| /* |
| * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| #include <sys/time.h> |
| #include <sys/wait.h> |
| #include <asm/page.h> |
| #include <asm/unistd.h> |
| #include <asm/ptrace.h> |
| #include "init.h" |
| #include "sysdep/ptrace.h" |
| #include "sigcontext.h" |
| #include "sysdep/sigcontext.h" |
| #include "irq_user.h" |
| #include "signal_user.h" |
| #include "time_user.h" |
| #include "task.h" |
| #include "mode.h" |
| #include "choose-mode.h" |
| #include "kern_util.h" |
| #include "user_util.h" |
| #include "os.h" |
| |
| void kill_child_dead(int pid) |
| { |
| kill(pid, SIGKILL); |
| kill(pid, SIGCONT); |
| do { |
| int n; |
| CATCH_EINTR(n = waitpid(pid, NULL, 0)); |
| if (n > 0) |
| kill(pid, SIGCONT); |
| else |
| break; |
| } while(1); |
| } |
| |
| void segv_handler(int sig, union uml_pt_regs *regs) |
| { |
| struct faultinfo * fi = UPT_FAULTINFO(regs); |
| |
| if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){ |
| bad_segv(*fi, UPT_IP(regs)); |
| return; |
| } |
| segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs); |
| } |
| |
| void usr2_handler(int sig, union uml_pt_regs *regs) |
| { |
| CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0); |
| } |
| |
| struct signal_info sig_info[] = { |
| [ SIGTRAP ] { .handler = relay_signal, |
| .is_irq = 0 }, |
| [ SIGFPE ] { .handler = relay_signal, |
| .is_irq = 0 }, |
| [ SIGILL ] { .handler = relay_signal, |
| .is_irq = 0 }, |
| [ SIGWINCH ] { .handler = winch, |
| .is_irq = 1 }, |
| [ SIGBUS ] { .handler = bus_handler, |
| .is_irq = 0 }, |
| [ SIGSEGV] { .handler = segv_handler, |
| .is_irq = 0 }, |
| [ SIGIO ] { .handler = sigio_handler, |
| .is_irq = 1 }, |
| [ SIGVTALRM ] { .handler = timer_handler, |
| .is_irq = 1 }, |
| [ SIGALRM ] { .handler = timer_handler, |
| .is_irq = 1 }, |
| [ SIGUSR2 ] { .handler = usr2_handler, |
| .is_irq = 0 }, |
| }; |
| |
| void do_longjmp(void *b, int val) |
| { |
| sigjmp_buf *buf = b; |
| |
| siglongjmp(*buf, val); |
| } |
| |
| /* |
| * 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: |
| */ |