1999-05-03 07:29:11 +00:00
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/* This file is tc-arm.h
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2005-03-03 11:52:12 +00:00
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Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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2004 Free Software Foundation, Inc.
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1999-05-03 07:29:11 +00:00
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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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2005-05-05 09:13:19 +00:00
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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1999-05-03 07:29:11 +00:00
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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 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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2002-09-05 00:01:18 +00:00
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struct fix;
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2004-04-22 09:49:03 +00:00
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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 (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
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# endif
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#elif defined OBJ_AIF
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# define TARGET_FORMAT "aif"
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#elif defined OBJ_COFF
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1999-05-03 07:29:11 +00:00
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# define ARM_BI_ENDIAN
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# if defined TE_PE
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2004-04-22 09:49:03 +00:00
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# if defined TE_EPOC
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# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
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2006-08-21 08:12:46 +00:00
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# elif defined TE_WINCE
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# define TARGET_FORMAT (target_big_endian ? "pe-arm-wince-big" : "pe-arm-wince-little")
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2004-04-22 09:49:03 +00:00
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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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1999-05-03 07:29:11 +00:00
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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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2004-04-22 09:49:03 +00:00
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#elif defined OBJ_ELF
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# define ARM_BI_ENDIAN
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# define TARGET_FORMAT elf32_arm_target_format ()
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1999-05-03 07:29:11 +00:00
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#endif
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2002-12-05 11:46:50 +00:00
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#define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)
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2005-09-06 Paul Brook <paul@codesourcery.com>
gas/
* config/tc-arm.c (arm_it): Add relax field.
(T16_32_TAB): Add addi, addis, add_pc, add_sp, dec_sp, inc_sp,
b, bcond, ldr_pc, ldr_pc2, ldr_sp, str_sp, subi, subis.
(do_t_add_sub, do_t_addr, do_t_branch, do_t_ldst,
do_t_mov_cmp): Allow relaxation.
(output_relax_insn): New function.
(put_thumb32_insn): New function.
(output_inst): Use new functions.
(md_assemble): Don't throw error on relaxable instructions.
(insns): Change "b" entry from TCE(...) to tCE(...).
(md_estimate_size_before_relax): Return 2.
(md_convert_frag, relax_immediate, relax_adr, relax_addsub,
relax_branch, arm_relax_frag): New functions.
(arm_force_relocation): Return 0 for Thumb-2 immediate operand
relocations.
* config/tc-arm.h (md_convert_frag): Remove definition.
(md_relax_frag): Define.
(arm_relax_frag): Add prototype.
gas/testsuite/
* gas/arm/thumb2_relax.d: New test.
* gas/arm/thumb2_relax.s: New test.
* gas/arm/thumb32.d: Adjust expected results to include relaxation.
* gas/arm/thumb32.s: Tweak for better coverage of relaxable
instructions. Remove load/store tests.
2005-09-06 16:59:24 +00:00
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#define md_relax_frag(segment, fragp, stretch) \
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arm_relax_frag(segment, fragp, stretch)
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extern int arm_relax_frag (asection *, struct frag *, long);
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1999-05-03 07:29:11 +00:00
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2006-05-02 13:09:18 +00:00
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#define md_optimize_expr(l,o,r) arm_optimize_expr (l, o, r)
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extern int arm_optimize_expr (expressionS *, operatorT, expressionS *);
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1999-05-03 07:29:11 +00:00
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#define md_cleanup() arm_cleanup ()
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#define md_start_line_hook() arm_start_line_hook ()
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#define tc_frob_label(S) arm_frob_label (S)
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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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2005-10-08 Paul Brook <paul@codesourcery.com>
bfd/
* elf32-arm.c: Move #include "elf/arm.h" after libbfd.h.
(NUM_KNOWN_ATTRIBUTES): Define.
(aeabi_attribute, aeabi_attribute_list): Define.
(elf32_arm_obj_tdata): Add known_eabi_attributes and
other_eabi_attributes.
(uleb128_size, is_default_attr, eabi_attr_size,
elf32_arm_eabi_attr_size, write_uleb128, write_eabi_attribute,
elf32_arm_set_eabi_attr_contents, elf32_arm_bfd_final_link,
elf32_arm_new_eabi_attr, attr_strdup, elf32_arm_add_eabi_attr_int,
elf32_arm_add_eabi_attr_compat, copy_eabi_attributes,
elf32_arm_merge_eabi_attributes): New functions.
