1 /* 2 * SuperH 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 /* Hint: Use "set architecture sh4" in GDB to see fpu registers */ 25 /* FIXME: We should use XML for this. */ 26 27 int superh_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) 28 { 29 SuperHCPU *cpu = SUPERH_CPU(cs); 30 CPUSH4State *env = &cpu->env; 31 32 switch (n) { 33 case 0 ... 7: 34 if ((env->sr & (1u << SR_MD)) && (env->sr & (1u << SR_RB))) { 35 return gdb_get_regl(mem_buf, env->gregs[n + 16]); 36 } else { 37 return gdb_get_regl(mem_buf, env->gregs[n]); 38 } 39 case 8 ... 15: 40 return gdb_get_regl(mem_buf, env->gregs[n]); 41 case 16: 42 return gdb_get_regl(mem_buf, env->pc); 43 case 17: 44 return gdb_get_regl(mem_buf, env->pr); 45 case 18: 46 return gdb_get_regl(mem_buf, env->gbr); 47 case 19: 48 return gdb_get_regl(mem_buf, env->vbr); 49 case 20: 50 return gdb_get_regl(mem_buf, env->mach); 51 case 21: 52 return gdb_get_regl(mem_buf, env->macl); 53 case 22: 54 return gdb_get_regl(mem_buf, cpu_read_sr(env)); 55 case 23: 56 return gdb_get_regl(mem_buf, env->fpul); 57 case 24: 58 return gdb_get_regl(mem_buf, env->fpscr); 59 case 25 ... 40: 60 if (env->fpscr & FPSCR_FR) { 61 return gdb_get_reg32(mem_buf, env->fregs[n - 9]); 62 } 63 return gdb_get_reg32(mem_buf, env->fregs[n - 25]); 64 case 41: 65 return gdb_get_regl(mem_buf, env->ssr); 66 case 42: 67 return gdb_get_regl(mem_buf, env->spc); 68 case 43 ... 50: 69 return gdb_get_regl(mem_buf, env->gregs[n - 43]); 70 case 51 ... 58: 71 return gdb_get_regl(mem_buf, env->gregs[n - (51 - 16)]); 72 } 73 74 return 0; 75 } 76 77 int superh_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 78 { 79 SuperHCPU *cpu = SUPERH_CPU(cs); 80 CPUSH4State *env = &cpu->env; 81 82 switch (n) { 83 case 0 ... 7: 84 if ((env->sr & (1u << SR_MD)) && (env->sr & (1u << SR_RB))) { 85 env->gregs[n + 16] = ldl_p(mem_buf); 86 } else { 87 env->gregs[n] = ldl_p(mem_buf); 88 } 89 break; 90 case 8 ... 15: 91 env->gregs[n] = ldl_p(mem_buf); 92 break; 93 case 16: 94 env->pc = ldl_p(mem_buf); 95 break; 96 case 17: 97 env->pr = ldl_p(mem_buf); 98 break; 99 case 18: 100 env->gbr = ldl_p(mem_buf); 101 break; 102 case 19: 103 env->vbr = ldl_p(mem_buf); 104 break; 105 case 20: 106 env->mach = ldl_p(mem_buf); 107 break; 108 case 21: 109 env->macl = ldl_p(mem_buf); 110 break; 111 case 22: 112 cpu_write_sr(env, ldl_p(mem_buf)); 113 break; 114 case 23: 115 env->fpul = ldl_p(mem_buf); 116 break; 117 case 24: 118 env->fpscr = ldl_p(mem_buf); 119 break; 120 case 25 ... 40: 121 if (env->fpscr & FPSCR_FR) { 122 env->fregs[n - 9] = ldl_p(mem_buf); 123 } else { 124 env->fregs[n - 25] = ldl_p(mem_buf); 125 } 126 break; 127 case 41: 128 env->ssr = ldl_p(mem_buf); 129 break; 130 case 42: 131 env->spc = ldl_p(mem_buf); 132 break; 133 case 43 ... 50: 134 env->gregs[n - 43] = ldl_p(mem_buf); 135 break; 136 case 51 ... 58: 137 env->gregs[n - (51 - 16)] = ldl_p(mem_buf); 138 break; 139 default: 140 return 0; 141 } 142 143 return 4; 144 } 145