//===-- AMDGPUTargetStreamer.cpp - Mips Target Streamer Methods -----------===// // // 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 // //===----------------------------------------------------------------------===// // // 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/AMDGPUMetadataVerifier.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" #include "llvm/Support/TargetParser.h" namespace llvm { #include "AMDGPUPTNote.h" } using namespace llvm; using namespace llvm::AMDGPU; using namespace llvm::AMDGPU::HSAMD; //===----------------------------------------------------------------------===// // AMDGPUTargetStreamer //===----------------------------------------------------------------------===// bool AMDGPUTargetStreamer::EmitHSAMetadataV2(StringRef HSAMetadataString) { HSAMD::Metadata HSAMetadata; if (HSAMD::fromString(std::string(HSAMetadataString), HSAMetadata)) return false; return EmitHSAMetadata(HSAMetadata); } bool AMDGPUTargetStreamer::EmitHSAMetadataV3(StringRef HSAMetadataString) { msgpack::Document HSAMetadataDoc; if (!HSAMetadataDoc.fromYAML(HSAMetadataString)) return false; return EmitHSAMetadata(HSAMetadataDoc, false); } StringRef AMDGPUTargetStreamer::getArchNameFromElfMach(unsigned ElfMach) { AMDGPU::GPUKind AK; switch (ElfMach) { default: llvm_unreachable("Unhandled ELF::EF_AMDGPU type"); case ELF::EF_AMDGPU_MACH_R600_R600: AK = GK_R600; break; case ELF::EF_AMDGPU_MACH_R600_R630: AK = GK_R630; break; case ELF::EF_AMDGPU_MACH_R600_RS880: AK = GK_RS880; break; case ELF::EF_AMDGPU_MACH_R600_RV670: AK = GK_RV670; break; case ELF::EF_AMDGPU_MACH_R600_RV710: AK = GK_RV710; break; case ELF::EF_AMDGPU_MACH_R600_RV730: AK = GK_RV730; break; case ELF::EF_AMDGPU_MACH_R600_RV770: AK = GK_RV770; break; case ELF::EF_AMDGPU_MACH_R600_CEDAR: AK = GK_CEDAR; break; case ELF::EF_AMDGPU_MACH_R600_CYPRESS: AK = GK_CYPRESS; break; case ELF::EF_AMDGPU_MACH_R600_JUNIPER: AK = GK_JUNIPER; break; case ELF::EF_AMDGPU_MACH_R600_REDWOOD: AK = GK_REDWOOD; break; case ELF::EF_AMDGPU_MACH_R600_SUMO: AK = GK_SUMO; break; case ELF::EF_AMDGPU_MACH_R600_BARTS: AK = GK_BARTS; break; case ELF::EF_AMDGPU_MACH_R600_CAICOS: AK = GK_CAICOS; break; case ELF::EF_AMDGPU_MACH_R600_CAYMAN: AK = GK_CAYMAN; break; case ELF::EF_AMDGPU_MACH_R600_TURKS: AK = GK_TURKS; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX600: AK = GK_GFX600; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX601: AK = GK_GFX601; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX602: AK = GK_GFX602; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX700: AK = GK_GFX700; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX701: AK = GK_GFX701; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX702: AK = GK_GFX702; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX703: AK = GK_GFX703; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX704: AK = GK_GFX704; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX705: AK = GK_GFX705; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX801: AK = GK_GFX801; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX802: AK = GK_GFX802; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX803: AK = GK_GFX803; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX805: AK = GK_GFX805; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX810: AK = GK_GFX810; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX900: AK = GK_GFX900; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX902: AK = GK_GFX902; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX904: AK = GK_GFX904; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX906: AK = GK_GFX906; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX908: AK = GK_GFX908; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX909: AK = GK_GFX909; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX90C: AK = GK_GFX90C; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1010: AK = GK_GFX1010; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1011: AK = GK_GFX1011; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1012: AK = GK_GFX1012; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1030: AK = GK_GFX1030; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1031: AK = GK_GFX1031; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1032: AK = GK_GFX1032; break; case ELF::EF_AMDGPU_MACH_AMDGCN_GFX1033: AK = GK_GFX1033; break; case ELF::EF_AMDGPU_MACH_NONE: AK = GK_NONE; break; } StringRef GPUName = getArchNameAMDGCN(AK); if (GPUName != "") return GPUName; return getArchNameR600(AK); } unsigned AMDGPUTargetStreamer::getElfMach(StringRef GPU) { AMDGPU::GPUKind AK = parseArchAMDGCN(GPU); if (AK == AMDGPU::GPUKind::GK_NONE) AK = parseArchR600(GPU); switch (AK) { case GK_R600: return ELF::EF_AMDGPU_MACH_R600_R600; case GK_R630: return ELF::EF_AMDGPU_MACH_R600_R630; case GK_RS880: return ELF::EF_AMDGPU_MACH_R600_RS880; case GK_RV670: return ELF::EF_AMDGPU_MACH_R600_RV670; case GK_RV710: return ELF::EF_AMDGPU_MACH_R600_RV710; case GK_RV730: return ELF::EF_AMDGPU_MACH_R600_RV730; case GK_RV770: return ELF::EF_AMDGPU_MACH_R600_RV770; case GK_CEDAR: return ELF::EF_AMDGPU_MACH_R600_CEDAR; case GK_CYPRESS: return ELF::EF_AMDGPU_MACH_R600_CYPRESS; case GK_JUNIPER: return ELF::EF_AMDGPU_MACH_R600_JUNIPER; case GK_REDWOOD: return ELF::EF_AMDGPU_MACH_R600_REDWOOD; case GK_SUMO: return ELF::EF_AMDGPU_MACH_R600_SUMO; case GK_BARTS: return ELF::EF_AMDGPU_MACH_R600_BARTS; case GK_CAICOS: return ELF::EF_AMDGPU_MACH_R600_CAICOS; case GK_CAYMAN: return ELF::EF_AMDGPU_MACH_R600_CAYMAN; case GK_TURKS: return ELF::EF_AMDGPU_MACH_R600_TURKS; case GK_GFX600: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX600; case GK_GFX601: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX601; case GK_GFX602: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX602; case GK_GFX700: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX700; case GK_GFX701: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX701; case GK_GFX702: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX702; case GK_GFX703: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX703; case GK_GFX704: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX704; case GK_GFX705: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX705; case GK_GFX801: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX801; case GK_GFX802: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX802; case GK_GFX803: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX803; case GK_GFX805: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX805; case GK_GFX810: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX810; case GK_GFX900: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX900; case GK_GFX902: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX902; case GK_GFX904: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX904; case GK_GFX906: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX906; case GK_GFX908: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX908; case GK_GFX909: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX909; case GK_GFX90C: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX90C; case GK_GFX1010: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1010; case