4067 lines
101 KiB
C
4067 lines
101 KiB
C
/* tc-sh.c -- Assemble code for the Hitachi Super-H
|
||
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
|
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Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
|
||
|
||
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
|
||
the Free Software Foundation; either version 2, or (at your option)
|
||
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
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GAS; see the file COPYING. If not, write to
|
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Written By Steve Chamberlain <sac@cygnus.com> */
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#include <stdio.h>
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#include "as.h"
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#include "bfd.h"
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#include "subsegs.h"
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#define DEFINE_TABLE
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#include "opcodes/sh-opc.h"
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#include "safe-ctype.h"
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#include "struc-symbol.h"
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#ifdef OBJ_ELF
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#include "elf/sh.h"
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#endif
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#include "dwarf2dbg.h"
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typedef struct
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{
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sh_arg_type type;
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int reg;
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expressionS immediate;
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}
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sh_operand_info;
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const char comment_chars[] = "!";
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const char line_separator_chars[] = ";";
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const char line_comment_chars[] = "!#";
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static void s_uses PARAMS ((int));
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static void sh_count_relocs PARAMS ((bfd *, segT, PTR));
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static void sh_frob_section PARAMS ((bfd *, segT, PTR));
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static void s_uacons PARAMS ((int));
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static sh_opcode_info *find_cooked_opcode PARAMS ((char **));
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static unsigned int assemble_ppi PARAMS ((char *, sh_opcode_info *));
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static void little PARAMS ((int));
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static void big PARAMS ((int));
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static int parse_reg PARAMS ((char *, int *, int *));
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static char *parse_exp PARAMS ((char *, sh_operand_info *));
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static char *parse_at PARAMS ((char *, sh_operand_info *));
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static void get_operand PARAMS ((char **, sh_operand_info *));
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static char *get_operands
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PARAMS ((sh_opcode_info *, char *, sh_operand_info *));
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static sh_opcode_info *get_specific
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PARAMS ((sh_opcode_info *, sh_operand_info *));
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static void insert PARAMS ((char *, int, int, sh_operand_info *));
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static void build_relax PARAMS ((sh_opcode_info *, sh_operand_info *));
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static char *insert_loop_bounds PARAMS ((char *, sh_operand_info *));
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static unsigned int build_Mytes
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PARAMS ((sh_opcode_info *, sh_operand_info *));
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#ifdef OBJ_ELF
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static void sh_elf_cons PARAMS ((int));
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inline static int sh_PIC_related_p PARAMS ((symbolS *));
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static int sh_check_fixup PARAMS ((expressionS *, bfd_reloc_code_real_type *));
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inline static char *sh_end_of_match PARAMS ((char *, char *));
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symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
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#endif
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static void
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big (ignore)
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int ignore ATTRIBUTE_UNUSED;
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{
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if (! target_big_endian)
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as_bad (_("directive .big encountered when option -big required"));
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/* Stop further messages. */
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target_big_endian = 1;
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}
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static void
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little (ignore)
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int ignore ATTRIBUTE_UNUSED;
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{
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if (target_big_endian)
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as_bad (_("directive .little encountered when option -little required"));
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/* Stop further messages. */
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target_big_endian = 0;
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}
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/* This table describes all the machine specific pseudo-ops the assembler
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has to support. The fields are:
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pseudo-op name without dot
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function to call to execute this pseudo-op
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Integer arg to pass to the function. */
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const pseudo_typeS md_pseudo_table[] =
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{
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#ifdef OBJ_ELF
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{"long", sh_elf_cons, 4},
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{"int", sh_elf_cons, 4},
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{"word", sh_elf_cons, 2},
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{"short", sh_elf_cons, 2},
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#else
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{"int", cons, 4},
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{"word", cons, 2},
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#endif /* OBJ_ELF */
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{"big", big, 0},
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{"form", listing_psize, 0},
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{"little", little, 0},
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{"heading", listing_title, 0},
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{"import", s_ignore, 0},
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{"page", listing_eject, 0},
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{"program", s_ignore, 0},
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{"uses", s_uses, 0},
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{"uaword", s_uacons, 2},
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{"ualong", s_uacons, 4},
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{"uaquad", s_uacons, 8},
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||
{"2byte", s_uacons, 2},
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{"4byte", s_uacons, 4},
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{"8byte", s_uacons, 8},
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||
#ifdef BFD_ASSEMBLER
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{"file", dwarf2_directive_file, 0 },
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||
{"loc", dwarf2_directive_loc, 0 },
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#endif
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#ifdef HAVE_SH64
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{"mode", s_sh64_mode, 0 },
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/* Have the old name too. */
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{"isa", s_sh64_mode, 0 },
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/* Assert that the right ABI is used. */
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{"abi", s_sh64_abi, 0 },
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{ "vtable_inherit", sh64_vtable_inherit, 0 },
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||
{ "vtable_entry", sh64_vtable_entry, 0 },
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#endif /* HAVE_SH64 */
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{0, 0, 0}
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||
};
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||
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/*int md_reloc_size; */
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int sh_relax; /* set if -relax seen */
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/* Whether -small was seen. */
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int sh_small;
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/* Whether -dsp was seen. */
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static int sh_dsp;
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/* The bit mask of architectures that could
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accomodate the insns seen so far. */
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static int valid_arch;
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const char EXP_CHARS[] = "eE";
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/* Chars that mean this number is a floating point constant. */
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/* As in 0f12.456 */
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/* or 0d1.2345e12 */
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const char FLT_CHARS[] = "rRsSfFdDxXpP";
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#define C(a,b) ENCODE_RELAX(a,b)
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#define ENCODE_RELAX(what,length) (((what) << 4) + (length))
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#define GET_WHAT(x) ((x>>4))
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/* These are the three types of relaxable instrction. */
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/* These are the types of relaxable instructions; except for END which is
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a marker. */
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#define COND_JUMP 1
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#define COND_JUMP_DELAY 2
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#define UNCOND_JUMP 3
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#ifdef HAVE_SH64
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||
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/* A 16-bit (times four) pc-relative operand, at most expanded to 32 bits. */
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#define SH64PCREL16_32 4
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/* A 16-bit (times four) pc-relative operand, at most expanded to 64 bits. */
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#define SH64PCREL16_64 5
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/* Variants of the above for adjusting the insn to PTA or PTB according to
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the label. */
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#define SH64PCREL16PT_32 6
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||
#define SH64PCREL16PT_64 7
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||
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||
/* A MOVI expansion, expanding to at most 32 or 64 bits. */
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#define MOVI_IMM_32 8
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#define MOVI_IMM_32_PCREL 9
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#define MOVI_IMM_64 10
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#define MOVI_IMM_64_PCREL 11
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#define END 12
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#else /* HAVE_SH64 */
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#define END 4
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#endif /* HAVE_SH64 */
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#define UNDEF_DISP 0
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#define COND8 1
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||
#define COND12 2
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#define COND32 3
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#define UNDEF_WORD_DISP 4
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#define UNCOND12 1
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#define UNCOND32 2
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||
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#ifdef HAVE_SH64
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#define UNDEF_SH64PCREL 0
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#define SH64PCREL16 1
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#define SH64PCREL32 2
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#define SH64PCREL48 3
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#define SH64PCREL64 4
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#define SH64PCRELPLT 5
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#define UNDEF_MOVI 0
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#define MOVI_16 1
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#define MOVI_32 2
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#define MOVI_48 3
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#define MOVI_64 4
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#define MOVI_PLT 5
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#define MOVI_GOTOFF 6
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#define MOVI_GOTPC 7
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#endif /* HAVE_SH64 */
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/* Branch displacements are from the address of the branch plus
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four, thus all minimum and maximum values have 4 added to them. */
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#define COND8_F 258
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#define COND8_M -252
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#define COND8_LENGTH 2
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/* There is one extra instruction before the branch, so we must add
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two more bytes to account for it. */
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#define COND12_F 4100
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#define COND12_M -4090
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#define COND12_LENGTH 6
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#define COND12_DELAY_LENGTH 4
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/* ??? The minimum and maximum values are wrong, but this does not matter
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since this relocation type is not supported yet. */
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#define COND32_F (1<<30)
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#define COND32_M -(1<<30)
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#define COND32_LENGTH 14
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#define UNCOND12_F 4098
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#define UNCOND12_M -4092
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#define UNCOND12_LENGTH 2
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/* ??? The minimum and maximum values are wrong, but this does not matter
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since this relocation type is not supported yet. */
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#define UNCOND32_F (1<<30)
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#define UNCOND32_M -(1<<30)
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#define UNCOND32_LENGTH 14
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#ifdef HAVE_SH64
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/* The trivial expansion of a SH64PCREL16 relaxation is just a "PT label,
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TRd" as is the current insn, so no extra length. Note that the "reach"
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is calculated from the address *after* that insn, but the offset in the
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insn is calculated from the beginning of the insn. We also need to
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take into account the implicit 1 coded as the "A" in PTA when counting
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forward. If PTB reaches an odd address, we trap that as an error
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elsewhere, so we don't have to have different relaxation entries. We
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don't add a one to the negative range, since PTB would then have the
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farthest backward-reaching value skipped, not generated at relaxation. */
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#define SH64PCREL16_F (32767 * 4 - 4 + 1)
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#define SH64PCREL16_M (-32768 * 4 - 4)
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#define SH64PCREL16_LENGTH 0
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/* The next step is to change that PT insn into
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MOVI ((label - datalabel Ln) >> 16) & 65535, R25
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SHORI (label - datalabel Ln) & 65535, R25
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Ln:
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PTREL R25,TRd
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which means two extra insns, 8 extra bytes. This is the limit for the
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32-bit ABI.
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The expressions look a bit bad since we have to adjust this to avoid overflow on a
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32-bit host. */
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#define SH64PCREL32_F ((((long) 1 << 30) - 1) * 2 + 1 - 4)
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#define SH64PCREL32_LENGTH (2 * 4)
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|
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/* Similarly, we just change the MOVI and add a SHORI for the 48-bit
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expansion. */
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#if BFD_HOST_64BIT_LONG
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/* The "reach" type is long, so we can only do this for a 64-bit-long
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host. */
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#define SH64PCREL32_M (((long) -1 << 30) * 2 - 4)
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#define SH64PCREL48_F ((((long) 1 << 47) - 1) - 4)
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#define SH64PCREL48_M (((long) -1 << 47) - 4)
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#define SH64PCREL48_LENGTH (3 * 4)
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#else
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||
/* If the host does not have 64-bit longs, just make this state identical
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in reach to the 32-bit state. Note that we have a slightly incorrect
|
||
reach, but the correct one above will overflow a 32-bit number. */
|
||
#define SH64PCREL32_M (((long) -1 << 30) * 2)
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#define SH64PCREL48_F SH64PCREL32_F
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#define SH64PCREL48_M SH64PCREL32_M
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||
#define SH64PCREL48_LENGTH (3 * 4)
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#endif /* BFD_HOST_64BIT_LONG */
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||
|
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/* And similarly for the 64-bit expansion; a MOVI + SHORI + SHORI + SHORI
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||
+ PTREL sequence. */
|
||
#define SH64PCREL64_LENGTH (4 * 4)
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||
|
||
/* For MOVI, we make the MOVI + SHORI... expansion you can see in the
|
||
SH64PCREL expansions. The PCREL one is similar, but the other has no
|
||
pc-relative reach; it must be fully expanded in
|
||
shmedia_md_estimate_size_before_relax. */
|
||
#define MOVI_16_LENGTH 0
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||
#define MOVI_16_F (32767 - 4)
|
||
#define MOVI_16_M (-32768 - 4)
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||
#define MOVI_32_LENGTH 4
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||
#define MOVI_32_F ((((long) 1 << 30) - 1) * 2 + 1 - 4)
|
||
#define MOVI_48_LENGTH 8
|
||
|
||
#if BFD_HOST_64BIT_LONG
|
||
/* The "reach" type is long, so we can only do this for a 64-bit-long
|
||
host. */
|
||
#define MOVI_32_M (((long) -1 << 30) * 2 - 4)
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||
#define MOVI_48_F ((((long) 1 << 47) - 1) - 4)
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||
#define MOVI_48_M (((long) -1 << 47) - 4)
|
||
#else
|
||
/* If the host does not have 64-bit longs, just make this state identical
|
||
in reach to the 32-bit state. Note that we have a slightly incorrect
|
||
reach, but the correct one above will overflow a 32-bit number. */
|
||
#define MOVI_32_M (((long) -1 << 30) * 2)
|
||
#define MOVI_48_F MOVI_32_F
|
||
#define MOVI_48_M MOVI_32_M
|
||
#endif /* BFD_HOST_64BIT_LONG */
|
||
|
||
#define MOVI_64_LENGTH 12
|
||
#endif /* HAVE_SH64 */
|
||
|
||
#define EMPTY { 0, 0, 0, 0 }
|
||
|
||
const relax_typeS md_relax_table[C (END, 0)] = {
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
EMPTY,
|
||
/* C (COND_JUMP, COND8) */
|
||
{ COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP, COND12) },
|
||
/* C (COND_JUMP, COND12) */
|
||
{ COND12_F, COND12_M, COND12_LENGTH, C (COND_JUMP, COND32), },
|
||
/* C (COND_JUMP, COND32) */
|
||
{ COND32_F, COND32_M, COND32_LENGTH, 0, },
|
||
/* C (COND_JUMP, UNDEF_WORD_DISP) */
|
||
{ 0, 0, COND32_LENGTH, 0, },
|
||
EMPTY, EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
EMPTY,
|
||
/* C (COND_JUMP_DELAY, COND8) */
|
||
{ COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP_DELAY, COND12) },
|
||
/* C (COND_JUMP_DELAY, COND12) */
|
||
{ COND12_F, COND12_M, COND12_DELAY_LENGTH, C (COND_JUMP_DELAY, COND32), },
|
||
/* C (COND_JUMP_DELAY, COND32) */
|
||
{ COND32_F, COND32_M, COND32_LENGTH, 0, },
|
||
/* C (COND_JUMP_DELAY, UNDEF_WORD_DISP) */
|
||
{ 0, 0, COND32_LENGTH, 0, },
|
||
EMPTY, EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
EMPTY,
|
||
/* C (UNCOND_JUMP, UNCOND12) */
|
||
{ UNCOND12_F, UNCOND12_M, UNCOND12_LENGTH, C (UNCOND_JUMP, UNCOND32), },
|
||
/* C (UNCOND_JUMP, UNCOND32) */
|
||
{ UNCOND32_F, UNCOND32_M, UNCOND32_LENGTH, 0, },
|
||
EMPTY,
|
||
/* C (UNCOND_JUMP, UNDEF_WORD_DISP) */
|
||
{ 0, 0, UNCOND32_LENGTH, 0, },
|
||
EMPTY, EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
#ifdef HAVE_SH64
|
||
/* C (SH64PCREL16_32, SH64PCREL16) */
|
||
EMPTY,
|
||
{ SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16_32, SH64PCREL32) },
|
||
/* C (SH64PCREL16_32, SH64PCREL32) */
|
||
{ 0, 0, SH64PCREL32_LENGTH, 0 },
|
||
EMPTY, EMPTY,
|
||
/* C (SH64PCREL16_32, SH64PCRELPLT) */
|
||
{ 0, 0, SH64PCREL32_LENGTH, 0 },
|
||
EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (SH64PCREL16_64, SH64PCREL16) */
|
||
EMPTY,
|
||
{ SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16_64, SH64PCREL32) },
|
||
/* C (SH64PCREL16_64, SH64PCREL32) */
|
||
{ SH64PCREL32_F, SH64PCREL32_M, SH64PCREL32_LENGTH, C (SH64PCREL16_64, SH64PCREL48) },
|
||
/* C (SH64PCREL16_64, SH64PCREL48) */
|
||
{ SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, C (SH64PCREL16_64, SH64PCREL64) },
|
||
/* C (SH64PCREL16_64, SH64PCREL64) */
|
||
{ 0, 0, SH64PCREL64_LENGTH, 0 },
|
||
/* C (SH64PCREL16_64, SH64PCRELPLT) */
|
||
{ 0, 0, SH64PCREL64_LENGTH, 0 },
|
||
EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (SH64PCREL16PT_32, SH64PCREL16) */
|
||
EMPTY,
|
||
{ SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16PT_32, SH64PCREL32) },
|
||
/* C (SH64PCREL16PT_32, SH64PCREL32) */
|
||
{ 0, 0, SH64PCREL32_LENGTH, 0 },
|
||
EMPTY, EMPTY,
|
||
/* C (SH64PCREL16PT_32, SH64PCRELPLT) */
|
||
{ 0, 0, SH64PCREL32_LENGTH, 0 },
|
||
EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (SH64PCREL16PT_64, SH64PCREL16) */
|
||
EMPTY,
|
||
{ SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16PT_64, SH64PCREL32) },
|
||
/* C (SH64PCREL16PT_64, SH64PCREL32) */
|
||
{ SH64PCREL32_F,
|
||
SH64PCREL32_M,
|
||
SH64PCREL32_LENGTH,
|
||
C (SH64PCREL16PT_64, SH64PCREL48) },
|
||
/* C (SH64PCREL16PT_64, SH64PCREL48) */
|
||
{ SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, C (SH64PCREL16PT_64, SH64PCREL64) },
|
||
/* C (SH64PCREL16PT_64, SH64PCREL64) */
|
||
{ 0, 0, SH64PCREL64_LENGTH, 0 },
|
||
/* C (SH64PCREL16PT_64, SH64PCRELPLT) */
|
||
{ 0, 0, SH64PCREL64_LENGTH, 0},
|
||
EMPTY, EMPTY,
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (MOVI_IMM_32, UNDEF_MOVI) */
|
||
{ 0, 0, MOVI_32_LENGTH, 0 },
|
||
/* C (MOVI_IMM_32, MOVI_16) */
|
||
{ MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_32, MOVI_32) },
|
||
/* C (MOVI_IMM_32, MOVI_32) */
|
||
{ MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, 0 },
|
||
EMPTY, EMPTY, EMPTY,
|
||
/* C (MOVI_IMM_32, MOVI_GOTOFF) */
|
||
{ 0, 0, MOVI_32_LENGTH, 0 },
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (MOVI_IMM_32_PCREL, MOVI_16) */
|
||
EMPTY,
|
||
{ MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_32_PCREL, MOVI_32) },
|
||
/* C (MOVI_IMM_32_PCREL, MOVI_32) */
|
||
{ 0, 0, MOVI_32_LENGTH, 0 },
|
||
EMPTY, EMPTY,
|
||
/* C (MOVI_IMM_32_PCREL, MOVI_PLT) */
|
||
{ 0, 0, MOVI_32_LENGTH, 0 },
|
||
EMPTY,
|
||
/* C (MOVI_IMM_32_PCREL, MOVI_GOTPC) */
|
||
{ 0, 0, MOVI_32_LENGTH, 0 },
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (MOVI_IMM_64, UNDEF_MOVI) */
|
||
{ 0, 0, MOVI_64_LENGTH, 0 },
|
||
/* C (MOVI_IMM_64, MOVI_16) */
|
||
{ MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_64, MOVI_32) },
|
||
/* C (MOVI_IMM_64, MOVI_32) */
|
||
{ MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, C (MOVI_IMM_64, MOVI_48) },
|
||
/* C (MOVI_IMM_64, MOVI_48) */
|
||
{ MOVI_48_F, MOVI_48_M, MOVI_48_LENGTH, C (MOVI_IMM_64, MOVI_64) },
|
||
/* C (MOVI_IMM_64, MOVI_64) */
|
||
{ 0, 0, MOVI_64_LENGTH, 0 },
|
||
EMPTY,
|
||
/* C (MOVI_IMM_64, MOVI_GOTOFF) */
|
||
{ 0, 0, MOVI_64_LENGTH, 0 },
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
/* C (MOVI_IMM_64_PCREL, MOVI_16) */
|
||
EMPTY,
|
||
{ MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_32) },
|
||
/* C (MOVI_IMM_64_PCREL, MOVI_32) */
|
||
{ MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_48) },
|
||
/* C (MOVI_IMM_64_PCREL, MOVI_48) */
|
||
{ MOVI_48_F, MOVI_48_M, MOVI_48_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_64) },
|
||
/* C (MOVI_IMM_64_PCREL, MOVI_64) */
|
||
{ 0, 0, MOVI_64_LENGTH, 0 },
|
||
/* C (MOVI_IMM_64_PCREL, MOVI_PLT) */
|
||
{ 0, 0, MOVI_64_LENGTH, 0 },
|
||
EMPTY,
|
||
/* C (MOVI_IMM_64_PCREL, MOVI_GOTPC) */
|
||
{ 0, 0, MOVI_64_LENGTH, 0 },
|
||
EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
|
||
|
||
#endif /* HAVE_SH64 */
|
||
|
||
};
|
||
|
||
#undef EMPTY
|
||
|
||
static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
|
||
|
||
|
||
#ifdef OBJ_ELF
|
||
/* Determinet whether the symbol needs any kind of PIC relocation. */
|
||
|
||
inline static int
|
||
sh_PIC_related_p (sym)
|
||
symbolS *sym;
|
||
{
|
||
expressionS *exp;
|
||
|
||
if (! sym)
|
||
return 0;
|
||
|
||
if (sym == GOT_symbol)
|
||
return 1;
|
||
|
||
#ifdef HAVE_SH64
|
||
if (sh_PIC_related_p (*symbol_get_tc (sym)))
|
||
return 1;
|
||
#endif
|
||
|
||
exp = symbol_get_value_expression (sym);
|
||
|
||
return (exp->X_op == O_PIC_reloc
|
||
|| sh_PIC_related_p (exp->X_add_symbol)
|
||
|| sh_PIC_related_p (exp->X_op_symbol));
|
||
}
|
||
|
||
/* Determine the relocation type to be used to represent the
|
||
expression, that may be rearranged. */
|
||
|
||
static int
|
||
sh_check_fixup (main_exp, r_type_p)
|
||
expressionS *main_exp;
|
||
bfd_reloc_code_real_type *r_type_p;
|
||
{
|
||
expressionS *exp = main_exp;
|
||
|
||
/* This is here for backward-compatibility only. GCC used to generated:
|
||
|
||
f@PLT + . - (.LPCS# + 2)
|
||
|
||
but we'd rather be able to handle this as a PIC-related reference
|
||
plus/minus a symbol. However, gas' parser gives us:
|
||
|
||
O_subtract (O_add (f@PLT, .), .LPCS#+2)
|
||
|
||
so we attempt to transform this into:
|
||
|
||
O_subtract (f@PLT, O_subtract (.LPCS#+2, .))
