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"
43 #include "gdbstub/user.h"
45 #include "qemu/timer.h"
46 #include "qemu/envlist.h"
47 #include "qemu/guest-random.h"
49 #include "trace/control.h"
50 #include "target_elf.h"
51 #include "cpu_loop-common.h"
52 #include "crypto/init.h"
54 #include "signal-common.h"
56 #include "user-mmap.h"
57 #include "accel/tcg/perf.h"
59 #ifdef CONFIG_SEMIHOSTING
60 #include "semihosting/semihost.h"
63 #ifndef AT_FLAGS_PRESERVE_ARGV0
64 #define AT_FLAGS_PRESERVE_ARGV0_BIT 0
65 #define AT_FLAGS_PRESERVE_ARGV0 (1 << AT_FLAGS_PRESERVE_ARGV0_BIT)
69 char real_exec_path
[PATH_MAX
];
72 static const char *argv0
;
73 static const char *gdbstub
;
74 static envlist_t
*envlist
;
75 static const char *cpu_model
;
76 static const char *cpu_type
;
77 static const char *seed_optarg
;
78 unsigned long mmap_min_addr
;
83 * Used to implement backwards-compatibility for the `-strace`, and
84 * QEMU_STRACE options. Without this, the QEMU_LOG can be overwritten by
85 * -strace, or vice versa.
87 static bool enable_strace
;
90 * The last log mask given by the user in an environment variable or argument.
91 * Used to support command line arguments overriding environment variables.
93 static int last_log_mask
;
94 static const char *last_log_filename
;
97 * When running 32-on-64 we should make sure we can fit all of the possible
98 * guest address space into a contiguous chunk of virtual host memory.
100 * This way we will never overlap with our own libraries or binaries or stack
101 * or anything else that QEMU maps.
103 * Many cpus reserve the high bit (or more than one for some 64-bit cpus)
104 * of the address for the kernel. Some cpus rely on this and user space
105 * uses the high bit(s) for pointer tagging and the like. For them, we
106 * must preserve the expected address space.
108 #ifndef MAX_RESERVED_VA
109 # if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
110 # if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \
111 (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32))
112 /* There are a number of places where we assign reserved_va to a variable
113 of type abi_ulong and expect it to fit. Avoid the last page. */
114 # define MAX_RESERVED_VA(CPU) (0xfffffffful & TARGET_PAGE_MASK)
116 # define MAX_RESERVED_VA(CPU) (1ul << TARGET_VIRT_ADDR_SPACE_BITS)
119 # define MAX_RESERVED_VA(CPU) 0
123 unsigned long reserved_va
;
125 static void usage(int exitcode
);
127 static const char *interp_prefix
= CONFIG_QEMU_INTERP_PREFIX
;
128 const char *qemu_uname_release
;
130 #if !defined(TARGET_DEFAULT_STACK_SIZE)
131 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
132 we allocate a bigger stack. Need a better solution, for example
133 by remapping the process stack directly at the right place */
134 #define TARGET_DEFAULT_STACK_SIZE 8 * 1024 * 1024UL
137 unsigned long guest_stack_size
= TARGET_DEFAULT_STACK_SIZE
;
139 /***********************************************************/
140 /* Helper routines for implementing atomic operations. */
142 /* Make sure everything is in a consistent state for calling fork(). */
143 void fork_start(void)
148 qemu_plugin_user_prefork_lock();
151 void fork_end(int child
)
153 qemu_plugin_user_postfork(child
);
154 mmap_fork_end(child
);
156 CPUState
*cpu
, *next_cpu
;
157 /* Child processes created by fork() only have a single thread.
158 Discard information about the parent threads. */
159 CPU_FOREACH_SAFE(cpu
, next_cpu
) {
160 if (cpu
!= thread_cpu
) {
161 QTAILQ_REMOVE_RCU(&cpus
, cpu
, node
);
164 qemu_init_cpu_list();
165 gdbserver_fork(thread_cpu
);
170 * qemu_init_cpu_list() reinitialized the child exclusive state, but we
171 * also need to keep current_cpu consistent, so call end_exclusive() for
172 * both child and parent.
