bf7279d535
* config/tc-ppc.c (warn_476, last_insn, last_seg, last_subseg): New static vars. (md_longopts, md_parse_option, md_show_usage): Add --ppc476-workaround. (ppc_elf_cons_fix_check): New function. (md_assemble): Set last_insn, last_seg, last_subseg. (ppc_byte, md_apply_fix): Handle warn_476. * config/tc-ppc.h (TC_CONS_FIX_CHECK): Define. (ppc_elf_cons_fix_check): Declare. * read.c (cons_worker): Invoke TC_CONS_FIX_CHECK.
291 lines
9.0 KiB
C
291 lines
9.0 KiB
C
/* tc-ppc.h -- Header file for tc-ppc.c.
|
||
Copyright (C) 1994-2014 Free Software Foundation, Inc.
|
||
Written by Ian Lance Taylor, Cygnus Support.
|
||
|
||
This file is part of GAS, the GNU Assembler.
|
||
|
||
GAS is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3, or (at your option)
|
||
any later version.
|
||
|
||
GAS is distributed in the hope that it will be useful,
|
||
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 the Free
|
||
Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
|
||
02110-1301, USA. */
|
||
|
||
#define TC_PPC
|
||
|
||
#include "opcode/ppc.h"
|
||
|
||
struct fix;
|
||
|
||
/* Set the endianness we are using. Default to big endian. */
|
||
#ifndef TARGET_BYTES_BIG_ENDIAN
|
||
#define TARGET_BYTES_BIG_ENDIAN 1
|
||
#endif
|
||
|
||
/* If OBJ_COFF is defined, and TE_PE is not defined, we are assembling
|
||
XCOFF for AIX or PowerMac. If TE_PE is defined, we are assembling
|
||
COFF for Windows NT. */
|
||
|
||
#ifdef OBJ_COFF
|
||
#ifndef TE_PE
|
||
#define OBJ_XCOFF
|
||
#endif
|
||
#endif
|
||
|
||
/* The target BFD architecture. */
|
||
#define TARGET_ARCH (ppc_arch ())
|
||
#define TARGET_MACH (ppc_mach ())
|
||
extern enum bfd_architecture ppc_arch (void);
|
||
extern unsigned long ppc_mach (void);
|
||
|
||
/* Whether or not the target is big endian */
|
||
extern int target_big_endian;
|
||
|
||
/* The target BFD format. */
|
||
#define TARGET_FORMAT (ppc_target_format ())
|
||
extern char *ppc_target_format (void);
|
||
|
||
/* Permit temporary numeric labels. */
|
||
#define LOCAL_LABELS_FB 1
|
||
|
||
/* $ is used to refer to the current location. */
|
||
#define DOLLAR_DOT
|
||
|
||
/* Strings do not use backslash escapes under COFF. */
|
||
#ifdef OBJ_COFF
|
||
#define NO_STRING_ESCAPES
|
||
#endif
|
||
|
||
#ifdef OBJ_ELF
|
||
#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
|
||
#endif
|
||
|
||
#if TARGET_BYTES_BIG_ENDIAN
|
||
#define PPC_BIG_ENDIAN 1
|
||
#else
|
||
#define PPC_BIG_ENDIAN 0
|
||
#endif
|
||
|
||
/* We don't need to handle .word strangely. */
|
||
#define WORKING_DOT_WORD
|
||
|
||
#define MAX_MEM_FOR_RS_ALIGN_CODE 4
|
||
#define HANDLE_ALIGN(FRAGP) \
|
||
if ((FRAGP)->fr_type == rs_align_code) \
|
||
ppc_handle_align (FRAGP);
|
||
|
||
extern void ppc_handle_align (struct frag *);
|
||
extern void ppc_frag_check (struct frag *);
|
||
|
||
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
|
||
|
||
#define md_frag_check(FRAGP) ppc_frag_check (FRAGP)
|
||
|
||
/* Arrange to store the value of ppc_cpu at the site of a fixup
|
||
for later use in md_apply_fix. */
|
||
struct _ppc_fix_extra
|
||
{
|
||
ppc_cpu_t ppc_cpu;
|
||
};
|
||
|
||
extern ppc_cpu_t ppc_cpu;
|
||
|
||
#define TC_FIX_TYPE struct _ppc_fix_extra
|
||
#define TC_INIT_FIX_DATA(FIXP) \
|
||
do { (FIXP)->tc_fix_data.ppc_cpu = ppc_cpu; } while (0)
|
||
|
||
#ifdef TE_PE
|
||
|
||
/* Question marks are permitted in symbol names. */
|
||
#define LEX_QM 1
|
||
|
||
