move things out of sys into os and runtime

R=r
OCL=28569
CL=28573

doc/progs/cat.go

@@ -18,7 +18,7 @@ func cat(f *file.File) {
 		switch nr, er := f.Read(&buf); true {
 		case nr < 0:
 			fmt.Fprintf(os.Stderr, "error reading from %s: %s\n", f.String(), er.String());
-			sys.Exit(1);
+			os.Exit(1);
 		case nr == 0:  // EOF
 			return;
 		case nr > 0:
@@ -38,7 +38,7 @@ func main() {
 		f, err := file.Open(flag.Arg(i), 0, 0);
 		if f == nil {
 			fmt.Fprintf(os.Stderr, "can't open %s: error %s\n", flag.Arg(i), err);
-			sys.Exit(1);
+			os.Exit(1);
 		}
 		cat(f);
 		f.Close();

doc/progs/cat_rot13.go

@@ -60,7 +60,7 @@ func cat(r reader) {
 		switch nr, er := r.Read(&buf); {
 		case nr < 0:
 			fmt.Fprintf(os.Stderr, "error reading from %s: %s\n", r.String(), er.String());
-			sys.Exit(1);
+			os.Exit(1);
 		case nr == 0:  // EOF
 			return;
 		case nr > 0:
@@ -81,7 +81,7 @@ func main() {
 		f, err := file.Open(flag.Arg(i), 0, 0);
 		if f == nil {
 			fmt.Fprintf(os.Stderr, "can't open %s: error %s\n", flag.Arg(i), err);
-			sys.Exit(1);
+			os.Exit(1);
 		}
 		cat(f);
 		f.Close();

doc/progs/helloworld3.go

@@ -7,6 +7,7 @@ package main
 import (
 	"file";
 	"fmt";
+	"os";
 )
 
 func main() {
@@ -15,6 +16,6 @@ func main() {
 	file, err := file.Open("/does/not/exist",  0,  0);
 	if file == nil {
 		fmt.Printf("can't open file; err=%s\n",  err.String());
-		sys.Exit(1);
+		os.Exit(1);
 	}
 }

doc/progs/strings.go

@@ -5,10 +5,11 @@
 package main
 
 import "fmt"
+import "os"
 
 func main() {
 	s := "hello";
-	if s[1] != 'e' { sys.Exit(1) }
+	if s[1] != 'e' { os.Exit(1) }
 	s = "good bye";
 	var p *string = &s;
 	*p = "ciao";

src/cmd/gc/Makefile

@@ -44,7 +44,7 @@ y.tab.h: $(YFILES)
 y.tab.c: y.tab.h
 	test -f y.tab.c && touch y.tab.c
 
-builtin.c:	sys.go unsafe.go mkbuiltin1.c mkbuiltin
+builtin.c:	sys.go unsafe.go runtime.go mkbuiltin1.c mkbuiltin
 	./mkbuiltin >builtin.c || \
 	(echo 'mkbuiltin failed; using bootstrap copy of builtin.c'; cp builtin.c.boot builtin.c)
 

src/cmd/gc/builtin.c.boot

@@ -55,13 +55,6 @@ char *sysimport =
 	"func sys.arrayslices (old *any, nel int, lb int, hb int, width int) (ary []any)\n"
 	"func sys.arrays2d (old *any, nel int) (ary []any)\n"
 	"func sys.closure ()\n"
-	"func sys.Breakpoint ()\n"
-	"var sys.Args []string\n"
-	"var sys.Envs []string\n"
-	"func sys.Gosched ()\n"
-	"func sys.Goexit ()\n"
-	"func sys.Exit (? int)\n"
-	"func sys.Caller (n int) (pc uint64, file string, line int, ok bool)\n"
 	"\n"
 	"$$\n";
 char *unsafeimport =
@@ -74,3 +67,11 @@ char *unsafeimport =
 	"func unsafe.Unreflect (? uint64, ? string, ? bool) (ret interface { })\n"
 	"\n"
 	"$$\n";
+char *runtimeimport =
+	"package runtime\n"
+	"func runtime.Breakpoint ()\n"
+	"func runtime.Gosched ()\n"
+	"func runtime.Goexit ()\n"
+	"func runtime.Caller (n int) (pc uint64, file string, line int, ok bool)\n"
+	"\n"
+	"$$\n";

src/cmd/gc/go.h

@@ -541,6 +541,7 @@ EXTERN	Sym*	pkgimportname;	// package name from imported package
 EXTERN	int	tptr;		// either TPTR32 or TPTR64
 extern	char*	sysimport;
 extern	char*	unsafeimport;
+extern	char*	runtimeimport;
 EXTERN	char*	filename;	// name to uniqify names
 EXTERN	Idir*	idirs;
 

src/cmd/gc/lex.c

@@ -265,6 +265,10 @@ importfile(Val *f)
 		cannedimports("unsafe.6", unsafeimport);
 		return;
 	}
+	if(strcmp(f->u.sval->s, "runtime") == 0) {
+		cannedimports("runtime.6", runtimeimport);
+		return;
+	}
 
 	if(!findpkg(f->u.sval))
 		fatal("can't find import: %Z", f->u.sval);

src/cmd/gc/mkbuiltin

@@ -5,11 +5,12 @@
 
 set -e
 gcc -o mkbuiltin1 mkbuiltin1.c
-6g sys.go
-6g unsafe.go
 rm -f _builtin.c
-./mkbuiltin1 sys >_builtin.c
-./mkbuiltin1 unsafe >>_builtin.c
+for i in sys unsafe runtime
+do
+	6g $i.go
+	./mkbuiltin1 $i >>_builtin.c
+done
 
