Add DarwinThreadHelpers.*

stepmania/src/archutils/Darwin/DarwinThreadHelpers.cpp

@@ -0,0 +1,34 @@
+#include <mach/mach_types.h>
+#include <mach/thread_act.h>
+#include <mach/mach_init.h>
+#include "Backtrace.h"
+
+bool SuspendThread(uint64_t threadHandle)
+{
+	return !thread_suspend(thread_act_t(threadHandle));
+}
+
+bool ResumeThread(uint64_t threadHandle)
+{
+	return !thread_resume(thread_act_t(threadHandle));
+}
+
+uint64_t GetCurrentThreadId()
+{
+	return mach_thread_self();
+}
+
+bool GetThreadBacktraceContext(int iCrashHandle, BacktraceContext *ctx)
+{
+	thread_act_t thread = thread_act_t(iCrashHandle);
+	ppc_thread_state state;
+	mach_msg_type_number_t count = PPC_THREAD_STATE_COUNT;
+	
+	if (thread_get_state(thread, PPC_THREAD_STATE, thread_state_t(&state),
+						 &count))
+		return false;
+	ctx->FramePtr = (void *)state.r1;
+	ctx->PC = (void *)state.srr0;
+	return true;
+}
+	

stepmania/src/archutils/Darwin/DarwinThreadHelpers.h

@@ -0,0 +1,8 @@
+#ifndef DARWIN_THREAD_HELPERS_H
+#define DARWIN_THREAD_HELPERS_H
+
+bool SuspendThread(uint64_t threadHandle);
+bool ResumeThread(uint64_t threadHandle);
+uint64_t GetCurrentThreadId();
+
+#endif