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Commit | Line | Data |
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31e31b8a | 1 | /* |
93ac68bc | 2 | * qemu user main |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
31e31b8a FB |
5 | * |
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. | |
10 | * | |
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. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
8167ee88 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
31e31b8a | 18 | */ |
d39594e9 | 19 | #include "qemu/osdep.h" |
b52713c1 | 20 | #include "qemu/units.h" |
67a1de0d | 21 | #include "qemu-version.h" |
edf8e2af | 22 | #include <sys/syscall.h> |
703e0e89 | 23 | #include <sys/resource.h> |
31e31b8a | 24 | |
daa76aa4 | 25 | #include "qapi/error.h" |
3ef693a0 | 26 | #include "qemu.h" |
f348b6d1 | 27 | #include "qemu/path.h" |
6533dd6e | 28 | #include "qemu/config-file.h" |
f348b6d1 | 29 | #include "qemu/cutils.h" |
f5852efa | 30 | #include "qemu/error-report.h" |
f348b6d1 | 31 | #include "qemu/help_option.h" |
2b41f10e | 32 | #include "cpu.h" |
63c91552 | 33 | #include "exec/exec-all.h" |
9002ec79 | 34 | #include "tcg.h" |
1de7afc9 PB |
35 | #include "qemu/timer.h" |
36 | #include "qemu/envlist.h" | |
5ebdd774 | 37 | #include "qemu/guest-random.h" |
d8fd2954 | 38 | #include "elf.h" |
6533dd6e | 39 | #include "trace/control.h" |
542ca434 | 40 | #include "target_elf.h" |
cd71c089 | 41 | #include "cpu_loop-common.h" |
04a6dfeb | 42 | |
d088d664 AJ |
43 | char *exec_path; |
44 | ||
1b530a6d | 45 | int singlestep; |
8cb76755 SW |
46 | static const char *filename; |
47 | static const char *argv0; | |
48 | static int gdbstub_port; | |
49 | static envlist_t *envlist; | |
51fb256a | 50 | static const char *cpu_model; |
2278b939 | 51 | static const char *cpu_type; |
5ebdd774 | 52 | static const char *seed_optarg; |
379f6698 PB |
53 | unsigned long mmap_min_addr; |
54 | unsigned long guest_base; | |
55 | int have_guest_base; | |
120a9848 | 56 | |
288e65b9 AG |
57 | /* |
58 | * When running 32-on-64 we should make sure we can fit all of the possible | |
59 | * guest address space into a contiguous chunk of virtual host memory. | |
60 | * | |
61 | * This way we will never overlap with our own libraries or binaries or stack | |
62 | * or anything else that QEMU maps. | |
18e80c55 RH |
63 | * |
64 | * Many cpus reserve the high bit (or more than one for some 64-bit cpus) | |
65 | * of the address for the kernel. Some cpus rely on this and user space | |
66 | * uses the high bit(s) for pointer tagging and the like. For them, we | |
67 | * must preserve the expected address space. | |
288e65b9 | 68 | */ |
18e80c55 RH |
69 | #ifndef MAX_RESERVED_VA |
70 | # if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS | |
71 | # if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \ | |
72 | (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32)) | |
73 | /* There are a number of places where we assign reserved_va to a variable | |
74 | of type abi_ulong and expect it to fit. Avoid the last page. */ | |
75 | # define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK) | |
76 | # else | |
77 | # define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS) | |
78 | # endif | |
314992b1 | 79 | # else |
18e80c55 | 80 | # define MAX_RESERVED_VA 0 |
314992b1 | 81 | # endif |
18e80c55 RH |
82 | #endif |
83 | ||
68a1c816 | 84 | unsigned long reserved_va; |
1b530a6d | 85 | |
d03f9c32 | 86 | static void usage(int exitcode); |
fc9c5412 | 87 | |
7ee2822c | 88 | static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
e586822a | 89 | const char *qemu_uname_release; |
586314f2 | 90 | |
9de5e440 FB |
91 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so |
92 | we allocate a bigger stack. Need a better solution, for example | |
93 | by remapping the process stack directly at the right place */ | |
