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Commit | Line | Data |
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84778508 BS |
1 | /* |
2 | * qemu user main | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
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/>. |
84778508 | 18 | */ |
14a48c1d | 19 | |
2231197c | 20 | #include "qemu/osdep.h" |
a8d25326 | 21 | #include "qemu-common.h" |
66d26ddb | 22 | #include "qemu/units.h" |
940e43aa | 23 | #include "qemu/accel.h" |
14a48c1d | 24 | #include "sysemu/tcg.h" |
8c1c230a | 25 | #include "qemu-version.h" |
84778508 BS |
26 | #include <machine/trap.h> |
27 | ||
daa76aa4 | 28 | #include "qapi/error.h" |
84778508 | 29 | #include "qemu.h" |
6913e79c | 30 | #include "qemu/config-file.h" |
f5852efa | 31 | #include "qemu/error-report.h" |
f348b6d1 VB |
32 | #include "qemu/path.h" |
33 | #include "qemu/help_option.h" | |
0b8fa32f | 34 | #include "qemu/module.h" |
63c91552 | 35 | #include "exec/exec-all.h" |
dcb32f1d | 36 | #include "tcg/tcg.h" |
1de7afc9 PB |
37 | #include "qemu/timer.h" |
38 | #include "qemu/envlist.h" | |
29aabb4f | 39 | #include "qemu/cutils.h" |
508127e2 | 40 | #include "exec/log.h" |
6913e79c | 41 | #include "trace/control.h" |
fc0d96b4 | 42 | |
1b530a6d | 43 | int singlestep; |
2fa5d9ba | 44 | unsigned long mmap_min_addr; |
5ca870b9 | 45 | uintptr_t guest_base; |
e307c192 | 46 | bool have_guest_base; |
d6ef40bf | 47 | unsigned long reserved_va; |
1b530a6d | 48 | |
7ee2822c | 49 | static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; |
fccae322 | 50 | const char *qemu_uname_release; |
78cfb07f | 51 | enum BSDType bsd_type; |
84778508 | 52 | |
34bc8475 WL |
53 | /* |
54 | * XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so | |
55 | * we allocate a bigger stack. Need a better solution, for example | |
56 | * by remapping the process stack directly at the right place | |
57 | */ | |
84778508 BS |
58 | unsigned long x86_stack_size = 512 * 1024; |
59 | ||
60 | void gemu_log(const char *fmt, ...) | |
61 | { | |
62 | va_list ap; | |
63 | ||
64 | va_start(ap, fmt); | |
65 | vfprintf(stderr, fmt, ap); | |
66 | va_end(ap); | |
67 | } | |
9399f095 | 68 | |
31fc12df | 69 | #if defined(TARGET_I386) |
b98e9ca8 | 70 | int cpu_get_pic_interrupt(CPUX86State *env) |
31fc12df BS |
71 | { |
72 | return -1; | |
73 | } | |
74 | #endif | |
75 | ||
9399f095 BS |
76 | void fork_start(void) |
77 | { | |
78 | } | |
79 | ||
80 | void fork_end(int child) | |
81 | { | |
82 | if (child) { | |
f7ec7f7b | 83 | gdbserver_fork(thread_cpu); |
9399f095 BS |
84 | } |
85 | } | |
86 | ||
31fc12df BS |
87 | #ifdef TARGET_I386 |
88 | /***********************************************************/ | |
89 | /* CPUX86 core interface */ | |
90 | ||
31fc12df BS |
91 | uint64_t cpu_get_tsc(CPUX86State *env) |
92 | { | |
4a7428c5 | 93 | return cpu_get_host_ticks(); |
31fc12df BS |
94 | } |
95 | ||
96 | static void write_dt(void *ptr, unsigned long addr, unsigned long limit, | |
97 | int flags) | |
98 | { | |
99 | unsigned int e1, e2; | |
100 | uint32_t *p; | |
101 | e1 = (addr << 16) | (limit & 0xffff); | |
102 | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); | |
103 | e2 |= flags; | |
104 | p = ptr; | |
105 | p[0] = tswap32(e1); | |
106 | p[1] = tswap32(e2); | |
107 | } | |
108 | ||
