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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 | |
48e438a3 | 21 | #include "qemu/osdep.h" |
312a0b1c WL |
22 | #include <sys/resource.h> |
23 | #include <sys/sysctl.h> | |
24 | ||
49f95221 | 25 | #include "qemu/help-texts.h" |
66d26ddb | 26 | #include "qemu/units.h" |
940e43aa | 27 | #include "qemu/accel.h" |
8c1c230a | 28 | #include "qemu-version.h" |
84778508 BS |
29 | #include <machine/trap.h> |
30 | ||
daa76aa4 | 31 | #include "qapi/error.h" |
84778508 | 32 | #include "qemu.h" |
6913e79c | 33 | #include "qemu/config-file.h" |
f5852efa | 34 | #include "qemu/error-report.h" |
f348b6d1 VB |
35 | #include "qemu/path.h" |
36 | #include "qemu/help_option.h" | |
0b8fa32f | 37 | #include "qemu/module.h" |
63c91552 | 38 | #include "exec/exec-all.h" |
d7ec12f8 | 39 | #include "tcg/startup.h" |
1de7afc9 PB |
40 | #include "qemu/timer.h" |
41 | #include "qemu/envlist.h" | |
29aabb4f | 42 | #include "qemu/cutils.h" |
508127e2 | 43 | #include "exec/log.h" |
6913e79c | 44 | #include "trace/control.h" |
03ecf078 WL |
45 | #include "crypto/init.h" |
46 | #include "qemu/guest-random.h" | |
d96bf49b | 47 | #include "gdbstub/user.h" |
fc0d96b4 | 48 | |
d1dc9ab3 | 49 | #include "host-os.h" |
031fe7af | 50 | #include "target_arch_cpu.h" |
d1dc9ab3 | 51 | |
8c45039f RH |
52 | |
53 | /* | |
54 | * TODO: Remove these and rely only on qemu_real_host_page_size(). | |
55 | */ | |
56 | uintptr_t qemu_host_page_size; | |
57 | intptr_t qemu_host_page_mask; | |
58 | ||
3cfb0456 | 59 | static bool opt_one_insn_per_tb; |
5ca870b9 | 60 | uintptr_t guest_base; |
e307c192 | 61 | bool have_guest_base; |
be04f210 WL |
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. | |
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. | |
73 | */ | |
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)) | |
95059f9c | 78 | # define MAX_RESERVED_VA 0xfffffffful |
be04f210 | 79 | # else |
95059f9c | 80 | # define MAX_RESERVED_VA ((1ul << TARGET_VIRT_ADDR_SPACE_BITS) - 1) |
be04f210 WL |
81 | # endif |
82 | # else | |
83 | # define MAX_RESERVED_VA 0 | |
84 | # endif | |
85 | #endif | |
86 | ||
87 | /* | |
88 | * That said, reserving *too* much vm space via mmap can run into problems | |
89 | * with rlimits, oom due to page table creation, etc. We will still try it, | |
90 | * if directed by the command-line option, but not by default. | |
91 | */ | |
92 | #if HOST_LONG_BITS == 64 && TARGET_VIRT_ADDR_SPACE_BITS <= 32 | |
93 | unsigned long reserved_va = MAX_RESERVED_VA; | |
94 | #else | |
d6ef40bf | 95 | unsigned long reserved_va; |
be04f210 | 96 | #endif |
1b530a6d | 97 | |
86327290 | 98 | const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
fccae322 | 99 | const char *qemu_uname_release; |
01a298a5 | 100 | char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */ |
84778508 | 101 | |
312a0b1c WL |
102 | unsigned long target_maxtsiz = TARGET_MAXTSIZ; /* max text size */ |
103 | unsigned long target_dfldsiz = TARGET_DFLDSIZ; /* initial data size limit */ | |
