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"
37 #define DEBUG_LOGFILE "/tmp/qemu.log"
40 #if defined(CONFIG_USE_GUEST_BASE)
41 unsigned long mmap_min_addr;
42 unsigned long guest_base;
46 static const char *interp_prefix = CONFIG_QEMU_PREFIX;
47 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
48 extern char **environ;
49 enum BSDType bsd_type;
51 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
52 we allocate a bigger stack. Need a better solution, for example
53 by remapping the process stack directly at the right place */
54 unsigned long x86_stack_size = 512 * 1024;
56 void gemu_log(const char *fmt, ...)
61 vfprintf(stderr, fmt, ap);
65 #if defined(TARGET_I386)
66 int cpu_get_pic_interrupt(CPUState *env)
72 /* These are no-ops because we are not threadsafe. */
73 static inline void cpu_exec_start(CPUState *env)
77 static inline void cpu_exec_end(CPUState *env)
81 static inline void start_exclusive(void)
85 static inline void end_exclusive(void)
93 void fork_end(int child)
96 gdbserver_fork(thread_env);
100 void cpu_list_lock(void)
104 void cpu_list_unlock(void)
109 /***********************************************************/
110 /* CPUX86 core interface */
112 void cpu_smm_update(CPUState *env)
116 uint64_t cpu_get_tsc(CPUX86State *env)
118 return cpu_get_real_ticks();
121 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
126 e1 = (addr << 16) | (limit & 0xffff);
127 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
134 static uint64_t *idt_table;
136 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
137 uint64_t addr, unsigned int sel)
140 e1 = (addr & 0xffff) | (sel << 16);
141 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
145 p[2] = tswap32(addr >> 32);
148 /* only dpl matters as we do only user space emulation */
149 static void set_idt(int n, unsigned int dpl)
151 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
154 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
155 uint32_t addr, unsigned int sel)
158 e1 = (addr & 0xffff) | (sel << 16);
159 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
165 /* only dpl matters as we do only user space emulation */
166 static void set_idt(int n, unsigned int dpl)
168 set_gate(idt_table + n, 0, dpl, 0, 0);
172 void cpu_loop(CPUX86State *env)
176 //target_siginfo_t info;
179 trapnr = cpu_x86_exec(env);
182 /* syscall from int $0x80 */
183 if (bsd_type == target_freebsd) {
184 abi_ulong params = (abi_ulong) env->regs[R_ESP] +
186 int32_t syscall_nr = env->regs[R_EAX];
187 int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
189 if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
190 get_user_s32(syscall_nr, params);
191 params += sizeof(int32_t);
192 } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
193 get_user_s32(syscall_nr, params);
194 params += sizeof(int64_t);
196 get_user_s32(arg1, params);
197 params += sizeof(int32_t);
198 get_user_s32(arg2, params);
199 params += sizeof(int32_t);
200 get_user_s32(arg3, params);
201 params += sizeof(int32_t);
202 get_user_s32(arg4, params);
203 params += sizeof(int32_t);
204 get_user_s32(arg5, params);
205 params += sizeof(int32_t);
206 get_user_s32(arg6, params);
207 params += sizeof(int32_t);
208 get_user_s32(arg7, params);
209 params += sizeof(int32_t);
210 get_user_s32(arg8, params);
211 env->regs[R_EAX] = do_freebsd_syscall(env,
221 } else { //if (bsd_type == target_openbsd)
