1 | /* |
2 | * ARM gdb server stub: AArch64 specific functions. |
3 | * |
4 | * Copyright (c) 2013 SUSE LINUX Products GmbH |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Lesser General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
18 | */ |
19 | #include "qemu/osdep.h" |
20 | #include "cpu.h" |
21 | #include "exec/gdbstub.h" |
22 | |
23 | int aarch64_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
24 | { |
25 | ARMCPU *cpu = ARM_CPU(cs); |
26 | CPUARMState *env = &cpu->env; |
27 | |
28 | if (n < 31) { |
29 | /* Core integer register. */ |
30 | return gdb_get_reg64(mem_buf, env->xregs[n]); |
31 | } |
32 | switch (n) { |
33 | case 31: |
34 | return gdb_get_reg64(mem_buf, env->xregs[31]); |
35 | case 32: |
36 | return gdb_get_reg64(mem_buf, env->pc); |
37 | case 33: |
38 | return gdb_get_reg32(mem_buf, pstate_read(env)); |
39 | } |
40 | /* Unknown register. */ |
41 | return 0; |
42 | } |
43 | |
44 | int aarch64_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
45 | { |
46 | ARMCPU *cpu = ARM_CPU(cs); |
47 | CPUARMState *env = &cpu->env; |
48 | uint64_t tmp; |
49 | |
50 | tmp = ldq_p(mem_buf); |
51 | |
52 | if (n < 31) { |
53 | /* Core integer register. */ |
54 | env->xregs[n] = tmp; |
55 | return 8; |
56 | } |
57 | switch (n) { |
58 | case 31: |
59 | env->xregs[31] = tmp; |
60 | return 8; |
61 | case 32: |
62 | env->pc = tmp; |
63 | return 8; |
64 | case 33: |
65 | /* CPSR */ |
66 | pstate_write(env, tmp); |
67 | return 4; |
68 | } |
69 | /* Unknown register. */ |
70 | return 0; |
71 | } |
72 | |