|
||
|
||
which we can handle simply below. */
|
||
if (exp->X_op == O_subtract)
|
||
{
|
||
if (sh_PIC_related_p (exp->X_op_symbol))
|
||
return 1;
|
||
|
||
exp = symbol_get_value_expression (exp->X_add_symbol);
|
||
|
||
if (exp && sh_PIC_related_p (exp->X_op_symbol))
|
||
return 1;
|
||
|
||
if (exp && exp->X_op == O_add
|
||
&& sh_PIC_related_p (exp->X_add_symbol))
|
||
{
|
||
symbolS *sym = exp->X_add_symbol;
|
||
|
||
exp->X_op = O_subtract;
|
||
exp->X_add_symbol = main_exp->X_op_symbol;
|
||
|
||
main_exp->X_op_symbol = main_exp->X_add_symbol;
|
||
main_exp->X_add_symbol = sym;
|
||
|
||
main_exp->X_add_number += exp->X_add_number;
|
||
exp->X_add_number = 0;
|
||
}
|
||
|
||
exp = main_exp;
|
||
}
|
||
else if (exp->X_op == O_add && sh_PIC_related_p (exp->X_op_symbol))
|
||
return 1;
|
||
|
||
if (exp->X_op == O_symbol || exp->X_op == O_add || exp->X_op == O_subtract)
|
||
{
|
||
#ifdef HAVE_SH64
|
||
if (exp->X_add_symbol
|
||
&& (exp->X_add_symbol == GOT_symbol
|
||
|| (GOT_symbol
|
||
&& *symbol_get_tc (exp->X_add_symbol) == GOT_symbol)))
|
||
{
|
||
switch (*r_type_p)
|
||
{
|
||
case BFD_RELOC_SH_IMM_LOW16:
|
||
*r_type_p = BFD_RELOC_SH_GOTPC_LOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_MEDLOW16:
|
||
*r_type_p = BFD_RELOC_SH_GOTPC_MEDLOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_MEDHI16:
|
||
*r_type_p = BFD_RELOC_SH_GOTPC_MEDHI16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_HI16:
|
||
*r_type_p = BFD_RELOC_SH_GOTPC_HI16;
|
||
break;
|
||
|
||
case BFD_RELOC_NONE:
|
||
case BFD_RELOC_UNUSED:
|
||
*r_type_p = BFD_RELOC_SH_GOTPC;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
return 0;
|
||
}
|
||
#else
|
||
if (exp->X_add_symbol && exp->X_add_symbol == GOT_symbol)
|
||
{
|
||
*r_type_p = BFD_RELOC_SH_GOTPC;
|
||
return 0;
|
||
}
|
||
#endif
|
||
exp = symbol_get_value_expression (exp->X_add_symbol);
|
||
if (! exp)
|
||
return 0;
|
||
}
|
||
|
||
if (exp->X_op == O_PIC_reloc)
|
||
{
|
||
#ifdef HAVE_SH64
|
||
switch (*r_type_p)
|
||
{
|
||
case BFD_RELOC_NONE:
|
||
case BFD_RELOC_UNUSED:
|
||
*r_type_p = exp->X_md;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_LOW16:
|
||
switch (exp->X_md)
|
||
{
|
||
case BFD_RELOC_32_GOTOFF:
|
||
*r_type_p = BFD_RELOC_SH_GOTOFF_LOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_GOTPLT32:
|
||
*r_type_p = BFD_RELOC_SH_GOTPLT_LOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_GOT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_GOT_LOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_PLT_LOW16;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_MEDLOW16:
|
||
switch (exp->X_md)
|
||
{
|
||
case BFD_RELOC_32_GOTOFF:
|
||
*r_type_p = BFD_RELOC_SH_GOTOFF_MEDLOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_GOTPLT32:
|
||
*r_type_p = BFD_RELOC_SH_GOTPLT_MEDLOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_GOT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_GOT_MEDLOW16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_PLT_MEDLOW16;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_MEDHI16:
|
||
switch (exp->X_md)
|
||
{
|
||
case BFD_RELOC_32_GOTOFF:
|
||
*r_type_p = BFD_RELOC_SH_GOTOFF_MEDHI16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_GOTPLT32:
|
||
*r_type_p = BFD_RELOC_SH_GOTPLT_MEDHI16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_GOT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_GOT_MEDHI16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_PLT_MEDHI16;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM_HI16:
|
||
switch (exp->X_md)
|
||
{
|
||
case BFD_RELOC_32_GOTOFF:
|
||
*r_type_p = BFD_RELOC_SH_GOTOFF_HI16;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_GOTPLT32:
|
||
*r_type_p = BFD_RELOC_SH_GOTPLT_HI16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_GOT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_GOT_HI16;
|
||
break;
|
||
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
*r_type_p = BFD_RELOC_SH_PLT_HI16;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
#else
|
||
*r_type_p = exp->X_md;
|
||
#endif
|
||
if (exp == main_exp)
|
||
exp->X_op = O_symbol;
|
||
else
|
||
{
|
||
main_exp->X_add_symbol = exp->X_add_symbol;
|
||
main_exp->X_add_number += exp->X_add_number;
|
||
}
|
||
}
|
||
else
|
||
return (sh_PIC_related_p (exp->X_add_symbol)
|
||
|| sh_PIC_related_p (exp->X_op_symbol));
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Add expression EXP of SIZE bytes to offset OFF of fragment FRAG. */
|
||
|
||
void
|
||
sh_cons_fix_new (frag, off, size, exp)
|
||
fragS *frag;
|
||
int off, size;
|
||
expressionS *exp;
|
||
{
|
||
bfd_reloc_code_real_type r_type = BFD_RELOC_UNUSED;
|
||
|
||
if (sh_check_fixup (exp, &r_type))
|
||
as_bad (_("Invalid PIC expression."));
|
||
|
||
if (r_type == BFD_RELOC_UNUSED)
|
||
switch (size)
|
||
{
|
||
case 1:
|
||
r_type = BFD_RELOC_8;
|
||
break;
|
||
|
||
case 2:
|
||
r_type = BFD_RELOC_16;
|
||
break;
|
||
|
||
case 4:
|
||
r_type = BFD_RELOC_32;
|
||
break;
|
||
|
||
#ifdef HAVE_SH64
|
||
case 8:
|
||
r_type = BFD_RELOC_64;
|
||
break;
|
||
#endif
|
||
|
||
default:
|
||
goto error;
|
||
}
|
||
else if (size != 4)
|
||
{
|
||
error:
|
||
as_bad (_("unsupported BFD relocation size %u"), size);
|
||
r_type = BFD_RELOC_UNUSED;
|
||
}
|
||
|
||
fix_new_exp (frag, off, size, exp, 0, r_type);
|
||
}
|
||
|
||
/* The regular cons() function, that reads constants, doesn't support
|
||
suffixes such as @GOT, @GOTOFF and @PLT, that generate
|
||
machine-specific relocation types. So we must define it here. */
|
||
/* Clobbers input_line_pointer, checks end-of-line. */
|
||
static void
|
||
sh_elf_cons (nbytes)
|
||
register int nbytes; /* 1=.byte, 2=.word, 4=.long */
|
||
{
|
||
expressionS exp;
|
||
|
||
#ifdef HAVE_SH64
|
||
|
||
/* Update existing range to include a previous insn, if there was one. */
|
||
sh64_update_contents_mark (true);
|
||
|
||
/* We need to make sure the contents type is set to data. */
|
||
sh64_flag_output ();
|
||
|
||
#endif /* HAVE_SH64 */
|
||
|
||
if (is_it_end_of_statement ())
|
||
{
|
||
demand_empty_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
do
|
||
{
|
||
expression (&exp);
|
||
emit_expr (&exp, (unsigned int) nbytes);
|
||
}
|
||
while (*input_line_pointer++ == ',');
|
||
|
||
input_line_pointer--; /* Put terminator back into stream. */
|
||
if (*input_line_pointer == '#' || *input_line_pointer == '!')