109 | static uint64_t *idt_table; | |
110 | #ifdef TARGET_X86_64 | |
111 | static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, | |
112 | uint64_t addr, unsigned int sel) | |
113 | { | |
114 | uint32_t *p, e1, e2; | |
115 | e1 = (addr & 0xffff) | (sel << 16); | |
116 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
117 | p = ptr; | |
118 | p[0] = tswap32(e1); | |
119 | p[1] = tswap32(e2); | |
120 | p[2] = tswap32(addr >> 32); | |
121 | p[3] = 0; | |
122 | } | |
123 | /* only dpl matters as we do only user space emulation */ | |
124 | static void set_idt(int n, unsigned int dpl) | |
125 | { | |
126 | set_gate64(idt_table + n * 2, 0, dpl, 0, 0); | |
127 | } | |
128 | #else | |
129 | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, | |
130 | uint32_t addr, unsigned int sel) | |
131 | { | |
132 | uint32_t *p, e1, e2; | |
133 | e1 = (addr & 0xffff) | (sel << 16); | |
134 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
135 | p = ptr; | |
136 | p[0] = tswap32(e1); | |
137 | p[1] = tswap32(e2); | |
138 | } | |
139 | ||
140 | /* only dpl matters as we do only user space emulation */ | |
141 | static void set_idt(int n, unsigned int dpl) | |
142 | { | |
143 | set_gate(idt_table + n, 0, dpl, 0, 0); | |
144 | } | |
145 | #endif | |
146 | ||
78cfb07f | 147 | void cpu_loop(CPUX86State *env) |
31fc12df | 148 | { |
6aa9e42f | 149 | CPUState *cs = env_cpu(env); |
31fc12df BS |
150 | int trapnr; |
151 | abi_ulong pc; | |
81afda4a | 152 | /* target_siginfo_t info; */ |
31fc12df | 153 | |
d60c3b93 | 154 | for (;;) { |
d148d90e | 155 | cpu_exec_start(cs); |
ded554cd | 156 | trapnr = cpu_exec(cs); |
d148d90e SF |
157 | cpu_exec_end(cs); |
158 | process_queued_cpu_work(cs); | |
159 | ||
d60c3b93 | 160 | switch (trapnr) { |
31fc12df BS |
161 | case 0x80: |
162 | /* syscall from int $0x80 */ | |
78cfb07f JL |
163 | if (bsd_type == target_freebsd) { |
164 | abi_ulong params = (abi_ulong) env->regs[R_ESP] + | |
165 | sizeof(int32_t); | |
166 | int32_t syscall_nr = env->regs[R_EAX]; | |
167 | int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8; | |
168 | ||
169 | if (syscall_nr == TARGET_FREEBSD_NR_syscall) { | |
170 | get_user_s32(syscall_nr, params); | |
171 | params += sizeof(int32_t); | |
172 | } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) { | |
173 | get_user_s32(syscall_nr, params); | |
174 | params += sizeof(int64_t); | |
175 | } | |
176 | get_user_s32(arg1, params); | |
177 | params += sizeof(int32_t); | |
178 | get_user_s32(arg2, params); | |
179 | params += sizeof(int32_t); | |
180 | get_user_s32(arg3, params); | |
181 | params += sizeof(int32_t); | |
182 | get_user_s32(arg4, params); | |
183 | params += sizeof(int32_t); | |
184 | get_user_s32(arg5, params); | |
185 | params += sizeof(int32_t); | |
186 | get_user_s32(arg6, params); | |
187 | params += sizeof(int32_t); | |
188 | get_user_s32(arg7, params); | |
189 | params += sizeof(int32_t); | |
190 | get_user_s32(arg8, params); | |
191 | env->regs[R_EAX] = do_freebsd_syscall(env, | |
192 | syscall_nr, | |
193 | arg1, | |
194 | arg2, | |
195 | arg3, | |
196 | arg4, | |
197 | arg5, | |
198 | arg6, | |
199 | arg7, | |
200 | arg8); | |
81afda4a | 201 | } else { /* if (bsd_type == target_openbsd) */ |
78cfb07f JL |
202 | env->regs[R_EAX] = do_openbsd_syscall(env, |
203 | env->regs[R_EAX], | |