 # If _builtin.c has changed vs builtin.c.boot,
 # check in the new change if being run by

src/cmd/gc/runtime.go

@@ -0,0 +1,9 @@
+// Copyright 2009 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 PACKAGE
+func	Breakpoint();
+func	Gosched();
+func	Goexit();
+func	Caller(n int) (pc uint64, file string, line int, ok bool);

src/cmd/gc/sys.go

@@ -72,17 +72,3 @@ func	arrayslices(old *any, nel int, lb int, hb int, width int) (ary []any);
 func	arrays2d(old *any, nel int) (ary []any);
 
 func	closure();	// has args, but compiler fills in
-
-// used by go programs
-
-func	Breakpoint();
-
-var	Args []string;
-var	Envs []string;
-
-func	Gosched();
-func	Goexit();
-
-func	Exit(int);
-
-func	Caller(n int) (pc uint64, file string, line int, ok bool);

src/cmd/gobuild/gobuild.go

@@ -131,7 +131,7 @@ func ScanFiles(filenames []string) *Info {
 	// TODO(rsc): Build a binary from package main?
 
 	z := new(Info);
-	z.Args = sys.Args;
+	z.Args = os.Args;
 	z.Dir = PkgDir();
 	z.Char = theChar;	// for template
 	z.ObjDir = ObjDir;	// for template

src/cmd/gobuild/util.go

@@ -34,7 +34,7 @@ const ObjDir = "_obj"
 
 func fatal(args ...) {
 	fmt.Fprintf(os.Stderr, "gobuild: %s\n", fmt.Sprint(args));
-	sys.Exit(1);
+	os.Exit(1);
 }
 
 func init() {

src/lib/flag/flag.go

@@ -261,15 +261,15 @@ func PrintDefaults() {
 }
 
 // Usage prints to standard error a default usage message documenting all defined flags and
-// then calls sys.Exit(1).
+// then calls os.Exit(1).
 func Usage() {
-	if len(sys.Args) > 0 {
-		fmt.Fprintln(os.Stderr, "Usage of", sys.Args[0] + ":");
+	if len(os.Args) > 0 {
+		fmt.Fprintln(os.Stderr, "Usage of", os.Args[0] + ":");
 	} else {
 		fmt.Fprintln(os.Stderr, "Usage:");
 	}
 	PrintDefaults();
-	sys.Exit(1);
+	os.Exit(1);
 }
 
 func NFlag() int {
@@ -280,20 +280,20 @@ func NFlag() int {
 // after flags have been processed.
 func Arg(i int) string {
 	i += flags.first_arg;
-	if i < 0 || i >= len(sys.Args) {
+	if i < 0 || i >= len(os.Args) {
 		return "";
 	}
-	return sys.Args[i]
+	return os.Args[i]
 }
 
 // NArg is the number of arguments remaining after flags have been processed.
 func NArg() int {
-	return len(sys.Args) - flags.first_arg
+	return len(os.Args) - flags.first_arg
 }
 
 // Args returns the non-flag command-line arguments.
 func Args() []string {
-	return sys.Args[flags.first_arg:len(sys.Args)];
+	return os.Args[flags.first_arg:len(os.Args)];
 }
 
 func add(name string, value FlagValue, usage string) {
@@ -393,7 +393,7 @@ func String(name, value string, usage string) *string {
 
 func (f *allFlags) parseOne(index int) (ok bool, next int)
 {
-	s := sys.Args[index];
+	s := os.Args[index];
 	f.first_arg = index;  // until proven otherwise
 	if len(s) == 0 {
 		return false, -1
@@ -450,11 +450,11 @@ func (f *allFlags) parseOne(index int) (ok bool, next int)
 		}
 	} else {
 		// It must have a value, which might be the next argument.
-		if !has_value && index < len(sys.Args)-1 {
+		if !has_value && index < len(os.Args)-1 {
 			// value is the next arg
 			has_value = true;
 			index++;
-			value = sys.Args[index];
+			value = os.Args[index];
 		}
 		if !has_value {
 			print("flag needs an argument: -", name, "\n");
@@ -473,7 +473,7 @@ func (f *allFlags) parseOne(index int) (ok bool, next int)
 // Parse parses the command-line flags.  Must be called after all flags are defined
 // and before any are accessed by the program.
 func Parse() {
-	for i := 1; i < len(sys.Args); {
+	for i := 1; i < len(os.Args); {
 		ok, next := flags.parseOne(i);
 		if next > 0 {
 			flags.first_arg = next;

src/lib/http/triv.go

@@ -74,7 +74,7 @@ func FlagServer(c *http.Conn, req *http.Request) {
 
 // simple argument server
 func ArgServer(c *http.Conn, req *http.Request) {
-	for i, s := range sys.Args {
+	for i, s := range os.Args {
 		fmt.Fprint(c, s, " ");
 	}
 }

src/lib/log/log.go

@@ -14,6 +14,7 @@ package log
 import (
 	"fmt";
 	"io";
+	"runtime";
 	"os";
 	"time";
 )
@@ -96,7 +97,7 @@ func (l *Logger) formatHeader(ns int64, calldepth int) string {
 		}
 	}
 	if l.flag & (Lshortfile | Llongfile) != 0 {
-		pc, file, line, ok := sys.Caller(calldepth);
+		pc, file, line, ok := runtime.Caller(calldepth);
 		if ok {
 			if l.flag & Lshortfile != 0 {
 				short, ok := shortnames[file];
@@ -139,7 +140,7 @@ func (l *Logger) Output(calldepth int, s string) {
 	case Lcrash:
 		panic("log: fatal error");
 	case Lexit:
-		sys.Exit(1);
+		os.Exit(1);
 	}
 }
 