703e0e89 | 94 | unsigned long guest_stack_size = 8 * 1024 * 1024UL; |
31e31b8a FB |
95 | |
96 | void gemu_log(const char *fmt, ...) | |
97 | { | |
98 | va_list ap; | |
99 | ||
100 | va_start(ap, fmt); | |
101 | vfprintf(stderr, fmt, ap); | |
102 | va_end(ap); | |
103 | } | |
104 | ||
8fcd3692 | 105 | #if defined(TARGET_I386) |
05390248 | 106 | int cpu_get_pic_interrupt(CPUX86State *env) |
92ccca6a FB |
107 | { |
108 | return -1; | |
109 | } | |
8fcd3692 | 110 | #endif |
92ccca6a | 111 | |
d5975363 PB |
112 | /***********************************************************/ |
113 | /* Helper routines for implementing atomic operations. */ | |
114 | ||
d5975363 PB |
115 | /* Make sure everything is in a consistent state for calling fork(). */ |
116 | void fork_start(void) | |
117 | { | |
06065c45 | 118 | start_exclusive(); |
d032d1b4 | 119 | mmap_fork_start(); |
024949ca | 120 | cpu_list_lock(); |
d5975363 PB |
121 | } |
122 | ||
123 | void fork_end(int child) | |
124 | { | |
d032d1b4 | 125 | mmap_fork_end(child); |
d5975363 | 126 | if (child) { |
bdc44640 | 127 | CPUState *cpu, *next_cpu; |
d5975363 PB |
128 | /* Child processes created by fork() only have a single thread. |
129 | Discard information about the parent threads. */ | |
bdc44640 AF |
130 | CPU_FOREACH_SAFE(cpu, next_cpu) { |
131 | if (cpu != thread_cpu) { | |
068a5ea0 | 132 | QTAILQ_REMOVE_RCU(&cpus, cpu, node); |
bdc44640 AF |
133 | } |
134 | } | |
267f685b | 135 | qemu_init_cpu_list(); |
f7ec7f7b | 136 | gdbserver_fork(thread_cpu); |
06065c45 PM |
137 | /* qemu_init_cpu_list() takes care of reinitializing the |
138 | * exclusive state, so we don't need to end_exclusive() here. | |
139 | */ | |
d5975363 | 140 | } else { |
267f685b | 141 | cpu_list_unlock(); |
06065c45 | 142 | end_exclusive(); |
d5975363 | 143 | } |
d5975363 PB |
144 | } |
145 | ||
b44316fb | 146 | __thread CPUState *thread_cpu; |
59faf6d6 | 147 | |
178f9429 SF |
148 | bool qemu_cpu_is_self(CPUState *cpu) |
149 | { | |
150 | return thread_cpu == cpu; | |
151 | } | |
152 | ||
153 | void qemu_cpu_kick(CPUState *cpu) | |
154 | { | |
155 | cpu_exit(cpu); | |
156 | } | |
157 | ||
edf8e2af MW |
158 | void task_settid(TaskState *ts) |
159 | { | |
160 | if (ts->ts_tid == 0) { | |
edf8e2af | 161 | ts->ts_tid = (pid_t)syscall(SYS_gettid); |
edf8e2af MW |
162 | } |
163 | } | |
164 | ||
165 | void stop_all_tasks(void) | |
166 | { | |
167 | /* | |
168 | * We trust that when using NPTL, start_exclusive() | |
169 | * handles thread stopping correctly. | |
170 | */ | |
171 | start_exclusive(); | |
172 | } | |
173 | ||
c3a92833 | 174 | /* Assumes contents are already zeroed. */ |
624f7979 PB |
175 | void init_task_state(TaskState *ts) |
176 | { | |
624f7979 | 177 | ts->used = 1; |
624f7979 | 178 | } |
fc9c5412 | 179 | |
30ba0ee5 AF |
180 | CPUArchState *cpu_copy(CPUArchState *env) |
181 | { | |
ff4700b0 | 182 | CPUState *cpu = ENV_GET_CPU(env); |
2278b939 | 183 | CPUState *new_cpu = cpu_create(cpu_type); |
61c7480f | 184 | CPUArchState *new_env = new_cpu->env_ptr; |
30ba0ee5 AF |
185 | CPUBreakpoint *bp; |
186 | CPUWatchpoint *wp; | |
30ba0ee5 AF |
187 | |
188 | /* Reset non arch specific state */ | |
75a34036 | 189 | cpu_reset(new_cpu); |
30ba0ee5 AF |
190 | |
191 | memcpy(new_env, env, sizeof(CPUArchState)); | |
192 | ||
193 | /* Clone all break/watchpoints. | |
194 | Note: Once we support ptrace with hw-debug register access, make sure | |
195 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
1d085f6c TB |
196 | QTAILQ_INIT(&new_cpu->breakpoints); |
197 | QTAILQ_INIT(&new_cpu->watchpoints); | |
f0c3c505 | 198 | QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { |
b3310ab3 | 199 | cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL); |
30ba0ee5 | 200 | } |
ff4700b0 | 201 | QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { |
05068c0d | 202 | cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL); |