222 env->regs[R_EAX] = do_openbsd_syscall(env,
231 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
232 env->regs[R_EAX] = -env->regs[R_EAX];
235 env->eflags &= ~CC_C;
240 /* syscall from syscall intruction */
241 if (bsd_type == target_freebsd)
242 env->regs[R_EAX] = do_freebsd_syscall(env,
250 else { //if (bsd_type == target_openbsd)
251 env->regs[R_EAX] = do_openbsd_syscall(env,
260 env->eip = env->exception_next_eip;
261 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
262 env->regs[R_EAX] = -env->regs[R_EAX];
265 env->eflags &= ~CC_C;
272 info.si_signo = SIGBUS;
274 info.si_code = TARGET_SI_KERNEL;
275 info._sifields._sigfault._addr = 0;
276 queue_signal(env, info.si_signo, &info);
279 /* XXX: potential problem if ABI32 */
280 #ifndef TARGET_X86_64
281 if (env->eflags & VM_MASK) {
282 handle_vm86_fault(env);
286 info.si_signo = SIGSEGV;
288 info.si_code = TARGET_SI_KERNEL;
289 info._sifields._sigfault._addr = 0;
290 queue_signal(env, info.si_signo, &info);
294 info.si_signo = SIGSEGV;
296 if (!(env->error_code & 1))
297 info.si_code = TARGET_SEGV_MAPERR;
299 info.si_code = TARGET_SEGV_ACCERR;
300 info._sifields._sigfault._addr = env->cr[2];
301 queue_signal(env, info.si_signo, &info);
304 #ifndef TARGET_X86_64
305 if (env->eflags & VM_MASK) {
306 handle_vm86_trap(env, trapnr);
310 /* division by zero */
311 info.si_signo = SIGFPE;
313 info.si_code = TARGET_FPE_INTDIV;
314 info._sifields._sigfault._addr = env->eip;
315 queue_signal(env, info.si_signo, &info);
320 #ifndef TARGET_X86_64
321 if (env->eflags & VM_MASK) {
322 handle_vm86_trap(env, trapnr);
326 info.si_signo = SIGTRAP;
328 if (trapnr == EXCP01_DB) {
329 info.si_code = TARGET_TRAP_BRKPT;
330 info._sifields._sigfault._addr = env->eip;
332 info.si_code = TARGET_SI_KERNEL;
333 info._sifields._sigfault._addr = 0;
335 queue_signal(env, info.si_signo, &info);
340 #ifndef TARGET_X86_64
341 if (env->eflags & VM_MASK) {
342 handle_vm86_trap(env, trapnr);
346 info.si_signo = SIGSEGV;
348 info.si_code = TARGET_SI_KERNEL;
349 info._sifields._sigfault._addr = 0;
350 queue_signal(env, info.si_signo, &info);
354 info.si_signo = SIGILL;
356 info.si_code = TARGET_ILL_ILLOPN;
357 info._sifields._sigfault._addr = env->eip;
358 queue_signal(env, info.si_signo, &info);
362 /* just indicate that signals should be handled asap */
369 sig = gdb_handlesig (env, TARGET_SIGTRAP);
374 info.si_code = TARGET_TRAP_BRKPT;
375 queue_signal(env, info.si_signo, &info);
381 pc = env->segs[R_CS].base + env->eip;
382 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
386 process_pending_signals(env);
392 #define SPARC64_STACK_BIAS 2047
395 /* WARNING: dealing with register windows _is_ complicated. More info
396 can be found at http://www.sics.se/~psm/sparcstack.html */
397 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
399 index = (index + cwp * 16) % (16 * env->nwindows);
400 /* wrap handling : if cwp is on the last window, then we use the
401 registers 'after' the end */
402 if (index < 8 && env->cwp == env->nwindows - 1)
403 index += 16 * env->nwindows;
407 /* save the register window 'cwp1' */
408 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
413 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
414 #ifdef TARGET_SPARC64
416 sp_ptr += SPARC64_STACK_BIAS;
418 #if defined(DEBUG_WIN)
419 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
422 for(i = 0; i < 16; i++) {
423 /* FIXME - what to do if put_user() fails? */
