diff options
Diffstat (limited to 'arch/um/os-Linux/skas/trap.c')
-rw-r--r-- | arch/um/os-Linux/skas/trap.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/arch/um/os-Linux/skas/trap.c b/arch/um/os-Linux/skas/trap.c deleted file mode 100644 index a19a74f08fa9..000000000000 --- a/arch/um/os-Linux/skas/trap.c +++ /dev/null | |||
@@ -1,73 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | ||
3 | * Licensed under the GPL | ||
4 | */ | ||
5 | |||
6 | #include <errno.h> | ||
7 | #include <signal.h> | ||
8 | #include "sysdep/ptrace.h" | ||
9 | #include "kern_constants.h" | ||
10 | #include "as-layout.h" | ||
11 | #include "kern_util.h" | ||
12 | #include "os.h" | ||
13 | #include "sigcontext.h" | ||
14 | #include "task.h" | ||
15 | |||
16 | void (*sig_info[NSIG])(int, struct uml_pt_regs *) = { | ||
17 | [SIGTRAP] = relay_signal, | ||
18 | [SIGFPE] = relay_signal, | ||
19 | [SIGILL] = relay_signal, | ||
20 | [SIGWINCH] = winch, | ||
21 | [SIGBUS] = bus_handler, | ||
22 | [SIGSEGV] = segv_handler, | ||
23 | [SIGIO] = sigio_handler, | ||
24 | [SIGVTALRM] = timer_handler }; | ||
25 | |||
26 | static struct uml_pt_regs ksig_regs[UM_NR_CPUS]; | ||
27 | |||
28 | void sig_handler_common_skas(int sig, void *sc_ptr) | ||
29 | { | ||
30 | struct sigcontext *sc = sc_ptr; | ||
31 | struct uml_pt_regs *r; | ||
32 | void (*handler)(int, struct uml_pt_regs *); | ||
33 | int save_user, save_errno = errno; | ||
34 | |||
35 | /* | ||
36 | * This is done because to allow SIGSEGV to be delivered inside a SEGV | ||
37 | * handler. This can happen in copy_user, and if SEGV is disabled, | ||
38 | * the process will die. | ||
39 | * XXX Figure out why this is better than SA_NODEFER | ||
40 | */ | ||
41 | if (sig == SIGSEGV) { | ||
42 | change_sig(SIGSEGV, 1); | ||
43 | /* | ||
44 | * For segfaults, we want the data from the | ||
45 | * sigcontext. In this case, we don't want to mangle | ||
46 | * the process registers, so use a static set of | ||
47 | * registers. For other signals, the process | ||
48 | * registers are OK. | ||
49 | */ | ||
50 | r = &ksig_regs[cpu()]; | ||
51 | copy_sc(r, sc_ptr); | ||
52 | } | ||
53 | else r = TASK_REGS(get_current()); | ||
54 | |||
55 | save_user = r->is_user; | ||
56 | r->is_user = 0; | ||
57 | if ((sig == SIGFPE) || (sig == SIGSEGV) || (sig == SIGBUS) || | ||
58 | (sig == SIGILL) || (sig == SIGTRAP)) | ||
59 | GET_FAULTINFO_FROM_SC(r->faultinfo, sc); | ||
60 | |||
61 | change_sig(SIGUSR1, 1); | ||
62 | |||
63 | handler = sig_info[sig]; | ||
64 | |||
65 | /* unblock SIGVTALRM, SIGIO if sig isn't IRQ signal */ | ||
66 | if ((sig != SIGIO) && (sig != SIGWINCH) && (sig != SIGVTALRM)) | ||
67 | unblock_signals(); | ||
68 | |||
69 | handler(sig, r); | ||
70 | |||
71 | errno = save_errno; | ||
72 | r->is_user = save_user; | ||
73 | } | ||