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 Mips::Val_GNU_MIPS_ABI_FP_ANY; 18 case FpABIKind::SOFT: 19 return Mips::Val_GNU_MIPS_ABI_FP_SOFT; 20 case FpABIKind::XX: 21 return Mips::Val_GNU_MIPS_ABI_FP_XX; 22 case FpABIKind::S32: 23 return Mips::Val_GNU_MIPS_ABI_FP_DOUBLE; 24 case FpABIKind::S64: 25 if (Is32BitABI) 26 return OddSPReg ? Mips::Val_GNU_MIPS_ABI_FP_64 27 : Mips::Val_GNU_MIPS_ABI_FP_64A; 28 return Mips::Val_GNU_MIPS_ABI_FP_DOUBLE; 29 } 30 31 llvm_unreachable("unexpected fp abi value"); 32 } 33 34 StringRef MipsABIFlagsSection::getFpABIString(FpABIKind Value) { 35 switch (Value) { 36 case FpABIKind::XX: 37 return "xx"; 38 case FpABIKind::S32: 39 return "32"; 40 case FpABIKind::S64: 41 return "64"; 42 default: 43 llvm_unreachable("unsupported fp abi value"); 44 } 45 } 46 47 uint8_t MipsABIFlagsSection::getCPR1SizeValue() { 48 if (FpABI == FpABIKind::XX) 49 return (uint8_t)Mips::AFL_REG_32; 50 return (uint8_t)CPR1Size; 51 } 52 53 namespace llvm { 54 MCStreamer &operator<<(MCStreamer &OS, MipsABIFlagsSection &ABIFlagsSection) { 55 // Write out a Elf_Internal_ABIFlags_v0 struct 56 OS.EmitIntValue(ABIFlagsSection.getVersionValue(), 2); // version 57 OS.EmitIntValue(ABIFlagsSection.getISALevelValue(), 1); // isa_level 58 OS.EmitIntValue(ABIFlagsSection.getISARevisionValue(), 1); // isa_rev 59 OS.EmitIntValue(ABIFlagsSection.getGPRSizeValue(), 1); // gpr_size 60 OS.EmitIntValue(ABIFlagsSection.getCPR1SizeValue(), 1); // cpr1_size 61 OS.EmitIntValue(ABIFlagsSection.getCPR2SizeValue(), 1); // cpr2_size 62 OS.EmitIntValue(ABIFlagsSection.getFpABIValue(), 1); // fp_abi 63 OS.EmitIntValue(ABIFlagsSection.getISAExtensionValue(), 4); // isa_ext 64 OS.EmitIntValue(ABIFlagsSection.getASESetValue(), 4); // ases 65 OS.EmitIntValue(ABIFlagsSection.getFlags1Value(), 4); // flags1 66 OS.EmitIntValue(ABIFlagsSection.getFlags2Value(), 4); // flags2 67 return OS; 68 } 69 } 70
