src/Unix/sigsegv.h

/*
 *  sigsegv.h - SIGSEGV signals support
 *
 *  Derived from Bruno Haible's work on his SIGSEGV library for clisp
 *  <http://clisp.sourceforge.net/>
 *
 *  Basilisk II (C) 1997-2002 Christian Bauer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef SIGSEGV_H
#define SIGSEGV_H

// Address type
typedef char * sigsegv_address_t;

// Transfer type (intended to be used a mask for sigsegv_*_ignore_range())
enum sigsegv_transfer_type_t {
        SIGSEGV_TRANSFER_UNKNOWN        = 0,
        SIGSEGV_TRANSFER_LOAD           = 1,
        SIGSEGV_TRANSFER_STORE          = 2,
};

// SIGSEGV handler return state
enum sigsegv_return_t {
  SIGSEGV_RETURN_SUCCESS,
  SIGSEGV_RETURN_FAILURE,
  SIGSEGV_RETURN_SKIP_INSTRUCTION,
};

// Type of a SIGSEGV handler. Returns boolean expressing successful operation
typedef sigsegv_return_t (*sigsegv_fault_handler_t)(sigsegv_address_t fault_address, sigsegv_address_t instruction_address);

// Type of a SIGSEGV state dump function
typedef void (*sigsegv_state_dumper_t)(sigsegv_address_t fault_address, sigsegv_address_t instruction_address);

// Install a SIGSEGV handler. Returns boolean expressing success
extern bool sigsegv_install_handler(sigsegv_fault_handler_t handler);

// Remove the user SIGSEGV handler, revert to default behavior
extern void sigsegv_uninstall_handler(void);

// Set callback function when we cannot handle the fault
extern void sigsegv_set_dump_state(sigsegv_state_dumper_t handler);

// Define an address that is bound to be invalid for a program counter
const sigsegv_address_t SIGSEGV_INVALID_PC = (sigsegv_address_t)(-1);

#endif /* SIGSEGV_H */
Revision:	1.6
Committed:	2003-09-29T07:02:58Z (20 years, 10 months 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. ;-)
#	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 */