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Commit | Line | Data |
---|---|---|
84778508 | 1 | /* |
4c0a4fe6 | 2 | * qemu bsd user main |
84778508 BS |
3 | * |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
4c0a4fe6 | 5 | * Copyright (c) 2013-14 Stacey Son |
84778508 BS |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
8167ee88 | 18 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
84778508 | 19 | */ |
14a48c1d | 20 | |
312a0b1c WL |
21 | #include <sys/types.h> |
22 | #include <sys/time.h> | |
23 | #include <sys/resource.h> | |
24 | #include <sys/sysctl.h> | |
25 | ||
2231197c | 26 | #include "qemu/osdep.h" |
a8d25326 | 27 | #include "qemu-common.h" |
66d26ddb | 28 | #include "qemu/units.h" |
940e43aa | 29 | #include "qemu/accel.h" |
14a48c1d | 30 | #include "sysemu/tcg.h" |
8c1c230a | 31 | #include "qemu-version.h" |
84778508 BS |
32 | #include <machine/trap.h> |
33 | ||
daa76aa4 | 34 | #include "qapi/error.h" |
84778508 | 35 | #include "qemu.h" |
6913e79c | 36 | #include "qemu/config-file.h" |
f5852efa | 37 | #include "qemu/error-report.h" |
f348b6d1 VB |
38 | #include "qemu/path.h" |
39 | #include "qemu/help_option.h" | |
0b8fa32f | 40 | #include "qemu/module.h" |
63c91552 | 41 | #include "exec/exec-all.h" |
dcb32f1d | 42 | #include "tcg/tcg.h" |
1de7afc9 PB |
43 | #include "qemu/timer.h" |
44 | #include "qemu/envlist.h" | |
29aabb4f | 45 | #include "qemu/cutils.h" |
508127e2 | 46 | #include "exec/log.h" |
6913e79c | 47 | #include "trace/control.h" |
03ecf078 WL |
48 | #include "crypto/init.h" |
49 | #include "qemu/guest-random.h" | |
fc0d96b4 | 50 | |
d1dc9ab3 | 51 | #include "host-os.h" |
031fe7af | 52 | #include "target_arch_cpu.h" |
d1dc9ab3 | 53 | |
1b530a6d | 54 | int singlestep; |
2fa5d9ba | 55 | unsigned long mmap_min_addr; |
5ca870b9 | 56 | uintptr_t guest_base; |
e307c192 | 57 | bool have_guest_base; |
d6ef40bf | 58 | unsigned long reserved_va; |
1b530a6d | 59 | |
7ee2822c | 60 | static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
fccae322 | 61 | const char *qemu_uname_release; |
78cfb07f | 62 | enum BSDType bsd_type; |
01a298a5 | 63 | char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */ |
84778508 | 64 | |
312a0b1c WL |
65 | unsigned long target_maxtsiz = TARGET_MAXTSIZ; /* max text size */ |
66 | unsigned long target_dfldsiz = TARGET_DFLDSIZ; /* initial data size limit */ | |
67 | unsigned long target_maxdsiz = TARGET_MAXDSIZ; /* max data size */ | |
68 | unsigned long target_dflssiz = TARGET_DFLSSIZ; /* initial data size limit */ | |
69 | unsigned long target_maxssiz = TARGET_MAXSSIZ; /* max stack size */ | |
70 | unsigned long target_sgrowsiz = TARGET_SGROWSIZ; /* amount to grow stack */ | |
84778508 BS |
71 | |
72 | void gemu_log(const char *fmt, ...) | |
73 | { | |
74 | va_list ap; | |
75 | ||
76 | va_start(ap, fmt); | |
77 | vfprintf(stderr, fmt, ap); | |
78 | va_end(ap); | |
79 | } | |
9399f095 | 80 | |
9399f095 BS |
81 | void fork_start(void) |
82 | { | |
83 | } | |
84 | ||
85 | void fork_end(int child) | |
86 | { | |
87 | if (child) { | |
f7ec7f7b | 88 | gdbserver_fork(thread_cpu); |
9399f095 BS |
89 | } |
90 | } | |
91 | ||
031fe7af | 92 | void cpu_loop(CPUArchState *env) |
31fc12df | 93 | { |
031fe7af | 94 | target_cpu_loop(env); |
31fc12df BS |
95 | } |
96 | ||
84778508 BS |
97 | static void usage(void) |
98 | { | |
7e563bfb | 99 | printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
0781dd6e | 100 | "\n" QEMU_COPYRIGHT "\n" |
2e59915d | 101 | "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
