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