(elf32_arm_copy_private_bfd_data): Copy EABI object attributes.
(elf32_arm_fake_sections): Handle .ARM.attributes.
(elf32_arm_parse_attributes): New function.
(elf32_arm_section_from_shdr): Use it.
(bfd_elf32_bfd_final_link): Define.
gas/
* config/tc-arm.c: Don't provide fallback default for CPU_DEFAULT.
(arm_arch_used, thumb_arch_used, selected_cpu, selected_cpu_name):
New variables.
(arm_cpu_option_table): Add canonical_name.
(arm_cpus): Populate canonical_name field.
(s_arm_eabi_attribute, s_arm_arch, s_arm_cpu, s_arm_fpu,
aeabi_set_public_attributes, arm_md_end): New functions.
(md_pseudo_table): Add "cpu", "arch", "fpu" and "eabi_attribute".
(md_assemble): Set thumb_arch_used and arm_arch_used.
(md_begin): Set defaut cpu if CPU_DEFAULT not defined.
* config/tc-arm.h (md_end): Define.
* doc/c-arm.texi: Document .cpu, .arch, .fpu and .eabi_attribute.
gas/testsuite/
* gas/arm/eabi_attr_1.s: New test.
* gas/arm/eabi_attr_1.d: New test.
* gas/arm/arm7t.d: Only disassemble code sections.
* gas/arm/bignum1.d: Ignore Arm object attribute sections.
* gas/arm/mapping.d: Ditto.
* gas/arm/unwind.d: Ditto.
* gas/elf/section0.d: Ditto.
* gas/elf/section1.d: Ditto.
* gas/elf/elf.exp: Set target_machine for Arm EABI based targets.
* gas/elf/section2.e-armeabi: New file.
include/elf/
* arm.h: Add prototypes for BFD object attribute routines.
ld/testsuite/
* ld-arm/arm-rel31.d: Ignore Arm object attribute sections.
* ld-arm/arm-target1-abs.d: Ditto.
* ld-arm/arm-target1-rel.d: Ditto.
* ld-arm/arm-target2-abs.d: Ditto.
* ld-arm/arm-target2-got-rel.d: Ditto.
* ld-arm/arm-target2-rel.d: Ditto.
2005-10-08 17:07:19 +00:00
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#ifdef OBJ_ELF
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#define md_end arm_md_end
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extern void arm_md_end (void);
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#endif
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1999-05-03 07:29:11 +00:00
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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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2005-05-27 07:11:45 +00:00
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#define TC_FIX_TYPE int
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#define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = 0)
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1999-10-27 18:13:28 +00:00
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1999-05-03 07:29:11 +00:00
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/* We need to keep some local information on symbols. */
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2004-04-22 09:49:03 +00:00
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#define TC_SYMFIELD_TYPE unsigned int
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1999-06-03 09:50:01 +00:00
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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 07:29:11 +00:00
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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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2003-11-21 00:24:40 +00:00
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#define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that supports interworking. */
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1999-05-03 07:29:11 +00:00
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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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2004-04-22 09:49:03 +00:00
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#define TC_START_LABEL(C,STR) (c == ':' || (c == '/' && arm_data_in_code ()))
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#define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
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#define obj_adjust_symtab() arm_adjust_symtab ()
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1999-05-03 07:29:11 +00:00
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#define LISTING_HEADER "ARM GAS "
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#define OPTIONAL_REGISTER_PREFIX '%'
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2005-06-13 15:34:39 +00:00
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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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1999-05-03 07:29:11 +00:00
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2002-09-05 00:01:18 +00:00
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/* This expression evaluates to true if the relocation is for a local
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object for which we still want to do the relocation at runtime.
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False if we are willing to perform this relocation while building
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the .o file. GOTOFF does not need to be checked here because it is
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not pcrel. I am not sure if some of the others are ever used with
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1999-05-03 07:29:11 +00:00
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pcrel, but it is easier to be safe than sorry. */
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2002-09-05 00:01:18 +00:00
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#define TC_FORCE_RELOCATION_LOCAL(FIX) \
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(!(FIX)->fx_pcrel \
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|| (FIX)->fx_plt \
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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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|| TC_FORCE_RELOCATION (FIX))
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1999-05-03 07:29:11 +00:00
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2006-05-02 13:09:18 +00:00
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/* Force output of R_ARM_REL32 relocations against thumb function symbols.
