// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"fmt"
	"internal/abi"
	"strconv"
	"strings"
	"text/scanner"

	"cmd/asm/internal/arch"
	"cmd/asm/internal/flags"
	"cmd/asm/internal/lex"
	"cmd/internal/obj"
	"cmd/internal/obj/arm64"
	"cmd/internal/obj/ppc64"
	"cmd/internal/obj/riscv"
	"cmd/internal/obj/x86"

	"Path":  "/doc/asm"
}-->

<h2 id="introduction">A Quick Guide to Go's Assembler</h2>

<p>
This document is a quick outline of the unusual form of assembly language used by the <code>gc</code> Go compiler.
The document is not comprehensive.
</p>

<p>
The assembler is based on the input style of the Plan 9 assemblers, which is documented in detail
<a href="https://9p.io/sys/doc/asm.html">elsewhere</a>.

import (
	"bufio"
	"flag"
	"fmt"
	"internal/buildcfg"
	"log"
	"os"

	"cmd/asm/internal/arch"
	"cmd/asm/internal/asm"
	"cmd/asm/internal/flags"
	"cmd/asm/internal/lex"

	"cmd/internal/bio"
	"cmd/internal/obj"
	"cmd/internal/objabi"
	"cmd/internal/telemetry/counter"
)

func main() {
	log.SetFlags(0)
	log.SetPrefix("asm: ")
	counter.Open()

	buildcfg.Check()
	GOARCH := buildcfg.GOARCH

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"internal/buildcfg"
	"strings"
	"testing"

	"cmd/asm/internal/arch"
	"cmd/asm/internal/lex"
	"cmd/internal/obj"
)

// A simple in-out test: Do we print what we parse?

func setArch(goarch string) (*arch.Arch, *obj.Link) {

the Redistributor's license for terms and conditions of use. ASM 4.1 The plug-in includes software developed by the ObjectWeb consortium as part of the ASM project at http://asm.ow2.org/ http://asm.ow2.org/. A subset of ASM is re-packaged within the source and binary of the plug-in (org.eclipse.sisu.space.asm.*) to avoid version collisions with other usage and is also available from the plug-in's github repository. Your use of the ASM code is subject to the terms and conditions of the ASM License...

// license that can be found in the LICENSE file.

/*
Asm, typically invoked as “go tool asm”, assembles the source file into an object
file named for the basename of the argument source file with a .o suffix. The
object file can then be combined with other objects into a package archive.

# Command Line

Usage:

	go tool asm [flags] file

The specified file must be a Go assembly file.

	// WORD
	//
	WORD	$1

	//
	// NOP
	//
	//	LNOP comma // asm doesn't support the trailing comma.
	//	{
	//		outcode(int($1), &nullgen, 0, &nullgen);
	//	}
	NOP

	//	LNOP rreg comma // asm doesn't support the trailing comma.
	//	{
	//		outcode(int($1), &$2, 0, &nullgen);
	//	}
	NOP	R2

	//	LNOP freg comma // asm doesn't support the trailing comma.
	//	{

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"strings"
	"testing"

	"cmd/asm/internal/lex"
)

func tokenize(s string) [][]lex.Token {
	res := [][]lex.Token{}
	if len(s) == 0 {
		return res
	}
	for _, o := range strings.Split(s, ",") {
		res = append(res, lex.Tokenize(o))
	}

	SYNC		// 0000000f

//
// NOP
//
//	LNOP comma // asm doesn't support the trailing comma.
//	{
//		outcode(int($1), &nullgen, 0, &nullgen);
//	}
	NOP

//	LNOP rreg comma // asm doesn't support the trailing comma.
//	{
//		outcode(int($1), &$2, 0, &nullgen);
//	}
	NOP R2

//	LNOP freg comma // asm doesn't support the trailing comma.
//	{
//		outcode(int($1), &$2, 0, &nullgen);

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package asm

import (
	"cmd/asm/internal/lex"
	"strings"
	"testing"
)

type badInstTest struct {
	input, error string
}

func TestAMD64BadInstParser(t *testing.T) {
	testBadInstParser(t, "amd64", []badInstTest{
		// Test AVX512 suffixes.