104 | unsigned long target_maxdsiz = TARGET_MAXDSIZ; /* max data size */ | |
105 | unsigned long target_dflssiz = TARGET_DFLSSIZ; /* initial data size limit */ | |
106 | unsigned long target_maxssiz = TARGET_MAXSSIZ; /* max stack size */ | |
107 | unsigned long target_sgrowsiz = TARGET_SGROWSIZ; /* amount to grow stack */ | |
84778508 | 108 | |
63cca106 | 109 | /* Helper routines for implementing atomic operations. */ |
9399f095 | 110 | |
9399f095 BS |
111 | void fork_start(void) |
112 | { | |
63cca106 WL |
113 | start_exclusive(); |
114 | cpu_list_lock(); | |
115 | mmap_fork_start(); | |
9399f095 BS |
116 | } |
117 | ||
118 | void fork_end(int child) | |
119 | { | |
120 | if (child) { | |
63cca106 WL |
121 | CPUState *cpu, *next_cpu; |
122 | /* | |
123 | * Child processes created by fork() only have a single thread. Discard | |
124 | * information about the parent threads. | |
125 | */ | |
126 | CPU_FOREACH_SAFE(cpu, next_cpu) { | |
127 | if (cpu != thread_cpu) { | |
3c55dd58 | 128 | QTAILQ_REMOVE_RCU(&cpus_queue, cpu, node); |
63cca106 WL |
129 | } |
130 | } | |
131 | mmap_fork_end(child); | |
132 | /* | |
133 | * qemu_init_cpu_list() takes care of reinitializing the exclusive | |
134 | * state, so we don't need to end_exclusive() here. | |
135 | */ | |
136 | qemu_init_cpu_list(); | |
f7ec7f7b | 137 | gdbserver_fork(thread_cpu); |
63cca106 WL |
138 | } else { |
139 | mmap_fork_end(child); | |
140 | cpu_list_unlock(); | |
141 | end_exclusive(); | |
9399f095 BS |
142 | } |
143 | } | |
144 | ||
031fe7af | 145 | void cpu_loop(CPUArchState *env) |
31fc12df | 146 | { |
031fe7af | 147 | target_cpu_loop(env); |
31fc12df BS |
148 | } |
149 | ||
84778508 BS |
150 | static void usage(void) |
151 | { | |
7e563bfb | 152 | printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
0781dd6e | 153 | "\n" QEMU_COPYRIGHT "\n" |
2e59915d | 154 | "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
84778508 BS |
155 | "BSD CPU emulator (compiled for %s emulation)\n" |
156 | "\n" | |
157 | "Standard options:\n" | |
158 | "-h print this help\n" | |
159 | "-g port wait gdb connection to port\n" | |
160 | "-L path set the elf interpreter prefix (default=%s)\n" | |
161 | "-s size set the stack size in bytes (default=%ld)\n" | |
c8057f95 | 162 | "-cpu model select CPU (-cpu help for list)\n" |
84778508 | 163 | "-drop-ld-preload drop LD_PRELOAD for target process\n" |
fc0d96b4 BS |
164 | "-E var=value sets/modifies targets environment variable(s)\n" |
165 | "-U var unsets targets environment variable(s)\n" | |
2fa5d9ba | 166 | "-B address set guest_base address to address\n" |
84778508 BS |
167 | "\n" |
168 | "Debug options:\n" | |
989b697d PM |
169 | "-d item1[,...] enable logging of specified items\n" |
170 | " (use '-d help' for a list of log items)\n" | |
171 | "-D logfile write logs to 'logfile' (default stderr)\n" | |
060e0cd7 | 172 | "-one-insn-per-tb run with one guest instruction per emulated TB\n" |
989b697d | 173 | "-strace log system calls\n" |
6913e79c LV |
