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Commit | Line | Data |
---|---|---|
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" |
dc5e9ac7 | 31 | #include "qemu/queue.h" |
6533dd6e | 32 | #include "qemu/config-file.h" |
f348b6d1 | 33 | #include "qemu/cutils.h" |
f5852efa | 34 | #include "qemu/error-report.h" |
f348b6d1 | 35 | #include "qemu/help_option.h" |
0b8fa32f | 36 | #include "qemu/module.h" |
2b41f10e | 37 | #include "cpu.h" |
63c91552 | 38 | #include "exec/exec-all.h" |
9002ec79 | 39 | #include "tcg.h" |
1de7afc9 PB |
40 | #include "qemu/timer.h" |
41 | #include "qemu/envlist.h" | |
5ebdd774 | 42 | #include "qemu/guest-random.h" |
d8fd2954 | 43 | #include "elf.h" |
6533dd6e | 44 | #include "trace/control.h" |
542ca434 | 45 | #include "target_elf.h" |
cd71c089 | 46 | #include "cpu_loop-common.h" |
a573e9ba | 47 | #include "crypto/init.h" |
04a6dfeb | 48 | |
d088d664 AJ |
49 | char *exec_path; |
50 | ||
1b530a6d | 51 | int singlestep; |
8cb76755 SW |
52 | static const char *filename; |
53 | static const char *argv0; | |
54 | static int gdbstub_port; | |
55 | static envlist_t *envlist; | |
51fb256a | 56 | static const char *cpu_model; |
2278b939 | 57 | static const char *cpu_type; |
5ebdd774 | 58 | static const char *seed_optarg; |
379f6698 PB |
59 | unsigned long mmap_min_addr; |
60 | unsigned long guest_base; | |
61 | int have_guest_base; | |
120a9848 | 62 | |
288e65b9 AG |
63 | /* |
64 | * When running 32-on-64 we should make sure we can fit all of the possible | |
65 | * guest address space into a contiguous chunk of virtual host memory. | |
66 | * | |
67 | * This way we will never overlap with our own libraries or binaries or stack | |
68 | * or anything else that QEMU maps. | |
18e80c55 RH |
69 | * |
70 | * Many cpus reserve the high bit (or more than one for some 64-bit cpus) | |
71 | * of the address for the kernel. Some cpus rely on this and user space | |
72 | * uses the high bit(s) for pointer tagging and the like. For them, we | |
73 | * must preserve the expected address space. | |
288e65b9 | 74 | */ |
18e80c55 RH |
75 | #ifndef MAX_RESERVED_VA |
76 | # if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS | |
77 | # if TARGET_VIRT_ADDR_SPACE_BITS == 32 && \ | |
78 | (TARGET_LONG_BITS == 32 || defined(TARGET_ABI32)) | |
79 | /* There are a number of places where we assign reserved_va to a variable | |
80 | of type abi_ulong and expect it to fit. Avoid the last page. */ | |
81 | # define MAX_RESERVED_VA (0xfffffffful & TARGET_PAGE_MASK) | |
82 | # else | |
83 | # define MAX_RESERVED_VA (1ul << TARGET_VIRT_ADDR_SPACE_BITS) | |
84 | # endif | |
314992b1 | 85 | # else |
18e80c55 | 86 | # define MAX_RESERVED_VA 0 |
314992b1 | 87 | # endif |
18e80c55 RH |
88 | #endif |
89 | ||
68a1c816 | 90 | unsigned long reserved_va; |
1b530a6d | 91 | |
d03f9c32 | 92 | static void usage(int exitcode); |
fc9c5412 | 93 | |
7ee2822c | 94 | static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
e586822a | 95 | const char *qemu_uname_release; |
586314f2 | 96 | |
9de5e440 FB |
97 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so |
98 | we allocate a bigger stack. Need a better solution, for example | |
99 | by remapping the process stack directly at the right place */ | |
703e0e89 | 100 | unsigned long guest_stack_size = 8 * 1024 * 1024UL; |
31e31b8a FB |
101 | |
102 | void gemu_log(const char *fmt, ...) | |
103 | { | |
104 | va_list ap; | |
105 | ||
106 | va_start(ap, fmt); | |
107 | vfprintf(stderr, fmt, ap); | |
108 | va_end(ap); | |
109 | } | |
110 | ||
8fcd3692 | 111 | #if defined(TARGET_I386) |
05390248 | 112 | int cpu_get_pic_interrupt(CPUX86State *env) |
92ccca6a FB |
113 | { |
114 | return -1; | |
115 | } | |
8fcd3692 | 116 | #endif |
92ccca6a | 117 | |
d5975363 PB |
118 | /***********************************************************/ |
