cmd/internal/asm: delete

Updates #10510.

Change-Id: Ib4d39943969d18517b373292b83d87650d5df12a
Reviewed-on: https://go-review.googlesource.com/12787
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/internal/asm/asm.go

-// Inferno utils/6a/a.h and lex.c.
-// http://code.google.com/p/inferno-os/source/browse/utils/6a/a.h
-// http://code.google.com/p/inferno-os/source/browse/utils/6a/lex.c
-//
-//	Copyright © 1994-1999 Lucent Technologies Inc.	All rights reserved.
-//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
-//	Portions Copyright © 1997-1999 Vita Nuova Limited
-//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
-//	Portions Copyright © 2004,2006 Bruce Ellis
-//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
-//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
-//	Portions Copyright © 2009 The Go Authors.  All rights reserved.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-// Package asm holds code shared among the assemblers.
-package asm
-
-import (
-	"flag"
-	"fmt"
-	"log"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-
-	"cmd/internal/obj"
-)
-
-// Initialized by client.
-var (
-	LSCONST int
-	LCONST  int
-	LFCONST int
-	LNAME   int
-	LVAR    int
-	LLAB    int
-
-	Thechar     rune
-	Thestring   string
-	Thelinkarch *obj.LinkArch
-
-	Arches map[string]*obj.LinkArch
-
-	Cclean  func()
-	Yyparse func()
-	Syminit func(*Sym)
-
-	Lexinit []Lextab
-)
-
-type Lextab struct {
-	Name  string
-	Type  int
-	Value int64
-}
-
-const (
-	MAXALIGN = 7
-	FPCHIP   = 1
-	NSYMB    = 500
-	BUFSIZ   = 8192
-	HISTSZ   = 20
-	EOF      = -1
-	IGN      = -2
-	NHASH    = 503
-	NMACRO   = 10
-)
-
-const (
-	CLAST = iota
-	CMACARG
-	CMACRO
-	CPREPROC
-)
-
-type Macro struct {
-	Text string
-	Narg int
-	Dots bool
-}
-
-type Sym struct {
-	Link      *Sym
-	Ref       *Ref
-	Macro     *Macro
-	Value     int64
-	Type      int
-	Name      string
-	Labelname string
-	Sym       int8
-}
-
-type Ref struct {
-	Class int
-}
-
-type Io struct {
-	Link *Io
-	P    []byte
-	F    *os.File
-	B    [1024]byte
-}
-
-var fi struct {
-	P []byte
-}
-
-var (
-	debug    [256]int
-	hash     = map[string]*Sym{}
-	Dlist    []string
-	newflag  int
-	hunk     string
-	include  []string
-	iofree   *Io
-	ionext   *Io
-	iostack  *Io
-	Lineno   int32
-	nerrors  int
-	nhunk    int32
-	ninclude int
-	nsymb    int32
-	nullgen  obj.Addr
-	outfile  string
-	Pass     int
-	PC       int32
-	peekc    int = IGN
-	sym      int
-	symb     string
-	thunk    int32
-	obuf     obj.Biobuf
-	Ctxt     *obj.Link
-	bstdout  obj.Biobuf
-)
-
-func dodef(p string) {
-	Dlist = append(Dlist, p)
-}
-
-func usage() {
-	fmt.Printf("usage: %ca [options] file.c...\n", Thechar)
-	flag.PrintDefaults()
-	errorexit()
-}
-
-func Main() {
-	// Allow GOARCH=Thestring or GOARCH=Thestringsuffix,
-	// but not other values.
-	p := obj.Getgoarch()
-
-	if !strings.HasPrefix(p, Thestring) {