177 __thread CPUState
*thread_cpu
;
179 bool qemu_cpu_is_self(CPUState
*cpu
)
181 return thread_cpu
== cpu
;
184 void qemu_cpu_kick(CPUState
*cpu
)
189 void task_settid(TaskState
*ts
)
191 if (ts
->ts_tid
== 0) {
192 ts
->ts_tid
= (pid_t
)syscall(SYS_gettid
);
196 void stop_all_tasks(void)
199 * We trust that when using NPTL, start_exclusive()
200 * handles thread stopping correctly.
205 /* Assumes contents are already zeroed. */
206 void init_task_state(TaskState
*ts
)
212 ts
->sigaltstack_used
= (struct target_sigaltstack
) {
215 .ss_flags
= TARGET_SS_DISABLE
,
218 /* Capture task start time relative to system boot */
220 ticks_per_sec
= sysconf(_SC_CLK_TCK
);
222 if ((ticks_per_sec
> 0) && !clock_gettime(CLOCK_BOOTTIME
, &bt
)) {
223 /* start_boottime is expressed in clock ticks */
224 ts
->start_boottime
= bt
.tv_sec
* (uint64_t) ticks_per_sec
;
225 ts
->start_boottime
+= bt
.tv_nsec
* (uint64_t) ticks_per_sec
/
226 NANOSECONDS_PER_SECOND
;
230 CPUArchState
*cpu_copy(CPUArchState
*env
)
232 CPUState
*cpu
= env_cpu(env
);
233 CPUState
*new_cpu
= cpu_create(cpu_type
);
234 CPUArchState
*new_env
= new_cpu
->env_ptr
;
237 /* Reset non arch specific state */
240 new_cpu
->tcg_cflags
= cpu
->tcg_cflags
;
241 memcpy(new_env
, env
, sizeof(CPUArchState
));
242 #if defined(TARGET_I386) || defined(TARGET_X86_64)
243 new_env
->gdt
.base
= target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES
,
244 PROT_READ
| PROT_WRITE
,
245 MAP_ANONYMOUS
| MAP_PRIVATE
, -1, 0);
246 memcpy(g2h_untagged(new_env
->gdt
.base
), g2h_untagged(env
->gdt
.base
),
247 sizeof(uint64_t) * TARGET_GDT_ENTRIES
);
248 OBJECT(new_cpu
)->free
= OBJECT(cpu
)->free
;
251 /* Clone all break/watchpoints.
252 Note: Once we support ptrace with hw-debug register access, make sure
253 BP_CPU break/watchpoints are handled correctly on clone. */
254 QTAILQ_INIT(&new_cpu
->breakpoints
);
255 QTAILQ_FOREACH(bp
, &cpu
->breakpoints
, entry
) {
256 cpu_breakpoint_insert(new_cpu
, bp
->pc
, bp
->flags
, NULL
);
262 static void handle_arg_help(const char *arg
)
267 static void handle_arg_log(const char *arg
)
269 last_log_mask
= qemu_str_to_log_mask(arg
);
270 if (!last_log_mask
) {
271 qemu_print_log_usage(stdout
);
276 static void handle_arg_dfilter(const char *arg
)
278 qemu_set_dfilter_ranges(arg
, &error_fatal
);
281 static void handle_arg_log_filename(const char *arg
)
283 last_log_filename
= arg
;
286 static void handle_arg_set_env(const char *arg
)
290 while ((token
= strsep(&p
, ",")) != NULL
) {
291 if (envlist_setenv(envlist
, token
) != 0) {
298 static void handle_arg_unset_env(const char *arg
)
302 while ((token
= strsep(&p
, ",")) != NULL
) {
303 if (envlist_unsetenv(envlist
, token
) != 0) {
310 static void handle_arg_argv0(const char *arg
)
315 static void handle_arg_stack_size(const char *arg
)
318 guest_stack_size
= strtoul(arg
, &p
, 0);
319 if (guest_stack_size
== 0) {
324 guest_stack_size
*= MiB
;
325 } else if (*p
== 'k' || *p
== 'K') {
326 guest_stack_size
*= KiB
;
330 static void handle_arg_ld_prefix(const char *arg
)
332 interp_prefix
= strdup(arg
);
335 static void handle_arg_pagesize(const char *arg
)
337 qemu_host_page_size
= atoi(arg
);
338 if (qemu_host_page_size
== 0 ||
339 (qemu_host_page_size
& (qemu_host_page_size
- 1)) != 0) {
340 fprintf(stderr
, "page size must be a power of two\n");
345 static void handle_arg_seed(const char *arg
)
350 static void handle_arg_gdb(const char *arg
)
352 gdbstub
= g_strdup(arg
);
355 static void handle_arg_uname(const char *arg
)
357 qemu_uname_release
= strdup(arg
);
360 static void handle_arg_cpu(const char *arg
)
362 cpu_model
= strdup(arg
);
363 if (cpu_model
== NULL
|| is_help_option(cpu_model
)) {
364 /* XXX: implement xxx_cpu_list for targets that still miss it */
365 #if defined(cpu_list)
372 static void handle_arg_guest_base(const char *arg
)
374 guest_base
= strtol(arg
, NULL
, 0);
375 have_guest_base
= true;
378 static void handle_arg_reserved_va(const char *arg
)
382 reserved_va
= strtoul(arg
, &p
, 0);
396 unsigned long unshifted
= reserved_va
;
398 reserved_va
<<= shift
;
399 if (reserved_va
>> shift
!= unshifted
) {
400 fprintf(stderr
, "Reserved virtual address too big\n");
405 fprintf(stderr
, "Unrecognised -R size suffix '%s'\n", p
);
410 static void handle_arg_singlestep(const char *arg
)
415 static void handle_arg_strace(const char *arg
)
417 enable_strace
= true;
420 static void handle_arg_version(const char *arg
)
422 printf("qemu-" TARGET_NAME
" version " QEMU_FULL_VERSION
423 "\n" QEMU_COPYRIGHT
"\n");
427 static void handle_arg_trace(const char *arg
)
429 trace_opt_parse(arg
);
432 #if defined(TARGET_XTENSA)
433 static void handle_arg_abi_call0(const char *arg
)
435 xtensa_set_abi_call0();
439 static void handle_arg_perfmap(const char *arg
)
441 perf_enable_perfmap();
444 static void handle_arg_jitdump(const char *arg
)
446 perf_enable_jitdump();
449 static QemuPluginList plugins
= QTAILQ_HEAD_INITIALIZER(plugins
);
452 static void handle_arg_plugin(const char *arg
)
454 qemu_plugin_opt_parse(arg
, &plugins
);
458 struct qemu_argument
{
462 void (*handle_opt
)(const char *arg
);
467 static const struct qemu_argument arg_table
[] = {
468 {"h", "", false, handle_arg_help
,
469 "", "print this help"},
470 {"help", "", false, handle_arg_help
,
472 {"g", "QEMU_GDB", true, handle_arg_gdb
,
473 "port", "wait gdb connection to 'port'"},
474 {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix
,
475 "path", "set the elf interpreter prefix to 'path'"},
476 {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size
,
477 "size", "set the stack size to 'size' bytes"},
478 {"cpu", "QEMU_CPU", true, handle_arg_cpu
,
479 "model", "select CPU (-cpu help for list)"},
480 {"E", "QEMU_SET_ENV", true, handle_arg_set_env
,
481 "var=value", "sets targets environment variable (see below)"},
482 {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env
,
483 "var", "unsets targets environment variable (see below)"},
484 {"0", "QEMU_ARGV0", true, handle_arg_argv0
,
485 "argv0", "forces target process argv[0] to be 'argv0'"},
486 {"r", "QEMU_UNAME", true, handle_arg_uname
,
487 "uname", "set qemu uname release string to 'uname'"},
488 {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base
,
489 "address", "set guest_base address to 'address'"},
490 {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va
,
491 "size", "reserve 'size' bytes for guest virtual address space"},
492 {"d", "QEMU_LOG", true, handle_arg_log
,
493 "item[,...]", "enable logging of specified items "
494 "(use '-d help' for a list of items)"},
495 {"dfilter", "QEMU_DFILTER", true, handle_arg_dfilter
,
496 "range[,...]","filter logging based on address range"},
497 {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename
,
498 "logfile", "write logs to 'logfile' (default stderr)"},
499 {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize
,
500 "pagesize", "set the host page size to 'pagesize'"},
501 {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep
,
502 "", "run in singlestep mode"},
503 {"strace", "QEMU_STRACE", false, handle_arg_strace
,
504 "", "log system calls"},
505 {"seed", "QEMU_RAND_SEED", true, handle_arg_seed
,
506 "", "Seed for pseudo-random number generator"},
507 {"trace", "QEMU_TRACE", true, handle_arg_trace
,
508 "", "[[enable=]<pattern>][,events=<file>][,file=<file>]"},
510 {"plugin", "QEMU_PLUGIN", true, handle_arg_plugin
,
511 "", "[file=]<file>[,<argname>=<argvalue>]"},
513 {"version", "QEMU_VERSION", false, handle_arg_version
,
514 "", "display version information and exit"},
515 #if defined(TARGET_XTENSA)
516 {"xtensa-abi-call0", "QEMU_XTENSA_ABI_CALL0", false, handle_arg_abi_call0
,
517 "", "assume CALL0 Xtensa ABI"},
519 {"perfmap", "QEMU_PERFMAP", false, handle_arg_perfmap
,
520 "", "Generate a /tmp/perf-${pid}.map file for perf"},
521 {"jitdump", "QEMU_JITDUMP", false, handle_arg_jitdump
,
522 "", "Generate a jit-${pid}.dump file for perf"},
523 {NULL
, NULL
, false, NULL
, NULL
, NULL
}
526 static void usage(int exitcode
)
528 const struct qemu_argument
*arginfo
;
532 printf("usage: qemu-" TARGET_NAME
" [options] program [arguments...]\n"
533 "Linux CPU emulator (compiled for " TARGET_NAME
" emulation)\n"
535 "Options and associated environment variables:\n"
538 /* Calculate column widths. We must always have at least enough space
539 * for the column header.
541 maxarglen
= strlen("Argument");
542 maxenvlen
= strlen("Env-variable");
544 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
545 int arglen
= strlen(arginfo
->argv
);
546 if (arginfo
->has_arg
) {
547 arglen
+= strlen(arginfo
->example
) + 1;
549 if (strlen(arginfo
->env
) > maxenvlen
) {
550 maxenvlen
= strlen(arginfo
->env
);
552 if (arglen
> maxarglen
) {
557 printf("%-*s %-*s Description\n", maxarglen
+1, "Argument",
558 maxenvlen
, "Env-variable");
560 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
561 if (arginfo
->has_arg
) {
562 printf("-%s %-*s %-*s %s\n", arginfo
->argv
,
563 (int)(maxarglen
- strlen(arginfo
->argv
) - 1),
564 arginfo
->example
, maxenvlen
, arginfo
->env
, arginfo
->help
);
566 printf("-%-*s %-*s %s\n", maxarglen
, arginfo
->argv
,
567 maxenvlen
, arginfo
->env
,
574 "QEMU_LD_PREFIX = %s\n"
575 "QEMU_STACK_SIZE = %ld byte\n",
580 "You can use -E and -U options or the QEMU_SET_ENV and\n"
581 "QEMU_UNSET_ENV environment variables to set and unset\n"
582 "environment variables for the target process.\n"
583 "It is possible to provide several variables by separating them\n"
584 "by commas in getsubopt(3) style. Additionally it is possible to\n"
585 "provide the -E and -U options multiple times.\n"
586 "The following lines are equivalent:\n"
587 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
588 " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
589 " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
590 "Note that if you provide several changes to a single variable\n"
591 "the last change will stay in effect.\n"
593 QEMU_HELP_BOTTOM
"\n");
598 static int parse_args(int argc
, char **argv
)
602 const struct qemu_argument
*arginfo
;
604 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
605 if (arginfo
->env
== NULL
) {
609 r
= getenv(arginfo
->env
);
611 arginfo
->handle_opt(r
);
617 if (optind
>= argc
) {
626 if (!strcmp(r
, "-")) {
629 /* Treat --foo the same as -foo. */
634 for (arginfo
= arg_table
; arginfo
->handle_opt
!= NULL
; arginfo
++) {
635 if (!strcmp(r
, arginfo
->argv
)) {
636 if (arginfo
->has_arg
) {
637 if (optind
>= argc
) {
638 (void) fprintf(stderr
,
639 "qemu: missing argument for option '%s'\n", r
);
642 arginfo
->handle_opt(argv
[optind
]);
645 arginfo
->handle_opt(NULL
);
651 /* no option matched the current argv */
652 if (arginfo
->handle_opt
== NULL
) {
653 (void) fprintf(stderr
, "qemu: unknown option '%s'\n", r
