| 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 2.1 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 "gdbstub/helpers.h" |
| 23 | |
| 24 | int alpha_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) |
| 25 | { |
| 26 | CPUAlphaState *env = cpu_env(cs); |
| 27 | uint64_t val; |
| 28 | CPU_DoubleU d; |
| 29 | |
| 30 | switch (n) { |
| 31 | case 0 ... 30: |
| 32 | val = cpu_alpha_load_gr(env, n); |
| 33 | break; |
| 34 | case 31: /* zero register */ |
| 35 | val = 0; |
| 36 | break; |
| 37 | case 32 ... 62: |
| 38 | d.d = env->fir[n - 32]; |
| 39 | val = d.ll; |
| 40 | break; |
| 41 | case 63: |
| 42 | val = cpu_alpha_load_fpcr(env); |
| 43 | break; |
| 44 | case 64: |
| 45 | val = env->pc; |
| 46 | break; |
| 47 | case 65: /* former Virtual Register (reserved as unassigned) */ |
| 48 | val = 0; |
| 49 | break; |
| 50 | case 66: /* PALcode Memory Slot */ |
| 51 | val = env->unique; |
| 52 | break; |
| 53 | default: |
| 54 | return 0; |
| 55 | } |
| 56 | return gdb_get_reg64(mem_buf, val); |
| 57 | } |
| 58 | |
| 59 | int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
| 60 | { |
| 61 | CPUAlphaState *env = cpu_env(cs); |
| 62 | uint64_t tmp = ldq_le_p(mem_buf); |
| 63 | CPU_DoubleU d; |
| 64 | |
| 65 | switch (n) { |
| 66 | case 0 ... 30: |
| 67 | cpu_alpha_store_gr(env, n, tmp); |
| 68 | break; |
| 69 | case 31: /* zero register */ |
| 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 65: /* former Virtual Register (reserved as unassigned) */ |
| 82 | break; |
| 83 | case 66: /* PALcode Memory Slot */ |
| 84 | env->unique = tmp; |
| 85 | break; |
| 86 | default: |
| 87 | return 0; |
| 88 | } |
| 89 | return 8; |
| 90 | } |