119 | /* Helper routines for implementing atomic operations. */ | |
120 | ||
d5975363 PB |
121 | /* Make sure everything is in a consistent state for calling fork(). */ |
122 | void fork_start(void) | |
123 | { | |
06065c45 | 124 | start_exclusive(); |
d032d1b4 | 125 | mmap_fork_start(); |
024949ca | 126 | cpu_list_lock(); |
d5975363 PB |
127 | } |
128 | ||
129 | void fork_end(int child) | |
130 | { | |
d032d1b4 | 131 | mmap_fork_end(child); |
d5975363 | 132 | if (child) { |
bdc44640 | 133 | CPUState *cpu, *next_cpu; |
d5975363 PB |
134 | /* Child processes created by fork() only have a single thread. |
135 | Discard information about the parent threads. */ | |
bdc44640 AF |
136 | CPU_FOREACH_SAFE(cpu, next_cpu) { |
137 | if (cpu != thread_cpu) { | |
068a5ea0 | 138 | QTAILQ_REMOVE_RCU(&cpus, cpu, node); |
bdc44640 AF |
139 | } |
140 | } | |
267f685b | 141 | qemu_init_cpu_list(); |
f7ec7f7b | 142 | gdbserver_fork(thread_cpu); |
06065c45 PM |
143 | /* qemu_init_cpu_list() takes care of reinitializing the |
144 | * exclusive state, so we don't need to end_exclusive() here. | |
145 | */ | |
d5975363 | 146 | } else { |
267f685b | 147 | cpu_list_unlock(); |
06065c45 | 148 | end_exclusive(); |
d5975363 | 149 | } |
d5975363 PB |
150 | } |
151 | ||
b44316fb | 152 | __thread CPUState *thread_cpu; |
59faf6d6 | 153 | |
178f9429 SF |
154 | bool qemu_cpu_is_self(CPUState *cpu) |
155 | { | |
156 | return thread_cpu == cpu; | |
157 | } | |
158 | ||
159 | void qemu_cpu_kick(CPUState *cpu) | |
160 | { | |
161 | cpu_exit(cpu); | |
162 | } | |
163 | ||
edf8e2af MW |
164 | void task_settid(TaskState *ts) |
165 | { | |
166 | if (ts->ts_tid == 0) { | |
edf8e2af | 167 | ts->ts_tid = (pid_t)syscall(SYS_gettid); |
edf8e2af MW |
168 | } |
169 | } | |
170 | ||
171 | void stop_all_tasks(void) | |
172 | { | |
173 | /* | |
174 | * We trust that when using NPTL, start_exclusive() | |
175 | * handles thread stopping correctly. | |
176 | */ | |
177 | start_exclusive(); | |
178 | } | |
179 | ||
c3a92833 | 180 | /* Assumes contents are already zeroed. */ |
624f7979 PB |
181 | void init_task_state(TaskState *ts) |
182 | { | |
624f7979 | 183 | ts->used = 1; |
5bfce0b7 PM |
184 | ts->sigaltstack_used = (struct target_sigaltstack) { |
185 | .ss_sp = 0, | |
186 | .ss_size = 0, | |
187 | .ss_flags = TARGET_SS_DISABLE, | |
188 | }; | |
624f7979 | 189 | } |
fc9c5412 | 190 | |
30ba0ee5 AF |
191 | CPUArchState *cpu_copy(CPUArchState *env) |
192 | { | |
29a0af61 | 193 | CPUState *cpu = env_cpu(env); |
2278b939 | 194 | CPUState *new_cpu = cpu_create(cpu_type); |
61c7480f | 195 | CPUArchState *new_env = new_cpu->env_ptr; |
30ba0ee5 AF |
196 | CPUBreakpoint *bp; |
197 | CPUWatchpoint *wp; | |
30ba0ee5 AF |
198 | |
199 | /* Reset non arch specific state */ | |
75a34036 | 200 | cpu_reset(new_cpu); |
30ba0ee5 AF |
201 | |
202 | memcpy(new_env, env, sizeof(CPUArchState)); | |
203 | ||
204 | /* Clone all break/watchpoints. | |
205 | Note: Once we support ptrace with hw-debug register access, make sure | |
206 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
1d085f6c TB |
207 | QTAILQ_INIT(&new_cpu->breakpoints); |
208 | QTAILQ_INIT(&new_cpu->watchpoints); | |
f0c3c505 | 209 | QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { |
b3310ab3 | 210 | cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL); |
30ba0ee5 | 211 | } |
ff4700b0 | 212 | QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { |
05068c0d | 213 | cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL); |
30ba0ee5 | 214 | } |
30ba0ee5 AF |
215 | |
216 | return new_env; | |
217 | } | |
218 | ||
fc9c5412 JS |
219 | static void handle_arg_help(const char *arg) |
220 | { | |
4d1275c2 | 221 | usage(EXIT_SUCCESS); |
fc9c5412 JS |
222 | } |
223 | ||
224 | static void handle_arg_log(const char *arg) | |
225 | { | |
