4 * Copyright (c) 2003-2008 Fabrice Bellard
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
25 #include <machine/trap.h>
26 #include <sys/types.h>
30 #include "qemu-common.h"
34 #include "qemu/timer.h"
35 #include "qemu/envlist.h"
38 #if defined(CONFIG_USE_GUEST_BASE)
39 unsigned long mmap_min_addr;
40 unsigned long guest_base;
42 unsigned long reserved_va;
45 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
46 const char *qemu_uname_release;
47 extern char **environ;
48 enum BSDType bsd_type;
50 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
51 we allocate a bigger stack. Need a better solution, for example
52 by remapping the process stack directly at the right place */
53 unsigned long x86_stack_size = 512 * 1024;
55 void gemu_log(const char *fmt, ...)
60 vfprintf(stderr, fmt, ap);
64 #if defined(TARGET_I386)
65 int cpu_get_pic_interrupt(CPUX86State *env)
71 /* These are no-ops because we are not threadsafe. */
72 static inline void cpu_exec_start(CPUArchState *env)
76 static inline void cpu_exec_end(CPUArchState *env)
80 static inline void start_exclusive(void)
84 static inline void end_exclusive(void)
92 void fork_end(int child)
95 gdbserver_fork((CPUArchState *)thread_cpu->env_ptr);
99 void cpu_list_lock(void)
103 void cpu_list_unlock(void)
108 /***********************************************************/
109 /* CPUX86 core interface */
111 void cpu_smm_update(CPUX86State *env)
115 uint64_t cpu_get_tsc(CPUX86State *env)
117 return cpu_get_real_ticks();
120 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
125 e1 = (addr << 16) | (limit & 0xffff);
126 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
133 static uint64_t *idt_table;
135 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
136 uint64_t addr, unsigned int sel)
139 e1 = (addr & 0xffff) | (sel << 16);
140 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
144 p[2] = tswap32(addr >> 32);
147 /* only dpl matters as we do only user space emulation */
148 static void set_idt(int n, unsigned int dpl)
150 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
153 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
154 uint32_t addr, unsigned int sel)
157 e1 = (addr & 0xffff) | (sel << 16);
158 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
164 /* only dpl matters as we do only user space emulation */
165 static void set_idt(int n, unsigned int dpl)
167 set_gate(idt_table + n, 0, dpl, 0, 0);
171 void cpu_loop(CPUX86State *env)
175 //target_siginfo_t info;
178 trapnr = cpu_x86_exec(env);
181 /* syscall from int $0x80 */
182 if (bsd_type == target_freebsd) {
183 abi_ulong params = (abi_ulong) env->regs[R_ESP] +
185 int32_t syscall_nr = env->regs[R_EAX];
186 int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
188 if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
189 get_user_s32(syscall_nr, params);
190 params += sizeof(int32_t);
191 } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
192 get_user_s32(syscall_nr, params);
193 params += sizeof(int64_t);
195 get_user_s32(arg1, params);
196 params += sizeof(int32_t);
197 get_user_s32(arg2, params);
198 params += sizeof(int32_t);
199 get_user_s32(arg3, params);
200 params += sizeof(int32_t);
201 get_user_s32(arg4, params);
202 params += sizeof(int32_t);
203 get_user_s32(arg5, params);
204 params += sizeof(int32_t);
205 get_user_s32(arg6, params);
206 params += sizeof(int32_t);
207 get_user_s32(arg7, params);
208 params += sizeof(int32_t);
209 get_user_s32(arg8, params);
210 env->regs[R_EAX] = do_freebsd_syscall(env,
