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"
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;
44 unsigned long reserved_va;
47 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
48 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
49 extern char **environ;
50 enum BSDType bsd_type;
52 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
53 we allocate a bigger stack. Need a better solution, for example
54 by remapping the process stack directly at the right place */
55 unsigned long x86_stack_size = 512 * 1024;
57 void gemu_log(const char *fmt, ...)
62 vfprintf(stderr, fmt, ap);
66 #if defined(TARGET_I386)
67 int cpu_get_pic_interrupt(CPUX86State *env)
73 /* These are no-ops because we are not threadsafe. */
74 static inline void cpu_exec_start(CPUArchState *env)
78 static inline void cpu_exec_end(CPUArchState *env)
82 static inline void start_exclusive(void)
86 static inline void end_exclusive(void)
94 void fork_end(int child)
97 gdbserver_fork(thread_env);
101 void cpu_list_lock(void)
105 void cpu_list_unlock(void)
110 /***********************************************************/
111 /* CPUX86 core interface */
113 void cpu_smm_update(CPUX86State *env)
117 uint64_t cpu_get_tsc(CPUX86State *env)
119 return cpu_get_real_ticks();
122 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
127 e1 = (addr << 16) | (limit & 0xffff);
128 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
135 static uint64_t *idt_table;
137 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
138 uint64_t addr, unsigned int sel)
141 e1 = (addr & 0xffff) | (sel << 16);
142 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
146 p[2] = tswap32(addr >> 32);
149 /* only dpl matters as we do only user space emulation */
150 static void set_idt(int n, unsigned int dpl)
152 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
155 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
156 uint32_t addr, unsigned int sel)
159 e1 = (addr & 0xffff) | (sel << 16);
160 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
166 /* only dpl matters as we do only user space emulation */
167 static void set_idt(int n, unsigned int dpl)
169 set_gate(idt_table + n, 0, dpl, 0, 0);
173 void cpu_loop(CPUX86State *env)
177 //target_siginfo_t info;
180 trapnr = cpu_x86_exec(env);
183 /* syscall from int $0x80 */
184 if (bsd_type == target_freebsd) {
185 abi_ulong params = (abi_ulong) env->regs[R_ESP] +
187 int32_t syscall_nr = env->regs[R_EAX];
188 int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
190 if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
191 get_user_s32(syscall_nr, params);
192 params += sizeof(int32_t);
193 } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
194 get_user_s32(syscall_nr, params);
195 params += sizeof(int64_t);
197 get_user_s32(arg1, params);
198 params += sizeof(int32_t);
199 get_user_s32(arg2, params);
200 params += sizeof(int32_t);
201 get_user_s32(arg3, params);
202 params += sizeof(int32_t);
203 get_user_s32(arg4, params);
204 params += sizeof(int32_t);
205 get_user_s32(arg5, params);
206 params += sizeof(int32_t);
207 get_user_s32(arg6, params);
208 params += sizeof(int32_t);
209 get_user_s32(arg7, params);
210 params += sizeof(int32_t);
211 get_user_s32(arg8, params);
212 env->regs[R_EAX] = do_freebsd_syscall(env,
222 } else { //if (bsd_type == target_openbsd)
223 env->regs[R_EAX] = do_openbsd_syscall(env,
232 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
233 env->regs[R_EAX] = -env->regs[R_EAX];
236 env->eflags &= ~CC_C;
241 /* syscall from syscall instruction */