226 | int mask; | |
fc9c5412 | 227 | |
4fde1eba | 228 | mask = qemu_str_to_log_mask(arg); |
fc9c5412 | 229 | if (!mask) { |
59a6fa6e | 230 | qemu_print_log_usage(stdout); |
4d1275c2 | 231 | exit(EXIT_FAILURE); |
fc9c5412 | 232 | } |
f2937a33 | 233 | qemu_log_needs_buffers(); |
24537a01 | 234 | qemu_set_log(mask); |
fc9c5412 JS |
235 | } |
236 | ||
8423fa90 AB |
237 | static void handle_arg_dfilter(const char *arg) |
238 | { | |
239 | qemu_set_dfilter_ranges(arg, NULL); | |
240 | } | |
241 | ||
50171d42 CWR |
242 | static void handle_arg_log_filename(const char *arg) |
243 | { | |
daa76aa4 | 244 | qemu_set_log_filename(arg, &error_fatal); |
50171d42 CWR |
245 | } |
246 | ||
fc9c5412 JS |
247 | static void handle_arg_set_env(const char *arg) |
248 | { | |
249 | char *r, *p, *token; | |
250 | r = p = strdup(arg); | |
251 | while ((token = strsep(&p, ",")) != NULL) { | |
252 | if (envlist_setenv(envlist, token) != 0) { | |
4d1275c2 | 253 | usage(EXIT_FAILURE); |
fc9c5412 JS |
254 | } |
255 | } | |
256 | free(r); | |
257 | } | |
258 | ||
259 | static void handle_arg_unset_env(const char *arg) | |
260 | { | |
261 | char *r, *p, *token; | |
262 | r = p = strdup(arg); | |
263 | while ((token = strsep(&p, ",")) != NULL) { | |
264 | if (envlist_unsetenv(envlist, token) != 0) { | |
4d1275c2 | 265 | usage(EXIT_FAILURE); |
fc9c5412 JS |
266 | } |
267 | } | |
268 | free(r); | |
269 | } | |
270 | ||
271 | static void handle_arg_argv0(const char *arg) | |
272 | { | |
273 | argv0 = strdup(arg); | |
274 | } | |
275 | ||
276 | static void handle_arg_stack_size(const char *arg) | |
277 | { | |
278 | char *p; | |
279 | guest_stack_size = strtoul(arg, &p, 0); | |
280 | if (guest_stack_size == 0) { | |
4d1275c2 | 281 | usage(EXIT_FAILURE); |
fc9c5412 JS |
282 | } |
283 | ||
284 | if (*p == 'M') { | |
b52713c1 | 285 | guest_stack_size *= MiB; |
fc9c5412 | 286 | } else if (*p == 'k' || *p == 'K') { |
b52713c1 | 287 | guest_stack_size *= KiB; |
fc9c5412 JS |
288 | } |
289 | } | |
290 | ||
291 | static void handle_arg_ld_prefix(const char *arg) | |
292 | { | |
293 | interp_prefix = strdup(arg); | |
294 | } | |
295 | ||
296 | static void handle_arg_pagesize(const char *arg) | |
297 | { | |
298 | qemu_host_page_size = atoi(arg); | |
299 | if (qemu_host_page_size == 0 || | |
300 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
301 | fprintf(stderr, "page size must be a power of two\n"); | |
4d1275c2 | 302 | exit(EXIT_FAILURE); |
fc9c5412 JS |
303 | } |
304 | } | |
305 | ||
5ebdd774 | 306 | static void handle_arg_seed(const char *arg) |
c5e4a5a9 | 307 | { |
5ebdd774 | 308 | seed_optarg = arg; |
c5e4a5a9 MR |
309 | } |
310 | ||
fc9c5412 JS |
311 | static void handle_arg_gdb(const char *arg) |
312 | { | |
313 | gdbstub_port = atoi(arg); | |
314 | } | |
315 | ||
316 | static void handle_arg_uname(const char *arg) | |
317 | { | |
318 | qemu_uname_release = strdup(arg); | |
319 | } | |
320 | ||
321 | static void handle_arg_cpu(const char *arg) | |
322 | { | |
323 | cpu_model = strdup(arg); | |
c8057f95 | 324 | if (cpu_model == NULL || is_help_option(cpu_model)) { |
fc9c5412 | 325 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
e916cbf8 | 326 | #if defined(cpu_list) |
0442428a | 327 | cpu_list(); |
fc9c5412 | 328 | #endif |
4d1275c2 | 329 | exit(EXIT_FAILURE); |
fc9c5412 JS |
330 | } |
331 | } | |
332 | ||
fc9c5412 JS |
333 | static void handle_arg_guest_base(const char *arg) |
334 | { | |
335 | guest_base = strtol(arg, NULL, 0); | |
336 | have_guest_base = 1; | |
337 | } | |
338 | ||
339 | static void handle_arg_reserved_va(const char *arg) | |
340 | { | |
341 | char *p; | |
342 | int shift = 0; | |
343 | reserved_va = strtoul(arg, &p, 0); | |
344 | switch (*p) { | |
345 | case 'k': | |
346 | case 'K': | |
347 | shift = 10; | |
348 | break; | |
349 | case 'M': | |