30ba0ee5 | 203 | } |
30ba0ee5 AF |
204 | |
205 | return new_env; | |
206 | } | |
207 | ||
fc9c5412 JS |
208 | static void handle_arg_help(const char *arg) |
209 | { | |
4d1275c2 | 210 | usage(EXIT_SUCCESS); |
fc9c5412 JS |
211 | } |
212 | ||
213 | static void handle_arg_log(const char *arg) | |
214 | { | |
215 | int mask; | |
fc9c5412 | 216 | |
4fde1eba | 217 | mask = qemu_str_to_log_mask(arg); |
fc9c5412 | 218 | if (!mask) { |
59a6fa6e | 219 | qemu_print_log_usage(stdout); |
4d1275c2 | 220 | exit(EXIT_FAILURE); |
fc9c5412 | 221 | } |
f2937a33 | 222 | qemu_log_needs_buffers(); |
24537a01 | 223 | qemu_set_log(mask); |
fc9c5412 JS |
224 | } |
225 | ||
8423fa90 AB |
226 | static void handle_arg_dfilter(const char *arg) |
227 | { | |
228 | qemu_set_dfilter_ranges(arg, NULL); | |
229 | } | |
230 | ||
50171d42 CWR |
231 | static void handle_arg_log_filename(const char *arg) |
232 | { | |
daa76aa4 | 233 | qemu_set_log_filename(arg, &error_fatal); |
50171d42 CWR |
234 | } |
235 | ||
fc9c5412 JS |
236 | static void handle_arg_set_env(const char *arg) |
237 | { | |
238 | char *r, *p, *token; | |
239 | r = p = strdup(arg); | |
240 | while ((token = strsep(&p, ",")) != NULL) { | |
241 | if (envlist_setenv(envlist, token) != 0) { | |
4d1275c2 | 242 | usage(EXIT_FAILURE); |
fc9c5412 JS |
243 | } |
244 | } | |
245 | free(r); | |
246 | } | |
247 | ||
248 | static void handle_arg_unset_env(const char *arg) | |
249 | { | |
250 | char *r, *p, *token; | |
251 | r = p = strdup(arg); | |
252 | while ((token = strsep(&p, ",")) != NULL) { | |
253 | if (envlist_unsetenv(envlist, token) != 0) { | |
4d1275c2 | 254 | usage(EXIT_FAILURE); |
fc9c5412 JS |
255 | } |
256 | } | |
257 | free(r); | |
258 | } | |
259 | ||
260 | static void handle_arg_argv0(const char *arg) | |
261 | { | |
262 | argv0 = strdup(arg); | |
263 | } | |
264 | ||
265 | static void handle_arg_stack_size(const char *arg) | |
266 | { | |
267 | char *p; | |
268 | guest_stack_size = strtoul(arg, &p, 0); | |
269 | if (guest_stack_size == 0) { | |
4d1275c2 | 270 | usage(EXIT_FAILURE); |
fc9c5412 JS |
271 | } |
272 | ||
273 | if (*p == 'M') { | |
b52713c1 | 274 | guest_stack_size *= MiB; |
fc9c5412 | 275 | } else if (*p == 'k' || *p == 'K') { |
b52713c1 | 276 | guest_stack_size *= KiB; |
fc9c5412 JS |
277 | } |
278 | } | |
279 | ||
280 | static void handle_arg_ld_prefix(const char *arg) | |
281 | { | |
282 | interp_prefix = strdup(arg); | |
283 | } | |
284 | ||
285 | static void handle_arg_pagesize(const char *arg) | |
286 | { | |
287 | qemu_host_page_size = atoi(arg); | |
288 | if (qemu_host_page_size == 0 || | |
289 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
290 | fprintf(stderr, "page size must be a power of two\n"); | |
4d1275c2 | 291 | exit(EXIT_FAILURE); |
fc9c5412 JS |
292 | } |
293 | } | |
294 | ||
5ebdd774 | 295 | static void handle_arg_seed(const char *arg) |
c5e4a5a9 | 296 | { |
5ebdd774 | 297 | seed_optarg = arg; |
c5e4a5a9 MR |
298 | } |
299 | ||
fc9c5412 JS |
300 | static void handle_arg_gdb(const char *arg) |
301 | { | |
302 | gdbstub_port = atoi(arg); | |
303 | } | |
304 | ||
305 | static void handle_arg_uname(const char *arg) | |
306 | { | |
307 | qemu_uname_release = strdup(arg); | |
308 | } | |
309 | ||
310 | static void handle_arg_cpu(const char *arg) | |
311 | { | |
312 | cpu_model = strdup(arg); | |
c8057f95 | 313 | if (cpu_model == NULL || is_help_option(cpu_model)) { |
fc9c5412 | 314 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
e916cbf8 | 315 | #if defined(cpu_list) |
0442428a | 316 | cpu_list(); |
fc9c5412 | 317 | #endif |
4d1275c2 | 318 | exit(EXIT_FAILURE); |
fc9c5412 JS |
319 | } |
320 | } | |
321 | ||
fc9c5412 JS |
322 | static void handle_arg_guest_base(const char *arg) |
323 | { | |
324 | guest_base = strtol(arg, NULL, 0); | |
325 | have_guest_base = 1; | |
326 | } | |
327 | ||
328 | static void handle_arg_reserved_va(const char *arg) | |