242 if (bsd_type == target_freebsd)
243 env->regs[R_EAX] = do_freebsd_syscall(env,
251 else { //if (bsd_type == target_openbsd)
252 env->regs[R_EAX] = do_openbsd_syscall(env,
261 env->eip = env->exception_next_eip;
262 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
263 env->regs[R_EAX] = -env->regs[R_EAX];
266 env->eflags &= ~CC_C;
273 info.si_signo = SIGBUS;
275 info.si_code = TARGET_SI_KERNEL;
276 info._sifields._sigfault._addr = 0;
277 queue_signal(env, info.si_signo, &info);
280 /* XXX: potential problem if ABI32 */
281 #ifndef TARGET_X86_64
282 if (env->eflags & VM_MASK) {
283 handle_vm86_fault(env);
287 info.si_signo = SIGSEGV;
289 info.si_code = TARGET_SI_KERNEL;
290 info._sifields._sigfault._addr = 0;
291 queue_signal(env, info.si_signo, &info);
295 info.si_signo = SIGSEGV;
297 if (!(env->error_code & 1))
298 info.si_code = TARGET_SEGV_MAPERR;
300 info.si_code = TARGET_SEGV_ACCERR;
301 info._sifields._sigfault._addr = env->cr[2];
302 queue_signal(env, info.si_signo, &info);
305 #ifndef TARGET_X86_64
306 if (env->eflags & VM_MASK) {
307 handle_vm86_trap(env, trapnr);
311 /* division by zero */
312 info.si_signo = SIGFPE;
314 info.si_code = TARGET_FPE_INTDIV;
315 info._sifields._sigfault._addr = env->eip;
316 queue_signal(env, info.si_signo, &info);
321 #ifndef TARGET_X86_64
322 if (env->eflags & VM_MASK) {
323 handle_vm86_trap(env, trapnr);
327 info.si_signo = SIGTRAP;
329 if (trapnr == EXCP01_DB) {
330 info.si_code = TARGET_TRAP_BRKPT;
331 info._sifields._sigfault._addr = env->eip;
333 info.si_code = TARGET_SI_KERNEL;
334 info._sifields._sigfault._addr = 0;
336 queue_signal(env, info.si_signo, &info);
341 #ifndef TARGET_X86_64
342 if (env->eflags & VM_MASK) {
343 handle_vm86_trap(env, trapnr);
347 info.si_signo = SIGSEGV;
349 info.si_code = TARGET_SI_KERNEL;
350 info._sifields._sigfault._addr = 0;
351 queue_signal(env, info.si_signo, &info);
355 info.si_signo = SIGILL;
357 info.si_code = TARGET_ILL_ILLOPN;
358 info._sifields._sigfault._addr = env->eip;
359 queue_signal(env, info.si_signo, &info);
363 /* just indicate that signals should be handled asap */
370 sig = gdb_handlesig (env, TARGET_SIGTRAP);
375 info.si_code = TARGET_TRAP_BRKPT;
376 queue_signal(env, info.si_signo, &info);
382 pc = env->segs[R_CS].base + env->eip;
383 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
387 process_pending_signals(env);
393 #define SPARC64_STACK_BIAS 2047
396 /* WARNING: dealing with register windows _is_ complicated. More info
397 can be found at http://www.sics.se/~psm/sparcstack.html */
398 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
400 index = (index + cwp * 16) % (16 * env->nwindows);
401 /* wrap handling : if cwp is on the last window, then we use the
402 registers 'after' the end */
403 if (index < 8 && env->cwp == env->nwindows - 1)
404 index += 16 * env->nwindows;
408 /* save the register window 'cwp1' */
409 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
414 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
415 #ifdef TARGET_SPARC64
417 sp_ptr += SPARC64_STACK_BIAS;
419 #if defined(DEBUG_WIN)
420 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
423 for(i = 0; i < 16; i++) {
424 /* FIXME - what to do if put_user() fails? */
425 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
426 sp_ptr += sizeof(abi_ulong);
430 static void save_window(CPUSPARCState *env)
432 #ifndef TARGET_SPARC64
433 unsigned int new_wim;
434 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
435 ((1LL << env->nwindows) - 1);
436 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