);
658 if (optind
>= argc
) {
659 (void) fprintf(stderr
, "qemu: no user program specified\n");
663 exec_path
= argv
[optind
];
668 int main(int argc
, char **argv
, char **envp
)
670 struct target_pt_regs regs1
, *regs
= ®s1
;
671 struct image_info info1
, *info
= &info1
;
672 struct linux_binprm bprm
;
677 char **target_environ
, **wrk
;
683 unsigned long max_reserved_va
;
687 module_call_init(MODULE_INIT_TRACE
);
688 qemu_init_cpu_list();
689 module_call_init(MODULE_INIT_QOM
);
691 envlist
= envlist_create();
693 /* add current environment into the list */
694 for (wrk
= environ
; *wrk
!= NULL
; wrk
++) {
695 (void) envlist_setenv(envlist
, *wrk
);
698 /* Read the stack limit from the kernel. If it's "unlimited",
699 then we can do little else besides use the default. */
702 if (getrlimit(RLIMIT_STACK
, &lim
) == 0
703 && lim
.rlim_cur
!= RLIM_INFINITY
704 && lim
.rlim_cur
== (target_long
)lim
.rlim_cur
705 && lim
.rlim_cur
> guest_stack_size
) {
706 guest_stack_size
= lim
.rlim_cur
;
712 qemu_add_opts(&qemu_trace_opts
);
713 qemu_plugin_add_opts();
715 optind
= parse_args(argc
, argv
);
717 qemu_set_log_filename_flags(last_log_filename
,
718 last_log_mask
| (enable_strace
* LOG_STRACE
),
721 if (!trace_init_backends()) {
725 qemu_plugin_load_list(&plugins
, &error_fatal
);
728 memset(regs
, 0, sizeof(struct target_pt_regs
));
730 /* Zero out image_info */
731 memset(info
, 0, sizeof(struct image_info
));
733 memset(&bprm
, 0, sizeof (bprm
));
735 /* Scan interp_prefix dir for replacement files. */
736 init_paths(interp_prefix
);
738 init_qemu_uname_release();
741 * Manage binfmt-misc open-binary flag
743 execfd
= qemu_getauxval(AT_EXECFD
);
745 execfd
= open(exec_path
, O_RDONLY
);
747 printf("Error while loading %s: %s\n", exec_path
, strerror(errno
));
752 /* Resolve executable file name to full path name */
753 if (realpath(exec_path
, real_exec_path
)) {
754 exec_path
= real_exec_path
;
758 * get binfmt_misc flags
760 preserve_argv0
= !!(qemu_getauxval(AT_FLAGS
) & AT_FLAGS_PRESERVE_ARGV0
);
763 * Manage binfmt-misc preserve-arg[0] flag
764 * argv[optind] full path to the binary
765 * argv[optind + 1] original argv[0]
767 if (optind
+ 1 < argc
&& preserve_argv0
) {
771 if (cpu_model
== NULL
) {
772 cpu_model
= cpu_get_model(get_elf_eflags(execfd
));
774 cpu_type
= parse_cpu_option(cpu_model
);
776 /* init tcg before creating CPUs and to get qemu_host_page_size */
778 AccelClass
*ac
= ACCEL_GET_CLASS(current_accel());
780 accel_init_interfaces(ac
);
781 ac
->init_machine(NULL
);
783 cpu
= cpu_create(cpu_type
);
789 * Reserving too much vm space via mmap can run into problems
790 * with rlimits, oom due to page table creation, etc. We will
791 * still try it, if directed by the command-line option, but
794 max_reserved_va
= MAX_RESERVED_VA(cpu
);
795 if (reserved_va
!= 0) {
796 if (max_reserved_va
&& reserved_va
> max_reserved_va
) {
797 fprintf(stderr
, "Reserved virtual address too big\n");
800 } else if (HOST_LONG_BITS
== 64 && TARGET_VIRT_ADDR_SPACE_BITS
<= 32) {
802 * reserved_va must be aligned with the host page size
803 * as it is used with mmap()
805 reserved_va
= max_reserved_va
& qemu_host_page_mask
;
810 if (seed_optarg
!= NULL
) {
811 qemu_guest_random_seed_main(seed_optarg
, &err
);
816 error_reportf_err(err
, "cannot initialize crypto: ");
821 target_environ
= envlist_to_environ(envlist
, NULL
);
822 envlist_free(envlist
);
825 * Read in mmap_min_addr kernel parameter. This value is used
826 * When loading the ELF image to determine whether guest_base
827 * is needed. It is also used in mmap_find_vma.
