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//===-- AMDGPUTargetStreamer.cpp - Mips Target Streamer Methods -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides AMDGPU specific target streamer methods.
//
//===----------------------------------------------------------------------===//
#include "AMDGPU.h"
#include "AMDGPUTargetStreamer.h"
#include "SIDefines.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "Utils/AMDKernelCodeTUtils.h"
#include "llvm/ADT/Twine.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELFStreamer.h"
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/FormattedStream.h"
#include "AMDGPURuntimeMD.h"
namespace llvm {
#include "AMDGPUPTNote.h"
}
using namespace llvm;
using namespace llvm::AMDGPU;
AMDGPUTargetStreamer::AMDGPUTargetStreamer(MCStreamer &S)
: MCTargetStreamer(S) {}
//===----------------------------------------------------------------------===//
// AMDGPUTargetAsmStreamer
//===----------------------------------------------------------------------===//
AMDGPUTargetAsmStreamer::AMDGPUTargetAsmStreamer(MCStreamer &S,
formatted_raw_ostream &OS)
: AMDGPUTargetStreamer(S), OS(OS) { }
void
AMDGPUTargetAsmStreamer::EmitDirectiveHSACodeObjectVersion(uint32_t Major,
uint32_t Minor) {
OS << "\t.hsa_code_object_version " <<
Twine(Major) << "," << Twine(Minor) << '\n';
}
void
AMDGPUTargetAsmStreamer::EmitDirectiveHSACodeObjectISA(uint32_t Major,
uint32_t Minor,
uint32_t Stepping,
StringRef VendorName,
StringRef ArchName) {
OS << "\t.hsa_code_object_isa " <<
Twine(Major) << "," << Twine(Minor) << "," << Twine(Stepping) <<
",\"" << VendorName << "\",\"" << ArchName << "\"\n";
}
void
AMDGPUTargetAsmStreamer::EmitAMDKernelCodeT(const amd_kernel_code_t &Header) {
OS << "\t.amd_kernel_code_t\n";
dumpAmdKernelCode(&Header, OS, "\t\t");
OS << "\t.end_amd_kernel_code_t\n";
}
void AMDGPUTargetAsmStreamer::EmitAMDGPUSymbolType(StringRef SymbolName,
unsigned Type) {
switch (Type) {
default: llvm_unreachable("Invalid AMDGPU symbol type");
case ELF::STT_AMDGPU_HSA_KERNEL:
OS << "\t.amdgpu_hsa_kernel " << SymbolName << '\n' ;
break;
}
}
void AMDGPUTargetAsmStreamer::EmitAMDGPUHsaModuleScopeGlobal(
StringRef GlobalName) {
OS << "\t.amdgpu_hsa_module_global " << GlobalName << '\n';
}
void AMDGPUTargetAsmStreamer::EmitAMDGPUHsaProgramScopeGlobal(
StringRef GlobalName) {
OS << "\t.amdgpu_hsa_program_global " << GlobalName << '\n';
}
void AMDGPUTargetAsmStreamer::EmitRuntimeMetadata(Module &M) {
OS << "\t.amdgpu_runtime_metadata\n";
OS << getRuntimeMDYAMLString(M);
OS << "\n\t.end_amdgpu_runtime_metadata\n";
}
void AMDGPUTargetAsmStreamer::EmitRuntimeMetadata(StringRef Metadata) {
OS << "\t.amdgpu_runtime_metadata";
OS << Metadata;
OS << "\t.end_amdgpu_runtime_metadata\n";
}
//===----------------------------------------------------------------------===//
// AMDGPUTargetELFStreamer
//===----------------------------------------------------------------------===//
AMDGPUTargetELFStreamer::AMDGPUTargetELFStreamer(MCStreamer &S)
: AMDGPUTargetStreamer(S), Streamer(S) {}
MCELFStreamer &AMDGPUTargetELFStreamer::getStreamer() {
return static_cast<MCELFStreamer &>(Streamer);
}
void
AMDGPUTargetELFStreamer::EmitAMDGPUNote(const MCExpr* DescSZ,
PT_NOTE::NoteType Type,
std::function<void(MCELFStreamer &)> EmitDesc) {
auto &S = getStreamer();
auto &Context = S.getContext();
