[thirdparty/binutils-gdb.git] / include / elf / arm.h

/* ARM ELF support for BFD.
   Copyright (C) 1998-2022 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   This program 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 of the License, or
   (at your option) any later version.

   This program 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 this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#ifndef _ELF_ARM_H
#define _ELF_ARM_H

#include "elf/reloc-macros.h"

/* Processor specific flags for the ELF header e_flags field.  */

/* Old ABI (ie GNU pre EABI).  These are deprecated.  */
#define EF_ARM_RELEXEC     0x01
#define EF_ARM_INTERWORK   0x04
#define EF_ARM_APCS_26     0x08
#define EF_ARM_APCS_FLOAT  0x10
#define EF_ARM_PIC         0x20
#define EF_ARM_ALIGN8	   0x40		/* 8-bit structure alignment is in use.  */
#define EF_ARM_NEW_ABI     0x80
#define EF_ARM_OLD_ABI     0x100
#define EF_ARM_SOFT_FLOAT  0x200
#define EF_ARM_VFP_FLOAT   0x400
#define EF_ARM_MAVERICK_FLOAT 0x800

/* Frame unwind information */
#define PT_ARM_EXIDX (PT_LOPROC + 1)

/* Old ARM ELF spec. version B-01.  Mostly deprecated.  */
#define EF_ARM_SYMSARESORTED 0x04	/* NB conflicts with EF_INTERWORK.  */
#define EF_ARM_DYNSYMSUSESEGIDX 0x08	/* NB conflicts with EF_APCS26.  */
#define EF_ARM_MAPSYMSFIRST 0x10	/* NB conflicts with EF_APCS_FLOAT.  */

/* New constants defined in the ARM ELF spec. version XXX (AAELF).
   Only valid in conjunction with EF_ARM_EABI_VER5. */
#define EF_ARM_ABI_FLOAT_SOFT 0x200	/* NB conflicts with EF_ARM_SOFT_FLOAT.  */
#define EF_ARM_ABI_FLOAT_HARD 0x400	/* NB conflicts with EF_ARM_VFP_FLOAT.  */

/* Constants defined in AAELF.  */
#define EF_ARM_BE8	    0x00800000
#define EF_ARM_LE8	    0x00400000

#define EF_ARM_EABIMASK      0xFF000000
#define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
#define EF_ARM_EABI_UNKNOWN  0x00000000
#define EF_ARM_EABI_VER1     0x01000000
#define EF_ARM_EABI_VER2     0x02000000
#define EF_ARM_EABI_VER3     0x03000000
#define EF_ARM_EABI_VER4     0x04000000
#define EF_ARM_EABI_VER5     0x05000000

/* Local aliases for some flags to match names used by COFF port.  */
#define F_INTERWORK	   EF_ARM_INTERWORK
#define F_APCS26	   EF_ARM_APCS_26
#define F_APCS_FLOAT	   EF_ARM_APCS_FLOAT
#define F_PIC              EF_ARM_PIC
#define F_SOFT_FLOAT	   EF_ARM_SOFT_FLOAT
#define F_VFP_FLOAT	   EF_ARM_VFP_FLOAT

/* Additional symbol types for Thumb.  */
#define STT_ARM_TFUNC      STT_LOPROC   /* A Thumb function.  */
#define STT_ARM_16BIT      STT_HIPROC   /* A Thumb label.  */

/* Additional section types.  */
#define SHT_ARM_EXIDX	       0x70000001	/* Section holds ARM unwind info.  */
#define SHT_ARM_PREEMPTMAP     0x70000002	/* Section pre-emption details.  */
#define SHT_ARM_ATTRIBUTES     0x70000003	/* Section holds attributes.  */
#define SHT_ARM_DEBUGOVERLAY   0x70000004	/* Section holds overlay debug info.  */
#define SHT_ARM_OVERLAYSECTION 0x70000005	/* Section holds GDB and overlay integration info.  */

/* ARM-specific values for sh_flags.  */
#define SHF_ENTRYSECT      0x10000000   /* Section contains an entry point.  */
#define SHF_ARM_PURECODE   0x20000000   /* Section contains only code and no data.  */
#define SHF_COMDEF         0x80000000   /* Section may be multiply defined in the input to a link step.  */

/* ARM-specific program header flags.  */
#define PF_ARM_SB          0x10000000   /* Segment contains the location addressed by the static base.  */
#define PF_ARM_PI          0x20000000   /* Segment is position-independent.  */
#define PF_ARM_ABS         0x40000000   /* Segment must be loaded at its base address.  */

/* Values for the Tag_CPU_arch EABI attribute.  */
#define TAG_CPU_ARCH_PRE_V4	0
#define TAG_CPU_ARCH_V4		1
#define TAG_CPU_ARCH_V4T	2
#define TAG_CPU_ARCH_V5T	3
#define TAG_CPU_ARCH_V5TE	4
#define TAG_CPU_ARCH_V5TEJ	5
#define TAG_CPU_ARCH_V6		6
#define TAG_CPU_ARCH_V6KZ	7
#define TAG_CPU_ARCH_V6T2	8
#define TAG_CPU_ARCH_V6K	9
#define TAG_CPU_ARCH_V7		10
#define TAG_CPU_ARCH_V6_M	11
#define TAG_CPU_ARCH_V6S_M	12
#define TAG_CPU_ARCH_V7E_M	13
#define TAG_CPU_ARCH_V8		14
#define TAG_CPU_ARCH_V8R	15
#define TAG_CPU_ARCH_V8M_BASE	16
#define TAG_CPU_ARCH_V8M_MAIN	17
#define TAG_CPU_ARCH_8_1A       18
#define TAG_CPU_ARCH_8_2A       19
#define TAG_CPU_ARCH_8_3A       20
#define TAG_CPU_ARCH_V8_1M_MAIN 21
#define TAG_CPU_ARCH_V9         22
#define MAX_TAG_CPU_ARCH	TAG_CPU_ARCH_V9
/* Pseudo-architecture to allow objects to be compatible with the subset of
   armv4t and armv6-m.  This value should never be stored in object files.  */
#define TAG_CPU_ARCH_V4T_PLUS_V6_M (MAX_TAG_CPU_ARCH + 1)

