4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qemu/help-texts.h"
22 #include "qemu/units.h"
23 #include "qemu/accel.h"
24 #include "qemu-version.h"
25 #include <sys/syscall.h>
26 #include <sys/resource.h>
28 #include <linux/binfmts.h>
30 #include "qapi/error.h"
32 #include "user-internals.h"
33 #include "qemu/path.h"
34 #include "qemu/queue.h"
35 #include "qemu/config-file.h"
36 #include "qemu/cutils.h"
37 #include "qemu/error-report.h"
38 #include "qemu/help_option.h"
39 #include "qemu/module.h"
40 #include "qemu/plugin.h"
41 #include "exec/exec-all.h"
42 #include "exec/gdbstub.h"
44 #include "qemu/timer.h"
45 #include "qemu/envlist.h"
46 #include "qemu/guest-random.h"
48 #include "trace/control.h"
49 #include "target_elf.h"
50 #include "cpu_loop-common.h"
51 #include "crypto/init.h"
53 #include "signal-common.h"
55 #include "user-mmap.h"
56 #include "accel/tcg/perf.h"
58 #ifdef CONFIG_SEMIHOSTING
59 #include "semihosting/semihost.h"
62 #ifndef AT_FLAGS_PRESERVE_ARGV0
63 #define AT_FLAGS_PRESERVE_ARGV0_BIT 0
64 #define AT_FLAGS_PRESERVE_ARGV0 (1 << AT_FLAGS_PRESERVE_ARGV0_BIT)
70 static const char *argv0
;
71 static const char *gdbstub
;
72 static envlist_t
*envlist
;
73 static const char *cpu_model
;
74 static const char *cpu_type
;
75 static const char *seed_optarg
;
76 unsigned long mmap_min_addr
;
81 * Used to implement backwards-compatibility for the `-strace`, and
82 * QEMU_STRACE options. Without this, the QEMU_LOG can be overwritten by
83 * -strace, or vice versa.
85 static bool enable_strace
;
88 * The last log mask given by the user in an environment variable or argument.
89 * Used to support command line arguments overriding environment variables.
91 static int last_log_mask
;
92 static const char *last_log_filename
;
95 * When running 32-on-64 we should make sure we can fit all of the possible
96 * guest address space into a contiguous chunk of virtual host memory.
98 * This way we will never overlap with our own libraries or binaries or stack
99 * or anything else that QEMU maps.
101 * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
102 * of the address for the kernel. Some cpus rely on this and user space
103 * uses the high bit(s) for pointer tagging and the like. For them, we
104 * must preserve the expected address space.
106 #ifndef MAX_RESERVED_VA
107 # if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
108 # if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
109 (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
110 /* There are a number of places where we assign reserved_va to a variable
111 of type abi_ulong and expect it to fit. Avoid the last page. */
112 # define MAX_RESERVED_VA(CPU) (0xfffffffful & TARGET_PAGE_MASK)
114 # define MAX_RESERVED_VA(CPU) (1ul << TARGET_VIRT_ADDR_SPACE_BITS)
117 # define MAX_RESERVED_VA(CPU) 0
121 unsigned long reserved_va
;
123 static void usage(int exitcode
);
125 static const char *interp_prefix
= CONFIG_QEMU_INTERP_PREFIX
;
126 const char *qemu_uname_release
;
128 #if !defined(TARGET_DEFAULT_STACK_SIZE)
129 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
130 we allocate a bigger stack. Need a better solution, for example
131 by remapping the process stack directly at the right place */
132 #define TARGET_DEFAULT_STACK_SIZE 8 * 1024 * 1024UL
135 unsigned long guest_stack_size
= TARGET_DEFAULT_STACK_SIZE
;
137 /***********************************************************/
138 /* Helper routines for implementing atomic operations. */
140 /* Make sure everything is in a consistent state for calling fork(). */
141 void fork_start(void)
146 qemu_plugin_user_prefork_lock();
149 void fork_end(int child
)
151 qemu_plugin_user_postfork(child
);
152 mmap_fork_end(child
);
154 CPUState
*cpu
, *next_cpu
;
155 /* Child processes created by fork() only have a single thread.