84778508 BS |
102 | "BSD CPU emulator (compiled for %s emulation)\n" |
103 | "\n" | |
104 | "Standard options:\n" | |
105 | "-h print this help\n" | |
106 | "-g port wait gdb connection to port\n" | |
107 | "-L path set the elf interpreter prefix (default=%s)\n" | |
108 | "-s size set the stack size in bytes (default=%ld)\n" | |
c8057f95 | 109 | "-cpu model select CPU (-cpu help for list)\n" |
84778508 | 110 | "-drop-ld-preload drop LD_PRELOAD for target process\n" |
fc0d96b4 BS |
111 | "-E var=value sets/modifies targets environment variable(s)\n" |
112 | "-U var unsets targets environment variable(s)\n" | |
2fa5d9ba | 113 | "-B address set guest_base address to address\n" |
84778508 BS |
114 | "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" |
115 | "\n" | |
116 | "Debug options:\n" | |
989b697d PM |
117 | "-d item1[,...] enable logging of specified items\n" |
118 | " (use '-d help' for a list of log items)\n" | |
119 | "-D logfile write logs to 'logfile' (default stderr)\n" | |
989b697d PM |
120 | "-singlestep always run in singlestep mode\n" |
121 | "-strace log system calls\n" | |
6913e79c LV |
122 | "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
123 | " specify tracing options\n" | |
84778508 BS |
124 | "\n" |
125 | "Environment variables:\n" | |
126 | "QEMU_STRACE Print system calls and arguments similar to the\n" | |
127 | " 'strace' program. Enable by setting to any value.\n" | |
fc0d96b4 BS |
128 | "You can use -E and -U options to set/unset environment variables\n" |
129 | "for target process. It is possible to provide several variables\n" | |
130 | "by repeating the option. For example:\n" | |
131 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
132 | "Note that if you provide several changes to single variable\n" | |
133 | "last change will stay in effect.\n" | |
f5048cb7 EB |
134 | "\n" |
135 | QEMU_HELP_BOTTOM "\n" | |
84778508 | 136 | , |
2e59915d | 137 | TARGET_NAME, |
84778508 | 138 | interp_prefix, |
312a0b1c | 139 | target_dflssiz); |
2d18e637 | 140 | exit(1); |
84778508 BS |
141 | } |
142 | ||
d42df502 | 143 | __thread CPUState *thread_cpu; |
84778508 | 144 | |
48f59211 EM |
145 | bool qemu_cpu_is_self(CPUState *cpu) |
146 | { | |
147 | return thread_cpu == cpu; | |
148 | } | |
149 | ||
150 | void qemu_cpu_kick(CPUState *cpu) | |
151 | { | |
152 | cpu_exit(cpu); | |
153 | } | |
154 | ||
84778508 BS |
155 | /* Assumes contents are already zeroed. */ |
156 | void init_task_state(TaskState *ts) | |
157 | { | |
158 | int i; | |
159 | ||
160 | ts->used = 1; | |
161 | ts->first_free = ts->sigqueue_table; | |
162 | for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { | |
163 | ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; | |
164 | } | |
165 | ts->sigqueue_table[i].next = NULL; | |
166 | } | |
167 | ||
312a0b1c WL |
168 | static void |
169 | adjust_ssize(void) | |
170 | { | |
171 | struct rlimit rl; | |
172 | ||
173 | if (getrlimit(RLIMIT_STACK, &rl) != 0) { | |
174 | return; | |
175 | } | |
176 | ||
177 | target_maxssiz = MIN(target_maxssiz, rl.rlim_max); | |
178 | target_dflssiz = MIN(MAX(target_dflssiz, rl.rlim_cur), target_maxssiz); | |
179 | ||
180 | rl.rlim_max = target_maxssiz; | |
181 | rl.rlim_cur = target_dflssiz; | |
182 | setrlimit(RLIMIT_STACK, &rl); | |
183 | } | |
184 | ||
01a298a5 WL |
185 | static void save_proc_pathname(char *argv0) |
186 | { | |
187 | int mib[4]; | |
188 | size_t len; | |
189 | ||
190 | mib[0] = CTL_KERN; | |
191 | mib[1] = KERN_PROC; | |
