If the relocation
|
||
is PC-relative, we then need to re-apply md_pcrel_from_section
|
||
to this new relocation value. */
|
||
if (fixP->fx_addsy == (symbolS *) NULL)
|
||
fixP->fx_done = 1;
|
||
|
||
else
|
||
{
|
||
value = fixP->fx_offset;
|
||
if (fixP->fx_pcrel)
|
||
value -= md_pcrel_from_section (fixP, seg);
|
||
}
|
||
#endif
|
||
|
||
if (fixP->fx_subsy != (symbolS *) NULL)
|
||
{
|
||
/* We can't actually support subtracting a symbol. */
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
|
||
}
|
||
|
||
operand = NULL;
|
||
if (fixP->fx_pcrel_adjust != 0)
|
||
{
|
||
/* This is a fixup on an instruction. */
|
||
int opindex = fixP->fx_pcrel_adjust & 0xff;
|
||
|
||
operand = &powerpc_operands[opindex];
|
||
#ifdef OBJ_XCOFF
|
||
/* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
|
||
does not generate a reloc. It uses the offset of `sym' within its
|
||
csect. Other usages, such as `.long sym', generate relocs. This
|
||
is the documented behaviour of non-TOC symbols. */
|
||
if ((operand->flags & PPC_OPERAND_PARENS) != 0
|
||
&& (operand->bitm & 0xfff0) == 0xfff0
|
||
&& operand->shift == 0
|
||
&& (operand->insert == NULL || ppc_obj64)
|
||
&& fixP->fx_addsy != NULL
|
||
&& symbol_get_tc (fixP->fx_addsy)->subseg != 0
|
||
&& symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC
|
||
&& symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC0
|
||
&& S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
|
||
{
|
||
value = fixP->fx_offset;
|
||
fixP->fx_done = 1;
|
||
}
|
||
|
||
/* During parsing of instructions, a TOC16 reloc is generated for
|
||
instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined
|
||
in the toc. But at parse time, SYM may be not yet defined, so
|
||
check again here. */
|
||
if (fixP->fx_r_type == BFD_RELOC_16
|
||
&& fixP->fx_addsy != NULL
|
||
&& ppc_is_toc_sym (fixP->fx_addsy))
|
||
fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
|
||
#endif
|
||
}
|
||
|
||
/* Calculate value to be stored in field. */
|
||
fieldval = value;
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
#ifdef OBJ_ELF
|
||
case BFD_RELOC_PPC64_ADDR16_LO_DS:
|
||
case BFD_RELOC_PPC_VLE_LO16A:
|
||
case BFD_RELOC_PPC_VLE_LO16D:
|
||
#endif
|
||
case BFD_RELOC_LO16:
|
||
case BFD_RELOC_LO16_PCREL:
|
||
fieldval = value & 0xffff;
|
||
sign_extend_16:
|
||
if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
fieldval = SEX16 (fieldval);
|
||
fixP->fx_no_overflow = 1;
|
||
break;
|
||
|
||
case BFD_RELOC_HI16:
|
||
case BFD_RELOC_HI16_PCREL:
|
||
#ifdef OBJ_ELF
|
||
if (REPORT_OVERFLOW_HI && ppc_obj64)
|
||
{
|
||
fieldval = value >> 16;
|
||
if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
{
|
||
valueT sign = (((valueT) -1 >> 16) + 1) >> 1;
|
||
fieldval = ((valueT) fieldval ^ sign) - sign;
|
||
}
|
||
break;
|
||
}
|
||
/* Fall thru */
|
||
|
||
case BFD_RELOC_PPC_VLE_HI16A:
|
||
case BFD_RELOC_PPC_VLE_HI16D:
|
||
case BFD_RELOC_PPC64_ADDR16_HIGH:
|
||
#endif
|
||
fieldval = PPC_HI (value);
|
||
goto sign_extend_16;
|
||
|
||
case BFD_RELOC_HI16_S:
|
||
