247 lines
8.6 KiB
C++
247 lines
8.6 KiB
C++
//===-- ARMBuildAttributes.h - ARM Build Attributes -------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains enumerations and support routines for ARM build attributes
|
|
// as defined in ARM ABI addenda document (ABI release 2.08).
|
|
//
|
|
// ELF for the ARM Architecture r2.09 - November 30, 2012
|
|
//
|
|
// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0044e/IHI0044E_aaelf.pdf
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_ARMBUILDATTRIBUTES_H
|
|
#define LLVM_SUPPORT_ARMBUILDATTRIBUTES_H
|
|
|
|
#include "llvm/Support/ELFAttributes.h"
|
|
|
|
namespace llvm {
|
|
namespace ARMBuildAttrs {
|
|
|
|
extern const TagNameMap ARMAttributeTags;
|
|
|
|
enum SpecialAttr {
|
|
// This is for the .cpu asm attr. It translates into one or more
|
|
// AttrType (below) entries in the .ARM.attributes section in the ELF.
|
|
SEL_CPU
|
|
};
|
|
|
|
enum AttrType : unsigned {
|
|
// Rest correspond to ELF/.ARM.attributes
|
|
File = 1,
|
|
CPU_raw_name = 4,
|
|
CPU_name = 5,
|
|
CPU_arch = 6,
|
|
CPU_arch_profile = 7,
|
|
ARM_ISA_use = 8,
|
|
THUMB_ISA_use = 9,
|
|
FP_arch = 10,
|
|
WMMX_arch = 11,
|
|
Advanced_SIMD_arch = 12,
|
|
PCS_config = 13,
|
|
ABI_PCS_R9_use = 14,
|
|
ABI_PCS_RW_data = 15,
|
|
ABI_PCS_RO_data = 16,
|
|
ABI_PCS_GOT_use = 17,
|
|
ABI_PCS_wchar_t = 18,
|
|
ABI_FP_rounding = 19,
|
|
ABI_FP_denormal = 20,
|
|
ABI_FP_exceptions = 21,
|
|
ABI_FP_user_exceptions = 22,
|
|
ABI_FP_number_model = 23,
|
|
ABI_align_needed = 24,
|
|
ABI_align_preserved = 25,
|
|
ABI_enum_size = 26,
|
|
ABI_HardFP_use = 27,
|
|
ABI_VFP_args = 28,
|
|
ABI_WMMX_args = 29,
|
|
ABI_optimization_goals = 30,
|
|
ABI_FP_optimization_goals = 31,
|
|
compatibility = 32,
|
|
CPU_unaligned_access = 34,
|
|
FP_HP_extension = 36,
|
|
ABI_FP_16bit_format = 38,
|
|
MPextension_use = 42, // recoded from 70 (ABI r2.08)
|
|
DIV_use = 44,
|
|
DSP_extension = 46,
|
|
MVE_arch = 48,
|
|
also_compatible_with = 65,
|
|
conformance = 67,
|
|
Virtualization_use = 68,
|
|
|
|
/// Legacy Tags
|
|
Section = 2, // deprecated (ABI r2.09)
|
|
Symbol = 3, // deprecated (ABI r2.09)
|
|
ABI_align8_needed = 24, // renamed to ABI_align_needed (ABI r2.09)
|
|
ABI_align8_preserved = 25, // renamed to ABI_align_preserved (ABI r2.09)
|
|
nodefaults = 64, // deprecated (ABI r2.09)
|
|
T2EE_use = 66, // deprecated (ABI r2.09)
|
|
MPextension_use_old = 70 // recoded to MPextension_use (ABI r2.08)
|
|
};
|
|
|
|
// Legal Values for CPU_arch, (=6), uleb128
|
|
enum CPUArch {
|
|
Pre_v4 = 0,
|
|
v4 = 1, // e.g. SA110
|
|
v4T = 2, // e.g. ARM7TDMI
|
|
v5T = 3, // e.g. ARM9TDMI
|
|
v5TE = 4, // e.g. ARM946E_S
|
|
v5TEJ = 5, // e.g. ARM926EJ_S
|
|
v6 = 6, // e.g. ARM1136J_S
|
|
v6KZ = 7, // e.g. ARM1176JZ_S
|
|
v6T2 = 8, // e.g. ARM1156T2_S
|
|
v6K = 9, // e.g. ARM1176JZ_S
|
|
v7 = 10, // e.g. Cortex A8, Cortex M3
|
|