/* Don't adjust TOC relocs. */
|
||
#define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX)
|
||
extern int ppc_pe_fix_adjustable (struct fix *);
|
||
|
||
#endif
|
||
|
||
#ifdef OBJ_XCOFF
|
||
|
||
/* Declarations needed when generating XCOFF code. XCOFF is an
|
||
extension of COFF, used only on the RS/6000. Rather than create an
|
||
obj-xcoff, we just use obj-coff, and handle the extensions here in
|
||
tc-ppc. */
|
||
|
||
/* We need to keep some information for symbols. */
|
||
struct ppc_tc_sy
|
||
{
|
||
/* We keep a few linked lists of symbols. */
|
||
symbolS *next;
|
||
/* The real name, if the symbol was renamed. */
|
||
char *real_name;
|
||
/* Non-zero if the symbol should be output. The RS/6000 assembler
|
||
only outputs symbols that are external or are mentioned in a
|
||
.globl or .lglobl statement. */
|
||
unsigned char output;
|
||
/* The symbol class. */
|
||
short symbol_class;
|
||
/* For a csect or common symbol, the alignment to use. */
|
||
unsigned char align;
|
||
/* For a csect symbol, the subsegment we are using. This is zero
|
||
for symbols that are not csects. */
|
||
subsegT subseg;
|
||
/* For a csect symbol, the last symbol which has been defined in
|
||
this csect, or NULL if none have been defined so far.
|
||
For a .bs symbol, the referenced csect symbol.
|
||
For a label, the enclosing csect. */
|
||
symbolS *within;
|
||
union
|
||
{
|
||
/* For a function symbol, a symbol whose value is the size. The
|
||
field is NULL if there is no size. */
|
||
symbolS *size;
|
||
/* For a dwarf symbol, the corresponding dwarf subsection. */
|
||
struct dw_subsection *dw;
|
||
} u;
|
||
};
|
||
|
||
#define TC_SYMFIELD_TYPE struct ppc_tc_sy
|
||
|
||
/* We need an additional auxent for function symbols. */
|
||
#define OBJ_COFF_MAX_AUXENTRIES 2
|
||
|
||
/* Square and curly brackets are permitted in symbol names. */
|
||
#define LEX_BR 3
|
||
|
||
/* Canonicalize the symbol name. */
|
||
#define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name)
|
||
extern char *ppc_canonicalize_symbol_name (char *);
|
||
|
||
/* Get the symbol class from the name. */
|
||
#define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym)
|
||
extern void ppc_symbol_new_hook (symbolS *);
|
||
|
||
/* Set the symbol class of a label based on the csect. */
|
||
#define tc_frob_label(sym) ppc_frob_label (sym)
|
||
extern void ppc_frob_label (symbolS *);
|
||
|
||
/* TOC relocs requires special handling. */
|
||
#define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
|
||
extern int ppc_fix_adjustable (struct fix *);
|
||
|
||
/* We need to set the section VMA. */
|
||
#define tc_frob_section(sec) ppc_frob_section (sec)
|
||
extern void ppc_frob_section (asection *);
|
||
|
||
/* Finish up the symbol. */
|
||
#define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym)
|
||
extern int ppc_frob_symbol (symbolS *);
|
||
|
||
/* Finish up the entire symtab. */
|
||
#define tc_adjust_symtab() ppc_adjust_symtab ()
|
||
extern void ppc_adjust_symtab (void);
|
||
|
||
/* We also need to copy, in particular, the class of the symbol,
|
||
over what obj-coff would otherwise have copied. */
|
||
#define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
|
||
do { \
|
||
if (SF_GET_GET_SEGMENT (dest)) \
|
||
S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \
|
||
symbol_get_tc (dest)->u = symbol_get_tc (src)->u; \
|
||
symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \
|
||
symbol_get_tc (dest)->symbol_class = symbol_get_tc (src)->symbol_class; \
|
||
symbol_get_tc (dest)->within = symbol_get_tc (src)->within; \
|
||
} while (0)
|
||
|
||
extern void ppc_xcoff_end (void);
|
||
#define md_end ppc_xcoff_end
|
||
|
||
#define tc_new_dot_label(sym) ppc_new_dot_label (sym)
|
||
extern void ppc_new_dot_label (symbolS *);
|
||
|
||
#endif /* OBJ_XCOFF */
|
||
|
||
extern const char ppc_symbol_chars[];
|
||
#define tc_symbol_chars ppc_symbol_chars
|
||
|
||
#ifdef OBJ_ELF
|
||
|
||
/* Support for SHT_ORDERED */
|
||
extern int ppc_section_type (char *, size_t);
|
||
extern int ppc_section_flags (flagword, bfd_vma, int);
|
||
|
||
#define md_elf_section_type(STR, LEN) ppc_section_type (STR, LEN)
|
||
#define md_elf_section_flags(FLAGS, ATTR, TYPE) ppc_section_flags (FLAGS, ATTR, TYPE)
|
||
|
||
#define tc_comment_chars ppc_comment_chars
|
||
extern const char *ppc_comment_chars;
|
||
|
||
/* Keep relocations relative to the GOT, or non-PC relative. */
|
||
#define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
|
||
extern int ppc_fix_adjustable (struct fix *);
|
||
|
||
/* Values passed to md_apply_fix don't include symbol values. */
|
||
#define MD_APPLY_SYM_VALUE(FIX) 0
|
||
|
||
#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
|
||
ppc_elf_parse_cons (EXP, NBYTES)
|
||
extern bfd_reloc_code_real_type ppc_elf_parse_cons (expressionS *,
|
||
unsigned int);
|
||
#define TC_CONS_FIX_CHECK(EXP, NBYTES, FIX) \
|
||
ppc_elf_cons_fix_check (EXP, NBYTES, FIX)
|
||
extern void ppc_elf_cons_fix_check (expressionS *, unsigned int, struct fix *);
|
||
|
||
#define tc_frob_file_before_adjust ppc_frob_file_before_adjust
|
||
extern void ppc_frob_file_before_adjust (void);
|
||
|
||
#define tc_adjust_symtab() ppc_elf_adjust_symtab ()
|
||
extern void ppc_elf_adjust_symtab (void);
|
||
|
||
extern void ppc_elf_end (void);
|
||
#define md_end ppc_elf_end
|
||
|
||
#endif /* OBJ_ELF */
|
||
|
||
#if defined (OBJ_ELF) || defined (OBJ_XCOFF)
|
||
#define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX)
|
||
extern int ppc_force_relocation (struct fix *);
|
||
#endif
|
||
|
||
/* call md_pcrel_from_section, not md_pcrel_from */
|
||
#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC)
|
||
extern long md_pcrel_from_section (struct fix *, segT);
|
||
|
||
#define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp)
|
||
extern int ppc_parse_name (const char *, struct expressionS *);
|
||
|
||
#define md_operand(x)
|
||
|
||
#define md_cleanup() ppc_cleanup ()
|
||
extern void ppc_cleanup (void);
|
||
|
||
/* ppc uses different register numbers between .eh_frame and .debug_frame.
|
||
This macro translates the .eh_frame register numbers to .debug_frame
|
||
register numbers. */
|
||
#define md_reg_eh_frame_to_debug_frame(regno) \
|
||
((regno) == 70 ? 64 /* cr2 */ : (regno))
|
||
|
||
#define TARGET_USE_CFIPOP 1
|
||
|
||
#define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions
|
||
extern void ppc_cfi_frame_initial_instructions (void);
|
||
|
||
#define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum
|
||
extern int tc_ppc_regname_to_dw2regnum (char *);
|
||
|
||
extern int ppc_cie_data_alignment;
|
||
|
||
extern int ppc_dwarf2_line_min_insn_length;
|
||
|
||
#define DWARF2_LINE_MIN_INSN_LENGTH ppc_dwarf2_line_min_insn_length
|
||
#define DWARF2_DEFAULT_RETURN_COLUMN 0x41
|
||
#define DWARF2_CIE_DATA_ALIGNMENT ppc_cie_data_alignment
|