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97 lines
3.0 KiB
97 lines
3.0 KiB
// +build byollvm
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#include <clang/Basic/DiagnosticOptions.h>
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#include <clang/CodeGen/CodeGenAction.h>
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#include <clang/Driver/Compilation.h>
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#include <clang/Driver/Driver.h>
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#include <clang/Frontend/CompilerInstance.h>
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#include <clang/Frontend/CompilerInvocation.h>
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#include <clang/Frontend/FrontendDiagnostic.h>
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#include <clang/Frontend/TextDiagnosticPrinter.h>
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#include <clang/FrontendTool/Utils.h>
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#include <llvm/ADT/IntrusiveRefCntPtr.h>
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#include <llvm/Option/Option.h>
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using namespace llvm;
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using namespace clang;
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#include "cc1as.h"
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// This file provides C wrappers for the builtin tools cc1 and cc1as
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// provided by Clang, and calls them as the driver would call them.
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extern "C" {
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bool tinygo_clang_driver(int argc, char **argv) {
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std::vector<const char*> args(argv, argv + argc);
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// The compiler invocation needs a DiagnosticsEngine so it can report problems
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llvm::IntrusiveRefCntPtr<clang::DiagnosticOptions> DiagOpts = new clang::DiagnosticOptions();
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clang::TextDiagnosticPrinter DiagnosticPrinter(llvm::errs(), &*DiagOpts);
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clang::DiagnosticsEngine Diags(llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs>(new clang::DiagnosticIDs()), &*DiagOpts, &DiagnosticPrinter, false);
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// Create the clang driver
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clang::driver::Driver TheDriver(args[0], llvm::sys::getDefaultTargetTriple(), Diags);
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// Create the set of actions to perform
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std::unique_ptr<clang::driver::Compilation> C(TheDriver.BuildCompilation(args));
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if (!C) {
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return false;
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}
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const clang::driver::JobList &Jobs = C->getJobs();
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// There may be more than one job, for example for .S files
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// (preprocessor + assembler).
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for (auto Cmd : Jobs) {
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// Select the tool: cc1 or cc1as.
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const llvm::opt::ArgStringList &CCArgs = Cmd.getArguments();
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if (strcmp(*CCArgs.data(), "-cc1") == 0) {
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// This is the C frontend.
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// Initialize a compiler invocation object from the clang (-cc1) arguments.
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std::unique_ptr<clang::CompilerInstance> Clang(new clang::CompilerInstance());
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bool success = clang::CompilerInvocation::CreateFromArgs(
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Clang->getInvocation(),
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CCArgs,
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Diags);
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if (!success) {
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return false;
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}
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// Create the actual diagnostics engine.
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Clang->createDiagnostics();
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if (!Clang->hasDiagnostics()) {
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return false;
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}
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// Execute the frontend actions.
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success = ExecuteCompilerInvocation(Clang.get());
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if (!success) {
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return false;
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}
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} else if (strcmp(*CCArgs.data(), "-cc1as") == 0) {
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// This is the assembler frontend. Parse the arguments.
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AssemblerInvocation Asm;
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ArrayRef<const char *> Argv = llvm::ArrayRef<const char*>(CCArgs);
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if (!AssemblerInvocation::CreateFromArgs(Asm, Argv.slice(1), Diags))
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return false;
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// Execute the invocation, unless there were parsing errors.
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bool failed = Diags.hasErrorOccurred() || ExecuteAssembler(Asm, Diags);
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if (failed) {
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return false;
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}
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} else {
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// Unknown tool, print the tool and exit.
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fprintf(stderr, "unknown tool: %s\n", *CCArgs.data());
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return false;
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}
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}
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// Commands executed successfully.
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return true;
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}
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} // extern "C"
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