350 | shift = 20; | |
351 | break; | |
352 | case 'G': | |
353 | shift = 30; | |
354 | break; | |
355 | } | |
356 | if (shift) { | |
357 | unsigned long unshifted = reserved_va; | |
358 | p++; | |
359 | reserved_va <<= shift; | |
18e80c55 RH |
360 | if (reserved_va >> shift != unshifted |
361 | || (MAX_RESERVED_VA && reserved_va > MAX_RESERVED_VA)) { | |
fc9c5412 | 362 | fprintf(stderr, "Reserved virtual address too big\n"); |
4d1275c2 | 363 | exit(EXIT_FAILURE); |
fc9c5412 JS |
364 | } |
365 | } | |
366 | if (*p) { | |
367 | fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p); | |
4d1275c2 | 368 | exit(EXIT_FAILURE); |
fc9c5412 JS |
369 | } |
370 | } | |
fc9c5412 JS |
371 | |
372 | static void handle_arg_singlestep(const char *arg) | |
373 | { | |
374 | singlestep = 1; | |
375 | } | |
376 | ||
377 | static void handle_arg_strace(const char *arg) | |
378 | { | |
379 | do_strace = 1; | |
380 | } | |
381 | ||
382 | static void handle_arg_version(const char *arg) | |
383 | { | |
7e563bfb | 384 | printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
0781dd6e | 385 | "\n" QEMU_COPYRIGHT "\n"); |
4d1275c2 | 386 | exit(EXIT_SUCCESS); |
fc9c5412 JS |
387 | } |
388 | ||
6533dd6e LV |
389 | static char *trace_file; |
390 | static void handle_arg_trace(const char *arg) | |
391 | { | |
392 | g_free(trace_file); | |
393 | trace_file = trace_opt_parse(arg); | |
394 | } | |
395 | ||
fc9c5412 JS |
396 | struct qemu_argument { |
397 | const char *argv; | |
398 | const char *env; | |
399 | bool has_arg; | |
400 | void (*handle_opt)(const char *arg); | |
401 | const char *example; | |
402 | const char *help; | |
403 | }; | |
404 | ||
42644cee | 405 | static const struct qemu_argument arg_table[] = { |
fc9c5412 JS |
406 | {"h", "", false, handle_arg_help, |
407 | "", "print this help"}, | |
daaf8c8e MI |
408 | {"help", "", false, handle_arg_help, |
409 | "", ""}, | |
fc9c5412 JS |
410 | {"g", "QEMU_GDB", true, handle_arg_gdb, |
411 | "port", "wait gdb connection to 'port'"}, | |
412 | {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix, | |
413 | "path", "set the elf interpreter prefix to 'path'"}, | |
414 | {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size, | |
415 | "size", "set the stack size to 'size' bytes"}, | |
416 | {"cpu", "QEMU_CPU", true, handle_arg_cpu, | |
c8057f95 | 417 | "model", "select CPU (-cpu help for list)"}, |
fc9c5412 JS |
418 | {"E", "QEMU_SET_ENV", true, handle_arg_set_env, |
419 | "var=value", "sets targets environment variable (see below)"}, | |
420 | {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env, | |
421 | "var", "unsets targets environment variable (see below)"}, | |
422 | {"0", "QEMU_ARGV0", true, handle_arg_argv0, | |
423 | "argv0", "forces target process argv[0] to be 'argv0'"}, | |
424 | {"r", "QEMU_UNAME", true, handle_arg_uname, | |
425 | "uname", "set qemu uname release string to 'uname'"}, | |
fc9c5412 JS |
426 | {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base, |
427 | "address", "set guest_base address to 'address'"}, | |
428 | {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va, | |
429 | "size", "reserve 'size' bytes for guest virtual address space"}, | |
fc9c5412 | 430 | {"d", "QEMU_LOG", true, handle_arg_log, |
989b697d PM |
431 | "item[,...]", "enable logging of specified items " |
432 | "(use '-d help' for a list of items)"}, | |
8423fa90 AB |
433 | {"dfilter", "QEMU_DFILTER", true, handle_arg_dfilter, |
434 | "range[,...]","filter logging based on address range"}, | |
50171d42 | 435 | {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename, |
989b697d | 436 | "logfile", "write logs to 'logfile' (default stderr)"}, |
fc9c5412 JS |
437 | {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize, |
438 | "pagesize", "set the host page size to 'pagesize'"}, | |
