1 files changed, 60 insertions, 0 deletions
diff --git a/arch/um/kernel/tt/trap_user.c b/arch/um/kernel/tt/trap_user.c
new file mode 100644
index 000000000000..92a3820ca543
--- /dev/null
+++ b/arch/um/kernel/tt/trap_user.c
@@ -0,0 +1,60 @@
+/* 
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <signal.h>
+#include "sysdep/ptrace.h"
+#include "signal_user.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "task.h"
+#include "tt.h"
+
+void sig_handler_common_tt(int sig, void *sc_ptr)
+{
+	struct sigcontext *sc = sc_ptr;
+	struct tt_regs save_regs, *r;
+	struct signal_info *info;
+	int save_errno = errno, is_user;
+
+	/* This is done because to allow SIGSEGV to be delivered inside a SEGV
+	 * handler.  This can happen in copy_user, and if SEGV is disabled,
+	 * the process will die.
+	 */
+	if(sig == SIGSEGV)
+		change_sig(SIGSEGV, 1);
+
+	r = &TASK_REGS(get_current())->tt;
+	save_regs = *r;
+	is_user = user_context(SC_SP(sc));
+	r->sc = sc;
+	if(sig != SIGUSR2) 
+		r->syscall = -1;
+
+	info = &sig_info[sig];
+	if(!info->is_irq) unblock_signals();
+
+	(*info->handler)(sig, (union uml_pt_regs *) r);
+
+	if(is_user){
+		interrupt_end();
+		block_signals();
+		set_user_mode(NULL);
+	}
+	*r = save_regs;
+	errno = save_errno;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */