Prabhuk updated this revision to Diff 557153.
Prabhuk added a comment.
Update X86 backend to use Microsoft ABI for UEFI target.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D152206/new/
https://reviews.llvm.org/D152206
Files:
clang/lib/Basic/Targets.cpp
clang/lib/Basic/Targets/OSTargets.h
clang/lib/Basic/Targets/X86.h
clang/lib/Driver/CMakeLists.txt
clang/lib/Driver/Driver.cpp
clang/lib/Driver/ToolChains/UEFI.cpp
clang/lib/Driver/ToolChains/UEFI.h
clang/test/Driver/uefi.c
llvm/lib/IR/DataLayout.cpp
llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
llvm/lib/Target/X86/X86RegisterInfo.cpp
llvm/lib/Target/X86/X86RegisterInfo.h
llvm/lib/Target/X86/X86Subtarget.h
llvm/lib/TargetParser/Triple.cpp
llvm/unittests/TargetParser/TripleTest.cpp
Index: llvm/unittests/TargetParser/TripleTest.cpp
===================================================================
--- llvm/unittests/TargetParser/TripleTest.cpp
+++ llvm/unittests/TargetParser/TripleTest.cpp
@@ -462,6 +462,7 @@
EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
EXPECT_EQ(Triple::UEFI, T.getOS());
EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
+ EXPECT_EQ(Triple::COFF, T.getObjectFormat());
T = Triple("wasm32-unknown-unknown");
EXPECT_EQ(Triple::wasm32, T.getArch());
Index: llvm/lib/TargetParser/Triple.cpp
===================================================================
--- llvm/lib/TargetParser/Triple.cpp
+++ llvm/lib/TargetParser/Triple.cpp
@@ -799,6 +799,8 @@
case Triple::x86_64:
if (T.isOSWindows())
return Triple::COFF;
+ else if (T.isUEFI())
+ return Triple::COFF;
return Triple::ELF;
case Triple::aarch64_be:
Index: llvm/lib/Target/X86/X86Subtarget.h
===================================================================
--- llvm/lib/Target/X86/X86Subtarget.h
+++ llvm/lib/Target/X86/X86Subtarget.h
@@ -332,9 +332,14 @@
bool isTargetCygMing() const { return TargetTriple.isOSCygMing(); }
+ // bool isOSWindows() const { return (TargetTriple.isOSWindows() ||
+ // TargetTriple.isUEFI()); }
+
bool isOSWindows() const { return TargetTriple.isOSWindows(); }
- bool isTargetWin64() const { return Is64Bit && isOSWindows(); }
+ bool isTargetWin64() const {
+ return Is64Bit && (isOSWindows() || TargetTriple.isUEFI());
+ }
bool isTargetWin32() const { return !Is64Bit && isOSWindows(); }
@@ -360,9 +365,11 @@
case CallingConv::X86_ThisCall:
case CallingConv::X86_VectorCall:
case CallingConv::Intel_OCL_BI:
+ llvm::outs() << "RETURNING TRUE FOR CALLING CONVENTION PRABPRAB \n";
return isTargetWin64();
// This convention allows using the Win64 convention on other targets.
case CallingConv::Win64:
+ llvm::outs() << "RETURNING TRUE FOR CALLING CONVENTION PRABPRAB \n";
return true;
// This convention allows using the SysV convention on Windows targets.
case CallingConv::X86_64_SysV:
Index: llvm/lib/Target/X86/X86RegisterInfo.h
===================================================================
--- llvm/lib/Target/X86/X86RegisterInfo.h
+++ llvm/lib/Target/X86/X86RegisterInfo.h
@@ -27,7 +27,7 @@
///
bool Is64Bit;
- /// IsWin64 - Is the target on of win64 flavours
+ /// IsWin64 - Is the target one of win64 flavours
///
bool IsWin64;
Index: llvm/lib/Target/X86/X86RegisterInfo.cpp
===================================================================
--- llvm/lib/Target/X86/X86RegisterInfo.cpp
+++ llvm/lib/Target/X86/X86RegisterInfo.cpp
@@ -54,7 +54,7 @@
// Cache some information.
Is64Bit = TT.isArch64Bit();
- IsWin64 = Is64Bit && TT.isOSWindows();
+ IsWin64 = Is64Bit && (TT.isOSWindows() || TT.isUEFI());
// Use a callee-saved register as the base pointer. These registers must
// not conflict with any ABI requirements. For example, in 32-bit mode PIC
Index: llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
===================================================================
--- llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -445,7 +445,7 @@
// Force the use of an ELF container.