auto NameSZ = sizeof(PT_NOTE::NoteName);
S.PushSection();
S.SwitchSection(Context.getELFSection(
PT_NOTE::SectionName, ELF::SHT_NOTE, ELF::SHF_ALLOC));
S.EmitIntValue(NameSZ, 4); // namesz
S.EmitValue(DescSZ, 4); // descz
S.EmitIntValue(Type, 4); // type
S.EmitBytes(StringRef(PT_NOTE::NoteName, NameSZ)); // name
S.EmitValueToAlignment(4, 0, 1, 0); // padding 0
EmitDesc(S); // desc
S.EmitValueToAlignment(4, 0, 1, 0); // padding 0
S.PopSection();
}
void
AMDGPUTargetELFStreamer::EmitDirectiveHSACodeObjectVersion(uint32_t Major,
uint32_t Minor) {
EmitAMDGPUNote(
MCConstantExpr::create(8, getContext()),
PT_NOTE::NT_AMDGPU_HSA_CODE_OBJECT_VERSION,
[&](MCELFStreamer &OS){
OS.EmitIntValue(Major, 4);
OS.EmitIntValue(Minor, 4);
}
);
}
void
AMDGPUTargetELFStreamer::EmitDirectiveHSACodeObjectISA(uint32_t Major,
uint32_t Minor,
uint32_t Stepping,
StringRef VendorName,
StringRef ArchName) {
uint16_t VendorNameSize = VendorName.size() + 1;
uint16_t ArchNameSize = ArchName.size() + 1;
unsigned DescSZ = sizeof(VendorNameSize) + sizeof(ArchNameSize) +
sizeof(Major) + sizeof(Minor) + sizeof(Stepping) +
VendorNameSize + ArchNameSize;
EmitAMDGPUNote(
MCConstantExpr::create(DescSZ, getContext()),
PT_NOTE::NT_AMDGPU_HSA_ISA,
[&](MCELFStreamer &OS) {
OS.EmitIntValue(VendorNameSize, 2);
OS.EmitIntValue(ArchNameSize, 2);
OS.EmitIntValue(Major, 4);
OS.EmitIntValue(Minor, 4);
OS.EmitIntValue(Stepping, 4);
OS.EmitBytes(VendorName);
OS.EmitIntValue(0, 1); // NULL terminate VendorName
OS.EmitBytes(ArchName);
OS.EmitIntValue(0, 1); // NULL terminte ArchName
}
);
}
void
AMDGPUTargetELFStreamer::EmitAMDKernelCodeT(const amd_kernel_code_t &Header) {
MCStreamer &OS = getStreamer();
OS.PushSection();
OS.EmitBytes(StringRef((const char*)&Header, sizeof(Header)));
OS.PopSection();
}
void AMDGPUTargetELFStreamer::EmitAMDGPUSymbolType(StringRef SymbolName,
unsigned Type) {
MCSymbolELF *Symbol = cast<MCSymbolELF>(
getStreamer().getContext().getOrCreateSymbol(SymbolName));
Symbol->setType(ELF::STT_AMDGPU_HSA_KERNEL);
}
void AMDGPUTargetELFStreamer::EmitAMDGPUHsaModuleScopeGlobal(
StringRef GlobalName) {
MCSymbolELF *Symbol = cast<MCSymbolELF>(
getStreamer().getContext().getOrCreateSymbol(GlobalName));
Symbol->setType(ELF::STT_OBJECT);
Symbol->setBinding(ELF::STB_LOCAL);
}
void AMDGPUTargetELFStreamer::EmitAMDGPUHsaProgramScopeGlobal(
StringRef GlobalName) {
MCSymbolELF *Symbol = cast<MCSymbolELF>(
getStreamer().getContext().getOrCreateSymbol(GlobalName));
Symbol->setType(ELF::STT_OBJECT);
Symbol->setBinding(ELF::STB_GLOBAL);
}
void AMDGPUTargetELFStreamer::EmitRuntimeMetadata(StringRef Metadata) {
// Create two labels to mark the beginning and end of the desc field
// and a MCExpr to calculate the size of the desc field.
auto &Context = getContext();
auto *DescBegin = Context.createTempSymbol();
auto *DescEnd = Context.createTempSymbol();
auto *DescSZ = MCBinaryExpr::createSub(
MCSymbolRefExpr::create(DescEnd, Context),
MCSymbolRefExpr::create(DescBegin, Context), Context);
EmitAMDGPUNote(
DescSZ,
PT_NOTE::NT_AMDGPU_HSA_RUNTIME_METADATA,
[&](MCELFStreamer &OS) {
OS.EmitLabel(DescBegin);
OS.EmitBytes(Metadata);
OS.EmitLabel(DescEnd);
}
);
}
void AMDGPUTargetELFStreamer::EmitRuntimeMetadata(Module &M) {
EmitRuntimeMetadata(getRuntimeMDYAMLString(M));
}
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