Hi Yuri, On Sat, Oct 11, 2008 at 05:41:09PM -0700, Yuri wrote: > Is there a way to access from signal handler CPU registers as they > were before signal, modify some of them, clear the signal and > continue from the instruction that caused SEGV initially?
Maybe you can have a look to the development version of the
Enlightenment window manager [1]. It catches segfaults and displayed a
window to ask the user what to do (continue, abort). I experienced a
few crashes where this helpful window was triggered a dozen times, I
asked the window manager to continue and could save my work before
everything crashed.
First moves in the svn repository [2] (basically grep SEGV):
| ./src/bin/e_exec.c:456: else if (cfdata->event.exit_signal == SIGSEGV)
| ./src/bin/e_desklock.c:689: sigaction(SIGSEGV, &action, NULL);
| ./src/bin/e_object.c:153: sigaction(SIGSEGV, &act, &oact);
| ./src/bin/e_object.c:158: sigaction(SIGSEGV, &oact, NULL);
| ./src/bin/e_object.c:168: sigaction(SIGSEGV, &oact, NULL);
| ./src/bin/e_signals.c:28: e_alert_show("This is very bad. Enlightenment
SEGV'd.\n"
| ./src/bin/e_signals.c:48: e_alert_show("This is very bad. Enlightenment
SEGV'd.\n"
| ./src/bin/e_main.c:99: sigaction(SIGSEGV, &action, NULL);
| ./src/bin/e_main.c:322:// FIXME: SEGV's on shutdown if fm2 windows up -
disable for now.
Hope that helps!
Romain
References:
1. http://enlightenment.org/
2. http://svn.enlightenment.org/svn/e/trunk/e/
--
Romain Tartière <[EMAIL PROTECTED]> http://romain.blogreen.org/
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