1999-05-03 09:29:06 +02:00
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/* ARM ELF support for BFD.
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2005-03-03 12:58:10 +01:00
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Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004
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Free Software Foundation, Inc.
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1999-05-03 09:29:06 +02:00
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This file is part of BFD, the Binary File Descriptor library.
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This program 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 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifndef _ELF_ARM_H
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#define _ELF_ARM_H
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#include "elf/reloc-macros.h"
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/* Processor specific flags for the ELF header e_flags field. */
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#define EF_ARM_RELEXEC 0x01
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#define EF_ARM_HASENTRY 0x02
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2001-02-28 11:11:36 +01:00
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#define EF_ARM_INTERWORK 0x04
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#define EF_ARM_APCS_26 0x08
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#define EF_ARM_APCS_FLOAT 0x10
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#define EF_ARM_PIC 0x20
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#define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */
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#define EF_ARM_NEW_ABI 0x80
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#define EF_ARM_OLD_ABI 0x100
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#define EF_ARM_SOFT_FLOAT 0x200
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2002-01-16 12:35:18 +01:00
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#define EF_ARM_VFP_FLOAT 0x400
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2003-02-10 11:44:46 +01:00
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#define EF_ARM_MAVERICK_FLOAT 0x800
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2001-02-28 11:11:36 +01:00
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2005-03-18 18:06:16 +01:00
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/* Frame unwind information */
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#define PT_ARM_EXIDX (PT_LOPROC + 1)
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2001-02-28 11:11:36 +01:00
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/* Other constants defined in the ARM ELF spec. version B-01. */
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2000-04-07 01:18:18 +02:00
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#define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */
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2001-02-28 11:11:36 +01:00
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#define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */
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#define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */
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2000-04-07 01:18:18 +02:00
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#define EF_ARM_EABIMASK 0xFF000000
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2004-03-24 00:05:52 +01:00
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/* Constants defined in AAELF. */
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#define EF_ARM_BE8 0x00800000
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#define EF_ARM_LE8 0x00400000
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2000-04-07 01:18:18 +02:00
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#define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
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#define EF_ARM_EABI_UNKNOWN 0x00000000
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#define EF_ARM_EABI_VER1 0x01000000
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2001-02-28 11:11:36 +01:00
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#define EF_ARM_EABI_VER2 0x02000000
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2004-03-24 00:05:52 +01:00
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#define EF_ARM_EABI_VER3 0x03000000
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2004-10-12 16:17:08 +02:00
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#define EF_ARM_EABI_VER4 0x04000000
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2000-04-07 01:18:18 +02:00
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1999-05-03 09:29:06 +02:00
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/* Local aliases for some flags to match names used by COFF port. */
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2001-02-28 11:11:36 +01:00
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#define F_INTERWORK EF_ARM_INTERWORK
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#define F_APCS26 EF_ARM_APCS_26
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#define F_APCS_FLOAT EF_ARM_APCS_FLOAT
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#define F_PIC EF_ARM_PIC
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#define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT
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2002-01-16 12:35:18 +01:00
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#define F_VFP_FLOAT EF_ARM_VFP_FLOAT
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1999-05-03 09:29:06 +02:00
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2000-01-27 21:05:27 +01:00
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/* Additional symbol types for Thumb. */
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#define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */
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#define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */
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1999-05-03 09:29:06 +02:00
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2004-10-01 14:59:35 +02:00