329 | { | |
330 | char *p; | |
331 | int shift = 0; | |
332 | reserved_va = strtoul(arg, &p, 0); | |
333 | switch (*p) { | |
334 | case 'k': | |
335 | case 'K': | |
336 | shift = 10; | |
337 | break; | |
338 | case 'M': | |
339 | shift = 20; | |
340 | break; | |
341 | case 'G': | |
342 | shift = 30; | |
343 | break; | |
344 | } | |
345 | if (shift) { | |
346 | unsigned long unshifted = reserved_va; | |
347 | p++; | |
348 | reserved_va <<= shift; | |
18e80c55 RH |
349 | if (reserved_va >> shift != unshifted |
350 | || (MAX_RESERVED_VA && reserved_va > MAX_RESERVED_VA)) { | |
fc9c5412 | 351 | fprintf(stderr, "Reserved virtual address too big\n"); |
4d1275c2 | 352 | exit(EXIT_FAILURE); |
fc9c5412 JS |
353 | } |
354 | } | |
355 | if (*p) { | |
356 | fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p); | |
4d1275c2 | 357 | exit(EXIT_FAILURE); |
fc9c5412 JS |
358 | } |
359 | } | |
fc9c5412 JS |
360 | |
361 | static void handle_arg_singlestep(const char *arg) | |
362 | { | |
363 | singlestep = 1; | |
364 | } | |
365 | ||
366 | static void handle_arg_strace(const char *arg) | |
367 | { | |
368 | do_strace = 1; | |
369 | } | |
370 | ||
371 | static void handle_arg_version(const char *arg) | |
372 | { | |
7e563bfb | 373 | printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
0781dd6e | 374 | "\n" QEMU_COPYRIGHT "\n"); |
4d1275c2 | 375 | exit(EXIT_SUCCESS); |
fc9c5412 JS |
376 | } |
377 | ||
6533dd6e LV |
378 | static char *trace_file; |
379 | static void handle_arg_trace(const char *arg) | |
380 | { | |
381 | g_free(trace_file); | |
382 | trace_file = trace_opt_parse(arg); | |
383 | } | |
384 | ||
fc9c5412 JS |
385 | struct qemu_argument { |
386 | const char *argv; | |
387 | const char *env; | |
388 | bool has_arg; | |
389 | void (*handle_opt)(const char *arg); | |
390 | const char *example; | |
391 | const char *help; | |
392 | }; | |
393 | ||
42644cee | 394 | static const struct qemu_argument arg_table[] = { |
fc9c5412 JS |
395 | {"h", "", false, handle_arg_help, |
396 | "", "print this help"}, | |
daaf8c8e MI |
397 | {"help", "", false, handle_arg_help, |
398 | "", ""}, | |
fc9c5412 JS |
399 | {"g", "QEMU_GDB", true, handle_arg_gdb, |
400 | "port", "wait gdb connection to 'port'"}, | |
401 | {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix, | |
402 | "path", "set the elf interpreter prefix to 'path'"}, | |
403 | {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size, | |
404 | "size", "set the stack size to 'size' bytes"}, | |
405 | {"cpu", "QEMU_CPU", true, handle_arg_cpu, | |
c8057f95 | 406 | "model", "select CPU (-cpu help for list)"}, |
fc9c5412 JS |
407 | {"E", "QEMU_SET_ENV", true, handle_arg_set_env, |
408 | "var=value", "sets targets environment variable (see below)"}, | |
409 | {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env, | |
410 | "var", "unsets targets environment variable (see below)"}, | |
411 | {"0", "QEMU_ARGV0", true, handle_arg_argv0, | |
412 | "argv0", "forces target process argv[0] to be 'argv0'"}, | |
413 | {"r", "QEMU_UNAME", true, handle_arg_uname, | |
414 | "uname", "set qemu uname release string to 'uname'"}, | |
fc9c5412 JS |
415 | {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base, |
416 | "address", "set guest_base address to 'address'"}, | |
417 | {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va, | |
418 | "size", "reserve 'size' bytes for guest virtual address space"}, | |
fc9c5412 | 419 | {"d", "QEMU_LOG", true, handle_arg_log, |
989b697d PM |
420 | "item[,...]", "enable logging of specified items " |
421 | "(use '-d help' for a list of items)"}, | |
8423fa90 AB |
422 | {"dfilter", "QEMU_DFILTER", true, handle_arg_dfilter, |
423 | "range[,...]","filter logging based on address range"}, | |
50171d42 | 424 | {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename, |
989b697d | 425 | "logfile", "write logs to 'logfile' (default stderr)"}, |