220 } else { //if (bsd_type == target_openbsd)
221 env->regs[R_EAX] = do_openbsd_syscall(env,
230 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
231 env->regs[R_EAX] = -env->regs[R_EAX];
234 env->eflags &= ~CC_C;
239 /* syscall from syscall instruction */
240 if (bsd_type == target_freebsd)
241 env->regs[R_EAX] = do_freebsd_syscall(env,
249 else { //if (bsd_type == target_openbsd)
250 env->regs[R_EAX] = do_openbsd_syscall(env,
259 env->eip = env->exception_next_eip;
260 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
261 env->regs[R_EAX] = -env->regs[R_EAX];
264 env->eflags &= ~CC_C;
271 info.si_signo = SIGBUS;
273 info.si_code = TARGET_SI_KERNEL;
274 info._sifields._sigfault._addr = 0;
275 queue_signal(env, info.si_signo, &info);
278 /* XXX: potential problem if ABI32 */
279 #ifndef TARGET_X86_64
280 if (env->eflags & VM_MASK) {
281 handle_vm86_fault(env);
285 info.si_signo = SIGSEGV;
287 info.si_code = TARGET_SI_KERNEL;
288 info._sifields._sigfault._addr = 0;
289 queue_signal(env, info.si_signo, &info);
293 info.si_signo = SIGSEGV;
295 if (!(env->error_code & 1))
296 info.si_code = TARGET_SEGV_MAPERR;
298 info.si_code = TARGET_SEGV_ACCERR;
299 info._sifields._sigfault._addr = env->cr[2];
300 queue_signal(env, info.si_signo, &info);
303 #ifndef TARGET_X86_64
304 if (env->eflags & VM_MASK) {
305 handle_vm86_trap(env, trapnr);
309 /* division by zero */
310 info.si_signo = SIGFPE;
312 info.si_code = TARGET_FPE_INTDIV;
313 info._sifields._sigfault._addr = env->eip;
314 queue_signal(env, info.si_signo, &info);
319 #ifndef TARGET_X86_64
320 if (env->eflags & VM_MASK) {
321 handle_vm86_trap(env, trapnr);
325 info.si_signo = SIGTRAP;
327 if (trapnr == EXCP01_DB) {
328 info.si_code = TARGET_TRAP_BRKPT;
329 info._sifields._sigfault._addr = env->eip;
331 info.si_code = TARGET_SI_KERNEL;
332 info._sifields._sigfault._addr = 0;
334 queue_signal(env, info.si_signo, &info);
339 #ifndef TARGET_X86_64
340 if (env->eflags & VM_MASK) {
341 handle_vm86_trap(env, trapnr);
345 info.si_signo = SIGSEGV;
347 info.si_code = TARGET_SI_KERNEL;
348 info._sifields._sigfault._addr = 0;
349 queue_signal(env, info.si_signo, &info);
353 info.si_signo = SIGILL;
355 info.si_code = TARGET_ILL_ILLOPN;
356 info._sifields._sigfault._addr = env->eip;
357 queue_signal(env, info.si_signo, &info);
361 /* just indicate that signals should be handled asap */
368 sig = gdb_handlesig (env, TARGET_SIGTRAP);
373 info.si_code = TARGET_TRAP_BRKPT;
374 queue_signal(env, info.si_signo, &info);
380 pc = env->segs[R_CS].base + env->eip;
381 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
385 process_pending_signals(env);
391 #define SPARC64_STACK_BIAS 2047
394 /* WARNING: dealing with register windows _is_ complicated. More info
395 can be found at http://www.sics.se/~psm/sparcstack.html */
396 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
398 index = (index + cwp * 16) % (16 * env->nwindows);
399 /* wrap handling : if cwp is on the last window, then we use the
400 registers 'after' the end */
401 if (index < 8 && env->cwp == env->nwindows - 1)
402 index += 16 * env->nwindows;
406 /* save the register window 'cwp1' */
407 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
412 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
413 #ifdef TARGET_SPARC64
415 sp_ptr += SPARC64_STACK_BIAS;
417 #if defined(DEBUG_WIN)
418 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
421 for(i = 0; i < 16; i++) {
422 /* FIXME - what to do if put_user() fails? */
