1 files changed, 30 insertions, 0 deletions
diff --git a/arch/um/sys-i386/stub_segv.c b/arch/um/sys-i386/stub_segv.c
new file mode 100644
index 000000000000..68aeabe3a654
--- /dev/null
+++ b/arch/um/sys-i386/stub_segv.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
+#include <signal.h>
+#include <asm/sigcontext.h>
+#include <asm/unistd.h>
+#include "uml-config.h"
+#include "sysdep/sigcontext.h"
+#include "sysdep/faultinfo.h"
+
+void __attribute__ ((__section__ (".__syscall_stub")))
+stub_segv_handler(int sig)
+{
+	struct sigcontext *sc = (struct sigcontext *) (&sig + 1);
+
+	GET_FAULTINFO_FROM_SC(*((struct faultinfo *) UML_CONFIG_STUB_DATA),
+			      sc);
+
+	__asm__("movl %0, %%eax ; int $0x80": : "g" (__NR_getpid));
+	__asm__("movl %%eax, %%ebx ; movl %0, %%eax ; movl %1, %%ecx ;"
+		"int $0x80": : "g" (__NR_kill), "g" (SIGUSR1));
+	/* Load pointer to sigcontext into esp, since we need to leave
+	 * the stack in its original form when we do the sigreturn here, by
+	 * hand.
+	 */
+	__asm__("mov %0,%%esp ; movl %1, %%eax ; "
+		"int $0x80" : : "a" (sc), "g" (__NR_sigreturn));
+}