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runtime: add GOOS, GOARCH; fix FuncLine

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Changes to FuncLine sync it with symtab.c's funcline.

R=r
CC=girard.m1, golang-dev
https://golang.org/cl/2083041
This commit is contained in:
Russ Cox 2010-09-02 14:19:12 -04:00
parent dea283750b
commit 4e64555894
2 changed files with 25 additions and 9 deletions
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28
src/pkg/runtime/extern.go
View file

@ -66,13 +66,17 @@ func (f *Func) Entry() uintptr { return f.entry }
func (f *Func) FileLine(pc uintptr) (file string, line int) {
// NOTE(rsc): If you edit this function, also edit
// symtab.c:/^funcline.
const PcQuant = 1
var pcQuant uintptr = 1
if GOARCH == "arm" {
pcQuant = 4
}
targetpc := pc
p := f.pcln
pc1 := f.pc0
pc = f.pc0
line = int(f.ln0)
file = f.src
for i := 0; i < len(p) && pc1 <= pc; i++ {
for i := 0; i < len(p) && pc <= targetpc; i++ {
switch {
case p[i] == 0:
line += int(p[i+1]<<24) | int(p[i+2]<<16) | int(p[i+3]<<8) | int(p[i+4])
@ -80,11 +84,11 @@ func (f *Func) FileLine(pc uintptr) (file string, line int) {
case p[i] <= 64:
line += int(p[i])
case p[i] <= 128:
line += int(p[i] - 64)
line -= int(p[i] - 64)
default:
line += PcQuant * int(p[i]-129)
pc += pcQuant * uintptr(p[i]-129)
}
pc += PcQuant
pc += pcQuant
}
return
}
@ -165,4 +169,14 @@ func GOROOT() string {
// a release tag like "release.2010-03-04".
// A trailing + indicates that the tree had local modifications
// at the time of the build.
func Version() string { return defaultVersion }
func Version() string {
return theVersion
}
// GOOS is the Go tree's operating system target:
// one of darwin, freebsd, linux, and so on.
const GOOS string = theGoos
// GOARCH is the Go tree's architecture target:
// 386, amd64, or arm.
const GOARCH string = theGoarch

6
src/pkg/runtime/mkversion.c
View file

@ -5,11 +5,13 @@ char *template =
"// generated by mkversion.c; do not edit.\n"
"package runtime\n"
"const defaultGoroot = \"%s\"\n"
"const defaultVersion = \"%s\"\n";
"const theVersion = \"%s\"\n"
"const theGoarch = \"%s\"\n"
"const theGoos = \"%s\"\n";
void
main(void)
{
print(template, getgoroot(), getgoversion());
print(template, getgoroot(), getgoversion(), getgoarch(), getgoos());
exits(0);
}