src/llvm/lib/Target/Mips/MCTargetDesc/MipsABIFlagsSection.cpp

   1 //===-- MipsABIFlagsSection.cpp - Mips ELF ABI Flags Section ---*- 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 #include "MipsABIFlagsSection.h"
  11
  12 using namespace llvm;
  13
  14 uint8_t MipsABIFlagsSection::getFpABIValue() {
  15   switch (FpABI) {
  16   case FpABIKind::ANY:
  17     return Val_GNU_MIPS_ABI_FP_ANY;
  18   case FpABIKind::XX:
  19     return Val_GNU_MIPS_ABI_FP_XX;
  20   case FpABIKind::S32:
  21     return Val_GNU_MIPS_ABI_FP_DOUBLE;
  22   case FpABIKind::S64:
  23     if (Is32BitABI)
  24       return OddSPReg ? Val_GNU_MIPS_ABI_FP_64 : Val_GNU_MIPS_ABI_FP_64A;
  25     return Val_GNU_MIPS_ABI_FP_DOUBLE;
  26   }
  27
  28   llvm_unreachable("unexpected fp abi value");
  29 }
  30
  31 StringRef MipsABIFlagsSection::getFpABIString(FpABIKind Value) {
  32   switch (Value) {
  33   case FpABIKind::XX:
  34     return "xx";
  35   case FpABIKind::S32:
  36     return "32";
  37   case FpABIKind::S64:
  38     return "64";
  39   default:
  40     llvm_unreachable("unsupported fp abi value");
  41   }
  42 }
  43
  44 uint8_t MipsABIFlagsSection::getCPR1SizeValue() {
  45   if (FpABI == FpABIKind::XX)
  46     return (uint8_t)AFL_REG_32;
  47   return (uint8_t)CPR1Size;
  48 }
  49
  50 namespace llvm {
  51 MCStreamer &operator<<(MCStreamer &OS, MipsABIFlagsSection &ABIFlagsSection) {
  52   // Write out a Elf_Internal_ABIFlags_v0 struct
  53   OS.EmitIntValue(ABIFlagsSection.getVersionValue(), 2);         // version
  54   OS.EmitIntValue(ABIFlagsSection.getISALevelValue(), 1);        // isa_level
  55   OS.EmitIntValue(ABIFlagsSection.getISARevisionValue(), 1);     // isa_rev
  56   OS.EmitIntValue(ABIFlagsSection.getGPRSizeValue(), 1);         // gpr_size
  57   OS.EmitIntValue(ABIFlagsSection.getCPR1SizeValue(), 1);        // cpr1_size
  58   OS.EmitIntValue(ABIFlagsSection.getCPR2SizeValue(), 1);        // cpr2_size
  59   OS.EmitIntValue(ABIFlagsSection.getFpABIValue(), 1);           // fp_abi
  60   OS.EmitIntValue(ABIFlagsSection.getISAExtensionSetValue(), 4); // isa_ext
  61   OS.EmitIntValue(ABIFlagsSection.getASESetValue(), 4);          // ases
  62   OS.EmitIntValue(ABIFlagsSection.getFlags1Value(), 4);          // flags1
  63   OS.EmitIntValue(ABIFlagsSection.getFlags2Value(), 4);          // flags2
  64   return OS;
  65 }
  66 }