/* Relocation types.  */

START_RELOC_NUMBERS (elf_arm_reloc_type)
/* AAELF official names and numbers.  */
  RELOC_NUMBER (R_ARM_NONE,            	  0)
  RELOC_NUMBER (R_ARM_PC24,            	  1)   /* deprecated */
  RELOC_NUMBER (R_ARM_ABS32,           	  2)
  RELOC_NUMBER (R_ARM_REL32,           	  3)
  RELOC_NUMBER (R_ARM_LDR_PC_G0,       	  4)
  RELOC_NUMBER (R_ARM_ABS16,           	  5)
  RELOC_NUMBER (R_ARM_ABS12,           	  6)
  RELOC_NUMBER (R_ARM_THM_ABS5,        	  7)
  RELOC_NUMBER (R_ARM_ABS8,            	  8)
  RELOC_NUMBER (R_ARM_SBREL32,         	  9)
  RELOC_NUMBER (R_ARM_THM_CALL,        	 10)
  RELOC_NUMBER (R_ARM_THM_PC8,         	 11)
  RELOC_NUMBER (R_ARM_BREL_ADJ,	       	 12)
  RELOC_NUMBER (R_ARM_TLS_DESC,          13)
  RELOC_NUMBER (R_ARM_THM_SWI8,        	 14)   /* obsolete */
  RELOC_NUMBER (R_ARM_XPC25,           	 15)   /* obsolete */
  RELOC_NUMBER (R_ARM_THM_XPC22,       	 16)   /* obsolete */
  RELOC_NUMBER (R_ARM_TLS_DTPMOD32,    	 17)
  RELOC_NUMBER (R_ARM_TLS_DTPOFF32,    	 18)
  RELOC_NUMBER (R_ARM_TLS_TPOFF32,     	 19)
  RELOC_NUMBER (R_ARM_COPY,            	 20)   /* Copy symbol at runtime.  */
  RELOC_NUMBER (R_ARM_GLOB_DAT,        	 21)   /* Create GOT entry.  */
  RELOC_NUMBER (R_ARM_JUMP_SLOT,       	 22)   /* Create PLT entry.  */
  RELOC_NUMBER (R_ARM_RELATIVE,        	 23)   /* Adjust by program base.  */
  RELOC_NUMBER (R_ARM_GOTOFF32,        	 24)   /* 32 bit offset to GOT.  */
  RELOC_NUMBER (R_ARM_BASE_PREL,       	 25)   /* 32 bit PC relative offset to GOT.  */
  RELOC_NUMBER (R_ARM_GOT_BREL,        	 26)   /* 32 bit GOT entry.  */
  RELOC_NUMBER (R_ARM_PLT32,           	 27)   /* deprecated - 32 bit PLT address.  */
  RELOC_NUMBER (R_ARM_CALL,            	 28)
  RELOC_NUMBER (R_ARM_JUMP24,          	 29)
  RELOC_NUMBER (R_ARM_THM_JUMP24,      	 30)
  RELOC_NUMBER (R_ARM_BASE_ABS,        	 31)
  RELOC_NUMBER (R_ARM_ALU_PCREL7_0,    	 32)   /* obsolete */
  RELOC_NUMBER (R_ARM_ALU_PCREL15_8,   	 33)   /* obsolete */
  RELOC_NUMBER (R_ARM_ALU_PCREL23_15,  	 34)   /* obsolete */
  RELOC_NUMBER (R_ARM_LDR_SBREL_11_0,  	 35)   /* deprecated, should have _NC suffix */
  RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 	 36)   /* deprecated, should have _NC suffix */
  RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 	 37)   /* deprecated, should have _CK suffix */
  RELOC_NUMBER (R_ARM_TARGET1,         	 38)
  RELOC_NUMBER (R_ARM_SBREL31,         	 39)   /* deprecated */
  RELOC_NUMBER (R_ARM_V4BX,            	 40)
  RELOC_NUMBER (R_ARM_TARGET2,	       	 41)
  RELOC_NUMBER (R_ARM_PREL31,	       	 42)
  RELOC_NUMBER (R_ARM_MOVW_ABS_NC,     	 43)
  RELOC_NUMBER (R_ARM_MOVT_ABS,        	 44)
  RELOC_NUMBER (R_ARM_MOVW_PREL_NC,    	 45)
  RELOC_NUMBER (R_ARM_MOVT_PREL,       	 46)
  RELOC_NUMBER (R_ARM_THM_MOVW_ABS_NC, 	 47)
  RELOC_NUMBER (R_ARM_THM_MOVT_ABS,    	 48)
  RELOC_NUMBER (R_ARM_THM_MOVW_PREL_NC,	 49)
  RELOC_NUMBER (R_ARM_THM_MOVT_PREL,   	 50)
  RELOC_NUMBER (R_ARM_THM_JUMP19,      	 51)
  RELOC_NUMBER (R_ARM_THM_JUMP6,       	 52)
  RELOC_NUMBER (R_ARM_THM_ALU_PREL_11_0, 53)
  RELOC_NUMBER (R_ARM_THM_PC12,        	 54)
  RELOC_NUMBER (R_ARM_ABS32_NOI,       	 55)
  RELOC_NUMBER (R_ARM_REL32_NOI,       	 56)
  RELOC_NUMBER (R_ARM_ALU_PC_G0_NC,      57)
  RELOC_NUMBER (R_ARM_ALU_PC_G0,         58)
  RELOC_NUMBER (R_ARM_ALU_PC_G1_NC,      59)
  RELOC_NUMBER (R_ARM_ALU_PC_G1,         60)
  RELOC_NUMBER (R_ARM_ALU_PC_G2,         61)
  RELOC_NUMBER (R_ARM_LDR_PC_G1,         62)
  RELOC_NUMBER (R_ARM_LDR_PC_G2,         63)
  RELOC_NUMBER (R_ARM_LDRS_PC_G0,        64)
  RELOC_NUMBER (R_ARM_LDRS_PC_G1,        65)
  RELOC_NUMBER (R_ARM_LDRS_PC_G2,        66)
  RELOC_NUMBER (R_ARM_LDC_PC_G0,         67)
  RELOC_NUMBER (R_ARM_LDC_PC_G1,         68)
  RELOC_NUMBER (R_ARM_LDC_PC_G2,         69)
  RELOC_NUMBER (R_ARM_ALU_SB_G0_NC,      70)
  RELOC_NUMBER (R_ARM_ALU_SB_G0,         71)
  RELOC_NUMBER (R_ARM_ALU_SB_G1_NC,      72)
  RELOC_NUMBER (R_ARM_ALU_SB_G1,         73)
  RELOC_NUMBER (R_ARM_ALU_SB_G2,         74)
  RELOC_NUMBER (R_ARM_LDR_SB_G0,         75)
  RELOC_NUMBER (R_ARM_LDR_SB_G1,         76)
  RELOC_NUMBER (R_ARM_LDR_SB_G2,         77)
  RELOC_NUMBER (R_ARM_LDRS_SB_G0,        78)
  RELOC_NUMBER (R_ARM_LDRS_SB_G1,        79)
  RELOC_NUMBER (R_ARM_LDRS_SB_G2,        80)
  RELOC_NUMBER (R_ARM_LDC_SB_G0,         81)
  RELOC_NUMBER (R_ARM_LDC_SB_G1,         82)
  RELOC_NUMBER (R_ARM_LDC_SB_G2,         83)
  RELOC_NUMBER (R_ARM_MOVW_BREL_NC,    	 84)
  RELOC_NUMBER (R_ARM_MOVT_BREL,       	 85)
  RELOC_NUMBER (R_ARM_MOVW_BREL,       	 86)
  RELOC_NUMBER (R_ARM_THM_MOVW_BREL_NC,	 87)
  RELOC_NUMBER (R_ARM_THM_MOVT_BREL,   	 88)
  RELOC_NUMBER (R_ARM_THM_MOVW_BREL,   	 89)
  RELOC_NUMBER (R_ARM_TLS_GOTDESC,       90)
  RELOC_NUMBER (R_ARM_TLS_CALL,          91)
  RELOC_NUMBER (R_ARM_TLS_DESCSEQ,       92)
  RELOC_NUMBER (R_ARM_THM_TLS_CALL,      93)
  RELOC_NUMBER (R_ARM_PLT32_ABS,       	 94)
  RELOC_NUMBER (R_ARM_GOT_ABS,	       	 95)
  RELOC_NUMBER (R_ARM_GOT_PREL,	       	 96)
  RELOC_NUMBER (R_ARM_GOT_BREL12,      	 97)
  RELOC_NUMBER (R_ARM_GOTOFF12,	       	 98)
  RELOC_NUMBER (R_ARM_GOTRELAX,	       	 99)
  RELOC_NUMBER (R_ARM_GNU_VTENTRY,    	100)   /* deprecated - old C++ abi */
  RELOC_NUMBER (R_ARM_GNU_VTINHERIT,  	101)   /* deprecated - old C++ abi */
  RELOC_NUMBER (R_ARM_THM_JUMP11,     	102)
  RELOC_NUMBER (R_ARM_THM_JUMP8,      	103)
  RELOC_NUMBER (R_ARM_TLS_GD32,	      	104)
  RELOC_NUMBER (R_ARM_TLS_LDM32,      	105)
  RELOC_NUMBER (R_ARM_TLS_LDO32,      	106)
  RELOC_NUMBER (R_ARM_TLS_IE32,       	107)
  RELOC_NUMBER (R_ARM_TLS_LE32,	      	108)
  RELOC_NUMBER (R_ARM_TLS_LDO12,      	109)
  RELOC_NUMBER (R_ARM_TLS_LE12,	      	110)
  RELOC_NUMBER (R_ARM_TLS_IE12GP,     	111)
  /* 112 - 127 private range */
  RELOC_NUMBER (R_ARM_ME_TOO,	        128)   /* obsolete */
  RELOC_NUMBER (R_ARM_THM_TLS_DESCSEQ  ,129)

