1999-05-03 09:29:11 +02:00
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/* This file is tc-arm.h
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2001-03-09 00:24:26 +01:00
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Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
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Add support for storing local symbols in a small structure to save
memory when assembling large files.
* as.h: Don't include struc-symbol.h.
(symbolS): Add typedef.
* symbols.c: Include struc-symbol.h.
(local_hash): New static variable.
(save_symbol_name): New static function, from symbol_create.
(symbol_create): Call save_symbol_name.
(local_symbol_count): New static variable.
(local_symbol_conversion_count): Likewise.
(LOCAL_SYMBOL_CHECK): Define.
(local_symbol_make): New static function.
(local_symbol_convert): New static function.
(colon): Handle local symbols. Create local symbol for local
label name.
(symbol_table_insert): Handle local symbols.
(symbol_find_or_make): Create local symbol for local label name.
(symbol_find_base): Check for local symbol.
(symbol_append, symbol_insert): Check for local symbols.
(symbol_clear_list_pointers, symbol_remove): Likewise.
(verify_symbol_chain): Likewise.
(copy_symbol_attributes): Likewise.
(resolve_symbol_value): Handle local symbols.
(resolve_local_symbol): New static function.
(resolve_local_symbol_values): New function.
(S_GET_VALUE, S_SET_VALUE): Handle local symbols.
(S_IS_FUNCTION, S_IS_EXTERNAL, S_IS_WEAK, S_IS_COMMON): Likewise.
(S_IS_DEFINED, S_IS_DEBUG, S_IS_LOCAL, S_GET_NAME): Likewise.
(S_GET_SEGMENT, S_SET_SEGMENT, S_SET_EXTERNAL): Likewise.
(S_CLEAR_EXTERNAL, S_SET_WEAK, S_SET_NAME): Likewise.
(symbol_previous, symbol_next): New functions.
(symbol_get_value_expression): Likewise.
(symbol_set_value_expression): Likewise.
(symbol_set_frag, symbol_get_frag): Likewise.
(symbol_mark_used, symbol_clear_used, symbol_used_p): Likewise.
(symbol_mark_used_in_reloc): Likewise.
(symbol_clear_used_in_reloc, symbol_used_in_reloc_p): Likewise.
(symbol_mark_mri_common, symbol_clear_mri_common): Likewise.
(symbol_mri_common_p): Likewise.
(symbol_mark_written, symbol_clear_written): Likewise.
(symbol_written_p): Likewise.
(symbol_mark_resolved, symbol_resolved_p): Likewise.
(symbol_section_p, symbol_equated_p): Likewise.
(symbol_constant_p): Likewise.
(symbol_get_bfdsym, symbol_set_bfdsym): Likewise.
(symbol_get_obj, symbol_set_obj): Likewise.
(symbol_get_tc, symbol_set_tc): Likewise.
(symbol_begin): Initialize local_hash.
(print_symbol_value_1): Handle local symbols.
(symbol_print_statistics): Print local symbol statistics.
* symbols.h: Include "struc-symbol.h" if not BFD_ASSEMBLER.
Declare new symbols.c functions. Move many declarations here from
struc-symbol.h.
(SYMBOLS_NEED_BACKPOINTERS): Define if needed.
* struc-symbol.h (SYMBOLS_NEED_BACKPOINTERS): Don't set.
(struct symbol): Move bsym to make it clearly the first field.
Remove TARGET_SYMBOL_FIELDS.
(symbolS): Don't typedef.
(struct broken_word): Remove.
(N_TYPE_seg, seg_N_TYPE): Move to symbol.h.
(SEGMENT_TO_SYMBOL_TYPE, N_REGISTER): Likewise.
(symbol_clear_list_pointers): Likewise.
(symbol_insert, symbol_remove): Likewise.
(symbol_previous, symbol_append): Likewise.
(verify_symbol_chain, verify_symbol_chain_2): Likewise.
(struct local_symbol): Define.
(local_symbol_converted_p, local_symbol_mark_converted): Define.
(local_symbol_resolved_p, local_symbol_mark_resolved): Define.
