xref: /freebsd/sys/amd64/include/gdb_machdep.h (revision 9f23cbd6cae82fd77edfad7173432fa8dccd0a95)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
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_RAX	0
37 #define	GDB_REG_RBX	1
38 #define	GDB_REG_RCX	2
39 #define	GDB_REG_RDX	3
40 #define	GDB_REG_RSI	4
41 #define	GDB_REG_RDI	5
42 #define	GDB_REG_RBP	6
43 #define	GDB_REG_RSP	7
44 #define	GDB_REG_R8	8
45 #define	GDB_REG_R9	9
46 #define	GDB_REG_R10	10
47 #define	GDB_REG_R11	11
48 #define	GDB_REG_R12	12
49 #define	GDB_REG_R13	13
50 #define	GDB_REG_R14	14
51 #define	GDB_REG_R15	15
52 #define	GDB_REG_PC	16
53 #define	GDB_REG_RFLAGS	17
54 #define	GDB_REG_CS	18
55 #define	GDB_REG_SS	19
56 _Static_assert(GDB_BUFSZ >= (GDB_NREGS * 16), "buffer fits 'g' regs");
57 
58 static __inline size_t
59 gdb_cpu_regsz(int regnum)
60 {
61 	return ((regnum > 16 && regnum < 24) ? 4 : 8);
62 }
63 
64 static __inline int
65 gdb_cpu_query(void)
66 {
67 	return (0);
68 }
69 
70 void *gdb_begin_write(void);
71 void *gdb_cpu_getreg(int, size_t *);
72 void gdb_cpu_setreg(int, void *);
73 int gdb_cpu_signal(int, int);
74 void gdb_end_write(void *);
75 void gdb_cpu_stop_reason(int, int);
76 
77 #endif /* !_MACHINE_GDB_MACHDEP_H_ */
78