174 | "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
175 | " specify tracing options\n" | |
84778508 BS |
176 | "\n" |
177 | "Environment variables:\n" | |
178 | "QEMU_STRACE Print system calls and arguments similar to the\n" | |
179 | " 'strace' program. Enable by setting to any value.\n" | |
fc0d96b4 BS |
180 | "You can use -E and -U options to set/unset environment variables\n" |
181 | "for target process. It is possible to provide several variables\n" | |
182 | "by repeating the option. For example:\n" | |
183 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
184 | "Note that if you provide several changes to single variable\n" | |
185 | "last change will stay in effect.\n" | |
f5048cb7 EB |
186 | "\n" |
187 | QEMU_HELP_BOTTOM "\n" | |
84778508 | 188 | , |
2e59915d | 189 | TARGET_NAME, |
84778508 | 190 | interp_prefix, |
312a0b1c | 191 | target_dflssiz); |
2d18e637 | 192 | exit(1); |
84778508 BS |
193 | } |
194 | ||
d42df502 | 195 | __thread CPUState *thread_cpu; |
84778508 | 196 | |
653ccec2 WL |
197 | void stop_all_tasks(void) |
198 | { | |
199 | /* | |
200 | * We trust when using NPTL (pthreads) start_exclusive() handles thread | |
201 | * stopping correctly. | |
202 | */ | |
203 | start_exclusive(); | |
204 | } | |
205 | ||
48f59211 EM |
206 | bool qemu_cpu_is_self(CPUState *cpu) |
207 | { | |
208 | return thread_cpu == cpu; | |
209 | } | |
210 | ||
211 | void qemu_cpu_kick(CPUState *cpu) | |
212 | { | |
213 | cpu_exit(cpu); | |
214 | } | |
215 | ||
84778508 | 216 | /* Assumes contents are already zeroed. */ |
b46d4ad7 | 217 | static void init_task_state(TaskState *ts) |
84778508 | 218 | { |
46f4f76d WL |
219 | ts->sigaltstack_used = (struct target_sigaltstack) { |
220 | .ss_sp = 0, | |
221 | .ss_size = 0, | |
222 | .ss_flags = TARGET_SS_DISABLE, | |
223 | }; | |
84778508 BS |
224 | } |
225 | ||
f0f7f9dc WL |
226 | void gemu_log(const char *fmt, ...) |
227 | { | |
228 | va_list ap; | |
229 | ||
230 | va_start(ap, fmt); | |
231 | vfprintf(stderr, fmt, ap); | |
232 | va_end(ap); | |
233 | } | |
234 | ||
312a0b1c WL |
235 | static void |
236 | adjust_ssize(void) | |
237 | { | |
238 | struct rlimit rl; | |
239 | ||
240 | if (getrlimit(RLIMIT_STACK, &rl) != 0) { | |
241 | return; | |
242 | } | |
243 | ||
244 | target_maxssiz = MIN(target_maxssiz, rl.rlim_max); | |
245 | target_dflssiz = MIN(MAX(target_dflssiz, rl.rlim_cur), target_maxssiz); | |
246 | ||
247 | rl.rlim_max = target_maxssiz; | |
248 | rl.rlim_cur = target_dflssiz; | |
249 | setrlimit(RLIMIT_STACK, &rl); | |
250 | } | |
251 | ||
01a298a5 WL |
252 | static void save_proc_pathname(char *argv0) |
253 | { | |
254 | int mib[4]; | |
255 | size_t len; | |
256 | ||
257 | mib[0] = CTL_KERN; | |
258 | mib[1] = KERN_PROC; | |
259 | mib[2] = KERN_PROC_PATHNAME; | |
260 | mib[3] = -1; | |
261 | ||
262 | len = sizeof(qemu_proc_pathname); | |
263 | if (sysctl(mib, 4, qemu_proc_pathname, &len, NULL, 0)) { | |
264 | perror("sysctl"); | |
265 | } | |
266 | } | |
267 | ||
84778508 BS |
268 | int main(int argc, char **argv) |
269 | { | |
