1 /* 2 * ARM gdb server stub: AArch64 specific functions. 3 * 4 * Copyright (c) 2013 SUSE LINUX Products GmbH 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 #include "qemu/osdep.h" 20 #include "qemu-common.h" 21 #include "cpu.h" 22 #include "exec/gdbstub.h" 23 24 int aarch64_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) 25 { 26 ARMCPU *cpu = ARM_CPU(cs); 27 CPUARMState *env = &cpu->env; 28 29 if (n < 31) { 30 /* Core integer register. */ 31 return gdb_get_reg64(mem_buf, env->xregs[n]); 32 } 33 switch (n) { 34 case 31: 35 return gdb_get_reg64(mem_buf, env->xregs[31]); 36 case 32: 37 return gdb_get_reg64(mem_buf, env->pc); 38 case 33: 39 return gdb_get_reg32(mem_buf, pstate_read(env)); 40 } 41 /* Unknown register. */ 42 return 0; 43 } 44 45 int aarch64_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) 46 { 47 ARMCPU *cpu = ARM_CPU(cs); 48 CPUARMState *env = &cpu->env; 49 uint64_t tmp; 50 51 tmp = ldq_p(mem_buf); 52 53 if (n < 31) { 54 /* Core integer register. */ 55 env->xregs[n] = tmp; 56 return 8; 57 } 58 switch (n) { 59 case 31: 60 env->xregs[31] = tmp; 61 return 8; 62 case 32: 63 env->pc = tmp; 64 return 8; 65 case 33: 66 /* CPSR */ 67 pstate_write(env, tmp); 68 return 4; 69 } 70 /* Unknown register. */ 71 return 0; 72 } 73