204 | env->regs[R_EBX], | |
205 | env->regs[R_ECX], | |
206 | env->regs[R_EDX], | |
207 | env->regs[R_ESI], | |
208 | env->regs[R_EDI], | |
209 | env->regs[R_EBP]); | |
210 | } | |
211 | if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { | |
212 | env->regs[R_EAX] = -env->regs[R_EAX]; | |
213 | env->eflags |= CC_C; | |
214 | } else { | |
215 | env->eflags &= ~CC_C; | |
216 | } | |
31fc12df BS |
217 | break; |
218 | #ifndef TARGET_ABI32 | |
219 | case EXCP_SYSCALL: | |
5ba18547 | 220 | /* syscall from syscall instruction */ |
b23a51dc | 221 | if (bsd_type == target_freebsd) { |
78cfb07f JL |
222 | env->regs[R_EAX] = do_freebsd_syscall(env, |
223 | env->regs[R_EAX], | |
224 | env->regs[R_EDI], | |
225 | env->regs[R_ESI], | |
226 | env->regs[R_EDX], | |
227 | env->regs[R_ECX], | |
228 | env->regs[8], | |
229 | env->regs[9], 0, 0); | |
b23a51dc | 230 | } else { /* if (bsd_type == target_openbsd) */ |
78cfb07f JL |
231 | env->regs[R_EAX] = do_openbsd_syscall(env, |
232 | env->regs[R_EAX], | |
233 | env->regs[R_EDI], | |
234 | env->regs[R_ESI], | |
235 | env->regs[R_EDX], | |
236 | env->regs[10], | |
237 | env->regs[8], | |
238 | env->regs[9]); | |
239 | } | |
31fc12df | 240 | env->eip = env->exception_next_eip; |
78cfb07f JL |
241 | if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { |
242 | env->regs[R_EAX] = -env->regs[R_EAX]; | |
243 | env->eflags |= CC_C; | |
244 | } else { | |
245 | env->eflags &= ~CC_C; | |
246 | } | |
31fc12df | 247 | break; |
31fc12df BS |
248 | #endif |
249 | case EXCP_INTERRUPT: | |
250 | /* just indicate that signals should be handled asap */ | |
251 | break; | |
31fc12df BS |
252 | default: |
253 | pc = env->segs[R_CS].base + env->eip; | |
b23a51dc WL |
254 | fprintf(stderr, |
255 | "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", | |
31fc12df BS |
256 | (long)pc, trapnr); |
257 | abort(); | |
258 | } | |
259 | process_pending_signals(env); | |
260 | } | |
261 | } | |
262 | #endif | |
263 | ||
84778508 BS |
264 | static void usage(void) |
265 | { | |
7e563bfb | 266 | printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION |
0781dd6e | 267 | "\n" QEMU_COPYRIGHT "\n" |
2e59915d | 268 | "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" |
84778508 BS |
269 | "BSD CPU emulator (compiled for %s emulation)\n" |
270 | "\n" | |
271 | "Standard options:\n" | |
272 | "-h print this help\n" | |
273 | "-g port wait gdb connection to port\n" | |
274 | "-L path set the elf interpreter prefix (default=%s)\n" | |
275 | "-s size set the stack size in bytes (default=%ld)\n" | |
c8057f95 | 276 | "-cpu model select CPU (-cpu help for list)\n" |
84778508 | 277 | "-drop-ld-preload drop LD_PRELOAD for target process\n" |
fc0d96b4 BS |
278 | "-E var=value sets/modifies targets environment variable(s)\n" |
279 | "-U var unsets targets environment variable(s)\n" | |
2fa5d9ba | 280 | "-B address set guest_base address to address\n" |
84778508 BS |
281 | "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" |
282 | "\n" | |
283 | "Debug options:\n" | |
989b697d PM |
284 | "-d item1[,...] enable logging of specified items\n" |
285 | " (use '-d help' for a list of log items)\n" | |
286 | "-D logfile write logs to 'logfile' (default stderr)\n" | |
287 | "-p pagesize set the host page size to 'pagesize'\n" | |
