--- deps/v8/src/libsampler/sampler.cc.orig	2019-08-06 20:46:24 UTC
+++ deps/v8/src/libsampler/sampler.cc
@@ -470,9 +470,13 @@ void SignalHandler::FillRegisterState(void* context, R
   state->sp = reinterpret_cast<void*>(mcontext.mc_rsp);
   state->fp = reinterpret_cast<void*>(mcontext.mc_rbp);
 #elif V8_HOST_ARCH_ARM
-  state->pc = reinterpret_cast<void*>(mcontext.mc_r15);
-  state->sp = reinterpret_cast<void*>(mcontext.mc_r13);
-  state->fp = reinterpret_cast<void*>(mcontext.mc_r11);
+  state->pc = reinterpret_cast<void*>(mcontext.__gregs[_REG_PC]);
+  state->sp = reinterpret_cast<void*>(mcontext.__gregs[_REG_SP]);
+  state->fp = reinterpret_cast<void*>(mcontext.__gregs[_REG_FP]);
+#elif V8_TARGET_ARCH_PPC_BE
+  state->pc = reinterpret_cast<void*>(mcontext.mc_srr0);
+  state->sp = reinterpret_cast<void*>(mcontext.mc_frame[1]);
+  state->fp = reinterpret_cast<void*>(mcontext.mc_frame[31]);
 #endif  // V8_HOST_ARCH_*
 #elif V8_OS_NETBSD
 #if V8_HOST_ARCH_IA32