439 | {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep, | |
440 | "", "run in singlestep mode"}, | |
441 | {"strace", "QEMU_STRACE", false, handle_arg_strace, | |
442 | "", "log system calls"}, | |
5ebdd774 | 443 | {"seed", "QEMU_RAND_SEED", true, handle_arg_seed, |
c5e4a5a9 | 444 | "", "Seed for pseudo-random number generator"}, |
6533dd6e LV |
445 | {"trace", "QEMU_TRACE", true, handle_arg_trace, |
446 | "", "[[enable=]<pattern>][,events=<file>][,file=<file>]"}, | |
fc9c5412 | 447 | {"version", "QEMU_VERSION", false, handle_arg_version, |
1386d4c0 | 448 | "", "display version information and exit"}, |
fc9c5412 JS |
449 | {NULL, NULL, false, NULL, NULL, NULL} |
450 | }; | |
451 | ||
d03f9c32 | 452 | static void usage(int exitcode) |
fc9c5412 | 453 | { |
42644cee | 454 | const struct qemu_argument *arginfo; |
fc9c5412 JS |
455 | int maxarglen; |
456 | int maxenvlen; | |
457 | ||
2e59915d PB |
458 | printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
459 | "Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n" | |
fc9c5412 JS |
460 | "\n" |
461 | "Options and associated environment variables:\n" | |
462 | "\n"); | |
463 | ||
63ec54d7 PM |
464 | /* Calculate column widths. We must always have at least enough space |
465 | * for the column header. | |
466 | */ | |
467 | maxarglen = strlen("Argument"); | |
468 | maxenvlen = strlen("Env-variable"); | |
fc9c5412 JS |
469 | |
470 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
63ec54d7 PM |
471 | int arglen = strlen(arginfo->argv); |
472 | if (arginfo->has_arg) { | |
473 | arglen += strlen(arginfo->example) + 1; | |
474 | } | |
fc9c5412 JS |
475 | if (strlen(arginfo->env) > maxenvlen) { |
476 | maxenvlen = strlen(arginfo->env); | |
477 | } | |
63ec54d7 PM |
478 | if (arglen > maxarglen) { |
479 | maxarglen = arglen; | |
fc9c5412 JS |
480 | } |
481 | } | |
482 | ||
63ec54d7 PM |
483 | printf("%-*s %-*s Description\n", maxarglen+1, "Argument", |
484 | maxenvlen, "Env-variable"); | |
fc9c5412 JS |
485 | |
486 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
487 | if (arginfo->has_arg) { | |
488 | printf("-%s %-*s %-*s %s\n", arginfo->argv, | |
63ec54d7 PM |
489 | (int)(maxarglen - strlen(arginfo->argv) - 1), |
490 | arginfo->example, maxenvlen, arginfo->env, arginfo->help); | |
fc9c5412 | 491 | } else { |
63ec54d7 | 492 | printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv, |
fc9c5412 JS |
493 | maxenvlen, arginfo->env, |
494 | arginfo->help); | |
495 | } | |
496 | } | |
497 | ||
498 | printf("\n" | |
499 | "Defaults:\n" | |
500 | "QEMU_LD_PREFIX = %s\n" | |
989b697d | 501 | "QEMU_STACK_SIZE = %ld byte\n", |
fc9c5412 | 502 | interp_prefix, |
989b697d | 503 | guest_stack_size); |
fc9c5412 JS |
504 | |
505 | printf("\n" | |
506 | "You can use -E and -U options or the QEMU_SET_ENV and\n" | |
507 | "QEMU_UNSET_ENV environment variables to set and unset\n" | |
508 | "environment variables for the target process.\n" | |
509 | "It is possible to provide several variables by separating them\n" | |
510 | "by commas in getsubopt(3) style. Additionally it is possible to\n" | |
511 | "provide the -E and -U options multiple times.\n" | |
512 | "The following lines are equivalent:\n" | |
513 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
514 | " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n" | |
515 | " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n" | |
516 | "Note that if you provide several changes to a single variable\n" | |
f5048cb7 EB |
517 | "the last change will stay in effect.\n" |
518 | "\n" | |
519 | QEMU_HELP_BOTTOM "\n"); | |
fc9c5412 | 520 | |
d03f9c32 | 521 | exit(exitcode); |
fc9c5412 JS |
522 | } |
523 | ||
524 | static int parse_args(int argc, char **argv) | |
525 | { | |
526 | const char *r; | |
527 | int optind; | |
42644cee | 528 | const struct qemu_argument *arginfo; |