288 | "-singlestep always run in singlestep mode\n" | |
289 | "-strace log system calls\n" | |
6913e79c LV |
290 | "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
291 | " specify tracing options\n" | |
84778508 BS |
292 | "\n" |
293 | "Environment variables:\n" | |
294 | "QEMU_STRACE Print system calls and arguments similar to the\n" | |
295 | " 'strace' program. Enable by setting to any value.\n" | |
fc0d96b4 BS |
296 | "You can use -E and -U options to set/unset environment variables\n" |
297 | "for target process. It is possible to provide several variables\n" | |
298 | "by repeating the option. For example:\n" | |
299 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
300 | "Note that if you provide several changes to single variable\n" | |
301 | "last change will stay in effect.\n" | |
f5048cb7 EB |
302 | "\n" |
303 | QEMU_HELP_BOTTOM "\n" | |
84778508 | 304 | , |
2e59915d | 305 | TARGET_NAME, |
84778508 | 306 | interp_prefix, |
989b697d | 307 | x86_stack_size); |
2d18e637 | 308 | exit(1); |
84778508 BS |
309 | } |
310 | ||
dca1173c | 311 | THREAD CPUState *thread_cpu; |
84778508 | 312 | |
48f59211 EM |
313 | bool qemu_cpu_is_self(CPUState *cpu) |
314 | { | |
315 | return thread_cpu == cpu; | |
316 | } | |
317 | ||
318 | void qemu_cpu_kick(CPUState *cpu) | |
319 | { | |
320 | cpu_exit(cpu); | |
321 | } | |
322 | ||
84778508 BS |
323 | /* Assumes contents are already zeroed. */ |
324 | void init_task_state(TaskState *ts) | |
325 | { | |
326 | int i; | |
327 | ||
328 | ts->used = 1; | |
329 | ts->first_free = ts->sigqueue_table; | |
330 | for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { | |
331 | ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; | |
332 | } | |
333 | ts->sigqueue_table[i].next = NULL; | |
334 | } | |
335 | ||
336 | int main(int argc, char **argv) | |
337 | { | |
338 | const char *filename; | |
339 | const char *cpu_model; | |
2278b939 | 340 | const char *cpu_type; |
989b697d | 341 | const char *log_file = NULL; |
c235d738 | 342 | const char *log_mask = NULL; |
84778508 BS |
343 | struct target_pt_regs regs1, *regs = ®s1; |
344 | struct image_info info1, *info = &info1; | |
345 | TaskState ts1, *ts = &ts1; | |
9349b4f9 | 346 | CPUArchState *env; |
db6b81d4 | 347 | CPUState *cpu; |
29aabb4f | 348 | int optind, rv; |
84778508 | 349 | const char *r; |
fcedd920 | 350 | const char *gdbstub = NULL; |
fc0d96b4 BS |
351 | char **target_environ, **wrk; |
352 | envlist_t *envlist = NULL; | |
78cfb07f | 353 | bsd_type = target_openbsd; |
84778508 | 354 | |
b23a51dc | 355 | if (argc <= 1) { |
84778508 | 356 | usage(); |
b23a51dc | 357 | } |
84778508 | 358 | |
f5852efa | 359 | error_init(argv[0]); |
fe4db84d | 360 | module_call_init(MODULE_INIT_TRACE); |
267f685b | 361 | qemu_init_cpu_list(); |
ce008c1f AF |
362 | module_call_init(MODULE_INIT_QOM); |
363 | ||
ec45bbe5 | 364 | envlist = envlist_create(); |
fc0d96b4 BS |
365 | |
366 | /* add current environment into the list */ | |
367 | for (wrk = environ; *wrk != NULL; wrk++) { | |
368 | (void) envlist_setenv(envlist, *wrk); | |
369 | } | |
370 | ||
84778508 | 371 | cpu_model = NULL; |
0c62de2f | 372 | |
6913e79c LV |
373 | qemu_add_opts(&qemu_trace_opts); |
374 | ||
84778508 | 375 | optind = 1; |
6913e79c | 376 | for (;;) { |
b23a51dc | 377 | if (optind >= argc) { |
84778508 | 378 | break; |
