4550badf58
This will help keep READMEs in sync with code. Also adds a README for the add example. Updates #14
920 B
920 B
add
Add two numbers with avo.
The code generator is as follows:
// +build ignore
package main
import (
. "github.com/mmcloughlin/avo/build"
)
func main() {
TEXT("Add", "func(x, y uint64) uint64")
Doc("Add adds x and y.")
x := Load(Param("x"), GP64v())
y := Load(Param("y"), GP64v())
ADDQ(x, y)
Store(y, ReturnIndex(0))
RET()
Generate()
}
We use a go:generate line to produce the assembly and Go stub files together.
//go:generate go run asm.go -out add.s -stubs stub.go
This produces add.s as follows:
// Code generated by command: go run asm.go -out add.s -stubs stub.go. DO NOT EDIT.
// func Add(x uint64, y uint64) uint64
TEXT ·Add(SB), $0-24
MOVQ x(FP), AX
MOVQ y+8(FP), CX
ADDQ AX, CX
MOVQ CX, ret+16(FP)
RET