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7121fa671b
Summary: The cpr1_size field describes the minimum register width to run the program rather than the size of the registers on the target. MIPS32r6 was acting as if -mfp64 has been given because it starts off with 64-bit FPU registers. Differential Revision: http://reviews.llvm.org/D4538 llvm-svn: 213243
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
//===-- MipsABIFlagsSection.cpp - Mips ELF ABI Flags Section ---*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MipsABIFlagsSection.h"
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using namespace llvm;
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uint8_t MipsABIFlagsSection::getFpABIValue() {
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switch (FpABI) {
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case FpABIKind::ANY:
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return Val_GNU_MIPS_ABI_FP_ANY;
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case FpABIKind::XX:
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return Val_GNU_MIPS_ABI_FP_XX;
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case FpABIKind::S32:
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return Val_GNU_MIPS_ABI_FP_DOUBLE;
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case FpABIKind::S64:
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if (Is32BitABI)
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return OddSPReg ? Val_GNU_MIPS_ABI_FP_64 : Val_GNU_MIPS_ABI_FP_64A;
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return Val_GNU_MIPS_ABI_FP_DOUBLE;
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}
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llvm_unreachable("unexpected fp abi value");
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}
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StringRef MipsABIFlagsSection::getFpABIString(FpABIKind Value) {
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switch (Value) {
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case FpABIKind::XX:
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return "xx";
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case FpABIKind::S32:
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return "32";
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case FpABIKind::S64:
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return "64";
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default:
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llvm_unreachable("unsupported fp abi value");
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}
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}
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uint8_t MipsABIFlagsSection::getCPR1SizeValue() {
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if (FpABI == FpABIKind::XX)
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return (uint8_t)AFL_REG_32;
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return (uint8_t)CPR1Size;
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}
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namespace llvm {
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MCStreamer &operator<<(MCStreamer &OS, MipsABIFlagsSection &ABIFlagsSection) {
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// Write out a Elf_Internal_ABIFlags_v0 struct
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OS.EmitIntValue(ABIFlagsSection.getVersionValue(), 2); // version
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OS.EmitIntValue(ABIFlagsSection.getISALevelValue(), 1); // isa_level
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OS.EmitIntValue(ABIFlagsSection.getISARevisionValue(), 1); // isa_rev
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OS.EmitIntValue(ABIFlagsSection.getGPRSizeValue(), 1); // gpr_size
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OS.EmitIntValue(ABIFlagsSection.getCPR1SizeValue(), 1); // cpr1_size
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OS.EmitIntValue(ABIFlagsSection.getCPR2SizeValue(), 1); // cpr2_size
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OS.EmitIntValue(ABIFlagsSection.getFpABIValue(), 1); // fp_abi
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OS.EmitIntValue(ABIFlagsSection.getISAExtensionSetValue(), 4); // isa_ext
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OS.EmitIntValue(ABIFlagsSection.getASESetValue(), 4); // ases
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OS.EmitIntValue(ABIFlagsSection.getFlags1Value(), 4); // flags1
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OS.EmitIntValue(ABIFlagsSection.getFlags2Value(), 4); // flags2
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return OS;
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}
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}
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