832 if ((fp
= fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL
) {
834 if (fscanf(fp
, "%lu", &tmp
) == 1 && tmp
!= 0) {
836 qemu_log_mask(CPU_LOG_PAGE
, "host mmap_min_addr=0x%lx\n",
844 * We prefer to not make NULL pointers accessible to QEMU.
845 * If we're in a chroot with no /proc, fall back to 1 page.
847 if (mmap_min_addr
== 0) {
848 mmap_min_addr
= qemu_host_page_size
;
849 qemu_log_mask(CPU_LOG_PAGE
,
850 "host mmap_min_addr=0x%lx (fallback)\n",
855 * Prepare copy of argv vector for target.
857 target_argc
= argc
- optind
;
858 target_argv
= calloc(target_argc
+ 1, sizeof (char *));
859 if (target_argv
== NULL
) {
860 (void) fprintf(stderr
, "Unable to allocate memory for target_argv\n");
865 * If argv0 is specified (using '-0' switch) we replace
866 * argv[0] pointer with the given one.
870 target_argv
[i
++] = strdup(argv0
);
872 for (; i
< target_argc
; i
++) {
873 target_argv
[i
] = strdup(argv
[optind
+ i
]);
875 target_argv
[target_argc
] = NULL
;
877 ts
= g_new0(TaskState
, 1);
879 /* build Task State */
887 ret
= loader_exec(execfd
, exec_path
, target_argv
, target_environ
, regs
,
890 printf("Error while loading %s: %s\n", exec_path
, strerror(-ret
));
894 for (wrk
= target_environ
; *wrk
; wrk
++) {
898 g_free(target_environ
);
900 if (qemu_loglevel_mask(CPU_LOG_PAGE
)) {
901 FILE *f
= qemu_log_trylock();
903 fprintf(f
, "guest_base %p\n", (void *)guest_base
);
904 fprintf(f
, "page layout changed following binary load\n");
907 fprintf(f
, "start_brk 0x" TARGET_ABI_FMT_lx
"\n",
909 fprintf(f
, "end_code 0x" TARGET_ABI_FMT_lx
"\n",
911 fprintf(f
, "start_code 0x" TARGET_ABI_FMT_lx
"\n",
913 fprintf(f
, "start_data 0x" TARGET_ABI_FMT_lx
"\n",
915 fprintf(f
, "end_data 0x" TARGET_ABI_FMT_lx
"\n",
917 fprintf(f
, "start_stack 0x" TARGET_ABI_FMT_lx
"\n",
919 fprintf(f
, "brk 0x" TARGET_ABI_FMT_lx
"\n",
921 fprintf(f
, "entry 0x" TARGET_ABI_FMT_lx
"\n",
923 fprintf(f
, "argv_start 0x" TARGET_ABI_FMT_lx
"\n",
925 fprintf(f
, "env_start 0x" TARGET_ABI_FMT_lx
"\n",
927 fprintf(f
, "auxv_start 0x" TARGET_ABI_FMT_lx
"\n",
933 target_set_brk(info
->brk
);
937 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
938 generating the prologue until now so that the prologue can take
939 the real value of GUEST_BASE into account. */
940 tcg_prologue_init(tcg_ctx
);
942 target_cpu_copy_regs(env
, regs
);
945 if (gdbserver_start(gdbstub
) < 0) {
946 fprintf(stderr
, "qemu: could not open gdbserver on %s\n",
950 gdb_handlesig(cpu
, 0);
953 #ifdef CONFIG_SEMIHOSTING
954 qemu_semihosting_guestfd_init();