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This is needed to ensure the low bit is handled correctly. */
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#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
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(THUMB_IS_FUNC ((FIX)->fx_addsy) \
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|| !SEG_NORMAL (SEG))
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1999-05-03 07:29:11 +00:00
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#define TC_CONS_FIX_NEW cons_fix_new_arm
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2001-04-26 15:19:21 +00:00
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2001-05-06 10:11:33 +00:00
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#define MAX_MEM_FOR_RS_ALIGN_CODE 31
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2001-04-26 15:19:21 +00:00
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/* For frags in code sections we need to record whether they contain
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ARM code or THUMB code. This is that if they have to be aligned,
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they can contain the correct type of no-op instruction. */
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2004-04-22 09:49:03 +00:00
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#define TC_FRAG_TYPE int
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2001-04-26 15:19:21 +00:00
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#define TC_FRAG_INIT(fragp) arm_init_frag (fragp)
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2004-04-22 09:49:03 +00:00
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#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
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2001-04-26 15:19:21 +00:00
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#define md_do_align(N, FILL, LEN, MAX, LABEL) \
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if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
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{ \
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arm_frag_align_code (N, MAX); \
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goto LABEL; \
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}
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2004-04-22 09:49:03 +00:00
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2006-08-06 15:04:23 +00:00
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#define DWARF2_LINE_MIN_INSN_LENGTH 2
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/* The lr register is r14. */
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#define DWARF2_DEFAULT_RETURN_COLUMN 14
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/* Registers are generally saved at negative offsets to the CFA. */
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#define DWARF2_CIE_DATA_ALIGNMENT -4
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2004-04-22 09:49:03 +00:00
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#ifdef OBJ_ELF
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# define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
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# define md_elf_section_change_hook() arm_elf_change_section ()
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2004-10-01 12:59:42 +00:00
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# define md_elf_section_type(str, len) arm_elf_section_type (str, len)
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2004-04-22 09:49:03 +00:00
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# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
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2005-03-29 16:29:09 +00:00
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# define TC_SEGMENT_INFO_TYPE struct arm_segment_info_type
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2004-04-22 09:49:03 +00:00
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enum mstate
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{
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MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
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MAP_DATA,
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MAP_ARM,
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MAP_THUMB
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};
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2005-03-29 16:29:09 +00:00
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struct arm_segment_info_type
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{
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enum mstate mapstate;
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unsigned int marked_pr_dependency;
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};
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2004-10-25 12:26:04 +00:00
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/* We want .cfi_* pseudo-ops for generating unwind info. */
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#define TARGET_USE_CFIPOP 1
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/* CFI hooks. */
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#define tc_regname_to_dw2regnum tc_arm_regname_to_dw2regnum
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#define tc_cfi_frame_initial_instructions tc_arm_frame_initial_instructions
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2004-04-22 09:49:03 +00:00
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#else /* Not OBJ_ELF. */
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#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
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#endif
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#if defined OBJ_ELF || defined OBJ_COFF
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# define EXTERN_FORCE_RELOC 1
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# define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX)
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gas:
* cgen.c, cgen.h, tc.h, write.c, config/obj-coff.c
* config/tc-a29k.c, config/tc-alpha.c, config/tc-alpha.h
* config/tc-arc.c, config/tc-arc.h, config/tc-arm.c
* config/tc-arm.h, config/tc-avr.c, config/tc-avr.h
* config/tc-cris.c, config/tc-crx.c, config/tc-d10v.c
* config/tc-d10v.h, config/tc-d30v.c, config/tc-d30v.h
* config/tc-dlx.c, config/tc-dlx.h, config/tc-fr30.h
* config/tc-frv.c, config/tc-frv.h, config/tc-h8300.c
* config/tc-h8500.c, config/tc-hppa.c, config/tc-hppa.h
* config/tc-i370.c, config/tc-i370.h, config/tc-i386.c
* config/tc-i386.h, config/tc-i860.c, config/tc-i860.h
* config/tc-i960.c, config/tc-i960.h, config/tc-ia64.c
* config/tc-ip2k.c, config/tc-ip2k.h, config/tc-iq2000.c
* config/tc-iq2000.h, config/tc-m32r.c, config/tc-m32r.h
* config/tc-m68hc11.c, config/tc-m68hc11.h, config/tc-m68k.c
* config/tc-m68k.h, config/tc-m88k.c, config/tc-maxq.c
* config/tc-mcore.c, config/tc-mcore.h, config/tc-mips.c
* config/tc-mips.h, config/tc-mmix.c, config/tc-mn10200.c
* config/tc-mn10300.c, config/tc-msp430.c, config/tc-ns32k.c
* config/tc-openrisc.h, config/tc-or32.c, config/tc-or32.h
* config/tc-pdp11.c, config/tc-pj.c, config/tc-pj.h
* config/tc-ppc.c, config/tc-ppc.h, config/tc-s390.c
* config/tc-s390.h, config/tc-sh64.c, config/tc-sh.c
* config/tc-sh.h, config/tc-sparc.c, config/tc-sparc.h
* config/tc-tahoe.c, config/tc-tic30.c, config/tc-tic4x.c
* config/tc-tic54x.c, config/tc-tic80.c, config/tc-v850.c
* config/tc-v850.h, config/tc-vax.c, config/tc-vax.h
* config/tc-w65.c, config/tc-xstormy16.c, config/tc-xstormy16.h
* config/tc-xtensa.c, config/tc-z8k.c:
Replace all instances of the string "_apply_fix3" with
"_apply_fix".
