vmsvga: don't process more than 1024 fifo commands at once
[qemu.git] / target-openrisc / gdbstub.c
1 /*
2 * OpenRISC gdb server stub
3 *
4 * Copyright (c) 2003-2005 Fabrice Bellard
5 * Copyright (c) 2013 SUSE LINUX Products GmbH
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 */
20 #include "qemu/osdep.h"
21 #include "qemu-common.h"
22 #include "cpu.h"
23 #include "exec/gdbstub.h"
24
25 int openrisc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
26 {
27 OpenRISCCPU *cpu = OPENRISC_CPU(cs);
28 CPUOpenRISCState *env = &cpu->env;
29
30 if (n < 32) {
31 return gdb_get_reg32(mem_buf, env->gpr[n]);
32 } else {
33 switch (n) {
34 case 32: /* PPC */
35 return gdb_get_reg32(mem_buf, env->ppc);
36
37 case 33: /* NPC */
38 return gdb_get_reg32(mem_buf, env->npc);
39
40 case 34: /* SR */
41 return gdb_get_reg32(mem_buf, env->sr);
42
43 default:
44 break;
45 }
46 }
47 return 0;
48 }
49
50 int openrisc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
51 {
52 OpenRISCCPU *cpu = OPENRISC_CPU(cs);
53 CPUClass *cc = CPU_GET_CLASS(cs);
54 CPUOpenRISCState *env = &cpu->env;
55 uint32_t tmp;
56
57 if (n > cc->gdb_num_core_regs) {
58 return 0;
59 }
60
61 tmp = ldl_p(mem_buf);
62
63 if (n < 32) {
64 env->gpr[n] = tmp;
65 } else {
66 switch (n) {
67 case 32: /* PPC */
68 env->ppc = tmp;
69 break;
70
71 case 33: /* NPC */
72 env->npc = tmp;
73 break;
74
75 case 34: /* SR */
76 env->sr = tmp;
77 break;
78
79 default:
80 break;
81 }
82 }
83 return 4;
84 }