(local_symbol_get_frag, local_symbol_set_frag): Define.
(local_symbol_get_real_symbol): Define.
(local_symbol_set_real_symbol): Define.
Define.
* write.c (write_object_file): Call resolve_local_symbol_values.
* config/obj-ecoff.h (OBJ_SYMFIELD_TYPE): Define.
(TARGET_SYMBOL_FIELDS): Don't define.
* config/obj-elf.h (OBJ_SYMFIELD_TYPE): Add local field. If
ECOFF_DEBUGGING, add ECOFF fields.
(ELF_TARGET_SYMBOL_FIELDS, TARGET_SYMBOL_FIELDS): Don't define.
* config/obj-multi.h (struct elf_obj_sy): Add local field. If
ECOFF_DEBUGGING, add ECOFF fields.
(ELF_TARGET_SYMBOL_FIELDS, TARGET_SYMBOL_FIELDS): Don't define.
(ECOFF_DEBUG_TARGET_SYMBOL_FIELDS): Don't define.
* config/tc-mcore.h: Don't include struc-symbol.h.
(TARGET_SYMBOL_FIELDS): Don't define.
(struct mcore_tc_sy): Define.
(TC_SYMFIELD_TYPE): Define.
* Many files: Use symbolS instead of struct symbol. Use new
accessor functions rather than referring to symbolS fields
directly.
* read.c (s_mri_common): Don't add in value of line_label.
* config/tc-mips.c (md_apply_fix): Correct parenthesization when
checking for SEC_LINK_ONCE.
* config/tc-sh.h (sh_fix_adjustable): Declare.
1999-06-03 02:29:48 +02:00
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Free Software Foundation, Inc.
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1999-05-03 09:29:11 +02:00
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Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
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Modified by David Taylor (dtaylor@armltd.co.uk)
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#define TC_ARM 1
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#ifndef TARGET_BYTES_BIG_ENDIAN
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#define TARGET_BYTES_BIG_ENDIAN 0
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#endif
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#define WORKING_DOT_WORD
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#define COFF_MAGIC ARMMAGIC
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#define TARGET_ARCH bfd_arch_arm
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#define AOUT_MACHTYPE 0
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#define DIFF_EXPR_OK
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#ifdef LITTLE_ENDIAN
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#undef LITTLE_ENDIAN
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#endif
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#ifdef BIG_ENDIAN
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#undef BIG_ENDIAN
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#endif
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#define LITTLE_ENDIAN 1234
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#define BIG_ENDIAN 4321
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#if defined OBJ_AOUT
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#if defined TE_RISCIX
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# define TARGET_FORMAT "a.out-riscix"
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#elif defined TE_LINUX
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# define ARM_BI_ENDIAN
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# define TARGET_FORMAT "a.out-arm-linux"
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#elif defined TE_NetBSD
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# define TARGET_FORMAT "a.out-arm-netbsd"
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#else
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# define ARM_BI_ENDIAN
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# define TARGET_FORMAT \
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(target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
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#endif
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#endif /* OBJ_AOUT */
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#ifdef OBJ_AIF
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#define TARGET_FORMAT "aif"
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#endif
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#if defined OBJ_COFF || defined OBJ_ELF
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# define ARM_BI_ENDIAN
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2000-09-15 03:06:52 +02:00
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1999-05-03 09:29:11 +02:00
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# define TC_VALIDATE_FIX(fixP, segType, Label) \
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if (arm_validate_fix (fixP)) add_symbolP = fixP->fx_addsy
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extern boolean arm_validate_fix PARAMS ((struct fix *));
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#endif
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2000-09-15 03:06:52 +02:00
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1999-05-03 09:29:11 +02:00
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#ifdef OBJ_COFF
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# if defined TE_PE
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# define TC_FORCE_RELOCATION(x) ((x)->fx_r_type == BFD_RELOC_RVA)
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# ifdef TE_EPOC
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# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
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# else
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# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
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# endif
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# else
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# define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
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# endif
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#endif
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#ifdef OBJ_ELF
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# define TARGET_FORMAT elf32_arm_target_format()
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extern const char * elf32_arm_target_format PARAMS ((void));
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2000-09-15 03:06:52 +02:00
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1999-05-03 09:29:11 +02:00
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# define TC_FORCE_RELOCATION(fixp) arm_force_relocation (fixp)
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extern int arm_force_relocation PARAMS ((struct fix *));
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#endif
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#define md_convert_frag(b, s, f) {as_fatal (_("arm convert_frag\n"));}
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#define md_cleanup() arm_cleanup ()
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extern void arm_cleanup PARAMS ((void));
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#define md_start_line_hook() arm_start_line_hook ()
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extern void arm_start_line_hook PARAMS ((void));
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#define tc_frob_label(S) arm_frob_label (S)
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Add support for storing local symbols in a small structure to save
memory when assembling large files.