b23a51dc | 379 | } |
84778508 | 380 | r = argv[optind]; |
b23a51dc | 381 | if (r[0] != '-') { |
84778508 | 382 | break; |
b23a51dc | 383 | } |
84778508 BS |
384 | optind++; |
385 | r++; | |
386 | if (!strcmp(r, "-")) { | |
387 | break; | |
388 | } else if (!strcmp(r, "d")) { | |
c235d738 | 389 | if (optind >= argc) { |
84778508 | 390 | break; |
84778508 | 391 | } |
c235d738 MF |
392 | log_mask = argv[optind++]; |
393 | } else if (!strcmp(r, "D")) { | |
394 | if (optind >= argc) { | |
395 | break; | |
396 | } | |
397 | log_file = argv[optind++]; | |
fc0d96b4 BS |
398 | } else if (!strcmp(r, "E")) { |
399 | r = argv[optind++]; | |
b23a51dc | 400 | if (envlist_setenv(envlist, r) != 0) { |
fc0d96b4 | 401 | usage(); |
b23a51dc | 402 | } |
f66724c9 SW |
403 | } else if (!strcmp(r, "ignore-environment")) { |
404 | envlist_free(envlist); | |
ec45bbe5 | 405 | envlist = envlist_create(); |
fc0d96b4 BS |
406 | } else if (!strcmp(r, "U")) { |
407 | r = argv[optind++]; | |
b23a51dc | 408 | if (envlist_unsetenv(envlist, r) != 0) { |
fc0d96b4 | 409 | usage(); |
b23a51dc | 410 | } |
84778508 BS |
411 | } else if (!strcmp(r, "s")) { |
412 | r = argv[optind++]; | |
29aabb4f WL |
413 | rv = qemu_strtoul(r, &r, 0, &x86_stack_size); |
414 | if (rv < 0 || x86_stack_size <= 0) { | |
84778508 | 415 | usage(); |
b23a51dc WL |
416 | } |
417 | if (*r == 'M') { | |
66d26ddb | 418 | x86_stack_size *= MiB; |
b23a51dc | 419 | } else if (*r == 'k' || *r == 'K') { |
66d26ddb | 420 | x86_stack_size *= KiB; |
b23a51dc | 421 | } |
84778508 BS |
422 | } else if (!strcmp(r, "L")) { |
423 | interp_prefix = argv[optind++]; | |
424 | } else if (!strcmp(r, "p")) { | |
425 | qemu_host_page_size = atoi(argv[optind++]); | |
426 | if (qemu_host_page_size == 0 || | |
427 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
428 | fprintf(stderr, "page size must be a power of two\n"); | |
429 | exit(1); | |
430 | } | |
431 | } else if (!strcmp(r, "g")) { | |
fcedd920 | 432 | gdbstub = g_strdup(argv[optind++]); |
84778508 BS |
433 | } else if (!strcmp(r, "r")) { |
434 | qemu_uname_release = argv[optind++]; | |
435 | } else if (!strcmp(r, "cpu")) { | |
436 | cpu_model = argv[optind++]; | |
c8057f95 | 437 | if (is_help_option(cpu_model)) { |
d60c3b93 | 438 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
84778508 | 439 | #if defined(cpu_list) |
d60c3b93 | 440 | cpu_list(); |
84778508 | 441 | #endif |
2d18e637 | 442 | exit(1); |
84778508 | 443 | } |
2fa5d9ba | 444 | } else if (!strcmp(r, "B")) { |
29aabb4f WL |
445 | rv = qemu_strtoul(argv[optind++], NULL, 0, &guest_base); |
446 | if (rv < 0) { | |
447 | usage(); | |
448 | } | |
d60c3b93 | 449 | have_guest_base = true; |
84778508 | 450 | } else if (!strcmp(r, "drop-ld-preload")) { |
fc0d96b4 | 451 | (void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
84778508 BS |
452 | } else if (!strcmp(r, "bsd")) { |
453 | if (!strcasecmp(argv[optind], "freebsd")) { | |
454 | bsd_type = target_freebsd; | |
455 | } else if (!strcasecmp(argv[optind], "netbsd")) { | |
456 | bsd_type = target_netbsd; | |
457 | } else if (!strcasecmp(argv[optind], "openbsd")) { | |
458 | bsd_type = target_openbsd; | |
459 | } else { | |
460 | usage(); | |
461 | } | |
462 | optind++; | |
1b530a6d AJ |
463 | } else if (!strcmp(r, "singlestep")) { |
464 | singlestep = 1; | |