fc9c5412 JS |
529 | |
530 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
531 | if (arginfo->env == NULL) { | |
532 | continue; | |
533 | } | |
534 | ||
535 | r = getenv(arginfo->env); | |
536 | if (r != NULL) { | |
537 | arginfo->handle_opt(r); | |
538 | } | |
539 | } | |
540 | ||
541 | optind = 1; | |
542 | for (;;) { | |
543 | if (optind >= argc) { | |
544 | break; | |
545 | } | |
546 | r = argv[optind]; | |
547 | if (r[0] != '-') { | |
548 | break; | |
549 | } | |
550 | optind++; | |
551 | r++; | |
552 | if (!strcmp(r, "-")) { | |
553 | break; | |
554 | } | |
ba02577c MI |
555 | /* Treat --foo the same as -foo. */ |
556 | if (r[0] == '-') { | |
557 | r++; | |
558 | } | |
fc9c5412 JS |
559 | |
560 | for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { | |
561 | if (!strcmp(r, arginfo->argv)) { | |
fc9c5412 | 562 | if (arginfo->has_arg) { |
1386d4c0 | 563 | if (optind >= argc) { |
138940bf MI |
564 | (void) fprintf(stderr, |
565 | "qemu: missing argument for option '%s'\n", r); | |
4d1275c2 | 566 | exit(EXIT_FAILURE); |
1386d4c0 PM |
567 | } |
568 | arginfo->handle_opt(argv[optind]); | |
fc9c5412 | 569 | optind++; |
1386d4c0 PM |
570 | } else { |
571 | arginfo->handle_opt(NULL); | |
fc9c5412 | 572 | } |
fc9c5412 JS |
573 | break; |
574 | } | |
575 | } | |
576 | ||
577 | /* no option matched the current argv */ | |
578 | if (arginfo->handle_opt == NULL) { | |
138940bf | 579 | (void) fprintf(stderr, "qemu: unknown option '%s'\n", r); |
4d1275c2 | 580 | exit(EXIT_FAILURE); |
fc9c5412 JS |
581 | } |
582 | } | |
583 | ||
584 | if (optind >= argc) { | |
138940bf | 585 | (void) fprintf(stderr, "qemu: no user program specified\n"); |
4d1275c2 | 586 | exit(EXIT_FAILURE); |
fc9c5412 JS |
587 | } |
588 | ||
589 | filename = argv[optind]; | |
590 | exec_path = argv[optind]; | |
591 | ||
592 | return optind; | |
593 | } | |
594 | ||
902b3d5c | 595 | int main(int argc, char **argv, char **envp) |
31e31b8a | 596 | { |
01ffc75b | 597 | struct target_pt_regs regs1, *regs = ®s1; |
31e31b8a | 598 | struct image_info info1, *info = &info1; |
edf8e2af | 599 | struct linux_binprm bprm; |
48e15fc2 | 600 | TaskState *ts; |
9349b4f9 | 601 | CPUArchState *env; |
db6b81d4 | 602 | CPUState *cpu; |
586314f2 | 603 | int optind; |
04a6dfeb | 604 | char **target_environ, **wrk; |
7d8cec95 AJ |
605 | char **target_argv; |
606 | int target_argc; | |
7d8cec95 | 607 | int i; |
fd4d81dd | 608 | int ret; |
03cfd8fa | 609 | int execfd; |
b12b6a18 | 610 | |
f5852efa | 611 | error_init(argv[0]); |
fe4db84d | 612 | module_call_init(MODULE_INIT_TRACE); |
267f685b | 613 | qemu_init_cpu_list(); |
ce008c1f AF |
614 | module_call_init(MODULE_INIT_QOM); |
615 | ||
ec45bbe5 | 616 | envlist = envlist_create(); |
04a6dfeb AJ |
617 | |
618 | /* add current environment into the list */ | |
619 | for (wrk = environ; *wrk != NULL; wrk++) { | |
620 | (void) envlist_setenv(envlist, *wrk); | |
621 | } | |
622 | ||
703e0e89 RH |
623 | /* Read the stack limit from the kernel. If it's "unlimited", |
624 | then we can do little else besides use the default. */ | |
625 | { | |
626 | struct rlimit lim; | |
627 | if (getrlimit(RLIMIT_STACK, &lim) == 0 | |
81bbe906 TY |
628 | && lim.rlim_cur != RLIM_INFINITY |
629 | && lim.rlim_cur == (target_long)lim.rlim_cur) { | |
703e0e89 RH |
630 | guest_stack_size = lim.rlim_cur; |
631 | } | |
632 | } | |
633 | ||
b1f9be31 | 634 | cpu_model = NULL; |
b5ec5ce0 | 635 | |
6533dd6e LV |
636 | qemu_add_opts(&qemu_trace_opts); |
637 | ||
fc9c5412 | 638 | optind = parse_args(argc, argv); |
586314f2 | 639 | |
6533dd6e LV |
640 | if (!trace_init_backends()) { |
641 | exit(1); | |
642 | } | |
643 | trace_init_file(trace_file); | |
644 | ||
31e31b8a | 645 | /* Zero out regs */ |
01ffc75b | 646 | memset(regs, 0, sizeof(struct target_pt_regs)); |
31e31b8a FB |