MAI = new X86ELFMCAsmInfo(TheTriple);
} else if (TheTriple.isWindowsMSVCEnvironment() ||
- TheTriple.isWindowsCoreCLREnvironment()) {
+ TheTriple.isWindowsCoreCLREnvironment() || TheTriple.isUEFI()) {
if (Options.getAssemblyLanguage().equals_insensitive("masm"))
MAI = new X86MCAsmInfoMicrosoftMASM(TheTriple);
else
@@ -453,8 +453,6 @@
} else if (TheTriple.isOSCygMing() ||
TheTriple.isWindowsItaniumEnvironment()) {
MAI = new X86MCAsmInfoGNUCOFF(TheTriple);
- } else if (TheTriple.isUEFI()) {
- MAI = new X86MCAsmInfoGNUCOFF(TheTriple);
} else {
// The default is ELF.
MAI = new X86ELFMCAsmInfo(TheTriple);
Index: llvm/lib/IR/DataLayout.cpp
===================================================================
--- llvm/lib/IR/DataLayout.cpp
+++ llvm/lib/IR/DataLayout.cpp
@@ -171,7 +171,7 @@
return "-m:l";
if (T.isOSBinFormatMachO())
return "-m:o";
- if (T.isOSWindows() && T.isOSBinFormatCOFF())
+ if ((T.isOSWindows() || T.isUEFI()) && T.isOSBinFormatCOFF())
return T.getArch() == Triple::x86 ? "-m:x" : "-m:w";
if (T.isOSBinFormatXCOFF())
return "-m:a";
Index: clang/test/Driver/uefi.c
===================================================================
--- /dev/null
+++ clang/test/Driver/uefi.c
@@ -0,0 +1,10 @@
+// RUN: %clang -### %s --target=x86_64-unknown-uefi \
+// RUN: --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN: | FileCheck -check-prefixes=CHECK %s
+// RUN: %clang -### %s --target=x86_64-uefi \
+// RUN: --sysroot=%S/platform -fuse-ld=lld 2>&1 \
+// RUN: | FileCheck -check-prefixes=CHECK %s
+// CHECK: "-cc1"
+// CHECK-SAME: "-triple" "x86_64-unknown-uefi"
+// CHECK-SAME: "-mrelocation-model" "pic" "-pic-level" "2"
+// CHECK-SAME: "-mframe-pointer=all"
Index: clang/lib/Driver/ToolChains/UEFI.h
===================================================================
--- /dev/null
+++ clang/lib/Driver/ToolChains/UEFI.h
@@ -0,0 +1,62 @@
+//===--- UEFI.h - UEFI ToolChain Implementations ----------*- 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_CLANG_LIB_DRIVER_TOOLCHAINS_UEFI_H
+#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_UEFI_H
+
+#include "clang/Driver/Tool.h"
+#include "clang/Driver/ToolChain.h"
+
+namespace clang {
+namespace driver {
+namespace tools {
+namespace uefi {
+class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
+public:
+ Linker(const ToolChain &TC) : Tool("uefi::Linker", "lld-link", TC) {}
+
+ bool hasIntegratedCPP() const override { return false; }
+ bool isLinkJob() const override { return true; }
+
+ void ConstructJob(Compilation &C, const JobAction &JA,
+ const InputInfo &Output, const InputInfoList &Inputs,
+ const llvm::opt::ArgList &TCArgs,
+ const char *LinkingOutput) const override;
+};
+} // end namespace uefi
+} // end namespace tools
+
+namespace toolchains {
+
+class LLVM_LIBRARY_VISIBILITY UEFI : public ToolChain {
+public:
+ UEFI(const Driver &D, const llvm::Triple &Triple,
+ const llvm::opt::ArgList &Args);
+
+protected:
+ Tool *buildLinker() const override;
+
+public:
+ bool HasNativeLLVMSupport() const override { return true; }
+ bool IsIntegratedAssemblerDefault() const override { return true; }
+ UnwindTableLevel
+ getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override {
+ return UnwindTableLevel::Asynchronous;
+ }
+ bool isPICDefault() const override { return true; }
+ bool isPIEDefault(const llvm::opt::ArgList &Args) const override {