fc9c5412 JS |
426 | {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize, |
427 | "pagesize", "set the host page size to 'pagesize'"}, | |
428 | {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep, | |
429 | "", "run in singlestep mode"}, | |
430 | {"strace", "QEMU_STRACE", false, handle_arg_strace, | |
431 | "", "log system calls"}, | |
5ebdd774 | 432 | {"seed", "QEMU_RAND_SEED", true, handle_arg_seed, |
c5e4a5a9 | 433 | "", "Seed for pseudo-random number generator"}, |
6533dd6e LV |
434 | {"trace", "QEMU_TRACE", true, handle_arg_trace, |
435 | "", "[[enable=]<pattern>][,events=<file>][,file=<file>]"}, | |
fc9c5412 | 436 | {"version", "QEMU_VERSION", false, handle_arg_version, |
1386d4c0 | 437 | "", "display version information and exit"}, |
fc9c5412 JS |
438 | {NULL, NULL, false, NULL, NULL, NULL} |
439 | }; | |
440 | ||
d03f9c32 | 441 | static void usage(int exitcode) |
fc9c5412 | 442 | { |
42644cee | 443 | const struct qemu_argument *arginfo; |
fc9c5412 JS |
444 | int maxarglen; |
445 | int maxenvlen; | |
446 | ||
2e59915d PB |
447 | printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
448 | "Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n" | |
fc9c5412 JS |
449 | "\n" |
450 | "Options and associated environment variables:\n" | |
451 | "\n"); | |
452 | ||
63ec54d7 PM |
453 | /* Calculate column widths. We must always have at least enough space |
454 | * for the column header. | |
455 | */ | |
456 | maxarglen = strlen("Argument"); | |
457 | maxenvlen = strlen("Env-variable"); | |
fc9c5412 JS |
458 | |
459 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
63ec54d7 PM |
460 | int arglen = strlen(arginfo->argv); |
461 | if (arginfo->has_arg) { | |
462 | arglen += strlen(arginfo->example) + 1; | |
463 | } | |
fc9c5412 JS |
464 | if (strlen(arginfo->env) > maxenvlen) { |
465 | maxenvlen = strlen(arginfo->env); | |
466 | } | |
63ec54d7 PM |
467 | if (arglen > maxarglen) { |
468 | maxarglen = arglen; | |
fc9c5412 JS |
469 | } |
470 | } | |
471 | ||
63ec54d7 PM |
472 | printf("%-*s %-*s Description\n", maxarglen+1, "Argument", |
473 | maxenvlen, "Env-variable"); | |
fc9c5412 JS |
474 | |
475 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
476 | if (arginfo->has_arg) { | |
477 | printf("-%s %-*s %-*s %s\n", arginfo->argv, | |
63ec54d7 PM |
478 | (int)(maxarglen - strlen(arginfo->argv) - 1), |
479 | arginfo->example, maxenvlen, arginfo->env, arginfo->help); | |
fc9c5412 | 480 | } else { |
63ec54d7 | 481 | printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv, |
fc9c5412 JS |
482 | maxenvlen, arginfo->env, |
483 | arginfo->help); | |
484 | } | |
485 | } | |
486 | ||
487 | printf("\n" | |
488 | "Defaults:\n" | |
489 | "QEMU_LD_PREFIX = %s\n" | |
989b697d | 490 | "QEMU_STACK_SIZE = %ld byte\n", |
fc9c5412 | 491 | interp_prefix, |
989b697d | 492 | guest_stack_size); |
fc9c5412 JS |
493 | |
494 | printf("\n" | |
495 | "You can use -E and -U options or the QEMU_SET_ENV and\n" | |
496 | "QEMU_UNSET_ENV environment variables to set and unset\n" | |
497 | "environment variables for the target process.\n" | |
498 | "It is possible to provide several variables by separating them\n" | |
499 | "by commas in getsubopt(3) style. Additionally it is possible to\n" | |
500 | "provide the -E and -U options multiple times.\n" | |
501 | "The following lines are equivalent:\n" | |
502 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
503 | " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n" | |
504 | " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n" | |
505 | "Note that if you provide several changes to a single variable\n" | |
f5048cb7 EB |
506 | "the last change will stay in effect.\n" |
507 | "\n" | |
508 | QEMU_HELP_BOTTOM "\n"); | |
fc9c5412 | 509 | |
d03f9c32 | 510 | exit(exitcode); |
fc9c5412 JS |
511 | } |
512 | ||
513 | static int parse_args(int argc, char **argv) | |