case BFD_RELOC_HI16_S_PCREL:
|
||
#ifdef OBJ_ELF
|
||
if (REPORT_OVERFLOW_HI && ppc_obj64)
|
||
{
|
||
fieldval = (value + 0x8000) >> 16;
|
||
if (operand != NULL && (operand->flags & PPC_OPERAND_SIGNED) != 0)
|
||
{
|
||
valueT sign = (((valueT) -1 >> 16) + 1) >> 1;
|
||
fieldval = ((valueT) fieldval ^ sign) - sign;
|
||
}
|
||
break;
|
||
}
|
||
/* Fall thru */
|
||
|
||
case BFD_RELOC_PPC_VLE_HA16A:
|
||
case BFD_RELOC_PPC_VLE_HA16D:
|
||
case BFD_RELOC_PPC64_ADDR16_HIGHA:
|
||
#endif
|
||
fieldval = PPC_HA (value);
|
||
goto sign_extend_16;
|
||
|
||
#ifdef OBJ_ELF
|
||
case BFD_RELOC_PPC64_HIGHER:
|
||
fieldval = PPC_HIGHER (value);
|
||
goto sign_extend_16;
|
||
|
||
case BFD_RELOC_PPC64_HIGHER_S:
|
||
fieldval = PPC_HIGHERA (value);
|
||
goto sign_extend_16;
|
||
|
||
case BFD_RELOC_PPC64_HIGHEST:
|
||
fieldval = PPC_HIGHEST (value);
|
||
goto sign_extend_16;
|
||
|
||
case BFD_RELOC_PPC64_HIGHEST_S:
|
||
fieldval = PPC_HIGHESTA (value);
|
||
goto sign_extend_16;
|
||
#endif
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (operand != NULL)
|
||
{
|
||
/* Handle relocs in an insn. */
|
||
char *where;
|
||
unsigned long insn;
|
||
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
#ifdef OBJ_ELF
|
||
/* The following relocs can't be calculated by the assembler.
|
||
Leave the field zero. */
|
||
case BFD_RELOC_PPC_TPREL16:
|
||
case BFD_RELOC_PPC_TPREL16_LO:
|
||
case BFD_RELOC_PPC_TPREL16_HI:
|
||
case BFD_RELOC_PPC_TPREL16_HA:
|
||
case BFD_RELOC_PPC_DTPREL16:
|
||
case BFD_RELOC_PPC_DTPREL16_LO:
|
||
case BFD_RELOC_PPC_DTPREL16_HI:
|
||
case BFD_RELOC_PPC_DTPREL16_HA:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_LO:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HI:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HA:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_LO:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HI:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HA:
|
||
case BFD_RELOC_PPC_GOT_TPREL16:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HI:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HA:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HI:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HA:
|
||
case BFD_RELOC_PPC64_TPREL16_DS:
|
||
case BFD_RELOC_PPC64_TPREL16_LO_DS:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGH:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHA:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHER:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHERA:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHEST:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGH:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHA:
|
||
case BFD_RELOC_PPC64_DTPREL16_DS:
|
||
case BFD_RELOC_PPC64_DTPREL16_LO_DS:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHER:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
|
||
gas_assert (fixP->fx_addsy != NULL);
|
||
S_SET_THREAD_LOCAL (fixP->fx_addsy);
|
||
fieldval = 0;
|
||
break;
|
||
|
||
/* These also should leave the field zero for the same
|
||