@@ -173,12 +174,12 @@ func Stderrf(format string, v ...) {
 	stderr.Output(2, fmt.Sprintf(format, v))
 }
 
-// Exit is equivalent to Stderr() followed by a call to sys.Exit(1).
+// Exit is equivalent to Stderr() followed by a call to os.Exit(1).
 func Exit(v ...) {
 	exit.Output(2, fmt.Sprintln(v))
 }
 
-// Exitf is equivalent to Stderrf() followed by a call to sys.Exit(1).
+// Exitf is equivalent to Stderrf() followed by a call to os.Exit(1).
 func Exitf(format string, v ...) {
 	exit.Output(2, fmt.Sprintf(format, v))
 }

src/lib/os/Makefile

@@ -3,7 +3,7 @@
 # license that can be found in the LICENSE file.
 
 # DO NOT EDIT.  Automatically generated by gobuild.
-# gobuild -m dir_${GOARCH}_${GOOS}.go env.go error.go file.go stat_${GOARCH}_${GOOS}.go time.go types.go exec.go >Makefile
+# gobuild -m dir_${GOARCH}_${GOOS}.go env.go error.go file.go proc.go stat_${GOARCH}_${GOOS}.go time.go types.go exec.go >Makefile
 
 D=
 
@@ -41,6 +41,7 @@ coverage: packages
 
 O1=\
 	error.$O\
+	proc.$O\
 	types.$O\
 
 O2=\
@@ -60,7 +61,7 @@ phases: a1 a2 a3 a4
 _obj$D/os.a: phases
 
 a1: $(O1)
-	$(AR) grc _obj$D/os.a error.$O types.$O
+	$(AR) grc _obj$D/os.a error.$O proc.$O types.$O
 	rm -f $(O1)
 
 a2: $(O2)

src/lib/os/env.go

@@ -19,7 +19,7 @@ var env map[string] string;
 
 func copyenv() {
 	env = make(map[string] string);
-	for i, s := range sys.Envs {
+	for i, s := range os.Envs {
 		for j := 0; j < len(s); j++ {
 			if s[j] == '=' {
 				env[s[0:j]] = s[j+1:len(s)];

src/lib/os/file.go

@@ -132,7 +132,7 @@ func (file *File) Write(b []byte) (ret int, err Error) {
 	if e == syscall.EPIPE {
 		file.nepipe++;
 		if file.nepipe >= 10 {
-			sys.Exit(syscall.EPIPE);
+			os.Exit(syscall.EPIPE);
 		}
 	} else {
 		file.nepipe = 0;

src/lib/regexp/regexp.go

@@ -25,6 +25,7 @@ package regexp
 import (
 	"container/vector";
 	"os";
+	"runtime";
 	"utf8";
 )
 
@@ -236,7 +237,7 @@ func (nop *_Nop) print() { print("nop") }
 func (re *Regexp) setError(err os.Error) {
 	re.error = err;
 	re.ch <- re;
-	sys.Goexit();
+	runtime.Goexit();
 }
 
 func (re *Regexp) add(i instr) instr {

src/lib/template/template.go

@@ -44,7 +44,7 @@
 	first looked for in the cursor, as in .section and .repeated.
 	If it is not found, the search continues in outer sections
 	until the top level is reached.
-	
+
 	If a formatter is specified, it must be named in the formatter
 	map passed to the template set up routines or in the default
 	set ("html","str","") and is used to process the data for
@@ -61,6 +61,7 @@ import (
 	"io";
 	"os";
 	"reflect";
+	"runtime";
 	"strings";
 	"template";
 	"container/vector";
@@ -181,7 +182,7 @@ func New(fmap FormatterMap) *Template {
 // Generic error handler, called only from execError or parseError.
 func error(errors chan os.Error, line int, err string, args ...) {
 	errors <- ParseError{fmt.Sprintf("line %d: %s", line, fmt.Sprintf(err, args))};
-	sys.Goexit();
+	runtime.Goexit();
 }
 
 // Report error and stop executing.  The line number must  be provided explicitly.

src/lib/testing/testing.go

@@ -14,6 +14,8 @@ package testing
 import (
 	"flag";
 	"fmt";
+	"os";
+	"runtime";
 )
 
 // Report as tests are run; default is silent for success.
@@ -47,7 +49,7 @@ func (t *T) Fail() {
 func (t *T) FailNow() {
 	t.Fail();
 	t.ch <- t;
-	sys.Goexit();
+	runtime.Goexit();
 }
 
 // Log formats its arguments using default formatting, analogous to Print(),
@@ -129,7 +131,7 @@ func Main(tests []Test) {
 	}
 	if !ok {
 		println("FAIL");
-		sys.Exit(1);
+		os.Exit(1);
 	}
 	println("PASS");
 }

src/runtime/386/asm.s

@@ -84,12 +84,12 @@ TEXT mainstart(SB),7,$0
 	CALL	initdone(SB)
 	CALL	main·main(SB)
 	PUSHL	$0
-	CALL	sys·Exit(SB)
+	CALL	exit(SB)
 	POPL	AX
 	INT $3
 	RET
 
-TEXT	sys·Breakpoint(SB),7,$0
+TEXT	breakpoint(SB),7,$0
 	BYTE $0xcc
 	RET
 

src/runtime/386/traceback.c

@@ -82,7 +82,7 @@ traceback(byte *pc0, byte *sp, G *g)
 