156 Discard information about the parent threads. */
157 CPU_FOREACH_SAFE(cpu
, next_cpu
) {
158 if (cpu
!= thread_cpu
) {
159 QTAILQ_REMOVE_RCU(&cpus
, cpu
, node
);
162 qemu_init_cpu_list();
163 gdbserver_fork(thread_cpu
);
168 * qemu_init_cpu_list() reinitialized the child exclusive state, but we
169 * also need to keep current_cpu consistent, so call end_exclusive() for
170 * both child and parent.
175 __thread CPUState
*thread_cpu
;
177 bool qemu_cpu_is_self(CPUState
*cpu
)
179 return thread_cpu
== cpu
;
182 void qemu_cpu_kick(CPUState
*cpu
)
187 void task_settid(TaskState
*ts
)
189 if (ts
->ts_tid
== 0) {
190 ts
->ts_tid
= (pid_t
)syscall(SYS_gettid
);
194 void stop_all_tasks(void)
197 * We trust that when using NPTL, start_exclusive()
198 * handles thread stopping correctly.
203 /* Assumes contents are already zeroed. */
204 void init_task_state(TaskState
*ts
)
210 ts
->sigaltstack_used
= (struct target_sigaltstack
) {
213 .ss_flags
= TARGET_SS_DISABLE
,
216 /* Capture task start time relative to system boot */
218 ticks_per_sec
= sysconf(_SC_CLK_TCK
);
220 if ((ticks_per_sec
> 0) && !clock_gettime(CLOCK_BOOTTIME
, &bt
)) {
221 /* start_boottime is expressed in clock ticks */
222 ts
->start_boottime
= bt
.tv_sec
* (uint64_t) ticks_per_sec
;
223 ts
->start_boottime
+= bt
.tv_nsec
* (uint64_t) ticks_per_sec
/
224 NANOSECONDS_PER_SECOND
;
228 CPUArchState
*cpu_copy(CPUArchState
*env
)
230 CPUState
*cpu
= env_cpu(env
);
231 CPUState
*new_cpu
= cpu_create(cpu_type
);
232 CPUArchState
*new_env
= new_cpu
->env_ptr
;
235 /* Reset non arch specific state */
238 new_cpu
->tcg_cflags
= cpu
->tcg_cflags
;
239 memcpy(new_env
, env
, sizeof(CPUArchState
));
241 /* Clone all break/watchpoints.
242 Note: Once we support ptrace with hw-debug register access, make sure
243 BP_CPU break/watchpoints are handled correctly on clone. */
244 QTAILQ_INIT(&new_cpu
->breakpoints
);
245 QTAILQ_FOREACH(bp
, &cpu
->breakpoints
, entry
) {
246 cpu_breakpoint_insert(new_cpu
, bp
->pc
, bp
->flags
, NULL
);
252 static void handle_arg_help(const char *arg
)
257 static void handle_arg_log(const char *arg
)
259 last_log_mask
= qemu_str_to_log_mask(arg
);
260 if (!last_log_mask
) {
261 qemu_print_log_usage(stdout
);
266 static void handle_arg_dfilter(const char *arg
)
268 qemu_set_dfilter_ranges(arg
, &error_fatal
);
271 static void handle_arg_log_filename(const char *arg
)
273 last_log_filename
= arg
;
276 static void handle_arg_set_env(const char *arg
)
280 while ((token
= strsep(&p
, ",")) != NULL
) {
281 if (envlist_setenv(envlist
, token
) != 0) {
288 static void handle_arg_unset_env(const char *arg
)
292 while ((token
= strsep(&p
, ",")) != NULL
) {
293 if (envlist_unsetenv(envlist
, token
) != 0) {
300 static void handle_arg_argv0(const char *arg
)
305 static void handle_arg_stack_size(const char *arg
)
308 guest_stack_size
= strtoul(arg
, &p
, 0);
309 if (guest_stack_size
== 0) {
314 guest_stack_size
*= MiB
;
315 } else if (*p
== 'k' || *p
== 'K') {
316 guest_stack_size
*= KiB
;
320 static void handle_arg_ld_prefix(const char *arg
)
322 interp_prefix
= strdup(arg
);
325 static void handle_arg_pagesize(const char *arg
)
327 qemu_host_page_size
= atoi(arg
);
328 if (qemu_host_page_size
== 0 ||
329 (qemu_host_page_size
& (qemu_host_page_size
- 1)) != 0) {
330 fprintf(stderr
, "page size must be a power of two\n");
335 static void handle_arg_seed(const char *arg
)
340 static void handle_arg_gdb(const char *arg
)
342 gdbstub
= g_strdup(arg
);
345 static void handle_arg_uname(const char *arg
)
347 qemu_uname_release
= strdup(arg
