1 | /* |
2 | * LM32 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 | #include "hw/lm32/lm32_pic.h" |
24 | |
25 | int lm32_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
26 | { |
27 | LM32CPU *cpu = LM32_CPU(cs); |
28 | CPULM32State *env = &cpu->env; |
29 | |
30 | if (n < 32) { |
31 | return gdb_get_reg32(mem_buf, env->regs[n]); |
32 | } else { |
33 | switch (n) { |
34 | case 32: |
35 | return gdb_get_reg32(mem_buf, env->pc); |
36 | /* FIXME: put in right exception ID */ |
37 | case 33: |
38 | return gdb_get_reg32(mem_buf, 0); |
39 | case 34: |
40 | return gdb_get_reg32(mem_buf, env->eba); |
41 | case 35: |
42 | return gdb_get_reg32(mem_buf, env->deba); |
43 | case 36: |
44 | return gdb_get_reg32(mem_buf, env->ie); |
45 | case 37: |
46 | return gdb_get_reg32(mem_buf, lm32_pic_get_im(env->pic_state)); |
47 | case 38: |
48 | return gdb_get_reg32(mem_buf, lm32_pic_get_ip(env->pic_state)); |
49 | } |
50 | } |
51 | return 0; |
52 | } |
53 | |
54 | int lm32_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
55 | { |
56 | LM32CPU *cpu = LM32_CPU(cs); |
57 | CPUClass *cc = CPU_GET_CLASS(cs); |
58 | CPULM32State *env = &cpu->env; |
59 | uint32_t tmp; |
60 | |
61 | if (n > cc->gdb_num_core_regs) { |
62 | return 0; |
63 | } |
64 | |
65 | tmp = ldl_p(mem_buf); |
66 | |
67 | if (n < 32) { |
68 | env->regs[n] = tmp; |
69 | } else { |
70 | switch (n) { |
71 | case 32: |
72 | env->pc = tmp; |
73 | break; |
74 | case 34: |
75 | env->eba = tmp; |
76 | break; |
77 | case 35: |
78 | env->deba = tmp; |
79 | break; |
80 | case 36: |
81 | env->ie = tmp; |
82 | break; |
83 | case 37: |
84 | lm32_pic_set_im(env->pic_state, tmp); |
85 | break; |
86 | case 38: |
87 | lm32_pic_set_ip(env->pic_state, tmp); |
88 | break; |
89 | } |
90 | } |
91 | return 4; |
92 | } |
93 | |