Add stack frame support. Architectures are now responsible

for decoding closures.  There is now no notion of a current OS
thread, though that needs to come back in the form of a
current Go thread.  As a result, Process now implements Peek
and Poke and maps them to any stopped OS thread, since they
all share the address space anyways.

R=rsc
APPROVED=rsc
DELTA=322  (310 added, 3 deleted, 9 changed)
OCL=34136
CL=34201

1 files changed, 27 insertions, 2 deletions

diff --git a/usr/austin/ogle/rruntime.go b/usr/austin/ogle/rruntime.go
index 685cc95a7..e0a654691 100644
--- a/usr/austin/ogle/rruntime.go
+++ b/usr/austin/ogle/rruntime.go
@@ -123,10 +123,28 @@ type rt1Gobuf struct {
 }
 
 type rt1G struct {
-	stackguard uintptr;
+	// Fields beginning with _ are only for padding
+	_stackguard uintptr;
 	stackbase *rt1Stktop;
+	_defer uintptr;
+	sched rt1Gobuf;
+	_stack0 uintptr;
+	_entry uintptr;
+	alllink *rt1G;
+	_param uintptr;
+	status int16;
 }
 
+var rt1GStatus = runtimeGStatus{
+	Gidle: 0,
+	Grunnable: 1,
+	Grunning: 2,
+	Gsyscall: 3,
+	Gwaiting: 4,
+	Gmoribund: 5,
+	Gdead: 6,
+};
+
 // runtimeIndexes stores the indexes of fields in the runtime
 // structures.  It is filled in using reflection, so the name of the
 // fields must match the names of the remoteType's in runtimeValues
@@ -175,10 +193,15 @@ type runtimeIndexes struct {
 		Sp, Pc, G int;
 	};
 	G struct {
-		Stackguard, Stackbase int;
+		Stackbase, Sched, Status int;
 	};
 }
 
+// Values of G status codes
+type runtimeGStatus struct {
+	Gidle, Grunnable, Grunning, Gsyscall, Gwaiting, Gmoribund, Gdead int64;
+}
+
 // runtimeValues stores the types and values that correspond to those
 // in the remote runtime package.
 type runtimeValues struct {
@@ -200,6 +223,8 @@ type runtimeValues struct {
 	PArrayType, PStringType, PStructType, PPtrType, PFuncType,
 	PInterfaceType, PSliceType, PMapType, PChanType,
 	PDotDotDotType, PUnsafePointerType ptrace.Word;
+	// G status values
+	runtimeGStatus;
 }
 
 // fillRuntimeIndexes fills a runtimeIndexes structure will the field