270 | const char *filename; | |
271 | const char *cpu_model; | |
2278b939 | 272 | const char *cpu_type; |
989b697d | 273 | const char *log_file = NULL; |
c235d738 | 274 | const char *log_mask = NULL; |
03ecf078 | 275 | const char *seed_optarg = NULL; |
84778508 BS |
276 | struct target_pt_regs regs1, *regs = ®s1; |
277 | struct image_info info1, *info = &info1; | |
d37853f9 | 278 | struct bsd_binprm bprm; |
031fe7af | 279 | TaskState *ts; |
9349b4f9 | 280 | CPUArchState *env; |
db6b81d4 | 281 | CPUState *cpu; |
29aabb4f | 282 | int optind, rv; |
84778508 | 283 | const char *r; |
fcedd920 | 284 | const char *gdbstub = NULL; |
fc0d96b4 BS |
285 | char **target_environ, **wrk; |
286 | envlist_t *envlist = NULL; | |
b8012648 | 287 | char *argv0 = NULL; |
84778508 | 288 | |
312a0b1c WL |
289 | adjust_ssize(); |
290 | ||
b23a51dc | 291 | if (argc <= 1) { |
84778508 | 292 | usage(); |
b23a51dc | 293 | } |
84778508 | 294 | |
01a298a5 WL |
295 | save_proc_pathname(argv[0]); |
296 | ||
f5852efa | 297 | error_init(argv[0]); |
fe4db84d | 298 | module_call_init(MODULE_INIT_TRACE); |
267f685b | 299 | qemu_init_cpu_list(); |
ce008c1f AF |
300 | module_call_init(MODULE_INIT_QOM); |
301 | ||
ec45bbe5 | 302 | envlist = envlist_create(); |
fc0d96b4 | 303 | |
7f750efc AS |
304 | /* |
305 | * add current environment into the list | |
306 | * envlist_setenv adds to the front of the list; to preserve environ | |
307 | * order add from back to front | |
308 | */ | |
fc0d96b4 | 309 | for (wrk = environ; *wrk != NULL; wrk++) { |
7f750efc AS |
310 | continue; |
311 | } | |
312 | while (wrk != environ) { | |
313 | wrk--; | |
fc0d96b4 BS |
314 | (void) envlist_setenv(envlist, *wrk); |
315 | } | |
316 | ||
8c45039f RH |
317 | qemu_host_page_size = getpagesize(); |
318 | qemu_host_page_size = MAX(qemu_host_page_size, TARGET_PAGE_SIZE); | |
319 | ||
84778508 | 320 | cpu_model = NULL; |
0c62de2f | 321 | |
6913e79c LV |
322 | qemu_add_opts(&qemu_trace_opts); |
323 | ||
84778508 | 324 | optind = 1; |
6913e79c | 325 | for (;;) { |
b23a51dc | 326 | if (optind >= argc) { |
84778508 | 327 | break; |
b23a51dc | 328 | } |
84778508 | 329 | r = argv[optind]; |
b23a51dc | 330 | if (r[0] != '-') { |
84778508 | 331 | break; |
b23a51dc | 332 | } |
84778508 BS |
333 | optind++; |
334 | r++; | |
335 | if (!strcmp(r, "-")) { | |
336 | break; | |
337 | } else if (!strcmp(r, "d")) { | |
c235d738 | 338 | if (optind >= argc) { |
84778508 | 339 | break; |
84778508 | 340 | } |
c235d738 MF |
341 | log_mask = argv[optind++]; |
342 | } else if (!strcmp(r, "D")) { | |
343 | if (optind >= argc) { | |
344 | break; | |
345 | } | |
346 | log_file = argv[optind++]; | |
fc0d96b4 BS |
347 | } else if (!strcmp(r, "E")) { |
348 | r = argv[optind++]; | |
b23a51dc | 349 | if (envlist_setenv(envlist, r) != 0) { |
fc0d96b4 | 350 | usage(); |
b23a51dc | 351 | } |
f66724c9 SW |
352 | } else if (!strcmp(r, "ignore-environment")) { |
353 | envlist_free(envlist); | |
ec45bbe5 | 354 | envlist = envlist_create(); |
fc0d96b4 BS |
355 | } else if (!strcmp(r, "U")) { |
