15b65bcd65
With the initial support added, clang can compile `helloworld` C
to executable file for loongarch64. For example:
```
$ cat hello.c
int main() {
printf("Hello, world!\n");
return 0;
}
$ clang --target=loongarch64-unknown-linux-gnu --gcc-toolchain=xxx --sysroot=xxx hello.c
```
The output a.out can run within qemu or native machine. For example:
```
$ file ./a.out
./a.out: ELF 64-bit LSB pie executable, LoongArch, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-loongarch-lp64d.so.1, for GNU/Linux 5.19.0, with debug_info, not stripped
$ ./a.out
Hello, world!
```
Currently gcc toolchain and sysroot can be found here:
https://github.com/loongson/build-tools/releases/download/2022.08.11/loongarch64-clfs-5.1-cross-tools-gcc-glibc.tar.xz
Reference: https://github.com/loongson/LoongArch-Documentation
The last commit hash (main branch) is:
99016636af64d02dee05e39974d4c1e55875c45b
Note loongarch32 is not fully tested because there is no reference
gcc toolchain yet.
Differential Revision: https://reviews.llvm.org/D130255
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
//===--- LoongArch.cpp - Implement LoongArch target feature support -------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements LoongArch TargetInfo objects.
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//
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//===----------------------------------------------------------------------===//
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#include "LoongArch.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/TargetBuiltins.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/Support/TargetParser.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace clang;
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using namespace clang::targets;
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ArrayRef<const char *> LoongArchTargetInfo::getGCCRegNames() const {
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// TODO: To be implemented in future.
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return {};
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}
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ArrayRef<TargetInfo::GCCRegAlias>
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LoongArchTargetInfo::getGCCRegAliases() const {
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// TODO: To be implemented in future.
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return {};
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}
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bool LoongArchTargetInfo::validateAsmConstraint(
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const char *&Name, TargetInfo::ConstraintInfo &Info) const {
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// TODO: To be implemented in future.
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return false;
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}
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void LoongArchTargetInfo::getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const {
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Builder.defineMacro("__loongarch__");
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// TODO: Define more macros.
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}
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ArrayRef<Builtin::Info> LoongArchTargetInfo::getTargetBuiltins() const {
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// TODO: To be implemented in future.
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return {};
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}
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