  RELOC_NUMBER (R_ARM_THM_ALU_ABS_G0_NC,132)
  RELOC_NUMBER (R_ARM_THM_ALU_ABS_G1_NC,133)
  RELOC_NUMBER (R_ARM_THM_ALU_ABS_G2_NC,134)
  RELOC_NUMBER (R_ARM_THM_ALU_ABS_G3_NC,135)
  RELOC_NUMBER (R_ARM_THM_BF16,		136)
  RELOC_NUMBER (R_ARM_THM_BF12,		137)
  RELOC_NUMBER (R_ARM_THM_BF18,		138)

  RELOC_NUMBER (R_ARM_IRELATIVE,      	160)
  RELOC_NUMBER (R_ARM_GOTFUNCDESC,    	161)
  RELOC_NUMBER (R_ARM_GOTOFFFUNCDESC, 	162)
  RELOC_NUMBER (R_ARM_FUNCDESC,       	163)
  RELOC_NUMBER (R_ARM_FUNCDESC_VALUE, 	164)
  RELOC_NUMBER (R_ARM_TLS_GD32_FDPIC,   165)
  RELOC_NUMBER (R_ARM_TLS_LDM32_FDPIC,  166)
  RELOC_NUMBER (R_ARM_TLS_IE32_FDPIC,   167)

  /* Extensions?  R=read-only?  */
  RELOC_NUMBER (R_ARM_RXPC25,         	249)
  RELOC_NUMBER (R_ARM_RSBREL32,       	250)
  RELOC_NUMBER (R_ARM_THM_RPC22,      	251)
  RELOC_NUMBER (R_ARM_RREL32,         	252)
  RELOC_NUMBER (R_ARM_RABS32,         	253)
  RELOC_NUMBER (R_ARM_RPC24,          	254)
  RELOC_NUMBER (R_ARM_RBASE,          	255)

  /* Unofficial names for some of the relocs.  */
  FAKE_RELOC (R_ARM_GOTOFF,             R_ARM_GOTOFF32)   /* 32 bit offset to GOT.  */
  FAKE_RELOC (R_ARM_THM_PC22,           R_ARM_THM_CALL)
  FAKE_RELOC (R_ARM_THM_PC11,           R_ARM_THM_JUMP11)
  FAKE_RELOC (R_ARM_THM_PC9,            R_ARM_THM_JUMP8)

  /* Relocs with both a different name, and (apparently) different meaning in
     GNU usage.  */
  FAKE_RELOC (R_ARM_GOTPC,              R_ARM_BASE_PREL)  /* 32 bit PC relative offset to GOT.  */
  FAKE_RELOC (R_ARM_GOT32,              R_ARM_GOT_BREL)   /* 32 bit GOT entry.  */
  FAKE_RELOC (R_ARM_ROSEGREL32,         R_ARM_SBREL31)    /* ??? */
  FAKE_RELOC (R_ARM_AMP_VCALL9,         R_ARM_BREL_ADJ)   /* Thumb-something.  Not used.  */

