Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 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 |
Thomas Huth | d749fb8 | 2019-01-29 14:43:58 +0100 | [diff] [blame] | 10 | * version 2.1 of the License, or (at your option) any later version. |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 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 | */ |
Peter Maydell | d841666 | 2016-01-26 18:17:23 +0000 | [diff] [blame] | 20 | #include "qemu/osdep.h" |
Paolo Bonzini | 33c1187 | 2016-03-15 16:58:45 +0100 | [diff] [blame] | 21 | #include "cpu.h" |
Alex Bennée | 4ea5fe9 | 2023-03-02 18:57:56 -0800 | [diff] [blame] | 22 | #include "gdbstub/helpers.h" |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 23 | |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 24 | int m68k_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 25 | { |
Philippe Mathieu-Daudé | e22a456 | 2024-01-29 17:44:58 +0100 | [diff] [blame] | 26 | CPUM68KState *env = cpu_env(cs); |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 27 | |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 28 | if (n < 8) { |
| 29 | /* D0-D7 */ |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 30 | return gdb_get_reg32(mem_buf, env->dregs[n]); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 31 | } else if (n < 16) { |
| 32 | /* A0-A7 */ |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 33 | return gdb_get_reg32(mem_buf, env->aregs[n - 8]); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 34 | } else { |
| 35 | switch (n) { |
| 36 | case 16: |
Lucien Murray-Pitts | bf1fa69 | 2019-06-09 19:51:54 +0900 | [diff] [blame] | 37 | /* SR is made of SR+CCR, CCR is many 1bit flags so uses helper */ |
| 38 | return gdb_get_reg32(mem_buf, env->sr | cpu_m68k_get_ccr(env)); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 39 | case 17: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 40 | return gdb_get_reg32(mem_buf, env->pc); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 41 | } |
| 42 | } |
Lucien Murray-Pitts | 808d77b | 2019-06-07 08:41:25 +0900 | [diff] [blame] | 43 | /* |
| 44 | * FP registers not included here because they vary between |
| 45 | * ColdFire and m68k. Use XML bits for these. |
| 46 | */ |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 47 | return 0; |
| 48 | } |
| 49 | |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 50 | int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 51 | { |
Philippe Mathieu-Daudé | e22a456 | 2024-01-29 17:44:58 +0100 | [diff] [blame] | 52 | CPUM68KState *env = cpu_env(cs); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 53 | uint32_t tmp; |
| 54 | |
Philippe Mathieu-Daudé | 3a76d30 | 2024-10-04 13:30:34 -0300 | [diff] [blame] | 55 | tmp = ldl_be_p(mem_buf); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 56 | |
| 57 | if (n < 8) { |
| 58 | /* D0-D7 */ |
| 59 | env->dregs[n] = tmp; |
| 60 | } else if (n < 16) { |
| 61 | /* A0-A7 */ |
| 62 | env->aregs[n - 8] = tmp; |
| 63 | } else { |
| 64 | switch (n) { |
| 65 | case 16: |
Laurent Vivier | 6e22b28 | 2018-01-04 02:29:12 +0100 | [diff] [blame] | 66 | cpu_m68k_set_sr(env, tmp); |
Andreas Färber | c88de14 | 2013-07-07 12:33:56 +0200 | [diff] [blame] | 67 | break; |
| 68 | case 17: |
| 69 | env->pc = tmp; |
| 70 | break; |
| 71 | default: |
| 72 | return 0; |
| 73 | } |
| 74 | } |
| 75 | return 4; |
| 76 | } |