439 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
445 static void restore_window(CPUSPARCState *env)
447 #ifndef TARGET_SPARC64
448 unsigned int new_wim;
450 unsigned int i, cwp1;
453 #ifndef TARGET_SPARC64
454 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
455 ((1LL << env->nwindows) - 1);
458 /* restore the invalid window */
459 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
460 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
461 #ifdef TARGET_SPARC64
463 sp_ptr += SPARC64_STACK_BIAS;
465 #if defined(DEBUG_WIN)
466 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
469 for(i = 0; i < 16; i++) {
470 /* FIXME - what to do if get_user() fails? */
471 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
472 sp_ptr += sizeof(abi_ulong);
474 #ifdef TARGET_SPARC64
476 if (env->cleanwin < env->nwindows - 1)
484 static void flush_windows(CPUSPARCState *env)
490 /* if restore would invoke restore_window(), then we can stop */
491 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
492 #ifndef TARGET_SPARC64
493 if (env->wim & (1 << cwp1))
496 if (env->canrestore == 0)
501 save_window_offset(env, cwp1);
504 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
505 #ifndef TARGET_SPARC64
506 /* set wim so that restore will reload the registers */
507 env->wim = 1 << cwp1;
509 #if defined(DEBUG_WIN)
510 printf("flush_windows: nb=%d\n", offset - 1);
514 void cpu_loop(CPUSPARCState *env)
516 int trapnr, ret, syscall_nr;
517 //target_siginfo_t info;
520 trapnr = cpu_sparc_exec (env);
523 #ifndef TARGET_SPARC64
526 /* FreeBSD uses 0x141 for syscalls too */
528 if (bsd_type != target_freebsd)
532 syscall_nr = env->gregs[1];
533 if (bsd_type == target_freebsd)
534 ret = do_freebsd_syscall(env, syscall_nr,
535 env->regwptr[0], env->regwptr[1],
536 env->regwptr[2], env->regwptr[3],
537 env->regwptr[4], env->regwptr[5], 0, 0);
538 else if (bsd_type == target_netbsd)
539 ret = do_netbsd_syscall(env, syscall_nr,
540 env->regwptr[0], env->regwptr[1],
541 env->regwptr[2], env->regwptr[3],
542 env->regwptr[4], env->regwptr[5]);
543 else { //if (bsd_type == target_openbsd)
544 #if defined(TARGET_SPARC64)
545 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
546 TARGET_OPENBSD_SYSCALL_G2RFLAG);
548 ret = do_openbsd_syscall(env, syscall_nr,
549 env->regwptr[0], env->regwptr[1],
550 env->regwptr[2], env->regwptr[3],
551 env->regwptr[4], env->regwptr[5]);
553 if ((unsigned int)ret >= (unsigned int)(-515)) {
555 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
556 env->xcc |= PSR_CARRY;
558 env->psr |= PSR_CARRY;
561 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
562 env->xcc &= ~PSR_CARRY;
564 env->psr &= ~PSR_CARRY;
567 env->regwptr[0] = ret;
568 /* next instruction */
569 #if defined(TARGET_SPARC64)
570 if (bsd_type == target_openbsd &&
571 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
572 env->pc = env->gregs[2];
573 env->npc = env->pc + 4;
574 } else if (bsd_type == target_openbsd &&
575 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
576 env->pc = env->gregs[7];
577 env->npc = env->pc + 4;
580 env->npc = env->npc + 4;
584 env->npc = env->npc + 4;
587 case 0x83: /* flush windows */
592 /* next instruction */
594 env->npc = env->npc + 4;
596 #ifndef TARGET_SPARC64
597 case TT_WIN_OVF: /* window overflow */
600 case TT_WIN_UNF: /* window underflow */
607 info.si_signo = SIGSEGV;
609 /* XXX: check env->error_code */
610 info.si_code = TARGET_SEGV_MAPERR;
611 info._sifields._sigfault._addr = env->mmuregs[4];
612 queue_signal(env, info.si_signo, &info);
617 case TT_SPILL: /* window overflow */
