no need for compiler to hard-code definition of runtime.

use the actual go source instead.

R=r
DELTA=90  (66 added, 18 deleted, 6 changed)
OCL=28708
CL=28719

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 runtime.go mkbuiltin1.c mkbuiltin
+builtin.c:	sys.go unsafe.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

@@ -67,11 +67,3 @@ 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

@@ -540,7 +540,6 @@ 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

@@ -265,10 +265,6 @@ 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

@@ -6,7 +6,7 @@
 set -e
 gcc -o mkbuiltin1 mkbuiltin1.c
 rm -f _builtin.c
-for i in sys unsafe runtime
+for i in sys unsafe
 do
 	6g $i.go
 	./mkbuiltin1 $i >>_builtin.c

src/cmd/gc/runtime.go

@@ -1,9 +0,0 @@
-// 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/lib/Makefile

@@ -116,11 +116,11 @@ bufio.install: io.install os.install
 exec.install: os.install strings.install
 exvar.install: fmt.install http.install log.install strconv.install sync.install
 flag.install: fmt.install os.install strconv.install
-log.install: fmt.install io.install os.install time.install
+log.install: fmt.install io.install os.install runtime.install time.install
 path.install: io.install
 once.install: sync.install
 strings.install: utf8.install
-testing.install: flag.install fmt.install
+testing.install: flag.install fmt.install runtime.install
 
 fmt.install: io.install reflect.install strconv.install
 GODEPS=fmt.install io.install once.install regexp.install sort.install \
@@ -142,13 +142,13 @@ json.install: container/vector.install fmt.install io.install math.install \
 # TODO(rsc): net is not supposed to depend on fmt or strings or strconv
 net.install: fmt.install once.install os.install strconv.install strings.install
 os.install: syscall.install once.install
-regexp.install: os.install
+regexp.install: os.install runtime.install
 reflect.install: strconv.install sync.install
 strconv.install: math.install os.install utf8.install
 sync.install:
 syscall.install: sync.install
 tabwriter.install: os.install io.install container/vector.install
-template.install: container/vector.install fmt.install io.install os.install reflect.install strings.install
+template.install: container/vector.install fmt.install io.install os.install reflect.install runtime.install strings.install
 time.install: once.install os.install io.install
 
 	once.install os.install sort.install strings.install sync.install template.install time.install \

src/lib/runtime/Makefile

@@ -0,0 +1,68 @@
+# 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.
+
+# DO NOT EDIT.  Automatically generated by gobuild.
+# gobuild -m >Makefile
+
+D=
+
+O_arm=5
+O_amd64=6
+O_386=8
+OS=568vq
+
+O=$(O_$(GOARCH))
+GC=$(O)g -I_obj
+CC=$(O)c -FVw
+AS=$(O)a
+AR=6ar
+
+default: packages
+
+clean:
+	rm -rf *.[$(OS)] *.a [$(OS)].out _obj
+
+test: packages
+	gotest
+
+coverage: packages
+	gotest
+	6cov -g `pwd` | grep -v '_test\.go:'
+
+%.$O: %.go
+	$(GC) $*.go
+
+%.$O: %.c
+	$(CC) $*.c
+
+%.$O: %.s
+	$(AS) $*.s
+
+O1=\
+	runtime.$O\
+
+
+phases: a1
+_obj$D/runtime.a: phases
+
+a1: $(O1)
+	$(AR) grc _obj$D/runtime.a runtime.$O
+	rm -f $(O1)
+
+
+newpkg: clean
+	mkdir -p _obj$D
+	$(AR) grc _obj$D/runtime.a
+
+$(O1): newpkg
+$(O2): a1
+
+nuke: clean
+	rm -f $(GOROOT)/pkg$D/runtime.a
+
+packages: _obj$D/runtime.a
+
+install: packages
+	test -d $(GOROOT)/pkg && mkdir -p $(GOROOT)/pkg$D
+	cp _obj$D/runtime.a $(GOROOT)/pkg$D/runtime.a

src/lib/runtime/runtime.go

@@ -8,6 +8,8 @@
  */
 package runtime
 
+// These functions are implemented in the base runtime library, ../../runtime/.
+
 // Gosched yields the processor, allowing other goroutines to run.  It does not
 // suspend the current goroutine, so execution resumes automatically.
 func	Gosched()