lib/Target/ARM/ARMBuildAttrs.h

   1 //===-------- ARMBuildAttrs.h - ARM Build Attributes ------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains enumerations and support routines for ARM build attributes
  11 // as defined in ARM ABI addenda document (ABI release 2.08).
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef __TARGET_ARMBUILDATTRS_H__
  16 #define __TARGET_ARMBUILDATTRS_H__
  17
  18 namespace ARMBuildAttrs {
  19   enum SpecialAttr {
  20     // This is for the .cpu asm attr. It translates into one or more
  21     // AttrType (below) entries in the .ARM.attributes section in the ELF.
  22     SEL_CPU
  23   };
  24
  25   enum AttrType {
  26     // Rest correspond to ELF/.ARM.attributes
  27     File                      = 1,
  28     Section                   = 2,
  29     Symbol                    = 3,
  30     CPU_raw_name              = 4,
  31     CPU_name                  = 5,
  32     CPU_arch                  = 6,
  33     CPU_arch_profile          = 7,
  34     ARM_ISA_use               = 8,
  35     THUMB_ISA_use             = 9,
  36     VFP_arch                  = 10,
  37     WMMX_arch                 = 11,
  38     Advanced_SIMD_arch        = 12,
  39     PCS_config                = 13,
  40     ABI_PCS_R9_use            = 14,
  41     ABI_PCS_RW_data           = 15,
  42     ABI_PCS_RO_data           = 16,
  43     ABI_PCS_GOT_use           = 17,
  44     ABI_PCS_wchar_t           = 18,
  45     ABI_FP_rounding           = 19,
  46     ABI_FP_denormal           = 20,
  47     ABI_FP_exceptions         = 21,
  48     ABI_FP_user_exceptions    = 22,
  49     ABI_FP_number_model       = 23,
  50     ABI_align8_needed         = 24,
  51     ABI_align8_preserved      = 25,
  52     ABI_enum_size             = 26,
  53     ABI_HardFP_use            = 27,
  54     ABI_VFP_args              = 28,
  55     ABI_WMMX_args             = 29,
  56     ABI_optimization_goals    = 30,
  57     ABI_FP_optimization_goals = 31,
  58     compatibility             = 32,
  59     CPU_unaligned_access      = 34,
  60     VFP_HP_extension          = 36,
  61     ABI_FP_16bit_format       = 38,
  62     MPextension_use           = 42, // was 70, 2.08 ABI
  63     DIV_use                   = 44,
  64     nodefaults                = 64,
  65     also_compatible_with      = 65,
  66     T2EE_use                  = 66,
  67     conformance               = 67,
  68     Virtualization_use        = 68,
  69     MPextension_use_old       = 70
  70   };
  71
  72   // Magic numbers for .ARM.attributes
  73   enum AttrMagic {
  74     Format_Version  = 0x41
  75   };
  76
  77   // Legal Values for CPU_arch, (=6), uleb128
  78   enum CPUArch {
  79     Pre_v4       = 0,
  80     v4       = 1,   // e.g. SA110
  81     v4T      = 2,   // e.g. ARM7TDMI
  82     v5T      = 3,   // e.g. ARM9TDMI
  83     v5TE     = 4,   // e.g. ARM946E_S
  84     v5TEJ    = 5,   // e.g. ARM926EJ_S
  85     v6       = 6,   // e.g. ARM1136J_S
  86     v6KZ     = 7,   // e.g. ARM1176JZ_S
  87     v6T2     = 8,   // e.g. ARM1156T2F_S
  88     v6K      = 9,   // e.g. ARM1136J_S
  89     v7       = 10,  // e.g. Cortex A8, Cortex M3
  90     v6_M     = 11,  // e.g. Cortex M1
  91     v6S_M    = 12,  // v6_M with the System extensions
  92     v7E_M    = 13   // v7_M with DSP extensions
  93   };
  94
  95   enum CPUArchProfile { // (=7), uleb128
  96     Not_Applicable = 0, // pre v7, or cross-profile code
  97     ApplicationProfile = (0x41), // 'A' (e.g. for Cortex A8)
  98     RealTimeProfile = (0x52), // 'R' (e.g. for Cortex R4)
  99     MicroControllerProfile = (0x4D), // 'M' (e.g. for Cortex M3)
 100     SystemProfile = (0x53) // 'S' Application or real-time profile
 101   };
 102
 103   // The following have a lot of common use cases
 104   enum {
 105     //ARMISAUse (=8), uleb128  and THUMBISAUse (=9), uleb128
 106     Not_Allowed = 0,
 107     Allowed = 1,
 108
 109     // FP_arch (=10), uleb128 (formerly Tag_VFP_arch = 10)
 110     AllowFPv2  = 2, // v2 FP ISA permitted (implies use of the v1 FP ISA)
 111     AllowFPv3A = 3, // v3 FP ISA permitted (implies use of the v2 FP ISA)
 112     AllowFPv3B = 4, // v3 FP ISA permitted, but only D0-D15, S0-S31
 113     AllowFPv4A = 5, // v4 FP ISA permitted (implies use of v3 FP ISA)
 114     AllowFPv4B = 6, // v4 FP ISA was permitted, but only D0-D15, S0-S31
 115
 116     // Tag_WMMX_arch, (=11), uleb128
 117     AllowThumb32 = 2, // 32-bit Thumb (implies 16-bit instructions)
 118
 119     // Tag_WMMX_arch, (=11), uleb128
 120     AllowWMMXv1 = 2,  // The user permitted this entity to use WMMX v2
 121
 122     // Tag_ABI_FP_denormal, (=20), uleb128
 123     PreserveFPSign = 2, // sign when flushed-to-zero is preserved
 124
 125     // Tag_ABI_FP_number_model, (=23), uleb128
 126     AllowRTABI = 2,  // numbers, infinities, and one quiet NaN (see [RTABI])
 127     AllowIEE754 = 3 // this code to use all the IEEE 754-defined FP encodings
 128   };
 129 }
 130
 131 #endif // __TARGET_ARMBUILDATTRS_H__