620 case TT_FILL: /* window underflow */
627 info.si_signo = SIGSEGV;
629 /* XXX: check env->error_code */
630 info.si_code = TARGET_SEGV_MAPERR;
631 if (trapnr == TT_DFAULT)
632 info._sifields._sigfault._addr = env->dmmuregs[4];
634 info._sifields._sigfault._addr = env->tsptr->tpc;
635 //queue_signal(env, info.si_signo, &info);
641 /* just indicate that signals should be handled asap */
647 sig = gdb_handlesig (env, TARGET_SIGTRAP);
653 info.si_code = TARGET_TRAP_BRKPT;
654 //queue_signal(env, info.si_signo, &info);
660 #ifdef TARGET_SPARC64
663 printf ("Unhandled trap: 0x%x\n", trapnr);
664 cpu_dump_state(env, stderr, fprintf, 0);
667 process_pending_signals (env);
673 static void usage(void)
675 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
676 "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
677 "BSD CPU emulator (compiled for %s emulation)\n"
679 "Standard options:\n"
680 "-h print this help\n"
681 "-g port wait gdb connection to port\n"
682 "-L path set the elf interpreter prefix (default=%s)\n"
683 "-s size set the stack size in bytes (default=%ld)\n"
684 "-cpu model select CPU (-cpu help for list)\n"
685 "-drop-ld-preload drop LD_PRELOAD for target process\n"
686 "-E var=value sets/modifies targets environment variable(s)\n"
687 "-U var unsets targets environment variable(s)\n"
688 #if defined(CONFIG_USE_GUEST_BASE)
689 "-B address set guest_base address to address\n"
691 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
694 "-d options activate log (default logfile=%s)\n"
695 "-D logfile override default logfile location\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"
717 THREAD CPUArchState *thread_env;
719 /* Assumes contents are already zeroed. */
720 void init_task_state(TaskState *ts)
725 ts->first_free = ts->sigqueue_table;
726 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
727 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
729 ts->sigqueue_table[i].next = NULL;
732 int main(int argc, char **argv)
734 const char *filename;
735 const char *cpu_model;
736 const char *log_file = DEBUG_LOGFILE;
737 const char *log_mask = NULL;
738 struct target_pt_regs regs1, *regs = ®s1;
739 struct image_info info1, *info = &info1;
740 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 cpu_set_log_filename(log_file);
867 const CPULogItem *item;
869 mask = cpu_str_to_log_mask(log_mask);
871 printf("Log items (comma separated):\n");
872 for (item = cpu_log_items; item->mask != 0; item++) {
873 printf("%-10s %s\n", item->name, item->help);
880 if (optind >= argc) {
883 filename = argv[optind];
886 memset(regs, 0, sizeof(struct target_pt_regs));
888 /* Zero out image_info */
889 memset(info, 0, sizeof(struct image_info));
891 /* Scan interp_prefix dir for replacement files. */
892 init_paths(interp_prefix);
894 if (cpu_model == NULL) {
895 #if defined(TARGET_I386)
897 cpu_model = "qemu64";
899 cpu_model = "qemu32";
901 #elif defined(TARGET_SPARC)
902 #ifdef TARGET_SPARC64
903 cpu_model = "TI UltraSparc II";
905 cpu_model = "Fujitsu MB86904";
913 /* NOTE: we need to init the CPU at this stage to get
914 qemu_host_page_size */
915 env = cpu_init(cpu_model);
917 fprintf(stderr, "Unable to find CPU definition\n");
920 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
921 cpu_reset(ENV_GET_CPU(env));
925 if (getenv("QEMU_STRACE")) {
929 target_environ = envlist_to_environ(envlist, NULL);
930 envlist_free(envlist);
932 #if defined(CONFIG_USE_GUEST_BASE)
934 * Now that page sizes are configured in cpu_init() we can do
935 * proper page alignment for guest_base.
