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llvm-project/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUTargetStreamer.cpp

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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 "AMDGPUTargetStreamer.h"
#include "AMDGPU.h"
#include "SIDefines.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "Utils/AMDKernelCodeTUtils.h"
#include "llvm/ADT/Twine.h"
#include "llvm/BinaryFormat/ELF.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/FormattedStream.h"
namespace llvm {
#include "AMDGPUPTNote.h"
}
using namespace llvm;
using namespace llvm::AMDGPU;
//===----------------------------------------------------------------------===//
// AMDGPUTargetStreamer
//===----------------------------------------------------------------------===//
static const struct {
const char *Name;
unsigned Mach;
} MachTable[] = {
// Radeon HD 2000/3000 Series (R600).
{ "r600", ELF::EF_AMDGPU_MACH_R600_R600 },
{ "r630", ELF::EF_AMDGPU_MACH_R600_R630 },
{ "rs880", ELF::EF_AMDGPU_MACH_R600_RS880 },
{ "rv670", ELF::EF_AMDGPU_MACH_R600_RV670 },
// Radeon HD 4000 Series (R700).
{ "rv710", ELF::EF_AMDGPU_MACH_R600_RV710 },
{ "rv730", ELF::EF_AMDGPU_MACH_R600_RV730 },
{ "rv770", ELF::EF_AMDGPU_MACH_R600_RV770 },
// Radeon HD 5000 Series (Evergreen).
{ "cedar", ELF::EF_AMDGPU_MACH_R600_CEDAR },
{ "cypress", ELF::EF_AMDGPU_MACH_R600_CYPRESS },
{ "juniper", ELF::EF_AMDGPU_MACH_R600_JUNIPER },
{ "redwood", ELF::EF_AMDGPU_MACH_R600_REDWOOD },
{ "sumo", ELF::EF_AMDGPU_MACH_R600_SUMO },
// Radeon HD 6000 Series (Northern Islands).
{ "barts", ELF::EF_AMDGPU_MACH_R600_BARTS },
{ "caicos", ELF::EF_AMDGPU_MACH_R600_CAICOS },
{ "cayman", ELF::EF_AMDGPU_MACH_R600_CAYMAN },
{ "turks", ELF::EF_AMDGPU_MACH_R600_TURKS },
// AMDGCN GFX6.
{ "gfx600", ELF::EF_AMDGPU_MACH_AMDGCN_GFX600 },
{ "tahiti", ELF::EF_AMDGPU_MACH_AMDGCN_GFX600 },
{ "gfx601", ELF::EF_AMDGPU_MACH_AMDGCN_GFX601 },
{ "hainan", ELF::EF_AMDGPU_MACH_AMDGCN_GFX601 },
{ "oland", ELF::EF_AMDGPU_MACH_AMDGCN_GFX601 },
{ "pitcairn", ELF::EF_AMDGPU_MACH_AMDGCN_GFX601 },
{ "verde", ELF::EF_AMDGPU_MACH_AMDGCN_GFX601 },
// AMDGCN GFX7.
{ "gfx700", ELF::EF_AMDGPU_MACH_AMDGCN_GFX700 },
{ "kaveri", ELF::EF_AMDGPU_MACH_AMDGCN_GFX700 },
{ "gfx701", ELF::EF_AMDGPU_MACH_AMDGCN_GFX701 },
{ "hawaii", ELF::EF_AMDGPU_MACH_AMDGCN_GFX701 },
{ "gfx702", ELF::EF_AMDGPU_MACH_AMDGCN_GFX702 },
{ "gfx703", ELF::EF_AMDGPU_MACH_AMDGCN_GFX703 },
{ "kabini", ELF::EF_AMDGPU_MACH_AMDGCN_GFX703 },
{ "mullins", ELF::EF_AMDGPU_MACH_AMDGCN_GFX703 },
{ "gfx704", ELF::EF_AMDGPU_MACH_AMDGCN_GFX704 },
{ "bonaire", ELF::EF_AMDGPU_MACH_AMDGCN_GFX704 },
// AMDGCN GFX8.
