1 /* $FreeBSD: releng/11.0/sys/powerpc/powerpc/db_interface.c 290434 2015-11-06 04:56:52Z jhibbits $ */
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/lock.h>
12 #include <sys/pcpu.h>
13 #include <sys/proc.h>
14 #include <sys/smp.h>
15
16 #include <machine/kdb.h>
17 #include <machine/md_var.h>
18
19 #include <vm/vm.h>
20 #include <vm/pmap.h>
21
22 #include <ddb/ddb.h>
23 #include <ddb/db_sym.h>
24 #include <ddb/db_command.h>
25 #include <ddb/db_access.h>
26 #include <ddb/db_output.h>
27
28 #include <dev/ofw/openfirm.h>
29
30 int
31 db_read_bytes(vm_offset_t addr, size_t size, char *data)
32 {
33 jmp_buf jb;
34 void *prev_jb;
35 char *src;
36 int ret;
37
38 prev_jb = kdb_jmpbuf(jb);
39 ret = setjmp(jb);
40 if (ret == 0) {
41 src = (char *)addr;
42
43 if (size == 4)
44 *((int *)data) = *((int *)src);
45 else if (size == 2)
46 *((short *)data) = *((short *)src);
47 else
48 while (size-- > 0)
49 *data++ = *src++;
50 }
51 (void)kdb_jmpbuf(prev_jb);
52 return (ret);
53 }
54
55 int
56 db_write_bytes(vm_offset_t addr, size_t size, char *data)
57 {
58 jmp_buf jb;
59 void *prev_jb;
60 char *dst;
61 size_t cnt;
62 int ret;
63
64 prev_jb = kdb_jmpbuf(jb);
65 ret = setjmp(jb);
66 if (ret == 0) {
67 dst = (char *)addr;
68 cnt = size;
69
70 if (size == 4 && (addr & 3) == 0 && ((uintptr_t)data & 3) == 0)
71 *((int*)dst) = *((int*)data);
72 else
73 if (size == 2 && (addr & 1) == 0 && ((uintptr_t)data & 1) == 0)
74 *((short*)dst) = *((short*)data);
75 else
76 while (cnt-- > 0)
77 *dst++ = *data++;
78 kdb_cpu_sync_icache((void *)addr, size);
79 }
80 (void)kdb_jmpbuf(prev_jb);
81 return (ret);
82 }
83
84 void
85 db_show_mdpcpu(struct pcpu *pc)
86 {
87
88 db_printf("PPC: hwref = %#zx\n", pc->pc_hwref);
89 db_printf("PPC: ipimask = %#x\n", pc->pc_ipimask);
90 db_printf("PPC: pir = %#x\n", pc->pc_pir);
91 }
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