1 /*-
2 * Copyright (c) 2006 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/9.0/sys/powerpc/powerpc/gdb_machdep.c 177288 2008-03-17 00:46:52Z 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/gdb_machdep.h>
38 #include <machine/pcb.h>
39 #include <machine/reg.h>
40
41 #include <machine/hid.h>
42 #include <machine/spr.h>
43
44 #include <machine/trap.h>
45
46 #include <gdb/gdb.h>
47 #include <gdb/gdb_int.h>
48
49 void *
50 gdb_cpu_getreg(int regnum, size_t *regsz)
51 {
52
53 *regsz = gdb_cpu_regsz(regnum);
54
55 if (kdb_thread == curthread) {
56 if (regnum == 0 || (regnum >= 2 && regnum <= 31))
57 return (kdb_frame->fixreg + regnum);
58 if (regnum == 64)
59 return (&kdb_frame->srr0);
60 if (regnum == 67)
61 return (&kdb_frame->lr);
62 }
63
64 if (regnum == 1)
65 return (&kdb_thrctx->pcb_sp);
66 if (regnum >= 14 && regnum <= 31)
67 return (kdb_thrctx->pcb_context + (regnum - 14));
68 if (regnum == 64)
69 return (&kdb_thrctx->pcb_lr);
70
71 return (NULL);
72 }
73
74 void
75 gdb_cpu_setreg(int regnum, void *val)
76 {
77
78 switch (regnum) {
79 case GDB_REG_PC:
80 break;
81 }
82 }
83
84 int
85 gdb_cpu_signal(int vector, int dummy __unused)
86 {
87 #ifdef E500
88 if (vector == EXC_DEBUG || vector == EXC_PGM)
89 return (SIGTRAP);
90 #else
91 if (vector == EXC_TRC || vector == EXC_RUNMODETRC)
92 return (SIGTRAP);
93 #endif
94
95 if (vector <= 255)
96 return (vector);
97 else
98 return (SIGEMT);
99 }
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