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root/cebix/BasiliskII/src/Unix/sigsegv.h
Revision: 1.6
Committed: 2003-09-29T07:02:58Z (21 years, 1 month ago) by gbeauche
Content type: text/plain
Branch: MAIN
Changes since 1.5: +8 -7 lines
Log Message:
New SIGSEGV API so that skip-instruction requests are more explicit. Yes,
that's api change, but that's cooler now for SheepShaver. ;-)

File Contents

# User Rev Content
1 gbeauche 1.1 /*
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 cebix 1.2 * Basilisk II (C) 1997-2002 Christian Bauer
8 gbeauche 1.1 *
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 gbeauche 1.5 // 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 gbeauche 1.6 // 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 gbeauche 1.1 // Type of a SIGSEGV handler. Returns boolean expressing successful operation
45 gbeauche 1.6 typedef sigsegv_return_t (*sigsegv_fault_handler_t)(sigsegv_address_t fault_address, sigsegv_address_t instruction_address);
46 gbeauche 1.4
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 gbeauche 1.1
50     // Install a SIGSEGV handler. Returns boolean expressing success
51 gbeauche 1.4 extern bool sigsegv_install_handler(sigsegv_fault_handler_t handler);
52 gbeauche 1.1
53     // Remove the user SIGSEGV handler, revert to default behavior
54     extern void sigsegv_uninstall_handler(void);
55 gbeauche 1.3
56     // Set callback function when we cannot handle the fault
57 gbeauche 1.4 extern void sigsegv_set_dump_state(sigsegv_state_dumper_t handler);
58 gbeauche 1.3
59 gbeauche 1.1 // 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 */