356 | r = argv[optind++]; | |
b23a51dc | 357 | if (envlist_unsetenv(envlist, r) != 0) { |
fc0d96b4 | 358 | usage(); |
b23a51dc | 359 | } |
84778508 BS |
360 | } else if (!strcmp(r, "s")) { |
361 | r = argv[optind++]; | |
312a0b1c WL |
362 | rv = qemu_strtoul(r, &r, 0, &target_dflssiz); |
363 | if (rv < 0 || target_dflssiz <= 0) { | |
84778508 | 364 | usage(); |
b23a51dc WL |
365 | } |
366 | if (*r == 'M') { | |
312a0b1c | 367 | target_dflssiz *= 1024 * 1024; |
b23a51dc | 368 | } else if (*r == 'k' || *r == 'K') { |
312a0b1c WL |
369 | target_dflssiz *= 1024; |
370 | } | |
371 | if (target_dflssiz > target_maxssiz) { | |
372 | usage(); | |
b23a51dc | 373 | } |
84778508 BS |
374 | } else if (!strcmp(r, "L")) { |
375 | interp_prefix = argv[optind++]; | |
376 | } else if (!strcmp(r, "p")) { | |
01e44980 RH |
377 | unsigned size, want = qemu_real_host_page_size(); |
378 | ||
379 | r = argv[optind++]; | |
380 | if (qemu_strtoui(r, NULL, 10, &size) || size != want) { | |
381 | warn_report("Deprecated page size option cannot " | |
382 | "change host page size (%u)", want); | |
84778508 BS |
383 | } |
384 | } else if (!strcmp(r, "g")) { | |
fcedd920 | 385 | gdbstub = g_strdup(argv[optind++]); |
84778508 BS |
386 | } else if (!strcmp(r, "r")) { |
387 | qemu_uname_release = argv[optind++]; | |
388 | } else if (!strcmp(r, "cpu")) { | |
389 | cpu_model = argv[optind++]; | |
c8057f95 | 390 | if (is_help_option(cpu_model)) { |
dfa47531 | 391 | list_cpus(); |
2d18e637 | 392 | exit(1); |
84778508 | 393 | } |
2fa5d9ba | 394 | } else if (!strcmp(r, "B")) { |
29aabb4f WL |
395 | rv = qemu_strtoul(argv[optind++], NULL, 0, &guest_base); |
396 | if (rv < 0) { | |
397 | usage(); | |
398 | } | |
d60c3b93 | 399 | have_guest_base = true; |
84778508 | 400 | } else if (!strcmp(r, "drop-ld-preload")) { |
fc0d96b4 | 401 | (void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
03ecf078 WL |
402 | } else if (!strcmp(r, "seed")) { |
403 | seed_optarg = optarg; | |
c61a0d31 | 404 | } else if (!strcmp(r, "one-insn-per-tb")) { |
3cfb0456 | 405 | opt_one_insn_per_tb = true; |
84778508 BS |
406 | } else if (!strcmp(r, "strace")) { |
407 | do_strace = 1; | |
6913e79c | 408 | } else if (!strcmp(r, "trace")) { |
92eecfff | 409 | trace_opt_parse(optarg); |
b8012648 CP |
410 | } else if (!strcmp(r, "0")) { |
411 | argv0 = argv[optind++]; | |
6913e79c | 412 | } else { |
84778508 BS |
413 | usage(); |
414 | } | |
415 | } | |
84778508 | 416 | |
8c45039f RH |
417 | qemu_host_page_mask = -qemu_host_page_size; |
418 | ||
c235d738 | 419 | /* init debug */ |
905c78fe RH |
420 | { |
421 | int mask = 0; | |
422 | if (log_mask) { | |
423 | mask = qemu_str_to_log_mask(log_mask); | |
424 | if (!mask) { | |
425 | qemu_print_log_usage(stdout); | |
426 | exit(1); | |
427 | } | |
c235d738 | 428 | } |
905c78fe | 429 | qemu_set_log_filename_flags(log_file, mask, &error_fatal); |
c235d738 MF |
430 | } |
431 | ||
4b5dfd82 PM |
432 | if (optind >= argc) { |
433 | usage(); | |
434 | } | |
435 | filename = argv[optind]; | |
b8012648 CP |