423 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
424 sp_ptr += sizeof(abi_ulong);
428 static void save_window(CPUSPARCState *env)
430 #ifndef TARGET_SPARC64
431 unsigned int new_wim;
432 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
433 ((1LL << env->nwindows) - 1);
434 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
437 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
443 static void restore_window(CPUSPARCState *env)
445 #ifndef TARGET_SPARC64
446 unsigned int new_wim;
448 unsigned int i, cwp1;
451 #ifndef TARGET_SPARC64
452 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
453 ((1LL << env->nwindows) - 1);
456 /* restore the invalid window */
457 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
458 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
459 #ifdef TARGET_SPARC64
461 sp_ptr += SPARC64_STACK_BIAS;
463 #if defined(DEBUG_WIN)
464 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
467 for(i = 0; i < 16; i++) {
468 /* FIXME - what to do if get_user() fails? */
469 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
470 sp_ptr += sizeof(abi_ulong);
472 #ifdef TARGET_SPARC64
474 if (env->cleanwin < env->nwindows - 1)
482 static void flush_windows(CPUSPARCState *env)
488 /* if restore would invoke restore_window(), then we can stop */
489 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
490 #ifndef TARGET_SPARC64
491 if (env->wim & (1 << cwp1))
494 if (env->canrestore == 0)
499 save_window_offset(env, cwp1);
502 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
503 #ifndef TARGET_SPARC64
504 /* set wim so that restore will reload the registers */
505 env->wim = 1 << cwp1;
507 #if defined(DEBUG_WIN)
508 printf("flush_windows: nb=%d\n", offset - 1);
512 void cpu_loop(CPUSPARCState *env)
514 CPUState *cs = CPU(sparc_env_get_cpu(env));
515 int trapnr, ret, syscall_nr;
516 //target_siginfo_t info;
519 trapnr = cpu_sparc_exec (env);
522 #ifndef TARGET_SPARC64
525 /* FreeBSD uses 0x141 for syscalls too */
527 if (bsd_type != target_freebsd)
531 syscall_nr = env->gregs[1];
532 if (bsd_type == target_freebsd)
533 ret = do_freebsd_syscall(env, syscall_nr,
534 env->regwptr[0], env->regwptr[1],
535 env->regwptr[2], env->regwptr[3],
536 env->regwptr[4], env->regwptr[5], 0, 0);
537 else if (bsd_type == target_netbsd)
538 ret = do_netbsd_syscall(env, syscall_nr,
539 env->regwptr[0], env->regwptr[1],
540 env->regwptr[2], env->regwptr[3],
541 env->regwptr[4], env->regwptr[5]);
542 else { //if (bsd_type == target_openbsd)
543 #if defined(TARGET_SPARC64)
544 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
545 TARGET_OPENBSD_SYSCALL_G2RFLAG);
547 ret = do_openbsd_syscall(env, syscall_nr,
548 env->regwptr[0], env->regwptr[1],
549 env->regwptr[2], env->regwptr[3],
550 env->regwptr[4], env->regwptr[5]);
552 if ((unsigned int)ret >= (unsigned int)(-515)) {
554 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
555 env->xcc |= PSR_CARRY;
557 env->psr |= PSR_CARRY;
560 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
561 env->xcc &= ~PSR_CARRY;
563 env->psr &= ~PSR_CARRY;
566 env->regwptr[0] = ret;
567 /* next instruction */
568 #if defined(TARGET_SPARC64)
569 if (bsd_type == target_openbsd &&
570 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
571 env->pc = env->gregs[2];
572 env->npc = env->pc + 4;
573 } else if (bsd_type == target_openbsd &&
574 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
575 env->pc = env->gregs[7];
576 env->npc = env->pc + 4;
579 env->npc = env->npc + 4;
583 env->npc = env->npc + 4;
