#include "sysdep/ptrace_user.h"
#include "os.h"
+static union uml_pt_regs ksig_regs[UM_NR_CPUS];
+
void sig_handler_common_skas(int sig, void *sc_ptr)
{
struct sigcontext *sc = sc_ptr;
* the process will die.
* XXX Figure out why this is better than SA_NODEFER
*/
- if(sig == SIGSEGV)
+ if(sig == SIGSEGV) {
change_sig(SIGSEGV, 1);
+ /* For segfaults, we want the data from the
+ * sigcontext. In this case, we don't want to mangle
+ * the process registers, so use a static set of
+ * registers. For other signals, the process
+ * registers are OK.
+ */
+ r = &ksig_regs[cpu()];
+ copy_sc(r, sc_ptr);
+ }
+ else r = TASK_REGS(get_current());
- r = TASK_REGS(get_current());
save_user = r->skas.is_user;
r->skas.is_user = 0;
if ( sig == SIGFPE || sig == SIGSEGV ||
errno = save_errno;
r->skas.is_user = save_user;
}
-
-extern int ptrace_faultinfo;
-
-void user_signal(int sig, union uml_pt_regs *regs, int pid)
-{
- void (*handler)(int, union uml_pt_regs *);
- int segv = ((sig == SIGFPE) || (sig == SIGSEGV) || (sig == SIGBUS) ||
- (sig == SIGILL) || (sig == SIGTRAP));
-
- if (segv)
- get_skas_faultinfo(pid, ®s->skas.faultinfo);
-
- handler = sig_info[sig];
- handler(sig, (union uml_pt_regs *) regs);
-
- unblock_signals();
-}