| 1 |
/* |
| 2 |
* sigsegv.h - SIGSEGV signals support |
| 3 |
* |
| 4 |
* Derived from Bruno Haible's work on his SIGSEGV library for clisp |
| 5 |
* <http://clisp.sourceforge.net/> |
| 6 |
* |
| 7 |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 8 |
* |
| 9 |
* This program is free software; you can redistribute it and/or modify |
| 10 |
* it under the terms of the GNU General Public License as published by |
| 11 |
* the Free Software Foundation; either version 2 of the License, or |
| 12 |
* (at your option) any later version. |
| 13 |
* |
| 14 |
* This program is distributed in the hope that it will be useful, |
| 15 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 |
* GNU General Public License for more details. |
| 18 |
* |
| 19 |
* You should have received a copy of the GNU General Public License |
| 20 |
* along with this program; if not, write to the Free Software |
| 21 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 |
*/ |
| 23 |
|
| 24 |
#ifndef SIGSEGV_H |
| 25 |
#define SIGSEGV_H |
| 26 |
|
| 27 |
// Address type |
| 28 |
typedef char * sigsegv_address_t; |
| 29 |
|
| 30 |
// Transfer type (intended to be used a mask for sigsegv_*_ignore_range()) |
| 31 |
enum sigsegv_transfer_type_t { |
| 32 |
SIGSEGV_TRANSFER_UNKNOWN = 0, |
| 33 |
SIGSEGV_TRANSFER_LOAD = 1, |
| 34 |
SIGSEGV_TRANSFER_STORE = 2, |
| 35 |
}; |
| 36 |
|
| 37 |
// SIGSEGV handler return state |
| 38 |
enum sigsegv_return_t { |
| 39 |
SIGSEGV_RETURN_SUCCESS, |
| 40 |
SIGSEGV_RETURN_FAILURE, |
| 41 |
SIGSEGV_RETURN_SKIP_INSTRUCTION, |
| 42 |
}; |
| 43 |
|
| 44 |
// Type of a SIGSEGV handler. Returns boolean expressing successful operation |
| 45 |
typedef sigsegv_return_t (*sigsegv_fault_handler_t)(sigsegv_address_t fault_address, sigsegv_address_t instruction_address); |
| 46 |
|
| 47 |
// Type of a SIGSEGV state dump function |
| 48 |
typedef void (*sigsegv_state_dumper_t)(sigsegv_address_t fault_address, sigsegv_address_t instruction_address); |
| 49 |
|
| 50 |
// Install a SIGSEGV handler. Returns boolean expressing success |
| 51 |
extern bool sigsegv_install_handler(sigsegv_fault_handler_t handler); |
| 52 |
|
| 53 |
// Remove the user SIGSEGV handler, revert to default behavior |
| 54 |
extern void sigsegv_uninstall_handler(void); |
| 55 |
|
| 56 |
// Set callback function when we cannot handle the fault |
| 57 |
extern void sigsegv_set_dump_state(sigsegv_state_dumper_t handler); |
| 58 |
|
| 59 |
// Define an address that is bound to be invalid for a program counter |
| 60 |
const sigsegv_address_t SIGSEGV_INVALID_PC = (sigsegv_address_t)(-1); |
| 61 |
|
| 62 |
#endif /* SIGSEGV_H */ |
