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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 | */ |
14a48c1d | 19 | |
d39594e9 | 20 | #include "qemu/osdep.h" |
a8d25326 | 21 | #include "qemu-common.h" |
b52713c1 | 22 | #include "qemu/units.h" |
14a48c1d | 23 | #include "sysemu/tcg.h" |
67a1de0d | 24 | #include "qemu-version.h" |
edf8e2af | 25 | #include <sys/syscall.h> |
703e0e89 | 26 | #include <sys/resource.h> |
31e31b8a | 27 | |
daa76aa4 | 28 | #include "qapi/error.h" |
3ef693a0 | 29 | #include "qemu.h" |
f348b6d1 | 30 | #include "qemu/path.h" |
6533dd6e | 31 | #include "qemu/config-file.h" |
f348b6d1 | 32 | #include "qemu/cutils.h" |
f5852efa | 33 | #include "qemu/error-report.h" |
f348b6d1 | 34 | #include "qemu/help_option.h" |
0b8fa32f | 35 | #include "qemu/module.h" |
2b41f10e | 36 | #include "cpu.h" |
63c91552 | 37 | #include "exec/exec-all.h" |
9002ec79 | 38 | #include "tcg.h" |
1de7afc9 PB |
39 | #include "qemu/timer.h" |
40 | #include "qemu/envlist.h" | |
5ebdd774 | 41 | #include "qemu/guest-random.h" |
d8fd2954 | 42 | #include "elf.h" |
6533dd6e | 43 | #include "trace/control.h" |
542ca434 | 44 | #include "target_elf.h" |
cd71c089 | 45 | #include "cpu_loop-common.h" |
a573e9ba | 46 | #include "crypto/init.h" |
04a6dfeb | 47 | |
d088d664 AJ |
48 | char *exec_path; |
49 | ||
1b530a6d | 50 | int singlestep; |
8cb76755 SW |
51 | static const char *filename; |
52 | static const char *argv0; | |
53 | static int gdbstub_port; | |
54 | static envlist_t *envlist; | |
51fb256a | 55 | static const char *cpu_model; |
2278b939 | 56 | static const char *cpu_type; |
5ebdd774 | 57 | static const char *seed_optarg; |
379f6698 PB |
58 | unsigned long mmap_min_addr; |
59 | unsigned long guest_base; | |
60 | int have_guest_base; | |
120a9848 | 61 | |
288e65b9 AG |
62 | /* |
63 | * When running 32-on-64 we should make sure we can fit all of the possible | |
64 | * guest address space into a contiguous chunk of virtual host memory. | |
65 | * | |
66 | * This way we will never overlap with our own libraries or binaries or stack | |
67 | * or anything else that QEMU maps. | |
18e80c55 RH |
68 | * |
69 | * Many cpus reserve the high bit (or more than one for some 64-bit cpus) | |
70 | * of the address for the kernel. Some cpus rely on this and user space | |
71 | * uses the high bit(s) for pointer tagging and the like. For them, we | |
72 | * must preserve the expected address space. | |
288e65b9 | 73 | */ |
18e80c55 RH |
74 | #ifndef MAX_RESERVED_VA |
75 | # if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS | |
76 | # if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \ | |
77 | (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32)) | |
78 | /* There are a number of places where we assign reserved_va to a variable | |
79 | of type abi_ulong and expect it to fit. Avoid the last page. */ | |
80 | # define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK) | |
81 | # else | |
82 | # define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS) | |
83 | # endif | |
314992b1 | 84 | # else |
18e80c55 | 85 | # define MAX_RESERVED_VA 0 |
314992b1 | 86 | # endif |
18e80c55 RH |
87 | #endif |
88 | ||
68a1c816 | 89 | unsigned long reserved_va; |
1b530a6d | 90 | |
d03f9c32 | 91 | static void usage(int exitcode); |
fc9c5412 | 92 | |
7ee2822c | 93 | static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
e586822a | 94 | const char *qemu_uname_release; |
586314f2 | 95 | |
9de5e440 FB |
96 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so |
97 | we allocate a bigger stack. Need a better solution, for example | |
98 | by remapping the process stack directly at the right place */ | |
703e0e89 | 99 | unsigned long guest_stack_size = 8 * 1024 * 1024UL; |
31e31b8a FB |
100 | |
101 | void gemu_log(const char *fmt, ...) | |
102 | { | |
103 | va_list ap; | |
104 | ||
105 | va_start(ap, fmt); | |
106 | vfprintf(stderr, fmt, ap); | |
107 | va_end(ap); | |
108 | } | |
109 | ||
8fcd3692 | 110 | #if defined(TARGET_I386) |
05390248 | 111 | int cpu_get_pic_interrupt(CPUX86State *env) |
92ccca6a FB |
112 | { |
113 | return -1; | |
114 | } | |
8fcd3692 | 115 | #endif |
92ccca6a | 116 | |
d5975363 PB |
117 | /***********************************************************/ |
118 | /* Helper routines for implementing atomic operations. */ | |
119 | ||
d5975363 PB |
120 | /* Make sure everything is in a consistent state for calling fork(). */ |
121 | void fork_start(void) | |
122 | { | |
06065c45 | 123 | start_exclusive(); |
d032d1b4 | 124 | mmap_fork_start(); |
024949ca | 125 | cpu_list_lock(); |
d5975363 PB |
126 | } |
127 | ||
128 | void fork_end(int child) | |
129 | { | |
d032d1b4 | 130 | mmap_fork_end(child); |
d5975363 | 131 | if (child) { |
bdc44640 | 132 | CPUState *cpu, *next_cpu; |
d5975363 PB |
133 | /* Child processes created by fork() only have a single thread. |
134 | Discard information about the parent threads. */ | |
bdc44640 AF |
135 | CPU_FOREACH_SAFE(cpu, next_cpu) { |
136 | if (cpu != thread_cpu) { | |
068a5ea0 | 137 | QTAILQ_REMOVE_RCU(&cpus, cpu, node); |
bdc44640 AF |
138 | } |
139 | } | |
267f685b | 140 | qemu_init_cpu_list(); |
f7ec7f7b | 141 | gdbserver_fork(thread_cpu); |
06065c45 PM |
142 | /* qemu_init_cpu_list() takes care of reinitializing the |
143 | * exclusive state, so we don't need to end_exclusive() here. | |
144 | */ | |
d5975363 | 145 | } else { |
267f685b | 146 | cpu_list_unlock(); |
06065c45 | 147 | end_exclusive(); |
d5975363 | 148 | } |
d5975363 PB |
149 | } |
150 | ||
b44316fb | 151 | __thread CPUState *thread_cpu; |
59faf6d6 | 152 | |
178f9429 SF |
153 | bool qemu_cpu_is_self(CPUState *cpu) |
154 | { | |
155 | return thread_cpu == cpu; | |
156 | } | |
157 | ||
158 | void qemu_cpu_kick(CPUState *cpu) | |
159 | { | |
160 | cpu_exit(cpu); | |
161 | } | |
162 | ||
edf8e2af MW |
163 | void task_settid(TaskState *ts) |
164 | { | |
165 | if (ts->ts_tid == 0) { | |
edf8e2af | 166 | ts->ts_tid = (pid_t)syscall(SYS_gettid); |
edf8e2af MW |
167 | } |
168 | } | |
169 | ||
170 | void stop_all_tasks(void) | |
171 | { | |
172 | /* | |
173 | * We trust that when using NPTL, start_exclusive() | |
174 | * handles thread stopping correctly. | |
175 | */ | |
176 | start_exclusive(); | |
177 | } | |
178 | ||
c3a92833 | 179 | /* Assumes contents are already zeroed. */ |
624f7979 PB |
180 | void init_task_state(TaskState *ts) |
181 | { | |
624f7979 | 182 | ts->used = 1; |
624f7979 | 183 | } |
fc9c5412 | 184 | |
30ba0ee5 AF |
185 | CPUArchState *cpu_copy(CPUArchState *env) |
186 | { | |
29a0af61 | 187 | CPUState *cpu = env_cpu(env); |
2278b939 | 188 | CPUState *new_cpu = cpu_create(cpu_type); |
61c7480f | 189 | CPUArchState *new_env = new_cpu->env_ptr; |
30ba0ee5 AF |
190 | CPUBreakpoint *bp; |
191 | CPUWatchpoint *wp; | |
30ba0ee5 AF |
192 | |
193 | /* Reset non arch specific state */ | |
75a34036 | 194 | cpu_reset(new_cpu); |
30ba0ee5 AF |
195 | |
196 | memcpy(new_env, env, sizeof(CPUArchState)); | |
197 | ||
198 | /* Clone all break/watchpoints. | |
199 | Note: Once we support ptrace with hw-debug register access, make sure | |
200 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
1d085f6c TB |
201 | QTAILQ_INIT(&new_cpu->breakpoints); |
202 | QTAILQ_INIT(&new_cpu->watchpoints); | |
f0c3c505 | 203 | QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { |
b3310ab3 | 204 | cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL); |
30ba0ee5 | 205 | } |
ff4700b0 | 206 | QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { |
05068c0d | 207 | cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL); |
30ba0ee5 | 208 | } |
30ba0ee5 AF |
209 | |
210 | return new_env; | |
211 | } | |
212 | ||
fc9c5412 JS |
