arch/um/os-Linux/trap.c

   1 /*
   2  * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #include <stdlib.h>
   7 #include <signal.h>
   8 #include "kern_util.h"
   9 #include "user_util.h"
  10 #include "os.h"
  11 #include "mode.h"
  12 #include "longjmp.h"
  13
  14 void usr2_handler(int sig, union uml_pt_regs *regs)
  15 {
  16         CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
  17 }
  18
  19 /* Initialized from linux_main() */
  20 void (*sig_info[NSIG])(int, union uml_pt_regs *);
  21
  22 void os_fill_handlinfo(struct kern_handlers h)
  23 {
  24         sig_info[SIGTRAP] = h.relay_signal;
  25         sig_info[SIGFPE] = h.relay_signal;
  26         sig_info[SIGILL] = h.relay_signal;
  27         sig_info[SIGWINCH] = h.winch;
  28         sig_info[SIGBUS] = h.bus_handler;
  29         sig_info[SIGSEGV] = h.page_fault;
  30         sig_info[SIGIO] = h.sigio_handler;
  31         sig_info[SIGVTALRM] = h.timer_handler;
  32         sig_info[SIGALRM] = h.timer_handler;
  33         sig_info[SIGUSR2] = usr2_handler;
  34 }
  35
  36 void do_longjmp(void *b, int val)
  37 {
  38         jmp_buf *buf = b;
  39
  40         UML_LONGJMP(buf, val);
  41 }