424 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
425 sp_ptr += sizeof(abi_ulong);
429 static void save_window(CPUSPARCState *env)
431 #ifndef TARGET_SPARC64
432 unsigned int new_wim;
433 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
434 ((1LL << env->nwindows) - 1);
435 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
438 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
444 static void restore_window(CPUSPARCState *env)
446 #ifndef TARGET_SPARC64
447 unsigned int new_wim;
449 unsigned int i, cwp1;
452 #ifndef TARGET_SPARC64
453 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
454 ((1LL << env->nwindows) - 1);
457 /* restore the invalid window */
458 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
459 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
460 #ifdef TARGET_SPARC64
462 sp_ptr += SPARC64_STACK_BIAS;
464 #if defined(DEBUG_WIN)
465 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
468 for(i = 0; i < 16; i++) {
469 /* FIXME - what to do if get_user() fails? */
470 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
471 sp_ptr += sizeof(abi_ulong);
473 #ifdef TARGET_SPARC64
475 if (env->cleanwin < env->nwindows - 1)
483 static void flush_windows(CPUSPARCState *env)
489 /* if restore would invoke restore_window(), then we can stop */
490 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
491 #ifndef TARGET_SPARC64
492 if (env->wim & (1 << cwp1))
495 if (env->canrestore == 0)
500 save_window_offset(env, cwp1);
503 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
504 #ifndef TARGET_SPARC64
505 /* set wim so that restore will reload the registers */
506 env->wim = 1 << cwp1;
508 #if defined(DEBUG_WIN)
509 printf("flush_windows: nb=%d\n", offset - 1);
513 void cpu_loop(CPUSPARCState *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 (env, 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(env, stderr, fprintf, 0);
666 process_pending_signals (env);
672 static void usage(void)
674 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
675 "usage: qemu-" TARGET_ARCH " [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 ? 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 options activate log (logfile=%s)\n"
694 "-p pagesize set the host page size to 'pagesize'\n"
695 "-singlestep always run in singlestep mode\n"
696 "-strace log system calls\n"
698 "Environment variables:\n"
699 "QEMU_STRACE Print system calls and arguments similar to the\n"
700 " 'strace' program. Enable by setting to any value.\n"
701 "You can use -E and -U options to set/unset environment variables\n"
702 "for target process. It is possible to provide several variables\n"
703 "by repeating the option. For example:\n"
704 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
705 "Note that if you provide several changes to single variable\n"
706 "last change will stay in effect.\n"
715 THREAD CPUState *thread_env;
717 /* Assumes contents are already zeroed. */
718 void init_task_state(TaskState *ts)
723 ts->first_free = ts->sigqueue_table;
724 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
725 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
727 ts->sigqueue_table[i].next = NULL;
730 int main(int argc, char **argv)
732 const char *filename;
733 const char *cpu_model;
734 struct target_pt_regs regs1, *regs = ®s1;
735 struct image_info info1, *info = &info1;
736 TaskState ts1, *ts = &ts1;
740 int gdbstub_port = 0;
