| /* This file is tc-arm.h |
| Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 2004 Free Software Foundation, Inc. |
| Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
| Modified by David Taylor (dtaylor@armltd.co.uk) |
| |
| 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 2, 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, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| #define TC_ARM 1 |
| |
| #ifndef TARGET_BYTES_BIG_ENDIAN |
| #define TARGET_BYTES_BIG_ENDIAN 0 |
| #endif |
| |
| #define WORKING_DOT_WORD |
| |
| #define COFF_MAGIC ARMMAGIC |
| #define TARGET_ARCH bfd_arch_arm |
| |
| #define AOUT_MACHTYPE 0 |
| |
| #define DIFF_EXPR_OK |
| |
| #ifdef LITTLE_ENDIAN |
| #undef LITTLE_ENDIAN |
| #endif |
| |
| #ifdef BIG_ENDIAN |
| #undef BIG_ENDIAN |
| #endif |
| |
| #define LITTLE_ENDIAN 1234 |
| #define BIG_ENDIAN 4321 |
| |
| struct fix; |
| |
| #if defined OBJ_AOUT |
| # if defined TE_RISCIX |
| # define TARGET_FORMAT "a.out-riscix" |
| # elif defined TE_LINUX |
| # define ARM_BI_ENDIAN |
| # define TARGET_FORMAT "a.out-arm-linux" |
| # elif defined TE_NetBSD |
| # define TARGET_FORMAT "a.out-arm-netbsd" |
| # else |
| # define ARM_BI_ENDIAN |
| # define TARGET_FORMAT (target_big_endian ? "a.out-arm-big" : "a.out-arm-little") |
| # endif |
| #elif defined OBJ_AIF |
| # define TARGET_FORMAT "aif" |
| #elif defined OBJ_COFF |
| # define ARM_BI_ENDIAN |
| # if defined TE_PE |
| # if defined TE_EPOC |
| # define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little") |
| # else |
| # define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little") |
| # endif |
| # else |
| # define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little") |
| # endif |
| #elif defined OBJ_ELF |
| # define ARM_BI_ENDIAN |
| # define TARGET_FORMAT elf32_arm_target_format () |
| #endif |
| |
| #define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX) |
| |
| #define md_convert_frag(b, s, f) { as_fatal (_("arm convert_frag\n")); } |
| |
| #define md_cleanup() arm_cleanup () |
| |
| #define md_start_line_hook() arm_start_line_hook () |
| |
| #define tc_frob_label(S) arm_frob_label (S) |
| |
| /* We also need to mark assembler created symbols: */ |
| #define tc_frob_fake_label(S) arm_frob_label (S) |
| |
| /* NOTE: The fake label creation in stabs.c:s_stab_generic() has |
| deliberately not been updated to mark assembler created stabs |
| symbols as Thumb. */ |
| |
| #define TC_FIX_TYPE PTR |
| #define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = NULL) |
| |
| /* We need to keep some local information on symbols. */ |
| |
| #define TC_SYMFIELD_TYPE unsigned int |
| #define ARM_GET_FLAG(s) (*symbol_get_tc (s)) |
| #define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) |= (v)) |
| #define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v)) |
| |
| #define ARM_FLAG_THUMB (1 << 0) /* The symbol is a Thumb symbol rather than an Arm symbol. */ |
| #define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that supports interworking. */ |
| #define THUMB_FLAG_FUNC (1 << 2) /* The symbol is attached to the start of a Thumb function. */ |
| |
| #define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB) |
| #define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK) |
| #define THUMB_IS_FUNC(s) (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC) |
| |
| #define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB)) |
| #define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK)) |
| #define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC)) |
| |
| #define TC_START_LABEL(C,STR) (c == ':' || (c == '/' && arm_data_in_code ())) |
| #define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str); |
| #define obj_adjust_symtab() arm_adjust_symtab () |
| #define tc_aout_pre_write_hook(x) {;} /* not used */ |
| |
| #define LISTING_HEADER "ARM GAS " |
| |
| #define OPTIONAL_REGISTER_PREFIX '%' |