 // func caller(n int) (pc uint64, file string, line int, ok bool)
 void
-sys·Caller(int32 n, uint64 retpc, string retfile, int32 retline, bool retbool)
+runtime·Caller(int32 n, uint64 retpc, string retfile, int32 retline, bool retbool)
 {
 	uint64 pc;
 	byte *sp;

src/runtime/amd64/asm.s

@@ -55,12 +55,12 @@ TEXT mainstart(SB),7,$0
 	CALL	initdone(SB)
 	CALL	main·main(SB)
 	PUSHQ	$0
-	CALL	sys·Exit(SB)
+	CALL	exit(SB)
 	POPQ	AX
 	CALL	notok(SB)
 	RET
 
-TEXT	sys·Breakpoint(SB),7,$0
+TEXT	breakpoint(SB),7,$0
 	BYTE	$0xcc
 	RET
 

src/runtime/amd64/traceback.c

@@ -79,7 +79,7 @@ traceback(byte *pc0, byte *sp, G *g)
 
 // func caller(n int) (pc uint64, file string, line int, ok bool)
 void
-sys·Caller(int32 n, uint64 retpc, String retfile, int32 retline, bool retbool)
+runtime·Caller(int32 n, uint64 retpc, String retfile, int32 retline, bool retbool)
 {
 	uint64 pc;
 	byte *sp;

src/runtime/chan.c

@@ -211,7 +211,7 @@ loop:
 	g->status = Gwaiting;
 	enqueue(&c->sendq, sg);
 	unlock(&chanlock);
-	sys·Gosched();
+	gosched();
 
 	lock(&chanlock);
 	sg = g->param;
@@ -237,7 +237,7 @@ asynch:
 		g->status = Gwaiting;
 		enqueue(&c->sendq, sg);
 		unlock(&chanlock);
-		sys·Gosched();
+		gosched();
 
 		lock(&chanlock);
 		goto asynch;
@@ -311,7 +311,7 @@ loop:
 	g->status = Gwaiting;
 	enqueue(&c->recvq, sg);
 	unlock(&chanlock);
-	sys·Gosched();
+	gosched();
 
 	lock(&chanlock);
 	sg = g->param;
@@ -339,7 +339,7 @@ asynch:
 		g->status = Gwaiting;
 		enqueue(&c->recvq, sg);
 		unlock(&chanlock);
-		sys·Gosched();
+		gosched();
 
 		lock(&chanlock);
 		goto asynch;
@@ -748,7 +748,7 @@ loop:
 	g->param = nil;
 	g->status = Gwaiting;
 	unlock(&chanlock);
-	sys·Gosched();
+	gosched();
 
 	lock(&chanlock);
 	sg = g->param;

src/runtime/darwin/386/signal.c

@@ -33,7 +33,7 @@ sighandler(int32 sig, Siginfo *info, void *context)
 	Regs *r;
 
 	if(panicking)	// traceback already printed
-		sys_Exit(2);
+		exit(2);
 	panicking = 1;
 
 	if(sig < 0 || sig >= NSIG){
@@ -56,8 +56,8 @@ sighandler(int32 sig, Siginfo *info, void *context)
 		dumpregs(r);
 	}
 
-	sys·Breakpoint();
-	sys_Exit(2);
+	breakpoint();
+	exit(2);
 }
 
 void

src/runtime/darwin/386/sys.s

@@ -11,7 +11,7 @@ TEXT notok(SB),7,$0
 	RET
 
 // Exit the entire program (like C exit)
-TEXT sys·Exit(SB),7,$0
+TEXT exit(SB),7,$0
 	MOVL	$1, AX
 	INT	$0x80
 	CALL	notok(SB)

src/runtime/darwin/amd64/signal.c

@@ -41,7 +41,7 @@ sighandler(int32 sig, Siginfo *info, void *context)
 	Regs *r;
 
 	if(panicking)	// traceback already printed
-		sys_Exit(2);
+		exit(2);
 	panicking = 1;
 
 	if(sig < 0 || sig >= NSIG){
@@ -64,8 +64,8 @@ sighandler(int32 sig, Siginfo *info, void *context)
 		dumpregs(r);
 	}
 
-	sys·Breakpoint();
-	sys_Exit(2);
+	breakpoint();
+	exit(2);
 }
 
 void

src/runtime/darwin/amd64/sys.s

@@ -9,7 +9,7 @@
 //
 
 // Exit the entire program (like C exit)
-TEXT	sys·Exit(SB),7,$-8
+TEXT	exit(SB),7,$-8
 	MOVL	8(SP), DI		// arg 1 exit status
 	MOVL	$(0x2000000+1), AX	// syscall entry
 	SYSCALL

src/runtime/linux/386/signal.c

@@ -40,7 +40,7 @@ sighandler(int32 sig, Siginfo* info, void* context)
 	Sigcontext *sc;
 
 	if(panicking)	// traceback already printed
-		sys_Exit(2);
+		exit(2);
 	panicking = 1;
 
 	uc = context;
@@ -61,8 +61,8 @@ sighandler(int32 sig, Siginfo* info, void* context)
 		dumpregs(sc);
 	}
 
