MIPS: Enable the V8 profiler on MIPS.

src/platform-linux.cc

Index: src/platform-linux.cc
diff --git a/src/platform-linux.cc b/src/platform-linux.cc
index 90f45dd163a22efc39e9a45d13bc70a91f892edc..ebd3a682d7f8da0b73dd2d2595ef70cdcd912239 100644
--- a/src/platform-linux.cc
+++ b/src/platform-linux.cc
@@ -964,7 +964,6 @@ static int GetThreadID() {
 
 
 static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
-#ifndef V8_HOST_ARCH_MIPS
   USE(info);
   if (signal != SIGPROF) return;
   Isolate* isolate = Isolate::UncheckedCurrent();
@@ -1008,13 +1007,12 @@ static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
   sample->fp = reinterpret_cast<Address>(mcontext.arm_fp);
 #endif
 #elif V8_HOST_ARCH_MIPS

[mnaganov (inactive), 2011/11/09 11:26:22]

Does it compile at all? Looks simply incorrect as #elif hangs alone w/o #if

[Yang, 2011/11/09 11:36:05]

I think this #elif refers to the #if V8_HOST_ARCH_IA32 in line 990. 

[mnaganov (inactive), 2011/11/09 11:49:42]

Ah, that's right. I'd recommend adding a comment like "// __GLIBC__ version
check" to the #endif above to avoid confusion.

-  sample.pc = reinterpret_cast<Address>(mcontext.pc);
-  sample.sp = reinterpret_cast<Address>(mcontext.gregs[29]);
-  sample.fp = reinterpret_cast<Address>(mcontext.gregs[30]);
+  sample->pc = reinterpret_cast<Address>(mcontext.pc);
+  sample->sp = reinterpret_cast<Address>(mcontext.gregs[29]);
+  sample->fp = reinterpret_cast<Address>(mcontext.gregs[30]);
 #endif
   sampler->SampleStack(sample);
   sampler->Tick(sample);
-#endif
 }