scsi: esp: check buffer length before reading scsi command
[qemu.git] / target-alpha / gdbstub.c
1 /*
2 * Alpha 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 alpha_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
26 {
27 AlphaCPU *cpu = ALPHA_CPU(cs);
28 CPUAlphaState *env = &cpu->env;
29 uint64_t val;
30 CPU_DoubleU d;
31
32 switch (n) {
33 case 0 ... 30:
34 val = cpu_alpha_load_gr(env, n);
35 break;
36 case 32 ... 62:
37 d.d = env->fir[n - 32];
38 val = d.ll;
39 break;
40 case 63:
41 val = cpu_alpha_load_fpcr(env);
42 break;
43 case 64:
44 val = env->pc;
45 break;
46 case 66:
47 val = env->unique;
48 break;
49 case 31:
50 case 65:
51 /* 31 really is the zero register; 65 is unassigned in the
52 gdb protocol, but is still required to occupy 8 bytes. */
53 val = 0;
54 break;
55 default:
56 return 0;
57 }
58 return gdb_get_regl(mem_buf, val);
59 }
60
61 int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
62 {
63 AlphaCPU *cpu = ALPHA_CPU(cs);
64 CPUAlphaState *env = &cpu->env;
65 target_ulong tmp = ldtul_p(mem_buf);
66 CPU_DoubleU d;
67
68 switch (n) {
69 case 0 ... 30:
70 cpu_alpha_store_gr(env, n, tmp);
71 break;
72 case 32 ... 62:
73 d.ll = tmp;
74 env->fir[n - 32] = d.d;
75 break;
76 case 63:
77 cpu_alpha_store_fpcr(env, tmp);
78 break;
79 case 64:
80 env->pc = tmp;
81 break;
82 case 66:
83 env->unique = tmp;
84 break;
85 case 31:
86 case 65:
87 /* 31 really is the zero register; 65 is unassigned in the
88 gdb protocol, but is still required to occupy 8 bytes. */
89 break;
90 default:
91 return 0;
92 }
93 return 8;
94 }