END_RELOC_NUMBERS (R_ARM_max = 256)

#ifdef BFD_ARCH_SIZE
/* EABI object attributes.  */

enum
{
  /* 0-3 are generic.  */
  Tag_CPU_raw_name = 4,
  Tag_CPU_name,
  Tag_CPU_arch,
  Tag_CPU_arch_profile,
  Tag_ARM_ISA_use,
  Tag_THUMB_ISA_use,
  Tag_FP_arch,
  Tag_WMMX_arch,
  Tag_Advanced_SIMD_arch,
  Tag_PCS_config,
  Tag_ABI_PCS_R9_use,
  Tag_ABI_PCS_RW_data,
  Tag_ABI_PCS_RO_data,
  Tag_ABI_PCS_GOT_use,
  Tag_ABI_PCS_wchar_t,
  Tag_ABI_FP_rounding,
  Tag_ABI_FP_denormal,
  Tag_ABI_FP_exceptions,
  Tag_ABI_FP_user_exceptions,
  Tag_ABI_FP_number_model,
  Tag_ABI_align_needed,
  Tag_ABI_align_preserved,
  Tag_ABI_enum_size,
  Tag_ABI_HardFP_use,
  Tag_ABI_VFP_args,
  Tag_ABI_WMMX_args,
  Tag_ABI_optimization_goals,
  Tag_ABI_FP_optimization_goals,
  /* 32 is generic (Tag_compatibility).  */
  Tag_undefined33 = 33,
  Tag_CPU_unaligned_access,
  Tag_undefined35,
  Tag_FP_HP_extension,
  Tag_undefined37,
  Tag_ABI_FP_16bit_format,
  Tag_undefined39,
  Tag_undefined40,
  Tag_undefined41,
  Tag_MPextension_use,
  Tag_undefined_43,
  Tag_DIV_use,
  Tag_DSP_extension = 46,
  Tag_MVE_arch = 48,
  Tag_PAC_extension = 50,
  Tag_BTI_extension = 52,
  Tag_BTI_use = 74,
  Tag_PACRET_use = 76,
  Tag_nodefaults = 64,
  Tag_also_compatible_with,
  Tag_T2EE_use,
  Tag_conformance,
  Tag_Virtualization_use,
  Tag_undefined69,
  Tag_MPextension_use_legacy,

  /* The following tags are legacy names for other tags.  */
  Tag_VFP_arch = Tag_FP_arch,
  Tag_ABI_align8_needed = Tag_ABI_align_needed,
  Tag_ABI_align8_preserved = Tag_ABI_align_preserved,
  Tag_VFP_HP_extension = Tag_FP_HP_extension
};

/* Values for Tag_ABI_FP_number_model.  */
enum
{
  AEABI_FP_number_model_none = 0,
  AEABI_FP_number_model_ieee754_number = 1,
  AEABI_FP_number_model_rtabi = 2,
  AEABI_FP_number_model_ieee754_all = 3
};

/* Values for Tag_ABI_VFP_args.  */
enum
{
  AEABI_VFP_args_base = 0,
  AEABI_VFP_args_vfp = 1,
  AEABI_VFP_args_toolchain = 2,
  AEABI_VFP_args_compatible = 3
};
#endif

/* The name of the note section used to identify arm variants.  */
#define ARM_NOTE_SECTION ".note.gnu.arm.ident"

/* Special section names.  */
#define ELF_STRING_ARM_unwind           ".ARM.exidx"
#define ELF_STRING_ARM_unwind_info      ".ARM.extab"
#define ELF_STRING_ARM_unwind_once      ".gnu.linkonce.armexidx."
#define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab."

enum arm_st_branch_type {
  ST_BRANCH_TO_ARM,
  ST_BRANCH_TO_THUMB,
  ST_BRANCH_LONG,
  ST_BRANCH_UNKNOWN,
  ST_BRANCH_ENUM_SIZE
};

#define NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS 2
#define ENUM_ARM_ST_BRANCH_TYPE_BITMASK	\
  ((1 << NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS) - 1)

#define ARM_GET_SYM_BRANCH_TYPE(STI) \
  ((enum arm_st_branch_type) ((STI) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK))
#ifdef BFD_ASSERT
#define ARM_SET_SYM_BRANCH_TYPE(STI, TYPE)			\
  do {								\
    BFD_ASSERT (TYPE <= ST_BRANCH_ENUM_SIZE);			\
    BFD_ASSERT ((1 << NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS)		\
		>= ST_BRANCH_ENUM_SIZE);			\
    (STI) = (((STI) & ~ENUM_ARM_ST_BRANCH_TYPE_BITMASK)		\
	     | ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK));	\
  } while (0)
#else
#define ARM_SET_SYM_BRANCH_TYPE(STI, TYPE)			\
  (STI) = (((STI) & ~ENUM_ARM_ST_BRANCH_TYPE_BITMASK)		\
	   | ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK))
#endif