|
||
{
|
||
while (! is_end_of_line[(unsigned char) *input_line_pointer++]);
|
||
}
|
||
else
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
#endif /* OBJ_ELF */
|
||
|
||
|
||
/* This function is called once, at assembler startup time. This should
|
||
set up all the tables, etc that the MD part of the assembler needs. */
|
||
|
||
void
|
||
md_begin ()
|
||
{
|
||
sh_opcode_info *opcode;
|
||
char *prev_name = "";
|
||
int target_arch;
|
||
|
||
target_arch = arch_sh1_up & ~(sh_dsp ? arch_sh3e_up : arch_sh_dsp_up);
|
||
valid_arch = target_arch;
|
||
|
||
#ifdef HAVE_SH64
|
||
shmedia_md_begin ();
|
||
#endif
|
||
|
||
opcode_hash_control = hash_new ();
|
||
|
||
/* Insert unique names into hash table. */
|
||
for (opcode = sh_table; opcode->name; opcode++)
|
||
{
|
||
if (strcmp (prev_name, opcode->name))
|
||
{
|
||
if (! (opcode->arch & target_arch))
|
||
continue;
|
||
prev_name = opcode->name;
|
||
hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
|
||
}
|
||
else
|
||
{
|
||
/* Make all the opcodes with the same name point to the same
|
||
string. */
|
||
opcode->name = prev_name;
|
||
}
|
||
}
|
||
}
|
||
|
||
static int reg_m;
|
||
static int reg_n;
|
||
static int reg_x, reg_y;
|
||
static int reg_efg;
|
||
static int reg_b;
|
||
|
||
#define IDENT_CHAR(c) (ISALNUM (c) || (c) == '_')
|
||
|
||
/* Try to parse a reg name. Return the number of chars consumed. */
|
||
|
||
static int
|
||
parse_reg (src, mode, reg)
|
||
char *src;
|
||
int *mode;
|
||
int *reg;
|
||
{
|
||
char l0 = TOLOWER (src[0]);
|
||
char l1 = l0 ? TOLOWER (src[1]) : 0;
|
||
|
||
/* We use ! IDENT_CHAR for the next character after the register name, to
|
||
make sure that we won't accidentally recognize a symbol name such as
|
||
'sram' or sr_ram as being a reference to the register 'sr'. */
|
||
|
||
if (l0 == 'r')
|
||
{
|
||
if (l1 == '1')
|
||
{
|
||
if (src[2] >= '0' && src[2] <= '5'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 10 + src[2] - '0';
|
||
return 3;
|
||
}
|
||
}
|
||
if (l1 >= '0' && l1 <= '9'
|
||
&& ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = (l1 - '0');
|
||
return 2;
|
||
}
|
||
if (l1 >= '0' && l1 <= '7' && strncasecmp (&src[2], "_bank", 5) == 0
|
||
&& ! IDENT_CHAR ((unsigned char) src[7]))
|
||
{
|
||
*mode = A_REG_B;
|
||
*reg = (l1 - '0');
|
||
return 7;
|
||
}
|
||
|
||
if (l1 == 'e' && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = A_RE;
|
||
return 2;
|
||
}
|
||
if (l1 == 's' && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = A_RS;
|
||
return 2;
|
||
}
|
||
}
|
||
|
||
if (l0 == 'a')
|
||
{
|
||
if (l1 == '0')
|
||
{
|
||
if (! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = A_A0_NUM;
|
||
return 2;
|
||
}
|
||
if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = A_A0G_NUM;
|
||
return 3;
|
||
}
|
||
}
|
||
if (l1 == '1')
|
||
{
|
||
if (! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = A_A1_NUM;
|
||
return 2;
|
||
}
|
||
if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = A_A1G_NUM;
|
||
return 3;
|
||
}
|
||
}
|
||
|
||
if (l1 == 'x' && src[2] >= '0' && src[2] <= '1'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 4 + (l1 - '0');
|
||
return 3;
|
||
}
|
||
if (l1 == 'y' && src[2] >= '0' && src[2] <= '1'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 6 + (l1 - '0');
|
||
return 3;
|
||
}
|
||
if (l1 == 's' && src[2] >= '0' && src[2] <= '3'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
int n = l1 - '0';
|
||
|
||
*mode = A_REG_N;
|
||
*reg = n | ((~n & 2) << 1);
|
||
return 3;
|
||
}
|
||
}
|
||
|
||
if (l0 == 'i' && l1 && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
if (l1 == 's')
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 8;
|
||
return 2;
|
||
}
|
||
if (l1 == 'x')
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 8;
|
||
return 2;
|
||
}
|
||
if (l1 == 'y')
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 9;
|
||
return 2;
|
||
}
|
||
}
|
||
|
||
if (l0 == 'x' && l1 >= '0' && l1 <= '1'
|
||
&& ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = A_X0_NUM + l1 - '0';
|
||
return 2;
|
||
}
|
||
|
||
if (l0 == 'y' && l1 >= '0' && l1 <= '1'
|
||
&& ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = A_Y0_NUM + l1 - '0';
|
||
return 2;
|
||
}
|
||
|
||
if (l0 == 'm' && l1 >= '0' && l1 <= '1'
|
||
&& ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = DSP_REG_N;
|
||
*reg = l1 == '0' ? A_M0_NUM : A_M1_NUM;
|
||
return 2;
|
||
}
|
||
|
||
if (l0 == 's'
|
||
&& l1 == 's'
|
||
&& TOLOWER (src[2]) == 'r' && ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_SSR;
|
||
return 3;
|
||
}
|
||
|
||
if (l0 == 's' && l1 == 'p' && TOLOWER (src[2]) == 'c'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_SPC;
|
||
return 3;
|
||
}
|
||
|
||
if (l0 == 's' && l1 == 'g' && TOLOWER (src[2]) == 'r'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_SGR;
|
||
return 3;
|
||
}
|
||
|
||
if (l0 == 'd' && l1 == 's' && TOLOWER (src[2]) == 'r'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_DSR;
|
||
return 3;
|
||
}
|
||
|
||
if (l0 == 'd' && l1 == 'b' && TOLOWER (src[2]) == 'r'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_DBR;
|
||
return 3;
|
||
}
|
||
|
||
if (l0 == 's' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = A_SR;
|
||
return 2;
|
||
}
|
||
|
||
if (l0 == 's' && l1 == 'p' && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = A_REG_N;
|
||
*reg = 15;
|
||
return 2;
|
||
}
|
||
|
||
if (l0 == 'p' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
*mode = A_PR;
|
||
return 2;
|
||
}
|
||
if (l0 == 'p' && l1 == 'c' && ! IDENT_CHAR ((unsigned char) src[2]))
|
||
{
|
||
/* Don't use A_DISP_PC here - that would accept stuff like 'mova pc,r0'
|
||
and use an uninitialized immediate. */
|
||
*mode = A_PC;
|
||
return 2;
|
||
}
|
||
if (l0 == 'g' && l1 == 'b' && TOLOWER (src[2]) == 'r'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_GBR;
|
||
return 3;
|
||
}
|
||
if (l0 == 'v' && l1 == 'b' && TOLOWER (src[2]) == 'r'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_VBR;
|
||
return 3;
|
||
}
|
||
|
||
if (l0 == 'm' && l1 == 'a' && TOLOWER (src[2]) == 'c'
|
||
&& ! IDENT_CHAR ((unsigned char) src[4]))
|
||
{
|
||
if (TOLOWER (src[3]) == 'l')
|
||
{
|
||
*mode = A_MACL;
|
||
return 4;
|
||
}
|
||
if (TOLOWER (src[3]) == 'h')
|
||
{
|
||
*mode = A_MACH;
|
||
return 4;
|
||
}
|
||
}
|
||
if (l0 == 'm' && l1 == 'o' && TOLOWER (src[2]) == 'd'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = A_MOD;
|
||
return 3;
|
||
}
|
||
if (l0 == 'f' && l1 == 'r')
|
||
{
|
||
if (src[2] == '1')
|
||
{
|
||
if (src[3] >= '0' && src[3] <= '5'
|
||
&& ! IDENT_CHAR ((unsigned char) src[4]))
|
||
{
|
||
*mode = F_REG_N;
|
||
*reg = 10 + src[3] - '0';
|
||
return 4;
|
||
}
|
||
}
|
||
if (src[2] >= '0' && src[2] <= '9'
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = F_REG_N;
|
||
*reg = (src[2] - '0');
|
||
return 3;
|
||
}
|
||
}
|
||
if (l0 == 'd' && l1 == 'r')
|
||
{
|
||
if (src[2] == '1')
|
||
{
|
||
if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1)
|
||
&& ! IDENT_CHAR ((unsigned char) src[4]))
|
||
{
|
||
*mode = D_REG_N;
|
||
*reg = 10 + src[3] - '0';
|
||
return 4;
|
||
}
|
||
}
|
||
if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1)
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = D_REG_N;
|
||
*reg = (src[2] - '0');
|
||
return 3;
|
||
}
|
||
}
|
||
if (l0 == 'x' && l1 == 'd')
|
||
{
|
||
if (src[2] == '1')
|
||
{
|
||
if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1)
|
||
&& ! IDENT_CHAR ((unsigned char) src[4]))
|
||
{
|
||
*mode = X_REG_N;
|
||
*reg = 11 + src[3] - '0';
|
||
return 4;
|
||
}
|
||
}
|
||
if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1)
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = X_REG_N;
|
||
*reg = (src[2] - '0') + 1;
|
||
return 3;
|
||
}
|
||
}
|
||
if (l0 == 'f' && l1 == 'v')
|
||
{
|
||
if (src[2] == '1'&& src[3] == '2' && ! IDENT_CHAR ((unsigned char) src[4]))
|
||
{
|
||
*mode = V_REG_N;
|
||
*reg = 12;
|
||
return 4;
|
||
}
|
||
if ((src[2] == '0' || src[2] == '4' || src[2] == '8')
|
||
&& ! IDENT_CHAR ((unsigned char) src[3]))
|
||
{
|
||
*mode = V_REG_N;
|
||
*reg = (src[2] - '0');
|
||
return 3;
|
||
}
|
||
}
|
||
if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 'u'
|
||
&& TOLOWER (src[3]) == 'l'
|
||
&& ! IDENT_CHAR ((unsigned char) src[4]))
|
||
{
|
||
*mode = FPUL_N;
|
||
return 4;
|
||
}
|
||
|
||
if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 's'
|
||
&& TOLOWER (src[3]) == 'c'
|
||
&& TOLOWER (src[4]) == 'r' && ! IDENT_CHAR ((unsigned char) src[5]))
|
||
{
|
||
*mode = FPSCR_N;
|
||
return 5;
|
||
}
|
||
|
||
if (l0 == 'x' && l1 == 'm' && TOLOWER (src[2]) == 't'
|
||
&& TOLOWER (src[3]) == 'r'
|
||
&& TOLOWER (src[4]) == 'x' && ! IDENT_CHAR ((unsigned char) src[5]))
|
||
{
|
||
*mode = XMTRX_M4;
|
||
return 5;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static char *
|
||
parse_exp (s, op)
|
||
char *s;
|
||
sh_operand_info *op;
|
||
{
|
||
char *save;
|
||
char *new;
|
||
|
||
save = input_line_pointer;
|
||
input_line_pointer = s;
|
||
expression (&op->immediate);
|
||
if (op->immediate.X_op == O_absent)
|
||
as_bad (_("missing operand"));
|
||
#ifdef OBJ_ELF
|
||
else if (op->immediate.X_op == O_PIC_reloc
|
||
|| sh_PIC_related_p (op->immediate.X_add_symbol)
|
||
|| sh_PIC_related_p (op->immediate.X_op_symbol))
|
||
as_bad (_("misplaced PIC operand"));
|
||
#endif
|
||
new = input_line_pointer;
|
||
input_line_pointer = save;
|
||
return new;
|
||
}
|
||
|
||
/* The many forms of operand:
|
||
|
||
Rn Register direct
|
||
@Rn Register indirect
|
||
@Rn+ Autoincrement
|
||
@-Rn Autodecrement
|
||
@(disp:4,Rn)
|
||
@(disp:8,GBR)
|
||
@(disp:8,PC)
|
||
|
||
@(R0,Rn)
|
||
@(R0,GBR)
|
||
|
||
disp:8
|
||
disp:12
|
||
#imm8
|
||
pr, gbr, vbr, macl, mach
|
||
*/
|
||
|
||
static char *
|
||
parse_at (src, op)
|
||
char *src;
|
||
sh_operand_info *op;
|
||
{
|
||
int len;
|
||
int mode;
|
||
src++;
|
||
if (src[0] == '-')
|
||
{
|
||
/* Must be predecrement. */
|
||
src++;
|
||
|
||
len = parse_reg (src, &mode, &(op->reg));
|
||
if (mode != A_REG_N)
|
||
as_bad (_("illegal register after @-"));
|
||
|
||
op->type = A_DEC_N;
|
||
src += len;
|
||
}
|
||
else if (src[0] == '(')
|
||
{
|
||
/* Could be @(disp, rn), @(disp, gbr), @(disp, pc), @(r0, gbr) or
|
||
@(r0, rn). */
|
||
src++;
|
||
len = parse_reg (src, &mode, &(op->reg));
|
||
if (len && mode == A_REG_N)
|
||
{
|
||
src += len;
|
||
if (op->reg != 0)
|
||
{
|
||
as_bad (_("must be @(r0,...)"));
|
||
}
|
||
if (src[0] == ',')
|
||
{
|
||
src++;
|
||
/* Now can be rn or gbr. */
|
||
len = parse_reg (src, &mode, &(op->reg));
|
||
}
|
||
else
|
||
{
|
||
len = 0;
|
||
}
|
||
if (len)
|
||
{
|
||
if (mode == A_GBR)
|
||
{
|
||
op->type = A_R0_GBR;
|
||
}
|
||
else if (mode == A_REG_N)
|
||
{
|
||
op->type = A_IND_R0_REG_N;
|
||
}
|
||
else
|
||
{
|
||
as_bad (_("syntax error in @(r0,...)"));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
as_bad (_("syntax error in @(r0...)"));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Must be an @(disp,.. thing). */
|
||
src = parse_exp (src, op);
|
||
if (src[0] == ',')
|
||
src++;
|
||
/* Now can be rn, gbr or pc. */
|
||
len = parse_reg (src, &mode, &op->reg);
|
||
if (len)
|
||
{
|
||
if (mode == A_REG_N)
|
||
{
|
||
op->type = A_DISP_REG_N;
|
||
}
|
||
else if (mode == A_GBR)
|
||
{
|
||
op->type = A_DISP_GBR;
|
||
}
|
||
else if (mode == A_PC)
|
||
{
|
||
/* We want @(expr, pc) to uniformly address . + expr,
|
||
no matter if expr is a constant, or a more complex
|
||
expression, e.g. sym-. or sym1-sym2.
|
||
However, we also used to accept @(sym,pc)
|
||
as adressing sym, i.e. meaning the same as plain sym.
|
||
Some existing code does use the @(sym,pc) syntax, so
|
||
we give it the old semantics for now, but warn about
|
||
its use, so that users have some time to fix their code.
|
||
|
||
Note that due to this backward compatibility hack,
|
||
we'll get unexpected results when @(offset, pc) is used,
|
||
and offset is a symbol that is set later to an an address
|
||
difference, or an external symbol that is set to an
|
||
address difference in another source file, so we want to
|
||
eventually remove it. */
|
||
if (op->immediate.X_op == O_symbol)
|
||
{
|
||
op->type = A_DISP_PC;
|
||
as_warn (_("Deprecated syntax."));
|
||
}
|
||
else
|
||
{
|
||
op->type = A_DISP_PC_ABS;
|
||
/* Such operands don't get corrected for PC==.+4, so
|
||
make the correction here. */
|
||
op->immediate.X_add_number -= 4;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
as_bad (_("syntax error in @(disp,[Rn, gbr, pc])"));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
as_bad (_("syntax error in @(disp,[Rn, gbr, pc])"));
|
||
}
|
||
}
|
||
src += len;
|
||
if (src[0] != ')')
|
||
as_bad (_("expecting )"));
|
||
else
|
||
src++;
|
||
}
|
||
else
|
||
{
|
||
src += parse_reg (src, &mode, &(op->reg));
|
||
if (mode != A_REG_N)
|
||
as_bad (_("illegal register after @"));
|
||
|
||
if (src[0] == '+')
|
||
{
|
||
char l0, l1;
|
||
|
||
src++;
|
||
l0 = TOLOWER (src[0]);
|
||
l1 = TOLOWER (src[1]);
|
||
|
||
if ((l0 == 'r' && l1 == '8')
|
||
|| (l0 == 'i' && (l1 == 'x' || l1 == 's')))
|
||
{
|
||
src += 2;
|
||
op->type = A_PMOD_N;
|
||
}
|
||
else if ( (l0 == 'r' && l1 == '9')
|
||
|| (l0 == 'i' && l1 == 'y'))
|
||
{
|
||
src += 2;
|
||
op->type = A_PMODY_N;
|
||
}
|
||
else
|
||
op->type = A_INC_N;
|
||
}
|
||
else
|
||
op->type = A_IND_N;
|
||
}
|
||
return src;
|
||
}
|
||
|
||
static void
|
||
get_operand (ptr, op)
|
||
char **ptr;
|
||
sh_operand_info *op;
|
||
{
|
||
char *src = *ptr;
|
||
int mode = -1;
|
||
unsigned int len;
|
||
|
||
if (src[0] == '#')
|
||
{
|
||
src++;
|
||
*ptr = parse_exp (src, op);
|
||
op->type = A_IMM;
|
||
return;
|
||
}
|
||
|
||
else if (src[0] == '@')
|
||
{
|
||
*ptr = parse_at (src, op);
|
||
return;
|
||
}
|
||
len = parse_reg (src, &mode, &(op->reg));
|
||
if (len)
|
||
{
|
||
*ptr = src + len;
|
||
op->type = mode;
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
/* Not a reg, the only thing left is a displacement. */
|
||
*ptr = parse_exp (src, op);
|
||
op->type = A_DISP_PC;
|
||
return;
|
||
}
|
||
}
|
||
|
||
static char *
|
||
get_operands (info, args, operand)
|
||
sh_opcode_info *info;
|
||
char *args;
|
||
sh_operand_info *operand;
|
||
{
|
||
char *ptr = args;
|
||
if (info->arg[0])
|
||
{
|
||
/* The pre-processor will eliminate whitespace in front of '@'
|
||
after the first argument; we may be called multiple times
|
||
from assemble_ppi, so don't insist on finding whitespace here. */
|
||
if (*ptr == ' ')
|
||
ptr++;
|
||
|
||
get_operand (&ptr, operand + 0);
|
||
if (info->arg[1])
|
||
{
|
||
if (*ptr == ',')
|
||
{
|
||
ptr++;
|
||
}
|
||
get_operand (&ptr, operand + 1);
|
||
/* ??? Hack: psha/pshl have a varying operand number depending on
|
||
the type of the first operand. We handle this by having the
|
||
three-operand version first and reducing the number of operands
|
||
parsed to two if we see that the first operand is an immediate.
