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      1 //===--- MipsABIFlags.h - MIPS ABI flags ----------------------------------===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 //
      9 // This file defines the constants for the ABI flags structure contained
     10 // in the .MIPS.abiflags section.
     11 //
     12 // https://dmz-portal.mips.com/wiki/MIPS_O32_ABI_-_FR0_and_FR1_Interlinking
     13 //
     14 //===----------------------------------------------------------------------===//
     15 
     16 #ifndef LLVM_SUPPORT_MIPSABIFLAGS_H
     17 #define LLVM_SUPPORT_MIPSABIFLAGS_H
     18 
     19 namespace llvm {
     20 namespace Mips {
     21 
     22 // Values for the xxx_size bytes of an ABI flags structure.
     23 enum AFL_REG {
     24   AFL_REG_NONE = 0x00, // No registers
     25   AFL_REG_32 = 0x01,   // 32-bit registers
     26   AFL_REG_64 = 0x02,   // 64-bit registers
     27   AFL_REG_128 = 0x03   // 128-bit registers
     28 };
     29 
     30 // Masks for the ases word of an ABI flags structure.
     31 enum AFL_ASE {
     32   AFL_ASE_DSP = 0x00000001,       // DSP ASE
     33   AFL_ASE_DSPR2 = 0x00000002,     // DSP R2 ASE
     34   AFL_ASE_EVA = 0x00000004,       // Enhanced VA Scheme
     35   AFL_ASE_MCU = 0x00000008,       // MCU (MicroController) ASE
     36   AFL_ASE_MDMX = 0x00000010,      // MDMX ASE
     37   AFL_ASE_MIPS3D = 0x00000020,    // MIPS-3D ASE
     38   AFL_ASE_MT = 0x00000040,        // MT ASE
     39   AFL_ASE_SMARTMIPS = 0x00000080, // SmartMIPS ASE
     40   AFL_ASE_VIRT = 0x00000100,      // VZ ASE
     41   AFL_ASE_MSA = 0x00000200,       // MSA ASE
     42   AFL_ASE_MIPS16 = 0x00000400,    // MIPS16 ASE
     43   AFL_ASE_MICROMIPS = 0x00000800, // MICROMIPS ASE
     44   AFL_ASE_XPA = 0x00001000,       // XPA ASE
     45   AFL_ASE_CRC = 0x00008000,       // CRC ASE
     46   AFL_ASE_GINV = 0x00020000       // GINV ASE
     47 };
     48 
     49 // Values for the isa_ext word of an ABI flags structure.
     50 enum AFL_EXT {
     51   AFL_EXT_NONE = 0,         // None
     52   AFL_EXT_XLR = 1,          // RMI Xlr instruction
     53   AFL_EXT_OCTEON2 = 2,      // Cavium Networks Octeon2
     54   AFL_EXT_OCTEONP = 3,      // Cavium Networks OcteonP
     55   AFL_EXT_LOONGSON_3A = 4,  // Loongson 3A
     56   AFL_EXT_OCTEON = 5,       // Cavium Networks Octeon
     57   AFL_EXT_5900 = 6,         // MIPS R5900 instruction
     58   AFL_EXT_4650 = 7,         // MIPS R4650 instruction
     59   AFL_EXT_4010 = 8,         // LSI R4010 instruction
     60   AFL_EXT_4100 = 9,         // NEC VR4100 instruction
     61   AFL_EXT_3900 = 10,        // Toshiba R3900 instruction
     62   AFL_EXT_10000 = 11,       // MIPS R10000 instruction
     63   AFL_EXT_SB1 = 12,         // Broadcom SB-1 instruction
     64   AFL_EXT_4111 = 13,        // NEC VR4111/VR4181 instruction
     65   AFL_EXT_4120 = 14,        // NEC VR4120 instruction
     66   AFL_EXT_5400 = 15,        // NEC VR5400 instruction
     67   AFL_EXT_5500 = 16,        // NEC VR5500 instruction
     68   AFL_EXT_LOONGSON_2E = 17, // ST Microelectronics Loongson 2E
     69   AFL_EXT_LOONGSON_2F = 18, // ST Microelectronics Loongson 2F
     70   AFL_EXT_OCTEON3 = 19      // Cavium Networks Octeon3
     71 };
     72 
     73 // Values for the flags1 word of an ABI flags structure.
     74 enum AFL_FLAGS1 { AFL_FLAGS1_ODDSPREG = 1 };
     75 
     76 // MIPS object attribute tags
     77 enum {
     78   Tag_GNU_MIPS_ABI_FP = 4,  // Floating-point ABI used by this object file
     79   Tag_GNU_MIPS_ABI_MSA = 8, // MSA ABI used by this object file
     80 };
     81 
     82 // Values for the fp_abi word of an ABI flags structure
     83 // and for the Tag_GNU_MIPS_ABI_FP attribute tag.
     84 enum Val_GNU_MIPS_ABI_FP {
     85   Val_GNU_MIPS_ABI_FP_ANY = 0,    // not tagged
     86   Val_GNU_MIPS_ABI_FP_DOUBLE = 1, // hard float / -mdouble-float
     87   Val_GNU_MIPS_ABI_FP_SINGLE = 2, // hard float / -msingle-float
     88   Val_GNU_MIPS_ABI_FP_SOFT = 3,   // soft float
     89   Val_GNU_MIPS_ABI_FP_OLD_64 = 4, // -mips32r2 -mfp64
     90   Val_GNU_MIPS_ABI_FP_XX = 5,     // -mfpxx
     91   Val_GNU_MIPS_ABI_FP_64 = 6,     // -mips32r2 -mfp64
     92   Val_GNU_MIPS_ABI_FP_64A = 7     // -mips32r2 -mfp64 -mno-odd-spreg
     93 };
     94 
     95 // Values for the Tag_GNU_MIPS_ABI_MSA attribute tag.
     96 enum Val_GNU_MIPS_ABI_MSA {
     97   Val_GNU_MIPS_ABI_MSA_ANY = 0, // not tagged
     98   Val_GNU_MIPS_ABI_MSA_128 = 1  // 128-bit MSA
     99 };
    100 }
    101 }
    102 
    103 #endif
    104