213 | static void handle_arg_help(const char *arg) |
214 | { | |
4d1275c2 | 215 | usage(EXIT_SUCCESS); |
fc9c5412 JS |
216 | } |
217 | ||
218 | static void handle_arg_log(const char *arg) | |
219 | { | |
220 | int mask; | |
fc9c5412 | 221 | |
4fde1eba | 222 | mask = qemu_str_to_log_mask(arg); |
fc9c5412 | 223 | if (!mask) { |
59a6fa6e | 224 | qemu_print_log_usage(stdout); |
4d1275c2 | 225 | exit(EXIT_FAILURE); |
fc9c5412 | 226 | } |
f2937a33 | 227 | qemu_log_needs_buffers(); |
24537a01 | 228 | qemu_set_log(mask); |
fc9c5412 JS |
229 | } |
230 | ||
8423fa90 AB |
231 | static void handle_arg_dfilter(const char *arg) |
232 | { | |
233 | qemu_set_dfilter_ranges(arg, NULL); | |
234 | } | |
235 | ||
50171d42 CWR |
236 | static void handle_arg_log_filename(const char *arg) |
237 | { | |
daa76aa4 | 238 | qemu_set_log_filename(arg, &error_fatal); |
50171d42 CWR |
239 | } |
240 | ||
fc9c5412 JS |
241 | static void handle_arg_set_env(const char *arg) |
242 | { | |
243 | char *r, *p, *token; | |
244 | r = p = strdup(arg); | |
245 | while ((token = strsep(&p, ",")) != NULL) { | |
246 | if (envlist_setenv(envlist, token) != 0) { | |
4d1275c2 | 247 | usage(EXIT_FAILURE); |
fc9c5412 JS |
248 | } |
249 | } | |
250 | free(r); | |
251 | } | |
252 | ||
253 | static void handle_arg_unset_env(const char *arg) | |
254 | { | |
255 | char *r, *p, *token; | |
256 | r = p = strdup(arg); | |
257 | while ((token = strsep(&p, ",")) != NULL) { | |
258 | if (envlist_unsetenv(envlist, token) != 0) { | |
4d1275c2 | 259 | usage(EXIT_FAILURE); |
fc9c5412 JS |
260 | } |
261 | } | |
262 | free(r); | |
263 | } | |
264 | ||
265 | static void handle_arg_argv0(const char *arg) | |
266 | { | |
267 | argv0 = strdup(arg); | |
268 | } | |
269 | ||
270 | static void handle_arg_stack_size(const char *arg) | |
271 | { | |
272 | char *p; | |
273 | guest_stack_size = strtoul(arg, &p, 0); | |
274 | if (guest_stack_size == 0) { | |
4d1275c2 | 275 | usage(EXIT_FAILURE); |
fc9c5412 JS |
276 | } |
277 | ||
278 | if (*p == 'M') { | |
b52713c1 | 279 | guest_stack_size *= MiB; |
fc9c5412 | 280 | } else if (*p == 'k' || *p == 'K') { |
b52713c1 | 281 | guest_stack_size *= KiB; |
fc9c5412 JS |
282 | } |
283 | } | |
284 | ||
285 | static void handle_arg_ld_prefix(const char *arg) | |
286 | { | |
287 | interp_prefix = strdup(arg); | |
288 | } | |
289 | ||
290 | static void handle_arg_pagesize(const char *arg) | |
291 | { | |
292 | qemu_host_page_size = atoi(arg); | |
293 | if (qemu_host_page_size == 0 || | |
294 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
295 | fprintf(stderr, "page size must be a power of two\n"); | |
4d1275c2 | 296 | exit(EXIT_FAILURE); |
fc9c5412 JS |
297 | } |
298 | } | |
299 | ||
5ebdd774 | 300 | static void handle_arg_seed(const char *arg) |
c5e4a5a9 | 301 | { |
5ebdd774 | 302 | seed_optarg = arg; |
c5e4a5a9 MR |
303 | } |
304 | ||
fc9c5412 JS |
305 | static void handle_arg_gdb(const char *arg) |
306 | { | |
307 | gdbstub_port = atoi(arg); | |
308 | } | |
309 | ||
310 | static void handle_arg_uname(const char *arg) | |
311 | { | |
312 | qemu_uname_release = strdup(arg); | |
313 | } | |
314 | ||
315 | static void handle_arg_cpu(const char *arg) | |
316 | { | |
317 | cpu_model = strdup(arg); | |
c8057f95 | 318 | if (cpu_model == NULL || is_help_option(cpu_model)) { |
fc9c5412 | 319 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
e916cbf8 | 320 | #if defined(cpu_list) |
0442428a | 321 | cpu_list(); |
fc9c5412 | 322 | #endif |
4d1275c2 | 323 | exit(EXIT_FAILURE); |
fc9c5412 JS |
324 | } |
325 | } | |
326 | ||
fc9c5412 JS |
327 | static void handle_arg_guest_base(const char *arg) |
328 | { | |
329 | guest_base = strtol(arg, NULL, 0); | |
330 | have_guest_base = 1; | |
331 | } | |
332 | ||
333 | static void handle_arg_reserved_va(const char *arg) | |
334 | { | |
335 | char *p; | |
336 | int shift = 0; | |
