1 /*
2 * Copyright (c) 2004 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/5.3/sys/amd64/amd64/gdb_machdep.c 131899 2004-07-10 17:47:22Z marcel $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kdb.h>
33 #include <sys/kernel.h>
34 #include <sys/proc.h>
35 #include <sys/signal.h>
36
37 #include <machine/frame.h>
38 #include <machine/gdb_machdep.h>
39 #include <machine/psl.h>
40 #include <machine/reg.h>
41 #include <machine/trap.h>
42
43 #include <gdb/gdb.h>
44
45 void *
46 gdb_cpu_getreg(int regnum, size_t *regsz)
47 {
48 struct trapframe *tf = kdb_frame;
49
50 *regsz = gdb_cpu_regsz(regnum);
51 switch (regnum) {
52 case 0: return (&tf->tf_rax);
53 case 1: return (&tf->tf_rbx);
54 case 2: return (&tf->tf_rcx);
55 case 3: return (&tf->tf_rdx);
56 case 4: return (&tf->tf_rsi);
57 case 5: return (&tf->tf_rdi);
58 case 6: return (&tf->tf_rbp);
59 case 7: return (&tf->tf_rsp);
60 case 8: return (&tf->tf_r8);
61 case 9: return (&tf->tf_r9);
62 case 10: return (&tf->tf_r10);
63 case 11: return (&tf->tf_r11);
64 case 12: return (&tf->tf_r12);
65 case 13: return (&tf->tf_r13);
66 case 14: return (&tf->tf_r14);
67 case 15: return (&tf->tf_r15);
68 case 16: return (&tf->tf_rip);
69 case 17: return (&tf->tf_rflags);
70 case 18: return (&tf->tf_cs);
71 case 19: return (&tf->tf_ss);
72 }
73 return (NULL);
74 }
75
76 void
77 gdb_cpu_setreg(int regnum, register_t val)
78 {
79 struct trapframe *tf = kdb_frame;
80
81 switch (regnum) {
82 case GDB_REG_PC: tf->tf_rip = val; break;
83 }
84 }
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