);
350 static void handle_arg_cpu(const char *arg
)
352 cpu_model
= strdup(arg
);
353 if (cpu_model
== NULL
|| is_help_option(cpu_model
)) {
354 /* XXX: implement xxx_cpu_list for targets that still miss it */
355 #if defined(cpu_list)
362 static void handle_arg_guest_base(const char *arg
)
364 guest_base
= strtol(arg
, NULL
, 0);
365 have_guest_base
= true;
368 static void handle_arg_reserved_va(const char *arg
)
372 reserved_va
= strtoul(arg
, &p
, 0);
386 unsigned long unshifted
= reserved_va
;
388 reserved_va
<<= shift
;
389 if (reserved_va
>> shift
!= unshifted
) {
390 fprintf(stderr
, "Reserved virtual address too big\n");
395 fprintf(stderr
, "Unrecognised -R size suffix '%s'\n", p
);
400 static void handle_arg_singlestep(const char *arg
)
405 static void handle_arg_strace(const char *arg
)
407 enable_strace
= true;
410 static void handle_arg_version(const char *arg
)
412 printf("qemu-" TARGET_NAME
" version " QEMU_FULL_VERSION
413 "\n" QEMU_COPYRIGHT
"\n");
417 static void handle_arg_trace(const char *arg
)
419 trace_opt_parse(arg
);
422 #if defined(TARGET_XTENSA)
423 static void handle_arg_abi_call0(const char *arg
)
425 xtensa_set_abi_call0();
429 static void handle_arg_perfmap(const char *arg
)
431 perf_enable_perfmap();
434 static void handle_arg_jitdump(const char *arg
)
436 perf_enable_jitdump();
439 static QemuPluginList plugins
= QTAILQ_HEAD_INITIALIZER(plugins
);
442 static void handle_arg_plugin(const char *arg
)
444 qemu_plugin_opt_parse(arg
, &plugins
);
448 struct qemu_argument
{
452 void (*handle_opt
)(const char *arg
);
457 static const struct qemu_argument arg_table
[] = {
458 {"h", "", false, handle_arg_help
,
459 "", "print this help"},
460 {"help", "", false, handle_arg_help
,
462 {"g", "QEMU_GDB", true, handle_arg_gdb
,
463 "port", "wait gdb connection to 'port'"},
464 {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix
,
465 "path", "set the elf interpreter prefix to 'path'"},
466 {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size
,
467 "size", "set the stack size to 'size' bytes"},
468 {"cpu", "QEMU_CPU", true, handle_arg_cpu
,
469 "model", "select CPU (-cpu help for list)"},
470 {"E", "QEMU_SET_ENV", true, handle_arg_set_env
,
471 "var=value", "sets targets environment variable (see below)"},
472 {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env
,
473 "var", "unsets targets environment variable (see below)"},
474 {"0", "QEMU_ARGV0", true, handle_arg_argv0
,
475 "argv0", "forces target process argv[0] to be 'argv0'"},
476 {"r", "QEMU_UNAME", true, handle_arg_uname
,
477 "uname", "set qemu uname release string to 'uname'"},
478 {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base
,
479 "address", "set guest_base address to 'address'"},
480 {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va
,
481 "size", "reserve 'size' bytes for guest virtual address space"},
482 {"d", "QEMU_LOG", true, handle_arg_log
,
483 "item[,...]", "enable logging of specified items "
484 "(use '-d help' for a list of items)"},
485 {"dfilter", "QEMU_DFILTER", true, handle_arg_dfilter
,
486 "range[,...]","filter logging based on address range"},
487 {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename
,
488 "logfile", "write logs to 'logfile' (default stderr)"},
489 {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize
,
490 "pagesize", "set the host page size to 'pagesize'"},
491 {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep
,
492 "", "run in singlestep mode"},
493 {"strace", "QEMU_STRACE", false, handle_arg_strace
,
494 "", "log system calls"},