+ return false;
+ }
+ bool isPICDefaultForced() const override { return true; }
+};
+
+} // namespace toolchains
+} // namespace driver
+} // namespace clang
+
+#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_UEFI_H
Index: clang/lib/Driver/ToolChains/UEFI.cpp
===================================================================
--- /dev/null
+++ clang/lib/Driver/ToolChains/UEFI.cpp
@@ -0,0 +1,115 @@
+//===--- UEFI.h - UEFI ToolChain Implementations ----------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "UEFI.h"
+#include "CommonArgs.h"
+#include "Darwin.h"
+#include "clang/Basic/CharInfo.h"
+#include "clang/Basic/Version.h"
+#include "clang/Config/config.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/Options.h"
+#include "clang/Driver/SanitizerArgs.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/VirtualFileSystem.h"
+#include "llvm/TargetParser/Host.h"
+
+using namespace clang::driver;
+using namespace clang::driver::toolchains;
+using namespace clang;
+using namespace llvm::opt;
+
+UEFI::UEFI(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
+ : ToolChain(D, Triple, Args) {
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+}
+
+Tool *UEFI::buildLinker() const { return new tools::uefi::Linker(*this); }
+
+void tools::uefi::Linker::ConstructJob(Compilation &C, const JobAction &JA,
+ const InputInfo &Output,
+ const InputInfoList &Inputs,
+ const ArgList &Args,
+ const char *LinkingOutput) const {
+ ArgStringList CmdArgs;
+
+ auto &TC = static_cast<const toolchains::UEFI &>(getToolChain());
+
+ assert((Output.isFilename() || Output.isNothing()) && "invalid output");
+ if (Output.isFilename())
+ CmdArgs.push_back(
+ Args.MakeArgString(std::string("-out:") + Output.getFilename()));
+
+ CmdArgs.push_back("-nologo");
+
+ // Other UEFI binary subsystems that are currently unsupported:
+ // efi_boot_service_driver, efi_rom, efi_runtime_driver.
+ CmdArgs.push_back("-subsystem:efi_application");
+
+ // Default entry function name according to the TianaCore reference
+ // implementation is EfiMain. In the future we will add a flag to override the
+ // entry function name.
+ CmdArgs.push_back("-entry:EfiMain");
+
+ // "Terminal Service Aware" flag is not needed for UEFI applications.
+ CmdArgs.push_back("-tsaware:no");
+
+ // EFI_APPLICATION to be linked as DLL by default.
+ CmdArgs.push_back("-dll");
+
+ if (Args.hasArg(options::OPT_g_Group, options::OPT__SLASH_Z7))
+ CmdArgs.push_back("-debug");
+
+ Args.AddAllArgValues(CmdArgs, options::OPT__SLASH_link);
+
+ // Add filenames, libraries, and other linker inputs.
+ for (const auto &Input : Inputs) {
+ if (Input.isFilename()) {
+ CmdArgs.push_back(Input.getFilename());
+ continue;
+ }
+
+ const Arg &A = Input.getInputArg();
+ if (A.getOption().matches(options::OPT_l)) {
+ StringRef Lib = A.getValue();
+ const char *LinkLibArg;
+ if (Lib.endswith(".lib"))
+ LinkLibArg = Args.MakeArgString(Lib);
+ else
+ LinkLibArg = Args.MakeArgString(Lib + ".lib");
+ CmdArgs.push_back(LinkLibArg);
+ continue;
+ }
+
+ // Otherwise, this is some other kind of linker input option like -Wl, -z,
+ // or -L.
+ A.renderAsInput(Args, CmdArgs);
+ }
+
+ // This should ideally be handled by ToolChain::GetLinkerPath but we need
+ // to special case some linker paths. In the case of lld, we need to
+ // translate 'lld' into 'lld-link'.
