1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* MicroBlaze gdb server stub
*
* Copyright (c) 2003-2005 Fabrice Bellard
* Copyright (c) 2013 SUSE LINUX Products GmbH
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/gdbstub.h"
int mb_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
{
MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
CPUMBState *env = &cpu->env;
/*
* GDB expects registers to be reported in this order:
* R0-R31
* PC-BTR
* PVR0-PVR11
* EDR-TLBHI
* SLR-SHR
*/
if (n < 32) {
return gdb_get_reg32(mem_buf, env->regs[n]);
} else {
n -= 32;
switch (n) {
case 0 ... 5:
return gdb_get_reg32(mem_buf, env->sregs[n]);
/* PVR12 is intentionally skipped */
case 6 ... 17:
n -= 6;
return gdb_get_reg32(mem_buf, env->pvr.regs[n]);
case 18 ... 24:
/* Add an offset of 6 to resume where we left off with SRegs */
n = n - 18 + 6;
return gdb_get_reg32(mem_buf, env->sregs[n]);
case 25:
return gdb_get_reg32(mem_buf, env->slr);
case 26:
return gdb_get_reg32(mem_buf, env->shr);
default:
return 0;
}
}
}
int mb_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
{
MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
CPUClass *cc = CPU_GET_CLASS(cs);
CPUMBState *env = &cpu->env;
uint32_t tmp;
if (n > cc->gdb_num_core_regs) {
return 0;
}
tmp = ldl_p(mem_buf);
if (n < 32) {
env->regs[n] = tmp;
} else {
n -= 32;
switch (n) {
case 0 ... 5:
env->sregs[n] = tmp;
break;
/* PVR12 is intentionally skipped */
case 6 ... 17:
n -= 6;
env->pvr.regs[n] = tmp;
break;
case 18 ... 24:
/* Add an offset of 6 to resume where we left off with SRegs */
n = n - 18 + 6;
env->sregs[n] = tmp;
break;
case 25:
env->slr = tmp;
break;
case 26:
env->shr = tmp;
break;
}
}
return 4;
}
|
