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 "cpu.h" |
22 | #include "exec/gdbstub.h" |
23 | |
24 | int alpha_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
25 | { |
26 | AlphaCPU *cpu = ALPHA_CPU(cs); |
27 | CPUAlphaState *env = &cpu->env; |
28 | uint64_t val; |
29 | CPU_DoubleU d; |
30 | |
31 | switch (n) { |
32 | case 0 ... 30: |
33 | val = cpu_alpha_load_gr(env, n); |
34 | break; |
35 | case 32 ... 62: |
36 | d.d = env->fir[n - 32]; |
37 | val = d.ll; |
38 | break; |
39 | case 63: |
40 | val = cpu_alpha_load_fpcr(env); |
41 | break; |
42 | case 64: |
43 | val = env->pc; |
44 | break; |
45 | case 66: |
46 | val = env->unique; |
47 | break; |
48 | case 31: |
49 | case 65: |
50 | /* 31 really is the zero register; 65 is unassigned in the |
51 | gdb protocol, but is still required to occupy 8 bytes. */ |
52 | val = 0; |
53 | break; |
54 | default: |
55 | return 0; |
56 | } |
57 | return gdb_get_regl(mem_buf, val); |
58 | } |
59 | |
60 | int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
61 | { |
62 | AlphaCPU *cpu = ALPHA_CPU(cs); |
63 | CPUAlphaState *env = &cpu->env; |
64 | target_ulong tmp = ldtul_p(mem_buf); |
65 | CPU_DoubleU d; |
66 | |
67 | switch (n) { |
68 | case 0 ... 30: |
69 | cpu_alpha_store_gr(env, n, tmp); |
70 | break; |
71 | case 32 ... 62: |
72 | d.ll = tmp; |
73 | env->fir[n - 32] = d.d; |
74 | break; |
75 | case 63: |
76 | cpu_alpha_store_fpcr(env, tmp); |
77 | break; |
78 | case 64: |
79 | env->pc = tmp; |
80 | break; |
81 | case 66: |
82 | env->unique = tmp; |
83 | break; |
84 | case 31: |
85 | case 65: |
86 | /* 31 really is the zero register; 65 is unassigned in the |
87 | gdb protocol, but is still required to occupy 8 bytes. */ |
88 | break; |
89 | default: |
90 | return 0; |
91 | } |
92 | return 8; |
93 | } |
94 | |