337 | reserved_va = strtoul(arg, &p, 0); | |
338 | switch (*p) { | |
339 | case 'k': | |
340 | case 'K': | |
341 | shift = 10; | |
342 | break; | |
343 | case 'M': | |
344 | shift = 20; | |
345 | break; | |
346 | case 'G': | |
347 | shift = 30; | |
348 | break; | |
349 | } | |
350 | if (shift) { | |
351 | unsigned long unshifted = reserved_va; | |
352 | p++; | |
353 | reserved_va <<= shift; | |
18e80c55 RH |
354 | if (reserved_va >> shift != unshifted |
355 | || (MAX_RESERVED_VA && reserved_va > MAX_RESERVED_VA)) { | |
fc9c5412 | 356 | fprintf(stderr, "Reserved virtual address too big\n"); |
4d1275c2 | 357 | exit(EXIT_FAILURE); |
fc9c5412 JS |
358 | } |
359 | } | |
360 | if (*p) { | |
361 | fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p); | |
4d1275c2 | 362 | exit(EXIT_FAILURE); |
fc9c5412 JS |
363 | } |
364 | } | |
fc9c5412 JS |
365 | |
366 | static void handle_arg_singlestep(const char *arg) | |
367 | { | |
368 | singlestep = 1; | |
369 | } | |
370 | ||
371 | static void handle_arg_strace(const char *arg) | |
372 | { | |
373 | do_strace = 1; | |
374 | } | |
375 | ||
376 | static void handle_arg_version(const char *arg) | |
377 | { | |
7e563bfb | 378 | printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
0781dd6e | 379 | "\n" QEMU_COPYRIGHT "\n"); |
4d1275c2 | 380 | exit(EXIT_SUCCESS); |
fc9c5412 JS |
381 | } |
382 | ||
6533dd6e LV |
383 | static char *trace_file; |
384 | static void handle_arg_trace(const char *arg) | |
385 | { | |
386 | g_free(trace_file); | |
387 | trace_file = trace_opt_parse(arg); | |
388 | } | |
389 | ||
fc9c5412 JS |
390 | struct qemu_argument { |
391 | const char *argv; | |
392 | const char *env; | |
393 | bool has_arg; | |
394 | void (*handle_opt)(const char *arg); | |
395 | const char *example; | |
396 | const char *help; | |
397 | }; | |
398 | ||
42644cee | 399 | static const struct qemu_argument arg_table[] = { |
fc9c5412 JS |
400 | {"h", "", false, handle_arg_help, |
401 | "", "print this help"}, | |
daaf8c8e MI |
402 | {"help", "", false, handle_arg_help, |
403 | "", ""}, | |
fc9c5412 JS |
404 | {"g", "QEMU_GDB", true, handle_arg_gdb, |
405 | "port", "wait gdb connection to 'port'"}, | |
406 | {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix, | |
407 | "path", "set the elf interpreter prefix to 'path'"}, | |
408 | {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size, | |
409 | "size", "set the stack size to 'size' bytes"}, | |
410 | {"cpu", "QEMU_CPU", true, handle_arg_cpu, | |
c8057f95 | 411 | "model", "select CPU (-cpu help for list)"}, |
fc9c5412 JS |
412 | {"E", "QEMU_SET_ENV", true, handle_arg_set_env, |
413 | "var=value", "sets targets environment variable (see below)"}, | |
414 | {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env, | |
415 | "var", "unsets targets environment variable (see below)"}, | |
416 | {"0", "QEMU_ARGV0", true, handle_arg_argv0, | |
417 | "argv0", "forces target process argv[0] to be 'argv0'"}, | |
418 | {"r", "QEMU_UNAME", true, handle_arg_uname, | |
419 | "uname", "set qemu uname release string to 'uname'"}, | |
fc9c5412 JS |
420 | {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base, |
421 | "address", "set guest_base address to 'address'"}, | |
422 | {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va, | |
423 | "size", "reserve 'size' bytes for guest virtual address space"}, | |
fc9c5412 | 424 | {"d", "QEMU_LOG", true, handle_arg_log, |
989b697d PM |
425 | "item[,...]", "enable logging of specified items " |
426 | "(use '-d help' for a list of items)"}, | |
8423fa90 AB |
427 | {"dfilter", "QEMU_DFILTER", true, handle_arg_dfilter, |
428 | "range[,...]","filter logging based on address range"}, | |
50171d42 | 429 | {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename, |
989b697d | 430 | "logfile", "write logs to 'logfile' (default stderr)"}, |
fc9c5412 JS |
