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