#endif /* _ELF_ARM_H */
Commit	Line	Data
252b5132	1	/* ARM ELF support for BFD.
a2c58332	2	Copyright (C) 1998-2022 Free Software Foundation, Inc.
252b5132 RH	3
	4	This file is part of BFD, the Binary File Descriptor library.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
e4e42b45	8	the Free Software Foundation; either version 3 of the License, or
252b5132 RH	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software Foundation,
e172dbf8	18	Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132 RH	19
	20	#ifndef _ELF_ARM_H
	21	#define _ELF_ARM_H
	22
	23	#include "elf/reloc-macros.h"
	24
	25	/* Processor specific flags for the ELF header e_flags field. */
57285ade RE	26
57285ade RE	27	/* Old ABI (ie GNU pre EABI). These are deprecated. */
252b5132	28	#define EF_ARM_RELEXEC 0x01
2a7a4624 PB	29	#define EF_ARM_INTERWORK 0x04
	30	#define EF_ARM_APCS_26 0x08
	31	#define EF_ARM_APCS_FLOAT 0x10
	32	#define EF_ARM_PIC 0x20
	33	#define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */
	34	#define EF_ARM_NEW_ABI 0x80
	35	#define EF_ARM_OLD_ABI 0x100
	36	#define EF_ARM_SOFT_FLOAT 0x200
ca4ebd1e	37	#define EF_ARM_VFP_FLOAT 0x400
fde78edd	38	#define EF_ARM_MAVERICK_FLOAT 0x800
2a7a4624	39
b294bdf8	40	/* Frame unwind information */
c19d1205	41	#define PT_ARM_EXIDX (PT_LOPROC + 1)
b294bdf8	42
57285ade	43	/* Old ARM ELF spec. version B-01. Mostly deprecated. */
7f6fed87 NC	44	#define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK. */
	45	#define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26. */
	46	#define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT. */
ff1c4e0d	47
57285ade	48	/* New constants defined in the ARM ELF spec. version XXX (AAELF).
3bfcb652 NC	49	Only valid in conjunction with EF_ARM_EABI_VER5. */
	50	#define EF_ARM_ABI_FLOAT_SOFT 0x200 /* NB conflicts with EF_ARM_SOFT_FLOAT. */
	51	#define EF_ARM_ABI_FLOAT_HARD 0x400 /* NB conflicts with EF_ARM_VFP_FLOAT. */
	52
d507cf36 PB	53	/* Constants defined in AAELF. */
	54	#define EF_ARM_BE8 0x00800000
	55	#define EF_ARM_LE8 0x00400000
	56
57285ade	57	#define EF_ARM_EABIMASK 0xFF000000
ff1c4e0d NC	58	#define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
	59	#define EF_ARM_EABI_UNKNOWN 0x00000000
	60	#define EF_ARM_EABI_VER1 0x01000000
2a7a4624	61	#define EF_ARM_EABI_VER2 0x02000000
d507cf36	62	#define EF_ARM_EABI_VER3 0x03000000
8cb51566	63	#define EF_ARM_EABI_VER4 0x04000000
3a4a14e9	64	#define EF_ARM_EABI_VER5 0x05000000
ff1c4e0d	65
252b5132	66	/* Local aliases for some flags to match names used by COFF port. */
2a7a4624 PB	67	#define F_INTERWORK EF_ARM_INTERWORK
	68	#define F_APCS26 EF_ARM_APCS_26
	69	#define F_APCS_FLOAT EF_ARM_APCS_FLOAT
	70	#define F_PIC EF_ARM_PIC
	71	#define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT
ca4ebd1e	72	#define F_VFP_FLOAT EF_ARM_VFP_FLOAT
252b5132	73
2f0ca46a NC	74	/* Additional symbol types for Thumb. */
	75	#define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */
	76	#define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */
252b5132	77
40a18ebd	78	/* Additional section types. */
7f6fed87 NC	79	#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */
	80	#define SHT_ARM_PREEMPTMAP 0x70000002 /* Section pre-emption details. */
	81	#define SHT_ARM_ATTRIBUTES 0x70000003 /* Section holds attributes. */
	82	#define SHT_ARM_DEBUGOVERLAY 0x70000004 /* Section holds overlay debug info. */
	83	#define SHT_ARM_OVERLAYSECTION 0x70000005 /* Section holds GDB and overlay integration info. */
40a18ebd	84
2f0ca46a NC	85	/* ARM-specific values for sh_flags. */
2f0ca46a NC	86	#define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */
f0728ee3	87	#define SHF_ARM_PURECODE 0x20000000 /* Section contains only code and no data. */
2f0ca46a	88	#define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */
252b5132	89
2f0ca46a NC	90	/* ARM-specific program header flags. */
2f0ca46a NC	91	#define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */
ff1c4e0d NC	92	#define PF_ARM_PI 0x20000000 /* Segment is position-independent. */
ff1c4e0d NC	93	#define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */
252b5132	94
e95de063	95	/* Values for the Tag_CPU_arch EABI attribute. */
91e22acd AS	96	#define TAG_CPU_ARCH_PRE_V4 0
	97	#define TAG_CPU_ARCH_V4 1
