Am 12.08.2008 um 12:54 schrieb Ingo Weinhold:
On 2008-08-12 at 01:37:49 [+0200], Andreas Färber <andreas.faerber@xxxxxx >wrote:Attached is a patch which attempts to add support for POSIX-style signal handlers that provide extended information on the signal and context. [...]This is still work in progress, I'm posting it to check whether I'm onthe right track there. I've tested it in a gcc4 image with ftp andvim. Not yet tested with the signal test apps, not in a gcc2 image and not the new code path. I have however checked (via panic) that the newcodepath was not taken by accident.Looks good so far.
Good to hear, thanks.
What is still missing is a lot of info in the siginfo_t struct, which isn't currently available (new SA_SIGINFO code path only). I was thinking we could use the siginfo_t as argument to arch_setup_signal_frame maybe, to get at that data.That wouldn't help, since some info simply isn't available (like the sender). We'd have to add realtime signal support to get those.
I was hoping more to get at the signal code (i.e. SEGV_ACCERR for SIGSEGV) and the address where the SIGSEGV occurred. At least the latter should be available, so would you prefer additional, e.g., uint32 arguments over a single siginfo_t? I don't see another way currently.
Andreas