495 {"seed", "QEMU_RAND_SEED", true, handle_arg_seed
,
496 "", "Seed for pseudo-random number generator"},
497 {"trace", "QEMU_TRACE", true, handle_arg_trace
,
498 "", "[[enable=]<pattern>][,events=<file>][,file=<file>]"},
500 {"plugin", "QEMU_PLUGIN", true, handle_arg_plugin
,
501 "", "[file=]<file>[,<argname>=<argvalue>]"},
503 {"version", "QEMU_VERSION", false, handle_arg_version
,
504 "", "display version information and exit"},
505 #if defined(TARGET_XTENSA)
506 {"xtensa-abi-call0", "QEMU_XTENSA_ABI_CALL0", false, handle_arg_abi_call0
,
507 "", "assume CALL0 Xtensa ABI"},
509 {"perfmap", "QEMU_PERFMAP", false, handle_arg_perfmap
,
510 "", "Generate a /tmp/perf-${pid}.map file for perf"},
511 {"jitdump", "QEMU_JITDUMP", false, handle_arg_jitdump
,
512 "", "Generate a jit-${pid}.dump file for perf"},
513 {NULL
, NULL
, false, NULL
, NULL
, NULL
}
516 static void usage(int exitcode
)
518 const struct qemu_argument
*arginfo
;
522 printf("usage: qemu-" TARGET_NAME
" [options] program [arguments...]\n"
523 "Linux CPU emulator (compiled for " TARGET_NAME
" emulation)\n"
525 "Options and associated environment variables:\n"
528 /* Calculate column widths. We must always have at least enough space
529 * for the column header.
531 maxarglen
= strlen("Argument");
532 maxenvlen
= strlen("Env-variable");
534 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
535 int arglen
= strlen(arginfo
->argv
);
536 if (arginfo
->has_arg
) {
537 arglen
+= strlen(arginfo
->example
) + 1;
539 if (strlen(arginfo
->env
) > maxenvlen
) {
540 maxenvlen
= strlen(arginfo
->env
);
542 if (arglen
> maxarglen
) {
547 printf("%-*s %-*s Description\n", maxarglen
+1, "Argument",
548 maxenvlen
, "Env-variable");
550 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
551 if (arginfo
->has_arg
) {
552 printf("-%s %-*s %-*s %s\n", arginfo
->argv
,
553 (int)(maxarglen
- strlen(arginfo
->argv
) - 1),
554 arginfo
->example
, maxenvlen
, arginfo
->env
, arginfo
->help
);
556 printf("-%-*s %-*s %s\n", maxarglen
, arginfo
->argv
,
557 maxenvlen
, arginfo
->env
,
564 "QEMU_LD_PREFIX = %s\n"
565 "QEMU_STACK_SIZE = %ld byte\n",
570 "You can use -E and -U options or the QEMU_SET_ENV and\n"
571 "QEMU_UNSET_ENV environment variables to set and unset\n"
572 "environment variables for the target process.\n"
573 "It is possible to provide several variables by separating them\n"
574 "by commas in getsubopt(3) style. Additionally it is possible to\n"
575 "provide the -E and -U options multiple times.\n"
576 "The following lines are equivalent:\n"
577 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
578 " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
579 " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
580 "Note that if you provide several changes to a single variable\n"
581 "the last change will stay in effect.\n"
583 QEMU_HELP_BOTTOM
"\n");
588 static int parse_args(int argc
, char **argv
)
592 const struct qemu_argument
*arginfo
;
594 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
595 if (arginfo
->env
== NULL
) {
599 r
= getenv(arginfo
->env
);
601 arginfo
->handle_opt(r
);
607 if (optind
>= argc
) {
616 if (!strcmp(r
, "-")) {
619 /* Treat --foo the same as -foo. */
624 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
625 if (!strcmp(r
, arginfo
->argv
)) {
626 if (arginfo
->has_arg
) {
627 if (optind
>= argc
) {
628 (void) fprintf(stderr
,
629 "qemu: missing argument for option '%s'\n", r
);
632 arginfo
->handle_opt(argv
[optind
]);
635 arginfo
->handle_opt(NULL
);
641 /* no option matched the current argv */