431 | {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize, |
432 | "pagesize", "set the host page size to 'pagesize'"}, | |
433 | {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep, | |
434 | "", "run in singlestep mode"}, | |
435 | {"strace", "QEMU_STRACE", false, handle_arg_strace, | |
436 | "", "log system calls"}, | |
5ebdd774 | 437 | {"seed", "QEMU_RAND_SEED", true, handle_arg_seed, |
c5e4a5a9 | 438 | "", "Seed for pseudo-random number generator"}, |
6533dd6e LV |
439 | {"trace", "QEMU_TRACE", true, handle_arg_trace, |
440 | "", "[[enable=]<pattern>][,events=<file>][,file=<file>]"}, | |
fc9c5412 | 441 | {"version", "QEMU_VERSION", false, handle_arg_version, |
1386d4c0 | 442 | "", "display version information and exit"}, |
fc9c5412 JS |
443 | {NULL, NULL, false, NULL, NULL, NULL} |
444 | }; | |
445 | ||
d03f9c32 | 446 | static void usage(int exitcode) |
fc9c5412 | 447 | { |
42644cee | 448 | const struct qemu_argument *arginfo; |
fc9c5412 JS |
449 | int maxarglen; |
450 | int maxenvlen; | |
451 | ||
2e59915d PB |
452 | printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
453 | "Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n" | |
fc9c5412 JS |
454 | "\n" |
455 | "Options and associated environment variables:\n" | |
456 | "\n"); | |
457 | ||
63ec54d7 PM |
458 | /* Calculate column widths. We must always have at least enough space |
459 | * for the column header. | |
460 | */ | |
461 | maxarglen = strlen("Argument"); | |
462 | maxenvlen = strlen("Env-variable"); | |
fc9c5412 JS |
463 | |
464 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
63ec54d7 PM |
465 | int arglen = strlen(arginfo->argv); |
466 | if (arginfo->has_arg) { | |
467 | arglen += strlen(arginfo->example) + 1; | |
468 | } | |
fc9c5412 JS |
469 | if (strlen(arginfo->env) > maxenvlen) { |
470 | maxenvlen = strlen(arginfo->env); | |
471 | } | |
63ec54d7 PM |
472 | if (arglen > maxarglen) { |
473 | maxarglen = arglen; | |
fc9c5412 JS |
474 | } |
475 | } | |
476 | ||
63ec54d7 PM |
477 | printf("%-*s %-*s Description\n", maxarglen+1, "Argument", |
478 | maxenvlen, "Env-variable"); | |
fc9c5412 JS |
479 | |
480 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
481 | if (arginfo->has_arg) { | |
482 | printf("-%s %-*s %-*s %s\n", arginfo->argv, | |
63ec54d7 PM |
483 | (int)(maxarglen - strlen(arginfo->argv) - 1), |
484 | arginfo->example, maxenvlen, arginfo->env, arginfo->help); | |
fc9c5412 | 485 | } else { |
63ec54d7 | 486 | printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv, |
fc9c5412 JS |
487 | maxenvlen, arginfo->env, |
488 | arginfo->help); | |
489 | } | |
490 | } | |
491 | ||
492 | printf("\n" | |
493 | "Defaults:\n" | |
494 | "QEMU_LD_PREFIX = %s\n" | |
989b697d | 495 | "QEMU_STACK_SIZE = %ld byte\n", |
fc9c5412 | 496 | interp_prefix, |
989b697d | 497 | guest_stack_size); |
fc9c5412 JS |
498 | |
499 | printf("\n" | |
500 | "You can use -E and -U options or the QEMU_SET_ENV and\n" | |
501 | "QEMU_UNSET_ENV environment variables to set and unset\n" | |
502 | "environment variables for the target process.\n" | |
503 | "It is possible to provide several variables by separating them\n" | |
504 | "by commas in getsubopt(3) style. Additionally it is possible to\n" | |
505 | "provide the -E and -U options multiple times.\n" | |
506 | "The following lines are equivalent:\n" | |
507 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
508 | " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n" | |
509 | " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n" | |
510 | "Note that if you provide several changes to a single variable\n" | |
f5048cb7 EB |
511 | "the last change will stay in effect.\n" |
512 | "\n" | |
513 | QEMU_HELP_BOTTOM "\n"); | |
fc9c5412 | 514 | |
d03f9c32 | 515 | exit(exitcode); |
fc9c5412 JS |
516 | } |
517 | ||
518 | static int parse_args(int argc, char **argv) | |
519 | { | |