84778508 BS |
465 | } else if (!strcmp(r, "strace")) { |
466 | do_strace = 1; | |
6913e79c | 467 | } else if (!strcmp(r, "trace")) { |
92eecfff | 468 | trace_opt_parse(optarg); |
6913e79c | 469 | } else { |
84778508 BS |
470 | usage(); |
471 | } | |
472 | } | |
84778508 | 473 | |
c235d738 | 474 | /* init debug */ |
f2937a33 | 475 | qemu_log_needs_buffers(); |
daa76aa4 | 476 | qemu_set_log_filename(log_file, &error_fatal); |
c235d738 MF |
477 | if (log_mask) { |
478 | int mask; | |
c235d738 | 479 | |
4fde1eba | 480 | mask = qemu_str_to_log_mask(log_mask); |
c235d738 | 481 | if (!mask) { |
59a6fa6e | 482 | qemu_print_log_usage(stdout); |
c235d738 MF |
483 | exit(1); |
484 | } | |
24537a01 | 485 | qemu_set_log(mask); |
c235d738 MF |
486 | } |
487 | ||
4b5dfd82 PM |
488 | if (optind >= argc) { |
489 | usage(); | |
490 | } | |
491 | filename = argv[optind]; | |
492 | ||
6913e79c LV |
493 | if (!trace_init_backends()) { |
494 | exit(1); | |
495 | } | |
92eecfff | 496 | trace_init_file(); |
6913e79c | 497 | |
84778508 BS |
498 | /* Zero out regs */ |
499 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
500 | ||
501 | /* Zero out image_info */ | |
502 | memset(info, 0, sizeof(struct image_info)); | |
503 | ||
504 | /* Scan interp_prefix dir for replacement files. */ | |
505 | init_paths(interp_prefix); | |
506 | ||
507 | if (cpu_model == NULL) { | |
31fc12df BS |
508 | #if defined(TARGET_I386) |
509 | #ifdef TARGET_X86_64 | |
510 | cpu_model = "qemu64"; | |
511 | #else | |
512 | cpu_model = "qemu32"; | |
513 | #endif | |
84778508 BS |
514 | #else |
515 | cpu_model = "any"; | |
516 | #endif | |
517 | } | |
2b5249b8 | 518 | |
b86f59c7 | 519 | cpu_type = parse_cpu_option(cpu_model); |
2b5249b8 | 520 | /* init tcg before creating CPUs and to get qemu_host_page_size */ |
940e43aa CF |
521 | { |
522 | AccelClass *ac = ACCEL_GET_CLASS(current_accel()); | |
2b5249b8 | 523 | |
b86f59c7 | 524 | accel_init_interfaces(ac); |
92242f34 | 525 | ac->init_machine(NULL); |
940e43aa | 526 | } |
2278b939 | 527 | cpu = cpu_create(cpu_type); |
2994fd96 | 528 | env = cpu->env_ptr; |
db6b81d4 | 529 | cpu_reset(cpu); |
db6b81d4 | 530 | thread_cpu = cpu; |
84778508 BS |
531 | |
532 | if (getenv("QEMU_STRACE")) { | |
533 | do_strace = 1; | |
534 | } | |
535 | ||
fc0d96b4 BS |
536 | target_environ = envlist_to_environ(envlist, NULL); |
537 | envlist_free(envlist); | |
538 | ||
2fa5d9ba | 539 | /* |
fa79cde6 | 540 | * Now that page sizes are configured we can do |
2fa5d9ba BS |
541 | * proper page alignment for guest_base. |
542 | */ | |
543 | guest_base = HOST_PAGE_ALIGN(guest_base); | |
544 | ||
545 | /* | |
546 | * Read in mmap_min_addr kernel parameter. This value is used | |
547 | * When loading the ELF image to determine whether guest_base | |
548 | * is needed. | |
549 | * | |
550 | * When user has explicitly set the quest base, we skip this | |
551 | * test. | |
552 | */ | |
553 | if (!have_guest_base) { | |
554 | FILE *fp; | |
555 | ||
b23a51dc WL |
556 | fp = fopen("/proc/sys/vm/mmap_min_addr", "r"); |
557 | if (fp != NULL) { | |
2fa5d9ba BS |
558 | unsigned long tmp; |
559 | if (fscanf(fp, "%lu", &tmp) == 1) { | |
560 | mmap_min_addr = tmp; | |
b23a51dc WL |
561 | qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", |
562 | mmap_min_addr); | |
2fa5d9ba BS |
563 | } |
