1 | /* |
2 | * m68k 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 2.1 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 m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
25 | { |
26 | M68kCPU *cpu = M68K_CPU(cs); |
27 | CPUM68KState *env = &cpu->env; |
28 | |
29 | if (n < 8) { |
30 | /* D0-D7 */ |
31 | return gdb_get_reg32(mem_buf, env->dregs[n]); |
32 | } else if (n < 16) { |
33 | /* A0-A7 */ |
34 | return gdb_get_reg32(mem_buf, env->aregs[n - 8]); |
35 | } else { |
36 | switch (n) { |
37 | case 16: |
38 | /* SR is made of SR+CCR, CCR is many 1bit flags so uses helper */ |
39 | return gdb_get_reg32(mem_buf, env->sr | cpu_m68k_get_ccr(env)); |
40 | case 17: |
41 | return gdb_get_reg32(mem_buf, env->pc); |
42 | } |
43 | } |
44 | /* |
45 | * FP registers not included here because they vary between |
46 | * ColdFire and m68k. Use XML bits for these. |
47 | */ |
48 | return 0; |
49 | } |
50 | |
51 | int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
52 | { |
53 | M68kCPU *cpu = M68K_CPU(cs); |
54 | CPUM68KState *env = &cpu->env; |
55 | uint32_t tmp; |
56 | |
57 | tmp = ldl_p(mem_buf); |
58 | |
59 | if (n < 8) { |
60 | /* D0-D7 */ |
61 | env->dregs[n] = tmp; |
62 | } else if (n < 16) { |
63 | /* A0-A7 */ |
64 | env->aregs[n - 8] = tmp; |
65 | } else { |
66 | switch (n) { |
67 | case 16: |
68 | cpu_m68k_set_sr(env, tmp); |
69 | break; |
70 | case 17: |
71 | env->pc = tmp; |
72 | break; |
73 | default: |
74 | return 0; |
75 | } |
76 | } |
77 | return 4; |
78 | } |
79 | |