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add support for target machine

This commit is contained in:
Luna 2019-09-21 23:56:22 -03:00
parent 86e899e771
commit a1bf15fe4d
2 changed files with 59 additions and 17 deletions
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62
src/codegen.zig
View File

@ -2,6 +2,11 @@ const std = @import("std");
const ast = @import("ast.zig");
const llvm = @import("llvm.zig");
fn sliceify(non_slice: ?[*]const u8) []const u8 {
if (non_slice == null) return "";
return non_slice.?[0..std.mem.len(u8, non_slice.?)];
}
pub const Codegen = struct {
allocator: *std.mem.Allocator,
@ -62,9 +67,8 @@ pub const Codegen = struct {
}
pub fn gen(self: *Codegen, root: *ast.Node) !void {
//std.debug.warn("cgen: init native target\n");
//_ = llvm.LLVMInitializeNativeTarget();
std.debug.warn("cgen: start gen\n");
_ = llvm.LLVMInitializeNativeTarget();
var mod = llvm.LLVMModuleCreateWithName(c"awoo").?;
defer llvm.LLVMDisposeModule(mod);
@ -75,15 +79,65 @@ pub const Codegen = struct {
}
var err: ?[*]u8 = null;
defer llvm.LLVMDisposeMessage(err);
_ = llvm.LLVMVerifyModule(
mod,
llvm.LLVMVerifierFailureAction.LLVMAbortProcessAction,
&err,
);
llvm.LLVMDisposeMessage(err);
if (llvm.LLVMWriteBitcodeToFile(mod, c"awoo.bc") != 0) {
std.debug.warn("error writing bitcode to file\n");
std.debug.warn("error writing bitcode to file: {}\n", sliceify(err));
// TODO return error value
@panic("compile error");
}
//llvm.InitializeAllTargetInfos();
//llvm.InitializeAllTargets();
//llvm.InitializeAllTargetMCs();
//llvm.InitializeAllAsmParsers();
//llvm.InitializeAllAsmPrinters();
var engine: llvm.LLVMExecutionEngineRef = undefined;
if (llvm.LLVMCreateExecutionEngineForModule(&engine, mod, &err) != 0) {
std.debug.warn("failed to create execution engine: {}\n", sliceify(err));
// TODO return error value
@panic("compile error");
}
var machine = llvm.LLVMGetExecutionEngineTargetMachine(engine);
defer llvm.LLVMDisposeTargetMachine(machine);
var target = llvm.LLVMGetTargetMachineTarget(machine);
var target_data = llvm.LLVMCreateTargetDataLayout(machine);
var data_layout = llvm.LLVMCopyStringRepOfTargetData(target_data);
llvm.LLVMSetDataLayout(mod, data_layout);
var outpath = try std.mem.dupe(self.allocator, u8, "output.o");
var outpath_cstr = try std.cstr.addNullByte(self.allocator, outpath);
var desc = llvm.LLVMGetTargetDescription(target);
var features = llvm.LLVMGetTargetMachineFeatureString(machine);
var triple = llvm.LLVMGetTargetMachineTriple(machine);
std.debug.warn("target: {}\n", sliceify(desc));
std.debug.warn("triple: {}\n", sliceify(triple));
std.debug.warn("features: {}\n", sliceify(features));
if (llvm.LLVMTargetMachineEmitToFile(
machine,
mod,
outpath_cstr.ptr,
llvm.LLVMCodeGenFileType.LLVMObjectFile,
&err,
) != 0) {
std.debug.warn("failed to emit to file: {}\n", sliceify(err));
// TODO return error value
@panic("compile error");
}
}
};

14
src/llvm.zig
View File

@ -4,6 +4,7 @@ pub const llvm = @cImport({
@cInclude("llvm-c/Core.h");
@cInclude("llvm-c/ExecutionEngine.h");
@cInclude("llvm-c/Target.h");
@cInclude("llvm-c/TargetMachine.h");
@cInclude("llvm-c/Analysis.h");
@cInclude("llvm-c/BitWriter.h");
@ -15,17 +16,4 @@ pub const llvm = @cImport({
usingnamespace llvm;
//pub const LLVMModuleRef = llvm.LLVMModuleRef;
//pub const LLVMInt32Type = llvm.LLVMInt32Type;
//pub const LLVMModuleCreateWithName = llvm.LLVMModuleCreateWithName;
//pub const LLVMFunctionType = llvm.LLVMFunctionType;
//pub const LLVMAddFunction = llvm.LLVMAddFunction;
//
//pub const LLVMBasicBlockRef = llvm.LLVMBasicBlockRef;
//pub const LLVMAppendBasicBlock = llvm.LLVMAppendBasicBlock;
//
//pub const LLVMBuilderRef = llvm.LLVMBuilderRef;
//pub const LLVMCreateBuilder = llvm.LLVMCreateBuilder;
//pub const LLVMPositionBuilderAtEnd = llvm.LLVMPositionBuilderAtEnd;
pub const LLVMTypeList = std.ArrayList(llvm.LLVMTypeRef);