// arm.h -- ELF definitions specific to EM_ARM -*- C++ -*-
-// Copyright 2009, Free Software Foundation, Inc.
+// Copyright (C) 2009-2019 Free Software Foundation, Inc.
// Written by Doug Kwan <dougkwan@google.com>.
// This file is part of elfcpp.
R_ARM_PRIVATE_14 = 126,
R_ARM_PRIVATE_15 = 127,
R_ARM_ME_TOO = 128, // Obsolete
- R_ARM_THM_TLS_DESCSEQ16 = 129,// Static Thumb16
+ R_ARM_THM_TLS_DESCSEQ16 = 129,// Static Thumb16
R_ARM_THM_TLS_DESCSEQ32 = 130,// Static Thumb32
- // 131 - 139 Unallocated
+ // 131 - 135 Unallocated
+ // Relocations for Armv8.1-M Mainline (BF/BFL)
+ R_ARM_THM_BF16 = 136, // Static Thumb32 ((S + A) | T) – P
+ R_ARM_THM_BF12 = 137, // Static Thumb32 ((S + A) | T) – P
+ R_ARM_THM_BF18 = 138, // Static Thumb32 ((S + A) | T) – P
+ // 139 Unallocated
// 140 - 159 Dynamic Reserved for future allocation
- // 160 - 255 Unallocated
+ R_ARM_IRELATIVE = 160, // Dynamic
+ // 161 - 255 Unallocated
+};
+
+// e_flags values used for ARM. We only support flags defined in AAELF.
+
+enum
+{
+ EF_ARM_BE8 = 0x00800000,
+
+ // Mask to extract EABI version, not really a flag value.
+ EF_ARM_EABIMASK = 0xFF000000,
+
+ EF_ARM_EABI_UNKNOWN = 0x00000000,
+ EF_ARM_EABI_VER1 = 0x01000000,
+ EF_ARM_EABI_VER2 = 0x02000000,
+ EF_ARM_EABI_VER3 = 0x03000000,
+ EF_ARM_EABI_VER4 = 0x04000000,
+ EF_ARM_EABI_VER5 = 0x05000000,
+};
+
+// Extract EABI version from flags.
+
+inline Elf_Word
+arm_eabi_version(Elf_Word flags)
+{ return flags & EF_ARM_EABIMASK; }
+
+// EABI_VER5 e_flags values for identifying soft- and hard-float ABI
+// choice.
+enum
+{
+ EF_ARM_ABI_FLOAT_SOFT = 0x200,
+ EF_ARM_ABI_FLOAT_HARD = 0x400,
+};
+
+// Values for the Tag_CPU_arch EABI attribute.
+enum
+{
+ TAG_CPU_ARCH_PRE_V4,
+ TAG_CPU_ARCH_V4,
+ TAG_CPU_ARCH_V4T,
+ TAG_CPU_ARCH_V5T,
+ TAG_CPU_ARCH_V5TE,
+ TAG_CPU_ARCH_V5TEJ,
+ TAG_CPU_ARCH_V6,
+ TAG_CPU_ARCH_V6KZ,
+ TAG_CPU_ARCH_V6T2,
+ TAG_CPU_ARCH_V6K,
+ TAG_CPU_ARCH_V7,
+ TAG_CPU_ARCH_V6_M,
+ TAG_CPU_ARCH_V6S_M,
+ TAG_CPU_ARCH_V7E_M,
+ TAG_CPU_ARCH_V8,
+ MAX_TAG_CPU_ARCH = TAG_CPU_ARCH_V8,
+ // 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.
+ TAG_CPU_ARCH_V4T_PLUS_V6_M = (MAX_TAG_CPU_ARCH + 1)
+};
+
+// EABI object attributes.
+enum
+{
+ // 0-3 are generic.
+ Tag_CPU_raw_name = 4,
+ Tag_CPU_name = 5,
+ Tag_CPU_arch = 6,
+ Tag_CPU_arch_profile = 7,
+ Tag_ARM_ISA_use = 8,
+ Tag_THUMB_ISA_use = 9,
+ Tag_FP_arch = 10,
+ Tag_WMMX_arch = 11,
+ Tag_Advanced_SIMD_arch = 12,
+ Tag_PCS_config = 13,
+ Tag_ABI_PCS_R9_use = 14,
+ Tag_ABI_PCS_RW_data = 15,
+ Tag_ABI_PCS_RO_data = 16,
+ Tag_ABI_PCS_GOT_use = 17,
+ Tag_ABI_PCS_wchar_t = 18,
+ Tag_ABI_FP_rounding = 19,
+ Tag_ABI_FP_denormal = 20,
+ Tag_ABI_FP_exceptions = 21,
+ Tag_ABI_FP_user_exceptions = 22,
+ Tag_ABI_FP_number_model = 23,
+ Tag_ABI_align_needed = 24,
+ Tag_ABI_align_preserved = 25,
+ Tag_ABI_enum_size = 26,
+ Tag_ABI_HardFP_use = 27,
+ Tag_ABI_VFP_args = 28,
+ Tag_ABI_WMMX_args = 29,
+ Tag_ABI_optimization_goals = 30,
+ Tag_ABI_FP_optimization_goals = 31,
+ // 32 is generic (Tag_compatibility).
+ Tag_undefined33 = 33,
+ Tag_CPU_unaligned_access = 34,
+ Tag_undefined35 = 35,
+ Tag_FP_HP_extension = 36,
+ Tag_undefined37 = 37,
+ Tag_ABI_FP_16bit_format = 38,
+ Tag_undefined39 = 39,
+ Tag_undefined40 = 40,
+ Tag_undefined41 = 41,
+ Tag_MPextension_use = 42,
+ Tag_undefined43 = 43,
+ Tag_DIV_use = 44,
+ Tag_MVE_arch = 48,
+ Tag_nodefaults = 64,
+ Tag_also_compatible_with = 65,
+ Tag_T2EE_use = 66,
+ Tag_conformance = 67,
+ Tag_Virtualization_use = 68,
+ Tag_undefined69 = 69,
+ Tag_MPextension_use_legacy = 70,
+
+ // 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_PCS_R9_use.
+enum
+{
+ AEABI_R9_V6 = 0,
+ AEABI_R9_SB = 1,
+ AEABI_R9_TLS = 2,
+ AEABI_R9_unused = 3
+};
+
+// Values for Tag_ABI_PCS_RW_data.
+enum
+{
+ AEABI_PCS_RW_data_absolute = 0,
+ AEABI_PCS_RW_data_PCrel = 1,
+ AEABI_PCS_RW_data_SBrel = 2,
+ AEABI_PCS_RW_data_unused = 3
+};
+
+// Values for Tag_ABI_enum_size.
+enum
+{
+ AEABI_enum_unused = 0,
+ AEABI_enum_short = 1,
+ AEABI_enum_wide = 2,
+ AEABI_enum_forced_wide = 3
+};
+
+// 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
+};
+
+// For Exception Index Table. (Exception handling ABI for the ARM
+// architectue, Section 5)
+enum
+{
+ EXIDX_CANTUNWIND = 1,
};
} // End namespace elfcpp.
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