436 | if (argv0) { |
437 | argv[optind] = argv0; | |
438 | } | |
4b5dfd82 | 439 | |
6913e79c LV |
440 | if (!trace_init_backends()) { |
441 | exit(1); | |
442 | } | |
92eecfff | 443 | trace_init_file(); |
6913e79c | 444 | |
84778508 BS |
445 | /* Zero out regs */ |
446 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
447 | ||
d37853f9 WL |
448 | /* Zero bsd params */ |
449 | memset(&bprm, 0, sizeof(bprm)); | |
450 | ||
84778508 BS |
451 | /* Zero out image_info */ |
452 | memset(info, 0, sizeof(struct image_info)); | |
453 | ||
454 | /* Scan interp_prefix dir for replacement files. */ | |
455 | init_paths(interp_prefix); | |
456 | ||
457 | if (cpu_model == NULL) { | |
031fe7af | 458 | cpu_model = TARGET_DEFAULT_CPU_MODEL; |
84778508 | 459 | } |
2b5249b8 | 460 | |
b86f59c7 | 461 | cpu_type = parse_cpu_option(cpu_model); |
031fe7af | 462 | |
2b5249b8 | 463 | /* init tcg before creating CPUs and to get qemu_host_page_size */ |
940e43aa | 464 | { |
3cfb0456 PM |
465 | AccelState *accel = current_accel(); |
466 | AccelClass *ac = ACCEL_GET_CLASS(accel); | |
2b5249b8 | 467 | |
b86f59c7 | 468 | accel_init_interfaces(ac); |
3cfb0456 PM |
469 | object_property_set_bool(OBJECT(accel), "one-insn-per-tb", |
470 | opt_one_insn_per_tb, &error_abort); | |
92242f34 | 471 | ac->init_machine(NULL); |
940e43aa | 472 | } |
2278b939 | 473 | cpu = cpu_create(cpu_type); |
b77af26e | 474 | env = cpu_env(cpu); |
db6b81d4 | 475 | cpu_reset(cpu); |
db6b81d4 | 476 | thread_cpu = cpu; |
84778508 BS |
477 | |
478 | if (getenv("QEMU_STRACE")) { | |
479 | do_strace = 1; | |
480 | } | |
481 | ||
fc0d96b4 BS |
482 | target_environ = envlist_to_environ(envlist, NULL); |
483 | envlist_free(envlist); | |
484 | ||
03ecf078 WL |
485 | { |
486 | Error *err = NULL; | |
487 | if (seed_optarg != NULL) { | |
488 | qemu_guest_random_seed_main(seed_optarg, &err); | |
489 | } else { | |
490 | qcrypto_init(&err); | |
491 | } | |
492 | if (err) { | |
493 | error_reportf_err(err, "cannot initialize crypto: "); | |
494 | exit(1); | |
495 | } | |
496 | } | |
497 | ||
2fa5d9ba | 498 | /* |
fa79cde6 | 499 | * Now that page sizes are configured we can do |
2fa5d9ba BS |
500 | * proper page alignment for guest_base. |
501 | */ | |
28b61d49 RH |
502 | if (have_guest_base) { |
503 | if (guest_base & ~qemu_host_page_mask) { | |
504 | error_report("Selected guest base not host page aligned"); | |
505 | exit(1); | |
506 | } | |
507 | } | |
508 | ||
509 | /* | |
510 | * If reserving host virtual address space, do so now. | |
511 | * Combined with '-B', ensure that the chosen range is free. | |
512 | */ | |
513 | if (reserved_va) { | |
514 | void *p; | |
515 | ||
516 | if (have_guest_base) { | |
517 | p = mmap((void *)guest_base, reserved_va + 1, PROT_NONE, | |
518 | MAP_ANON | MAP_PRIVATE | MAP_FIXED | MAP_EXCL, -1, 0); | |
519 | } else { | |
520 | p = mmap(NULL, reserved_va + 1, PROT_NONE, | |
521 | MAP_ANON | MAP_PRIVATE, -1, 0); | |
522 | } | |
523 | if (p == MAP_FAILED) { | |
524 | const char *err = strerror(errno); | |