741 char **target_environ, **wrk;
742 envlist_t *envlist = NULL;
743 bsd_type = target_openbsd;
749 cpu_set_log_filename(DEBUG_LOGFILE);
751 if ((envlist = envlist_create()) == NULL) {
752 (void) fprintf(stderr, "Unable to allocate envlist\n");
756 /* add current environment into the list */
757 for (wrk = environ; *wrk != NULL; wrk++) {
758 (void) envlist_setenv(envlist, *wrk);
762 #if defined(cpudef_setup)
763 cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
775 if (!strcmp(r, "-")) {
777 } else if (!strcmp(r, "d")) {
779 const CPULogItem *item;
785 mask = cpu_str_to_log_mask(r);
787 printf("Log items (comma separated):\n");
788 for(item = cpu_log_items; item->mask != 0; item++) {
789 printf("%-10s %s\n", item->name, item->help);
794 } else if (!strcmp(r, "E")) {
796 if (envlist_setenv(envlist, r) != 0)
798 } else if (!strcmp(r, "U")) {
800 if (envlist_unsetenv(envlist, r) != 0)
802 } else if (!strcmp(r, "s")) {
804 x86_stack_size = strtol(r, (char **)&r, 0);
805 if (x86_stack_size <= 0)
808 x86_stack_size *= 1024 * 1024;
809 else if (*r == 'k' || *r == 'K')
810 x86_stack_size *= 1024;
811 } else if (!strcmp(r, "L")) {
812 interp_prefix = argv[optind++];
813 } else if (!strcmp(r, "p")) {
814 qemu_host_page_size = atoi(argv[optind++]);
815 if (qemu_host_page_size == 0 ||
816 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
817 fprintf(stderr, "page size must be a power of two\n");
820 } else if (!strcmp(r, "g")) {
821 gdbstub_port = atoi(argv[optind++]);
822 } else if (!strcmp(r, "r")) {
823 qemu_uname_release = argv[optind++];
824 } else if (!strcmp(r, "cpu")) {
825 cpu_model = argv[optind++];
826 if (strcmp(cpu_model, "?") == 0) {
827 /* XXX: implement xxx_cpu_list for targets that still miss it */
828 #if defined(cpu_list)
829 cpu_list(stdout, &fprintf);
833 #if defined(CONFIG_USE_GUEST_BASE)
834 } else if (!strcmp(r, "B")) {
835 guest_base = strtol(argv[optind++], NULL, 0);
838 } else if (!strcmp(r, "drop-ld-preload")) {
839 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
840 } else if (!strcmp(r, "bsd")) {
841 if (!strcasecmp(argv[optind], "freebsd")) {
842 bsd_type = target_freebsd;
843 } else if (!strcasecmp(argv[optind], "netbsd")) {
844 bsd_type = target_netbsd;
845 } else if (!strcasecmp(argv[optind], "openbsd")) {
846 bsd_type = target_openbsd;
851 } else if (!strcmp(r, "singlestep")) {
853 } else if (!strcmp(r, "strace")) {
862 filename = argv[optind];
865 memset(regs, 0, sizeof(struct target_pt_regs));
867 /* Zero out image_info */
868 memset(info, 0, sizeof(struct image_info));
870 /* Scan interp_prefix dir for replacement files. */
871 init_paths(interp_prefix);
873 if (cpu_model == NULL) {
874 #if defined(TARGET_I386)
876 cpu_model = "qemu64";
878 cpu_model = "qemu32";
880 #elif defined(TARGET_SPARC)
881 #ifdef TARGET_SPARC64
882 cpu_model = "TI UltraSparc II";
884 cpu_model = "Fujitsu MB86904";
890 cpu_exec_init_all(0);
891 /* NOTE: we need to init the CPU at this stage to get
892 qemu_host_page_size */
893 env = cpu_init(cpu_model);
895 fprintf(stderr, "Unable to find CPU definition\n");
898 #if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
903 if (getenv("QEMU_STRACE")) {
907 target_environ = envlist_to_environ(envlist, NULL);
908 envlist_free(envlist);
910 #if defined(CONFIG_USE_GUEST_BASE)
912 * Now that page sizes are configured in cpu_init() we can do
913 * proper page alignment for guest_base.