514 | { | |
515 | const char *r; | |
516 | int optind; | |
42644cee | 517 | const struct qemu_argument *arginfo; |
fc9c5412 JS |
518 | |
519 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
520 | if (arginfo->env == NULL) { | |
521 | continue; | |
522 | } | |
523 | ||
524 | r = getenv(arginfo->env); | |
525 | if (r != NULL) { | |
526 | arginfo->handle_opt(r); | |
527 | } | |
528 | } | |
529 | ||
530 | optind = 1; | |
531 | for (;;) { | |
532 | if (optind >= argc) { | |
533 | break; | |
534 | } | |
535 | r = argv[optind]; | |
536 | if (r[0] != '-') { | |
537 | break; | |
538 | } | |
539 | optind++; | |
540 | r++; | |
541 | if (!strcmp(r, "-")) { | |
542 | break; | |
543 | } | |
ba02577c MI |
544 | /* Treat --foo the same as -foo. */ |
545 | if (r[0] == '-') { | |
546 | r++; | |
547 | } | |
fc9c5412 JS |
548 | |
549 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
550 | if (!strcmp(r, arginfo->argv)) { | |
fc9c5412 | 551 | if (arginfo->has_arg) { |
1386d4c0 | 552 | if (optind >= argc) { |
138940bf MI |
553 | (void) fprintf(stderr, |
554 | "qemu: missing argument for option '%s'\n", r); | |
4d1275c2 | 555 | exit(EXIT_FAILURE); |
1386d4c0 PM |
556 | } |
557 | arginfo->handle_opt(argv[optind]); | |
fc9c5412 | 558 | optind++; |
1386d4c0 PM |
559 | } else { |
560 | arginfo->handle_opt(NULL); | |
fc9c5412 | 561 | } |
fc9c5412 JS |
562 | break; |
563 | } | |
564 | } | |
565 | ||
566 | /* no option matched the current argv */ | |
567 | if (arginfo->handle_opt == NULL) { | |
138940bf | 568 | (void) fprintf(stderr, "qemu: unknown option '%s'\n", r); |
4d1275c2 | 569 | exit(EXIT_FAILURE); |
fc9c5412 JS |
570 | } |
571 | } | |
572 | ||
573 | if (optind >= argc) { | |
138940bf | 574 | (void) fprintf(stderr, "qemu: no user program specified\n"); |
4d1275c2 | 575 | exit(EXIT_FAILURE); |
fc9c5412 JS |
576 | } |
577 | ||
578 | filename = argv[optind]; | |
579 | exec_path = argv[optind]; | |
580 | ||
581 | return optind; | |
582 | } | |
583 | ||
902b3d5c | 584 | int main(int argc, char **argv, char **envp) |
31e31b8a | 585 | { |
01ffc75b | 586 | struct target_pt_regs regs1, *regs = ®s1; |
31e31b8a | 587 | struct image_info info1, *info = &info1; |
edf8e2af | 588 | struct linux_binprm bprm; |
48e15fc2 | 589 | TaskState *ts; |
9349b4f9 | 590 | CPUArchState *env; |
db6b81d4 | 591 | CPUState *cpu; |
586314f2 | 592 | int optind; |
04a6dfeb | 593 | char **target_environ, **wrk; |
7d8cec95 AJ |
594 | char **target_argv; |
595 | int target_argc; | |
7d8cec95 | 596 | int i; |
fd4d81dd | 597 | int ret; |
03cfd8fa | 598 | int execfd; |
b12b6a18 | 599 | |
f5852efa | 600 | error_init(argv[0]); |
fe4db84d | 601 | module_call_init(MODULE_INIT_TRACE); |
267f685b | 602 | qemu_init_cpu_list(); |
ce008c1f AF |
603 | module_call_init(MODULE_INIT_QOM); |
604 | ||
ec45bbe5 | 605 | envlist = envlist_create(); |
04a6dfeb AJ |
606 | |
607 | /* add current environment into the list */ | |
608 | for (wrk = environ; *wrk != NULL; wrk++) { | |
609 | (void) envlist_setenv(envlist, *wrk); | |
610 | } | |
611 | ||
703e0e89 RH |
612 | /* Read the stack limit from the kernel. If it's "unlimited", |
613 | then we can do little else besides use the default. */ | |
614 | { | |
615 | struct rlimit lim; | |
616 | if (getrlimit(RLIMIT_STACK, &lim) == 0 | |
81bbe906 TY |
617 | && lim.rlim_cur != RLIM_INFINITY |
618 | && lim.rlim_cur == (target_long)lim.rlim_cur) { | |
703e0e89 RH |
619 | guest_stack_size = lim.rlim_cur; |
620 | } | |
621 | } | |
622 | ||
b1f9be31 | 623 | cpu_model = NULL; |
b5ec5ce0 | 624 | |
c5e4a5a9 MR |
625 | srand(time(NULL)); |
626 | ||
6533dd6e LV |
627 | qemu_add_opts(&qemu_trace_opts); |
628 | ||
fc9c5412 | 629 | optind = parse_args(argc, argv); |
586314f2 | 630 | |
6533dd6e LV |
631 | if (!trace_init_backends()) { |
632 | exit(1); | |
633 | } | |
634 | trace_init_file(trace_file); | |
635 | ||
31e31b8a | 636 | /* Zero out regs */ |
