1 /* Translate Mach exception codes into signal numbers.  Stub version.
2    Copyright (C) 1991-2022 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #include <hurd.h>
20 #include <hurd/signal.h>
21 
22 /* This file must be modified with machine-dependent details.  */
23 #error "need to write sysdeps/mach/hurd/MACHINE/exc2signal.c"
24 
25 /* Translate the Mach exception codes, as received in an `exception_raise' RPC,
26    into a signal number and signal subcode.  */
27 
28 void
_hurd_exception2signal(struct hurd_signal_detail * detail,int * signo)29 _hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
30 {
31   detail->error = 0;
32 
33   switch (detail->exc)
34     {
35     default:
36       *signo = SIGIOT;
37       detail->code = detail->exc;
38       break;
39 
40     case EXC_BAD_ACCESS:
41       if (detail->exc_code == KERN_PROTECTION_FAILURE)
42 	*signo = SIGSEGV;
43       else
44 	*signo = SIGBUS;
45       detail->code = detail->exc_subcode;
46       detail->error = detail->exc_code;
47       break;
48 
49     case EXC_BAD_INSTRUCTION:
50       *signo = SIGILL;
51       detail->code = 0;
52       break;
53 
54     case EXC_ARITHMETIC:
55       *signo = SIGFPE;
56       detail->code = 0;
57       break;
58 
59     case EXC_EMULATION:
60     case EXC_SOFTWARE:
61       *signo = SIGEMT;
62       detail->code = 0;
63       break;
64 
65     case EXC_BREAKPOINT:
66       *signo = SIGTRAP;
67       detail->code = 0;
68       break;
69     }
70 }
71 libc_hidden_def (_hurd_exception2signal)
72