915 guest_base = HOST_PAGE_ALIGN(guest_base);
918 * Read in mmap_min_addr kernel parameter. This value is used
919 * When loading the ELF image to determine whether guest_base
922 * When user has explicitly set the quest base, we skip this
925 if (!have_guest_base) {
928 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
930 if (fscanf(fp, "%lu", &tmp) == 1) {
932 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
937 #endif /* CONFIG_USE_GUEST_BASE */
939 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
940 printf("Error loading %s\n", filename);
944 for (wrk = target_environ; *wrk; wrk++) {
948 free(target_environ);
950 if (qemu_log_enabled()) {
951 #if defined(CONFIG_USE_GUEST_BASE)
952 qemu_log("guest_base 0x%lx\n", guest_base);
956 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
957 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
958 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
960 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
962 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
963 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
965 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
966 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
969 target_set_brk(info->brk);
973 #if defined(CONFIG_USE_GUEST_BASE)
974 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
975 generating the prologue until now so that the prologue can take
976 the real value of GUEST_BASE into account. */
977 tcg_prologue_init(&tcg_ctx);
980 /* build Task State */
981 memset(ts, 0, sizeof(TaskState));
986 #if defined(TARGET_I386)
987 cpu_x86_set_cpl(env, 3);
989 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
990 env->hflags |= HF_PE_MASK;
991 if (env->cpuid_features & CPUID_SSE) {
992 env->cr[4] |= CR4_OSFXSR_MASK;
993 env->hflags |= HF_OSFXSR_MASK;
996 /* enable 64 bit mode if possible */
997 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
998 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
1001 env->cr[4] |= CR4_PAE_MASK;
1002 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
1003 env->hflags |= HF_LMA_MASK;
1006 /* flags setup : we activate the IRQs by default as in user mode */
1007 env->eflags |= IF_MASK;
1009 /* linux register setup */
1010 #ifndef TARGET_ABI32
1011 env->regs[R_EAX] = regs->rax;
1012 env->regs[R_EBX] = regs->rbx;
1013 env->regs[R_ECX] = regs->rcx;
1014 env->regs[R_EDX] = regs->rdx;
1015 env->regs[R_ESI] = regs->rsi;
1016 env->regs[R_EDI] = regs->rdi;
1017 env->regs[R_EBP] = regs->rbp;
1018 env->regs[R_ESP] = regs->rsp;
1019 env->eip = regs->rip;
1021 env->regs[R_EAX] = regs->eax;
1022 env->regs[R_EBX] = regs->ebx;
1023 env->regs[R_ECX] = regs->ecx;
1024 env->regs[R_EDX] = regs->edx;
1025 env->regs[R_ESI] = regs->esi;
1026 env->regs[R_EDI] = regs->edi;
1027 env->regs[R_EBP] = regs->ebp;
1028 env->regs[R_ESP] = regs->esp;
1029 env->eip = regs->eip;
1032 /* linux interrupt setup */
1033 #ifndef TARGET_ABI32
1034 env->idt.limit = 511;
1036 env->idt.limit = 255;
1038 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
1039 PROT_READ|PROT_WRITE,
1040 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1041 idt_table = g2h(env->idt.base);
1064 /* linux segment setup */
1066 uint64_t *gdt_table;
1067 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
1068 PROT_READ|PROT_WRITE,
1069 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1070 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
1071 gdt_table = g2h(env->gdt.base);
1073 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1074 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1075 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1077 /* 64 bit code segment */
1078 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1079 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1081 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1083 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1084 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1085 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1088 cpu_x86_load_seg(env, R_CS, __USER_CS);
1089 cpu_x86_load_seg(env, R_SS, __USER_DS);
1091 cpu_x86_load_seg(env, R_DS, __USER_DS);
1092 cpu_x86_load_seg(env, R_ES, __USER_DS);
1093 cpu_x86_load_seg(env, R_FS, __USER_DS);
1094 cpu_x86_load_seg(env, R_GS, __USER_DS);
1095 /* This hack makes Wine work... */
1096 env->segs[R_FS].selector = 0;
1098 cpu_x86_load_seg(env, R_DS, 0);
1099 cpu_x86_load_seg(env, R_ES, 0);
1100 cpu_x86_load_seg(env, R_FS, 0);
1101 cpu_x86_load_seg(env, R_GS, 0);
1103 #elif defined(TARGET_SPARC)
1107 env->npc = regs->npc;
1109 for(i = 0; i < 8; i++)
1110 env->gregs[i] = regs->u_regs[i];
1111 for(i = 0; i < 8; i++)
1112 env->regwptr[i] = regs->u_regs[i + 8];
1115 #error unsupported target CPU
1119 gdbserver_start (gdbstub_port);
1120 gdb_handlesig(env, 0);