Re: solaris gdb screen mayhem

From: wwieserat_private
Date: Fri Aug 31 2001 - 04:45:33 PDT

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On Wednesday 29 August 2001 23:51, you wrote:
>    Execution on a non-executable stack gets a SEGV.   Is there a way
>    the program can distinguish this from any other SEGV ?
>
Read the manual for sigaction(2). 
Use the signal handler void (*sa_sigaction)(int, siginfo_t *, void *);
(you will have to set SA_SIGINFO in sa_flags). 

Now, in the signal handler routine, analyze siginfo_t: 
si_code will show you if SIGSEGV/BUS was generated by kill(2) or kill(1) 
or by the kernel. You even get the address causing the fault in 
si_addr. 

The stuff seems to be POSIX.1b so I guess solaris implements it. 

wwieser

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