v6_M = 11, // e.g. Cortex M1
|
|
v6S_M = 12, // v6_M with the System extensions
|
|
v7E_M = 13, // v7_M with DSP extensions
|
|
v8_A = 14, // v8_A AArch32
|
|
v8_R = 15, // e.g. Cortex R52
|
|
v8_M_Base= 16, // v8_M_Base AArch32
|
|
v8_M_Main= 17, // v8_M_Main AArch32
|
|
v8_1_M_Main=21, // v8_1_M_Main AArch32
|
|
};
|
|
|
|
enum CPUArchProfile { // (=7), uleb128
|
|
Not_Applicable = 0, // pre v7, or cross-profile code
|
|
ApplicationProfile = (0x41), // 'A' (e.g. for Cortex A8)
|
|
RealTimeProfile = (0x52), // 'R' (e.g. for Cortex R4)
|
|
MicroControllerProfile = (0x4D), // 'M' (e.g. for Cortex M3)
|
|
SystemProfile = (0x53) // 'S' Application or real-time profile
|
|
};
|
|
|
|
// The following have a lot of common use cases
|
|
enum {
|
|
Not_Allowed = 0,
|
|
Allowed = 1,
|
|
|
|
// Tag_ARM_ISA_use (=8), uleb128
|
|
|
|
// Tag_THUMB_ISA_use, (=9), uleb128
|
|
AllowThumb32 = 2, // 32-bit Thumb (implies 16-bit instructions)
|
|
AllowThumbDerived = 3, // Thumb allowed, derived from arch/profile
|
|
|
|
// Tag_FP_arch (=10), uleb128 (formerly Tag_VFP_arch = 10)
|
|
AllowFPv2 = 2, // v2 FP ISA permitted (implies use of the v1 FP ISA)
|
|
AllowFPv3A = 3, // v3 FP ISA permitted (implies use of the v2 FP ISA)
|
|
AllowFPv3B = 4, // v3 FP ISA permitted, but only D0-D15, S0-S31
|
|
AllowFPv4A = 5, // v4 FP ISA permitted (implies use of v3 FP ISA)
|
|
AllowFPv4B = 6, // v4 FP ISA was permitted, but only D0-D15, S0-S31
|
|
AllowFPARMv8A = 7, // Use of the ARM v8-A FP ISA was permitted
|
|
AllowFPARMv8B = 8, // Use of the ARM v8-A FP ISA was permitted, but only
|
|
// D0-D15, S0-S31
|
|
|
|
// Tag_WMMX_arch, (=11), uleb128
|
|
AllowWMMXv1 = 1, // The user permitted this entity to use WMMX v1
|
|
AllowWMMXv2 = 2, // The user permitted this entity to use WMMX v2
|
|
|
|
// Tag_Advanced_SIMD_arch, (=12), uleb128
|
|
AllowNeon = 1, // SIMDv1 was permitted
|
|
AllowNeon2 = 2, // SIMDv2 was permitted (Half-precision FP, MAC operations)
|
|
AllowNeonARMv8 = 3, // ARM v8-A SIMD was permitted
|
|
AllowNeonARMv8_1a = 4,// ARM v8.1-A SIMD was permitted (RDMA)
|
|
|
|
// Tag_MVE_arch, (=48), uleb128
|
|
AllowMVEInteger = 1, // integer-only MVE was permitted
|
|
AllowMVEIntegerAndFloat = 2, // both integer and floating point MVE were permitted
|
|
|
|
// Tag_ABI_PCS_R9_use, (=14), uleb128
|
|
R9IsGPR = 0, // R9 used as v6 (just another callee-saved register)
|
|
R9IsSB = 1, // R9 used as a global static base rgister
|
|
R9IsTLSPointer = 2, // R9 used as a thread local storage pointer
|
|
R9Reserved = 3, // R9 not used by code associated with attributed entity
|
|
|
|
// Tag_ABI_PCS_RW_data, (=15), uleb128
|
|
AddressRWPCRel = 1, // Address RW static data PC-relative
|
|
AddressRWSBRel = 2, // Address RW static data SB-relative
|
|
AddressRWNone = 3, // No RW static data permitted
|
|
|
|
// Tag_ABI_PCS_RO_data, (=14), uleb128
|
|
