2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
13 #include <asm/unistd.h>
14 #include <asm/ptrace.h>
16 #include "sysdep/ptrace.h"
17 #include "sigcontext.h"
18 #include "sysdep/sigcontext.h"
20 #include "signal_user.h"
21 #include "time_user.h"
24 #include "choose-mode.h"
25 #include "kern_util.h"
26 #include "user_util.h"
29 void kill_child_dead(int pid)
35 CATCH_EINTR(n = waitpid(pid, NULL, 0));
43 /* Unlocked - don't care if this is a bit off */
47 unsigned long address;
52 } segfault_record[1024];
54 void segv_handler(int sig, union uml_pt_regs *regs)
58 if(UPT_IS_USER(regs) && !UPT_SEGV_IS_FIXABLE(regs)){
59 bad_segv(UPT_FAULT_ADDR(regs), UPT_IP(regs),
60 UPT_FAULT_WRITE(regs));
63 max = sizeof(segfault_record)/sizeof(segfault_record[0]);
64 index = next_trap_index(max);
67 segfault_record[index].address = UPT_FAULT_ADDR(regs);
68 segfault_record[index].pid = os_getpid();
69 segfault_record[index].is_write = UPT_FAULT_WRITE(regs);
70 segfault_record[index].sp = UPT_SP(regs);
71 segfault_record[index].is_user = UPT_IS_USER(regs);
72 segv(UPT_FAULT_ADDR(regs), UPT_IP(regs), UPT_FAULT_WRITE(regs),
73 UPT_IS_USER(regs), regs);
76 void usr2_handler(int sig, union uml_pt_regs *regs)
78 CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
81 struct signal_info sig_info[] = {
82 [ SIGTRAP ] { .handler = relay_signal,
84 [ SIGFPE ] { .handler = relay_signal,
86 [ SIGILL ] { .handler = relay_signal,
88 [ SIGWINCH ] { .handler = winch,
90 [ SIGBUS ] { .handler = bus_handler,
92 [ SIGSEGV] { .handler = segv_handler,
94 [ SIGIO ] { .handler = sigio_handler,
96 [ SIGVTALRM ] { .handler = timer_handler,
98 [ SIGALRM ] { .handler = timer_handler,
100 [ SIGUSR2 ] { .handler = usr2_handler,
104 void do_longjmp(void *b, int val)
108 siglongjmp(*buf, val);
112 * Overrides for Emacs so that we follow Linus's tabbing style.
113 * Emacs will notice this stuff at the end of the file and automatically
114 * adjust the settings for this buffer only. This must remain at the end
116 * ---------------------------------------------------------------------------
118 * c-file-style: "linux"