192 | mib[2] = KERN_PROC_PATHNAME; | |
193 | mib[3] = -1; | |
194 | ||
195 | len = sizeof(qemu_proc_pathname); | |
196 | if (sysctl(mib, 4, qemu_proc_pathname, &len, NULL, 0)) { | |
197 | perror("sysctl"); | |
198 | } | |
199 | } | |
200 | ||
84778508 BS |
201 | int main(int argc, char **argv) |
202 | { | |
203 | const char *filename; | |
204 | const char *cpu_model; | |
2278b939 | 205 | const char *cpu_type; |
989b697d | 206 | const char *log_file = NULL; |
c235d738 | 207 | const char *log_mask = NULL; |
03ecf078 | 208 | const char *seed_optarg = NULL; |
84778508 BS |
209 | struct target_pt_regs regs1, *regs = ®s1; |
210 | struct image_info info1, *info = &info1; | |
d37853f9 | 211 | struct bsd_binprm bprm; |
031fe7af | 212 | TaskState *ts; |
9349b4f9 | 213 | CPUArchState *env; |
db6b81d4 | 214 | CPUState *cpu; |
29aabb4f | 215 | int optind, rv; |
84778508 | 216 | const char *r; |
fcedd920 | 217 | const char *gdbstub = NULL; |
fc0d96b4 BS |
218 | char **target_environ, **wrk; |
219 | envlist_t *envlist = NULL; | |
d1dc9ab3 | 220 | bsd_type = HOST_DEFAULT_BSD_TYPE; |
84778508 | 221 | |
312a0b1c WL |
222 | adjust_ssize(); |
223 | ||
b23a51dc | 224 | if (argc <= 1) { |
84778508 | 225 | usage(); |
b23a51dc | 226 | } |
84778508 | 227 | |
01a298a5 WL |
228 | save_proc_pathname(argv[0]); |
229 | ||
f5852efa | 230 | error_init(argv[0]); |
fe4db84d | 231 | module_call_init(MODULE_INIT_TRACE); |
267f685b | 232 | qemu_init_cpu_list(); |
ce008c1f AF |
233 | module_call_init(MODULE_INIT_QOM); |
234 | ||
ec45bbe5 | 235 | envlist = envlist_create(); |
fc0d96b4 BS |
236 | |
237 | /* add current environment into the list */ | |
238 | for (wrk = environ; *wrk != NULL; wrk++) { | |
239 | (void) envlist_setenv(envlist, *wrk); | |
240 | } | |
241 | ||
84778508 | 242 | cpu_model = NULL; |
0c62de2f | 243 | |
6913e79c LV |
244 | qemu_add_opts(&qemu_trace_opts); |
245 | ||
84778508 | 246 | optind = 1; |
6913e79c | 247 | for (;;) { |
b23a51dc | 248 | if (optind >= argc) { |
84778508 | 249 | break; |
b23a51dc | 250 | } |
84778508 | 251 | r = argv[optind]; |
b23a51dc | 252 | if (r[0] != '-') { |
84778508 | 253 | break; |
b23a51dc | 254 | } |
84778508 BS |
255 | optind++; |
256 | r++; | |
257 | if (!strcmp(r, "-")) { | |
258 | break; | |
259 | } else if (!strcmp(r, "d")) { | |
c235d738 | 260 | if (optind >= argc) { |
84778508 | 261 | break; |
84778508 | 262 | } |
c235d738 MF |
263 | log_mask = argv[optind++]; |
264 | } else if (!strcmp(r, "D")) { | |
265 | if (optind >= argc) { | |
266 | break; | |
267 | } | |
268 | log_file = argv[optind++]; | |
fc0d96b4 BS |
269 | } else if (!strcmp(r, "E")) { |
270 | r = argv[optind++]; | |
b23a51dc | 271 | if (envlist_setenv(envlist, r) != 0) { |
fc0d96b4 | 272 | usage(); |
b23a51dc | 273 | } |
f66724c9 SW |
274 | } else if (!strcmp(r, "ignore-environment")) { |
275 | envlist_free(envlist); | |
ec45bbe5 | 276 | envlist = envlist_create(); |
fc0d96b4 BS |
277 | } else if (!strcmp(r, "U")) { |
278 | r = argv[optind++]; | |
b23a51dc | 279 | if (envlist_unsetenv(envlist, r) != 0) { |
fc0d96b4 | 280 | usage(); |
b23a51dc | 281 | } |
84778508 BS |
282 | } else if (!strcmp(r, "s")) { |
283 | r = argv[optind++]; | |
312a0b1c WL |
284 | rv = qemu_strtoul(r, &r, 0, &target_dflssiz); |
285 | if (rv < 0 || target_dflssiz <= 0) { | |
84778508 | 286 | usage(); |
b23a51dc WL |
287 | } |
288 | if (*r == 'M') { | |
312a0b1c | 289 | target_dflssiz *= 1024 * 1024; |
b23a51dc | 290 | } else if (*r == 'k' || *r == 'K') { |
312a0b1c WL |
291 | target_dflssiz *= 1024; |