-	sys·Breakpoint();
-	sys_Exit(2);
+	breakpoint();
+	exit(2);
 }
 
 void

src/runtime/linux/386/sys.s

@@ -20,7 +20,7 @@ TEXT syscall(SB),7,$0
 	INT $3	// not reached
 	RET
 
-TEXT sys·Exit(SB),7,$0
+TEXT exit(SB),7,$0
 	MOVL	$252, AX	// syscall number
 	MOVL	4(SP), BX
 	INT	$0x80

src/runtime/linux/amd64/signal.c

@@ -49,7 +49,7 @@ sighandler(int32 sig, Siginfo* info, void* context)
 	Sigcontext *sc;
 
 	if(panicking)	// traceback already printed
-		sys_Exit(2);
+		exit(2);
 	panicking = 1;
 
 	uc = context;
@@ -71,8 +71,8 @@ sighandler(int32 sig, Siginfo* info, void* context)
 		dumpregs(sc);
 	}
 
-	sys·Breakpoint();
-	sys_Exit(2);
+	breakpoint();
+	exit(2);
 }
 
 void

src/runtime/linux/amd64/sys.s

@@ -6,7 +6,7 @@
 // System calls and other sys.stuff for AMD64, Linux
 //
 
-TEXT	sys·Exit(SB),7,$0-8
+TEXT	exit(SB),7,$0-8
 	MOVL	8(SP), DI
 	MOVL	$231, AX	// exitgroup - force all os threads to exi
 	SYSCALL

src/runtime/proc.c

@@ -129,7 +129,7 @@ initdone(void)
 }
 
 void
-sys·Goexit(void)
+goexit(void)
 {
 	if(debug > 1){
 		lock(&debuglock);
@@ -137,7 +137,7 @@ sys·Goexit(void)
 		unlock(&debuglock);
 	}
 	g->status = Gmoribund;
-	sys·Gosched();
+	gosched();
 }
 
 void
@@ -431,7 +431,7 @@ scheduler(void)
 		case Gmoribund:
 			gp->status = Gdead;
 			if(--sched.gcount == 0)
-				sys_Exit(0);
+				exit(0);
 			break;
 		}
 		if(gp->readyonstop){
@@ -461,7 +461,7 @@ scheduler(void)
 // before running g again.  If g->status is Gmoribund,
 // kills off g.
 void
-sys·Gosched(void)
+gosched(void)
 {
 	if(g == m->g0)
 		throw("gosched of g0");
@@ -529,7 +529,7 @@ sys·exitsyscall(void)
 	// The scheduler will ready g and put this m to sleep.
 	// When the scheduler takes g awa from m,
 	// it will undo the sched.mcpu++ above.
-	sys·Gosched();
+	gosched();
 }
 
 /*
@@ -784,7 +784,7 @@ sys·newproc(int32 siz, byte* fn, byte* arg0)
 	mcpy(sp, (byte*)&arg0, siz);
 
 	sp -= sizeof(uintptr);
-	*(byte**)sp = (byte*)sys·Goexit;
+	*(byte**)sp = (byte*)goexit;
 
 	sp -= sizeof(uintptr);	// retpc used by gogo
 	newg->sched.SP = sp;
@@ -839,3 +839,21 @@ sys·deferreturn(int32 arg0)
 	jmpdefer(sp);
 }
 
+void
+runtime·Breakpoint(void)
+{
+	breakpoint();
+}
+
+void
+runtime·Goexit(void)
+{
+	goexit();
+}
+
+void
+runtime·Gosched(void)
+{
+	gosched();
+}
+

src/runtime/runtime.c

@@ -25,7 +25,7 @@ sys·panicl(int32 lno)
 
 	if(panicking) {
 		printf("double panic\n");
-		sys_Exit(3);
+		exit(3);
 	}
 	panicking++;
 
@@ -35,8 +35,8 @@ sys·panicl(int32 lno)
 		traceback(sys·getcallerpc(&lno), sp, g);
 		tracebackothers(g);
 	}
-	sys·Breakpoint();  // so we can grab it in a debugger
-	sys_Exit(2);
+	breakpoint();  // so we can grab it in a debugger
+	exit(2);
 }
 
 void
@@ -57,7 +57,7 @@ throw(int8 *s)
 	printf("throw: %s\n", s);
 	sys·panicl(-1);
 	*(int32*)0 = 0;	// not reached
-	sys_Exit(1);	// even more not reached
+	exit(1);	// even more not reached
 }
 
 void
@@ -136,8 +136,8 @@ rnd(uint32 n, uint32 m)
 static int32	argc;
 static uint8**	argv;
 
-Array sys·Args;
-Array sys·Envs;
+Array os·Args;
+Array os·Envs;
 
 void
 args(int32 c, uint8 **v)
@@ -161,15 +161,15 @@ goargs(void)
 
 	for(i=0; i<argc; i++)
 		gargv[i] = gostring(argv[i]);
-	sys·Args.array = (byte*)gargv;
-	sys·Args.nel = argc;
-	sys·Args.cap = argc;
+	os·Args.array = (byte*)gargv;
+	os·Args.nel = argc;
+	os·Args.cap = argc;
 
 	for(i=0; i<envc; i++)
 		genvv[i] = gostring(argv[argc+1+i]);
-	sys·Envs.array = (byte*)genvv;
-	sys·Envs.nel = envc;
-	sys·Envs.cap = envc;
+	os·Envs.array = (byte*)genvv;
+	os·Envs.nel = envc;
+	os·Envs.cap = envc;
 }
 
 byte*
@@ -182,8 +182,8 @@ getenv(int8 *s)
 
 	bs = (byte*)s;
 	len = findnull(bs);
-	envv = (String*)sys·Envs.array;
-	envc = sys·Envs.nel;
+	envv = (String*)os·Envs.array;
+	envc = os·Envs.nel;
 	for(i=0; i<envc; i++){
 		if(envv[i].len <= len)
 			continue;

src/runtime/runtime.h

@@ -329,6 +329,10 @@ uint32	noequal(uint32, void*, void*);
 void*	malloc(uintptr size);
 void*	mallocgc(uintptr size);
 void	free(void *v);
+void	exit(int32);
+void	breakpoint(void);
+void	gosched(void);
+void	goexit(void);
 