{ "gfx801", ELF::EF_AMDGPU_MACH_AMDGCN_GFX801 },
{ "carrizo", ELF::EF_AMDGPU_MACH_AMDGCN_GFX801 },
{ "gfx802", ELF::EF_AMDGPU_MACH_AMDGCN_GFX802 },
{ "iceland", ELF::EF_AMDGPU_MACH_AMDGCN_GFX802 },
{ "tonga", ELF::EF_AMDGPU_MACH_AMDGCN_GFX802 },
{ "gfx803", ELF::EF_AMDGPU_MACH_AMDGCN_GFX803 },
{ "fiji", ELF::EF_AMDGPU_MACH_AMDGCN_GFX803 },
{ "polaris10", ELF::EF_AMDGPU_MACH_AMDGCN_GFX803 },
{ "polaris11", ELF::EF_AMDGPU_MACH_AMDGCN_GFX803 },
{ "gfx810", ELF::EF_AMDGPU_MACH_AMDGCN_GFX810 },
{ "stoney", ELF::EF_AMDGPU_MACH_AMDGCN_GFX810 },
// AMDGCN GFX9.
{ "gfx900", ELF::EF_AMDGPU_MACH_AMDGCN_GFX900 },
{ "gfx902", ELF::EF_AMDGPU_MACH_AMDGCN_GFX902 },
{ "gfx904", ELF::EF_AMDGPU_MACH_AMDGCN_GFX904 },
{ "gfx906", ELF::EF_AMDGPU_MACH_AMDGCN_GFX906 },
// Not specified processor.
{ nullptr, ELF::EF_AMDGPU_MACH_NONE }
};
unsigned AMDGPUTargetStreamer::getMACH(StringRef GPU) const {
auto Entry = MachTable;
for (; Entry->Name && GPU != Entry->Name; ++Entry)
;
return Entry->Mach;
}
const char *AMDGPUTargetStreamer::getMachName(unsigned Mach) {
auto Entry = MachTable;
for (; Entry->Name && Mach != Entry->Mach; ++Entry)
;
return Entry->Name;
}
bool AMDGPUTargetStreamer::EmitHSAMetadata(StringRef HSAMetadataString) {
HSAMD::Metadata HSAMetadata;
if (HSAMD::fromString(HSAMetadataString, HSAMetadata))
return false;
return EmitHSAMetadata(HSAMetadata);
}
//===----------------------------------------------------------------------===//
// 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;
}
}
bool AMDGPUTargetAsmStreamer::EmitISAVersion(StringRef IsaVersionString) {
OS << "\t.amd_amdgpu_isa \"" << IsaVersionString << "\"\n";
return true;
}
bool AMDGPUTargetAsmStreamer::EmitHSAMetadata(
const AMDGPU::HSAMD::Metadata &HSAMetadata) {
std::string HSAMetadataString;
if (HSAMD::toString(HSAMetadata, HSAMetadataString))
return false;
OS << '\t' << HSAMD::AssemblerDirectiveBegin << '\n';
OS << HSAMetadataString << '\n';
OS << '\t' << HSAMD::AssemblerDirectiveEnd << '\n';
return true;
}
bool AMDGPUTargetAsmStreamer::EmitPALMetadata(
const PALMD::Metadata &PALMetadata) {
std::string PALMetadataString;
if (PALMD::toString(PALMetadata, PALMetadataString))
return false;
OS << '\t' << PALMD::AssemblerDirective << PALMetadataString << '\n';
return true;
}
void AMDGPUTargetAsmStreamer::EmitAmdhsaKernelDescriptor(
StringRef KernelName,
const amdhsa::kernel_descriptor_t &KernelDescriptor) {
// FIXME: not supported yet.