|
||
This works because no insn with three operands has an immediate
|
||
as first operand. */
|
||
if (info->arg[2] && operand[0].type != A_IMM)
|
||
{
|
||
if (*ptr == ',')
|
||
{
|
||
ptr++;
|
||
}
|
||
get_operand (&ptr, operand + 2);
|
||
}
|
||
else
|
||
{
|
||
operand[2].type = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
operand[1].type = 0;
|
||
operand[2].type = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
operand[0].type = 0;
|
||
operand[1].type = 0;
|
||
operand[2].type = 0;
|
||
}
|
||
return ptr;
|
||
}
|
||
|
||
/* Passed a pointer to a list of opcodes which use different
|
||
addressing modes, return the opcode which matches the opcodes
|
||
provided. */
|
||
|
||
static sh_opcode_info *
|
||
get_specific (opcode, operands)
|
||
sh_opcode_info *opcode;
|
||
sh_operand_info *operands;
|
||
{
|
||
sh_opcode_info *this_try = opcode;
|
||
char *name = opcode->name;
|
||
int n = 0;
|
||
|
||
while (opcode->name)
|
||
{
|
||
this_try = opcode++;
|
||
if (this_try->name != name)
|
||
{
|
||
/* We've looked so far down the table that we've run out of
|
||
opcodes with the same name. */
|
||
return 0;
|
||
}
|
||
|
||
/* Look at both operands needed by the opcodes and provided by
|
||
the user - since an arg test will often fail on the same arg
|
||
again and again, we'll try and test the last failing arg the
|
||
first on each opcode try. */
|
||
for (n = 0; this_try->arg[n]; n++)
|
||
{
|
||
sh_operand_info *user = operands + n;
|
||
sh_arg_type arg = this_try->arg[n];
|
||
|
||
/* If this is a parallel insn check to see if both
|
||
parts have the same destination register. */
|
||
if ((n == 2) && (this_try->nibbles[0] == PPI))
|
||
{
|
||
static boolean bIsPPI = false;
|
||
static int nLastDestReg;
|
||
|
||
if (!bIsPPI)
|
||
{
|
||
bIsPPI = true;
|
||
nLastDestReg = user->reg;
|
||
}
|
||
else /* Second insn. */
|
||
{
|
||
if (nLastDestReg == user->reg)
|
||
as_warn (_("destination register is same for parallel insns"));
|
||
|
||
bIsPPI = false;
|
||
}
|
||
}
|
||
|
||
switch (arg)
|
||
{
|
||
case A_DISP_PC:
|
||
if (user->type == A_DISP_PC_ABS)
|
||
break;
|
||
/* Fall through. */
|
||
case A_IMM:
|
||
case A_BDISP12:
|
||
case A_BDISP8:
|
||
case A_DISP_GBR:
|
||
case A_MACH:
|
||
case A_PR:
|
||
case A_MACL:
|
||
if (user->type != arg)
|
||
goto fail;
|
||
break;
|
||
case A_R0:
|
||
/* opcode needs r0 */
|
||
if (user->type != A_REG_N || user->reg != 0)
|
||
goto fail;
|
||
break;
|
||
case A_R0_GBR:
|
||
if (user->type != A_R0_GBR || user->reg != 0)
|
||
goto fail;
|
||
break;
|
||
case F_FR0:
|
||
if (user->type != F_REG_N || user->reg != 0)
|
||
goto fail;
|
||
break;
|
||
|
||
case A_REG_N:
|
||
case A_INC_N:
|
||
case A_DEC_N:
|
||
case A_IND_N:
|
||
case A_IND_R0_REG_N:
|
||
case A_DISP_REG_N:
|
||
case F_REG_N:
|
||
case D_REG_N:
|
||
case X_REG_N:
|
||
case V_REG_N:
|
||
case FPUL_N:
|
||
case FPSCR_N:
|
||
case A_PMOD_N:
|
||
case A_PMODY_N:
|
||
case DSP_REG_N:
|
||
/* Opcode needs rn */
|
||
if (user->type != arg)
|
||
goto fail;
|
||
reg_n = user->reg;
|
||
break;
|
||
case DX_REG_N:
|
||
if (user->type != D_REG_N && user->type != X_REG_N)
|
||
goto fail;
|
||
reg_n = user->reg;
|
||
break;
|
||
case A_GBR:
|
||
case A_SR:
|
||
case A_VBR:
|
||
case A_DSR:
|
||
case A_MOD:
|
||
case A_RE:
|
||
case A_RS:
|
||
case A_SSR:
|
||
case A_SPC:
|
||
case A_SGR:
|
||
case A_DBR:
|
||
if (user->type != arg)
|
||
goto fail;
|
||
break;
|
||
|
||
case A_REG_B:
|
||
if (user->type != arg)
|
||
goto fail;
|
||
reg_b = user->reg;
|
||
break;
|
||
|
||
case A_REG_M:
|
||
case A_INC_M:
|
||
case A_DEC_M:
|
||
case A_IND_M:
|
||
case A_IND_R0_REG_M:
|
||
case A_DISP_REG_M:
|
||
case DSP_REG_M:
|
||
/* Opcode needs rn */
|
||
if (user->type != arg - A_REG_M + A_REG_N)
|
||
goto fail;
|
||
reg_m = user->reg;
|
||
break;
|
||
|
||
case DSP_REG_X:
|
||
if (user->type != DSP_REG_N)
|
||
goto fail;
|
||
switch (user->reg)
|
||
{
|
||
case A_X0_NUM:
|
||
reg_x = 0;
|
||
break;
|
||
case A_X1_NUM:
|
||
reg_x = 1;
|
||
break;
|
||
case A_A0_NUM:
|
||
reg_x = 2;
|
||
break;
|
||
case A_A1_NUM:
|
||
reg_x = 3;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
break;
|
||
|
||
case DSP_REG_Y:
|
||
if (user->type != DSP_REG_N)
|
||
goto fail;
|
||
switch (user->reg)
|
||
{
|
||
case A_Y0_NUM:
|
||
reg_y = 0;
|
||
break;
|
||
case A_Y1_NUM:
|
||
reg_y = 1;
|
||
break;
|
||
case A_M0_NUM:
|
||
reg_y = 2;
|
||
break;
|
||
case A_M1_NUM:
|
||
reg_y = 3;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
break;
|
||
|
||
case DSP_REG_E:
|
||
if (user->type != DSP_REG_N)
|
||
goto fail;
|
||
switch (user->reg)
|
||
{
|
||
case A_X0_NUM:
|
||
reg_efg = 0 << 10;
|
||
break;
|
||
case A_X1_NUM:
|
||
reg_efg = 1 << 10;
|
||
break;
|
||
case A_Y0_NUM:
|
||
reg_efg = 2 << 10;
|
||
break;
|
||
case A_A1_NUM:
|
||
reg_efg = 3 << 10;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
break;
|
||
|
||
case DSP_REG_F:
|
||
if (user->type != DSP_REG_N)
|
||
goto fail;
|
||
switch (user->reg)
|
||
{
|
||
case A_Y0_NUM:
|
||
reg_efg |= 0 << 8;
|
||
break;
|
||
case A_Y1_NUM:
|
||
reg_efg |= 1 << 8;
|
||
break;
|
||
case A_X0_NUM:
|
||
reg_efg |= 2 << 8;
|
||
break;
|
||
case A_A1_NUM:
|
||
reg_efg |= 3 << 8;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
break;
|
||
|
||
case DSP_REG_G:
|
||
if (user->type != DSP_REG_N)
|
||
goto fail;
|
||
switch (user->reg)
|
||
{
|
||
case A_M0_NUM:
|
||
reg_efg |= 0 << 2;
|
||
break;
|
||
case A_M1_NUM:
|
||
reg_efg |= 1 << 2;
|
||
break;
|
||
case A_A0_NUM:
|
||
reg_efg |= 2 << 2;
|
||
break;
|
||
case A_A1_NUM:
|
||
reg_efg |= 3 << 2;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
break;
|
||
|
||
case A_A0:
|
||
if (user->type != DSP_REG_N || user->reg != A_A0_NUM)
|
||
goto fail;
|
||
break;
|
||
case A_X0:
|
||
if (user->type != DSP_REG_N || user->reg != A_X0_NUM)
|
||
goto fail;
|
||
break;
|
||
case A_X1:
|
||
if (user->type != DSP_REG_N || user->reg != A_X1_NUM)
|
||
goto fail;
|
||
break;
|
||
case A_Y0:
|
||
if (user->type != DSP_REG_N || user->reg != A_Y0_NUM)
|
||
goto fail;
|
||
break;
|
||
case A_Y1:
|
||
if (user->type != DSP_REG_N || user->reg != A_Y1_NUM)
|
||
goto fail;
|
||
break;
|
||
|
||
case F_REG_M:
|
||
case D_REG_M:
|
||
case X_REG_M:
|
||
case V_REG_M:
|
||
case FPUL_M:
|
||
case FPSCR_M:
|
||
/* Opcode needs rn */
|
||
if (user->type != arg - F_REG_M + F_REG_N)
|
||
goto fail;
|
||
reg_m = user->reg;
|
||
break;
|
||
case DX_REG_M:
|
||
if (user->type != D_REG_N && user->type != X_REG_N)
|
||
goto fail;
|
||
reg_m = user->reg;
|
||
break;
|
||
case XMTRX_M4:
|
||
if (user->type != XMTRX_M4)
|
||
goto fail;
|
||
reg_m = 4;
|
||
break;
|
||
|
||
default:
|
||
printf (_("unhandled %d\n"), arg);
|
||
goto fail;
|
||
}
|
||
}
|
||
if ( !(valid_arch & this_try->arch))
|
||
goto fail;
|
||
valid_arch &= this_try->arch;
|
||
return this_try;
|
||
fail:
|
||
;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
insert (where, how, pcrel, op)
|
||
char *where;
|
||
int how;
|
||
int pcrel;
|
||
sh_operand_info *op;
|
||
{
|
||
fix_new_exp (frag_now,
|
||
where - frag_now->fr_literal,
|
||
2,
|
||
&op->immediate,
|
||
pcrel,
|
||
how);
|
||
}
|
||
|
||
static void
|
||
build_relax (opcode, op)
|
||
sh_opcode_info *opcode;
|
||
sh_operand_info *op;
|
||
{
|
||
int high_byte = target_big_endian ? 0 : 1;
|
||
char *p;
|
||
|
||
if (opcode->arg[0] == A_BDISP8)
|
||
{
|
||
int what = (opcode->nibbles[1] & 4) ? COND_JUMP_DELAY : COND_JUMP;
|
||
p = frag_var (rs_machine_dependent,
|
||
md_relax_table[C (what, COND32)].rlx_length,
|
||
md_relax_table[C (what, COND8)].rlx_length,
|
||
C (what, 0),
|
||
op->immediate.X_add_symbol,
|
||
op->immediate.X_add_number,
|
||
0);
|
||
p[high_byte] = (opcode->nibbles[0] << 4) | (opcode->nibbles[1]);
|
||
}
|
||
else if (opcode->arg[0] == A_BDISP12)
|
||
{
|
||
p = frag_var (rs_machine_dependent,
|
||
md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length,
|
||
md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length,
|
||
C (UNCOND_JUMP, 0),
|
||
op->immediate.X_add_symbol,
|
||
op->immediate.X_add_number,
|
||
0);
|
||
p[high_byte] = (opcode->nibbles[0] << 4);
|
||
}
|
||
|
||
}
|
||
|
||
/* Insert ldrs & ldre with fancy relocations that relaxation can recognize. */
|
||
|
||
static char *
|
||
insert_loop_bounds (output, operand)
|
||
char *output;
|
||
sh_operand_info *operand;
|
||
{
|
||
char *name;
|
||
symbolS *end_sym;
|
||
|
||
/* Since the low byte of the opcode will be overwritten by the reloc, we
|
||
can just stash the high byte into both bytes and ignore endianness. */
|
||
output[0] = 0x8c;
|
||
output[1] = 0x8c;
|
||
insert (output, BFD_RELOC_SH_LOOP_START, 1, operand);
|
||
insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1);
|
||
|
||
if (sh_relax)
|
||
{
|
||
static int count = 0;
|
||
|
||
/* If the last loop insn is a two-byte-insn, it is in danger of being
|
||
swapped with the insn after it. To prevent this, create a new
|
||
symbol - complete with SH_LABEL reloc - after the last loop insn.
|
||
If the last loop insn is four bytes long, the symbol will be
|
||
right in the middle, but four byte insns are not swapped anyways. */
|
||
/* A REPEAT takes 6 bytes. The SH has a 32 bit address space.
|
||
Hence a 9 digit number should be enough to count all REPEATs. */
|
||
name = alloca (11);
|
||
sprintf (name, "_R%x", count++ & 0x3fffffff);
|
||
end_sym = symbol_new (name, undefined_section, 0, &zero_address_frag);
|
||
/* Make this a local symbol. */
|
||
#ifdef OBJ_COFF
|
||
SF_SET_LOCAL (end_sym);
|
||
#endif /* OBJ_COFF */
|
||
symbol_table_insert (end_sym);
|
||
end_sym->sy_value = operand[1].immediate;
|
||
end_sym->sy_value.X_add_number += 2;
|
||
fix_new (frag_now, frag_now_fix (), 2, end_sym, 0, 1, BFD_RELOC_SH_LABEL);
|
||
}
|
||
|
||
output = frag_more (2);
|
||
output[0] = 0x8e;
|
||
output[1] = 0x8e;
|
||
insert (output, BFD_RELOC_SH_LOOP_START, 1, operand);
|
||
insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1);
|
||
|
||
return frag_more (2);
|
||
}
|
||
|
||
/* Now we know what sort of opcodes it is, let's build the bytes. */
|
||
|
||
static unsigned int
|
||
build_Mytes (opcode, operand)
|
||
sh_opcode_info *opcode;
|
||
sh_operand_info *operand;
|
||
{
|
||
int index;
|
||
char nbuf[4];
|
||
char *output = frag_more (2);
|
||
unsigned int size = 2;
|
||
int low_byte = target_big_endian ? 1 : 0;
|
||
nbuf[0] = 0;
|
||
nbuf[1] = 0;
|
||
nbuf[2] = 0;
|
||
nbuf[3] = 0;
|
||
|
||
for (index = 0; index < 4; index++)
|
||
{
|
||
sh_nibble_type i = opcode->nibbles[index];
|
||
if (i < 16)
|
||
{
|
||
nbuf[index] = i;
|
||
}
|
||
else
|
||
{
|
||
switch (i)
|
||
{
|
||
case REG_N:
|
||
nbuf[index] = reg_n;
|
||
break;
|
||
case REG_M:
|
||
nbuf[index] = reg_m;
|
||
break;
|
||
case SDT_REG_N:
|
||
if (reg_n < 2 || reg_n > 5)
|
||
as_bad (_("Invalid register: 'r%d'"), reg_n);
|
||
nbuf[index] = (reg_n & 3) | 4;
|
||
break;
|
||
case REG_NM:
|
||
nbuf[index] = reg_n | (reg_m >> 2);
|
||
break;
|
||
case REG_B:
|
||
nbuf[index] = reg_b | 0x08;
|
||
break;
|
||
case IMM0_4BY4:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand);
|
||
break;
|
||
case IMM0_4BY2:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand);
|
||
break;
|
||
case IMM0_4:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand);
|
||
break;
|
||
case IMM1_4BY4:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand + 1);
|
||
break;
|
||
case IMM1_4BY2:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand + 1);
|
||
break;
|
||
case IMM1_4:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand + 1);
|
||
break;
|
||
case IMM0_8BY4:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand);
|
||
break;
|
||
case IMM0_8BY2:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand);
|
||
break;
|
||
case IMM0_8:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand);
|
||
break;
|
||
case IMM1_8BY4:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand + 1);
|
||
break;
|
||
case IMM1_8BY2:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand + 1);
|
||
break;
|
||
case IMM1_8:
|
||
insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand + 1);
|
||
break;
|
||
case PCRELIMM_8BY4:
|
||
insert (output, BFD_RELOC_SH_PCRELIMM8BY4,
|
||
operand->type != A_DISP_PC_ABS, operand);
|
||
break;
|
||
case PCRELIMM_8BY2:
|
||
insert (output, BFD_RELOC_SH_PCRELIMM8BY2,
|
||
operand->type != A_DISP_PC_ABS, operand);
|
||
break;
|
||
case REPEAT:
|
||
output = insert_loop_bounds (output, operand);
|
||
nbuf[index] = opcode->nibbles[3];
|
||
operand += 2;
|
||
break;
|
||
default:
|
||
printf (_("failed for %d\n"), i);
|
||
}
|
||
}
|
||
}
|
||
if (!target_big_endian)
|
||
{
|
||
output[1] = (nbuf[0] << 4) | (nbuf[1]);
|
||
output[0] = (nbuf[2] << 4) | (nbuf[3]);
|
||
}
|
||
else
|
||
{
|
||
output[0] = (nbuf[0] << 4) | (nbuf[1]);
|
||
output[1] = (nbuf[2] << 4) | (nbuf[3]);
|
||
}
|
||
return size;
|
||
}
|
||
|
||
/* Find an opcode at the start of *STR_P in the hash table, and set
|
||
*STR_P to the first character after the last one read. */
|
||
|
||
static sh_opcode_info *
|
||
find_cooked_opcode (str_p)
|
||
char **str_p;
|
||
{
|
||
char *str = *str_p;
|
||
unsigned char *op_start;
|
||
unsigned char *op_end;
|
||
char name[20];
|
||
int nlen = 0;
|
||
|
||
/* Drop leading whitespace. */
|
||
while (*str == ' ')
|
||
str++;
|
||
|
||
/* Find the op code end.
|
||
The pre-processor will eliminate whitespace in front of
|
||
any '@' after the first argument; we may be called from
|
||
assemble_ppi, so the opcode might be terminated by an '@'. */
|
||
for (op_start = op_end = (unsigned char *) (str);
|
||
*op_end
|
||
&& nlen < 20
|
||
&& !is_end_of_line[*op_end] && *op_end != ' ' && *op_end != '@';
|
||
op_end++)
|
||
{
|
||
unsigned char c = op_start[nlen];
|
||
|
||
/* The machine independent code will convert CMP/EQ into cmp/EQ
|
||
because it thinks the '/' is the end of the symbol. Moreover,
|
||
all but the first sub-insn is a parallel processing insn won't
|
||
be capitalized. Instead of hacking up the machine independent
|
||
code, we just deal with it here. */
|
||
c = TOLOWER (c);
|
||
name[nlen] = c;
|
||
nlen++;
|
||
}
|
||
|
||
name[nlen] = 0;
|
||
*str_p = op_end;
|
||
|
||
if (nlen == 0)
|
||
as_bad (_("can't find opcode "));
|
||
|
||
return (sh_opcode_info *) hash_find (opcode_hash_control, name);
|
||
}
|
||
|
||
/* Assemble a parallel processing insn. */
|
||
#define DDT_BASE 0xf000 /* Base value for double data transfer insns */
|
||
|
||
static unsigned int
|
||
assemble_ppi (op_end, opcode)
|
||
char *op_end;
|
||
sh_opcode_info *opcode;
|
||
{
|
||
int movx = 0;
|
||
int movy = 0;
|
||
int cond = 0;
|
||
int field_b = 0;
|
||
char *output;
|
||
int move_code;
|
||
unsigned int size;
|
||
|
||
/* Some insn ignore one or more register fields, e.g. psts machl,a0.
