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 */
cpu_single_step(CPUState * cpu,int enabled)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
cpu_abort(CPUState * cpu,const char * fmt,...)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
target_big_endian(void)90 bool target_big_endian(void)
91 {
92 return TARGET_BIG_ENDIAN;
93 }
94