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authorJon TURNEY <jon.turney@dronecode.org.uk>2015-04-04 18:12:27 +0300
committerJon TURNEY <jon.turney@dronecode.org.uk>2015-04-10 17:34:44 +0300
commit0bb27f15ec3db37c704b345f67f51c31dd608b06 (patch)
tree16b4debce2e26a4211ea54b2264189a2792e551c /winsup
parent0a0565d88173668e256a81a6a3dea337745d8256 (diff)
Set mcontext.cr2 to the faulting address
* exceptions.cc (call_signal_handler): Set mcontext.cr2 to the faulting address. Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Diffstat (limited to 'winsup')
-rw-r--r--winsup/cygwin/ChangeLog5
-rw-r--r--winsup/cygwin/exceptions.cc4
2 files changed, 9 insertions, 0 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index ec70f1a1f..6e71e610c 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2015-04-04 Jon TURNEY <jon.turney@dronecode.org.uk>
+
+ * exceptions.cc (call_signal_handler): Set mcontext.cr2 to the
+ faulting address.
+
2015-04-02 Jon TURNEY <jon.turney@dronecode.org.uk>
* exceptions.cc (call_signal_handler): Only bother to construct
diff --git a/winsup/cygwin/exceptions.cc b/winsup/cygwin/exceptions.cc
index 0c9ee1459..4a6c21e7c 100644
--- a/winsup/cygwin/exceptions.cc
+++ b/winsup/cygwin/exceptions.cc
@@ -1521,6 +1521,10 @@ _cygtls::call_signal_handler ()
context.uc_sigmask = context.uc_mcontext.oldmask = this_oldmask;
+ context.uc_mcontext.cr2 = (thissi.si_signo == SIGSEGV
+ || thissi.si_signo == SIGBUS)
+ ? (uintptr_t) thissi.si_addr : 0;
+
thiscontext = &context;
}