|
||
Make sure we encode a defined insn pattern. */
|
||
reg_x = 0;
|
||
reg_y = 0;
|
||
reg_n = 0;
|
||
|
||
for (;;)
|
||
{
|
||
sh_operand_info operand[3];
|
||
|
||
if (opcode->arg[0] != A_END)
|
||
op_end = get_operands (opcode, op_end, operand);
|
||
opcode = get_specific (opcode, operand);
|
||
if (opcode == 0)
|
||
{
|
||
/* Couldn't find an opcode which matched the operands. */
|
||
char *where = frag_more (2);
|
||
size = 2;
|
||
|
||
where[0] = 0x0;
|
||
where[1] = 0x0;
|
||
as_bad (_("invalid operands for opcode"));
|
||
return size;
|
||
}
|
||
|
||
if (opcode->nibbles[0] != PPI)
|
||
as_bad (_("insn can't be combined with parallel processing insn"));
|
||
|
||
switch (opcode->nibbles[1])
|
||
{
|
||
|
||
case NOPX:
|
||
if (movx)
|
||
as_bad (_("multiple movx specifications"));
|
||
movx = DDT_BASE;
|
||
break;
|
||
case NOPY:
|
||
if (movy)
|
||
as_bad (_("multiple movy specifications"));
|
||
movy = DDT_BASE;
|
||
break;
|
||
|
||
case MOVX:
|
||
if (movx)
|
||
as_bad (_("multiple movx specifications"));
|
||
if (reg_n < 4 || reg_n > 5)
|
||
as_bad (_("invalid movx address register"));
|
||
if (opcode->nibbles[2] & 8)
|
||
{
|
||
if (reg_m == A_A1_NUM)
|
||
movx = 1 << 7;
|
||
else if (reg_m != A_A0_NUM)
|
||
as_bad (_("invalid movx dsp register"));
|
||
}
|
||
else
|
||
{
|
||
if (reg_x > 1)
|
||
as_bad (_("invalid movx dsp register"));
|
||
movx = reg_x << 7;
|
||
}
|
||
movx += ((reg_n - 4) << 9) + (opcode->nibbles[2] << 2) + DDT_BASE;
|
||
break;
|
||
|
||
case MOVY:
|
||
if (movy)
|
||
as_bad (_("multiple movy specifications"));
|
||
if (opcode->nibbles[2] & 8)
|
||
{
|
||
/* Bit 3 in nibbles[2] is intended for bit 4 of the opcode,
|
||
so add 8 more. */
|
||
movy = 8;
|
||
if (reg_m == A_A1_NUM)
|
||
movy += 1 << 6;
|
||
else if (reg_m != A_A0_NUM)
|
||
as_bad (_("invalid movy dsp register"));
|
||
}
|
||
else
|
||
{
|
||
if (reg_y > 1)
|
||
as_bad (_("invalid movy dsp register"));
|
||
movy = reg_y << 6;
|
||
}
|
||
if (reg_n < 6 || reg_n > 7)
|
||
as_bad (_("invalid movy address register"));
|
||
movy += ((reg_n - 6) << 8) + opcode->nibbles[2] + DDT_BASE;
|
||
break;
|
||
|
||
case PSH:
|
||
if (operand[0].immediate.X_op != O_constant)
|
||
as_bad (_("dsp immediate shift value not constant"));
|
||
field_b = ((opcode->nibbles[2] << 12)
|
||
| (operand[0].immediate.X_add_number & 127) << 4
|
||
| reg_n);
|
||
break;
|
||
case PPI3:
|
||
if (field_b)
|
||
as_bad (_("multiple parallel processing specifications"));
|
||
field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8)
|
||
+ (reg_x << 6) + (reg_y << 4) + reg_n);
|
||
break;
|
||
case PDC:
|
||
if (cond)
|
||
as_bad (_("multiple condition specifications"));
|
||
cond = opcode->nibbles[2] << 8;
|
||
if (*op_end)
|
||
goto skip_cond_check;
|
||
break;
|
||
case PPIC:
|
||
if (field_b)
|
||
as_bad (_("multiple parallel processing specifications"));
|
||
field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8)
|
||
+ cond + (reg_x << 6) + (reg_y << 4) + reg_n);
|
||
cond = 0;
|
||
break;
|
||
case PMUL:
|
||
if (field_b)
|
||
{
|
||
if ((field_b & 0xef00) != 0xa100)
|
||
as_bad (_("insn cannot be combined with pmuls"));
|
||
field_b -= 0x8100;
|
||
switch (field_b & 0xf)
|
||
{
|
||
case A_X0_NUM:
|
||
field_b += 0 - A_X0_NUM;
|
||
break;
|
||
case A_Y0_NUM:
|
||
field_b += 1 - A_Y0_NUM;
|
||
break;
|
||
case A_A0_NUM:
|
||
field_b += 2 - A_A0_NUM;
|
||
break;
|
||
case A_A1_NUM:
|
||
field_b += 3 - A_A1_NUM;
|
||
break;
|
||
default:
|
||
as_bad (_("bad padd / psub pmuls output operand"));
|
||
}
|
||
}
|
||
field_b += 0x4000 + reg_efg;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
if (cond)
|
||
{
|
||
as_bad (_("condition not followed by conditionalizable insn"));
|
||
cond = 0;
|
||
}
|
||
if (! *op_end)
|
||
break;
|
||
skip_cond_check:
|
||
opcode = find_cooked_opcode (&op_end);
|
||
if (opcode == NULL)
|
||
{
|
||
(as_bad
|
||
(_("unrecognized characters at end of parallel processing insn")));
|
||
break;
|
||
}
|
||
}
|
||
|
||
move_code = movx | movy;
|
||
if (field_b)
|
||
{
|
||
/* Parallel processing insn. */
|
||
unsigned long ppi_code = (movx | movy | 0xf800) << 16 | field_b;
|
||
|
||
output = frag_more (4);
|
||
size = 4;
|
||
if (! target_big_endian)
|
||
{
|
||
output[3] = ppi_code >> 8;
|
||
output[2] = ppi_code;
|
||
}
|
||
else
|
||
{
|
||
output[2] = ppi_code >> 8;
|
||
output[3] = ppi_code;
|
||
}
|
||
move_code |= 0xf800;
|
||
}
|
||
else
|
||
{
|
||
/* Just a double data transfer. */
|
||
output = frag_more (2);
|
||
size = 2;
|
||
}
|
||
if (! target_big_endian)
|
||
{
|
||
output[1] = move_code >> 8;
|
||
output[0] = move_code;
|
||
}
|
||
else
|
||
{
|
||
output[0] = move_code >> 8;
|
||
output[1] = move_code;
|
||
}
|
||
return size;
|
||
}
|
||
|
||
/* This is the guts of the machine-dependent assembler. STR points to a
|
||
machine dependent instruction. This function is supposed to emit
|
||
the frags/bytes it assembles to. */
|
||
|
||
void
|
||
md_assemble (str)
|
||
char *str;
|
||
{
|
||
unsigned char *op_end;
|
||
sh_operand_info operand[3];
|
||
sh_opcode_info *opcode;
|
||
unsigned int size = 0;
|
||
|
||
#ifdef HAVE_SH64
|
||
if (sh64_isa_mode == sh64_isa_shmedia)
|
||
{
|
||
shmedia_md_assemble (str);
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
/* If we've seen pseudo-directives, make sure any emitted data or
|
||
frags are marked as data. */
|
||
if (seen_insn == false)
|
||
{
|
||
sh64_update_contents_mark (true);
|
||
sh64_set_contents_type (CRT_SH5_ISA16);
|
||
}
|
||
|
||
seen_insn = true;
|
||
}
|
||
#endif /* HAVE_SH64 */
|
||
|
||
opcode = find_cooked_opcode (&str);
|
||
op_end = str;
|
||
|
||
if (opcode == NULL)
|
||
{
|
||
as_bad (_("unknown opcode"));
|
||
return;
|
||
}
|
||
|
||
if (sh_relax
|
||
&& ! seg_info (now_seg)->tc_segment_info_data.in_code)
|
||
{
|
||
/* Output a CODE reloc to tell the linker that the following
|
||
bytes are instructions, not data. */
|
||
fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0,
|
||
BFD_RELOC_SH_CODE);
|
||
seg_info (now_seg)->tc_segment_info_data.in_code = 1;
|
||
}
|
||
|
||
if (opcode->nibbles[0] == PPI)
|
||
{
|
||
size = assemble_ppi (op_end, opcode);
|
||
}
|
||
else
|
||
{
|
||
if (opcode->arg[0] == A_BDISP12
|
||
|| opcode->arg[0] == A_BDISP8)
|
||
{
|
||
parse_exp (op_end + 1, &operand[0]);
|
||
build_relax (opcode, &operand[0]);
|
||
}
|
||
else
|
||
{
|
||
if (opcode->arg[0] == A_END)
|
||
{
|
||
/* Ignore trailing whitespace. If there is any, it has already
|
||
been compressed to a single space. */
|
||
if (*op_end == ' ')
|
||
op_end++;
|
||
}
|
||
else
|
||
{
|
||
op_end = get_operands (opcode, op_end, operand);
|
||
}
|
||
opcode = get_specific (opcode, operand);
|
||
|
||
if (opcode == 0)
|
||
{
|
||
/* Couldn't find an opcode which matched the operands. */
|
||
char *where = frag_more (2);
|
||
size = 2;
|
||
|
||
where[0] = 0x0;
|
||
where[1] = 0x0;
|
||
as_bad (_("invalid operands for opcode"));
|
||
}
|
||
else
|
||
{
|
||
if (*op_end)
|
||
as_bad (_("excess operands: '%s'"), op_end);
|
||
|
||
size = build_Mytes (opcode, operand);
|
||
}
|
||
}
|
||
}
|
||
|
||
#ifdef BFD_ASSEMBLER
|
||
dwarf2_emit_insn (size);
|
||
#endif
|
||
}
|
||
|
||
/* This routine is called each time a label definition is seen. It
|
||
emits a BFD_RELOC_SH_LABEL reloc if necessary. */
|
||
|
||
void
|
||
sh_frob_label ()
|
||
{
|
||
static fragS *last_label_frag;
|
||
static int last_label_offset;
|
||
|
||
if (sh_relax
|
||
&& seg_info (now_seg)->tc_segment_info_data.in_code)
|
||
{
|
||
int offset;
|
||
|
||
offset = frag_now_fix ();
|
||
if (frag_now != last_label_frag
|
||
|| offset != last_label_offset)
|
||
{
|
||
fix_new (frag_now, offset, 2, &abs_symbol, 0, 0, BFD_RELOC_SH_LABEL);
|
||
last_label_frag = frag_now;
|
||
last_label_offset = offset;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This routine is called when the assembler is about to output some
|
||
data. It emits a BFD_RELOC_SH_DATA reloc if necessary. */
|
||
|
||
void
|
||
sh_flush_pending_output ()
|
||
{
|
||
if (sh_relax
|
||
&& seg_info (now_seg)->tc_segment_info_data.in_code)
|
||
{
|
||
fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0,
|
||
BFD_RELOC_SH_DATA);
|
||
seg_info (now_seg)->tc_segment_info_data.in_code = 0;
|
||
}
|
||
}
|
||
|
||
symbolS *
|
||
md_undefined_symbol (name)
|
||
char *name ATTRIBUTE_UNUSED;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
#ifdef OBJ_COFF
|
||
#ifndef BFD_ASSEMBLER
|
||
|
||
void
|
||
tc_crawl_symbol_chain (headers)
|
||
object_headers *headers ATTRIBUTE_UNUSED;
|
||
{
|
||
printf (_("call to tc_crawl_symbol_chain \n"));
|
||
}
|
||
|
||
void
|
||
tc_headers_hook (headers)
|
||
object_headers *headers ATTRIBUTE_UNUSED;
|
||
{
|
||
printf (_("call to tc_headers_hook \n"));
|
||
}
|
||
|
||
#endif
|
||
#endif
|
||
|
||
/* Various routines to kill one day. */
|
||
/* Equal to MAX_PRECISION in atof-ieee.c. */
|
||
#define MAX_LITTLENUMS 6
|
||
|
||
/* Turn a string in input_line_pointer into a floating point constant
|
||
of type TYPE, and store the appropriate bytes in *LITP. The number
|
||
of LITTLENUMS emitted is stored in *SIZEP . An error message is
|
||
returned, or NULL on OK. */
|
||
|
||
char *
|
||
md_atof (type, litP, sizeP)
|
||
int type;
|
||
char *litP;
|
||
int *sizeP;
|
||
{
|
||
int prec;
|
||
LITTLENUM_TYPE words[4];
|
||
char *t;
|
||
int i;
|
||
|
||
switch (type)
|
||
{
|
||
case 'f':
|
||
prec = 2;
|
||
break;
|
||
|
||
case 'd':
|
||
prec = 4;
|
||
break;
|
||
|
||
default:
|
||
*sizeP = 0;
|
||
return _("bad call to md_atof");
|
||
}
|
||
|
||
t = atof_ieee (input_line_pointer, type, words);
|
||
if (t)
|
||
input_line_pointer = t;
|
||
|
||
*sizeP = prec * 2;
|
||
|
||
if (! target_big_endian)
|
||
{
|
||
for (i = prec - 1; i >= 0; i--)
|
||
{
|
||
md_number_to_chars (litP, (valueT) words[i], 2);
|
||
litP += 2;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; i < prec; i++)
|
||
{
|
||
md_number_to_chars (litP, (valueT) words[i], 2);
|
||
litP += 2;
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Handle the .uses pseudo-op. This pseudo-op is used just before a
|
||
call instruction. It refers to a label of the instruction which
|
||
loads the register which the call uses. We use it to generate a
|
||
special reloc for the linker. */
|
||
|
||
static void
|
||
s_uses (ignore)
|
||
int ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
expressionS ex;
|
||
|
||
if (! sh_relax)
|
||
as_warn (_(".uses pseudo-op seen when not relaxing"));
|
||
|
||
expression (&ex);
|
||
|
||
if (ex.X_op != O_symbol || ex.X_add_number != 0)
|
||
{
|
||
as_bad (_("bad .uses format"));
|
||
ignore_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
fix_new_exp (frag_now, frag_now_fix (), 2, &ex, 1, BFD_RELOC_SH_USES);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
const char *md_shortopts = "";
|
||
struct option md_longopts[] =
|
||
{
|
||
#define OPTION_RELAX (OPTION_MD_BASE)
|
||
#define OPTION_BIG (OPTION_MD_BASE + 1)
|
||
#define OPTION_LITTLE (OPTION_BIG + 1)
|
||
#define OPTION_SMALL (OPTION_LITTLE + 1)
|
||
#define OPTION_DSP (OPTION_SMALL + 1)
|
||
|
||
{"relax", no_argument, NULL, OPTION_RELAX},
|
||
{"big", no_argument, NULL, OPTION_BIG},
|
||
{"little", no_argument, NULL, OPTION_LITTLE},
|
||
{"small", no_argument, NULL, OPTION_SMALL},
|
||
{"dsp", no_argument, NULL, OPTION_DSP},
|
||
#ifdef HAVE_SH64
|
||
#define OPTION_ISA (OPTION_DSP + 1)
|
||
#define OPTION_ABI (OPTION_ISA + 1)
|
||
#define OPTION_NO_MIX (OPTION_ABI + 1)
|
||
#define OPTION_SHCOMPACT_CONST_CRANGE (OPTION_NO_MIX + 1)
|
||
#define OPTION_NO_EXPAND (OPTION_SHCOMPACT_CONST_CRANGE + 1)
|
||
#define OPTION_PT32 (OPTION_NO_EXPAND + 1)
|
||
{"isa", required_argument, NULL, OPTION_ISA},
|
||
{"abi", required_argument, NULL, OPTION_ABI},
|
||
{"no-mix", no_argument, NULL, OPTION_NO_MIX},
|
||
{"shcompact-const-crange", no_argument, NULL, OPTION_SHCOMPACT_CONST_CRANGE},
|
||
{"no-expand", no_argument, NULL, OPTION_NO_EXPAND},
|
||
{"expand-pt32", no_argument, NULL, OPTION_PT32},
|
||
#endif /* HAVE_SH64 */
|
||
|
||
{NULL, no_argument, NULL, 0}
|
||
};
|
||
size_t md_longopts_size = sizeof (md_longopts);
|
||
|
||
int
|
||
md_parse_option (c, arg)
|
||
int c;
|
||
char *arg ATTRIBUTE_UNUSED;
|
||
{
|
||
switch (c)
|
||
{
|
||
case OPTION_RELAX:
|
||
sh_relax = 1;
|
||
break;
|
||
|
||
case OPTION_BIG:
|
||
target_big_endian = 1;
|
||
break;
|
||
|
||
case OPTION_LITTLE:
|
||
target_big_endian = 0;
|
||
break;
|
||
|
||
case OPTION_SMALL:
|
||
sh_small = 1;
|
||
break;
|
||
|
||
case OPTION_DSP:
|
||
sh_dsp = 1;
|
||
break;
|
||
|
||
#ifdef HAVE_SH64
|
||
case OPTION_ISA:
|
||
if (strcasecmp (arg, "shmedia") == 0)
|
||
{
|
||
if (sh64_isa_mode == sh64_isa_shcompact)
|
||
as_bad (_("Invalid combination: --isa=SHcompact with --isa=SHmedia"));
|
||
sh64_isa_mode = sh64_isa_shmedia;
|
||
}
|
||
else if (strcasecmp (arg, "shcompact") == 0)
|
||
{
|
||
if (sh64_isa_mode == sh64_isa_shmedia)
|
||
as_bad (_("Invalid combination: --isa=SHmedia with --isa=SHcompact"));
|
||
if (sh64_abi == sh64_abi_64)
|
||
as_bad (_("Invalid combination: --abi=64 with --isa=SHcompact"));
|
||
sh64_isa_mode = sh64_isa_shcompact;
|
||
}
|
||
else
|
||
as_bad ("Invalid argument to --isa option: %s", arg);
|
||
break;
|
||
|
||
case OPTION_ABI:
|
||
if (strcmp (arg, "32") == 0)
|
||
{
|
||
if (sh64_abi == sh64_abi_64)
|
||
as_bad (_("Invalid combination: --abi=32 with --abi=64"));
|
||
sh64_abi = sh64_abi_32;
|
||
}
|
||
else if (strcmp (arg, "64") == 0)
|
||
{
|
||
if (sh64_abi == sh64_abi_32)
|
||
as_bad (_("Invalid combination: --abi=64 with --abi=32"));
|
||
if (sh64_isa_mode == sh64_isa_shcompact)
|
||
as_bad (_("Invalid combination: --isa=SHcompact with --abi=64"));
|
||
sh64_abi = sh64_abi_64;
|
||
}
|
||
else
|
||
as_bad ("Invalid argument to --abi option: %s", arg);
|
||
break;
|
||
|
||
case OPTION_NO_MIX:
|
||
sh64_mix = false;
|
||
break;
|
||
|
||
case OPTION_SHCOMPACT_CONST_CRANGE:
|
||
sh64_shcompact_const_crange = true;
|
||
break;
|
||
|
||
case OPTION_NO_EXPAND:
|
||
sh64_expand = false;
|
||
break;
|
||
|
||
case OPTION_PT32:
|
||
sh64_pt32 = true;
|
||
break;
|
||
#endif /* HAVE_SH64 */
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
md_show_usage (stream)
|
||
FILE *stream;
|
||
{
|
||
fprintf (stream, _("\
|
||
SH options:\n\
|
||
-little generate little endian code\n\
|
||
-big generate big endian code\n\
|
||
-relax alter jump instructions for long displacements\n\
|
||
-small align sections to 4 byte boundaries, not 16\n\
|
||
-dsp enable sh-dsp insns, and disable sh3e / sh4 insns.\n"));
|
||
#ifdef HAVE_SH64
|
||
fprintf (stream, _("\
|
||
-isa=[shmedia set default instruction set for SH64\n\
|
||
| SHmedia\n\
|
||
| shcompact\n\
|
||
| SHcompact]\n\
|
||
-abi=[32|64] set size of expanded SHmedia operands and object\n\
|
||
file type\n\
|
||
-shcompact-const-crange emit code-range descriptors for constants in\n\
|
||
SHcompact code sections\n\
|
||
-no-mix disallow SHmedia code in the same section as\n\
|
||
constants and SHcompact code\n\
|
||