564 | fclose(fp); | |
565 | } | |
566 | } | |
84778508 | 567 | |
d60c3b93 | 568 | if (loader_exec(filename, argv + optind, target_environ, regs, info) != 0) { |
84778508 BS |
569 | printf("Error loading %s\n", filename); |
570 | _exit(1); | |
571 | } | |
572 | ||
573 | for (wrk = target_environ; *wrk; wrk++) { | |
ec45bbe5 | 574 | g_free(*wrk); |
84778508 BS |
575 | } |
576 | ||
ec45bbe5 | 577 | g_free(target_environ); |
84778508 | 578 | |
13829020 | 579 | if (qemu_loglevel_mask(CPU_LOG_PAGE)) { |
5ca870b9 | 580 | qemu_log("guest_base %p\n", (void *)guest_base); |
10d0d505 | 581 | log_page_dump("binary load"); |
2e77eac6 BS |
582 | |
583 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
584 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
585 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", | |
586 | info->start_code); | |
587 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", | |
588 | info->start_data); | |
589 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); | |
590 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", | |
591 | info->start_stack); | |
592 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); | |
593 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
594 | } | |
84778508 BS |
595 | |
596 | target_set_brk(info->brk); | |
597 | syscall_init(); | |
598 | signal_init(); | |
599 | ||
34bc8475 WL |
600 | /* |
601 | * Now that we've loaded the binary, GUEST_BASE is fixed. Delay | |
602 | * generating the prologue until now so that the prologue can take | |
603 | * the real value of GUEST_BASE into account. | |
604 | */ | |
b1311c4a | 605 | tcg_prologue_init(tcg_ctx); |
9002ec79 | 606 | |
84778508 BS |
607 | /* build Task State */ |
608 | memset(ts, 0, sizeof(TaskState)); | |
609 | init_task_state(ts); | |
610 | ts->info = info; | |
0429a971 | 611 | cpu->opaque = ts; |
84778508 | 612 | |
31fc12df | 613 | #if defined(TARGET_I386) |
31fc12df | 614 | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; |
b98dbc90 | 615 | env->hflags |= HF_PE_MASK | HF_CPL_MASK; |
0514ef2f | 616 | if (env->features[FEAT_1_EDX] & CPUID_SSE) { |
31fc12df BS |
617 | env->cr[4] |= CR4_OSFXSR_MASK; |
618 | env->hflags |= HF_OSFXSR_MASK; | |
619 | } | |
620 | #ifndef TARGET_ABI32 | |
621 | /* enable 64 bit mode if possible */ | |
0514ef2f | 622 | if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) { |
31fc12df BS |
623 | fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); |
624 | exit(1); | |
625 | } | |
626 | env->cr[4] |= CR4_PAE_MASK; | |
627 | env->efer |= MSR_EFER_LMA | MSR_EFER_LME; | |
628 | env->hflags |= HF_LMA_MASK; | |
629 | #endif | |
630 | ||
631 | /* flags setup : we activate the IRQs by default as in user mode */ | |
632 | env->eflags |= IF_MASK; | |
633 | ||
634 | /* linux register setup */ | |
635 | #ifndef TARGET_ABI32 | |
636 | env->regs[R_EAX] = regs->rax; | |
637 | env->regs[R_EBX] = regs->rbx; | |
638 | env->regs[R_ECX] = regs->rcx; | |
639 | env->regs[R_EDX] = regs->rdx; | |
640 | env->regs[R_ESI] = regs->rsi; | |
641 | env->regs[R_EDI] = regs->rdi; | |
642 | env->regs[R_EBP] = regs->rbp; | |
643 | env->regs[R_ESP] = regs->rsp; | |
644 | env->eip = regs->rip; | |
645 | #else | |
646 | env->regs[R_EAX] = regs->eax; | |
647 | env->regs[R_EBX] = regs->ebx; | |
648 | env->regs[R_ECX] = regs->ecx; | |