 #pragma	varargck	argpos	printf	1
 
@@ -378,15 +382,11 @@ void	notewakeup(Note*);
  * UTF-8 characters in identifiers.
  */
 #ifndef __GNUC__
-#define sys_Exit sys·Exit
-#define sys_Gosched sys·Gosched
 #define sys_memclr sys·memclr
 #define sys_write sys·write
-#define sys_Breakpoint sys·Breakpoint
 #define sys_catstring sys·catstring
 #define sys_cmpstring sys·cmpstring
 #define sys_getcallerpc sys·getcallerpc
-#define sys_Goexit sys·Goexit
 #define sys_indexstring sys·indexstring
 #define sys_intstring sys·intstring
 #define sys_mal sys·mal
@@ -408,11 +408,7 @@ void	notewakeup(Note*);
 /*
  * low level go-called
  */
-void	sys_Goexit(void);
-void	sys_Gosched(void);
-void	sys_Exit(int32);
 void	sys_write(int32, void*, int32);
-void	sys_Breakpoint(void);
 uint8*	sys_mmap(byte*, uint32, int32, int32, int32, uint32);
 void	sys_memclr(byte*, uint32);
 void	sys_setcallerpc(void*, void*);

src/runtime/sema.c

@@ -119,7 +119,7 @@ semsleep2(Sema *s)
 {
 	USED(s);
 	g->status = Gwaiting;
-	sys·Gosched();
+	gosched();
 }
 
 static int32

src/runtime/string.c

@@ -215,8 +215,6 @@ out:
 void
 sys·stringiter2(String s, int32 k, int32 retk, int32 retv)
 {
-	int32 l;
-
 	if(k >= s.len) {
 		// retk=0 is end of iteration
 		retk = 0;

test/235.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 type T chan uint64;
 
 func M(f uint64) (in, out T) {
@@ -65,5 +67,5 @@ func main() {
 		x = min(xs);
 		if x != OUT[i] { panic("bad: ", x, " should be ", OUT[i]); }
 	}
-	sys.Exit(0);
+	os.Exit(0);
 }

test/args.go

@@ -6,14 +6,16 @@
 
 package main
 
+import "os"
+
 func main() {
-	if len(sys.Args) != 3 {
+	if len(os.Args) != 3 {
 		panic("argc")
 	}
-	if sys.Args[1] != "arg1" {
+	if os.Args[1] != "arg1" {
 		panic("arg1")
 	}
-	if sys.Args[2] != "arg2" {
+	if os.Args[2] != "arg2" {
 		panic("arg2")
 	}
 }

test/chan/fifo.go

@@ -8,6 +8,8 @@
 
 package main
 
+import "os"
+
 const N = 10
 
 func AsynchFifo() {
@@ -18,7 +20,7 @@ func AsynchFifo() {
 	for i := 0; i < N; i++ {
 		if <-ch != i {
 			print("bad receive\n");
-			sys.Exit(1);
+			os.Exit(1);
 		}
 	}
 }

test/chan/goroutines.go

@@ -20,12 +20,12 @@ func f(left, right chan int) {
 
 func main() {
 	var n = 10000;
-	if len(sys.Args) > 1 {
+	if len(os.Args) > 1 {
 		var err os.Error;
-		n, err = strconv.Atoi(sys.Args[1]);
+		n, err = strconv.Atoi(os.Args[1]);
 		if err != nil {
 			print("bad arg\n");
-			sys.Exit(1);
+			os.Exit(1);
 		}
 	}
 	leftmost := make(chan int);

test/chan/nonblock.go

@@ -9,6 +9,7 @@
 
 package main
 
+import "runtime"
 import "time"
 
 func i32receiver(c chan int32, strobe chan bool) {
@@ -55,9 +56,9 @@ var ticker = time.Tick(10*1000);	// 10 us
 func sleep() {
 	<-ticker;
 	<-ticker;
-	sys.Gosched();
-	sys.Gosched();
-	sys.Gosched();
+	runtime.Gosched();
+	runtime.Gosched();
+	runtime.Gosched();
 }
 
 func main() {

test/chan/powser1.go

@@ -13,6 +13,8 @@
 
 package main
 
+import "os"
+
 type rat struct  {
 	num, den  int64;	// numerator, denominator
 }
@@ -623,7 +625,7 @@ func checka(U PS, a []rat, str string) {
 
 func main() {
 	Init();
-	if len(sys.Args) > 1 {  // print
+	if len(os.Args) > 1 {  // print
 		print("Ones: "); printn(Ones, 10);
 		print("Twos: "); printn(Twos, 10);
 		print("Add: "); printn(Add(Ones, Twos), 10);

test/chan/powser2.go

@@ -16,6 +16,8 @@
 
 package main
 
+import "os"
+
 type rat struct  {
 	num, den  int64;	// numerator, denominator
 }
@@ -636,7 +638,7 @@ func checka(U PS, a []*rat, str string) {
 
 func main() {
 	Init();
-	if len(sys.Args) > 1 {  // print
+	if len(os.Args) > 1 {  // print
 		print("Ones: "); Printn(Ones, 10);
 		print("Twos: "); Printn(Twos, 10);
 		print("Add: "); Printn(Add(Ones, Twos), 10);

