예제 #1
0
파일: cabi.go 프로젝트: hinike/llgo
func directDecode(ctx llvm.Context, allocaBuilder llvm.Builder, builder llvm.Builder, valType llvm.Type, args []llvm.Value) llvm.Value {
	var alloca llvm.Value

	switch len(args) {
	case 0:
		return llvm.ConstNull(ctx.StructType(nil, false))

	case 1:
		if args[0].Type().C == valType.C {
			return args[0]
		}
		alloca = allocaBuilder.CreateAlloca(valType, "")
		bitcast := builder.CreateBitCast(alloca, llvm.PointerType(args[0].Type(), 0), "")
		builder.CreateStore(args[0], bitcast)

	case 2:
		alloca = allocaBuilder.CreateAlloca(valType, "")
		var argTypes []llvm.Type
		for _, a := range args {
			argTypes = append(argTypes, a.Type())
		}
		encodeType := ctx.StructType(argTypes, false)
		bitcast := builder.CreateBitCast(alloca, llvm.PointerType(encodeType, 0), "")
		builder.CreateStore(args[0], builder.CreateStructGEP(bitcast, 0, ""))
		builder.CreateStore(args[1], builder.CreateStructGEP(bitcast, 1, ""))

	default:
		panic("unexpected argTypes size")
	}

	return builder.CreateLoad(alloca, "")
}
예제 #2
0
파일: cabi.go 프로젝트: hinike/llgo
func directEncode(ctx llvm.Context, allocaBuilder llvm.Builder, builder llvm.Builder, argTypes []llvm.Type, args []llvm.Value, val llvm.Value) {
	valType := val.Type()

	switch len(argTypes) {
	case 0:
		// do nothing

	case 1:
		if argTypes[0].C == valType.C {
			args[0] = val
			return
		}
		alloca := allocaBuilder.CreateAlloca(valType, "")
		bitcast := builder.CreateBitCast(alloca, llvm.PointerType(argTypes[0], 0), "")
		builder.CreateStore(val, alloca)
		args[0] = builder.CreateLoad(bitcast, "")

	case 2:
		encodeType := llvm.StructType(argTypes, false)
		alloca := allocaBuilder.CreateAlloca(valType, "")
		bitcast := builder.CreateBitCast(alloca, llvm.PointerType(encodeType, 0), "")
		builder.CreateStore(val, alloca)
		args[0] = builder.CreateLoad(builder.CreateStructGEP(bitcast, 0, ""), "")
		args[1] = builder.CreateLoad(builder.CreateStructGEP(bitcast, 1, ""), "")

	default:
		panic("unexpected argTypes size")
	}
}
예제 #3
0
파일: cabi.go 프로젝트: hinike/llgo
func (ri *indirectRetInfo) decode(ctx llvm.Context, allocaBuilder llvm.Builder, builder llvm.Builder, call llvm.Value) []llvm.Value {
	if ri.numResults == 1 {
		return []llvm.Value{builder.CreateLoad(ri.sretSlot, "")}
	} else {
		vals := make([]llvm.Value, ri.numResults)
		for i, _ := range vals {
			vals[i] = builder.CreateLoad(builder.CreateStructGEP(ri.sretSlot, i, ""), "")
		}
		return vals
	}
}
예제 #4
0
파일: cabi.go 프로젝트: hinike/llgo
func (ai *indirectArgInfo) decode(ctx llvm.Context, allocaBuilder llvm.Builder, builder llvm.Builder) llvm.Value {
	fn := builder.GetInsertBlock().Parent()
	return builder.CreateLoad(fn.Param(ai.argOffset), "")
}