586 case 0x83: /* flush windows */
591 /* next instruction */
593 env->npc = env->npc + 4;
595 #ifndef TARGET_SPARC64
596 case TT_WIN_OVF: /* window overflow */
599 case TT_WIN_UNF: /* window underflow */
606 info.si_signo = SIGSEGV;
608 /* XXX: check env->error_code */
609 info.si_code = TARGET_SEGV_MAPERR;
610 info._sifields._sigfault._addr = env->mmuregs[4];
611 queue_signal(env, info.si_signo, &info);
616 case TT_SPILL: /* window overflow */
619 case TT_FILL: /* window underflow */
626 info.si_signo = SIGSEGV;
628 /* XXX: check env->error_code */
629 info.si_code = TARGET_SEGV_MAPERR;
630 if (trapnr == TT_DFAULT)
631 info._sifields._sigfault._addr = env->dmmuregs[4];
633 info._sifields._sigfault._addr = env->tsptr->tpc;
634 //queue_signal(env, info.si_signo, &info);
640 /* just indicate that signals should be handled asap */
646 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
652 info.si_code = TARGET_TRAP_BRKPT;
653 //queue_signal(env, info.si_signo, &info);
659 #ifdef TARGET_SPARC64
662 printf ("Unhandled trap: 0x%x\n", trapnr);
663 cpu_dump_state(cs, stderr, fprintf, 0);
666 process_pending_signals (env);
672 static void usage(void)
674 printf("qemu-" TARGET_NAME " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
675 "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
676 "BSD CPU emulator (compiled for %s emulation)\n"
678 "Standard options:\n"
679 "-h print this help\n"
680 "-g port wait gdb connection to port\n"
681 "-L path set the elf interpreter prefix (default=%s)\n"
682 "-s size set the stack size in bytes (default=%ld)\n"
683 "-cpu model select CPU (-cpu help for list)\n"
684 "-drop-ld-preload drop LD_PRELOAD for target process\n"
685 "-E var=value sets/modifies targets environment variable(s)\n"
686 "-U var unsets targets environment variable(s)\n"
687 #if defined(CONFIG_USE_GUEST_BASE)
688 "-B address set guest_base address to address\n"
690 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
693 "-d item1[,...] enable logging of specified items\n"
694 " (use '-d help' for a list of log items)\n"
695 "-D logfile write logs to 'logfile' (default stderr)\n"
696 "-p pagesize set the host page size to 'pagesize'\n"
697 "-singlestep always run in singlestep mode\n"
698 "-strace log system calls\n"
700 "Environment variables:\n"
701 "QEMU_STRACE Print system calls and arguments similar to the\n"
702 " 'strace' program. Enable by setting to any value.\n"
703 "You can use -E and -U options to set/unset environment variables\n"
704 "for target process. It is possible to provide several variables\n"
705 "by repeating the option. For example:\n"
706 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
707 "Note that if you provide several changes to single variable\n"
708 "last change will stay in effect.\n"
716 THREAD CPUState *thread_cpu;
718 /* Assumes contents are already zeroed. */
719 void init_task_state(TaskState *ts)
724 ts->first_free = ts->sigqueue_table;
725 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
726 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
728 ts->sigqueue_table[i].next = NULL;
731 int main(int argc, char **argv)
733 const char *filename;
734 const char *cpu_model;
735 const char *log_file = NULL;
736 const char *log_mask = NULL;
737 struct target_pt_regs regs1, *regs = ®s1;
738 struct image_info info1, *info = &info1;
739 TaskState ts1, *ts = &ts1;
744 int gdbstub_port = 0;
745 char **target_environ, **wrk;
746 envlist_t *envlist = NULL;
747 bsd_type = target_openbsd;
752 module_call_init(MODULE_INIT_QOM);