-no-expand do not expand MOVI, PT, PTA or PTB instructions\n\
|
||
-expand-pt32 with -abi=64, expand PT, PTA and PTB instructions\n\
|
||
to 32 bits only"));
|
||
#endif /* HAVE_SH64 */
|
||
}
|
||
|
||
/* This struct is used to pass arguments to sh_count_relocs through
|
||
bfd_map_over_sections. */
|
||
|
||
struct sh_count_relocs
|
||
{
|
||
/* Symbol we are looking for. */
|
||
symbolS *sym;
|
||
/* Count of relocs found. */
|
||
int count;
|
||
};
|
||
|
||
/* Count the number of fixups in a section which refer to a particular
|
||
symbol. When using BFD_ASSEMBLER, this is called via
|
||
bfd_map_over_sections. */
|
||
|
||
static void
|
||
sh_count_relocs (abfd, sec, data)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
segT sec;
|
||
PTR data;
|
||
{
|
||
struct sh_count_relocs *info = (struct sh_count_relocs *) data;
|
||
segment_info_type *seginfo;
|
||
symbolS *sym;
|
||
fixS *fix;
|
||
|
||
seginfo = seg_info (sec);
|
||
if (seginfo == NULL)
|
||
return;
|
||
|
||
sym = info->sym;
|
||
for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next)
|
||
{
|
||
if (fix->fx_addsy == sym)
|
||
{
|
||
++info->count;
|
||
fix->fx_tcbit = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Handle the count relocs for a particular section. When using
|
||
BFD_ASSEMBLER, this is called via bfd_map_over_sections. */
|
||
|
||
static void
|
||
sh_frob_section (abfd, sec, ignore)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
segT sec;
|
||
PTR ignore ATTRIBUTE_UNUSED;
|
||
{
|
||
segment_info_type *seginfo;
|
||
fixS *fix;
|
||
|
||
seginfo = seg_info (sec);
|
||
if (seginfo == NULL)
|
||
return;
|
||
|
||
for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next)
|
||
{
|
||
symbolS *sym;
|
||
bfd_vma val;
|
||
fixS *fscan;
|
||
struct sh_count_relocs info;
|
||
|
||
if (fix->fx_r_type != BFD_RELOC_SH_USES)
|
||
continue;
|
||
|
||
/* The BFD_RELOC_SH_USES reloc should refer to a defined local
|
||
symbol in the same section. */
|
||
sym = fix->fx_addsy;
|
||
if (sym == NULL
|
||
|| fix->fx_subsy != NULL
|
||
|| fix->fx_addnumber != 0
|
||
|| S_GET_SEGMENT (sym) != sec
|
||
#if ! defined (BFD_ASSEMBLER) && defined (OBJ_COFF)
|
||
|| S_GET_STORAGE_CLASS (sym) == C_EXT
|
||
#endif
|
||
|| S_IS_EXTERNAL (sym))
|
||
{
|
||
as_warn_where (fix->fx_file, fix->fx_line,
|
||
_(".uses does not refer to a local symbol in the same section"));
|
||
continue;
|
||
}
|
||
|
||
/* Look through the fixups again, this time looking for one
|
||
at the same location as sym. */
|
||
val = S_GET_VALUE (sym);
|
||
for (fscan = seginfo->fix_root;
|
||
fscan != NULL;
|
||
fscan = fscan->fx_next)
|
||
if (val == fscan->fx_frag->fr_address + fscan->fx_where
|
||
&& fscan->fx_r_type != BFD_RELOC_SH_ALIGN
|
||
&& fscan->fx_r_type != BFD_RELOC_SH_CODE
|
||
&& fscan->fx_r_type != BFD_RELOC_SH_DATA
|
||
&& fscan->fx_r_type != BFD_RELOC_SH_LABEL)
|
||
break;
|
||
if (fscan == NULL)
|
||
{
|
||
as_warn_where (fix->fx_file, fix->fx_line,
|
||
_("can't find fixup pointed to by .uses"));
|
||
continue;
|
||
}
|
||
|
||
if (fscan->fx_tcbit)
|
||
{
|
||
/* We've already done this one. */
|
||
continue;
|
||
}
|
||
|
||
/* The variable fscan should also be a fixup to a local symbol
|
||
in the same section. */
|
||
sym = fscan->fx_addsy;
|
||
if (sym == NULL
|
||
|| fscan->fx_subsy != NULL
|
||
|| fscan->fx_addnumber != 0
|
||
|| S_GET_SEGMENT (sym) != sec
|
||
#if ! defined (BFD_ASSEMBLER) && defined (OBJ_COFF)
|
||
|| S_GET_STORAGE_CLASS (sym) == C_EXT
|
||
#endif
|
||
|| S_IS_EXTERNAL (sym))
|
||
{
|
||
as_warn_where (fix->fx_file, fix->fx_line,
|
||
_(".uses target does not refer to a local symbol in the same section"));
|
||
continue;
|
||
}
|
||
|
||
/* Now we look through all the fixups of all the sections,
|
||
counting the number of times we find a reference to sym. */
|
||
info.sym = sym;
|
||
info.count = 0;
|
||
#ifdef BFD_ASSEMBLER
|
||
bfd_map_over_sections (stdoutput, sh_count_relocs, (PTR) &info);
|
||
#else
|
||
{
|
||
int iscan;
|
||
|
||
for (iscan = SEG_E0; iscan < SEG_UNKNOWN; iscan++)
|
||
sh_count_relocs ((bfd *) NULL, iscan, (PTR) &info);
|
||
}
|
||
#endif
|
||
|
||
if (info.count < 1)
|
||
abort ();
|
||
|
||
/* Generate a BFD_RELOC_SH_COUNT fixup at the location of sym.
|
||
We have already adjusted the value of sym to include the
|
||
fragment address, so we undo that adjustment here. */
|
||
subseg_change (sec, 0);
|
||
fix_new (fscan->fx_frag,
|
||
S_GET_VALUE (sym) - fscan->fx_frag->fr_address,
|
||
4, &abs_symbol, info.count, 0, BFD_RELOC_SH_COUNT);
|
||
}
|
||
}
|
||
|
||
/* This function is called after the symbol table has been completed,
|
||
but before the relocs or section contents have been written out.
|
||
If we have seen any .uses pseudo-ops, they point to an instruction
|
||
which loads a register with the address of a function. We look
|
||
through the fixups to find where the function address is being
|
||
loaded from. We then generate a COUNT reloc giving the number of
|
||
times that function address is referred to. The linker uses this
|
||
information when doing relaxing, to decide when it can eliminate
|
||
the stored function address entirely. */
|
||
|
||
void
|
||
sh_frob_file ()
|
||
{
|
||
#ifdef HAVE_SH64
|
||
shmedia_frob_file_before_adjust ();
|
||
#endif
|
||
|
||
if (! sh_relax)
|
||
return;
|
||
|
||
#ifdef BFD_ASSEMBLER
|
||
bfd_map_over_sections (stdoutput, sh_frob_section, (PTR) NULL);
|
||
#else
|
||
{
|
||
int iseg;
|
||
|
||
for (iseg = SEG_E0; iseg < SEG_UNKNOWN; iseg++)
|
||
sh_frob_section ((bfd *) NULL, iseg, (PTR) NULL);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Called after relaxing. Set the correct sizes of the fragments, and
|
||
create relocs so that md_apply_fix3 will fill in the correct values. */
|
||
|
||
void
|
||
md_convert_frag (headers, seg, fragP)
|
||
#ifdef BFD_ASSEMBLER
|
||
bfd *headers ATTRIBUTE_UNUSED;
|
||
#else
|
||
object_headers *headers ATTRIBUTE_UNUSED;
|
||
#endif
|
||
segT seg;
|
||
fragS *fragP;
|
||
{
|
||
int donerelax = 0;
|
||
|
||
switch (fragP->fr_subtype)
|
||
{
|
||
case C (COND_JUMP, COND8):
|
||
case C (COND_JUMP_DELAY, COND8):
|
||
subseg_change (seg, 0);
|
||
fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
|
||
1, BFD_RELOC_SH_PCDISP8BY2);
|
||
fragP->fr_fix += 2;
|
||
fragP->fr_var = 0;
|
||
break;
|
||
|
||
case C (UNCOND_JUMP, UNCOND12):
|
||
subseg_change (seg, 0);
|
||
fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
|
||
1, BFD_RELOC_SH_PCDISP12BY2);
|
||
fragP->fr_fix += 2;
|
||
fragP->fr_var = 0;
|
||
break;
|
||
|
||
case C (UNCOND_JUMP, UNCOND32):
|
||
case C (UNCOND_JUMP, UNDEF_WORD_DISP):
|
||
if (fragP->fr_symbol == NULL)
|
||
as_bad_where (fragP->fr_file, fragP->fr_line,
|
||
_("displacement overflows 12-bit field"));
|
||
else if (S_IS_DEFINED (fragP->fr_symbol))
|
||
as_bad_where (fragP->fr_file, fragP->fr_line,
|
||
_("displacement to defined symbol %s overflows 12-bit field"),
|
||
S_GET_NAME (fragP->fr_symbol));
|
||
else
|
||
as_bad_where (fragP->fr_file, fragP->fr_line,
|
||
_("displacement to undefined symbol %s overflows 12-bit field"),
|
||
S_GET_NAME (fragP->fr_symbol));
|
||
/* Stabilize this frag, so we don't trip an assert. */
|
||
fragP->fr_fix += fragP->fr_var;
|
||
fragP->fr_var = 0;
|
||
break;
|
||
|
||
case C (COND_JUMP, COND12):
|
||
case C (COND_JUMP_DELAY, COND12):
|
||
/* A bcond won't fit, so turn it into a b!cond; bra disp; nop. */
|
||
/* I found that a relax failure for gcc.c-torture/execute/930628-1.c
|
||
was due to gas incorrectly relaxing an out-of-range conditional
|
||
branch with delay slot. It turned:
|
||
bf.s L6 (slot mov.l r12,@(44,r0))
|
||
into:
|
||
|
||
2c: 8f 01 a0 8b bf.s 32 <_main+32> (slot bra L6)
|
||
30: 00 09 nop
|
||
32: 10 cb mov.l r12,@(44,r0)
|
||
Therefore, branches with delay slots have to be handled
|
||
differently from ones without delay slots. */
|
||
{
|
||
unsigned char *buffer =
|
||
(unsigned char *) (fragP->fr_fix + fragP->fr_literal);
|
||
int highbyte = target_big_endian ? 0 : 1;
|
||
int lowbyte = target_big_endian ? 1 : 0;
|
||
int delay = fragP->fr_subtype == C (COND_JUMP_DELAY, COND12);
|
||
|
||
/* Toggle the true/false bit of the bcond. */
|
||
buffer[highbyte] ^= 0x2;
|
||
|
||
/* If this is a delayed branch, we may not put the bra in the
|
||
slot. So we change it to a non-delayed branch, like that:
|
||
b! cond slot_label; bra disp; slot_label: slot_insn
|
||
??? We should try if swapping the conditional branch and
|
||
its delay-slot insn already makes the branch reach. */
|
||
|
||
/* Build a relocation to six / four bytes farther on. */
|
||
subseg_change (seg, 0);
|
||
fix_new (fragP, fragP->fr_fix, 2,
|
||
#ifdef BFD_ASSEMBLER
|
||
section_symbol (seg),
|
||
#else
|
||
seg_info (seg)->dot,
|
||
#endif
|
||
fragP->fr_address + fragP->fr_fix + (delay ? 4 : 6),
|
||
1, BFD_RELOC_SH_PCDISP8BY2);
|
||
|
||
/* Set up a jump instruction. */
|
||
buffer[highbyte + 2] = 0xa0;
|
||
buffer[lowbyte + 2] = 0;
|
||
fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol,
|
||
fragP->fr_offset, 1, BFD_RELOC_SH_PCDISP12BY2);
|
||
|
||
if (delay)
|
||
{
|
||
buffer[highbyte] &= ~0x4; /* Removes delay slot from branch. */
|
||
fragP->fr_fix += 4;
|
||
}
|
||
else
|
||
{
|
||
/* Fill in a NOP instruction. */
|
||
buffer[highbyte + 4] = 0x0;
|
||
buffer[lowbyte + 4] = 0x9;
|
||
|
||
fragP->fr_fix += 6;
|
||
}
|
||
fragP->fr_var = 0;
|
||
donerelax = 1;
|
||
}
|
||
break;
|
||
|
||
case C (COND_JUMP, COND32):
|
||
case C (COND_JUMP_DELAY, COND32):
|
||
case C (COND_JUMP, UNDEF_WORD_DISP):
|
||
case C (COND_JUMP_DELAY, UNDEF_WORD_DISP):
|
||
if (fragP->fr_symbol == NULL)
|
||
as_bad_where (fragP->fr_file, fragP->fr_line,
|
||
_("displacement overflows 8-bit field"));
|
||
else if (S_IS_DEFINED (fragP->fr_symbol))
|
||
as_bad_where (fragP->fr_file, fragP->fr_line,
|
||
_("displacement to defined symbol %s overflows 8-bit field"),
|
||
S_GET_NAME (fragP->fr_symbol));
|
||
else
|
||
as_bad_where (fragP->fr_file, fragP->fr_line,
|
||
_("displacement to undefined symbol %s overflows 8-bit field "),
|
||
S_GET_NAME (fragP->fr_symbol));
|
||
/* Stabilize this frag, so we don't trip an assert. */
|
||
fragP->fr_fix += fragP->fr_var;
|
||
fragP->fr_var = 0;
|
||
break;
|
||
|
||
default:
|
||
#ifdef HAVE_SH64
|
||
shmedia_md_convert_frag (headers, seg, fragP, true);
|
||
#else
|
||
abort ();
|
||
#endif
|
||
}
|
||
|
||
if (donerelax && !sh_relax)
|
||
as_warn_where (fragP->fr_file, fragP->fr_line,
|
||
_("overflow in branch to %s; converted into longer instruction sequence"),
|
||
(fragP->fr_symbol != NULL
|
||
? S_GET_NAME (fragP->fr_symbol)
|
||
: ""));
|
||
}
|
||
|
||
valueT
|
||
md_section_align (seg, size)
|
||
segT seg ATTRIBUTE_UNUSED;
|
||
valueT size;
|
||
{
|
||
#ifdef BFD_ASSEMBLER
|
||
#ifdef OBJ_ELF
|
||
return size;
|
||
#else /* ! OBJ_ELF */
|
||
return ((size + (1 << bfd_get_section_alignment (stdoutput, seg)) - 1)
|
||
& (-1 << bfd_get_section_alignment (stdoutput, seg)));
|
||
#endif /* ! OBJ_ELF */
|
||
#else /* ! BFD_ASSEMBLER */
|
||
return ((size + (1 << section_alignment[(int) seg]) - 1)
|
||
& (-1 << section_alignment[(int) seg]));
|
||
#endif /* ! BFD_ASSEMBLER */
|
||
}
|
||
|
||
/* This static variable is set by s_uacons to tell sh_cons_align that
|
||
the expession does not need to be aligned. */
|
||
|
||
static int sh_no_align_cons = 0;
|
||
|
||
/* This handles the unaligned space allocation pseudo-ops, such as
|
||
.uaword. .uaword is just like .word, but the value does not need
|
||
to be aligned. */
|
||
|
||
static void
|
||
s_uacons (bytes)
|
||
int bytes;
|
||
{
|
||
/* Tell sh_cons_align not to align this value. */
|
||
sh_no_align_cons = 1;
|
||
cons (bytes);
|
||
}
|
||
|
||
/* If a .word, et. al., pseud-op is seen, warn if the value is not
|
||
aligned correctly. Note that this can cause warnings to be issued
|
||
when assembling initialized structured which were declared with the
|
||
packed attribute. FIXME: Perhaps we should require an option to
|
||
enable this warning? */
|
||
|
||
void
|
||
sh_cons_align (nbytes)
|
||
int nbytes;
|
||
{
|
||
int nalign;
|
||
char *p;
|
||
|
||
if (sh_no_align_cons)
|
||
{
|
||
/* This is an unaligned pseudo-op. */
|
||
sh_no_align_cons = 0;
|
||
return;
|
||
}
|
||
|
||
nalign = 0;
|
||
while ((nbytes & 1) == 0)
|
||
{
|
||
++nalign;
|
||
nbytes >>= 1;
|
||
}
|
||
|
||
if (nalign == 0)
|
||
return;
|
||
|
||
if (now_seg == absolute_section)
|
||
{
|
||
if ((abs_section_offset & ((1 << nalign) - 1)) != 0)
|
||
as_warn (_("misaligned data"));
|
||
return;
|
||
}
|
||
|
||
p = frag_var (rs_align_test, 1, 1, (relax_substateT) 0,
|
||
(symbolS *) NULL, (offsetT) nalign, (char *) NULL);
|
||
|
||
record_alignment (now_seg, nalign);
|
||
}
|
||
|
||
/* When relaxing, we need to output a reloc for any .align directive
|
||
that requests alignment to a four byte boundary or larger. This is
|
||
also where we check for misaligned data. */
|
||
|
||
void
|
||
sh_handle_align (frag)
|
||
fragS *frag;
|
||
{
|
||
int bytes = frag->fr_next->fr_address - frag->fr_address - frag->fr_fix;
|
||
|
||
if (frag->fr_type == rs_align_code)
|
||
{
|
||
static const unsigned char big_nop_pattern[] = { 0x00, 0x09 };
|
||
static const unsigned char little_nop_pattern[] = { 0x09, 0x00 };
|
||
|
||
char *p = frag->fr_literal + frag->fr_fix;
|
||
|
||
if (bytes & 1)
|
||
{
|
||
*p++ = 0;
|
||
bytes--;
|
||
frag->fr_fix += 1;
|
||
}
|
||
|
||
if (target_big_endian)
|
||
{
|
||
memcpy (p, big_nop_pattern, sizeof big_nop_pattern);
|
||
frag->fr_var = sizeof big_nop_pattern;
|
||
}
|
||
else
|
||
{
|
||
memcpy (p, little_nop_pattern, sizeof little_nop_pattern);
|
||
frag->fr_var = sizeof little_nop_pattern;
|
||
}
|
||
}
|
||
else if (frag->fr_type == rs_align_test)
|
||
{
|
||
if (bytes != 0)
|
||
as_warn_where (frag->fr_file, frag->fr_line, _("misaligned data"));
|
||
}
|
||
|
||
if (sh_relax
|
||
&& (frag->fr_type == rs_align
|
||
|| frag->fr_type == rs_align_code)
|
||
&& frag->fr_address + frag->fr_fix > 0
|
||
&& frag->fr_offset > 1
|
||
&& now_seg != bss_section)
|
||
fix_new (frag, frag->fr_fix, 2, &abs_symbol, frag->fr_offset, 0,
|
||
BFD_RELOC_SH_ALIGN);
|
||
}
|
||
|
||
/* This macro decides whether a particular reloc is an entry in a
|
||
switch table. It is used when relaxing, because the linker needs
|
||
to know about all such entries so that it can adjust them if
|
||
necessary. */
|
||
|
||
#ifdef BFD_ASSEMBLER
|
||
#define SWITCH_TABLE_CONS(fix) (0)
|
||
#else
|
||
#define SWITCH_TABLE_CONS(fix) \
|
||
((fix)->fx_r_type == 0 \
|
||
&& ((fix)->fx_size == 2 \
|
||
|| (fix)->fx_size == 1 \
|
||
|| (fix)->fx_size == 4))
|
||
#endif
|
||
|
||
#define SWITCH_TABLE(fix) \
|
||
((fix)->fx_addsy != NULL \
|
||
&& (fix)->fx_subsy != NULL \
|
||
&& S_GET_SEGMENT ((fix)->fx_addsy) == text_section \
|
||
&& S_GET_SEGMENT ((fix)->fx_subsy) == text_section \
|
||
&& ((fix)->fx_r_type == BFD_RELOC_32 \
|
||
|| (fix)->fx_r_type == BFD_RELOC_16 \
|
||
|| (fix)->fx_r_type == BFD_RELOC_8 \
|
||
|| SWITCH_TABLE_CONS (fix)))
|
||
|
||
/* See whether we need to force a relocation into the output file.