292 | } | |
293 | if (target_dflssiz > target_maxssiz) { | |
294 | usage(); | |
b23a51dc | 295 | } |
84778508 BS |
296 | } else if (!strcmp(r, "L")) { |
297 | interp_prefix = argv[optind++]; | |
298 | } else if (!strcmp(r, "p")) { | |
299 | qemu_host_page_size = atoi(argv[optind++]); | |
300 | if (qemu_host_page_size == 0 || | |
301 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
302 | fprintf(stderr, "page size must be a power of two\n"); | |
303 | exit(1); | |
304 | } | |
305 | } else if (!strcmp(r, "g")) { | |
fcedd920 | 306 | gdbstub = g_strdup(argv[optind++]); |
84778508 BS |
307 | } else if (!strcmp(r, "r")) { |
308 | qemu_uname_release = argv[optind++]; | |
309 | } else if (!strcmp(r, "cpu")) { | |
310 | cpu_model = argv[optind++]; | |
c8057f95 | 311 | if (is_help_option(cpu_model)) { |
d60c3b93 | 312 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
84778508 | 313 | #if defined(cpu_list) |
d60c3b93 | 314 | cpu_list(); |
84778508 | 315 | #endif |
2d18e637 | 316 | exit(1); |
84778508 | 317 | } |
2fa5d9ba | 318 | } else if (!strcmp(r, "B")) { |
29aabb4f WL |
319 | rv = qemu_strtoul(argv[optind++], NULL, 0, &guest_base); |
320 | if (rv < 0) { | |
321 | usage(); | |
322 | } | |
d60c3b93 | 323 | have_guest_base = true; |
84778508 | 324 | } else if (!strcmp(r, "drop-ld-preload")) { |
fc0d96b4 | 325 | (void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
84778508 BS |
326 | } else if (!strcmp(r, "bsd")) { |
327 | if (!strcasecmp(argv[optind], "freebsd")) { | |
328 | bsd_type = target_freebsd; | |
329 | } else if (!strcasecmp(argv[optind], "netbsd")) { | |
330 | bsd_type = target_netbsd; | |
331 | } else if (!strcasecmp(argv[optind], "openbsd")) { | |
332 | bsd_type = target_openbsd; | |
333 | } else { | |
334 | usage(); | |
335 | } | |
336 | optind++; | |
03ecf078 WL |
337 | } else if (!strcmp(r, "seed")) { |
338 | seed_optarg = optarg; | |
1b530a6d AJ |
339 | } else if (!strcmp(r, "singlestep")) { |
340 | singlestep = 1; | |
84778508 BS |
341 | } else if (!strcmp(r, "strace")) { |
342 | do_strace = 1; | |
6913e79c | 343 | } else if (!strcmp(r, "trace")) { |
92eecfff | 344 | trace_opt_parse(optarg); |
6913e79c | 345 | } else { |
84778508 BS |
346 | usage(); |
347 | } | |
348 | } | |
84778508 | 349 | |
c235d738 | 350 | /* init debug */ |
f2937a33 | 351 | qemu_log_needs_buffers(); |
daa76aa4 | 352 | qemu_set_log_filename(log_file, &error_fatal); |
c235d738 MF |
353 | if (log_mask) { |
354 | int mask; | |
c235d738 | 355 | |
4fde1eba | 356 | mask = qemu_str_to_log_mask(log_mask); |
c235d738 | 357 | if (!mask) { |
59a6fa6e | 358 | qemu_print_log_usage(stdout); |
c235d738 MF |
359 | exit(1); |
360 | } | |
24537a01 | 361 | qemu_set_log(mask); |
c235d738 MF |
362 | } |
363 | ||
4b5dfd82 PM |
364 | if (optind >= argc) { |
365 | usage(); | |
366 | } | |
367 | filename = argv[optind]; | |
368 | ||
6913e79c LV |
369 | if (!trace_init_backends()) { |
370 | exit(1); | |
371 | } | |
92eecfff | 372 | trace_init_file(); |
6913e79c | 373 | |
84778508 BS |
374 | /* Zero out regs */ |
375 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
376 | ||
d37853f9 WL |
377 | /* Zero bsd params */ |
378 | memset(&bprm, 0, sizeof(bprm)); | |
379 | ||
84778508 BS |
380 | /* Zero out image_info */ |
381 | memset(info, 0, sizeof(struct image_info)); | |
382 | ||
383 | /* Scan interp_prefix dir for replacement files. */ | |
384 | init_paths(interp_prefix); | |
385 | ||
386 | if (cpu_model == NULL) { | |
031fe7af | 387 | cpu_model = TARGET_DEFAULT_CPU_MODEL; |
