99 строки
2.3 KiB
C
99 строки
2.3 KiB
C
/*
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* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <asm/page.h>
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#include <asm/unistd.h>
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#include <asm/ptrace.h>
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#include "init.h"
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#include "sysdep/ptrace.h"
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#include "sigcontext.h"
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#include "sysdep/sigcontext.h"
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#include "irq_user.h"
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#include "signal_user.h"
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#include "time_user.h"
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#include "task.h"
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#include "mode.h"
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#include "choose-mode.h"
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#include "kern_util.h"
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#include "user_util.h"
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#include "os.h"
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void kill_child_dead(int pid)
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{
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kill(pid, SIGKILL);
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kill(pid, SIGCONT);
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do {
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int n;
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CATCH_EINTR(n = waitpid(pid, NULL, 0));
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if (n > 0)
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kill(pid, SIGCONT);
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else
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break;
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} while(1);
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}
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void segv_handler(int sig, union uml_pt_regs *regs)
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{
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struct faultinfo * fi = UPT_FAULTINFO(regs);
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if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){
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bad_segv(*fi, UPT_IP(regs));
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return;
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}
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segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs);
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}
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void usr2_handler(int sig, union uml_pt_regs *regs)
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{
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CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
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}
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struct signal_info sig_info[] = {
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[ SIGTRAP ] { .handler = relay_signal,
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.is_irq = 0 },
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[ SIGFPE ] { .handler = relay_signal,
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.is_irq = 0 },
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[ SIGILL ] { .handler = relay_signal,
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.is_irq = 0 },
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[ SIGWINCH ] { .handler = winch,
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.is_irq = 1 },
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[ SIGBUS ] { .handler = bus_handler,
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.is_irq = 0 },
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[ SIGSEGV] { .handler = segv_handler,
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.is_irq = 0 },
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[ SIGIO ] { .handler = sigio_handler,
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.is_irq = 1 },
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[ SIGVTALRM ] { .handler = timer_handler,
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.is_irq = 1 },
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[ SIGALRM ] { .handler = timer_handler,
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.is_irq = 1 },
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[ SIGUSR2 ] { .handler = usr2_handler,
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.is_irq = 0 },
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};
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void do_longjmp(void *b, int val)
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{
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sigjmp_buf *buf = b;
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siglongjmp(*buf, val);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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