642 if (arginfo
->handle_opt
== NULL
) {
643 (void) fprintf(stderr
, "qemu: unknown option '%s'\n", r
);
648 if (optind
>= argc
) {
649 (void) fprintf(stderr
, "qemu: no user program specified\n");
653 exec_path
= argv
[optind
];
658 int main(int argc
, char **argv
, char **envp
)
660 struct target_pt_regs regs1
, *regs
= ®s1
;
661 struct image_info info1
, *info
= &info1
;
662 struct linux_binprm bprm
;
667 char **target_environ
, **wrk
;
673 unsigned long max_reserved_va
;
677 module_call_init(MODULE_INIT_TRACE
);
678 qemu_init_cpu_list();
679 module_call_init(MODULE_INIT_QOM
);
681 envlist
= envlist_create();
683 /* add current environment into the list */
684 for (wrk
= environ
; *wrk
!= NULL
; wrk
++) {
685 (void) envlist_setenv(envlist
, *wrk
);
688 /* Read the stack limit from the kernel. If it's "unlimited",
689 then we can do little else besides use the default. */
692 if (getrlimit(RLIMIT_STACK
, &lim
) == 0
693 && lim
.rlim_cur
!= RLIM_INFINITY
694 && lim
.rlim_cur
== (target_long
)lim
.rlim_cur
695 && lim
.rlim_cur
> guest_stack_size
) {
696 guest_stack_size
= lim
.rlim_cur
;
702 qemu_add_opts(&qemu_trace_opts
);
703 qemu_plugin_add_opts();
705 optind
= parse_args(argc
, argv
);
707 qemu_set_log_filename_flags(last_log_filename
,
708 last_log_mask
| (enable_strace
* LOG_STRACE
),
711 if (!trace_init_backends()) {
715 qemu_plugin_load_list(&plugins
, &error_fatal
);
718 memset(regs
, 0, sizeof(struct target_pt_regs
));
720 /* Zero out image_info */
721 memset(info
, 0, sizeof(struct image_info
));
723 memset(&bprm
, 0, sizeof (bprm
));
725 /* Scan interp_prefix dir for replacement files. */
726 init_paths(interp_prefix
);
728 init_qemu_uname_release();
731 * Manage binfmt-misc open-binary flag
733 execfd
= qemu_getauxval(AT_EXECFD
);
735 execfd
= open(exec_path
, O_RDONLY
);
737 printf("Error while loading %s: %s\n", exec_path
, strerror(errno
));
743 * get binfmt_misc flags
745 preserve_argv0
= !!(qemu_getauxval(AT_FLAGS
) & AT_FLAGS_PRESERVE_ARGV0
);
748 * Manage binfmt-misc preserve-arg[0] flag
749 * argv[optind] full path to the binary
750 * argv[optind + 1] original argv[0]
752 if (optind
+ 1 < argc
&& preserve_argv0
) {
756 if (cpu_model
== NULL
) {
757 cpu_model
= cpu_get_model(get_elf_eflags(execfd
));
759 cpu_type
= parse_cpu_option(cpu_model
);
761 /* init tcg before creating CPUs and to get qemu_host_page_size */
763 AccelClass
*ac
= ACCEL_GET_CLASS(current_accel());
765 accel_init_interfaces(ac
);
766 ac
->init_machine(NULL
);
768 cpu
= cpu_create(cpu_type
);
774 * Reserving too much vm space via mmap can run into problems
775 * with rlimits, oom due to page table creation, etc. We will
776 * still try it, if directed by the command-line option, but
779 max_reserved_va
= MAX_RESERVED_VA(cpu
);
780 if (reserved_va
!= 0) {
781 if (max_reserved_va
&& reserved_va
> max_reserved_va
) {
782 fprintf(stderr
, "Reserved virtual address too big\n");
785 } else if (HOST_LONG_BITS
== 64 && TARGET_VIRT_ADDR_SPACE_BITS
<= 32) {
787 * reserved_va must be aligned with the host page size
788 * as it is used with mmap()
790 reserved_va
= max_reserved_va
& qemu_host_page_mask
;
795 if (seed_optarg
!= NULL
) {
796 qemu_guest_random_seed_main(seed_optarg
, &err
);
801 error_reportf_err(err
, "cannot initialize crypto: ");
806 target_environ
= envlist_to_environ(envlist
, NULL
);
807 envlist_free(envlist
);
810 * Read in mmap_min_addr kernel parameter. This value is used
811 * When loading the ELF image to determine whether guest_base
812 * is needed. It is also used in mmap_find_vma.