525 | char *sz = size_to_str(reserved_va + 1); | |
526 | ||
527 | if (have_guest_base) { | |
528 | error_report("Cannot allocate %s bytes at -B %p for guest " | |
529 | "address space: %s", sz, (void *)guest_base, err); | |
530 | } else { | |
531 | error_report("Cannot allocate %s bytes for guest " | |
532 | "address space: %s", sz, err); | |
533 | } | |
534 | exit(1); | |
535 | } | |
536 | guest_base = (uintptr_t)p; | |
537 | have_guest_base = true; | |
538 | ||
539 | /* Ensure that mmap_next_start is within range. */ | |
540 | if (reserved_va <= mmap_next_start) { | |
541 | mmap_next_start = (reserved_va / 4 * 3) | |
542 | & TARGET_PAGE_MASK & qemu_host_page_mask; | |
543 | } | |
544 | } | |
2fa5d9ba | 545 | |
d37853f9 WL |
546 | if (loader_exec(filename, argv + optind, target_environ, regs, info, |
547 | &bprm) != 0) { | |
84778508 BS |
548 | printf("Error loading %s\n", filename); |
549 | _exit(1); | |
550 | } | |
551 | ||
552 | for (wrk = target_environ; *wrk; wrk++) { | |
ec45bbe5 | 553 | g_free(*wrk); |
84778508 BS |
554 | } |
555 | ||
ec45bbe5 | 556 | g_free(target_environ); |
84778508 | 557 | |
13829020 | 558 | if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
43b76161 RH |
559 | FILE *f = qemu_log_trylock(); |
560 | if (f) { | |
561 | fprintf(f, "guest_base %p\n", (void *)guest_base); | |
562 | fprintf(f, "page layout changed following binary load\n"); | |
563 | page_dump(f); | |
564 | ||
43b76161 RH |
565 | fprintf(f, "end_code 0x" TARGET_ABI_FMT_lx "\n", |
566 | info->end_code); | |
567 | fprintf(f, "start_code 0x" TARGET_ABI_FMT_lx "\n", | |
568 | info->start_code); | |
569 | fprintf(f, "start_data 0x" TARGET_ABI_FMT_lx "\n", | |
570 | info->start_data); | |
571 | fprintf(f, "end_data 0x" TARGET_ABI_FMT_lx "\n", | |
572 | info->end_data); | |
573 | fprintf(f, "start_stack 0x" TARGET_ABI_FMT_lx "\n", | |
574 | info->start_stack); | |
575 | fprintf(f, "brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); | |
576 | fprintf(f, "entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
577 | ||
578 | qemu_log_unlock(f); | |
579 | } | |
2e77eac6 | 580 | } |
84778508 | 581 | |
031fe7af WL |
582 | /* build Task State */ |
583 | ts = g_new0(TaskState, 1); | |
584 | init_task_state(ts); | |
585 | ts->info = info; | |
586 | ts->bprm = &bprm; | |
587 | cpu->opaque = ts; | |
588 | ||
84778508 BS |
589 | target_set_brk(info->brk); |
590 | syscall_init(); | |
591 | signal_init(); | |
592 | ||
34bc8475 WL |
593 | /* |
594 | * Now that we've loaded the binary, GUEST_BASE is fixed. Delay | |
595 | * generating the prologue until now so that the prologue can take | |
596 | * the real value of GUEST_BASE into account. | |
597 | */ | |
935f75ae | 598 | tcg_prologue_init(); |
9002ec79 | 599 | |
031fe7af | 600 | target_cpu_init(env, regs); |
84778508 | 601 | |
fcedd920 AB |
602 | if (gdbstub) { |
603 | gdbserver_start(gdbstub); | |
db6b81d4 | 604 | gdb_handlesig(cpu, 0); |
84778508 | 605 | } |
78cfb07f | 606 | cpu_loop(env); |
84778508 BS |
607 | /* never exits */ |
608 | return 0; | |
609 | } |