-		log.Fatalf("cannot use %cc with GOARCH=%s", Thechar, p)
-	}
-	if p != Thestring {
-		Thelinkarch = Arches[p]
-		if Thelinkarch == nil {
-			log.Fatalf("unknown arch %s", p)
-		}
-	}
-
-	Ctxt = obj.Linknew(Thelinkarch)
-	Ctxt.Diag = Yyerror
-	Ctxt.Bso = &bstdout
-	Ctxt.Enforce_data_order = 1
-	bstdout = *obj.Binitw(os.Stdout)
-
-	debug = [256]int{}
-	cinit()
-	outfile = ""
-	setinclude(".")
-
-	flag.Var(flagFn(dodef), "D", "name[=value]: add #define")
-	flag.Var(flagFn(setinclude), "I", "dir: add dir to include path")
-	flag.Var((*count)(&debug['S']), "S", "print assembly and machine code")
-	flag.Var((*count)(&debug['m']), "m", "debug preprocessor macros")
-	flag.StringVar(&outfile, "o", "", "file: set output file")
-	flag.StringVar(&Ctxt.LineHist.TrimPathPrefix, "trimpath", "", "prefix: remove prefix from recorded source file paths")
-
-	flag.Parse()
-
-	Ctxt.Debugasm = int32(debug['S'])
-
-	if flag.NArg() < 1 {
-		usage()
-	}
-	if flag.NArg() > 1 {
-		fmt.Printf("can't assemble multiple files\n")
-		errorexit()
-	}
-
-	if assemble(flag.Arg(0)) != 0 {
-		errorexit()
-	}
-	bstdout.Flush()
-	if nerrors > 0 {
-		errorexit()
-	}
-}
-
-func assemble(file string) int {
-	if outfile == "" {
-		outfile = strings.TrimSuffix(filepath.Base(file), ".s") + "." + string(Thechar)
-	}
-
-	of, err := os.Create(outfile)
-	if err != nil {
-		Yyerror("%ca: cannot create %s", Thechar, outfile)
-		errorexit()
-	}
-
-	obuf = *obj.Binitw(of)
-	fmt.Fprintf(&obuf, "go object %s %s %s\n", obj.Getgoos(), obj.Getgoarch(), obj.Getgoversion())
-	fmt.Fprintf(&obuf, "!\n")
-
-	var i int
-	for Pass = 1; Pass <= 2; Pass++ {
-		pinit(file)
-		for i = 0; i < len(Dlist); i++ {
-			dodefine(Dlist[i])
-		}
-		Yyparse()
-		Cclean()
-		if nerrors != 0 {
-			return nerrors
-		}
-	}
-
-	obj.Writeobjdirect(Ctxt, &obuf)
-	obuf.Flush()
-	return 0
-}
-
-func cinit() {
-	for i := 0; i < len(Lexinit); i++ {
-		s := Lookup(Lexinit[i].Name)
-		if s.Type != LNAME {
-			Yyerror("double initialization %s", Lexinit[i].Name)
-		}
-		s.Type = Lexinit[i].Type
-		s.Value = Lexinit[i].Value
-	}
-}
-
-func syminit(s *Sym) {
-	s.Type = LNAME
-	s.Value = 0
-}
-
-type flagFn func(string)
-
-func (flagFn) String() string {
-	return "<arg>"
-}
-
-func (f flagFn) Set(s string) error {
-	f(s)
-	return nil
-}
-
-type yyImpl struct{}
-
-// count is a flag.Value that is like a flag.Bool and a flag.Int.
-// If used as -name, it increments the count, but -name=x sets the count.
-// Used for verbose flag -v.
-type count int
-
-func (c *count) String() string {
-	return fmt.Sprint(int(*c))
-}
-
-func (c *count) Set(s string) error {
-	switch s {
-	case "true":
-		*c++
-	case "false":
-		*c = 0
-	default:
-		n, err := strconv.Atoi(s)
-		if err != nil {
-			return fmt.Errorf("invalid count %q", s)
-		}
-		*c = count(n)
-	}
-	return nil
-}
-
-func (c *count) IsBoolFlag() bool {
-	return true
-}