937 guest_base = HOST_PAGE_ALIGN(guest_base);
940 * Read in mmap_min_addr kernel parameter. This value is used
941 * When loading the ELF image to determine whether guest_base
944 * When user has explicitly set the quest base, we skip this
947 if (!have_guest_base) {
950 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
952 if (fscanf(fp, "%lu", &tmp) == 1) {
954 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
959 #endif /* CONFIG_USE_GUEST_BASE */
961 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
962 printf("Error loading %s\n", filename);
966 for (wrk = target_environ; *wrk; wrk++) {
970 free(target_environ);
972 if (qemu_log_enabled()) {
973 #if defined(CONFIG_USE_GUEST_BASE)
974 qemu_log("guest_base 0x%lx\n", guest_base);
978 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
979 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
980 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
982 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
984 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
985 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
987 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
988 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
991 target_set_brk(info->brk);
995 #if defined(CONFIG_USE_GUEST_BASE)
996 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
997 generating the prologue until now so that the prologue can take
998 the real value of GUEST_BASE into account. */
999 tcg_prologue_init(&tcg_ctx);
1002 /* build Task State */
1003 memset(ts, 0, sizeof(TaskState));
1004 init_task_state(ts);
1008 #if defined(TARGET_I386)
1009 cpu_x86_set_cpl(env, 3);
1011 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
1012 env->hflags |= HF_PE_MASK;
1013 if (env->cpuid_features & CPUID_SSE) {
1014 env->cr[4] |= CR4_OSFXSR_MASK;
1015 env->hflags |= HF_OSFXSR_MASK;
1017 #ifndef TARGET_ABI32
1018 /* enable 64 bit mode if possible */
1019 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
1020 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
1023 env->cr[4] |= CR4_PAE_MASK;
1024 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
1025 env->hflags |= HF_LMA_MASK;
1028 /* flags setup : we activate the IRQs by default as in user mode */
1029 env->eflags |= IF_MASK;
1031 /* linux register setup */
1032 #ifndef TARGET_ABI32
1033 env->regs[R_EAX] = regs->rax;
1034 env->regs[R_EBX] = regs->rbx;
1035 env->regs[R_ECX] = regs->rcx;
1036 env->regs[R_EDX] = regs->rdx;
1037 env->regs[R_ESI] = regs->rsi;
1038 env->regs[R_EDI] = regs->rdi;
1039 env->regs[R_EBP] = regs->rbp;
1040 env->regs[R_ESP] = regs->rsp;
1041 env->eip = regs->rip;
1043 env->regs[R_EAX] = regs->eax;
1044 env->regs[R_EBX] = regs->ebx;
1045 env->regs[R_ECX] = regs->ecx;
1046 env->regs[R_EDX] = regs->edx;
1047 env->regs[R_ESI] = regs->esi;
1048 env->regs[R_EDI] = regs->edi;
1049 env->regs[R_EBP] = regs->ebp;
1050 env->regs[R_ESP] = regs->esp;
1051 env->eip = regs->eip;
1054 /* linux interrupt setup */
1055 #ifndef TARGET_ABI32
1056 env->idt.limit = 511;
1058 env->idt.limit = 255;
1060 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
1061 PROT_READ|PROT_WRITE,
1062 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1063 idt_table = g2h(env->idt.base);
1086 /* linux segment setup */
1088 uint64_t *gdt_table;
1089 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
1090 PROT_READ|PROT_WRITE,
1091 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1092 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
1093 gdt_table = g2h(env->gdt.base);
1095 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1096 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1097 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1099 /* 64 bit code segment */
1100 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1101 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1103 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1105 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1106 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1107 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1110 cpu_x86_load_seg(env, R_CS, __USER_CS);
1111 cpu_x86_load_seg(env, R_SS, __USER_DS);
1113 cpu_x86_load_seg(env, R_DS, __USER_DS);
1114 cpu_x86_load_seg(env, R_ES, __USER_DS);
1115 cpu_x86_load_seg(env, R_FS, __USER_DS);
1116 cpu_x86_load_seg(env, R_GS, __USER_DS);
1117 /* This hack makes Wine work... */
1118 env->segs[R_FS].selector = 0;
1120 cpu_x86_load_seg(env, R_DS, 0);
1121 cpu_x86_load_seg(env, R_ES, 0);
1122 cpu_x86_load_seg(env, R_FS, 0);
1123 cpu_x86_load_seg(env, R_GS, 0);
1125 #elif defined(TARGET_SPARC)
1129 env->npc = regs->npc;
1131 for(i = 0; i < 8; i++)
1132 env->gregs[i] = regs->u_regs[i];
1133 for(i = 0; i < 8; i++)
1134 env->regwptr[i] = regs->u_regs[i + 8];
1137 #error unsupported target CPU
1141 gdbserver_start (gdbstub_port);
1142 gdb_handlesig(env, 0);