647 | |
648 | /* Zero out image_info */ | |
649 | memset(info, 0, sizeof(struct image_info)); | |
650 | ||
edf8e2af MW |
651 | memset(&bprm, 0, sizeof (bprm)); |
652 | ||
74cd30b8 FB |
653 | /* Scan interp_prefix dir for replacement files. */ |
654 | init_paths(interp_prefix); | |
655 | ||
4a24a758 PM |
656 | init_qemu_uname_release(); |
657 | ||
768fe76e YS |
658 | execfd = qemu_getauxval(AT_EXECFD); |
659 | if (execfd == 0) { | |
660 | execfd = open(filename, O_RDONLY); | |
661 | if (execfd < 0) { | |
662 | printf("Error while loading %s: %s\n", filename, strerror(errno)); | |
663 | _exit(EXIT_FAILURE); | |
664 | } | |
665 | } | |
666 | ||
46027c07 | 667 | if (cpu_model == NULL) { |
768fe76e | 668 | cpu_model = cpu_get_model(get_elf_eflags(execfd)); |
aaed909a | 669 | } |
c1c8cfe5 | 670 | cpu_type = parse_cpu_option(cpu_model); |
2278b939 | 671 | |
2b5249b8 | 672 | /* init tcg before creating CPUs and to get qemu_host_page_size */ |
d5ab9713 | 673 | tcg_exec_init(0); |
2278b939 | 674 | |
dc18baae LV |
675 | /* Reserving *too* much vm space via mmap can run into problems |
676 | with rlimits, oom due to page table creation, etc. We will still try it, | |
677 | if directed by the command-line option, but not by default. */ | |
678 | if (HOST_LONG_BITS == 64 && | |
679 | TARGET_VIRT_ADDR_SPACE_BITS <= 32 && | |
680 | reserved_va == 0) { | |
681 | /* reserved_va must be aligned with the host page size | |
682 | * as it is used with mmap() | |
683 | */ | |
684 | reserved_va = MAX_RESERVED_VA & qemu_host_page_mask; | |
685 | } | |
686 | ||
2278b939 | 687 | cpu = cpu_create(cpu_type); |
2994fd96 | 688 | env = cpu->env_ptr; |
0ac46af3 | 689 | cpu_reset(cpu); |
b55a37c9 | 690 | |
db6b81d4 | 691 | thread_cpu = cpu; |
3b46e624 | 692 | |
b6741956 FB |
693 | if (getenv("QEMU_STRACE")) { |
694 | do_strace = 1; | |
b92c47c1 TS |
695 | } |
696 | ||
5ebdd774 RH |
697 | if (seed_optarg == NULL) { |
698 | seed_optarg = getenv("QEMU_RAND_SEED"); | |
699 | } | |
a573e9ba RH |
700 | { |
701 | Error *err = NULL; | |
702 | if (seed_optarg != NULL) { | |
a573e9ba RH |
703 | qemu_guest_random_seed_main(seed_optarg, &err); |
704 | } else { | |
705 | qcrypto_init(&err); | |
706 | } | |
707 | if (err) { | |
708 | error_reportf_err(err, "cannot initialize crypto: "); | |
709 | exit(1); | |
5ebdd774 | 710 | } |
c5e4a5a9 MR |
711 | } |
712 | ||
04a6dfeb AJ |
713 | target_environ = envlist_to_environ(envlist, NULL); |
714 | envlist_free(envlist); | |
b12b6a18 | 715 | |
379f6698 | 716 | /* |
2b5249b8 | 717 | * Now that page sizes are configured in tcg_exec_init() we can do |
379f6698 PB |
718 | * proper page alignment for guest_base. |
719 | */ | |
720 | guest_base = HOST_PAGE_ALIGN(guest_base); | |
68a1c816 | 721 | |
806d1021 MI |
722 | if (reserved_va || have_guest_base) { |
723 | guest_base = init_guest_space(guest_base, reserved_va, 0, | |
724 | have_guest_base); | |
725 | if (guest_base == (unsigned long)-1) { | |
097b8cb8 PM |
726 | fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address " |
727 | "space for use as guest address space (check your virtual " | |
728 | "memory ulimit setting or reserve less using -R option)\n", | |
729 | reserved_va); | |
4d1275c2 | 730 | exit(EXIT_FAILURE); |
68a1c816 | 731 | } |
97cc7560 | 732 | |
806d1021 MI |
733 | if (reserved_va) { |
734 | mmap_next_start = reserved_va; | |
97cc7560 DDAG |
735 | } |
736 | } | |
379f6698 PB |
737 | |
738 | /* | |
739 | * Read in mmap_min_addr kernel parameter. This value is used | |
740 | * When loading the ELF image to determine whether guest_base | |
14f24e14 | 741 | * is needed. It is also used in mmap_find_vma. |
379f6698 | 742 | */ |
14f24e14 | 743 | { |
379f6698 PB |
744 | FILE *fp; |
745 | ||
746 | if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { | |
747 | unsigned long tmp; | |