test/chan/sieve.go

@@ -9,6 +9,8 @@
 
 package main
 
+import "os"
+
 // Send the sequence 2, 3, 4, ... to channel 'ch'.
 func Generate(ch chan<- int) {
 	for i := 2; ; i++ {
@@ -47,5 +49,5 @@ func main() {
 	for i := 0; i < len(a); i++ {
 		if x := <-primes; x != a[i] { panic(x, " != ", a[i]) }
 	}
-	sys.Exit(0);
+	os.Exit(0);
 }

test/char_lit.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 func main() {
   var i uint64 =
     ' ' +
@@ -33,10 +35,10 @@ func main() {
   ;
   if '\Ucafebabe' != 0xcafebabe {
   	print("cafebabe wrong\n");
-  	sys.Exit(1)
+  	os.Exit(1)
   }
   if i != 0xcc238de1 {
   	print("number is ", i, " should be ", 0xcc238de1, "\n");
-  	sys.Exit(1)
+  	os.Exit(1)
   }
 }

test/env.go

@@ -12,15 +12,15 @@ func main() {
 	ga, e0 := os.Getenv("GOARCH");
 	if e0 != nil {
 		print("$GOARCH: ", e0.String(), "\n");
-		sys.Exit(1);
+		os.Exit(1);
 	}
 	if ga != "amd64" {
 		print("$GOARCH=", ga, "\n");
-		sys.Exit(1);
+		os.Exit(1);
 	}
 	xxx, e1 := os.Getenv("DOES_NOT_EXIST");
 	if e1 != os.ENOENV {
 		print("$DOES_NOT_EXIST=", xxx, "; err = ", e1.String(), "\n");
-		sys.Exit(1);
+		os.Exit(1);
 	}
 }

test/fixedbugs/bug006.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 const (
 	x float = iota;
 	g float = 4.5 * iota;
@@ -13,5 +15,5 @@ const (
 
 func main() {
 	if g == 0.0 { print("zero\n");}
-	if g != 4.5 { print(" fail\n"); sys.Exit(1); }
+	if g != 4.5 { print(" fail\n"); os.Exit(1); }
 }

test/fixedbugs/bug059.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 func P(a []string) string {
 	s := "{";
 	for i := 0; i < 2; i++ {
@@ -29,6 +31,6 @@ func main() {
 	a[0] = "x";
 	m["0"][0] = "deleted";
 	if m["0"][0] != "deleted" {
-		sys.Exit(1);
+		os.Exit(1);
 	}
 }

test/fixedbugs/bug060.go

@@ -6,12 +6,14 @@
 
 package main
 
+import "os"
+
 func main() {
 	m := make(map[int]int);
 	m[0] = 0;
 	m[0]++;
 	if m[0] != 1 {
 		print("map does not increment\n");
-		sys.Exit(1)
+		os.Exit(1)
 	}
 }

test/fixedbugs/bug120.go

@@ -6,6 +6,7 @@
 
 package main
 
+import "os"
 import "strconv";
 
 type Test struct {
@@ -53,6 +54,6 @@ func main() {
 		}
 	}
 	if !ok {
-		sys.Exit(1);
+		os.Exit(1);
 	}
 }

test/fixedbugs/bug130.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 type I interface { send(chan <- int) }
 
 type S struct { v int }
@@ -16,5 +18,5 @@ func main() {
   var i I = &s;
   c := make(chan int);
   go i.send(c);
-  sys.Exit(<-c);
+  os.Exit(<-c);
 }

test/fixedbugs/bug141.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 type S struct { i int }
 func (p *S) Get() int { return p.i }
 
@@ -18,7 +20,7 @@ type Getter interface {
 
 func f1(p Empty) {
 	switch x := p.(type) {
-	default: println("failed to match interface"); sys.Exit(1);
+	default: println("failed to match interface"); os.Exit(1);
 	case Getter: break;
 	}
 

test/if1.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 func main() {
 	count := 7;
 	if one := 1; {
@@ -13,6 +15,6 @@ func main() {
 	}
 	if count != 8 {
 		print(count, " should be 8\n");
-		sys.Exit(1)
+		os.Exit(1)
 	}
 }

test/int_lit.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 func main() {
   s :=
     0 +
@@ -18,6 +20,6 @@ func main() {
     0X123;
   if s != 788 {
     print("s is ", s, "; should be 788\n");
-    sys.Exit(1);
+    os.Exit(1);
   }
 }

test/interface10.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 const Value = 1e12
 
 type Inter interface { M() int64 }
@@ -73,6 +75,6 @@ func main() {
 
 	if !ok {
 		println("BUG: interface10");
-		sys.Exit(1)
+		os.Exit(1)
 	}
 }

test/interface4.go

@@ -9,6 +9,8 @@
 
 package main
 
+import "os"
+
 type I interface { M() int64 }
 
 type BigPtr struct { a, b, c, d int64 }
@@ -70,6 +72,6 @@ func main() {
 	nonptrs();
 
 	if bad {
-		sys.Exit(1)
+		os.Exit(1)
 	}
 }

test/interface6.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 var fail int
 
 func check(b bool, msg string) {
@@ -145,6 +147,6 @@ func main() {
   f11();
   f12();
   if fail > 0 {
-    sys.Exit(1)
+    os.Exit(1)
   }
 }

test/ken/chan.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+import "runtime"
 
 var	randx	int;
 