* po/POTFILES.in, po/gas.pot: Regenerate.
bfd:
* coff-i386.c: Change md_apply_fix3 to md_apply_fix in comment.
cgen:
* doc/porting.texi: Change all mention of md_apply_fix3 and
gas_cgen_md_apply_fix3 to md_apply_fix and gas_cgen_md_apply_fix
respectively.
2005-06-07 17:54:22 +00:00
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/* Values passed to md_apply_fix don't include the symbol value. */
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2004-04-22 09:49:03 +00:00
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# define MD_APPLY_SYM_VALUE(FIX) 0
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# define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX)
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#endif
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gas:
* config/tc-arm.c (T_OPCODE_BRANCH, encode_arm_addr_mode_2)
(encode_arm_addr_mode_3, encode_arm_cp_address, do_blx, do_t_blx)
(do_t_branch, insns [b, bl]): Don't encode pipeline offset.
(s_arm_elf_cons): Disallow use of (plt) suffix.
(do_adrl): Adjust X_add_number unconditionally.
(md_pcrel_from): Rename md_pcrel_from_section, add second segT
argument. Handle all adjustment for pipeline offset here.
(md_apply_fix): No need to undo work of md_pcrel_from. No
need to extract pre-encoded pipeline adjustments from various
branch instructions. Generally, assume instructions are already
all-bits-zero in the field being fixed up. Remove all OBJ_ELF
special cases. Handle BFD_RELOC_ARM_PLT32 like
BFD_RELOC_ARM_PCREL_BRANCH.
(tc_gen_reloc): Remove OBJ_ELF special case.
* config/tc-arm.c: Define MD_PCREL_FROM_SECTION.
gas/testsuite:
* gas/arm/arm.exp: Don't special case ldconst, arm7t, or copro
for *-wince-*.
* gas/arm/wince_arm7t.d, gas/arm/wince_copro.d
* gas/arm/wince_ldconst.d: Delete.
2005-06-30 18:33:17 +00:00
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#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
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extern long md_pcrel_from_section (struct fix *, segT);
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2004-04-22 09:49:03 +00:00
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extern void arm_frag_align_code (int, int);
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extern void arm_validate_fix (struct fix *);
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extern const char * elf32_arm_target_format (void);
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extern void arm_elf_change_section (void);
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extern int arm_force_relocation (struct fix *);
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extern void arm_cleanup (void);
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extern void arm_start_line_hook (void);
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extern void arm_frob_label (symbolS *);
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extern int arm_data_in_code (void);
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extern char * arm_canonicalize_symbol_name (char *);
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extern void arm_adjust_symtab (void);
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extern void armelf_frob_symbol (symbolS *, int *);
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extern void cons_fix_new_arm (fragS *, int, int, expressionS *);
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extern void arm_init_frag (struct frag *);
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extern void arm_handle_align (struct frag *);
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extern bfd_boolean arm_fix_adjustable (struct fix *);
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2004-10-01 12:59:42 +00:00
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extern int arm_elf_section_type (const char *, size_t);
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2006-05-19 11:26:11 +00:00
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extern int tc_arm_regname_to_dw2regnum (char *regname);
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2004-10-25 12:26:04 +00:00
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extern void tc_arm_frame_initial_instructions (void);
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2006-08-06 15:04:23 +00:00
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#ifdef TE_PE
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#define O_secrel O_md1
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#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
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void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
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#endif /* TE_PE */
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