1 /* 2 * Target-specific parts of the CPU object 3 * 4 * Copyright (c) 2003 Fabrice Bellard 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 "cpu.h" 22 #include "system/accel-ops.h" 23 #include "system/cpus.h" 24 #include "exec/cpu-common.h" 25 #include "exec/tswap.h" 26 #include "exec/replay-core.h" 27 #include "exec/log.h" 28 #include "hw/core/cpu.h" 29 #include "trace/trace-root.h" 30 31 /* Validate correct placement of CPUArchState. */ 32 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, parent_obj) != 0); 33 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, env) != sizeof(CPUState)); 34 35 /* enable or disable single step mode. EXCP_DEBUG is returned by the 36 CPU loop after each instruction */ 37 void cpu_single_step(CPUState *cpu, int enabled) 38 { 39 if (cpu->singlestep_enabled != enabled) { 40 cpu->singlestep_enabled = enabled; 41 42 #if !defined(CONFIG_USER_ONLY) 43 const AccelOpsClass *ops = cpus_get_accel(); 44 if (ops->update_guest_debug) { 45 ops->update_guest_debug(cpu); 46 } 47 #endif 48 49 trace_breakpoint_singlestep(cpu->cpu_index, enabled); 50 } 51 } 52 53 void cpu_abort(CPUState *cpu, const char *fmt, ...) 54 { 55 va_list ap; 56 va_list ap2; 57 58 va_start(ap, fmt); 59 va_copy(ap2, ap); 60 fprintf(stderr, "qemu: fatal: "); 61 vfprintf(stderr, fmt, ap); 62 fprintf(stderr, "\n"); 63 cpu_dump_state(cpu, stderr, CPU_DUMP_FPU | CPU_DUMP_CCOP); 64 if (qemu_log_separate()) { 65 FILE *logfile = qemu_log_trylock(); 66 if (logfile) { 67 fprintf(logfile, "qemu: fatal: "); 68 vfprintf(logfile, fmt, ap2); 69 fprintf(logfile, "\n"); 70 cpu_dump_state(cpu, logfile, CPU_DUMP_FPU | CPU_DUMP_CCOP); 71 qemu_log_unlock(logfile); 72 } 73 } 74 va_end(ap2); 75 va_end(ap); 76 replay_finish(); 77 #if defined(CONFIG_USER_ONLY) 78 { 79 struct sigaction act; 80 sigfillset(&act.sa_mask); 81 act.sa_handler = SIG_DFL; 82 act.sa_flags = 0; 83 sigaction(SIGABRT, &act, NULL); 84 } 85 #endif 86 abort(); 87 } 88 89 #undef target_big_endian 90 bool target_big_endian(void) 91 { 92 return TARGET_BIG_ENDIAN; 93 } 94