}
//===----------------------------------------------------------------------===//
// AMDGPUTargetELFStreamer
//===----------------------------------------------------------------------===//
AMDGPUTargetELFStreamer::AMDGPUTargetELFStreamer(
MCStreamer &S, const MCSubtargetInfo &STI)
: AMDGPUTargetStreamer(S), Streamer(S) {
MCAssembler &MCA = getStreamer().getAssembler();
unsigned EFlags = MCA.getELFHeaderEFlags();
EFlags &= ~ELF::EF_AMDGPU_MACH;
EFlags |= getMACH(STI.getCPU());
EFlags &= ~ELF::EF_AMDGPU_XNACK;
if (AMDGPU::hasXNACK(STI))
EFlags |= ELF::EF_AMDGPU_XNACK;
MCA.setELFHeaderEFlags(EFlags);
}
MCELFStreamer &AMDGPUTargetELFStreamer::getStreamer() {
return static_cast<MCELFStreamer &>(Streamer);
}
void AMDGPUTargetELFStreamer::EmitAMDGPUNote(
const MCExpr *DescSZ, unsigned NoteType,
function_ref<void(MCELFStreamer &)> EmitDesc) {
auto &S = getStreamer();
auto &Context = S.getContext();
auto NameSZ = sizeof(ElfNote::NoteName);
S.PushSection();
S.SwitchSection(Context.getELFSection(
ElfNote::SectionName, ELF::SHT_NOTE, ELF::SHF_ALLOC));
S.EmitIntValue(NameSZ, 4); // namesz
S.EmitValue(DescSZ, 4); // descz
S.EmitIntValue(NoteType, 4); // type
S.EmitBytes(StringRef(ElfNote::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()),
ElfNote::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()),
ElfNote::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(Type);
}
bool AMDGPUTargetELFStreamer::EmitISAVersion(StringRef IsaVersionString) {
// 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,
ELF::NT_AMD_AMDGPU_ISA,
[&](MCELFStreamer &OS) {
OS.EmitLabel(DescBegin);
OS.EmitBytes(IsaVersionString);
OS.EmitLabel(DescEnd);
}
);
return true;
}
bool AMDGPUTargetELFStreamer::EmitHSAMetadata(
const AMDGPU::HSAMD::Metadata &HSAMetadata) {
std::string HSAMetadataString;
if (HSAMD::toString(HSAMetadata, HSAMetadataString))
return false;
// 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,
ELF::NT_AMD_AMDGPU_HSA_METADATA,
[&](MCELFStreamer &OS) {
OS.EmitLabel(DescBegin);
OS.EmitBytes(HSAMetadataString);
OS.EmitLabel(DescEnd);
}
);
return true;
}
bool AMDGPUTargetELFStreamer::EmitPALMetadata(
const PALMD::Metadata &PALMetadata) {
EmitAMDGPUNote(
MCConstantExpr::create(PALMetadata.size() * sizeof(uint32_t), getContext()),
ELF::NT_AMD_AMDGPU_PAL_METADATA,
[&](MCELFStreamer &OS){
for (auto I : PALMetadata)
OS.EmitIntValue(I, sizeof(uint32_t));
}
);
return true;
}
void AMDGPUTargetELFStreamer::EmitAmdhsaKernelDescriptor(
StringRef KernelName,
const amdhsa::kernel_descriptor_t &KernelDescriptor) {
auto &Streamer = getStreamer();
auto &Context = Streamer.getContext();
MCSymbolELF *KernelDescriptorSymbol = cast<MCSymbolELF>(
Context.getOrCreateSymbol(Twine(KernelName) + Twine(".kd")));
KernelDescriptorSymbol->setBinding(ELF::STB_GLOBAL);
KernelDescriptorSymbol->setType(ELF::STT_OBJECT);
KernelDescriptorSymbol->setSize(
MCConstantExpr::create(sizeof(KernelDescriptor), Context));
MCSymbolELF *KernelCodeSymbol = cast<MCSymbolELF>(
Context.getOrCreateSymbol(Twine(KernelName)));
KernelCodeSymbol->setBinding(ELF::STB_LOCAL);
Streamer.EmitLabel(KernelDescriptorSymbol);
Streamer.EmitBytes(StringRef(
(const char*)&(KernelDescriptor),
offsetof(amdhsa::kernel_descriptor_t, kernel_code_entry_byte_offset)));
// FIXME: Remove the use of VK_AMDGPU_REL64 in the expression below. The
// expression being created is:
// (start of kernel code) - (start of kernel descriptor)
// It implies R_AMDGPU_REL64, but ends up being R_AMDGPU_ABS64.
Streamer.EmitValue(MCBinaryExpr::createSub(
MCSymbolRefExpr::create(
KernelCodeSymbol, MCSymbolRefExpr::VK_AMDGPU_REL64, Context),
MCSymbolRefExpr::create(
KernelDescriptorSymbol, MCSymbolRefExpr::VK_None, Context),
Context),
sizeof(KernelDescriptor.kernel_code_entry_byte_offset));
Streamer.EmitBytes(StringRef(
(const char*)&(KernelDescriptor) +
offsetof(amdhsa::kernel_descriptor_t, kernel_code_entry_byte_offset) +
sizeof(KernelDescriptor.kernel_code_entry_byte_offset),
sizeof(KernelDescriptor) -
offsetof(amdhsa::kernel_descriptor_t, kernel_code_entry_byte_offset) -
sizeof(KernelDescriptor.kernel_code_entry_byte_offset)));
}
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