* as.h: Don't include struc-symbol.h.
(symbolS): Add typedef.
* symbols.c: Include struc-symbol.h.
(local_hash): New static variable.
(save_symbol_name): New static function, from symbol_create.
(symbol_create): Call save_symbol_name.
(local_symbol_count): New static variable.
(local_symbol_conversion_count): Likewise.
(LOCAL_SYMBOL_CHECK): Define.
(local_symbol_make): New static function.
(local_symbol_convert): New static function.
(colon): Handle local symbols. Create local symbol for local
label name.
(symbol_table_insert): Handle local symbols.
(symbol_find_or_make): Create local symbol for local label name.
(symbol_find_base): Check for local symbol.
(symbol_append, symbol_insert): Check for local symbols.
(symbol_clear_list_pointers, symbol_remove): Likewise.
(verify_symbol_chain): Likewise.
(copy_symbol_attributes): Likewise.
(resolve_symbol_value): Handle local symbols.
(resolve_local_symbol): New static function.
(resolve_local_symbol_values): New function.
(S_GET_VALUE, S_SET_VALUE): Handle local symbols.
(S_IS_FUNCTION, S_IS_EXTERNAL, S_IS_WEAK, S_IS_COMMON): Likewise.
(S_IS_DEFINED, S_IS_DEBUG, S_IS_LOCAL, S_GET_NAME): Likewise.
(S_GET_SEGMENT, S_SET_SEGMENT, S_SET_EXTERNAL): Likewise.
(S_CLEAR_EXTERNAL, S_SET_WEAK, S_SET_NAME): Likewise.
(symbol_previous, symbol_next): New functions.
(symbol_get_value_expression): Likewise.
(symbol_set_value_expression): Likewise.
(symbol_set_frag, symbol_get_frag): Likewise.
(symbol_mark_used, symbol_clear_used, symbol_used_p): Likewise.
(symbol_mark_used_in_reloc): Likewise.
(symbol_clear_used_in_reloc, symbol_used_in_reloc_p): Likewise.
(symbol_mark_mri_common, symbol_clear_mri_common): Likewise.
(symbol_mri_common_p): Likewise.
(symbol_mark_written, symbol_clear_written): Likewise.
(symbol_written_p): Likewise.
(symbol_mark_resolved, symbol_resolved_p): Likewise.
(symbol_section_p, symbol_equated_p): Likewise.
(symbol_constant_p): Likewise.
(symbol_get_bfdsym, symbol_set_bfdsym): Likewise.
(symbol_get_obj, symbol_set_obj): Likewise.
(symbol_get_tc, symbol_set_tc): Likewise.
(symbol_begin): Initialize local_hash.
(print_symbol_value_1): Handle local symbols.
(symbol_print_statistics): Print local symbol statistics.
* symbols.h: Include "struc-symbol.h" if not BFD_ASSEMBLER.
Declare new symbols.c functions. Move many declarations here from
struc-symbol.h.
(SYMBOLS_NEED_BACKPOINTERS): Define if needed.
* struc-symbol.h (SYMBOLS_NEED_BACKPOINTERS): Don't set.
(struct symbol): Move bsym to make it clearly the first field.
Remove TARGET_SYMBOL_FIELDS.
(symbolS): Don't typedef.
(struct broken_word): Remove.
(N_TYPE_seg, seg_N_TYPE): Move to symbol.h.