520 | const char *r; | |
521 | int optind; | |
42644cee | 522 | const struct qemu_argument *arginfo; |
fc9c5412 JS |
523 | |
524 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
525 | if (arginfo->env == NULL) { | |
526 | continue; | |
527 | } | |
528 | ||
529 | r = getenv(arginfo->env); | |
530 | if (r != NULL) { | |
531 | arginfo->handle_opt(r); | |
532 | } | |
533 | } | |
534 | ||
535 | optind = 1; | |
536 | for (;;) { | |
537 | if (optind >= argc) { | |
538 | break; | |
539 | } | |
540 | r = argv[optind]; | |
541 | if (r[0] != '-') { | |
542 | break; | |
543 | } | |
544 | optind++; | |
545 | r++; | |
546 | if (!strcmp(r, "-")) { | |
547 | break; | |
548 | } | |
ba02577c MI |
549 | /* Treat --foo the same as -foo. */ |
550 | if (r[0] == '-') { | |
551 | r++; | |
552 | } | |
fc9c5412 JS |
553 | |
554 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
555 | if (!strcmp(r, arginfo->argv)) { | |
fc9c5412 | 556 | if (arginfo->has_arg) { |
1386d4c0 | 557 | if (optind >= argc) { |
138940bf MI |
558 | (void) fprintf(stderr, |
559 | "qemu: missing argument for option '%s'\n", r); | |
4d1275c2 | 560 | exit(EXIT_FAILURE); |
1386d4c0 PM |
561 | } |
562 | arginfo->handle_opt(argv[optind]); | |
fc9c5412 | 563 | optind++; |
1386d4c0 PM |
564 | } else { |
565 | arginfo->handle_opt(NULL); | |
fc9c5412 | 566 | } |
fc9c5412 JS |
567 | break; |
568 | } | |
569 | } | |
570 | ||
571 | /* no option matched the current argv */ | |
572 | if (arginfo->handle_opt == NULL) { | |
138940bf | 573 | (void) fprintf(stderr, "qemu: unknown option '%s'\n", r); |
4d1275c2 | 574 | exit(EXIT_FAILURE); |
fc9c5412 JS |
575 | } |
576 | } | |
577 | ||
578 | if (optind >= argc) { | |
138940bf | 579 | (void) fprintf(stderr, "qemu: no user program specified\n"); |
4d1275c2 | 580 | exit(EXIT_FAILURE); |
fc9c5412 JS |
581 | } |
582 | ||
583 | filename = argv[optind]; | |
584 | exec_path = argv[optind]; | |
585 | ||
586 | return optind; | |
587 | } | |
588 | ||
902b3d5c | 589 | int main(int argc, char **argv, char **envp) |
31e31b8a | 590 | { |
01ffc75b | 591 | struct target_pt_regs regs1, *regs = ®s1; |
31e31b8a | 592 | struct image_info info1, *info = &info1; |
edf8e2af | 593 | struct linux_binprm bprm; |
48e15fc2 | 594 | TaskState *ts; |
9349b4f9 | 595 | CPUArchState *env; |
db6b81d4 | 596 | CPUState *cpu; |
586314f2 | 597 | int optind; |
04a6dfeb | 598 | char **target_environ, **wrk; |
7d8cec95 AJ |
599 | char **target_argv; |
600 | int target_argc; | |
7d8cec95 | 601 | int i; |
fd4d81dd | 602 | int ret; |
03cfd8fa | 603 | int execfd; |
b12b6a18 | 604 | |
f5852efa | 605 | error_init(argv[0]); |
fe4db84d | 606 | module_call_init(MODULE_INIT_TRACE); |
267f685b | 607 | qemu_init_cpu_list(); |
ce008c1f AF |
608 | module_call_init(MODULE_INIT_QOM); |
609 | ||
ec45bbe5 | 610 | envlist = envlist_create(); |
04a6dfeb AJ |
611 | |
612 | /* add current environment into the list */ | |
613 | for (wrk = environ; *wrk != NULL; wrk++) { | |
614 | (void) envlist_setenv(envlist, *wrk); | |
615 | } | |
616 | ||
703e0e89 RH |
617 | /* Read the stack limit from the kernel. If it's "unlimited", |
618 | then we can do little else besides use the default. */ | |
619 | { | |
620 | struct rlimit lim; | |
621 | if (getrlimit(RLIMIT_STACK, &lim) == 0 | |
81bbe906 TY |
622 | && lim.rlim_cur != RLIM_INFINITY |
623 | && lim.rlim_cur == (target_long)lim.rlim_cur) { | |
703e0e89 RH |
624 | guest_stack_size = lim.rlim_cur; |
625 | } | |
626 | } | |
627 | ||
b1f9be31 | 628 | cpu_model = NULL; |
b5ec5ce0 | 629 | |
6533dd6e LV |
630 | qemu_add_opts(&qemu_trace_opts); |
631 | ||
fc9c5412 | 632 | optind = parse_args(argc, argv); |
586314f2 | 633 | |
6533dd6e LV |
634 | if (!trace_init_backends()) { |
635 | exit(1); | |
636 | } | |
637 | trace_init_file(trace_file); | |
638 | ||
31e31b8a | 639 | /* Zero out regs */ |