01ffc75b | 637 | memset(regs, 0, sizeof(struct target_pt_regs)); |
31e31b8a FB |
638 | |
639 | /* Zero out image_info */ | |
640 | memset(info, 0, sizeof(struct image_info)); | |
641 | ||
edf8e2af MW |
642 | memset(&bprm, 0, sizeof (bprm)); |
643 | ||
74cd30b8 FB |
644 | /* Scan interp_prefix dir for replacement files. */ |
645 | init_paths(interp_prefix); | |
646 | ||
4a24a758 PM |
647 | init_qemu_uname_release(); |
648 | ||
768fe76e YS |
649 | execfd = qemu_getauxval(AT_EXECFD); |
650 | if (execfd == 0) { | |
651 | execfd = open(filename, O_RDONLY); | |
652 | if (execfd < 0) { | |
653 | printf("Error while loading %s: %s\n", filename, strerror(errno)); | |
654 | _exit(EXIT_FAILURE); | |
655 | } | |
656 | } | |
657 | ||
46027c07 | 658 | if (cpu_model == NULL) { |
768fe76e | 659 | cpu_model = cpu_get_model(get_elf_eflags(execfd)); |
aaed909a | 660 | } |
c1c8cfe5 | 661 | cpu_type = parse_cpu_option(cpu_model); |
2278b939 | 662 | |
2b5249b8 | 663 | /* init tcg before creating CPUs and to get qemu_host_page_size */ |
d5ab9713 | 664 | tcg_exec_init(0); |
2278b939 | 665 | |
dc18baae LV |
666 | /* Reserving *too* much vm space via mmap can run into problems |
667 | with rlimits, oom due to page table creation, etc. We will still try it, | |
668 | if directed by the command-line option, but not by default. */ | |
669 | if (HOST_LONG_BITS == 64 && | |
670 | TARGET_VIRT_ADDR_SPACE_BITS <= 32 && | |
671 | reserved_va == 0) { | |
672 | /* reserved_va must be aligned with the host page size | |
673 | * as it is used with mmap() | |
674 | */ | |
675 | reserved_va = MAX_RESERVED_VA & qemu_host_page_mask; | |
676 | } | |
677 | ||
2278b939 | 678 | cpu = cpu_create(cpu_type); |
2994fd96 | 679 | env = cpu->env_ptr; |
0ac46af3 | 680 | cpu_reset(cpu); |
b55a37c9 | 681 | |
db6b81d4 | 682 | thread_cpu = cpu; |
3b46e624 | 683 | |
b6741956 FB |
684 | if (getenv("QEMU_STRACE")) { |
685 | do_strace = 1; | |
b92c47c1 TS |
686 | } |
687 | ||
5ebdd774 RH |
688 | if (seed_optarg == NULL) { |
689 | seed_optarg = getenv("QEMU_RAND_SEED"); | |
690 | } | |
691 | if (seed_optarg != NULL) { | |
692 | unsigned long long seed; | |
693 | ||
694 | /* This will go away with the last user of rand(). */ | |
695 | if (parse_uint_full(seed_optarg, &seed, 0) != 0) { | |
696 | fprintf(stderr, "Invalid seed number: %s\n", seed_optarg); | |
697 | exit(EXIT_FAILURE); | |
698 | } | |
699 | srand(seed); | |
700 | ||
701 | qemu_guest_random_seed_main(seed_optarg, &error_fatal); | |
c5e4a5a9 MR |
702 | } |
703 | ||
04a6dfeb AJ |
704 | target_environ = envlist_to_environ(envlist, NULL); |
705 | envlist_free(envlist); | |
b12b6a18 | 706 | |
379f6698 | 707 | /* |
2b5249b8 | 708 | * Now that page sizes are configured in tcg_exec_init() we can do |
379f6698 PB |
709 | * proper page alignment for guest_base. |
710 | */ | |
711 | guest_base = HOST_PAGE_ALIGN(guest_base); | |
68a1c816 | 712 | |
806d1021 MI |
713 | if (reserved_va || have_guest_base) { |
714 | guest_base = init_guest_space(guest_base, reserved_va, 0, | |
715 | have_guest_base); | |
716 | if (guest_base == (unsigned long)-1) { | |
097b8cb8 PM |
717 | fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address " |
718 | "space for use as guest address space (check your virtual " | |
719 | "memory ulimit setting or reserve less using -R option)\n", | |
720 | reserved_va); | |
4d1275c2 | 721 | exit(EXIT_FAILURE); |
68a1c816 | 722 | } |
97cc7560 | 723 | |
806d1021 MI |
724 | if (reserved_va) { |
725 | mmap_next_start = reserved_va; | |
97cc7560 DDAG |
726 | } |
727 | } | |
379f6698 PB |
728 | |
729 | /* | |
730 | * Read in mmap_min_addr kernel parameter. This value is used | |
731 | * When loading the ELF image to determine whether guest_base | |
14f24e14 | 732 | * is needed. It is also used in mmap_find_vma. |
379f6698 | 733 | */ |
14f24e14 | 734 | { |
379f6698 PB |
735 | FILE *fp; |
736 | ||