|
||
This is used to force out switch and PC relative relocations when
|
||
relaxing. */
|
||
|
||
int
|
||
sh_force_relocation (fix)
|
||
fixS *fix;
|
||
{
|
||
|
||
if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|
||
|| fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY
|
||
|| fix->fx_r_type == BFD_RELOC_SH_LOOP_START
|
||
|| fix->fx_r_type == BFD_RELOC_SH_LOOP_END)
|
||
return 1;
|
||
|
||
if (! sh_relax)
|
||
return 0;
|
||
|
||
return (fix->fx_pcrel
|
||
|| SWITCH_TABLE (fix)
|
||
|| fix->fx_r_type == BFD_RELOC_SH_COUNT
|
||
|| fix->fx_r_type == BFD_RELOC_SH_ALIGN
|
||
|| fix->fx_r_type == BFD_RELOC_SH_CODE
|
||
|| fix->fx_r_type == BFD_RELOC_SH_DATA
|
||
#ifdef HAVE_SH64
|
||
|| fix->fx_r_type == BFD_RELOC_SH_SHMEDIA_CODE
|
||
#endif
|
||
|| fix->fx_r_type == BFD_RELOC_SH_LABEL);
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
boolean
|
||
sh_fix_adjustable (fixP)
|
||
fixS *fixP;
|
||
{
|
||
|
||
if (fixP->fx_addsy == NULL)
|
||
return 1;
|
||
|
||
if (fixP->fx_r_type == BFD_RELOC_SH_PCDISP8BY2
|
||
|| fixP->fx_r_type == BFD_RELOC_SH_PCDISP12BY2
|
||
|| fixP->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY2
|
||
|| fixP->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY4
|
||
|| fixP->fx_r_type == BFD_RELOC_8_PCREL
|
||
|| fixP->fx_r_type == BFD_RELOC_SH_SWITCH16
|
||
|| fixP->fx_r_type == BFD_RELOC_SH_SWITCH32)
|
||
return 1;
|
||
|
||
if (! TC_RELOC_RTSYM_LOC_FIXUP (fixP)
|
||
|| fixP->fx_r_type == BFD_RELOC_RVA)
|
||
return 0;
|
||
|
||
/* We need the symbol name for the VTABLE entries */
|
||
if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|
||
|| fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
sh_elf_final_processing ()
|
||
{
|
||
int val;
|
||
|
||
/* Set file-specific flags to indicate if this code needs
|
||
a processor with the sh-dsp / sh3e ISA to execute. */
|
||
#ifdef HAVE_SH64
|
||
/* SH5 and above don't know about the valid_arch arch_sh* bits defined
|
||
in sh-opc.h, so check SH64 mode before checking valid_arch. */
|
||
if (sh64_isa_mode != sh64_isa_unspecified)
|
||
val = EF_SH5;
|
||
else
|
||
#endif /* HAVE_SH64 */
|
||
if (valid_arch & arch_sh1)
|
||
val = EF_SH1;
|
||
else if (valid_arch & arch_sh2)
|
||
val = EF_SH2;
|
||
else if (valid_arch & arch_sh_dsp)
|
||
val = EF_SH_DSP;
|
||
else if (valid_arch & arch_sh3)
|
||
val = EF_SH3;
|
||
else if (valid_arch & arch_sh3_dsp)
|
||
val = EF_SH_DSP;
|
||
else if (valid_arch & arch_sh3e)
|
||
val = EF_SH3E;
|
||
else if (valid_arch & arch_sh4)
|
||
val = EF_SH4;
|
||
else
|
||
abort ();
|
||
|
||
elf_elfheader (stdoutput)->e_flags &= ~EF_SH_MACH_MASK;
|
||
elf_elfheader (stdoutput)->e_flags |= val;
|
||
}
|
||
#endif
|
||
|
||
/* Apply a fixup to the object file. */
|
||
|
||
void
|
||
md_apply_fix3 (fixP, valP, seg)
|
||
fixS * fixP;
|
||
valueT * valP;
|
||
segT seg ATTRIBUTE_UNUSED;
|
||
{
|
||
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
|
||
int lowbyte = target_big_endian ? 1 : 0;
|
||
int highbyte = target_big_endian ? 0 : 1;
|
||
long val = (long) *valP;
|
||
long max, min;
|
||
int shift;
|
||
|
||
#ifdef BFD_ASSEMBLER
|
||
/* A difference between two symbols, the second of which is in the
|
||
current section, is transformed in a PC-relative relocation to
|
||
the other symbol. We have to adjust the relocation type here. */
|
||
if (fixP->fx_pcrel)
|
||
{
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
fixP->fx_r_type = BFD_RELOC_32_PCREL;
|
||
break;
|
||
|
||
/* Currently, we only support 32-bit PCREL relocations.
|
||
We'd need a new reloc type to handle 16_PCREL, and
|
||
8_PCREL is already taken for R_SH_SWITCH8, which
|
||
apparently does something completely different than what
|
||
we need. FIXME. */
|
||
case BFD_RELOC_16:
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return;
|
||
|
||
case BFD_RELOC_8:
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* The function adjust_reloc_syms won't convert a reloc against a weak
|
||
symbol into a reloc against a section, but bfd_install_relocation
|
||
will screw up if the symbol is defined, so we have to adjust val here
|
||
to avoid the screw up later.
|
||
|
||
For ordinary relocs, this does not happen for ELF, since for ELF,
|
||
bfd_install_relocation uses the "special function" field of the
|
||
howto, and does not execute the code that needs to be undone, as long
|
||
as the special function does not return bfd_reloc_continue.
|
||
It can happen for GOT- and PLT-type relocs the way they are
|
||
described in elf32-sh.c as they use bfd_elf_generic_reloc, but it
|
||
doesn't matter here since those relocs don't use VAL; see below. */
|
||
if (OUTPUT_FLAVOR != bfd_target_elf_flavour
|
||
&& fixP->fx_addsy != NULL
|
||
&& S_IS_WEAK (fixP->fx_addsy))
|
||
val -= S_GET_VALUE (fixP->fx_addsy);
|
||
#endif
|
||
|
||
#ifndef BFD_ASSEMBLER
|
||
if (fixP->fx_r_type == 0)
|
||
{
|
||
if (fixP->fx_size == 2)
|
||
fixP->fx_r_type = BFD_RELOC_16;
|
||
else if (fixP->fx_size == 4)
|
||
fixP->fx_r_type = BFD_RELOC_32;
|
||
else if (fixP->fx_size == 1)
|
||
fixP->fx_r_type = BFD_RELOC_8;
|
||
else
|
||
abort ();
|
||
}
|
||
#endif
|
||
|
||
max = min = 0;
|
||
shift = 0;
|
||
switch (fixP->fx_r_type)
|
||
{
|
||
case BFD_RELOC_SH_IMM4:
|
||
max = 0xf;
|
||
*buf = (*buf & 0xf0) | (val & 0xf);
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM4BY2:
|
||
max = 0xf;
|
||
shift = 1;
|
||
*buf = (*buf & 0xf0) | ((val >> 1) & 0xf);
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM4BY4:
|
||
max = 0xf;
|
||
shift = 2;
|
||
*buf = (*buf & 0xf0) | ((val >> 2) & 0xf);
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM8BY2:
|
||
max = 0xff;
|
||
shift = 1;
|
||
*buf = val >> 1;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_IMM8BY4:
|
||
max = 0xff;
|
||
shift = 2;
|
||
*buf = val >> 2;
|
||
break;
|
||
|
||
case BFD_RELOC_8:
|
||
case BFD_RELOC_SH_IMM8:
|
||
/* Sometimes the 8 bit value is sign extended (e.g., add) and
|
||
sometimes it is not (e.g., and). We permit any 8 bit value.
|
||
Note that adding further restrictions may invalidate
|
||
reasonable looking assembly code, such as ``and -0x1,r0''. */
|
||
max = 0xff;
|
||
min = -0xff;
|
||
*buf++ = val;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_PCRELIMM8BY4:
|
||
/* The lower two bits of the PC are cleared before the
|
||
displacement is added in. We can assume that the destination
|
||
is on a 4 byte bounday. If this instruction is also on a 4
|
||
byte boundary, then we want
|
||
(target - here) / 4
|
||
and target - here is a multiple of 4.
|
||
Otherwise, we are on a 2 byte boundary, and we want
|
||
(target - (here - 2)) / 4
|
||
and target - here is not a multiple of 4. Computing
|
||
(target - (here - 2)) / 4 == (target - here + 2) / 4
|
||
works for both cases, since in the first case the addition of
|
||
2 will be removed by the division. target - here is in the
|
||
variable val. */
|
||
val = (val + 2) / 4;
|
||
if (val & ~0xff)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
|
||
buf[lowbyte] = val;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_PCRELIMM8BY2:
|
||
val /= 2;
|
||
if (val & ~0xff)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
|
||
buf[lowbyte] = val;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_PCDISP8BY2:
|
||
val /= 2;
|
||
if (val < -0x80 || val > 0x7f)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
|
||
buf[lowbyte] = val;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_PCDISP12BY2:
|
||
val /= 2;
|
||
if (val < -0x800 || val > 0x7ff)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
|
||
buf[lowbyte] = val & 0xff;
|
||
buf[highbyte] |= (val >> 8) & 0xf;
|
||
break;
|
||
|
||
case BFD_RELOC_32:
|
||
case BFD_RELOC_32_PCREL:
|
||
md_number_to_chars (buf, val, 4);
|
||
break;
|
||
|
||
case BFD_RELOC_16:
|
||
md_number_to_chars (buf, val, 2);
|
||
break;
|
||
|
||
case BFD_RELOC_SH_USES:
|
||
/* Pass the value into sh_coff_reloc_mangle. */
|
||
fixP->fx_addnumber = val;
|
||
break;
|
||
|
||
case BFD_RELOC_SH_COUNT:
|
||
case BFD_RELOC_SH_ALIGN:
|
||
case BFD_RELOC_SH_CODE:
|
||
case BFD_RELOC_SH_DATA:
|
||
case BFD_RELOC_SH_LABEL:
|
||
/* Nothing to do here. */
|
||
break;
|
||
|
||
case BFD_RELOC_SH_LOOP_START:
|
||
case BFD_RELOC_SH_LOOP_END:
|
||
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
fixP->fx_done = 0;
|
||
return;
|
||
|
||
#ifdef OBJ_ELF
|
||
case BFD_RELOC_32_PLT_PCREL:
|
||
/* Make the jump instruction point to the address of the operand. At
|
||
runtime we merely add the offset to the actual PLT entry. */
|
||
* valP = 0xfffffffc;
|
||
val = fixP->fx_addnumber;
|
||
if (fixP->fx_subsy)
|
||
val -= S_GET_VALUE (fixP->fx_subsy);
|
||
md_number_to_chars (buf, val, 4);
|
||
break;
|
||
|
||
case BFD_RELOC_SH_GOTPC:
|
||
/* This is tough to explain. We end up with this one if we have
|
||
operands that look like "_GLOBAL_OFFSET_TABLE_+[.-.L284]".
