Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 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 | */ |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 20 | #include "config.h" |
| 21 | #include "qemu-common.h" |
| 22 | #include "exec/gdbstub.h" |
Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 23 | |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 24 | int alpha_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 25 | { |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 26 | AlphaCPU *cpu = ALPHA_CPU(cs); |
| 27 | CPUAlphaState *env = &cpu->env; |
Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 28 | uint64_t val; |
| 29 | CPU_DoubleU d; |
| 30 | |
| 31 | switch (n) { |
| 32 | case 0 ... 30: |
| 33 | val = env->ir[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 | } |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 57 | return gdb_get_regl(mem_buf, val); |
Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 58 | } |
| 59 | |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 60 | int alpha_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 61 | { |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 62 | AlphaCPU *cpu = ALPHA_CPU(cs); |
| 63 | CPUAlphaState *env = &cpu->env; |
Andreas Färber | c3ce8eb | 2013-07-07 12:52:32 +0200 | [diff] [blame] | 64 | target_ulong tmp = ldtul_p(mem_buf); |
| 65 | CPU_DoubleU d; |
| 66 | |
| 67 | switch (n) { |
| 68 | case 0 ... 30: |
| 69 | env->ir[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 | } |