xref: /freebsd/sys/amd64/include/gdb_machdep.h (revision 7029da5c36f2d3cf6bb6c81bf551229f416399e8)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2004 Marcel Moolenaar
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef _MACHINE_GDB_MACHDEP_H_
32 #define	_MACHINE_GDB_MACHDEP_H_
33 
34 #define	GDB_BUFSZ	4096
35 #define	GDB_NREGS	56
36 #define	GDB_REG_PC	16
37 _Static_assert(GDB_BUFSZ >= (GDB_NREGS * 16), "buffer fits 'g' regs");
38 
39 static __inline size_t
40 gdb_cpu_regsz(int regnum)
41 {
42 	return ((regnum > 16 && regnum < 24) ? 4 : 8);
43 }
44 
45 static __inline int
46 gdb_cpu_query(void)
47 {
48 	return (0);
49 }
50 
51 void *gdb_begin_write(void);
52 void *gdb_cpu_getreg(int, size_t *);
53 void gdb_cpu_setreg(int, void *);
54 int gdb_cpu_signal(int, int);
55 void gdb_end_write(void *);
56 
57 #endif /* !_MACHINE_GDB_MACHDEP_H_ */
58