reason. Note that older versions of gas wrote values
|
||
here. If we want to go back to the old behaviour, then
|
||
all _LO and _LO_DS cases will need to be treated like
|
||
BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */
|
||
case BFD_RELOC_16_GOTOFF:
|
||
case BFD_RELOC_LO16_GOTOFF:
|
||
case BFD_RELOC_HI16_GOTOFF:
|
||
case BFD_RELOC_HI16_S_GOTOFF:
|
||
case BFD_RELOC_LO16_PLTOFF:
|
||
case BFD_RELOC_HI16_PLTOFF:
|
||
case BFD_RELOC_HI16_S_PLTOFF:
|
||
case BFD_RELOC_GPREL16:
|
||
case BFD_RELOC_16_BASEREL:
|
||
case BFD_RELOC_LO16_BASEREL:
|
||
case BFD_RELOC_HI16_BASEREL:
|
||
case BFD_RELOC_HI16_S_BASEREL:
|
||
case BFD_RELOC_PPC_TOC16:
|
||
case BFD_RELOC_PPC64_TOC16_LO:
|
||
case BFD_RELOC_PPC64_TOC16_HI:
|
||
case BFD_RELOC_PPC64_TOC16_HA:
|
||
case BFD_RELOC_PPC64_PLTGOT16:
|
||
case BFD_RELOC_PPC64_PLTGOT16_LO:
|
||
case BFD_RELOC_PPC64_PLTGOT16_HI:
|
||
case BFD_RELOC_PPC64_PLTGOT16_HA:
|
||
case BFD_RELOC_PPC64_GOT16_DS:
|
||
case BFD_RELOC_PPC64_GOT16_LO_DS:
|
||
case BFD_RELOC_PPC64_PLT16_LO_DS:
|
||
case BFD_RELOC_PPC64_SECTOFF_DS:
|
||
case BFD_RELOC_PPC64_SECTOFF_LO_DS:
|
||
case BFD_RELOC_PPC64_TOC16_DS:
|
||
case BFD_RELOC_PPC64_TOC16_LO_DS:
|
||
case BFD_RELOC_PPC64_PLTGOT16_DS:
|
||
case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
|
||
case BFD_RELOC_PPC_EMB_NADDR16:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_LO:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_HI:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_HA:
|
||
case BFD_RELOC_PPC_EMB_SDAI16:
|
||
case BFD_RELOC_PPC_EMB_SDA2I16:
|
||
case BFD_RELOC_PPC_EMB_SDA2REL:
|
||
case BFD_RELOC_PPC_EMB_SDA21:
|
||
case BFD_RELOC_PPC_EMB_MRKREF:
|
||
case BFD_RELOC_PPC_EMB_RELSEC16:
|
||
case BFD_RELOC_PPC_EMB_RELST_LO:
|
||
case BFD_RELOC_PPC_EMB_RELST_HI:
|
||
case BFD_RELOC_PPC_EMB_RELST_HA:
|
||
case BFD_RELOC_PPC_EMB_BIT_FLD:
|
||
case BFD_RELOC_PPC_EMB_RELSDA:
|
||
case BFD_RELOC_PPC_VLE_SDA21:
|
||
case BFD_RELOC_PPC_VLE_SDA21_LO:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
|
||
gas_assert (fixP->fx_addsy != NULL);
|
||
/* Fall thru */
|
||
|
||
case BFD_RELOC_PPC_TLS:
|
||
case BFD_RELOC_PPC_TLSGD:
|
||
case BFD_RELOC_PPC_TLSLD:
|
||
fieldval = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
case BFD_RELOC_PPC_B16:
|
||
/* Adjust the offset to the instruction boundary. */
|
||
fieldval += 2;
|
||
break;
|
||
#endif
|
||
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
case BFD_RELOC_PPC_DTPMOD:
|
||
case BFD_RELOC_PPC_TPREL:
|
||
case BFD_RELOC_PPC_DTPREL:
|
||
case BFD_RELOC_PPC_COPY:
|
||
case BFD_RELOC_PPC_GLOB_DAT:
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
case BFD_RELOC_PPC_EMB_NADDR32:
|
||
case BFD_RELOC_PPC64_TOC:
|
||
case BFD_RELOC_CTOR:
|
||
case BFD_RELOC_32:
|
||
case BFD_RELOC_32_PCREL:
|
||
case BFD_RELOC_RVA:
|
||
case BFD_RELOC_64:
|
||
case BFD_RELOC_64_PCREL:
|
||
case BFD_RELOC_PPC64_ADDR64_LOCAL:
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("%s unsupported as instruction fixup"),
|
||
bfd_get_reloc_code_name (fixP->fx_r_type));
|
||
fixP->fx_done = 1;
