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Re: [RFC]: MD_FALLBACK_FRAME_STATE_FOR macro for darwin PPC



On 20/01/2004, at 12:37 PM, Andreas Tobler wrote:


So, the question is, how do I check inside darwin.h which OS version I have?

You check with code like this:


+    if (*(unsigned int *) (pc_ + 0) != 0x2e1e0032)			\
+      break;								\
+    if (*(unsigned int *) (pc_ + 4) == 0x40be0050			\
+	|| *(unsigned int *) (pc_ + 4) == 0x41920010)			\

You should make enough tests to make sure that you don't falsely identify any darwin version (past or future), by checking every instruction that would have been executed on a return from a signal handler.



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