/* * 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: */