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 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 "qemu-common.h" 22 #include "cpu.h" 23 #include "exec/gdbstub.h" 24 25 int m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) 26 { 27 M68kCPU *cpu = M68K_CPU(cs); 28 CPUM68KState *env = &cpu->env; 29 30 if (n < 8) { 31 /* D0-D7 */ 32 return gdb_get_reg32(mem_buf, env->dregs[n]); 33 } else if (n < 16) { 34 /* A0-A7 */ 35 return gdb_get_reg32(mem_buf, env->aregs[n - 8]); 36 } else { 37 switch (n) { 38 case 16: 39 return gdb_get_reg32(mem_buf, env->sr); 40 case 17: 41 return gdb_get_reg32(mem_buf, env->pc); 42 } 43 } 44 /* FP registers not included here because they vary between 45 ColdFire and m68k. Use XML bits for these. */ 46 return 0; 47 } 48 49 int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 50 { 51 M68kCPU *cpu = M68K_CPU(cs); 52 CPUM68KState *env = &cpu->env; 53 uint32_t tmp; 54 55 tmp = ldl_p(mem_buf); 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: 66 env->sr = tmp; 67 break; 68 case 17: 69 env->pc = tmp; 70 break; 71 default: 72 return 0; 73 } 74 } 75 return 4; 76 } 77