GK_GFX1011: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1011; case GK_GFX1012: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1012; case GK_GFX1030: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1030; case GK_GFX1031: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1031; case GK_GFX1032: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1032; case GK_GFX1033: return ELF::EF_AMDGPU_MACH_AMDGCN_GFX1033; case GK_NONE: return ELF::EF_AMDGPU_MACH_NONE; } llvm_unreachable("unknown GPU"); } //===----------------------------------------------------------------------===// // AMDGPUTargetAsmStreamer //===----------------------------------------------------------------------===// AMDGPUTargetAsmStreamer::AMDGPUTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS) : AMDGPUTargetStreamer(S), OS(OS) { } // A hook for emitting stuff at the end. // We use it for emitting the accumulated PAL metadata as directives. // The PAL metadata is reset after it is emitted. void AMDGPUTargetAsmStreamer::finish() { std::string S; getPALMetadata()->toString(S); OS << S; // Reset the pal metadata so its data will not affect a compilation that // reuses this object. getPALMetadata()->reset(); } void AMDGPUTargetAsmStreamer::EmitDirectiveAMDGCNTarget(StringRef Target) { OS << "\t.amdgcn_target \"" << Target << "\"\n"; } 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::emitAMDGPULDS(MCSymbol *Symbol, unsigned Size, Align Alignment) { OS << "\t.amdgpu_lds " << Symbol->getName() << ", " << Size << ", " << Alignment.value() << '\n'; } 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' << AssemblerDirectiveBegin << '\n'; OS << HSAMetadataString << '\n'; OS << '\t' << AssemblerDirectiveEnd << '\n'; return true; } bool AMDGPUTargetAsmStreamer::EmitHSAMetadata( msgpack::Document &HSAMetadataDoc, bool Strict) { V3::MetadataVerifier Verifier(Strict); if (!Verifier.verify(HSAMetadataDoc.getRoot())) return false; std::string HSAMetadataString; raw_string_ostream StrOS(HSAMetadataString); HSAMetadataDoc.toYAML(StrOS); OS << '\t' << V3::AssemblerDirectiveBegin << '\n'; OS << StrOS.str() << '\n'; OS << '\t' << V3::AssemblerDirectiveEnd << '\n'; return true; } bool AMDGPUTargetAsmStreamer::EmitCodeEnd() { const uint32_t Encoded_s_code_end = 0xbf9f0000; OS << "\t.p2alignl 6, " << Encoded_s_code_end << '\n'; OS << "\t.fill 48, 4, " << Encoded_s_code_end << '\n'; return true; } void AMDGPUTargetAsmStreamer::EmitAmdhsaKernelDescriptor( const MCSubtargetInfo &STI, StringRef KernelName, const amdhsa::kernel_descriptor_t &KD, uint64_t NextVGPR, uint64_t NextSGPR, bool ReserveVCC, bool ReserveFlatScr, bool ReserveXNACK) { IsaVersion IVersion = getIsaVersion(STI.getCPU()); OS << "\t.amdhsa_kernel " << KernelName << '\n'; #define PRINT_FIELD(STREAM, DIRECTIVE, KERNEL_DESC, MEMBER_NAME, FIELD_NAME) \ STREAM << "\t\t" << DIRECTIVE << " " \ << AMDHSA_BITS_GET(KERNEL_DESC.MEMBER_NAME, FIELD_NAME) << '\n'; OS << "\t\t.amdhsa_group_segment_fixed_size " << KD.group_segment_fixed_size << '\n'; OS << "\t\t.amdhsa_private_segment_fixed_size " << KD.private_segment_fixed_size << '\n'; PRINT_FIELD(OS, ".amdhsa_user_sgpr_private_segment_buffer", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_BUFFER); PRINT_FIELD(OS, ".amdhsa_user_sgpr_dispatch_ptr", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_PTR); PRINT_FIELD(OS, ".amdhsa_user_sgpr_queue_ptr", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_QUEUE_PTR); PRINT_FIELD(OS, ".amdhsa_user_sgpr_kernarg_segment_ptr", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_KERNARG_SEGMENT_PTR); PRINT_FIELD(OS, ".amdhsa_user_sgpr_dispatch_id", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_ID); PRINT_FIELD(OS, ".amdhsa_user_sgpr_flat_scratch_init", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_FLAT_SCRATCH_INIT); PRINT_FIELD(OS, ".amdhsa_user_sgpr_private_segment_size", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_SIZE); if (IVersion.Major >= 10) PRINT_FIELD(OS, ".amdhsa_wavefront_size32", KD, kernel_code_properties, amdhsa::KERNEL_CODE_PROPERTY_ENABLE_WAVEFRONT_SIZE32); PRINT_FIELD( OS, ".amdhsa_system_sgpr_private_segment_wavefront_offset", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_SGPR_PRIVATE_SEGMENT_WAVEFRONT_OFFSET); PRINT_FIELD(OS, ".amdhsa_system_sgpr_workgroup_id_x", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_SGPR_WORKGROUP_ID_X); PRINT_FIELD(OS, ".amdhsa_system_sgpr_workgroup_id_y", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_SGPR_WORKGROUP_ID_Y); PRINT_FIELD(OS, ".amdhsa_system_sgpr_workgroup_id_z", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_SGPR_WORKGROUP_ID_Z); PRINT_FIELD(OS, ".amdhsa_system_sgpr_workgroup_info", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_SGPR_WORKGROUP_INFO); PRINT_FIELD(OS, ".amdhsa_system_vgpr_workitem_id", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_VGPR_WORKITEM_ID); // These directives are required. OS << "\t\t.amdhsa_next_free_vgpr " << NextVGPR << '\n'; OS << "\t\t.amdhsa_next_free_sgpr " << NextSGPR << '\n'; if (!ReserveVCC) OS << "\t\t.amdhsa_reserve_vcc " << ReserveVCC << '\n'; if (IVersion.Major >= 7 && !ReserveFlatScr) OS << "\t\t.amdhsa_reserve_flat_scratch " << ReserveFlatScr << '\n'; if (IVersion.Major >= 8 && ReserveXNACK != hasXNACK(STI)) OS << "\t\t.amdhsa_reserve_xnack_mask " << ReserveXNACK << '\n'; PRINT_FIELD(OS, ".amdhsa_float_round_mode_32", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_FLOAT_ROUND_MODE_32); PRINT_FIELD(OS, ".amdhsa_float_round_mode_16_64", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_FLOAT_ROUND_MODE_16_64); PRINT_FIELD(OS, ".amdhsa_float_denorm_mode_32", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_FLOAT_DENORM_MODE_32); PRINT_FIELD(OS, ".amdhsa_float_denorm_mode_16_64", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_FLOAT_DENORM_MODE_16_64); PRINT_FIELD(OS, ".amdhsa_dx10_clamp", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_ENABLE_DX10_CLAMP); PRINT_FIELD(OS, ".amdhsa_ieee_mode", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_ENABLE_IEEE_MODE); if (IVersion.Major >= 9) PRINT_FIELD(OS, ".amdhsa_fp16_overflow", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_FP16_OVFL); if (IVersion.Major >= 10) { PRINT_FIELD(OS, ".amdhsa_workgroup_processor_mode", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_WGP_MODE); PRINT_FIELD(OS, ".amdhsa_memory_ordered", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_MEM_ORDERED); PRINT_FIELD(OS, ".amdhsa_forward_progress", KD, compute_pgm_rsrc1, amdhsa::COMPUTE_PGM_RSRC1_FWD_PROGRESS); } PRINT_FIELD( OS, ".amdhsa_exception_fp_ieee_invalid_op", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_IEEE_754_FP_INVALID_OPERATION); PRINT_FIELD(OS, ".amdhsa_exception_fp_denorm_src", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_FP_DENORMAL_SOURCE); PRINT_FIELD( OS, ".amdhsa_exception_fp_ieee_div_zero", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_IEEE_754_FP_DIVISION_BY_ZERO); PRINT_FIELD(OS, ".amdhsa_exception_fp_ieee_overflow", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_IEEE_754_FP_OVERFLOW); PRINT_FIELD(OS, ".amdhsa_exception_fp_ieee_underflow", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_IEEE_754_FP_UNDERFLOW); PRINT_FIELD(OS, ".amdhsa_exception_fp_ieee_inexact", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_IEEE_754_FP_INEXACT); PRINT_FIELD(OS, ".amdhsa_exception_int_div_zero", KD, compute_pgm_rsrc2, amdhsa::COMPUTE_PGM_RSRC2_ENABLE_EXCEPTION_INT_DIVIDE_BY_ZERO); #undef