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 2.1 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 "exec/gdbstub.h" 23 24 int m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) 25 { 26 M68kCPU *cpu = M68K_CPU(cs); 27 CPUM68KState *env = &cpu->env; 28 29 if (n < 8) { 30 /* D0-D7 */ 31 return gdb_get_reg32(mem_buf, env->dregs[n]); 32 } else if (n < 16) { 33 /* A0-A7 */ 34 return gdb_get_reg32(mem_buf, env->aregs[n - 8]); 35 } else { 36 switch (n) { 37 case 16: 38 return gdb_get_reg32(mem_buf, env->sr); 39 case 17: 40 return gdb_get_reg32(mem_buf, env->pc); 41 } 42 } 43 /* FP registers not included here because they vary between 44 ColdFire and m68k. Use XML bits for these. */ 45 return 0; 46 } 47 48 int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 49 { 50 M68kCPU *cpu = M68K_CPU(cs); 51 CPUM68KState *env = &cpu->env; 52 uint32_t tmp; 53 54 tmp = ldl_p(mem_buf); 55 56 if (n < 8) { 57 /* D0-D7 */ 58 env->dregs[n] = tmp; 59 } else if (n < 16) { 60 /* A0-A7 */ 61 env->aregs[n - 8] = tmp; 62 } else { 63 switch (n) { 64 case 16: 65 cpu_m68k_set_sr(env, tmp); 66 break; 67 case 17: 68 env->pc = tmp; 69 break; 70 default: 71 return 0; 72 } 73 } 74 return 4; 75 } 76