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//===-- ARMBuildAttrs.h - ARM Build Attributes ------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains enumerations and support routines for ARM build attributes
// as defined in ARM ABI addenda document (ABI release 2.08).
//
//===----------------------------------------------------------------------===//
#ifndef __TARGET_ARMBUILDATTRS_H__
#define __TARGET_ARMBUILDATTRS_H__
namespace ARMBuildAttrs {
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 {
// Rest correspond to ELF/.ARM.attributes
File = 1,
Section = 2,
Symbol = 3,
CPU_raw_name = 4,
CPU_name = 5,
CPU_arch = 6,
CPU_arch_profile = 7,
ARM_ISA_use = 8,
THUMB_ISA_use = 9,
VFP_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_align8_needed = 24,
ABI_align8_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,
VFP_HP_extension = 36,
ABI_FP_16bit_format = 38,
MPextension_use = 42, // was 70, 2.08 ABI
DIV_use = 44,
nodefaults = 64,
also_compatible_with = 65,
T2EE_use = 66,
conformance = 67,
Virtualization_use = 68,
MPextension_use_old = 70
};
// Magic numbers for .ARM.attributes
enum AttrMagic {
Format_Version = 0x41
};
// 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. ARM1156T2F_S
v6K = 9, // e.g. ARM1136J_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 = 14 // v8, 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 {
//ARMISAUse (=8), uleb128 and THUMBISAUse (=9), uleb128
Not_Allowed = 0,
Allowed = 1,
AllowedNeonV8 = 3,
// 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
AllowV8FPA = 7, // Use of the ARM v8-A FP ISA was permitted
AllowV8FPB = 8, // Use of the ARM v8-A FP ISA was permitted, but only D0-D15, S0-S31
// Tag_WMMX_arch, (=11), uleb128
AllowThumb32 = 2, // 32-bit Thumb (implies 16-bit instructions)
// Tag_WMMX_arch, (=11), uleb128
AllowWMMXv1 = 2, // The user permitted this entity to use WMMX v2
// Tag_ABI_FP_denormal, (=20), uleb128
PreserveFPSign = 2, // sign when flushed-to-zero is preserved
// Tag_ABI_FP_number_model, (=23), uleb128
AllowRTABI = 2, // numbers, infinities, and one quiet NaN (see [RTABI])
AllowIEE754 = 3 // this code to use all the IEEE 754-defined FP encodings
};
}
#endif // __TARGET_ARMBUILDATTRS_H__
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