|
||
The goal here is to obtain the absolute address of the GOT,
|
||
and it is strongly preferable from a performance point of
|
||
view to avoid using a runtime relocation for this. There are
|
||
cases where you have something like:
|
||
|
||
.long _GLOBAL_OFFSET_TABLE_+[.-.L66]
|
||
|
||
and here no correction would be required. Internally in the
|
||
assembler we treat operands of this form as not being pcrel
|
||
since the '.' is explicitly mentioned, and I wonder whether
|
||
it would simplify matters to do it this way. Who knows. In
|
||
earlier versions of the PIC patches, the pcrel_adjust field
|
||
was used to store the correction, but since the expression is
|
||
not pcrel, I felt it would be confusing to do it this way. */
|
||
* valP -= 1;
|
||
md_number_to_chars (buf, val, 4);
|
||
break;
|
||
|
||
case BFD_RELOC_32_GOT_PCREL:
|
||
case BFD_RELOC_SH_GOTPLT32:
|
||
* valP = 0; /* Fully resolved at runtime. No addend. */
|
||
md_number_to_chars (buf, 0, 4);
|
||
break;
|
||
|
||
case BFD_RELOC_32_GOTOFF:
|
||
md_number_to_chars (buf, val, 4);
|
||
break;
|
||
#endif
|
||
|
||
default:
|
||
#ifdef HAVE_SH64
|
||
shmedia_md_apply_fix3 (fixP, valP);
|
||
return;
|
||
#else
|
||
abort ();
|
||
#endif
|
||
}
|
||
|
||
if (shift != 0)
|
||
{
|
||
if ((val & ((1 << shift) - 1)) != 0)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("misaligned offset"));
|
||
if (val >= 0)
|
||
val >>= shift;
|
||
else
|
||
val = ((val >> shift)
|
||
| ((long) -1 & ~ ((long) -1 >> shift)));
|
||
}
|
||
if (max != 0 && (val < min || val > max))
|
||
as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range"));
|
||
|
||
if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
|
||
fixP->fx_done = 1;
|
||
}
|
||
|
||
/* Called just before address relaxation. Return the length
|
||
by which a fragment must grow to reach it's destination. */
|
||
|
||
int
|
||
md_estimate_size_before_relax (fragP, segment_type)
|
||
register fragS *fragP;
|
||
register segT segment_type;
|
||
{
|
||
int what;
|
||
|
||
switch (fragP->fr_subtype)
|
||
{
|
||
default:
|
||
#ifdef HAVE_SH64
|
||
return shmedia_md_estimate_size_before_relax (fragP, segment_type);
|
||
#else
|
||
abort ();
|
||
#endif
|
||
|
||
|
||
case C (UNCOND_JUMP, UNDEF_DISP):
|
||
/* Used to be a branch to somewhere which was unknown. */
|
||
if (!fragP->fr_symbol)
|
||
{
|
||
fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12);
|
||
}
|
||
else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
|
||
{
|
||
fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12);
|
||
}
|
||
else
|
||
{
|
||
fragP->fr_subtype = C (UNCOND_JUMP, UNDEF_WORD_DISP);
|
||
}
|
||
break;
|
||
|
||
case C (COND_JUMP, UNDEF_DISP):
|
||
case C (COND_JUMP_DELAY, UNDEF_DISP):
|
||
what = GET_WHAT (fragP->fr_subtype);
|
||
/* Used to be a branch to somewhere which was unknown. */
|
||
if (fragP->fr_symbol
|
||
&& S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
|
||
{
|
||
/* Got a symbol and it's defined in this segment, become byte
|
||
sized - maybe it will fix up. */
|
||
fragP->fr_subtype = C (what, COND8);
|
||
}
|
||
else if (fragP->fr_symbol)
|
||
{
|
||
/* Its got a segment, but its not ours, so it will always be long. */
|
||
fragP->fr_subtype = C (what, UNDEF_WORD_DISP);
|
||
}
|
||
else
|
||
{
|
||
/* We know the abs value. */
|
||
fragP->fr_subtype = C (what, COND8);
|
||
}
|
||
break;
|
||
|
||
case C (UNCOND_JUMP, UNCOND12):
|
||
case C (UNCOND_JUMP, UNCOND32):
|
||
case C (UNCOND_JUMP, UNDEF_WORD_DISP):
|
||
case C (COND_JUMP, COND8):
|
||
case C (COND_JUMP, COND12):
|
||
case C (COND_JUMP, COND32):
|
||
case C (COND_JUMP, UNDEF_WORD_DISP):
|
||
case C (COND_JUMP_DELAY, COND8):
|
||
case C (COND_JUMP_DELAY, COND12):
|
||
case C (COND_JUMP_DELAY, COND32):
|
||
case C (COND_JUMP_DELAY, UNDEF_WORD_DISP):
|
||
/* When relaxing a section for the second time, we don't need to
|
||
do anything besides return the current size. */
|
||
break;
|
||
}
|
||
|
||
fragP->fr_var = md_relax_table[fragP->fr_subtype].rlx_length;
|
||
return fragP->fr_var;
|
||
}
|
||
|
||
/* Put number into target byte order. */
|
||
|
||
void
|
||
md_number_to_chars (ptr, use, nbytes)
|
||
char *ptr;
|
||
valueT use;
|
||
int nbytes;
|
||
{
|
||
#ifdef HAVE_SH64
|
||
/* We might need to set the contents type to data. */
|
||
sh64_flag_output ();
|
||
#endif
|
||
|
||
if (! target_big_endian)
|
||
number_to_chars_littleendian (ptr, use, nbytes);
|
||
else
|
||
number_to_chars_bigendian (ptr, use, nbytes);
|
||
}
|
||
|
||
/* This version is used in obj-coff.c when not using BFD_ASSEMBLER.
|
||
eg for the sh-hms target. */
|
||
|
||
long
|
||
md_pcrel_from (fixP)
|
||
fixS *fixP;
|
||
{
|
||
return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address + 2;
|
||
}
|
||
|
||
long
|
||
md_pcrel_from_section (fixP, sec)
|
||
fixS *fixP;
|
||
segT sec;
|
||
{
|
||
if (fixP->fx_addsy != (symbolS *) NULL
|
||
&& (! S_IS_DEFINED (fixP->fx_addsy)
|
||
|| S_IS_EXTERN (fixP->fx_addsy)
|
||
|| S_IS_WEAK (fixP->fx_addsy)
|
||
|| S_GET_SEGMENT (fixP->fx_addsy) != sec))
|
||
{
|
||
/* The symbol is undefined (or is defined but not in this section,
|
||
or we're not sure about it being the final definition). Let the
|
||
linker figure it out. We need to adjust the subtraction of a
|
||
symbol to the position of the relocated data, though. */
|
||
return fixP->fx_subsy ? fixP->fx_where + fixP->fx_frag->fr_address : 0;
|
||
}
|
||
|
||
return md_pcrel_from (fixP);
|
||
}
|
||
|
||
#ifdef OBJ_COFF
|
||
|
||
int
|
||
tc_coff_sizemachdep (frag)
|
||
fragS *frag;
|
||
{
|
||
return md_relax_table[frag->fr_subtype].rlx_length;
|
||
}
|
||
|
||
#endif /* OBJ_COFF */
|
||
|
||
#ifndef BFD_ASSEMBLER
|
||
#ifdef OBJ_COFF
|
||
|
||
/* Map BFD relocs to SH COFF relocs. */
|
||
|
||
struct reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc;
|
||
int sh_reloc;
|
||
};
|
||
|
||
static const struct reloc_map coff_reloc_map[] =
|
||
{
|
||
{ BFD_RELOC_32, R_SH_IMM32 },
|
||
{ BFD_RELOC_16, R_SH_IMM16 },
|
||
{ BFD_RELOC_8, R_SH_IMM8 },
|
||
{ BFD_RELOC_SH_PCDISP8BY2, R_SH_PCDISP8BY2 },
|
||
{ BFD_RELOC_SH_PCDISP12BY2, R_SH_PCDISP },
|
||
{ BFD_RELOC_SH_IMM4, R_SH_IMM4 },
|
||
{ BFD_RELOC_SH_IMM4BY2, R_SH_IMM4BY2 },
|
||
{ BFD_RELOC_SH_IMM4BY4, R_SH_IMM4BY4 },
|
||
{ BFD_RELOC_SH_IMM8, R_SH_IMM8 },
|
||
{ BFD_RELOC_SH_IMM8BY2, R_SH_IMM8BY2 },
|
||
{ BFD_RELOC_SH_IMM8BY4, R_SH_IMM8BY4 },
|
||
{ BFD_RELOC_SH_PCRELIMM8BY2, R_SH_PCRELIMM8BY2 },
|
||
{ BFD_RELOC_SH_PCRELIMM8BY4, R_SH_PCRELIMM8BY4 },
|
||
{ BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
|
||
{ BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
|
||
{ BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
|
||
{ BFD_RELOC_SH_USES, R_SH_USES },
|
||
{ BFD_RELOC_SH_COUNT, R_SH_COUNT },
|
||
{ BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
|
||
{ BFD_RELOC_SH_CODE, R_SH_CODE },
|
||
{ BFD_RELOC_SH_DATA, R_SH_DATA },
|
||
{ BFD_RELOC_SH_LABEL, R_SH_LABEL },
|
||
{ BFD_RELOC_UNUSED, 0 }
|
||
};
|
||
|
||
/* Adjust a reloc for the SH. This is similar to the generic code,
|
||
but does some minor tweaking. */
|
||
|
||
void
|
||
sh_coff_reloc_mangle (seg, fix, intr, paddr)
|
||
segment_info_type *seg;
|
||
fixS *fix;
|
||
struct internal_reloc *intr;
|
||
unsigned int paddr;
|
||
{
|
||
symbolS *symbol_ptr = fix->fx_addsy;
|
||
symbolS *dot;
|
||
|
||
intr->r_vaddr = paddr + fix->fx_frag->fr_address + fix->fx_where;
|
||
|
||
if (! SWITCH_TABLE (fix))
|
||
{
|
||
const struct reloc_map *rm;
|
||
|
||
for (rm = coff_reloc_map; rm->bfd_reloc != BFD_RELOC_UNUSED; rm++)
|
||
if (rm->bfd_reloc == (bfd_reloc_code_real_type) fix->fx_r_type)
|
||
break;
|
||
if (rm->bfd_reloc == BFD_RELOC_UNUSED)
|
||
as_bad_where (fix->fx_file, fix->fx_line,
|
||
_("Can not represent %s relocation in this object file format"),
|
||
bfd_get_reloc_code_name (fix->fx_r_type));
|
||
intr->r_type = rm->sh_reloc;
|
||
intr->r_offset = 0;
|
||
}
|
||
else
|
||
{
|
||
know (sh_relax);
|
||
|
||
if (fix->fx_r_type == BFD_RELOC_16)
|
||
intr->r_type = R_SH_SWITCH16;
|
||
else if (fix->fx_r_type == BFD_RELOC_8)
|
||
intr->r_type = R_SH_SWITCH8;
|
||
else if (fix->fx_r_type == BFD_RELOC_32)
|
||
intr->r_type = R_SH_SWITCH32;
|
||
else
|
||
abort ();
|
||
|
||
/* For a switch reloc, we set r_offset to the difference between
|
||
the reloc address and the subtrahend. When the linker is
|
||
doing relaxing, it can use the determine the starting and
|
||
ending points of the switch difference expression. */
|
||
intr->r_offset = intr->r_vaddr - S_GET_VALUE (fix->fx_subsy);
|
||
}
|
||
|
||
/* PC relative relocs are always against the current section. */
|
||
if (symbol_ptr == NULL)
|
||
{
|
||
switch (fix->fx_r_type)
|
||
{
|
||
case BFD_RELOC_SH_PCRELIMM8BY2:
|
||
case BFD_RELOC_SH_PCRELIMM8BY4:
|
||
case BFD_RELOC_SH_PCDISP8BY2:
|
||
case BFD_RELOC_SH_PCDISP12BY2:
|
||
case BFD_RELOC_SH_USES:
|
||
symbol_ptr = seg->dot;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (fix->fx_r_type == BFD_RELOC_SH_USES)
|
||
{
|
||
/* We can't store the offset in the object file, since this
|
||
reloc does not take up any space, so we store it in r_offset.
|
||
The fx_addnumber field was set in md_apply_fix3. */
|
||
intr->r_offset = fix->fx_addnumber;
|
||
}
|
||
else if (fix->fx_r_type == BFD_RELOC_SH_COUNT)
|
||
{
|
||
/* We can't store the count in the object file, since this reloc
|
||
does not take up any space, so we store it in r_offset. The
|
||
fx_offset field was set when the fixup was created in
|
||
sh_coff_frob_file. */
|
||
intr->r_offset = fix->fx_offset;
|
||
/* This reloc is always absolute. */
|
||
symbol_ptr = NULL;
|
||
}
|
||
else if (fix->fx_r_type == BFD_RELOC_SH_ALIGN)
|
||
{
|
||
/* Store the alignment in the r_offset field. */
|
||
intr->r_offset = fix->fx_offset;
|
||
/* This reloc is always absolute. */
|
||
symbol_ptr = NULL;
|
||
}
|
||
else if (fix->fx_r_type == BFD_RELOC_SH_CODE
|
||
|| fix->fx_r_type == BFD_RELOC_SH_DATA
|
||
|| fix->fx_r_type == BFD_RELOC_SH_LABEL)
|
||
{
|
||
/* These relocs are always absolute. */
|
||
symbol_ptr = NULL;
|
||
}
|
||
|
||
/* Turn the segment of the symbol into an offset. */
|
||
if (symbol_ptr != NULL)
|
||
{
|
||
dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
|
||
if (dot != NULL)
|
||
intr->r_symndx = dot->sy_number;
|
||
else
|
||
intr->r_symndx = symbol_ptr->sy_number;
|
||
}
|
||
else
|
||
intr->r_symndx = -1;
|
||
}
|
||
|
||
#endif /* OBJ_COFF */
|
||
#endif /* ! BFD_ASSEMBLER */
|
||
|
||
#ifdef BFD_ASSEMBLER
|
||
|
||
/* Create a reloc. */
|
||
|
||
arelent *
|
||
tc_gen_reloc (section, fixp)
|
||
asection *section ATTRIBUTE_UNUSED;
|
||
fixS *fixp;
|
||
{
|
||
arelent *rel;
|
||
bfd_reloc_code_real_type r_type;
|
||
|
||
rel = (arelent *) xmalloc (sizeof (arelent));
|
||
rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
|
||
*rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
|
||
rel->address = fixp->fx_frag->fr_address + fixp->fx_where;
|
||
|
||
if (fixp->fx_subsy
|
||
&& S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
|
||
{
|
||
fixp->fx_addnumber -= S_GET_VALUE (fixp->fx_subsy);
|
||
fixp->fx_subsy = 0;
|
||
}
|
||
|
||
r_type = fixp->fx_r_type;
|
||
|
||
if (SWITCH_TABLE (fixp))
|
||
{
|
||
rel->addend = rel->address - S_GET_VALUE (fixp->fx_subsy);
|
||
if (r_type == BFD_RELOC_16)
|
||
r_type = BFD_RELOC_SH_SWITCH16;
|
||
else if (r_type == BFD_RELOC_8)
|
||
r_type = BFD_RELOC_8_PCREL;
|
||
else if (r_type == BFD_RELOC_32)
|
||
r_type = BFD_RELOC_SH_SWITCH32;
|
||
else
|
||
abort ();
|
||
}
|
||
else if (r_type == BFD_RELOC_SH_USES)
|
||
rel->addend = fixp->fx_addnumber;
|
||
else if (r_type == BFD_RELOC_SH_COUNT)
|
||
rel->addend = fixp->fx_offset;
|
||
else if (r_type == BFD_RELOC_SH_ALIGN)
|
||
rel->addend = fixp->fx_offset;
|
||
else if (r_type == BFD_RELOC_VTABLE_INHERIT
|
||
|| r_type == BFD_RELOC_VTABLE_ENTRY)
|
||
rel->addend = fixp->fx_offset;
|
||
else if (r_type == BFD_RELOC_SH_LOOP_START
|
||
|| r_type == BFD_RELOC_SH_LOOP_END)
|
||
rel->addend = fixp->fx_offset;
|
||
else if (r_type == BFD_RELOC_SH_LABEL && fixp->fx_pcrel)
|
||
{
|
||
rel->addend = 0;
|
||
rel->address = rel->addend = fixp->fx_offset;
|
||
}
|
||
#ifdef HAVE_SH64
|
||
else if (shmedia_init_reloc (rel, fixp))
|
||
;
|
||
#endif
|
||
else if (fixp->fx_pcrel)
|
||
rel->addend = fixp->fx_addnumber;
|
||
else if (r_type == BFD_RELOC_32 || r_type == BFD_RELOC_32_GOTOFF)
|
||
rel->addend = fixp->fx_addnumber;
|
||
else
|
||
rel->addend = 0;
|
||
|
||
rel->howto = bfd_reloc_type_lookup (stdoutput, r_type);
|
||
if (rel->howto == NULL || fixp->fx_subsy)
|
||
{
|
||
as_bad_where (fixp->fx_file, fixp->fx_line,
|
||
_("Cannot represent relocation type %s"),
|
||
bfd_get_reloc_code_name (r_type));
|
||
/* Set howto to a garbage value so that we can keep going. */
|
||
rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32);
|
||
assert (rel->howto != NULL);
|
||
}
|
||
|
||
return rel;
|
||
}
|
||
|
||
#ifdef OBJ_ELF
|
||
inline static char *
|
||
sh_end_of_match (cont, what)
|
||
char *cont, *what;
|
||
{
|
||
int len = strlen (what);
|
||
|
||
if (strncasecmp (cont, what, strlen (what)) == 0
|
||
&& ! is_part_of_name (cont[len]))
|
||
return cont + len;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
int
|
||
sh_parse_name (name, exprP, nextcharP)
|
||
char const *name;
|
||
expressionS *exprP;
|
||
char *nextcharP;
|
||
{
|
||
char *next = input_line_pointer;
|
||
char *next_end;
|
||
int reloc_type;
|
||
segT segment;
|
||
|
||
exprP->X_op_symbol = NULL;
|
||
|
||
if (strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0)
|
||
{
|
||
if (! GOT_symbol)
|
||
GOT_symbol = symbol_find_or_make (name);
|
||
|
||
exprP->X_add_symbol = GOT_symbol;
|
||
no_suffix:
|
||
/* If we have an absolute symbol or a reg, then we know its
|
||
value now. */
|
||
segment = S_GET_SEGMENT (exprP->X_add_symbol);
|
||
if (segment == absolute_section)
|
||
{
|
||
exprP->X_op = O_constant;
|
||
exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol);
|
||
exprP->X_add_symbol = NULL;
|
||
}
|
||
else if (segment == reg_section)
|
||
{
|
||
exprP->X_op = O_register;
|
||
exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol);
|
||
exprP->X_add_symbol = NULL;
|
||
}
|
||
else
|
||
{
|
||
exprP->X_op = O_symbol;
|
||
exprP->X_add_number = 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
exprP->X_add_symbol = symbol_find_or_make (name);
|
||
|
||
if (*nextcharP != '@')
|
||
goto no_suffix;
|
||
else if ((next_end = sh_end_of_match (next + 1, "GOTOFF")))
|
||
reloc_type = BFD_RELOC_32_GOTOFF;
|
||
else if ((next_end = sh_end_of_match (next + 1, "GOTPLT")))
|
||
reloc_type = BFD_RELOC_SH_GOTPLT32;
|
||
else if ((next_end = sh_end_of_match (next + 1, "GOT")))
|
||
reloc_type = BFD_RELOC_32_GOT_PCREL;
|
||
else if ((next_end = sh_end_of_match (next + 1, "PLT")))
|
||
reloc_type = BFD_RELOC_32_PLT_PCREL;
|
||
else
|
||
goto no_suffix;
|
||
|
||
*input_line_pointer = *nextcharP;
|
||
input_line_pointer = next_end;
|
||
*nextcharP = *input_line_pointer;
|
||
*input_line_pointer = '\0';
|
||
|
||
exprP->X_op = O_PIC_reloc;
|
||
exprP->X_add_number = 0;
|
||
exprP->X_md = reloc_type;
|
||
|
||
return 1;
|
||
}
|
||
#endif
|
||
#endif /* BFD_ASSEMBLER */
|