737 | if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { | |
738 | unsigned long tmp; | |
739 | if (fscanf(fp, "%lu", &tmp) == 1) { | |
740 | mmap_min_addr = tmp; | |
13829020 | 741 | qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr); |
379f6698 PB |
742 | } |
743 | fclose(fp); | |
744 | } | |
745 | } | |
379f6698 | 746 | |
7d8cec95 AJ |
747 | /* |
748 | * Prepare copy of argv vector for target. | |
749 | */ | |
750 | target_argc = argc - optind; | |
751 | target_argv = calloc(target_argc + 1, sizeof (char *)); | |
752 | if (target_argv == NULL) { | |
7d37435b PB |
753 | (void) fprintf(stderr, "Unable to allocate memory for target_argv\n"); |
754 | exit(EXIT_FAILURE); | |
7d8cec95 AJ |
755 | } |
756 | ||
757 | /* | |
758 | * If argv0 is specified (using '-0' switch) we replace | |
759 | * argv[0] pointer with the given one. | |
760 | */ | |
761 | i = 0; | |
762 | if (argv0 != NULL) { | |
763 | target_argv[i++] = strdup(argv0); | |
764 | } | |
765 | for (; i < target_argc; i++) { | |
766 | target_argv[i] = strdup(argv[optind + i]); | |
767 | } | |
768 | target_argv[target_argc] = NULL; | |
769 | ||
c78d65e8 | 770 | ts = g_new0(TaskState, 1); |
edf8e2af MW |
771 | init_task_state(ts); |
772 | /* build Task State */ | |
773 | ts->info = info; | |
774 | ts->bprm = &bprm; | |
0429a971 | 775 | cpu->opaque = ts; |
edf8e2af MW |
776 | task_settid(ts); |
777 | ||
03cfd8fa | 778 | ret = loader_exec(execfd, filename, target_argv, target_environ, regs, |
fd4d81dd AP |
779 | info, &bprm); |
780 | if (ret != 0) { | |
885c1d10 | 781 | printf("Error while loading %s: %s\n", filename, strerror(-ret)); |
4d1275c2 | 782 | _exit(EXIT_FAILURE); |
b12b6a18 TS |
783 | } |
784 | ||
785 | for (wrk = target_environ; *wrk; wrk++) { | |
ec45bbe5 | 786 | g_free(*wrk); |
31e31b8a | 787 | } |
3b46e624 | 788 | |
ec45bbe5 | 789 | g_free(target_environ); |
b12b6a18 | 790 | |
13829020 | 791 | if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
379f6698 | 792 | qemu_log("guest_base 0x%lx\n", guest_base); |
2e77eac6 BS |
793 | log_page_dump(); |
794 | ||
795 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
796 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
7c4ee5bc RH |
797 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", info->start_code); |
798 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", info->start_data); | |
2e77eac6 | 799 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
7c4ee5bc | 800 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", info->start_stack); |
2e77eac6 BS |
801 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
802 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
7c4ee5bc RH |
803 | qemu_log("argv_start 0x" TARGET_ABI_FMT_lx "\n", info->arg_start); |
804 | qemu_log("env_start 0x" TARGET_ABI_FMT_lx "\n", | |
805 | info->arg_end + (abi_ulong)sizeof(abi_ulong)); | |
806 | qemu_log("auxv_start 0x" TARGET_ABI_FMT_lx "\n", info->saved_auxv); | |
2e77eac6 | 807 | } |
31e31b8a | 808 | |
53a5960a | 809 | target_set_brk(info->brk); |
31e31b8a | 810 | syscall_init(); |
66fb9763 | 811 | signal_init(); |
31e31b8a | 812 | |
9002ec79 RH |
813 | /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay |
814 | generating the prologue until now so that the prologue can take | |
815 | the real value of GUEST_BASE into account. */ | |
b1311c4a | 816 | tcg_prologue_init(tcg_ctx); |
e8feb96f | 817 | tcg_region_init(); |
9002ec79 | 818 | |
cd71c089 LV |
819 | target_cpu_copy_regs(env, regs); |
820 | ||
74c33bed | 821 | if (gdbstub_port) { |
ff7a981a PM |
822 | if (gdbserver_start(gdbstub_port) < 0) { |
823 | fprintf(stderr, "qemu: could not open gdbserver on port %d\n", | |
824 | gdbstub_port); | |
4d1275c2 | 825 | exit(EXIT_FAILURE); |
ff7a981a | 826 | } |
db6b81d4 | 827 | gdb_handlesig(cpu, 0); |
1fddef4b | 828 | } |
1b6b029e FB |
829 | cpu_loop(env); |
830 | /* never exits */ | |
31e31b8a FB |
831 | return 0; |
832 | } |