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/* Additional section types. */
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#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */
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2000-01-27 21:05:27 +01:00
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/* ARM-specific values for sh_flags. */
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#define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */
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#define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */
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1999-05-03 09:29:06 +02:00
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2000-01-27 21:05:27 +01:00
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/* ARM-specific program header flags. */
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#define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */
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2000-04-07 01:18:18 +02:00
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#define PF_ARM_PI 0x20000000 /* Segment is position-independent. */
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#define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */
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1999-05-03 09:29:06 +02:00
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/* Relocation types. */
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2000-04-08 02:09:26 +02:00
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1999-05-03 09:29:06 +02:00
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START_RELOC_NUMBERS (elf_arm_reloc_type)
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2000-04-08 02:09:26 +02:00
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RELOC_NUMBER (R_ARM_NONE, 0)
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RELOC_NUMBER (R_ARM_PC24, 1)
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RELOC_NUMBER (R_ARM_ABS32, 2)
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RELOC_NUMBER (R_ARM_REL32, 3)
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#ifdef OLD_ARM_ABI
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RELOC_NUMBER (R_ARM_ABS8, 4)
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RELOC_NUMBER (R_ARM_ABS16, 5)
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RELOC_NUMBER (R_ARM_ABS12, 6)
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RELOC_NUMBER (R_ARM_THM_ABS5, 7)
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RELOC_NUMBER (R_ARM_THM_PC22, 8)
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RELOC_NUMBER (R_ARM_SBREL32, 9)
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RELOC_NUMBER (R_ARM_AMP_VCALL9, 10)
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RELOC_NUMBER (R_ARM_THM_PC11, 11) /* Cygnus extension to abi: Thumb unconditional branch. */
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RELOC_NUMBER (R_ARM_THM_PC9, 12) /* Cygnus extension to abi: Thumb conditional branch. */
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RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 13)
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RELOC_NUMBER (R_ARM_GNU_VTENTRY, 14)
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#else /* not OLD_ARM_ABI */
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RELOC_NUMBER (R_ARM_PC13, 4)
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RELOC_NUMBER (R_ARM_ABS16, 5)
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RELOC_NUMBER (R_ARM_ABS12, 6)
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RELOC_NUMBER (R_ARM_THM_ABS5, 7)
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RELOC_NUMBER (R_ARM_ABS8, 8)
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RELOC_NUMBER (R_ARM_SBREL32, 9)
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RELOC_NUMBER (R_ARM_THM_PC22, 10)
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RELOC_NUMBER (R_ARM_THM_PC8, 11)
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RELOC_NUMBER (R_ARM_AMP_VCALL9, 12)
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RELOC_NUMBER (R_ARM_SWI24, 13)
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RELOC_NUMBER (R_ARM_THM_SWI8, 14)
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RELOC_NUMBER (R_ARM_XPC25, 15)
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RELOC_NUMBER (R_ARM_THM_XPC22, 16)
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bfd/
* bfd-in2.h, libbfd.h: Regenerated.
* reloc.c: Add ARM TLS relocations.
* elf32-arm.c (elf32_arm_howto_table): Add dynamic TLS
relocations.
(elf32_arm_tls_gd32_howto, elf32_arm_tls_ldo32_howto)
(elf32_arm_tls_ldm32_howto, elf32_arm_tls_le32_howto)
(elf32_arm_tls_ie32_howto): New.
(elf32_arm_howto_from_type): Support TLS relocations.
(elf32_arm_reloc_map): Likewise.
(elf32_arm_reloc_type_lookup): Likewise.
(TCB_SIZE): Define.
(struct elf32_arm_obj_tdata): New.
(elf32_arm_tdata, elf32_arm_local_got_tls_type): Define.
(elf32_arm_mkobject): New function.
(struct elf32_arm_relocs_copied): Add pc_count.
(elf32_arm_hash_entry, GOT_UNKNOWN, GOT_NORMAL, GOT_TLS_GD)
(GOT_TLS_IE): Define.
(struct elf32_arm_link_hash_table): Add tls_ldm_got.
(elf32_arm_link_hash_newfunc): Initialize tls_type.
(elf32_arm_copy_indirect_symbol): Copy pc_count and tls_type.
(elf32_arm_link_hash_table_create): Initialize tls_ldm_got.
(dtpoff_base, tpoff): New functions.
(elf32_arm_final_link_relocate): Handle TLS relocations.
(IS_ARM_TLS_RELOC): Define.
(elf32_arm_relocate_section): Warn about TLS mismatches.
(elf32_arm_gc_sweep_hook): Handle TLS relocations and pc_count.
(elf32_arm_check_relocs): Detect invalid symbol indexes. Handle
TLS relocations and pc_count.
(elf32_arm_adjust_dynamic_symbol): Check non_got_ref.
(allocate_dynrelocs): Handle TLS. Bind REL32 relocs to local
calls.
(elf32_arm_size_dynamic_sections): Handle TLS.
(elf32_arm_finish_dynamic_symbol): Likewise.
(bfd_elf32_mkobject): Define.
gas/
* config/tc-arm.c (arm_parse_reloc): Add TLS relocations.
(md_apply_fix3): Mark TLS symbols.
(tc_gen_reloc): Handle TLS relocations.
(arm_fix_adjustable): Ignore TLS relocations.
(s_arm_elf_cons): Support expressions after decorated symbols.
gas/testuite/
* gas/arm/tls.s, gas/arm/tls.d: New files.