	98	#define TAG_CPU_ARCH_V4T 2
	99	#define TAG_CPU_ARCH_V5T 3
	100	#define TAG_CPU_ARCH_V5TE 4
	101	#define TAG_CPU_ARCH_V5TEJ 5
	102	#define TAG_CPU_ARCH_V6 6
	103	#define TAG_CPU_ARCH_V6KZ 7
	104	#define TAG_CPU_ARCH_V6T2 8
	105	#define TAG_CPU_ARCH_V6K 9
	106	#define TAG_CPU_ARCH_V7 10
	107	#define TAG_CPU_ARCH_V6_M 11
	108	#define TAG_CPU_ARCH_V6S_M 12
9e3c6df6	109	#define TAG_CPU_ARCH_V7E_M 13
bca38921	110	#define TAG_CPU_ARCH_V8 14
ced40572	111	#define TAG_CPU_ARCH_V8R 15
ff8646ee	112	#define TAG_CPU_ARCH_V8M_BASE 16
4ed7ed8d	113	#define TAG_CPU_ARCH_V8M_MAIN 17
3197e593 PW	114	#define TAG_CPU_ARCH_8_1A 18
	115	#define TAG_CPU_ARCH_8_2A 19
	116	#define TAG_CPU_ARCH_8_3A 20
031254f2	117	#define TAG_CPU_ARCH_V8_1M_MAIN 21
3197e593 PW	118	#define TAG_CPU_ARCH_V9 22
3197e593 PW	119	#define MAX_TAG_CPU_ARCH TAG_CPU_ARCH_V9
91e22acd AS	120	/* Pseudo-architecture to allow objects to be compatible with the subset of
	121	armv4t and armv6-m. This value should never be stored in object files. */
	122	#define TAG_CPU_ARCH_V4T_PLUS_V6_M (MAX_TAG_CPU_ARCH + 1)
e95de063	123
252b5132	124	/* Relocation types. */
8725b940	125
252b5132	126	START_RELOC_NUMBERS (elf_arm_reloc_type)
c19d1205 ZW	127	/* AAELF official names and numbers. */
	128	RELOC_NUMBER (R_ARM_NONE, 0)
	129	RELOC_NUMBER (R_ARM_PC24, 1) /* deprecated */
	130	RELOC_NUMBER (R_ARM_ABS32, 2)
	131	RELOC_NUMBER (R_ARM_REL32, 3)
c19d1205 ZW	132	RELOC_NUMBER (R_ARM_LDR_PC_G0, 4)
	133	RELOC_NUMBER (R_ARM_ABS16, 5)
	134	RELOC_NUMBER (R_ARM_ABS12, 6)
	135	RELOC_NUMBER (R_ARM_THM_ABS5, 7)
	136	RELOC_NUMBER (R_ARM_ABS8, 8)
	137	RELOC_NUMBER (R_ARM_SBREL32, 9)
	138	RELOC_NUMBER (R_ARM_THM_CALL, 10)
	139	RELOC_NUMBER (R_ARM_THM_PC8, 11)
	140	RELOC_NUMBER (R_ARM_BREL_ADJ, 12)
0855e32b	141	RELOC_NUMBER (R_ARM_TLS_DESC, 13)
c19d1205	142	RELOC_NUMBER (R_ARM_THM_SWI8, 14) /* obsolete */
c19d1205 ZW	143	RELOC_NUMBER (R_ARM_XPC25, 15) /* obsolete */
	144	RELOC_NUMBER (R_ARM_THM_XPC22, 16) /* obsolete */
	145	RELOC_NUMBER (R_ARM_TLS_DTPMOD32, 17)
	146	RELOC_NUMBER (R_ARM_TLS_DTPOFF32, 18)
	147	RELOC_NUMBER (R_ARM_TLS_TPOFF32, 19)
	148	RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */
	149	RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */
	150	RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */
	151	RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */
	152	RELOC_NUMBER (R_ARM_GOTOFF32, 24) /* 32 bit offset to GOT. */
	153	RELOC_NUMBER (R_ARM_BASE_PREL, 25) /* 32 bit PC relative offset to GOT. */
	154	RELOC_NUMBER (R_ARM_GOT_BREL, 26) /* 32 bit GOT entry. */
	155	RELOC_NUMBER (R_ARM_PLT32, 27) /* deprecated - 32 bit PLT address. */
	156	RELOC_NUMBER (R_ARM_CALL, 28)
	157	RELOC_NUMBER (R_ARM_JUMP24, 29)
	158	RELOC_NUMBER (R_ARM_THM_JUMP24, 30)
	159	RELOC_NUMBER (R_ARM_BASE_ABS, 31)
	160	RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) /* obsolete */
	161	RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) /* obsolete */
	162	RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) /* obsolete */
	163	RELOC_NUMBER (R_ARM_LDR_SBREL_11_0, 35) /* deprecated, should have _NC suffix */
	164	RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 36) /* deprecated, should have _NC suffix */
	165	RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 37) /* deprecated, should have _CK suffix */
	166	RELOC_NUMBER (R_ARM_TARGET1, 38)
	167	RELOC_NUMBER (R_ARM_SBREL31, 39) /* deprecated */
	168	RELOC_NUMBER (R_ARM_V4BX, 40)
	169	RELOC_NUMBER (R_ARM_TARGET2, 41)
	170	RELOC_NUMBER (R_ARM_PREL31, 42)
	171	RELOC_NUMBER (R_ARM_MOVW_ABS_NC, 43)
	172	RELOC_NUMBER (R_ARM_MOVT_ABS, 44)
	173	RELOC_NUMBER (R_ARM_MOVW_PREL_NC, 45)
	174	RELOC_NUMBER (R_ARM_MOVT_PREL, 46)
	175	RELOC_NUMBER (R_ARM_THM_MOVW_ABS_NC, 47)
	176	RELOC_NUMBER (R_ARM_THM_MOVT_ABS, 48)
	177	RELOC_NUMBER (R_ARM_THM_MOVW_PREL_NC, 49)
	178	RELOC_NUMBER (R_ARM_THM_MOVT_PREL, 50)
	179	RELOC_NUMBER (R_ARM_THM_JUMP19, 51)
	180	RELOC_NUMBER (R_ARM_THM_JUMP6, 52)
	181	RELOC_NUMBER (R_ARM_THM_ALU_PREL_11_0, 53)
	182	RELOC_NUMBER (R_ARM_THM_PC12, 54)
	183	RELOC_NUMBER (R_ARM_ABS32_NOI, 55)
	184	RELOC_NUMBER (R_ARM_REL32_NOI, 56)
	185	RELOC_NUMBER (R_ARM_ALU_PC_G0_NC, 57)
	186	RELOC_NUMBER (R_ARM_ALU_PC_G0, 58)
	187	RELOC_NUMBER (R_ARM_ALU_PC_G1_NC, 59)