|
||
return;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
/* powerpc uses RELA style relocs, so if emitting a reloc the field
|
||
contents can stay at zero. */
|
||
#define APPLY_RELOC fixP->fx_done
|
||
#else
|
||
#define APPLY_RELOC 1
|
||
#endif
|
||
if ((fieldval != 0 && APPLY_RELOC) || operand->insert != NULL)
|
||
{
|
||
/* Fetch the instruction, insert the fully resolved operand
|
||
value, and stuff the instruction back again. */
|
||
where = fixP->fx_frag->fr_literal + fixP->fx_where;
|
||
if (target_big_endian)
|
||
{
|
||
if (fixP->fx_size == 4)
|
||
insn = bfd_getb32 ((unsigned char *) where);
|
||
else
|
||
insn = bfd_getb16 ((unsigned char *) where);
|
||
}
|
||
else
|
||
{
|
||
if (fixP->fx_size == 4)
|
||
insn = bfd_getl32 ((unsigned char *) where);
|
||
else
|
||
insn = bfd_getl16 ((unsigned char *) where);
|
||
}
|
||
insn = ppc_insert_operand (insn, operand, fieldval,
|
||
fixP->tc_fix_data.ppc_cpu,
|
||
fixP->fx_file, fixP->fx_line);
|
||
if (target_big_endian)
|
||
{
|
||
if (fixP->fx_size == 4)
|
||
bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
|
||
else
|
||
bfd_putb16 ((bfd_vma) insn, (unsigned char *) where);
|
||
}
|
||
else
|
||
{
|
||
if (fixP->fx_size == 4)
|
||
bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
|
||
else
|
||
bfd_putl16 ((bfd_vma) insn, (unsigned char *) where);
|
||
}
|
||
}
|
||
|
||
if (fixP->fx_done)
|
||
/* Nothing else to do here. */
|
||
return;
|
||
|
||
gas_assert (fixP->fx_addsy != NULL);
|
||
if (fixP->fx_r_type == BFD_RELOC_NONE)
|
||
{
|
||
char *sfile;
|
||
unsigned int sline;
|
||
|
||
/* Use expr_symbol_where to see if this is an expression
|
||
symbol. */
|
||
if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("unresolved expression that must be resolved"));
|
||
else
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("unsupported relocation against %s"),
|
||
S_GET_NAME (fixP->fx_addsy));
|
||
fixP->fx_done = 1;
|
||
return;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Handle relocs in data. */
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
if (fixP->fx_addsy
|
||
&& !S_IS_DEFINED (fixP->fx_addsy)
|
||
&& !S_IS_WEAK (fixP->fx_addsy))
|
||
S_SET_WEAK (fixP->fx_addsy);
|
||
/* Fall thru */
|
||
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
fixP->fx_done = 0;
|
||
break;
|
||
|
||
#ifdef OBJ_ELF
|
||
/* These can appear with @l etc. in data. */
|
||
case BFD_RELOC_LO16:
|
||
case BFD_RELOC_LO16_PCREL:
|
||
case BFD_RELOC_HI16:
|
||
case BFD_RELOC_HI16_PCREL:
|
||
case BFD_RELOC_HI16_S:
|
||
case BFD_RELOC_HI16_S_PCREL:
|
||
case BFD_RELOC_PPC64_HIGHER:
|
||
case BFD_RELOC_PPC64_HIGHER_S:
|
||
case BFD_RELOC_PPC64_HIGHEST:
|
||
case BFD_RELOC_PPC64_HIGHEST_S:
|
||
case BFD_RELOC_PPC64_ADDR16_HIGH:
|
||
case BFD_RELOC_PPC64_ADDR16_HIGHA:
|
||
case BFD_RELOC_PPC64_ADDR64_LOCAL:
|
||
break;
|
||
|
||
case BFD_RELOC_PPC_DTPMOD:
|
||
case BFD_RELOC_PPC_TPREL:
|
||
case BFD_RELOC_PPC_DTPREL:
|
||
S_SET_THREAD_LOCAL (fixP->fx_addsy);
|
||
break;
|
||
|
||
/* Just punt all of these to the linker. */
|
||
