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 /* SR is made of SR+CCR, CCR is many 1bit flags so uses helper */ 39 return gdb_get_reg32(mem_buf, env->sr | cpu_m68k_get_ccr(env)); 40 case 17: 41 return gdb_get_reg32(mem_buf, env->pc); 42 } 43 } 44 /* 45 * FP registers not included here because they vary between 46 * ColdFire and m68k. Use XML bits for these. 47 */ 48 return 0; 49 } 50 51 int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 52 { 53 M68kCPU *cpu = M68K_CPU(cs); 54 CPUM68KState *env = &cpu->env; 55 uint32_t tmp; 56 57 tmp = ldl_p(mem_buf); 58 59 if (n < 8) { 60 /* D0-D7 */ 61 env->dregs[n] = tmp; 62 } else if (n < 16) { 63 /* A0-A7 */ 64 env->aregs[n - 8] = tmp; 65 } else { 66 switch (n) { 67 case 16: 68 cpu_m68k_set_sr(env, tmp); 69 break; 70 case 17: 71 env->pc = tmp; 72 break; 73 default: 74 return 0; 75 } 76 } 77 return 4; 78 } 79