(SEGMENT_TO_SYMBOL_TYPE, N_REGISTER): Likewise.
(symbol_clear_list_pointers): Likewise.
(symbol_insert, symbol_remove): Likewise.
(symbol_previous, symbol_append): Likewise.
(verify_symbol_chain, verify_symbol_chain_2): Likewise.
(struct local_symbol): Define.
(local_symbol_converted_p, local_symbol_mark_converted): Define.
(local_symbol_resolved_p, local_symbol_mark_resolved): Define.
(local_symbol_get_frag, local_symbol_set_frag): Define.
(local_symbol_get_real_symbol): Define.
(local_symbol_set_real_symbol): Define.
Define.
* write.c (write_object_file): Call resolve_local_symbol_values.
* config/obj-ecoff.h (OBJ_SYMFIELD_TYPE): Define.
(TARGET_SYMBOL_FIELDS): Don't define.
* config/obj-elf.h (OBJ_SYMFIELD_TYPE): Add local field. If
ECOFF_DEBUGGING, add ECOFF fields.
(ELF_TARGET_SYMBOL_FIELDS, TARGET_SYMBOL_FIELDS): Don't define.
* config/obj-multi.h (struct elf_obj_sy): Add local field. If
ECOFF_DEBUGGING, add ECOFF fields.
(ELF_TARGET_SYMBOL_FIELDS, TARGET_SYMBOL_FIELDS): Don't define.
(ECOFF_DEBUG_TARGET_SYMBOL_FIELDS): Don't define.
* config/tc-mcore.h: Don't include struc-symbol.h.
(TARGET_SYMBOL_FIELDS): Don't define.
(struct mcore_tc_sy): Define.
(TC_SYMFIELD_TYPE): Define.
* Many files: Use symbolS instead of struct symbol. Use new
accessor functions rather than referring to symbolS fields
directly.
* read.c (s_mri_common): Don't add in value of line_label.
* config/tc-mips.c (md_apply_fix): Correct parenthesization when
checking for SEC_LINK_ONCE.
* config/tc-sh.h (sh_fix_adjustable): Declare.
1999-06-03 02:29:48 +02:00
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extern void arm_frob_label PARAMS ((symbolS *));
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1999-05-03 09:29:11 +02:00
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/* We also need to mark assembler created symbols: */
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#define tc_frob_fake_label(S) arm_frob_label (S)
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/* NOTE: The fake label creation in stabs.c:s_stab_generic() has
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deliberately not been updated to mark assembler created stabs
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symbols as Thumb. */
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1999-10-27 20:13:28 +02:00
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#define TC_FIX_TYPE PTR
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#define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL)
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2001-01-11 02:40:18 +01:00
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#if defined OBJ_ELF || defined OBJ_COFF
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1999-10-27 20:13:28 +02:00
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#include "write.h" /* For definition of fixS */
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1999-05-03 09:29:11 +02:00
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#define obj_fix_adjustable(fixP) arm_fix_adjustable (fixP)
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1999-10-27 20:13:28 +02:00
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boolean arm_fix_adjustable PARAMS ((fixS *));
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2000-08-22 06:52:40 +02:00
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/* This arranges for gas/write.c to not apply a relocation if
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obj_fix_adjustable() says it is not adjustable. */
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#define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP)
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1999-05-03 09:29:11 +02:00
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#else
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#define obj_fix_adjustable(fixP) 0
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#endif
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/* We need to keep some local information on symbols. */
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#define TC_SYMFIELD_TYPE unsigned int
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1999-06-03 11:50:01 +02:00
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#define ARM_GET_FLAG(s) (*symbol_get_tc (s))
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#define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) |= (v))
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#define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v))
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1999-05-03 09:29:11 +02:00
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#define ARM_FLAG_THUMB (1 << 0) /* The symbol is a Thumb symbol rather than an Arm symbol. */
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#define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that suppports interworking. */
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#define THUMB_FLAG_FUNC (1 << 2) /* The symbol is attached to the start of a Thumb function. */
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#define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
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#define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
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#define THUMB_IS_FUNC(s) (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