	188	RELOC_NUMBER (R_ARM_ALU_PC_G1, 60)
	189	RELOC_NUMBER (R_ARM_ALU_PC_G2, 61)
	190	RELOC_NUMBER (R_ARM_LDR_PC_G1, 62)
	191	RELOC_NUMBER (R_ARM_LDR_PC_G2, 63)
	192	RELOC_NUMBER (R_ARM_LDRS_PC_G0, 64)
	193	RELOC_NUMBER (R_ARM_LDRS_PC_G1, 65)
	194	RELOC_NUMBER (R_ARM_LDRS_PC_G2, 66)
	195	RELOC_NUMBER (R_ARM_LDC_PC_G0, 67)
	196	RELOC_NUMBER (R_ARM_LDC_PC_G1, 68)
	197	RELOC_NUMBER (R_ARM_LDC_PC_G2, 69)
	198	RELOC_NUMBER (R_ARM_ALU_SB_G0_NC, 70)
	199	RELOC_NUMBER (R_ARM_ALU_SB_G0, 71)
	200	RELOC_NUMBER (R_ARM_ALU_SB_G1_NC, 72)
	201	RELOC_NUMBER (R_ARM_ALU_SB_G1, 73)
	202	RELOC_NUMBER (R_ARM_ALU_SB_G2, 74)
	203	RELOC_NUMBER (R_ARM_LDR_SB_G0, 75)
	204	RELOC_NUMBER (R_ARM_LDR_SB_G1, 76)
	205	RELOC_NUMBER (R_ARM_LDR_SB_G2, 77)
	206	RELOC_NUMBER (R_ARM_LDRS_SB_G0, 78)
207	RELOC_NUMBER (R_ARM_LDRS_SB_G1, 79)
208	RELOC_NUMBER (R_ARM_LDRS_SB_G2, 80)
4962c51a MS	209	RELOC_NUMBER (R_ARM_LDC_SB_G0, 81)
	210	RELOC_NUMBER (R_ARM_LDC_SB_G1, 82)
	211	RELOC_NUMBER (R_ARM_LDC_SB_G2, 83)
c19d1205 ZW	212	RELOC_NUMBER (R_ARM_MOVW_BREL_NC, 84)
	213	RELOC_NUMBER (R_ARM_MOVT_BREL, 85)
	214	RELOC_NUMBER (R_ARM_MOVW_BREL, 86)
	215	RELOC_NUMBER (R_ARM_THM_MOVW_BREL_NC, 87)
	216	RELOC_NUMBER (R_ARM_THM_MOVT_BREL, 88)
	217	RELOC_NUMBER (R_ARM_THM_MOVW_BREL, 89)
0855e32b NS	218	RELOC_NUMBER (R_ARM_TLS_GOTDESC, 90)
	219	RELOC_NUMBER (R_ARM_TLS_CALL, 91)
	220	RELOC_NUMBER (R_ARM_TLS_DESCSEQ, 92)
	221	RELOC_NUMBER (R_ARM_THM_TLS_CALL, 93)
c19d1205 ZW	222	RELOC_NUMBER (R_ARM_PLT32_ABS, 94)
	223	RELOC_NUMBER (R_ARM_GOT_ABS, 95)
	224	RELOC_NUMBER (R_ARM_GOT_PREL, 96)
	225	RELOC_NUMBER (R_ARM_GOT_BREL12, 97)
	226	RELOC_NUMBER (R_ARM_GOTOFF12, 98)
	227	RELOC_NUMBER (R_ARM_GOTRELAX, 99)
c19d1205 ZW	228	RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) /* deprecated - old C++ abi */
	229	RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) /* deprecated - old C++ abi */
	230	RELOC_NUMBER (R_ARM_THM_JUMP11, 102)
	231	RELOC_NUMBER (R_ARM_THM_JUMP8, 103)
c19d1205 ZW	232	RELOC_NUMBER (R_ARM_TLS_GD32, 104)
	233	RELOC_NUMBER (R_ARM_TLS_LDM32, 105)
	234	RELOC_NUMBER (R_ARM_TLS_LDO32, 106)
	235	RELOC_NUMBER (R_ARM_TLS_IE32, 107)
	236	RELOC_NUMBER (R_ARM_TLS_LE32, 108)
	237	RELOC_NUMBER (R_ARM_TLS_LDO12, 109)
	238	RELOC_NUMBER (R_ARM_TLS_LE12, 110)
	239	RELOC_NUMBER (R_ARM_TLS_IE12GP, 111)
	240	/* 112 - 127 private range */
	241	RELOC_NUMBER (R_ARM_ME_TOO, 128) /* obsolete */
0855e32b	242	RELOC_NUMBER (R_ARM_THM_TLS_DESCSEQ ,129)
c19d1205	243
72d98d16 MG	244	RELOC_NUMBER (R_ARM_THM_ALU_ABS_G0_NC,132)
	245	RELOC_NUMBER (R_ARM_THM_ALU_ABS_G1_NC,133)
	246	RELOC_NUMBER (R_ARM_THM_ALU_ABS_G2_NC,134)
	247	RELOC_NUMBER (R_ARM_THM_ALU_ABS_G3_NC,135)
e5d6e09e	248	RELOC_NUMBER (R_ARM_THM_BF16, 136)
1889da70	249	RELOC_NUMBER (R_ARM_THM_BF12, 137)
1caf72a5	250	RELOC_NUMBER (R_ARM_THM_BF18, 138)
72d98d16	251
34e77a92	252	RELOC_NUMBER (R_ARM_IRELATIVE, 160)
188fd7ae CL	253	RELOC_NUMBER (R_ARM_GOTFUNCDESC, 161)
	254	RELOC_NUMBER (R_ARM_GOTOFFFUNCDESC, 162)
	255	RELOC_NUMBER (R_ARM_FUNCDESC, 163)
	256	RELOC_NUMBER (R_ARM_FUNCDESC_VALUE, 164)
5c5a4843 CL	257	RELOC_NUMBER (R_ARM_TLS_GD32_FDPIC, 165)
	258	RELOC_NUMBER (R_ARM_TLS_LDM32_FDPIC, 166)
	259	RELOC_NUMBER (R_ARM_TLS_IE32_FDPIC, 167)
34e77a92	260
c19d1205 ZW	261	/* Extensions? R=read-only? */
	262	RELOC_NUMBER (R_ARM_RXPC25, 249)
	263	RELOC_NUMBER (R_ARM_RSBREL32, 250)
	264	RELOC_NUMBER (R_ARM_THM_RPC22, 251)
	265	RELOC_NUMBER (R_ARM_RREL32, 252)
	266	RELOC_NUMBER (R_ARM_RABS32, 253)
	267	RELOC_NUMBER (R_ARM_RPC24, 254)
	268	RELOC_NUMBER (R_ARM_RBASE, 255)
	269
	270	/* Unofficial names for some of the relocs. */
	271	FAKE_RELOC (R_ARM_GOTOFF, R_ARM_GOTOFF32) /* 32 bit offset to GOT. */
	272	FAKE_RELOC (R_ARM_THM_PC22, R_ARM_THM_CALL)
	273	FAKE_RELOC (R_ARM_THM_PC11, R_ARM_THM_JUMP11)
	274	FAKE_RELOC (R_ARM_THM_PC9, R_ARM_THM_JUMP8)
	275
	276	/* Relocs with both a different name, and (apparently) different meaning in
	277	GNU usage. */
	278	FAKE_RELOC (R_ARM_GOTPC, R_ARM_BASE_PREL) /* 32 bit PC relative offset to GOT. */
	279	FAKE_RELOC (R_ARM_GOT32, R_ARM_GOT_BREL) /* 32 bit GOT entry. */
	280	FAKE_RELOC (R_ARM_ROSEGREL32, R_ARM_SBREL31) /* ??? */
	281	FAKE_RELOC (R_ARM_AMP_VCALL9, R_ARM_BREL_ADJ) /* Thumb-something. Not used. */
7c90103b NC	282
7c90103b NC	283	END_RELOC_NUMBERS (R_ARM_max = 256)