case BFD_RELOC_PPC_B16_BRTAKEN:
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN:
|
||
case BFD_RELOC_16_GOTOFF:
|
||
case BFD_RELOC_LO16_GOTOFF:
|
||
case BFD_RELOC_HI16_GOTOFF:
|
||
case BFD_RELOC_HI16_S_GOTOFF:
|
||
case BFD_RELOC_LO16_PLTOFF:
|
||
case BFD_RELOC_HI16_PLTOFF:
|
||
case BFD_RELOC_HI16_S_PLTOFF:
|
||
case BFD_RELOC_PPC_COPY:
|
||
case BFD_RELOC_PPC_GLOB_DAT:
|
||
case BFD_RELOC_16_BASEREL:
|
||
case BFD_RELOC_LO16_BASEREL:
|
||
case BFD_RELOC_HI16_BASEREL:
|
||
case BFD_RELOC_HI16_S_BASEREL:
|
||
case BFD_RELOC_PPC_TLS:
|
||
case BFD_RELOC_PPC_DTPREL16_LO:
|
||
case BFD_RELOC_PPC_DTPREL16_HI:
|
||
case BFD_RELOC_PPC_DTPREL16_HA:
|
||
case BFD_RELOC_PPC_TPREL16_LO:
|
||
case BFD_RELOC_PPC_TPREL16_HI:
|
||
case BFD_RELOC_PPC_TPREL16_HA:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_LO:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HI:
|
||
case BFD_RELOC_PPC_GOT_TLSGD16_HA:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_LO:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HI:
|
||
case BFD_RELOC_PPC_GOT_TLSLD16_HA:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HI:
|
||
case BFD_RELOC_PPC_GOT_DTPREL16_HA:
|
||
case BFD_RELOC_PPC_GOT_TPREL16:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_LO:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HI:
|
||
case BFD_RELOC_PPC_GOT_TPREL16_HA:
|
||
case BFD_RELOC_24_PLT_PCREL:
|
||
case BFD_RELOC_PPC_LOCAL24PC:
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
case BFD_RELOC_GPREL16:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
|
||
case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
|
||
case BFD_RELOC_PPC_EMB_NADDR32:
|
||
case BFD_RELOC_PPC_EMB_NADDR16:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_LO:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_HI:
|
||
case BFD_RELOC_PPC_EMB_NADDR16_HA:
|
||
case BFD_RELOC_PPC_EMB_SDAI16:
|
||
case BFD_RELOC_PPC_EMB_SDA2REL:
|
||
case BFD_RELOC_PPC_EMB_SDA2I16:
|
||
case BFD_RELOC_PPC_EMB_SDA21:
|
||
case BFD_RELOC_PPC_VLE_SDA21_LO:
|
||
case BFD_RELOC_PPC_EMB_MRKREF:
|
||
case BFD_RELOC_PPC_EMB_RELSEC16:
|
||
case BFD_RELOC_PPC_EMB_RELST_LO:
|
||
case BFD_RELOC_PPC_EMB_RELST_HI:
|
||
case BFD_RELOC_PPC_EMB_RELST_HA:
|
||
case BFD_RELOC_PPC_EMB_BIT_FLD:
|
||
case BFD_RELOC_PPC_EMB_RELSDA:
|
||
case BFD_RELOC_PPC64_TOC:
|
||
case BFD_RELOC_PPC_TOC16:
|
||
case BFD_RELOC_PPC64_TOC16_LO:
|
||
case BFD_RELOC_PPC64_TOC16_HI:
|
||
case BFD_RELOC_PPC64_TOC16_HA:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGH:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHA:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHER:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
|
||
case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGH:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHA:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHER:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHERA:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHEST:
|
||
case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
|
||
fixP->fx_done = 0;
|
||