+ StringRef Linker =
+ Args.getLastArgValue(options::OPT_fuse_ld_EQ, CLANG_DEFAULT_LINKER);
+ if (Linker.empty() || Linker.equals_insensitive("lld"))
+ Linker = "lld-link";
+
+ auto LinkerPath = TC.GetProgramPath(Linker.str().c_str());
+ auto LinkCmd = std::make_unique<Command>(
+ JA, *this, ResponseFileSupport::AtFileUTF16(),
+ Args.MakeArgString(LinkerPath), CmdArgs, Inputs, Output);
+ C.addCommand(std::move(LinkCmd));
+}
Index: clang/lib/Driver/Driver.cpp
===================================================================
--- clang/lib/Driver/Driver.cpp
+++ clang/lib/Driver/Driver.cpp
@@ -45,6 +45,7 @@
#include "ToolChains/SPIRV.h"
#include "ToolChains/Solaris.h"
#include "ToolChains/TCE.h"
+#include "ToolChains/UEFI.h"
#include "ToolChains/VEToolchain.h"
#include "ToolChains/WebAssembly.h"
#include "ToolChains/XCore.h"
@@ -6239,6 +6240,9 @@
case llvm::Triple::Mesa3D:
TC = std::make_unique<toolchains::AMDGPUToolChain>(*this, Target, Args);
break;
+ case llvm::Triple::UEFI:
+ TC = std::make_unique<toolchains::UEFI>(*this, Target, Args);
+ break;
case llvm::Triple::Win32:
switch (Target.getEnvironment()) {
default:
Index: clang/lib/Driver/CMakeLists.txt
===================================================================
--- clang/lib/Driver/CMakeLists.txt
+++ clang/lib/Driver/CMakeLists.txt
@@ -78,6 +78,7 @@
ToolChains/Solaris.cpp
ToolChains/SPIRV.cpp
ToolChains/TCE.cpp
+ ToolChains/UEFI.cpp
ToolChains/VEToolchain.cpp
ToolChains/WebAssembly.cpp
ToolChains/XCore.cpp
Index: clang/lib/Basic/Targets/X86.h
===================================================================
--- clang/lib/Basic/Targets/X86.h
+++ clang/lib/Basic/Targets/X86.h
@@ -810,6 +810,43 @@
}
};
+// x86-64 UEFI target
+class LLVM_LIBRARY_VISIBILITY UEFIX86_64TargetInfo
+ : public UEFITargetInfo<X86_64TargetInfo> {
+public:
+ UEFIX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : UEFITargetInfo<X86_64TargetInfo>(Triple, Opts) {
+ this->TheCXXABI.set(TargetCXXABI::Microsoft);
+ this->MaxTLSAlign = 8192u * this->getCharWidth();
+ this->resetDataLayout("e-m:w-p270:32:32-p271:32:32-p272:64:"
+ "64-i64:64-f80:128-n8:16:32:64-S128");
+ }
+
+ void getTargetDefines(const LangOptions &Opts,
+ MacroBuilder &Builder) const override {
+ getOSDefines(Opts, X86TargetInfo::getTriple(), Builder);
+ }
+
+ BuiltinVaListKind getBuiltinVaListKind() const override {
+ return TargetInfo::CharPtrBuiltinVaList;
+ }
+
+ CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {
+ switch (CC) {
+ case CC_C:
+ case CC_Win64:
+ return CCCR_OK;
+ default:
+ return CCCR_Warning;
+ }
+ }
+
+ TargetInfo::CallingConvKind
+ getCallingConvKind(bool ClangABICompat4) const override {
+ return CCK_MicrosoftWin64;
+ }
+};
+
// x86-64 Windows target
class LLVM_LIBRARY_VISIBILITY WindowsX86_64TargetInfo
: public WindowsTargetInfo<X86_64TargetInfo> {
Index: clang/lib/Basic/Targets/OSTargets.h
===================================================================
--- clang/lib/Basic/Targets/OSTargets.h
+++ clang/lib/Basic/Targets/OSTargets.h
@@ -760,6 +760,21 @@
}
};
+// UEFI target
+template <typename Target>
+class LLVM_LIBRARY_VISIBILITY UEFITargetInfo : public OSTargetInfo<Target> {
+protected:
+ void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+ MacroBuilder &Builder) const override {}
+
+public:
+ UEFITargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+ : OSTargetInfo<Target>(Triple, Opts) {
+ this->WCharType = TargetInfo::UnsignedShort;
+ this->WIntType = TargetInfo::UnsignedShort;
+ }
+};
+
void addWindowsDefines(const llvm::Triple &Triple, const LangOptions &Opts,
MacroBuilder &Builder);
Index: clang/lib/Basic/Targets.cpp
===================================================================
--- clang/lib/Basic/Targets.cpp
+++ clang/lib/Basic/Targets.cpp
@@ -630,6 +630,9 @@
case llvm::Triple::Solaris:
return std::make_unique<SolarisTargetInfo<X86_64TargetInfo>>(Triple,
Opts);
+ case llvm::Triple::UEFI:
+ return std::make_unique<UEFIX86_64TargetInfo>(Triple, Opts);
+
case llvm::Triple::Win32: {
switch (Triple.getEnvironment()) {
case llvm::Triple::Cygnus:
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