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#define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
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#define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
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#define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
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#define TC_START_LABEL(C,STR) \
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(c == ':' || (c == '/' && arm_data_in_code ()))
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int arm_data_in_code PARAMS ((void));
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#define tc_canonicalize_symbol_name(str) \
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arm_canonicalize_symbol_name (str);
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char * arm_canonicalize_symbol_name PARAMS ((char *));
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#define obj_adjust_symtab() arm_adjust_symtab ()
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extern void arm_adjust_symtab PARAMS ((void));
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#ifdef OBJ_ELF
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1999-10-27 20:13:28 +02:00
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#define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
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void armelf_frob_symbol PARAMS ((symbolS *, int *));
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1999-05-03 09:29:11 +02:00
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#endif
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#define tc_aout_pre_write_hook(x) {;} /* not used */
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#define LISTING_HEADER "ARM GAS "
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#define OPTIONAL_REGISTER_PREFIX '%'
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#define md_operand(x)
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#define TC_HANDLES_FX_DONE
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#define MD_APPLY_FIX3
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#define LOCAL_LABEL(name) (name[0] == '.' && (name[1] == 'L'))
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#define LOCAL_LABELS_FB 1
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1999-07-15 03:33:07 +02:00
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#ifdef OBJ_ELF
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#define LOCAL_LABEL_PREFIX '.'
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#endif
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1999-05-03 09:29:11 +02:00
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/* This expression evaluates to false if the relocation is for a local object
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for which we still want to do the relocation at runtime. True if we
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are willing to perform this relocation while building the .o file.
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This is only used for pcrel relocations, so GOTOFF does not need to be
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checked here. I am not sure if some of the others are ever used with
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pcrel, but it is easier to be safe than sorry. */
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#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
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( (FIX)->fx_r_type != BFD_RELOC_ARM_GOT12 \
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&& (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32 \
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&& (FIX)->fx_r_type != BFD_RELOC_32)
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|
|
|
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|
|
|
#define TC_CONS_FIX_NEW cons_fix_new_arm
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|
|
|
extern void cons_fix_new_arm PARAMS ((fragS *, int, int, expressionS *));
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|
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/* Don't allow symbols to be discarded on GOT related relocs,
|
2000-09-15 03:06:52 +02:00
|
|
|
nor on globals. */
|
1999-05-03 09:29:11 +02:00
|
|
|
#define tc_fix_adjustable(x) (\
|
|
|
|
((x)->fx_r_type == BFD_RELOC_ARM_PLT32 \
|
|
|
|
|| (x)->fx_r_type == BFD_RELOC_ARM_GOT32 \
|
|
|
|
|| (x)->fx_r_type == BFD_RELOC_ARM_GOTOFF \
|
|
|
|
|| S_IS_EXTERN ((x)->fx_addsy) \
|
|
|
|
|| S_IS_WEAK ((x)->fx_addsy)) ? 0 : 1)
|
2000-09-15 03:06:52 +02:00
|
|
|
|
1999-05-03 09:29:11 +02:00
|
|
|
#ifdef OBJ_ELF
|
|
|
|
#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
|
|
|
|
#else
|
|
|
|
#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
|
|
|
|
#endif
|
2000-10-25 21:15:34 +02:00
|
|
|
|
|
|
|
#ifdef OBJ_ELF
|
|
|
|
#define DWARF2_LINE_MIN_INSN_LENGTH 2
|
|
|
|
#endif
|
2001-04-26 17:19:21 +02:00
|
|
|
|
2001-05-06 12:11:33 +02:00
|
|
|
#define MAX_MEM_FOR_RS_ALIGN_CODE 31
|
|
|
|
|
2001-04-26 17:19:21 +02:00
|
|
|
/* 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)
|
|
|
|
extern void arm_init_frag PARAMS ((struct frag *));
|
|
|
|
|
|
|
|
#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
|
|
|
|
extern void arm_handle_align PARAMS ((struct frag *));
|
|
|
|
|
|
|
|
#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; \
|
|
|
|
}
|
|
|
|
extern void arm_frag_align_code PARAMS ((int, int));
|