817 if ((fp
= fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL
) {
819 if (fscanf(fp
, "%lu", &tmp
) == 1 && tmp
!= 0) {
821 qemu_log_mask(CPU_LOG_PAGE
, "host mmap_min_addr=0x%lx\n",
829 * We prefer to not make NULL pointers accessible to QEMU.
830 * If we're in a chroot with no /proc, fall back to 1 page.
832 if (mmap_min_addr
== 0) {
833 mmap_min_addr
= qemu_host_page_size
;
834 qemu_log_mask(CPU_LOG_PAGE
,
835 "host mmap_min_addr=0x%lx (fallback)\n",
840 * Prepare copy of argv vector for target.
842 target_argc
= argc
- optind
;
843 target_argv
= calloc(target_argc
+ 1, sizeof (char *));
844 if (target_argv
== NULL
) {
845 (void) fprintf(stderr
, "Unable to allocate memory for target_argv\n");
850 * If argv0 is specified (using '-0' switch) we replace
851 * argv[0] pointer with the given one.
855 target_argv
[i
++] = strdup(argv0
);
857 for (; i
< target_argc
; i
++) {
858 target_argv
[i
] = strdup(argv
[optind
+ i
]);
860 target_argv
[target_argc
] = NULL
;
862 ts
= g_new0(TaskState
, 1);
864 /* build Task State */
872 ret
= loader_exec(execfd
, exec_path
, target_argv
, target_environ
, regs
,
875 printf("Error while loading %s: %s\n", exec_path
, strerror(-ret
));
879 for (wrk
= target_environ
; *wrk
; wrk
++) {
883 g_free(target_environ
);
885 if (qemu_loglevel_mask(CPU_LOG_PAGE
)) {
886 FILE *f
= qemu_log_trylock();
888 fprintf(f
, "guest_base %p\n", (void *)guest_base
);
889 fprintf(f
, "page layout changed following binary load\n");
892 fprintf(f
, "start_brk 0x" TARGET_ABI_FMT_lx
"\n",
894 fprintf(f
, "end_code 0x" TARGET_ABI_FMT_lx
"\n",
896 fprintf(f
, "start_code 0x" TARGET_ABI_FMT_lx
"\n",
898 fprintf(f
, "start_data 0x" TARGET_ABI_FMT_lx
"\n",
900 fprintf(f
, "end_data 0x" TARGET_ABI_FMT_lx
"\n",
902 fprintf(f
, "start_stack 0x" TARGET_ABI_FMT_lx
"\n",
904 fprintf(f
, "brk 0x" TARGET_ABI_FMT_lx
"\n",
906 fprintf(f
, "entry 0x" TARGET_ABI_FMT_lx
"\n",
908 fprintf(f
, "argv_start 0x" TARGET_ABI_FMT_lx
"\n",
910 fprintf(f
, "env_start 0x" TARGET_ABI_FMT_lx
"\n",
912 fprintf(f
, "auxv_start 0x" TARGET_ABI_FMT_lx
"\n",
918 target_set_brk(info
->brk
);
922 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
923 generating the prologue until now so that the prologue can take
924 the real value of GUEST_BASE into account. */
925 tcg_prologue_init(tcg_ctx
);
927 target_cpu_copy_regs(env
, regs
);
930 if (gdbserver_start(gdbstub
) < 0) {
931 fprintf(stderr
, "qemu: could not open gdbserver on %s\n",
935 gdb_handlesig(cpu
, 0);
938 #ifdef CONFIG_SEMIHOSTING
939 qemu_semihosting_guestfd_init();