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//===- MipsABIFlagsSection.h - Mips ELF ABI Flags Section -------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIFLAGSSECTION_H
#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIFLAGSSECTION_H
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MipsABIFlags.h"
#include <cstdint>
namespace llvm {
class MCStreamer;
struct MipsABIFlagsSection {
// Internal representation of the fp_abi related values used in .module.
enum class FpABIKind { ANY, XX, S32, S64, SOFT };
// Version of flags structure.
uint16_t Version = 0;
// The level of the ISA: 1-5, 32, 64.
uint8_t ISALevel = 0;
// The revision of ISA: 0 for MIPS V and below, 1-n otherwise.
uint8_t ISARevision = 0;
// The size of general purpose registers.
Mips::AFL_REG GPRSize = Mips::AFL_REG_NONE;
// The size of co-processor 1 registers.
Mips::AFL_REG CPR1Size = Mips::AFL_REG_NONE;
// The size of co-processor 2 registers.
Mips::AFL_REG CPR2Size = Mips::AFL_REG_NONE;
// Processor-specific extension.
Mips::AFL_EXT ISAExtension = Mips::AFL_EXT_NONE;
// Mask of ASEs used.
uint32_t ASESet = 0;
bool OddSPReg = false;
bool Is32BitABI = false;
protected:
// The floating-point ABI.
FpABIKind FpABI = FpABIKind::ANY;
public:
MipsABIFlagsSection() = default;
uint16_t getVersionValue() { return (uint16_t)Version; }
uint8_t getISALevelValue() { return (uint8_t)ISALevel; }
uint8_t getISARevisionValue() { return (uint8_t)ISARevision; }
uint8_t getGPRSizeValue() { return (uint8_t)GPRSize; }
uint8_t getCPR1SizeValue();
uint8_t getCPR2SizeValue() { return (uint8_t)CPR2Size; }
uint8_t getFpABIValue();
uint32_t getISAExtensionValue() { return (uint32_t)ISAExtension; }
uint32_t getASESetValue() { return (uint32_t)ASESet; }
uint32_t getFlags1Value() {
uint32_t Value = 0;
if (OddSPReg)
Value |= (uint32_t)Mips::AFL_FLAGS1_ODDSPREG;
return Value;
}
uint32_t getFlags2Value() { return 0; }
FpABIKind getFpABI() { return FpABI; }
void setFpABI(FpABIKind Value, bool IsABI32Bit) {
FpABI = Value;
Is32BitABI = IsABI32Bit;
}
StringRef getFpABIString(FpABIKind Value);
template <class PredicateLibrary>
void setISALevelAndRevisionFromPredicates(const PredicateLibrary &P) {
if (P.hasMips64()) {
ISALevel = 64;
if (P.hasMips64r6())
ISARevision = 6;
else if (P.hasMips64r5())
ISARevision = 5;
else if (P.hasMips64r3())
ISARevision = 3;
else if (P.hasMips64r2())
ISARevision = 2;
else
ISARevision = 1;
} else if (P.hasMips32()) {
ISALevel = 32;
if (P.hasMips32r6())
ISARevision = 6;
else if (P.hasMips32r5())
ISARevision = 5;
else if (P.hasMips32r3())
ISARevision = 3;
else if (P.hasMips32r2())
ISARevision = 2;
else
ISARevision = 1;
} else {
ISARevision = 0;
if (P.hasMips5())
ISALevel = 5;
else if (P.hasMips4())
ISALevel = 4;
else if (P.hasMips3())
ISALevel = 3;
else if (P.hasMips2())
ISALevel = 2;
else if (P.hasMips1())
ISALevel = 1;
else
llvm_unreachable("Unknown ISA level!");
}
}
template <class PredicateLibrary>
void setGPRSizeFromPredicates(const PredicateLibrary &P) {
GPRSize = P.isGP64bit() ? Mips::AFL_REG_64 : Mips::AFL_REG_32;
}
template <class PredicateLibrary>
void setCPR1SizeFromPredicates(const PredicateLibrary &P) {
if (P.useSoftFloat())
CPR1Size = Mips::AFL_REG_NONE;
else if (P.hasMSA())
CPR1Size = Mips::AFL_REG_128;
else
CPR1Size = P.isFP64bit() ? Mips::AFL_REG_64 : Mips::AFL_REG_32;
}
template <class PredicateLibrary>
void setISAExtensionFromPredicates(const PredicateLibrary &P) {
if (P.hasCnMips())
ISAExtension = Mips::AFL_EXT_OCTEON;
else
ISAExtension = Mips::AFL_EXT_NONE;
}
template <class PredicateLibrary>
void setASESetFromPredicates(const PredicateLibrary &P) {
ASESet = 0;
if (P.hasDSP())
ASESet |= Mips::AFL_ASE_DSP;
if (P.hasDSPR2())
ASESet |= Mips::AFL_ASE_DSPR2;
if (P.hasMSA())
ASESet |= Mips::AFL_ASE_MSA;
if (P.inMicroMipsMode())
ASESet |= Mips::AFL_ASE_MICROMIPS;
if (P.inMips16Mode())
ASESet |= Mips::AFL_ASE_MIPS16;
if (P.hasMT())
ASESet |= Mips::AFL_ASE_MT;
if (P.hasCRC())
ASESet |= Mips::AFL_ASE_CRC;
if (P.hasVirt())
ASESet |= Mips::AFL_ASE_VIRT;
if (P.hasGINV())
ASESet |= Mips::AFL_ASE_GINV;
}
template <class PredicateLibrary>
void setFpAbiFromPredicates(const PredicateLibrary &P) {
Is32BitABI = P.isABI_O32();
FpABI = FpABIKind::ANY;
if (P.useSoftFloat())
FpABI = FpABIKind::SOFT;
else if (P.isABI_N32() || P.isABI_N64())
FpABI = FpABIKind::S64;
else if (P.isABI_O32()) {
if (P.isABI_FPXX())
FpABI = FpABIKind::XX;
else if (P.isFP64bit())
FpABI = FpABIKind::S64;
else
FpABI = FpABIKind::S32;
}
}
template <class PredicateLibrary>
void setAllFromPredicates(const PredicateLibrary &P) {
setISALevelAndRevisionFromPredicates(P);
setGPRSizeFromPredicates(P);
setCPR1SizeFromPredicates(P);
setISAExtensionFromPredicates(P);
setASESetFromPredicates(P);
setFpAbiFromPredicates(P);
OddSPReg = P.useOddSPReg();
}
};
MCStreamer &operator<<(MCStreamer &OS, MipsABIFlagsSection &ABIFlagsSection);
} // end namespace llvm
#endif // LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSABIFLAGSSECTION_H
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