kernel-ark/arch/um/os-Linux/trap.c
Jeff Dike 0e8cd28a08 [PATCH] uml: comment the initialization of a global
Comment the fact that sig_info is initialized early in boot, and thus doesn't
need any locking.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-06 09:30:26 -08:00

42 lines
931 B
C

/*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdlib.h>
#include <signal.h>
#include "kern_util.h"
#include "user_util.h"
#include "os.h"
#include "mode.h"
#include "longjmp.h"
void usr2_handler(int sig, union uml_pt_regs *regs)
{
CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
}
/* Initialized from linux_main() */
void (*sig_info[NSIG])(int, union uml_pt_regs *);
void os_fill_handlinfo(struct kern_handlers h)
{
sig_info[SIGTRAP] = h.relay_signal;
sig_info[SIGFPE] = h.relay_signal;
sig_info[SIGILL] = h.relay_signal;
sig_info[SIGWINCH] = h.winch;
sig_info[SIGBUS] = h.bus_handler;
sig_info[SIGSEGV] = h.page_fault;
sig_info[SIGIO] = h.sigio_handler;
sig_info[SIGVTALRM] = h.timer_handler;
sig_info[SIGALRM] = h.timer_handler;
sig_info[SIGUSR2] = usr2_handler;
}
void do_longjmp(void *b, int val)
{
jmp_buf *buf = b;
UML_LONGJMP(buf, val);
}