break;
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
case BFD_RELOC_NONE:
|
||
#endif
|
||
case BFD_RELOC_CTOR:
|
||
case BFD_RELOC_32:
|
||
case BFD_RELOC_32_PCREL:
|
||
case BFD_RELOC_RVA:
|
||
case BFD_RELOC_64:
|
||
case BFD_RELOC_64_PCREL:
|
||
case BFD_RELOC_16:
|
||
case BFD_RELOC_16_PCREL:
|
||
case BFD_RELOC_8:
|
||
break;
|
||
|
||
default:
|
||
fprintf (stderr,
|
||
_("Gas failure, reloc value %d\n"), fixP->fx_r_type);
|
||
fflush (stderr);
|
||
abort ();
|
||
}
|
||
|
||
if (fixP->fx_size && APPLY_RELOC)
|
||
md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
|
||
fieldval, fixP->fx_size);
|
||
if (warn_476
|
||
&& (seg->flags & SEC_CODE) != 0
|
||
&& fixP->fx_size == 4
|
||
&& fixP->fx_done
|
||
&& !fixP->fx_tcbit
|
||
&& (fixP->fx_r_type == BFD_RELOC_32
|
||
|| fixP->fx_r_type == BFD_RELOC_CTOR
|
||
|| fixP->fx_r_type == BFD_RELOC_32_PCREL))
|
||
as_warn_where (fixP->fx_file, fixP->fx_line,
|
||
_("data in executable section"));
|
||
}
|
||
|
||
/* We are only able to convert some relocs to pc-relative. */
|
||
if (!fixP->fx_done && fixP->fx_pcrel)
|
||
{
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
case BFD_RELOC_LO16:
|
||
fixP->fx_r_type = BFD_RELOC_LO16_PCREL;
|
||
break;
|
||
|
||
case BFD_RELOC_HI16:
|
||
fixP->fx_r_type = BFD_RELOC_HI16_PCREL;
|
||
break;
|
||
|
||
case BFD_RELOC_HI16_S:
|
||
fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL;
|
||
break;
|
||
|
||
case BFD_RELOC_64:
|
||
fixP->fx_r_type = BFD_RELOC_64_PCREL;
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
fixP->fx_r_type = BFD_RELOC_32_PCREL;
|
||
break;
|
||
|
||
case BFD_RELOC_16:
|
||
fixP->fx_r_type = BFD_RELOC_16_PCREL;
|
||
break;
|
||
|
||
/* Some of course are already pc-relative. */
|
||
case BFD_RELOC_LO16_PCREL:
|
||
case BFD_RELOC_HI16_PCREL:
|
||
case BFD_RELOC_HI16_S_PCREL:
|
||
case BFD_RELOC_64_PCREL:
|
||
case BFD_RELOC_32_PCREL:
|
||
case BFD_RELOC_16_PCREL:
|
||
case BFD_RELOC_PPC_B16:
|
||
case BFD_RELOC_PPC_B16_BRTAKEN:
|
||
case BFD_RELOC_PPC_B16_BRNTAKEN:
|
||
case BFD_RELOC_PPC_B26:
|
||
case BFD_RELOC_PPC_LOCAL24PC:
|
||
case BFD_RELOC_24_PLT_PCREL:
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
case BFD_RELOC_64_PLT_PCREL:
|
||
case BFD_RELOC_PPC_VLE_REL8:
|
||
case BFD_RELOC_PPC_VLE_REL15:
|
||
case BFD_RELOC_PPC_VLE_REL24:
|
||
break;
|
||
|
||
default:
|
||
if (fixP->fx_addsy)
|
||
{
|
||
char *sfile;
|
||
unsigned int sline;
|
||
|
||
/* Use expr_symbol_where to see if this is an
|
||
expression symbol. */
|
||
if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("unresolved expression that must"
|
||
" be resolved"));
|
||
else
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("cannot emit PC relative %s relocation"
|
||
" against %s"),
|
||
bfd_get_reloc_code_name (fixP->fx_r_type),
|
||
S_GET_NAME (fixP->fx_addsy));
|
||
}
|
||
else
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
_("unable to resolve expression"));
|
||
fixP->fx_done = 1;
|
||
break;
|
||
}
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
ppc_elf_validate_fix (fixP, seg);
|
||
fixP->fx_addnumber = value;
|
||
|
||
/* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
|
||
from the section contents. If we are going to be emitting a reloc
|
||
then the section contents are immaterial, so don't warn if they
|
||
happen to overflow. Leave such warnings to ld. */
|
||
if (!fixP->fx_done)
|
||
{
|
||
fixP->fx_no_overflow = 1;
|
||
|
||
/* Arrange to emit .TOC. as a normal symbol if used in anything
|
||
but .TOC.@tocbase. */
|
||
if (ppc_obj64
|
||
&& fixP->fx_r_type != BFD_RELOC_PPC64_TOC
|
||
&& fixP->fx_addsy != NULL
|
||
&& strcmp (S_GET_NAME (fixP->fx_addsy), ".TOC.") == 0)
|
||
symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP;
|
||
}
|
||
#else
|
||
if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
|
||
fixP->fx_addnumber = 0;
|
||
else
|
||
{
|
||
#ifdef TE_PE
|
||
fixP->fx_addnumber = 0;
|
||
#else
|
||
/* We want to use the offset within the toc, not the actual VMA
|
||
of the symbol. */
|
||
fixP->fx_addnumber =
|
||
- bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy))
|
||
- S_GET_VALUE (ppc_toc_csect);
|
||
/* Set *valP to avoid errors. */
|
||
*valP = value;
|
||
#endif
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Generate a reloc for a fixup. */
|
||
|
||
arelent *
|
||
tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
|
||
{
|
||
arelent *reloc;
|
||
|
||
reloc = (arelent *) xmalloc (sizeof (arelent));
|
||
|
||
reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
|
||
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
|
||
if (reloc->howto == (reloc_howto_type *) NULL)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("reloc %d not supported by object file format"),
|
||
(int) fixp->fx_r_type);
|
||
return NULL;
|
||
}
|
||
reloc->addend = fixp->fx_addnumber;
|
||
|
||
return reloc;
|
||
}
|
||
|
||
void
|
||
ppc_cfi_frame_initial_instructions (void)
|
||
{
|
||
cfi_add_CFA_def_cfa (1, 0);
|
||
}
|
||
|
||
int
|
||
tc_ppc_regname_to_dw2regnum (char *regname)
|
||
{
|
||
unsigned int regnum = -1;
|
||
unsigned int i;
|
||
const char *p;
|
||
char *q;
|
||
static struct { char *name; int dw2regnum; } regnames[] =
|
||
{
|
||
{ "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
|
||
{ "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
|
||
{ "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
|
||
{ "spe_acc", 111 }, { "spefscr", 112 }
|
||
};
|
||
|
||
for (i = 0; i < ARRAY_SIZE (regnames); ++i)
|
||
if (strcmp (regnames[i].name, regname) == 0)
|
||
return regnames[i].dw2regnum;
|
||
|
||
if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v')
|
||
{
|
||
p = regname + 1 + (regname[1] == '.');
|
||
regnum = strtoul (p, &q, 10);
|
||
if (p == q || *q || regnum >= 32)
|
||
return -1;
|
||
if (regname[0] == 'f')
|
||
regnum += 32;
|
||
else if (regname[0] == 'v')
|
||
regnum += 77;
|
||
}
|
||
else if (regname[0] == 'c' && regname[1] == 'r')
|
||
{
|
||
p = regname + 2 + (regname[2] == '.');
|
||
if (p[0] < '0' || p[0] > '7' || p[1])
|
||
return -1;
|
||
regnum = p[0] - '0' + 68;
|
||
}
|
||
return regnum;
|
||
}
|