1/*
2 * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
3 * Licensed under the GPL
4 */
5
6#include <signal.h>
7#include <sys/select.h> /* The only way I can see to get sigset_t */
8#include <asm/unistd.h>
9#include "uml-config.h"
10#include "sysdep/stub.h"
11#include "sysdep/sigcontext.h"
12#include "sysdep/faultinfo.h"
13
14void __attribute__ ((__section__ (".__syscall_stub")))
15stub_segv_handler(int sig)
16{
17	struct sigcontext *sc = (struct sigcontext *) (&sig + 1);
18	int pid;
19
20	GET_FAULTINFO_FROM_SC(*((struct faultinfo *) UML_CONFIG_STUB_DATA),
21			      sc);
22
23	pid = stub_syscall0(__NR_getpid);
24	stub_syscall2(__NR_kill, pid, SIGUSR1);
25
26	/* Load pointer to sigcontext into esp, since we need to leave
27	 * the stack in its original form when we do the sigreturn here, by
28	 * hand.
29	 */
30	__asm__ __volatile__("mov %0,%%esp ; movl %1, %%eax ; "
31			     "int $0x80" : : "a" (sc), "g" (__NR_sigreturn));
32}
33