scsi: esp: check buffer length before reading scsi command
[qemu.git] / target-cris / gdbstub.c
1 /*
2 * CRIS 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 crisv10_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
26 {
27 CRISCPU *cpu = CRIS_CPU(cs);
28 CPUCRISState *env = &cpu->env;
29
30 if (n < 15) {
31 return gdb_get_reg32(mem_buf, env->regs[n]);
32 }
33
34 if (n == 15) {
35 return gdb_get_reg32(mem_buf, env->pc);
36 }
37
38 if (n < 32) {
39 switch (n) {
40 case 16:
41 return gdb_get_reg8(mem_buf, env->pregs[n - 16]);
42 case 17:
43 return gdb_get_reg8(mem_buf, env->pregs[n - 16]);
44 case 20:
45 case 21:
46 return gdb_get_reg16(mem_buf, env->pregs[n - 16]);
47 default:
48 if (n >= 23) {
49 return gdb_get_reg32(mem_buf, env->pregs[n - 16]);
50 }
51 break;
52 }
53 }
54 return 0;
55 }
56
57 int cris_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
58 {
59 CRISCPU *cpu = CRIS_CPU(cs);
60 CPUCRISState *env = &cpu->env;
61 uint8_t srs;
62
63 srs = env->pregs[PR_SRS];
64 if (n < 16) {
65 return gdb_get_reg32(mem_buf, env->regs[n]);
66 }
67
68 if (n >= 21 && n < 32) {
69 return gdb_get_reg32(mem_buf, env->pregs[n - 16]);
70 }
71 if (n >= 33 && n < 49) {
72 return gdb_get_reg32(mem_buf, env->sregs[srs][n - 33]);
73 }
74 switch (n) {
75 case 16:
76 return gdb_get_reg8(mem_buf, env->pregs[0]);
77 case 17:
78 return gdb_get_reg8(mem_buf, env->pregs[1]);
79 case 18:
80 return gdb_get_reg32(mem_buf, env->pregs[2]);
81 case 19:
82 return gdb_get_reg8(mem_buf, srs);
83 case 20:
84 return gdb_get_reg16(mem_buf, env->pregs[4]);
85 case 32:
86 return gdb_get_reg32(mem_buf, env->pc);
87 }
88
89 return 0;
90 }
91
92 int cris_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
93 {
94 CRISCPU *cpu = CRIS_CPU(cs);
95 CPUCRISState *env = &cpu->env;
96 uint32_t tmp;
97
98 if (n > 49) {
99 return 0;
100 }
101
102 tmp = ldl_p(mem_buf);
103
104 if (n < 16) {
105 env->regs[n] = tmp;
106 }
107
108 if (n >= 21 && n < 32) {
109 env->pregs[n - 16] = tmp;
110 }
111
112 /* FIXME: Should support function regs be writable? */
113 switch (n) {
114 case 16:
115 return 1;
116 case 17:
117 return 1;
118 case 18:
119 env->pregs[PR_PID] = tmp;
120 break;
121 case 19:
122 return 1;
123 case 20:
124 return 2;
125 case 32:
126 env->pc = tmp;
127 break;
128 }
129
130 return 4;
131 }