754 if ((envlist = envlist_create()) == NULL) {
755 (void) fprintf(stderr, "Unable to allocate envlist\n");
759 /* add current environment into the list */
760 for (wrk = environ; *wrk != NULL; wrk++) {
761 (void) envlist_setenv(envlist, *wrk);
765 #if defined(cpudef_setup)
766 cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
778 if (!strcmp(r, "-")) {
780 } else if (!strcmp(r, "d")) {
781 if (optind >= argc) {
784 log_mask = argv[optind++];
785 } else if (!strcmp(r, "D")) {
786 if (optind >= argc) {
789 log_file = argv[optind++];
790 } else if (!strcmp(r, "E")) {
792 if (envlist_setenv(envlist, r) != 0)
794 } else if (!strcmp(r, "ignore-environment")) {
795 envlist_free(envlist);
796 if ((envlist = envlist_create()) == NULL) {
797 (void) fprintf(stderr, "Unable to allocate envlist\n");
800 } else if (!strcmp(r, "U")) {
802 if (envlist_unsetenv(envlist, r) != 0)
804 } else if (!strcmp(r, "s")) {
806 x86_stack_size = strtol(r, (char **)&r, 0);
807 if (x86_stack_size <= 0)
810 x86_stack_size *= 1024 * 1024;
811 else if (*r == 'k' || *r == 'K')
812 x86_stack_size *= 1024;
813 } else if (!strcmp(r, "L")) {
814 interp_prefix = argv[optind++];
815 } else if (!strcmp(r, "p")) {
816 qemu_host_page_size = atoi(argv[optind++]);
817 if (qemu_host_page_size == 0 ||
818 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
819 fprintf(stderr, "page size must be a power of two\n");
822 } else if (!strcmp(r, "g")) {
823 gdbstub_port = atoi(argv[optind++]);
824 } else if (!strcmp(r, "r")) {
825 qemu_uname_release = argv[optind++];
826 } else if (!strcmp(r, "cpu")) {
827 cpu_model = argv[optind++];
828 if (is_help_option(cpu_model)) {
829 /* XXX: implement xxx_cpu_list for targets that still miss it */
830 #if defined(cpu_list)
831 cpu_list(stdout, &fprintf);
835 #if defined(CONFIG_USE_GUEST_BASE)
836 } else if (!strcmp(r, "B")) {
837 guest_base = strtol(argv[optind++], NULL, 0);
840 } else if (!strcmp(r, "drop-ld-preload")) {
841 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
842 } else if (!strcmp(r, "bsd")) {
843 if (!strcasecmp(argv[optind], "freebsd")) {
844 bsd_type = target_freebsd;
845 } else if (!strcasecmp(argv[optind], "netbsd")) {
846 bsd_type = target_netbsd;
847 } else if (!strcasecmp(argv[optind], "openbsd")) {
848 bsd_type = target_openbsd;
853 } else if (!strcmp(r, "singlestep")) {
855 } else if (!strcmp(r, "strace")) {
864 qemu_set_log_filename(log_file);
868 mask = qemu_str_to_log_mask(log_mask);
870 qemu_print_log_usage(stdout);
876 if (optind >= argc) {
879 filename = argv[optind];
882 memset(regs, 0, sizeof(struct target_pt_regs));
884 /* Zero out image_info */
885 memset(info, 0, sizeof(struct image_info));
887 /* Scan interp_prefix dir for replacement files. */
888 init_paths(interp_prefix);
890 if (cpu_model == NULL) {
891 #if defined(TARGET_I386)
893 cpu_model = "qemu64";
895 cpu_model = "qemu32";
897 #elif defined(TARGET_SPARC)
898 #ifdef TARGET_SPARC64
899 cpu_model = "TI UltraSparc II";
901 cpu_model = "Fujitsu MB86904";
909 /* NOTE: we need to init the CPU at this stage to get
910 qemu_host_page_size */
911 env = cpu_init(cpu_model);
913 fprintf(stderr, "Unable to find CPU definition\n");
916 cpu = ENV_GET_CPU(env);
917 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
922 if (getenv("QEMU_STRACE")) {
926 target_environ = envlist_to_environ(envlist, NULL);
927 envlist_free(envlist);
929 #if defined(CONFIG_USE_GUEST_BASE)
931 * Now that page sizes are configured in cpu_init() we can do
932 * proper page alignment for guest_base.
