code review 132960044: runtime: changes to g->atomicstatus (nee status) to sup...

src/pkg/runtime/traceback_arm.c

 // 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.
 
 #include "runtime.h"
 #include "arch_GOARCH.h"
 #include "malloc.h"
 #include "funcdata.h"
 
 void runtime·sigpanic(void);
@@ skipping 308 matching lines @@
                 if(pc > f->entry)
                         runtime·printf(" +%p", (uintptr)(pc - f->entry));
                 runtime·printf("\n");
         }
 }
 
 void
 runtime·traceback(uintptr pc, uintptr sp, uintptr lr, G *gp)
 {
         int32 n;
-        uint32 status;
-
-        status = runtime·readgstatus(gp);
-        if(status == Gsyscall || status == Gscansyscall) {
+
+        if((runtime·readgstatus(gp)&~Gscan) == Gsyscall){
                 // Override signal registers if blocked in system call.
                 pc = gp->syscallpc;
                 sp = gp->syscallsp;
                 lr = 0;
         }
 
         // Print traceback. By default, omits runtime frames.
         // If that means we print nothing at all, repeat forcing all frames printed.
         n = runtime·gentraceback(pc, sp, lr, gp, 0, nil, TracebackMaxFrames, nil, nil, false);
         if(n == 0)
@@ skipping 13 matching lines @@
         pc = (uintptr)runtime·getcallerpc(&skip);
 
         return runtime·gentraceback(pc, sp, 0, g, skip, pcbuf, m, nil, nil, false);
 }
 
 int32
 runtime·gcallers(G *gp, int32 skip, uintptr *pcbuf, int32 m)
 {
         return runtime·gentraceback(~(uintptr)0, ~(uintptr)0, 0, gp, skip, pcbuf, m, nil, nil, false);
 }