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go/ssa/interp: fix fallout from recent runtime refactoring.

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(It's not clear at what point a more robust solution would be worthwhile.)

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/142700043
This commit is contained in:
Alan Donovan 2014-09-25 17:14:39 -04:00
parent 315249fc55
commit c80e5833f9
2 changed files with 25 additions and 21 deletions
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15
go/ssa/interp/external.go
View File

@ -78,6 +78,7 @@ func init() {
"math.Ldexp": ext۰math۰Ldexp,
"math.Log": ext۰math۰Log,
"math.Min": ext۰math۰Min,
"os.runtime_args": ext۰os۰runtime_args,
"reflect.New": ext۰reflect۰New,
"reflect.TypeOf": ext۰reflect۰TypeOf,
"reflect.ValueOf": ext۰reflect۰ValueOf,
@ -127,6 +128,7 @@ func init() {
"syscall.ReadDirent": ext۰syscall۰ReadDirent,
"syscall.Stat": ext۰syscall۰Stat,
"syscall.Write": ext۰syscall۰Write,
"syscall.runtime_envs": ext۰runtime۰environ,
"time.Sleep": ext۰time۰Sleep,
"time.now": ext۰time۰now,
}
@ -221,6 +223,10 @@ func ext۰math۰Log(fr *frame, args []value) value {
return math.Log(args[0].(float64))
}
func ext۰os۰runtime_args(fr *frame, args []value) value {
return fr.i.osArgs
}
func ext۰runtime۰Breakpoint(fr *frame, args []value) value {
runtime.Breakpoint()
return nil
@ -281,13 +287,8 @@ func ext۰runtime۰FuncForPC(fr *frame, args []value) value {
}
func ext۰runtime۰environ(fr *frame, args []value) value {
// We don't return syscall.envs (see Interpret()) because it's
// not a dependency of runtime so the package might not exist.
var env []value
for _, s := range os.Environ() {
env = append(env, s)
}
return env
// This function also implements syscall.runtime_envs.
return environ
}
func ext۰runtime۰getgoroot(fr *frame, args []value) value {

31
go/ssa/interp/interp.go
View File

@ -75,6 +75,7 @@ type methodSet map[string]*ssa.Function
// State shared between all interpreted goroutines.
type interpreter struct {
osArgs []value // the value of os.Args
prog *ssa.Program // the SSA program
globals map[ssa.Value]*value // addresses of global variables (immutable)
mode Mode // interpreter options
@ -620,6 +621,16 @@ func setGlobal(i *interpreter, pkg *ssa.Package, name string, v value) {
panic("no global variable: " + pkg.Object.Path() + "." + name)
}
var environ []value
func init() {
for _, s := range os.Environ() {
environ = append(environ, s)
}
environ = append(environ, "GOSSAINTERP=1")
environ = append(environ, "GOARCH="+runtime.GOARCH)
}
// Interpret interprets the Go program whose main package is mainpkg.
// mode specifies various interpreter options. filename and args are
// the initial values of os.Args for the target program. sizes is the
@ -645,6 +656,11 @@ func Interpret(mainpkg *ssa.Package, mode Mode, sizes types.Sizes, filename stri
initReflect(i)
i.osArgs = append(i.osArgs, filename)
for _, arg := range args {
i.osArgs = append(i.osArgs, arg)
}
for _, pkg := range i.prog.AllPackages() {
// Initialize global storage.
for _, m := range pkg.Members {
@ -658,13 +674,7 @@ func Interpret(mainpkg *ssa.Package, mode Mode, sizes types.Sizes, filename stri
// Ad-hoc initialization for magic system variables.
switch pkg.Object.Path() {
case "syscall":
var envs []value
for _, s := range os.Environ() {
envs = append(envs, s)
}
envs = append(envs, "GOSSAINTERP=1")
envs = append(envs, "GOARCH="+runtime.GOARCH)
setGlobal(i, pkg, "envs", envs)
setGlobal(i, pkg, "envs", environ)
case "runtime":
sz := sizes.Sizeof(pkg.Object.Scope().Lookup("MemStats").Type())
@ -682,13 +692,6 @@ func Interpret(mainpkg *ssa.Package, mode Mode, sizes types.Sizes, filename stri
}
}
}
case "os":
Args := []value{filename}
for _, s := range args {
Args = append(Args, s)
}
setGlobal(i, pkg, "Args", Args)
}
}