* gas/arm/arm.exp: Run TLS test.
include/elf/
* arm.h: Add TLS relocations.
ld/testsuite/
* ld-arm/tls-lib.s, ld-arm/tls-lib.d, ld-arm/tls-lib.r,
ld-arm/tls-app.s, ld-arm/tls-app.d, ld-arm/tls-app.r: New files.
* ld-arm/arm-lib.ld, ld-arm/arm-dyn.ld: Increase data segment
alignment.
* ld-arm/arm-elf.exp: Run TLS tests.
2005-03-29 18:54:22 +02:00
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RELOC_NUMBER (R_ARM_TLS_DTPMOD32, 17)
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RELOC_NUMBER (R_ARM_TLS_DTPOFF32, 18)
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RELOC_NUMBER (R_ARM_TLS_TPOFF32, 19)
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2000-04-08 02:09:26 +02:00
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#endif /* not OLD_ARM_ABI */
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RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */
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RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */
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RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */
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RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */
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RELOC_NUMBER (R_ARM_GOTOFF, 24) /* 32 bit offset to GOT. */
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RELOC_NUMBER (R_ARM_GOTPC, 25) /* 32 bit PC relative offset to GOT. */
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RELOC_NUMBER (R_ARM_GOT32, 26) /* 32 bit GOT entry. */
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RELOC_NUMBER (R_ARM_PLT32, 27) /* 32 bit PLT address. */
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#ifdef OLD_ARM_ABI
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FAKE_RELOC (FIRST_INVALID_RELOC, 28)
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FAKE_RELOC (LAST_INVALID_RELOC, 249)
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#else /* not OLD_ARM_ABI */
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2004-10-27 22:48:22 +02:00
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RELOC_NUMBER (R_ARM_CALL, 28)
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RELOC_NUMBER (R_ARM_JUMP24, 29)
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FAKE_RELOC (FIRST_INVALID_RELOC1, 30)
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2001-02-28 11:11:36 +01:00
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FAKE_RELOC (LAST_INVALID_RELOC1, 31)
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RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32)
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RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33)
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RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34)
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2004-08-06 18:18:11 +02:00
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RELOC_NUMBER (R_ARM_LDR_SBREL_11_0, 35)
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RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 36)
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RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 37)
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2004-09-13 16:14:30 +02:00
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RELOC_NUMBER (R_ARM_TARGET1, 38)
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2004-08-06 18:18:11 +02:00
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RELOC_NUMBER (R_ARM_ROSEGREL32, 39)
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RELOC_NUMBER (R_ARM_V4BX, 40)
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2004-09-17 14:35:00 +02:00
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RELOC_NUMBER (R_ARM_TARGET2, 41)
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RELOC_NUMBER (R_ARM_PREL31, 42)
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2004-08-06 18:18:11 +02:00
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FAKE_RELOC (FIRST_INVALID_RELOC2, 43)
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2004-09-17 14:35:00 +02:00
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FAKE_RELOC (LAST_INVALID_RELOC2, 94)
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RELOC_NUMBER (R_ARM_GOT_ABS, 95)
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RELOC_NUMBER (R_ARM_GOT_PREL, 96)
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RELOC_NUMBER (R_ARM_GOT_BREL12, 97)
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RELOC_NUMBER (R_ARM_GOTOFF12, 98)
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RELOC_NUMBER (R_ARM_GOTRELAX, 99)
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2000-04-08 02:09:26 +02:00
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RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100)
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RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101)
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RELOC_NUMBER (R_ARM_THM_PC11, 102) /* Cygnus extension to abi: Thumb unconditional branch. */
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RELOC_NUMBER (R_ARM_THM_PC9, 103) /* Cygnus extension to abi: Thumb conditional branch. */
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bfd/
* bfd-in2.h, libbfd.h: Regenerated.
* reloc.c: Add ARM TLS relocations.
* elf32-arm.c (elf32_arm_howto_table): Add dynamic TLS
relocations.
(elf32_arm_tls_gd32_howto, elf32_arm_tls_ldo32_howto)
(elf32_arm_tls_ldm32_howto, elf32_arm_tls_le32_howto)
(elf32_arm_tls_ie32_howto): New.
(elf32_arm_howto_from_type): Support TLS relocations.
(elf32_arm_reloc_map): Likewise.
(elf32_arm_reloc_type_lookup): Likewise.