@@ -88,7 +90,7 @@ send(c *Chan)
 	nproc++;	// total goroutines running
 	for {
 		for r:=nrand(10); r>=0; r-- {
-			sys.Gosched();
+			runtime.Gosched();
 		}
 		c.sc <- c.sv;
 		if c.send() {
@@ -119,7 +121,7 @@ recv(c *Chan)
 	nproc++;	// total goroutines running
 	for {
 		for r:=nrand(10); r>=0; r-- {
-			sys.Gosched();
+			runtime.Gosched();
 		}
 		v = <-c.rc;
 		if c.recv(v) {
@@ -148,7 +150,7 @@ sel(r0,r1,r2,r3, s0,s1,s2,s3 *Chan)
 
 	for {
 		for r:=nrand(5); r>=0; r-- {
-			sys.Gosched();
+			runtime.Gosched();
 		}
 
 		select {
@@ -270,9 +272,9 @@ test6(c int)
 func
 wait()
 {
-	sys.Gosched();
+	runtime.Gosched();
 	for nproc != 0 {
-		sys.Gosched();
+		runtime.Gosched();
 	}
 }
 
@@ -321,7 +323,7 @@ main()
 
 	if tots != t || totr != t {
 		print("tots=", tots, " totr=", totr, " sb=", t, "\n");
-		sys.Exit(1);
+		os.Exit(1);
 	}
-	sys.Exit(0);
+	os.Exit(0);
 }

test/ken/chan1.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "runtime"
+
 const	N	= 1000;		// sent messages
 const	M	= 10;		// receiving goroutines
 const	W	= 2;		// channel buffering
@@ -48,9 +50,9 @@ main()
 	c := make(chan int, W);
 	for m:=0; m<M; m++ {
 		go r(c, m);
-		sys.Gosched();
+		runtime.Gosched();
 	}
-	sys.Gosched();
-	sys.Gosched();
+	runtime.Gosched();
+	runtime.Gosched();
 	s(c);
 }

test/string_lit.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 var ecode int;
 
 func assert(a, b, c string) {
@@ -84,5 +86,5 @@ func main() {
 	r = 0x10ffff + 1;
 	s = string(r);
 	assert(s, "\xef\xbf\xbd", "too-large rune");
-	sys.Exit(ecode);
+	os.Exit(ecode);
 }

test/stringrange.go

@@ -8,6 +8,7 @@ package main
 
 import(
         "fmt";
+        "os";
         "utf8";
 )
 
@@ -56,6 +57,6 @@ func main() {
 
 	if !ok {
 		fmt.Println("BUG: stringrange");
-		sys.Exit(1)
+		os.Exit(1)
 	}
 }

test/switch1.go

@@ -6,13 +6,15 @@
 
 package main
 
+import "os"
+
 func main() {
 	i := 0;
 	switch x := 5; {
 		case i < x:
-			sys.Exit(0);
+			os.Exit(0);
 		case i == x:
 		case i > x:
-			sys.Exit(1);
+			os.Exit(1);
 	}
 }

test/typeswitch.go

@@ -6,6 +6,8 @@
 
 package main
 
+import "os"
+
 const (
 	Bool = iota;
 	Int;
@@ -31,7 +33,7 @@ var m = make(map[string]int)
 func assert(b bool, s string) {
 	if !b {
 		println(s);
-		sys.Exit(1);
+		os.Exit(1);
 	}
 }
 

usr/gri/pretty/godoc.go

@@ -641,7 +641,7 @@ func findPackages(name string) *pakInfo {
 				return info;
 			}
 		}
-		
+
 		info.Packages = paks;
 		if cname == "." {
 			info.Path = "";
@@ -704,7 +704,7 @@ func usage() {
 		"	godoc -http=:6060\n"
 	);
 	flag.PrintDefaults();
-	sys.Exit(1);
+	os.Exit(1);
 }
 
 
@@ -761,7 +761,7 @@ func main() {
 		if err != nil {
 			log.Stderrf("packagelistText.Execute: %s", err);
 		}
-		sys.Exit(1);
+		os.Exit(1);
 	}
 
 	doc, errors := info.Package.Doc();
@@ -770,7 +770,7 @@ func main() {
 		if err != nil {
 			log.Stderrf("parseerrorText.Execute: %s", err);
 		}
-		sys.Exit(1);
+		os.Exit(1);
 	}
 
 	if flag.NArg() > 1 {

usr/gri/pretty/pretty.go

@@ -41,7 +41,7 @@ func init() {
 func usage() {
 	fmt.Fprintf(os.Stderr, "usage: pretty { flags } { files }\n");
 	flag.PrintDefaults();
-	sys.Exit(1);
+	os.Exit(1);
 }
 
 
@@ -127,12 +127,12 @@ func main() {
 	src, err := readFile(ast_txt);
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "%s: %v\n", ast_txt, err);
-		sys.Exit(1);
+		os.Exit(1);
 	}
 	ast_format, err := format.Parse(src, format.FormatterMap{"isValidPos": isValidPos, "isSend": isSend, "isRecv": isRecv});
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "%s: format errors:\n%s", ast_txt, err);
-		sys.Exit(1);
+		os.Exit(1);
 	}
 
 	// process files
@@ -150,7 +150,7 @@ func main() {
 		prog, ok := parser.Parse(src, &ErrorHandler{filename, 0}, mode);
 		if !ok {
 			exitcode = 1;
-			continue;  // proceed with next file			
+			continue;  // proceed with next file
 		}
 
 		if !*silent {
@@ -165,6 +165,6 @@ func main() {
 			tw.Flush();
 		}
 	}
-	
-	sys.Exit(exitcode);
+
+	os.Exit(exitcode);
 }

usr/gri/pretty/untab.go

@@ -21,7 +21,7 @@ var (
 
 func error(format string, params ...) {
 	fmt.Printf(format, params);
-	sys.Exit(1);
+	os.Exit(1);
 }