84778508 | 388 | } |
2b5249b8 | 389 | |
b86f59c7 | 390 | cpu_type = parse_cpu_option(cpu_model); |
031fe7af | 391 | |
2b5249b8 | 392 | /* init tcg before creating CPUs and to get qemu_host_page_size */ |
940e43aa CF |
393 | { |
394 | AccelClass *ac = ACCEL_GET_CLASS(current_accel()); | |
2b5249b8 | 395 | |
b86f59c7 | 396 | accel_init_interfaces(ac); |
92242f34 | 397 | ac->init_machine(NULL); |
940e43aa | 398 | } |
2278b939 | 399 | cpu = cpu_create(cpu_type); |
2994fd96 | 400 | env = cpu->env_ptr; |
db6b81d4 | 401 | cpu_reset(cpu); |
db6b81d4 | 402 | thread_cpu = cpu; |
84778508 BS |
403 | |
404 | if (getenv("QEMU_STRACE")) { | |
405 | do_strace = 1; | |
406 | } | |
407 | ||
fc0d96b4 BS |
408 | target_environ = envlist_to_environ(envlist, NULL); |
409 | envlist_free(envlist); | |
410 | ||
03ecf078 WL |
411 | { |
412 | Error *err = NULL; | |
413 | if (seed_optarg != NULL) { | |
414 | qemu_guest_random_seed_main(seed_optarg, &err); | |
415 | } else { | |
416 | qcrypto_init(&err); | |
417 | } | |
418 | if (err) { | |
419 | error_reportf_err(err, "cannot initialize crypto: "); | |
420 | exit(1); | |
421 | } | |
422 | } | |
423 | ||
2fa5d9ba | 424 | /* |
fa79cde6 | 425 | * Now that page sizes are configured we can do |
2fa5d9ba BS |
426 | * proper page alignment for guest_base. |
427 | */ | |
428 | guest_base = HOST_PAGE_ALIGN(guest_base); | |
429 | ||
d37853f9 WL |
430 | if (loader_exec(filename, argv + optind, target_environ, regs, info, |
431 | &bprm) != 0) { | |
84778508 BS |
432 | printf("Error loading %s\n", filename); |
433 | _exit(1); | |
434 | } | |
435 | ||
436 | for (wrk = target_environ; *wrk; wrk++) { | |
ec45bbe5 | 437 | g_free(*wrk); |
84778508 BS |
438 | } |
439 | ||
ec45bbe5 | 440 | g_free(target_environ); |
84778508 | 441 | |
13829020 | 442 | if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
5ca870b9 | 443 | qemu_log("guest_base %p\n", (void *)guest_base); |
10d0d505 | 444 | log_page_dump("binary load"); |
2e77eac6 BS |
445 | |
446 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
447 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
448 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", | |
449 | info->start_code); | |
450 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", | |
451 | info->start_data); | |
452 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); | |
453 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", | |
454 | info->start_stack); | |
455 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); | |
456 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
457 | } | |
84778508 | 458 | |
031fe7af WL |
459 | /* build Task State */ |
460 | ts = g_new0(TaskState, 1); | |
461 | init_task_state(ts); | |
462 | ts->info = info; | |
463 | ts->bprm = &bprm; | |
464 | cpu->opaque = ts; | |
465 | ||
84778508 BS |
466 | target_set_brk(info->brk); |
467 | syscall_init(); | |
468 | signal_init(); | |
469 | ||
34bc8475 WL |
470 | /* |
471 | * Now that we've loaded the binary, GUEST_BASE is fixed. Delay | |
472 | * generating the prologue until now so that the prologue can take | |
473 | * the real value of GUEST_BASE into account. | |
474 | */ | |
b1311c4a | 475 | tcg_prologue_init(tcg_ctx); |
9002ec79 | 476 | |
031fe7af | 477 | target_cpu_init(env, regs); |
84778508 | 478 | |
fcedd920 AB |
479 | if (gdbstub) { |
480 | gdbserver_start(gdbstub); | |
db6b81d4 | 481 | gdb_handlesig(cpu, 0); |
84778508 | 482 | } |
78cfb07f | 483 | cpu_loop(env); |
84778508 BS |
484 | /* never exits */ |
485 | return 0; | |
486 | } |