1 /* 2 * HPPA gdb server stub 3 * 4 * Copyright (c) 2016 Richard Henderson <rth@twiddle.net> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "qemu-common.h" 22 #include "cpu.h" 23 #include "exec/gdbstub.h" 24 25 int hppa_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) 26 { 27 HPPACPU *cpu = HPPA_CPU(cs); 28 CPUHPPAState *env = &cpu->env; 29 target_ureg val; 30 31 switch (n) { 32 case 0: 33 val = cpu_hppa_get_psw(env); 34 break; 35 case 1 ... 31: 36 val = env->gr[n]; 37 break; 38 case 32: 39 val = env->sar; 40 break; 41 case 33: 42 val = env->iaoq_f; 43 break; 44 case 35: 45 val = env->iaoq_b; 46 break; 47 case 59: 48 val = env->cr26; 49 break; 50 case 60: 51 val = env->cr27; 52 break; 53 case 64 ... 127: 54 val = extract64(env->fr[(n - 64) / 2], (n & 1 ? 0 : 32), 32); 55 break; 56 default: 57 if (n < 128) { 58 val = 0; 59 } else { 60 return 0; 61 } 62 break; 63 } 64 65 if (TARGET_REGISTER_BITS == 64) { 66 return gdb_get_reg64(mem_buf, val); 67 } else { 68 return gdb_get_reg32(mem_buf, val); 69 } 70 } 71 72 int hppa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 73 { 74 HPPACPU *cpu = HPPA_CPU(cs); 75 CPUHPPAState *env = &cpu->env; 76 target_ureg val; 77 78 if (TARGET_REGISTER_BITS == 64) { 79 val = ldq_p(mem_buf); 80 } else { 81 val = ldl_p(mem_buf); 82 } 83 84 switch (n) { 85 case 0: 86 cpu_hppa_put_psw(env, val); 87 break; 88 case 1 ... 31: 89 env->gr[n] = val; 90 break; 91 case 32: 92 env->sar = val; 93 break; 94 case 33: 95 env->iaoq_f = val; 96 break; 97 case 35: 98 env->iaoq_b = val; 99 break; 100 case 59: 101 env->cr26 = val; 102 break; 103 case 60: 104 env->cr27 = val; 105 break; 106 case 64: 107 env->fr[0] = deposit64(env->fr[0], 32, 32, val); 108 cpu_hppa_loaded_fr0(env); 109 break; 110 case 65 ... 127: 111 { 112 uint64_t *fr = &env->fr[(n - 64) / 2]; 113 *fr = deposit64(*fr, val, (n & 1 ? 0 : 32), 32); 114 } 115 break; 116 default: 117 if (n >= 128) { 118 return 0; 119 } 120 break; 121 } 122 return sizeof(target_ureg); 123 } 124