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-rw-r--r--gcc/ada/init.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/gcc/ada/init.c b/gcc/ada/init.c
index 8d2f4e1..b6d6e6a 100644
--- a/gcc/ada/init.c
+++ b/gcc/ada/init.c
@@ -2282,11 +2282,12 @@ __gnat_is_stack_guard (mach_vm_address_t addr)
return 0;
}
-static void
-__gnat_error_handler (int sig, siginfo_t *si, void *ucontext ATTRIBUTE_UNUSED)
+#define HAVE_GNAT_ADJUST_CONTEXT_FOR_RAISE
+
+void
+__gnat_adjust_context_for_raise (int signo ATTRIBUTE_UNUSED,
+ void *ucontext ATTRIBUTE_UNUSED)
{
- struct Exception_Data *exception;
- const char *msg;
#if defined (__x86_64__)
/* Work around radar #10302855/pr50678, where the unwinders (libunwind or
libgcc_s depending on the system revision) and the DWARF unwind data for
@@ -2294,9 +2295,19 @@ __gnat_error_handler (int sig, siginfo_t *si, void *ucontext ATTRIBUTE_UNUSED)
and rdx to be transposed).. */
ucontext_t *uc = (ucontext_t *)ucontext ;
unsigned long t = uc->uc_mcontext->__ss.__rbx;
+
uc->uc_mcontext->__ss.__rbx = uc->uc_mcontext->__ss.__rdx;
uc->uc_mcontext->__ss.__rdx = t;
#endif
+}
+
+static void
+__gnat_error_handler (int sig, siginfo_t *si, void *ucontext)
+{
+ struct Exception_Data *exception;
+ const char *msg;
+
+ __gnat_adjust_context_for_raise (sig, ucontext);
switch (sig)
{