PRINT_FIELD OS << "\t.end_amdhsa_kernel\n"; } //===----------------------------------------------------------------------===// // AMDGPUTargetELFStreamer //===----------------------------------------------------------------------===// AMDGPUTargetELFStreamer::AMDGPUTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI) : AMDGPUTargetStreamer(S), Streamer(S), Os(STI.getTargetTriple().getOS()) { MCAssembler &MCA = getStreamer().getAssembler(); unsigned EFlags = MCA.getELFHeaderEFlags(); EFlags &= ~ELF::EF_AMDGPU_MACH; EFlags |= getElfMach(STI.getCPU()); EFlags &= ~ELF::EF_AMDGPU_XNACK; if (AMDGPU::hasXNACK(STI)) EFlags |= ELF::EF_AMDGPU_XNACK; EFlags &= ~ELF::EF_AMDGPU_SRAM_ECC; if (AMDGPU::hasSRAMECC(STI)) EFlags |= ELF::EF_AMDGPU_SRAM_ECC; MCA.setELFHeaderEFlags(EFlags); } MCELFStreamer &AMDGPUTargetELFStreamer::getStreamer() { return static_cast(Streamer); } // A hook for emitting stuff at the end. // We use it for emitting the accumulated PAL metadata as a .note record. // The PAL metadata is reset after it is emitted. void AMDGPUTargetELFStreamer::finish() { std::string Blob; const char *Vendor = getPALMetadata()->getVendor(); unsigned Type = getPALMetadata()->getType(); getPALMetadata()->toBlob(Type, Blob); if (Blob.empty()) return; EmitNote(Vendor, MCConstantExpr::create(Blob.size(), getContext()), Type, [&](MCELFStreamer &OS) { OS.emitBytes(Blob); }); // Reset the pal metadata so its data will not affect a compilation that // reuses this object. getPALMetadata()->reset(); } void AMDGPUTargetELFStreamer::EmitNote( StringRef Name, const MCExpr *DescSZ, unsigned NoteType, function_ref EmitDesc) { auto &S = getStreamer(); auto &Context = S.getContext(); auto NameSZ = Name.size() + 1; unsigned NoteFlags = 0; // TODO Apparently, this is currently needed for OpenCL as mentioned in // https://reviews.llvm.org/D74995 if (Os == Triple::AMDHSA) NoteFlags = ELF::SHF_ALLOC; S.PushSection(); S.SwitchSection( Context.getELFSection(ElfNote::SectionName, ELF::SHT_NOTE, NoteFlags)); S.emitInt32(NameSZ); // namesz S.emitValue(DescSZ, 4); // descz S.emitInt32(NoteType); // type S.emitBytes(Name); // name S.emitValueToAlignment(4, 0, 1, 0); // padding 0 EmitDesc(S); // desc S.emitValueToAlignment(4, 0, 1, 0); // padding 0 S.PopSection(); } void AMDGPUTargetELFStreamer::EmitDirectiveAMDGCNTarget(StringRef Target) {} void AMDGPUTargetELFStreamer::EmitDirectiveHSACodeObjectVersion( uint32_t Major, uint32_t Minor) { EmitNote(ElfNote::NoteNameV2, MCConstantExpr::create(8, getContext()), ElfNote::NT_AMDGPU_HSA_CODE_OBJECT_VERSION, [&](MCELFStreamer &OS) { OS.emitInt32(Major); OS.emitInt32(Minor); }); } 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; EmitNote(ElfNote::NoteNameV2, MCConstantExpr::create(DescSZ, getContext()), ElfNote::NT_AMDGPU_HSA_ISA, [&](MCELFStreamer &OS) { OS.emitInt16(VendorNameSize); OS.emitInt16(ArchNameSize); OS.emitInt32(Major); OS.emitInt32(Minor); OS.emitInt32(Stepping); OS.emitBytes(VendorName); OS.emitInt8(0); // NULL terminate VendorName OS.emitBytes(ArchName); OS.emitInt8(0); // 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( getStreamer().getContext().getOrCreateSymbol(SymbolName)); Symbol->setType(Type); } void AMDGPUTargetELFStreamer::emitAMDGPULDS(MCSymbol *Symbol, unsigned Size, Align Alignment) { MCSymbolELF *SymbolELF = cast(Symbol); SymbolELF->setType(ELF::STT_OBJECT); if (!SymbolELF->isBindingSet()) { SymbolELF->setBinding(ELF::STB_GLOBAL); SymbolELF->setExternal(true); } if (SymbolELF->declareCommon(Size, Alignment.value(), true)) { report_fatal_error("Symbol: " + Symbol->getName() + " redeclared as different type"); } SymbolELF->setIndex(ELF::SHN_AMDGPU_LDS); SymbolELF->setSize(MCConstantExpr::create(Size, getContext())); } 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); EmitNote(ElfNote::NoteNameV2, DescSZ, ELF::NT_AMD_AMDGPU_ISA, [&](MCELFStreamer &OS) { OS.emitLabel(DescBegin); OS.emitBytes(IsaVersionString); OS.emitLabel(DescEnd); }); return true; } bool AMDGPUTargetELFStreamer::EmitHSAMetadata(msgpack::Document &HSAMetadataDoc, bool Strict) { V3::MetadataVerifier Verifier(Strict); if (!Verifier.verify(HSAMetadataDoc.getRoot())) return false; std::string HSAMetadataString; HSAMetadataDoc.writeToBlob(HSAMetadataString); // 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); EmitNote(ElfNote::NoteNameV3, DescSZ, ELF::NT_AMDGPU_METADATA, [&](MCELFStreamer &OS) { OS.emitLabel(DescBegin); OS.emitBytes(HSAMetadataString); 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); EmitNote(ElfNote::NoteNameV2, DescSZ, ELF::NT_AMD_AMDGPU_HSA_METADATA, [&](MCELFStreamer &OS) { OS.emitLabel(DescBegin); OS.emitBytes(HSAMetadataString); OS.emitLabel(DescEnd); }); return true; } bool AMDGPUTargetELFStreamer::EmitCodeEnd() { const uint32_t Encoded_s_code_end = 0xbf9f0000; MCStreamer &OS = getStreamer(); OS.PushSection(); OS.emitValueToAlignment(64, Encoded_s_code_end, 4); for (unsigned I = 0; I < 48; ++I) OS.emitInt32(Encoded_s_code_end); OS.PopSection(); return true; } void AMDGPUTargetELFStreamer::EmitAmdhsaKernelDescriptor( const MCSubtargetInfo &STI, StringRef KernelName, const amdhsa::kernel_descriptor_t &KernelDescriptor, uint64_t NextVGPR, uint64_t NextSGPR, bool ReserveVCC, bool ReserveFlatScr, bool ReserveXNACK) { auto &Streamer = getStreamer(); auto &Context = Streamer.getContext(); MCSymbolELF *KernelCodeSymbol = cast( Context.getOrCreateSymbol(Twine(KernelName))); MCSymbolELF *KernelDescriptorSymbol = cast( Context.getOrCreateSymbol(Twine(KernelName) + Twine(".kd"))); // Copy kernel descriptor symbol's binding, other and visibility from the // kernel code symbol. KernelDescriptorSymbol->setBinding(KernelCodeSymbol->getBinding()); KernelDescriptorSymbol->setOther(KernelCodeSymbol->getOther()); KernelDescriptorSymbol->setVisibility(KernelCodeSymbol->getVisibility()); // Kernel descriptor symbol's type and size are fixed. KernelDescriptorSymbol->setType(ELF::STT_OBJECT); KernelDescriptorSymbol->setSize( MCConstantExpr::create(sizeof(KernelDescriptor), Context)); // The visibility of the kernel code symbol must be protected or less to allow // static relocations from the kernel descriptor to be used. if (KernelCodeSymbol->getVisibility() == ELF::STV_DEFAULT) KernelCodeSymbol->setVisibility(ELF::STV_PROTECTED); Streamer.emitLabel(KernelDescriptorSymbol); Streamer.emitInt32(KernelDescriptor.group_segment_fixed_size); Streamer.emitInt32(KernelDescriptor.private_segment_fixed_size); for (uint8_t Res : KernelDescriptor.reserved0) Streamer.emitInt8(Res); // 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)); for (uint8_t Res : KernelDescriptor.reserved1) Streamer.emitInt8(Res); Streamer.emitInt32(KernelDescriptor.compute_pgm_rsrc3); Streamer.emitInt32(KernelDescriptor.compute_pgm_rsrc1); Streamer.emitInt32(KernelDescriptor.compute_pgm_rsrc2); Streamer.emitInt16(KernelDescriptor.kernel_code_properties); for (uint8_t Res : KernelDescriptor.reserved2) Streamer.emitInt8(Res); }