748 | if (fscanf(fp, "%lu", &tmp) == 1) { | |
749 | mmap_min_addr = tmp; | |
13829020 | 750 | qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr); |
379f6698 PB |
751 | } |
752 | fclose(fp); | |
753 | } | |
754 | } | |
379f6698 | 755 | |
7d8cec95 AJ |
756 | /* |
757 | * Prepare copy of argv vector for target. | |
758 | */ | |
759 | target_argc = argc - optind; | |
760 | target_argv = calloc(target_argc + 1, sizeof (char *)); | |
761 | if (target_argv == NULL) { | |
7d37435b PB |
762 | (void) fprintf(stderr, "Unable to allocate memory for target_argv\n"); |
763 | exit(EXIT_FAILURE); | |
7d8cec95 AJ |
764 | } |
765 | ||
766 | /* | |
767 | * If argv0 is specified (using '-0' switch) we replace | |
768 | * argv[0] pointer with the given one. | |
769 | */ | |
770 | i = 0; | |
771 | if (argv0 != NULL) { | |
772 | target_argv[i++] = strdup(argv0); | |
773 | } | |
774 | for (; i < target_argc; i++) { | |
775 | target_argv[i] = strdup(argv[optind + i]); | |
776 | } | |
777 | target_argv[target_argc] = NULL; | |
778 | ||
c78d65e8 | 779 | ts = g_new0(TaskState, 1); |
edf8e2af MW |
780 | init_task_state(ts); |
781 | /* build Task State */ | |
782 | ts->info = info; | |
783 | ts->bprm = &bprm; | |
0429a971 | 784 | cpu->opaque = ts; |
edf8e2af MW |
785 | task_settid(ts); |
786 | ||
03cfd8fa | 787 | ret = loader_exec(execfd, filename, target_argv, target_environ, regs, |
fd4d81dd AP |
788 | info, &bprm); |
789 | if (ret != 0) { | |
885c1d10 | 790 | printf("Error while loading %s: %s\n", filename, strerror(-ret)); |
4d1275c2 | 791 | _exit(EXIT_FAILURE); |
b12b6a18 TS |
792 | } |
793 | ||
794 | for (wrk = target_environ; *wrk; wrk++) { | |
ec45bbe5 | 795 | g_free(*wrk); |
31e31b8a | 796 | } |
3b46e624 | 797 | |
ec45bbe5 | 798 | g_free(target_environ); |
b12b6a18 | 799 | |
13829020 | 800 | if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
379f6698 | 801 | qemu_log("guest_base 0x%lx\n", guest_base); |
2e77eac6 BS |
802 | log_page_dump(); |
803 | ||
804 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
805 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
7c4ee5bc RH |
806 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", info->start_code); |
807 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", info->start_data); | |
2e77eac6 | 808 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
7c4ee5bc | 809 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", info->start_stack); |
2e77eac6 BS |
810 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
811 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
7c4ee5bc RH |
812 | qemu_log("argv_start 0x" TARGET_ABI_FMT_lx "\n", info->arg_start); |
813 | qemu_log("env_start 0x" TARGET_ABI_FMT_lx "\n", | |
814 | info->arg_end + (abi_ulong)sizeof(abi_ulong)); | |
815 | qemu_log("auxv_start 0x" TARGET_ABI_FMT_lx "\n", info->saved_auxv); | |
2e77eac6 | 816 | } |
31e31b8a | 817 | |
53a5960a | 818 | target_set_brk(info->brk); |
31e31b8a | 819 | syscall_init(); |
66fb9763 | 820 | signal_init(); |
31e31b8a | 821 | |
9002ec79 RH |
822 | /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay |
823 | generating the prologue until now so that the prologue can take | |
824 | the real value of GUEST_BASE into account. */ | |
b1311c4a | 825 | tcg_prologue_init(tcg_ctx); |
e8feb96f | 826 | tcg_region_init(); |
9002ec79 | 827 | |
cd71c089 LV |
828 | target_cpu_copy_regs(env, regs); |
829 | ||
74c33bed | 830 | if (gdbstub_port) { |
ff7a981a PM |
831 | if (gdbserver_start(gdbstub_port) < 0) { |
832 | fprintf(stderr, "qemu: could not open gdbserver on port %d\n", | |
833 | gdbstub_port); | |
4d1275c2 | 834 | exit(EXIT_FAILURE); |
ff7a981a | 835 | } |
db6b81d4 | 836 | gdb_handlesig(cpu, 0); |
1fddef4b | 837 | } |
1b6b029e FB |
838 | cpu_loop(env); |
839 | /* never exits */ | |
31e31b8a FB |
840 | return 0; |
841 | } |