| |
| #define LOCAL_LABEL(name) (name[0] == '.' && (name[1] == 'L')) |
| #define LOCAL_LABELS_FB 1 |
| |
| /* This expression evaluates to true if the relocation is for a local |
| object for which we still want to do the relocation at runtime. |
| False if we are willing to perform this relocation while building |
| the .o file. GOTOFF does not need to be checked here because it is |
| not pcrel. I am not sure if some of the others are ever used with |
| pcrel, but it is easier to be safe than sorry. */ |
| |
| #define TC_FORCE_RELOCATION_LOCAL(FIX) \ |
| (!(FIX)->fx_pcrel \ |
| || (FIX)->fx_plt \ |
| || (FIX)->fx_r_type == BFD_RELOC_ARM_GOT12 \ |
| || (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32 \ |
| || (FIX)->fx_r_type == BFD_RELOC_32 \ |
| || TC_FORCE_RELOCATION (FIX)) |
| |
| #define TC_CONS_FIX_NEW cons_fix_new_arm |
| |
| #define MAX_MEM_FOR_RS_ALIGN_CODE 31 |
| |
| /* For frags in code sections we need to record whether they contain |
| ARM code or THUMB code. This is that if they have to be aligned, |
| they can contain the correct type of no-op instruction. */ |
| #define TC_FRAG_TYPE int |
| #define TC_FRAG_INIT(fragp) arm_init_frag (fragp) |
| #define HANDLE_ALIGN(fragp) arm_handle_align (fragp) |
| |
| #define md_do_align(N, FILL, LEN, MAX, LABEL) \ |
| if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \ |
| { \ |
| arm_frag_align_code (N, MAX); \ |
| goto LABEL; \ |
| } |
| |
| #ifdef OBJ_ELF |
| # define DWARF2_LINE_MIN_INSN_LENGTH 2 |
| # define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt)) |
| # define md_elf_section_change_hook() arm_elf_change_section () |
| # define md_elf_section_type(str, len) arm_elf_section_type (str, len) |
| # define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" |
| # define LOCAL_LABEL_PREFIX '.' |
| # define TC_SEGMENT_INFO_TYPE enum mstate |
| |
| enum mstate |
| { |
| MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */ |
| MAP_DATA, |
| MAP_ARM, |
| MAP_THUMB |
| }; |
| |
| /* We want .cfi_* pseudo-ops for generating unwind info. */ |
| #define TARGET_USE_CFIPOP 1 |
| |
| /* The lr register is r14. */ |
| #define DWARF2_DEFAULT_RETURN_COLUMN 14 |
| |
| /* Registers are generally saved at negative offsets to the CFA. */ |
| #define DWARF2_CIE_DATA_ALIGNMENT -4 |
| |
| /* CFI hooks. */ |
| #define tc_regname_to_dw2regnum tc_arm_regname_to_dw2regnum |
| #define tc_cfi_frame_initial_instructions tc_arm_frame_initial_instructions |
| |
| #else /* Not OBJ_ELF. */ |
| #define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_" |
| #endif |
| |
| #if defined OBJ_ELF || defined OBJ_COFF |
| |
| # define EXTERN_FORCE_RELOC 1 |
| # define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX) |
| /* Values passed to md_apply_fix3 don't include the symbol value. */ |
| # define MD_APPLY_SYM_VALUE(FIX) 0 |
| # define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX) |
| |
| #endif |
| |
| extern void arm_frag_align_code (int, int); |
| extern void arm_validate_fix (struct fix *); |
| extern const char * elf32_arm_target_format (void); |
| extern void arm_elf_change_section (void); |
| extern int arm_force_relocation (struct fix *); |
| extern void arm_cleanup (void); |
| extern void arm_start_line_hook (void); |
| extern void arm_frob_label (symbolS *); |
| extern int arm_data_in_code (void); |
| extern char * arm_canonicalize_symbol_name (char *); |
| extern void arm_adjust_symtab (void); |
| extern void armelf_frob_symbol (symbolS *, int *); |
| extern void cons_fix_new_arm (fragS *, int, int, expressionS *); |
| extern void arm_init_frag (struct frag *); |
| extern void arm_handle_align (struct frag *); |
| extern bfd_boolean arm_fix_adjustable (struct fix *); |
| extern int arm_elf_section_type (const char *, size_t); |
| extern int tc_arm_regname_to_dw2regnum (const char *regname); |
| extern void tc_arm_frame_initial_instructions (void); |