AddressROPCRel = 1, // Address RO static data PC-relative
|
|
AddressRONone = 2, // No RO static data permitted
|
|
|
|
// Tag_ABI_PCS_GOT_use, (=17), uleb128
|
|
AddressDirect = 1, // Address imported data directly
|
|
AddressGOT = 2, // Address imported data indirectly (via GOT)
|
|
|
|
// Tag_ABI_PCS_wchar_t, (=18), uleb128
|
|
WCharProhibited = 0, // wchar_t is not used
|
|
WCharWidth2Bytes = 2, // sizeof(wchar_t) == 2
|
|
WCharWidth4Bytes = 4, // sizeof(wchar_t) == 4
|
|
|
|
// Tag_ABI_align_needed, (=24), uleb128
|
|
Align8Byte = 1,
|
|
Align4Byte = 2,
|
|
AlignReserved = 3,
|
|
|
|
// Tag_ABI_align_needed, (=25), uleb128
|
|
AlignNotPreserved = 0,
|
|
AlignPreserve8Byte = 1,
|
|
AlignPreserveAll = 2,
|
|
|
|
// Tag_ABI_FP_denormal, (=20), uleb128
|
|
PositiveZero = 0,
|
|
IEEEDenormals = 1,
|
|
PreserveFPSign = 2, // sign when flushed-to-zero is preserved
|
|
|
|
// Tag_ABI_FP_number_model, (=23), uleb128
|
|
AllowIEEENormal = 1,
|
|
AllowRTABI = 2, // numbers, infinities, and one quiet NaN (see [RTABI])
|
|
AllowIEEE754 = 3, // this code to use all the IEEE 754-defined FP encodings
|
|
|
|
// Tag_ABI_enum_size, (=26), uleb128
|
|
EnumProhibited = 0, // The user prohibited the use of enums when building
|
|
// this entity.
|
|
EnumSmallest = 1, // Enum is smallest container big enough to hold all
|
|
// values.
|
|
Enum32Bit = 2, // Enum is at least 32 bits.
|
|
Enum32BitABI = 3, // Every enumeration visible across an ABI-complying
|
|
// interface contains a value needing 32 bits to encode
|
|
// it; other enums can be containerized.
|
|
|
|
// Tag_ABI_HardFP_use, (=27), uleb128
|
|
HardFPImplied = 0, // FP use should be implied by Tag_FP_arch
|
|
HardFPSinglePrecision = 1, // Single-precision only
|
|
|
|
// Tag_ABI_VFP_args, (=28), uleb128
|
|
BaseAAPCS = 0,
|
|
HardFPAAPCS = 1,
|
|
ToolChainFPPCS = 2,
|
|
CompatibleFPAAPCS = 3,
|
|
|
|
// Tag_FP_HP_extension, (=36), uleb128
|
|
AllowHPFP = 1, // Allow use of Half Precision FP
|
|
|
|
// Tag_FP_16bit_format, (=38), uleb128
|
|
FP16FormatIEEE = 1,
|
|
FP16VFP3 = 2,
|
|
|
|
// Tag_MPextension_use, (=42), uleb128
|
|
AllowMP = 1, // Allow use of MP extensions
|
|
|
|
// Tag_DIV_use, (=44), uleb128
|
|
// Note: AllowDIVExt must be emitted if and only if the permission to use
|
|
// hardware divide cannot be conveyed using AllowDIVIfExists or DisallowDIV
|
|
AllowDIVIfExists = 0, // Allow hardware divide if available in arch, or no
|
|
// info exists.
|
|
DisallowDIV = 1, // Hardware divide explicitly disallowed.
|
|
AllowDIVExt = 2, // Allow hardware divide as optional architecture
|
|
// extension above the base arch specified by
|
|
// Tag_CPU_arch and Tag_CPU_arch_profile.
|
|
|
|
// Tag_Virtualization_use, (=68), uleb128
|
|
AllowTZ = 1,
|
|
AllowVirtualization = 2,
|
|
AllowTZVirtualization = 3
|
|
};
|
|
|
|
} // namespace ARMBuildAttrs
|
|
} // namespace llvm
|
|
|
|
#endif
|