01ffc75b | 640 | memset(regs, 0, sizeof(struct target_pt_regs)); |
31e31b8a FB |
641 | |
642 | /* Zero out image_info */ | |
643 | memset(info, 0, sizeof(struct image_info)); | |
644 | ||
edf8e2af MW |
645 | memset(&bprm, 0, sizeof (bprm)); |
646 | ||
74cd30b8 FB |
647 | /* Scan interp_prefix dir for replacement files. */ |
648 | init_paths(interp_prefix); | |
649 | ||
4a24a758 PM |
650 | init_qemu_uname_release(); |
651 | ||
768fe76e YS |
652 | execfd = qemu_getauxval(AT_EXECFD); |
653 | if (execfd == 0) { | |
654 | execfd = open(filename, O_RDONLY); | |
655 | if (execfd < 0) { | |
656 | printf("Error while loading %s: %s\n", filename, strerror(errno)); | |
657 | _exit(EXIT_FAILURE); | |
658 | } | |
659 | } | |
660 | ||
46027c07 | 661 | if (cpu_model == NULL) { |
768fe76e | 662 | cpu_model = cpu_get_model(get_elf_eflags(execfd)); |
aaed909a | 663 | } |
c1c8cfe5 | 664 | cpu_type = parse_cpu_option(cpu_model); |
2278b939 | 665 | |
2b5249b8 | 666 | /* init tcg before creating CPUs and to get qemu_host_page_size */ |
d5ab9713 | 667 | tcg_exec_init(0); |
2278b939 | 668 | |
dc18baae LV |
669 | /* Reserving *too* much vm space via mmap can run into problems |
670 | with rlimits, oom due to page table creation, etc. We will still try it, | |
671 | if directed by the command-line option, but not by default. */ | |
672 | if (HOST_LONG_BITS == 64 && | |
673 | TARGET_VIRT_ADDR_SPACE_BITS <= 32 && | |
674 | reserved_va == 0) { | |
675 | /* reserved_va must be aligned with the host page size | |
676 | * as it is used with mmap() | |
677 | */ | |
678 | reserved_va = MAX_RESERVED_VA & qemu_host_page_mask; | |
679 | } | |
680 | ||
2278b939 | 681 | cpu = cpu_create(cpu_type); |
2994fd96 | 682 | env = cpu->env_ptr; |
0ac46af3 | 683 | cpu_reset(cpu); |
b55a37c9 | 684 | |
db6b81d4 | 685 | thread_cpu = cpu; |
3b46e624 | 686 | |
b6741956 FB |
687 | if (getenv("QEMU_STRACE")) { |
688 | do_strace = 1; | |
b92c47c1 TS |
689 | } |
690 | ||
5ebdd774 RH |
691 | if (seed_optarg == NULL) { |
692 | seed_optarg = getenv("QEMU_RAND_SEED"); | |
693 | } | |
a573e9ba RH |
694 | { |
695 | Error *err = NULL; | |
696 | if (seed_optarg != NULL) { | |
a573e9ba RH |
697 | qemu_guest_random_seed_main(seed_optarg, &err); |
698 | } else { | |
699 | qcrypto_init(&err); | |
700 | } | |
701 | if (err) { | |
702 | error_reportf_err(err, "cannot initialize crypto: "); | |
703 | exit(1); | |
5ebdd774 | 704 | } |
c5e4a5a9 MR |
705 | } |
706 | ||
04a6dfeb AJ |
707 | target_environ = envlist_to_environ(envlist, NULL); |
708 | envlist_free(envlist); | |
b12b6a18 | 709 | |
379f6698 | 710 | /* |
2b5249b8 | 711 | * Now that page sizes are configured in tcg_exec_init() we can do |
379f6698 PB |
712 | * proper page alignment for guest_base. |
713 | */ | |
714 | guest_base = HOST_PAGE_ALIGN(guest_base); | |
68a1c816 | 715 | |
806d1021 MI |
716 | if (reserved_va || have_guest_base) { |
717 | guest_base = init_guest_space(guest_base, reserved_va, 0, | |
718 | have_guest_base); | |
719 | if (guest_base == (unsigned long)-1) { | |
097b8cb8 PM |
720 | fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address " |
721 | "space for use as guest address space (check your virtual " | |
722 | "memory ulimit setting or reserve less using -R option)\n", | |
723 | reserved_va); | |
4d1275c2 | 724 | exit(EXIT_FAILURE); |
68a1c816 | 725 | } |
97cc7560 | 726 | |
806d1021 MI |
727 | if (reserved_va) { |
728 | mmap_next_start = reserved_va; | |
97cc7560 DDAG |
729 | } |
730 | } | |
379f6698 PB |
731 | |
732 | /* | |
733 | * Read in mmap_min_addr kernel parameter. This value is used | |
734 | * When loading the ELF image to determine whether guest_base | |
14f24e14 | 735 | * is needed. It is also used in mmap_find_vma. |
379f6698 | 736 | */ |
14f24e14 | 737 | { |
379f6698 PB |
738 | FILE *fp; |
739 | ||
740 | if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { | |
741 | unsigned long tmp; | |
742 | if (fscanf(fp, "%lu", &tmp) == 1) { | |
743 | mmap_min_addr = tmp; | |
13829020 | 744 | qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr); |
379f6698 PB |
745 | } |
746 | fclose(fp); | |
747 | } | |
748 | } | |
379f6698 | 749 | |
7d8cec95 AJ |
750 | /* |
751 | * Prepare copy of argv vector for target. | |
752 | */ | |
753 | target_argc = argc - optind; | |
754 | target_argv = calloc(target_argc + 1, sizeof (char *)); | |
755 | if (target_argv == NULL) { | |
7d37435b PB |
756 | (void) fprintf(stderr, "Unable to allocate memory for target_argv\n"); |
757 | exit(EXIT_FAILURE); | |
7d8cec95 AJ |
758 | } |
759 | ||
760 | /* | |
761 | * If argv0 is specified (using '-0' switch) we replace | |
762 | * argv[0] pointer with the given one. | |
763 | */ | |
764 | i = 0; | |
765 | if (argv0 != NULL) { | |
766 | target_argv[i++] = strdup(argv0); | |
767 | } | |
768 | for (; i < target_argc; i++) { | |
769 | target_argv[i] = strdup(argv[optind + i]); | |
770 | } | |
771 | target_argv[target_argc] = NULL; | |
772 | ||
c78d65e8 | 773 | ts = g_new0(TaskState, 1); |
edf8e2af MW |
774 | init_task_state(ts); |
775 | /* build Task State */ | |
776 | ts->info = info; | |
777 | ts->bprm = &bprm; | |
0429a971 | 778 | cpu->opaque = ts; |
edf8e2af MW |
779 | task_settid(ts); |
780 | ||
03cfd8fa | 781 | ret = loader_exec(execfd, filename, target_argv, target_environ, regs, |
fd4d81dd AP |
782 | info, &bprm); |
783 | if (ret != 0) { | |
885c1d10 | 784 | printf("Error while loading %s: %s\n", filename, strerror(-ret)); |
4d1275c2 | 785 | _exit(EXIT_FAILURE); |
b12b6a18 TS |
786 | } |
787 | ||
788 | for (wrk = target_environ; *wrk; wrk++) { | |
ec45bbe5 | 789 | g_free(*wrk); |
31e31b8a | 790 | } |
3b46e624 | 791 | |
ec45bbe5 | 792 | g_free(target_environ); |
b12b6a18 | 793 | |
13829020 | 794 | if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
379f6698 | 795 | qemu_log("guest_base 0x%lx\n", guest_base); |
2e77eac6 BS |
796 | log_page_dump(); |
797 | ||
798 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
799 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
7c4ee5bc RH |
800 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", info->start_code); |
801 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", info->start_data); | |
2e77eac6 | 802 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
7c4ee5bc | 803 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", info->start_stack); |
2e77eac6 BS |
804 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
805 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
7c4ee5bc RH |
806 | qemu_log("argv_start 0x" TARGET_ABI_FMT_lx "\n", info->arg_start); |
807 | qemu_log("env_start 0x" TARGET_ABI_FMT_lx "\n", | |
808 | info->arg_end + (abi_ulong)sizeof(abi_ulong)); | |
809 | qemu_log("auxv_start 0x" TARGET_ABI_FMT_lx "\n", info->saved_auxv); | |
2e77eac6 | 810 | } |
31e31b8a | 811 | |
53a5960a | 812 | target_set_brk(info->brk); |
31e31b8a | 813 | syscall_init(); |
66fb9763 | 814 | signal_init(); |
31e31b8a | 815 | |
9002ec79 RH |
816 | /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay |
817 | generating the prologue until now so that the prologue can take | |
818 | the real value of GUEST_BASE into account. */ | |
b1311c4a | 819 | tcg_prologue_init(tcg_ctx); |
e8feb96f | 820 | tcg_region_init(); |
9002ec79 | 821 | |
cd71c089 LV |
822 | target_cpu_copy_regs(env, regs); |
823 | ||
74c33bed | 824 | if (gdbstub_port) { |
ff7a981a PM |
825 | if (gdbserver_start(gdbstub_port) < 0) { |
826 | fprintf(stderr, "qemu: could not open gdbserver on port %d\n", | |
827 | gdbstub_port); | |
4d1275c2 | 828 | exit(EXIT_FAILURE); |
ff7a981a | 829 | } |
db6b81d4 | 830 | gdb_handlesig(cpu, 0); |
1fddef4b | 831 | } |
1b6b029e FB |
832 | cpu_loop(env); |
833 | /* never exits */ | |
31e31b8a FB |
834 | return 0; |
835 | } |