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_ulong 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 return gdb_get_regl(mem_buf, val); 65 } 66 67 int hppa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 68 { 69 HPPACPU *cpu = HPPA_CPU(cs); 70 CPUHPPAState *env = &cpu->env; 71 target_ulong val = ldtul_p(mem_buf); 72 73 switch (n) { 74 case 0: 75 cpu_hppa_put_psw(env, val); 76 break; 77 case 1 ... 31: 78 env->gr[n] = val; 79 break; 80 case 32: 81 env->sar = val; 82 break; 83 case 33: 84 env->iaoq_f = val; 85 break; 86 case 35: 87 env->iaoq_b = val; 88 case 59: 89 env->cr26 = val; 90 break; 91 case 60: 92 env->cr27 = val; 93 break; 94 case 64: 95 env->fr[0] = deposit64(env->fr[0], 32, 32, val); 96 cpu_hppa_loaded_fr0(env); 97 break; 98 case 65 ... 127: 99 { 100 uint64_t *fr = &env->fr[(n - 64) / 2]; 101 *fr = deposit64(*fr, val, (n & 1 ? 0 : 32), 32); 102 } 103 break; 104 default: 105 if (n >= 128) { 106 return 0; 107 } 108 break; 109 } 110 return sizeof(target_ulong); 111 } 112