934 guest_base = HOST_PAGE_ALIGN(guest_base);
937 * Read in mmap_min_addr kernel parameter. This value is used
938 * When loading the ELF image to determine whether guest_base
941 * When user has explicitly set the quest base, we skip this
944 if (!have_guest_base) {
947 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
949 if (fscanf(fp, "%lu", &tmp) == 1) {
951 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
956 #endif /* CONFIG_USE_GUEST_BASE */
958 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
959 printf("Error loading %s\n", filename);
963 for (wrk = target_environ; *wrk; wrk++) {
967 free(target_environ);
969 if (qemu_log_enabled()) {
970 #if defined(CONFIG_USE_GUEST_BASE)
971 qemu_log("guest_base 0x%lx\n", guest_base);
975 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
976 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
977 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
979 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
981 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
982 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
984 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
985 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
988 target_set_brk(info->brk);
992 #if defined(CONFIG_USE_GUEST_BASE)
993 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
994 generating the prologue until now so that the prologue can take
995 the real value of GUEST_BASE into account. */
996 tcg_prologue_init(&tcg_ctx);
999 /* build Task State */
1000 memset(ts, 0, sizeof(TaskState));
1001 init_task_state(ts);
1005 #if defined(TARGET_I386)
1006 cpu_x86_set_cpl(env, 3);
1008 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
1009 env->hflags |= HF_PE_MASK;
1010 if (env->features[FEAT_1_EDX] & CPUID_SSE) {
1011 env->cr[4] |= CR4_OSFXSR_MASK;
1012 env->hflags |= HF_OSFXSR_MASK;
1014 #ifndef TARGET_ABI32
1015 /* enable 64 bit mode if possible */
1016 if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
1017 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
1020 env->cr[4] |= CR4_PAE_MASK;
1021 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
1022 env->hflags |= HF_LMA_MASK;
1025 /* flags setup : we activate the IRQs by default as in user mode */
1026 env->eflags |= IF_MASK;
1028 /* linux register setup */
1029 #ifndef TARGET_ABI32
1030 env->regs[R_EAX] = regs->rax;
1031 env->regs[R_EBX] = regs->rbx;
1032 env->regs[R_ECX] = regs->rcx;
1033 env->regs[R_EDX] = regs->rdx;
1034 env->regs[R_ESI] = regs->rsi;
1035 env->regs[R_EDI] = regs->rdi;
1036 env->regs[R_EBP] = regs->rbp;
1037 env->regs[R_ESP] = regs->rsp;
1038 env->eip = regs->rip;
1040 env->regs[R_EAX] = regs->eax;
1041 env->regs[R_EBX] = regs->ebx;
1042 env->regs[R_ECX] = regs->ecx;
1043 env->regs[R_EDX] = regs->edx;
1044 env->regs[R_ESI] = regs->esi;
1045 env->regs[R_EDI] = regs->edi;
1046 env->regs[R_EBP] = regs->ebp;
1047 env->regs[R_ESP] = regs->esp;
1048 env->eip = regs->eip;
1051 /* linux interrupt setup */
1052 #ifndef TARGET_ABI32
1053 env->idt.limit = 511;
1055 env->idt.limit = 255;
1057 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
1058 PROT_READ|PROT_WRITE,
1059 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1060 idt_table = g2h(env->idt.base);
1083 /* linux segment setup */
1085 uint64_t *gdt_table;
1086 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
1087 PROT_READ|PROT_WRITE,
1088 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1089 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
1090 gdt_table = g2h(env->gdt.base);
1092 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1093 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1094 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1096 /* 64 bit code segment */
1097 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1098 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1100 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1102 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1103 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1104 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1107 cpu_x86_load_seg(env, R_CS, __USER_CS);
1108 cpu_x86_load_seg(env, R_SS, __USER_DS);
1110 cpu_x86_load_seg(env, R_DS, __USER_DS);
1111 cpu_x86_load_seg(env, R_ES, __USER_DS);
1112 cpu_x86_load_seg(env, R_FS, __USER_DS);
1113 cpu_x86_load_seg(env, R_GS, __USER_DS);
1114 /* This hack makes Wine work... */
1115 env->segs[R_FS].selector = 0;
1117 cpu_x86_load_seg(env, R_DS, 0);
1118 cpu_x86_load_seg(env, R_ES, 0);
1119 cpu_x86_load_seg(env, R_FS, 0);
1120 cpu_x86_load_seg(env, R_GS, 0);
1122 #elif defined(TARGET_SPARC)
1126 env->npc = regs->npc;
1128 for(i = 0; i < 8; i++)
1129 env->gregs[i] = regs->u_regs[i];
1130 for(i = 0; i < 8; i++)
1131 env->regwptr[i] = regs->u_regs[i + 8];
1134 #error unsupported target CPU
1138 gdbserver_start (gdbstub_port);
1139 gdb_handlesig(cpu, 0);