(TCB_SIZE): Define.
(struct elf32_arm_obj_tdata): New.
(elf32_arm_tdata, elf32_arm_local_got_tls_type): Define.
(elf32_arm_mkobject): New function.
(struct elf32_arm_relocs_copied): Add pc_count.
(elf32_arm_hash_entry, GOT_UNKNOWN, GOT_NORMAL, GOT_TLS_GD)
(GOT_TLS_IE): Define.
(struct elf32_arm_link_hash_table): Add tls_ldm_got.
(elf32_arm_link_hash_newfunc): Initialize tls_type.
(elf32_arm_copy_indirect_symbol): Copy pc_count and tls_type.
(elf32_arm_link_hash_table_create): Initialize tls_ldm_got.
(dtpoff_base, tpoff): New functions.
(elf32_arm_final_link_relocate): Handle TLS relocations.
(IS_ARM_TLS_RELOC): Define.
(elf32_arm_relocate_section): Warn about TLS mismatches.
(elf32_arm_gc_sweep_hook): Handle TLS relocations and pc_count.
(elf32_arm_check_relocs): Detect invalid symbol indexes. Handle
TLS relocations and pc_count.
(elf32_arm_adjust_dynamic_symbol): Check non_got_ref.
(allocate_dynrelocs): Handle TLS. Bind REL32 relocs to local
calls.
(elf32_arm_size_dynamic_sections): Handle TLS.
(elf32_arm_finish_dynamic_symbol): Likewise.
(bfd_elf32_mkobject): Define.
gas/
* config/tc-arm.c (arm_parse_reloc): Add TLS relocations.
(md_apply_fix3): Mark TLS symbols.
(tc_gen_reloc): Handle TLS relocations.
(arm_fix_adjustable): Ignore TLS relocations.
(s_arm_elf_cons): Support expressions after decorated symbols.
gas/testuite/
* gas/arm/tls.s, gas/arm/tls.d: New files.
* gas/arm/arm.exp: Run TLS test.
include/elf/
* arm.h: Add TLS relocations.
ld/testsuite/
* ld-arm/tls-lib.s, ld-arm/tls-lib.d, ld-arm/tls-lib.r,
ld-arm/tls-app.s, ld-arm/tls-app.d, ld-arm/tls-app.r: New files.
* ld-arm/arm-lib.ld, ld-arm/arm-dyn.ld: Increase data segment
alignment.
* ld-arm/arm-elf.exp: Run TLS tests.
2005-03-29 18:54:22 +02:00
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RELOC_NUMBER (R_ARM_TLS_GD32, 104)
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RELOC_NUMBER (R_ARM_TLS_LDM32, 105)
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RELOC_NUMBER (R_ARM_TLS_LDO32, 106)
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RELOC_NUMBER (R_ARM_TLS_IE32, 107)
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RELOC_NUMBER (R_ARM_TLS_LE32, 108)
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FAKE_RELOC (FIRST_INVALID_RELOC3, 109)
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2001-02-28 11:11:36 +01:00
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FAKE_RELOC (LAST_INVALID_RELOC3, 248)
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2000-04-08 02:09:26 +02:00
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RELOC_NUMBER (R_ARM_RXPC25, 249)
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#endif /* not OLD_ARM_ABI */
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RELOC_NUMBER (R_ARM_RSBREL32, 250)
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RELOC_NUMBER (R_ARM_THM_RPC22, 251)
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RELOC_NUMBER (R_ARM_RREL32, 252)
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RELOC_NUMBER (R_ARM_RABS32, 253)
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RELOC_NUMBER (R_ARM_RPC24, 254)
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RELOC_NUMBER (R_ARM_RBASE, 255)
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2000-06-07 05:43:33 +02:00
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END_RELOC_NUMBERS (R_ARM_max)
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1999-05-03 09:29:06 +02:00
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2003-03-25 21:56:01 +01:00
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/* The name of the note section used to identify arm variants. */
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2003-04-01 15:08:06 +02:00
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#define ARM_NOTE_SECTION ".note.gnu.arm.ident"
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2004-10-01 14:59:35 +02:00
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/* Special section names. */
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#define ELF_STRING_ARM_unwind ".ARM.exidx"
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#define ELF_STRING_ARM_unwind_info ".ARM.extab"
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#define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx."
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#define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab."
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2000-04-08 02:09:26 +02:00
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#endif /* _ELF_ARM_H */
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