1 /* $FreeBSD: releng/6.1/sys/powerpc/powerpc/db_interface.c 132688 2004-07-27 07:04:58Z grehan $ */
2 /* $NetBSD: db_interface.c,v 1.20 2002/05/13 20:30:09 matt Exp $ */
3 /* $OpenBSD: db_interface.c,v 1.2 1996/12/28 06:21:50 rahnds Exp $ */
4
5
6 #include <sys/param.h>
7 #include <sys/systm.h>
8 #include <sys/cons.h>
9 #include <sys/kdb.h>
10 #include <sys/ktr.h>
11 #include <sys/linker_set.h>
12 #include <sys/lock.h>
13 #include <sys/pcpu.h>
14 #include <sys/proc.h>
15 #include <sys/smp.h>
16
17 #include <machine/cpu.h>
18 #include <machine/md_var.h>
19
20 #include <vm/vm.h>
21 #include <vm/pmap.h>
22
23 #include <ddb/ddb.h>
24 #include <ddb/db_sym.h>
25 #include <ddb/db_command.h>
26 #include <ddb/db_access.h>
27 #include <ddb/db_output.h>
28
29 #include <dev/ofw/openfirm.h>
30
31 int
32 db_read_bytes(vm_offset_t addr, size_t size, char *data)
33 {
34 jmp_buf jb;
35 void *prev_jb;
36 char *src;
37 int ret;
38
39 prev_jb = kdb_jmpbuf(jb);
40 ret = setjmp(jb);
41 if (ret == 0) {
42 src = (char *)addr;
43
44 if (size == 4)
45 *((int *)data) = *((int *)src);
46 else if (size == 2)
47 *((short *)data) = *((short *)src);
48 else
49 while (size-- > 0)
50 *data++ = *src++;
51 }
52 (void)kdb_jmpbuf(prev_jb);
53 return (ret);
54 }
55
56 int
57 db_write_bytes(vm_offset_t addr, size_t size, char *data)
58 {
59 jmp_buf jb;
60 void *prev_jb;
61 char *dst;
62 int ret;
63
64 prev_jb = kdb_jmpbuf(jb);
65 ret = setjmp(jb);
66 if (ret == 0) {
67 dst = (char *)addr;
68
69 if (size == 4)
70 *((int *)dst) = *((int *)data);
71 else if (size == 2)
72 *((short *)dst) = *((short *)data);
73 else
74 while (size-- > 0)
75 *dst++ = *data++;
76 }
77 __syncicache((void *)addr, size);
78
79 (void)kdb_jmpbuf(prev_jb);
80 return (ret);
81 }
82
83 void
84 db_show_mdpcpu(struct pcpu *pc)
85 {
86 }
87
88 /*
89 * PowerPC-specific ddb commands:
90 */
91 DB_COMMAND(reboot, db_reboot)
92 {
93 cpu_reset();
94 }
95
96 DB_COMMAND(halt, db_halt)
97 {
98 cpu_halt();
99 }
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