649 | env->regs[R_EDX] = regs->edx; | |
650 | env->regs[R_ESI] = regs->esi; | |
651 | env->regs[R_EDI] = regs->edi; | |
652 | env->regs[R_EBP] = regs->ebp; | |
653 | env->regs[R_ESP] = regs->esp; | |
654 | env->eip = regs->eip; | |
655 | #endif | |
656 | ||
657 | /* linux interrupt setup */ | |
658 | #ifndef TARGET_ABI32 | |
659 | env->idt.limit = 511; | |
660 | #else | |
661 | env->idt.limit = 255; | |
662 | #endif | |
663 | env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), | |
d60c3b93 WL |
664 | PROT_READ | PROT_WRITE, |
665 | MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); | |
3e8f1628 | 666 | idt_table = g2h_untagged(env->idt.base); |
31fc12df BS |
667 | set_idt(0, 0); |
668 | set_idt(1, 0); | |
669 | set_idt(2, 0); | |
670 | set_idt(3, 3); | |
671 | set_idt(4, 3); | |
672 | set_idt(5, 0); | |
673 | set_idt(6, 0); | |
674 | set_idt(7, 0); | |
675 | set_idt(8, 0); | |
676 | set_idt(9, 0); | |
677 | set_idt(10, 0); | |
678 | set_idt(11, 0); | |
679 | set_idt(12, 0); | |
680 | set_idt(13, 0); | |
681 | set_idt(14, 0); | |
682 | set_idt(15, 0); | |
683 | set_idt(16, 0); | |
684 | set_idt(17, 0); | |
685 | set_idt(18, 0); | |
686 | set_idt(19, 0); | |
687 | set_idt(0x80, 3); | |
688 | ||
689 | /* linux segment setup */ | |
690 | { | |
691 | uint64_t *gdt_table; | |
692 | env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, | |
d60c3b93 WL |
693 | PROT_READ | PROT_WRITE, |
694 | MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); | |
31fc12df | 695 | env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; |
3e8f1628 | 696 | gdt_table = g2h_untagged(env->gdt.base); |
31fc12df BS |
697 | #ifdef TARGET_ABI32 |
698 | write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, | |
699 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
700 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
701 | #else | |
702 | /* 64 bit code segment */ | |
703 | write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, | |
704 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
705 | DESC_L_MASK | | |
706 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
707 | #endif | |
708 | write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, | |
709 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
710 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
711 | } | |
712 | ||
713 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
714 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
715 | #ifdef TARGET_ABI32 | |
716 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
717 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
718 | cpu_x86_load_seg(env, R_FS, __USER_DS); | |
719 | cpu_x86_load_seg(env, R_GS, __USER_DS); | |
720 | /* This hack makes Wine work... */ | |
721 | env->segs[R_FS].selector = 0; | |
722 | #else | |
723 | cpu_x86_load_seg(env, R_DS, 0); | |
724 | cpu_x86_load_seg(env, R_ES, 0); | |
725 | cpu_x86_load_seg(env, R_FS, 0); | |
726 | cpu_x86_load_seg(env, R_GS, 0); | |
727 | #endif | |
84778508 BS |
728 | #else |
729 | #error unsupported target CPU | |
730 | #endif | |
731 | ||
fcedd920 AB |
732 | if (gdbstub) { |
733 | gdbserver_start(gdbstub); | |
db6b81d4 | 734 | gdb_handlesig(cpu, 0); |
84778508 | 735 | } |
78cfb07f | 736 | cpu_loop(env); |
84778508 BS |
737 | /* never exits */ |
738 | return 0; | |
739 | } |