252b5132	284
ee065d83	285	#ifdef BFD_ARCH_SIZE
104d59d1	286	/* EABI object attributes. */
ee065d83 PB	287
	288	enum
	289	{
104d59d1 JM	290	/* 0-3 are generic. */
104d59d1 JM	291	Tag_CPU_raw_name = 4,
ee065d83 PB	292	Tag_CPU_name,
	293	Tag_CPU_arch,
	294	Tag_CPU_arch_profile,
	295	Tag_ARM_ISA_use,
	296	Tag_THUMB_ISA_use,
75375b3e	297	Tag_FP_arch,
ee065d83	298	Tag_WMMX_arch,
91e22acd	299	Tag_Advanced_SIMD_arch,
ee065d83 PB	300	Tag_PCS_config,
	301	Tag_ABI_PCS_R9_use,
	302	Tag_ABI_PCS_RW_data,
	303	Tag_ABI_PCS_RO_data,
	304	Tag_ABI_PCS_GOT_use,
	305	Tag_ABI_PCS_wchar_t,
	306	Tag_ABI_FP_rounding,
	307	Tag_ABI_FP_denormal,
	308	Tag_ABI_FP_exceptions,
	309	Tag_ABI_FP_user_exceptions,
	310	Tag_ABI_FP_number_model,
75375b3e MGD	311	Tag_ABI_align_needed,
75375b3e MGD	312	Tag_ABI_align_preserved,
ee065d83 PB	313	Tag_ABI_enum_size,
	314	Tag_ABI_HardFP_use,
	315	Tag_ABI_VFP_args,
	316	Tag_ABI_WMMX_args,
	317	Tag_ABI_optimization_goals,
	318	Tag_ABI_FP_optimization_goals,
91e22acd	319	/* 32 is generic (Tag_compatibility). */
8e79c3df CM	320	Tag_undefined33 = 33,
8e79c3df CM	321	Tag_CPU_unaligned_access,
91e22acd	322	Tag_undefined35,
75375b3e	323	Tag_FP_HP_extension,
8e79c3df	324	Tag_undefined37,
91e22acd AS	325	Tag_ABI_FP_16bit_format,
91e22acd AS	326	Tag_undefined39,
cd21e546 MGD	327	Tag_undefined40,
	328	Tag_undefined41,
	329	Tag_MPextension_use,
	330	Tag_undefined_43,
	331	Tag_DIV_use,
15afaa63	332	Tag_DSP_extension = 46,
a7ad558c	333	Tag_MVE_arch = 48,
99db83d0	334	Tag_PAC_extension = 50,
4b535030	335	Tag_BTI_extension = 52,
b81ee92f	336	Tag_BTI_use = 74,
c9fed665	337	Tag_PACRET_use = 76,
91e22acd AS	338	Tag_nodefaults = 64,
	339	Tag_also_compatible_with,
	340	Tag_T2EE_use,
	341	Tag_conformance,
	342	Tag_Virtualization_use,
	343	Tag_undefined69,
75375b3e MGD	344	Tag_MPextension_use_legacy,
	345
	346	/* The following tags are legacy names for other tags. */
	347	Tag_VFP_arch = Tag_FP_arch,
	348	Tag_ABI_align8_needed = Tag_ABI_align_needed,
	349	Tag_ABI_align8_preserved = Tag_ABI_align_preserved,
	350	Tag_VFP_HP_extension = Tag_FP_HP_extension
ee065d83 PB	351	};
ee065d83 PB	352
5c294fee TG	353	/* Values for Tag_ABI_FP_number_model. */
	354	enum
	355	{
	356	AEABI_FP_number_model_none = 0,
	357	AEABI_FP_number_model_ieee754_number = 1,
	358	AEABI_FP_number_model_rtabi = 2,
	359	AEABI_FP_number_model_ieee754_all = 3
	360	};
	361
	362	/* Values for Tag_ABI_VFP_args. */
	363	enum
	364	{
	365	AEABI_VFP_args_base = 0,
	366	AEABI_VFP_args_vfp = 1,
	367	AEABI_VFP_args_toolchain = 2,
	368	AEABI_VFP_args_compatible = 3
	369	};
ee065d83 PB	370	#endif
ee065d83 PB	371
e16bb312	372	/* The name of the note section used to identify arm variants. */
5a6c6817	373	#define ARM_NOTE_SECTION ".note.gnu.arm.ident"
40a18ebd NC	374
	375	/* Special section names. */
	376	#define ELF_STRING_ARM_unwind ".ARM.exidx"
	377	#define ELF_STRING_ARM_unwind_info ".ARM.extab"
	378	#define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx."
	379	#define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab."
	380
35fc36a8 RS	381	enum arm_st_branch_type {
	382	ST_BRANCH_TO_ARM,
	383	ST_BRANCH_TO_THUMB,
63e1a0fc	384	ST_BRANCH_LONG,
39d911fc TP	385	ST_BRANCH_UNKNOWN,
39d911fc TP	386	ST_BRANCH_ENUM_SIZE
35fc36a8 RS	387	};
35fc36a8 RS	388
39d911fc TP	389	#define NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS 2
	390	#define ENUM_ARM_ST_BRANCH_TYPE_BITMASK \
	391	((1 << NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS) - 1)
	392
	393	#define ARM_GET_SYM_BRANCH_TYPE(STI) \
	394	((enum arm_st_branch_type) ((STI) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK))
	395	#ifdef BFD_ASSERT
	396	#define ARM_SET_SYM_BRANCH_TYPE(STI, TYPE) \
	397	do { \
	398	BFD_ASSERT (TYPE <= ST_BRANCH_ENUM_SIZE); \
	399	BFD_ASSERT ((1 << NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS) \
	400	>= ST_BRANCH_ENUM_SIZE); \
	401	(STI) = (((STI) & ~ENUM_ARM_ST_BRANCH_TYPE_BITMASK) \
	402	\| ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK)); \
	403	} while (0)
	404	#else
	405	#define ARM_SET_SYM_BRANCH_TYPE(STI, TYPE) \
	406	(STI) = (((STI) & ~ENUM_ARM_ST_BRANCH_TYPE_BITMASK) \
	407	\| ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK))
	408	#endif
35fc36a8	409
8725b940	410	#endif /* _ELF_ARM_H */