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/>.
20 #include "qemu/osdep.h"
21 #include "qemu/units.h"
22 #include "sysemu/tcg.h"
23 #include "qemu-version.h"
24 #include <machine/trap.h>
26 #include "qapi/error.h"
28 #include "qemu/config-file.h"
29 #include "qemu/error-report.h"
30 #include "qemu/path.h"
31 #include "qemu/help_option.h"
32 #include "qemu/module.h"
34 #include "exec/exec-all.h"
36 #include "qemu/timer.h"
37 #include "qemu/envlist.h"
39 #include "trace/control.h"
42 unsigned long mmap_min_addr;
43 unsigned long guest_base;
45 unsigned long reserved_va;
47 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
48 const char *qemu_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)
77 void fork_end(int child)
80 gdbserver_fork(thread_cpu);
85 /***********************************************************/
86 /* CPUX86 core interface */
88 uint64_t cpu_get_tsc(CPUX86State *env)
90 return cpu_get_host_ticks();
93 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
98 e1 = (addr << 16) | (limit & 0xffff);
99 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
106 static uint64_t *idt_table;
108 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
109 uint64_t addr, unsigned int sel)
112 e1 = (addr & 0xffff) | (sel << 16);
113 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
117 p[2] = tswap32(addr >> 32);
120 /* only dpl matters as we do only user space emulation */
121 static void set_idt(int n, unsigned int dpl)
123 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
126 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
127 uint32_t addr, unsigned int sel)
130 e1 = (addr & 0xffff) | (sel << 16);
131 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
137 /* only dpl matters as we do only user space emulation */
138 static void set_idt(int n, unsigned int dpl)
140 set_gate(idt_table + n, 0, dpl, 0, 0);
144 void cpu_loop(CPUX86State *env)
146 CPUState *cs = env_cpu(env);
149 //target_siginfo_t info;
153 trapnr = cpu_exec(cs);
155 process_queued_cpu_work(cs);
159 /* syscall from int $0x80 */
160 if (bsd_type == target_freebsd) {
161 abi_ulong params = (abi_ulong) env->regs[R_ESP] +
163 int32_t syscall_nr = env->regs[R_EAX];
164 int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
166 if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
167 get_user_s32(syscall_nr, params);
168 params += sizeof(int32_t);
169 } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
170 get_user_s32(syscall_nr, params);
171 params += sizeof(int64_t);
173 get_user_s32(arg1, params);
174 params += sizeof(int32_t);
175 get_user_s32(arg2, params);
176 params += sizeof(int32_t);
177 get_user_s32(arg3, params);
178 params += sizeof(int32_t);
179 get_user_s32(arg4, params);
180 params += sizeof(int32_t);
181 get_user_s32(arg5, params);
182 params += sizeof(int32_t);
183 get_user_s32(arg6, params);
184 params += sizeof(int32_t);
185 get_user_s32(arg7, params);
186 params += sizeof(int32_t);
187 get_user_s32(arg8, params);
188 env->regs[R_EAX] = do_freebsd_syscall(env,
198 } else { //if (bsd_type == target_openbsd)
199 env->regs[R_EAX] = do_openbsd_syscall(env,
208 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
209 env->regs[R_EAX] = -env->regs[R_EAX];
212 env->eflags &= ~CC_C;
217 /* syscall from syscall instruction */
218 if (bsd_type == target_freebsd)
219 env->regs[R_EAX] = do_freebsd_syscall(env,
227 else { //if (bsd_type == target_openbsd)
228 env->regs[R_EAX] = do_openbsd_syscall(env,
237 env->eip = env->exception_next_eip;
238 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
239 env->regs[R_EAX] = -env->regs[R_EAX];
242 env->eflags &= ~CC_C;
249 info.si_signo = SIGBUS;
251 info.si_code = TARGET_SI_KERNEL;
252 info._sifields._sigfault._addr = 0;
253 queue_signal(env, info.si_signo, &info);
256 /* XXX: potential problem if ABI32 */
257 #ifndef TARGET_X86_64
258 if (env->eflags & VM_MASK) {
259 handle_vm86_fault(env);
263 info.si_signo = SIGSEGV;
265 info.si_code = TARGET_SI_KERNEL;
266 info._sifields._sigfault._addr = 0;
267 queue_signal(env, info.si_signo, &info);
271 info.si_signo = SIGSEGV;
273 if (!(env->error_code & 1))
274 info.si_code = TARGET_SEGV_MAPERR;
276 info.si_code = TARGET_SEGV_ACCERR;
277 info._sifields._sigfault._addr = env->cr[2];
278 queue_signal(env, info.si_signo, &info);
281 #ifndef TARGET_X86_64
282 if (env->eflags & VM_MASK) {
283 handle_vm86_trap(env, trapnr);
287 /* division by zero */
288 info.si_signo = SIGFPE;
290 info.si_code = TARGET_FPE_INTDIV;
291 info._sifields._sigfault._addr = env->eip;
292 queue_signal(env, info.si_signo, &info);
297 #ifndef TARGET_X86_64
298 if (env->eflags & VM_MASK) {
299 handle_vm86_trap(env, trapnr);
303 info.si_signo = SIGTRAP;
305 if (trapnr == EXCP01_DB) {
306 info.si_code = TARGET_TRAP_BRKPT;
307 info._sifields._sigfault._addr = env->eip;
309 info.si_code = TARGET_SI_KERNEL;
310 info._sifields._sigfault._addr = 0;
312 queue_signal(env, info.si_signo, &info);
317 #ifndef TARGET_X86_64
318 if (env->eflags & VM_MASK) {
319 handle_vm86_trap(env, trapnr);
323 info.si_signo = SIGSEGV;
325 info.si_code = TARGET_SI_KERNEL;
326 info._sifields._sigfault._addr = 0;
327 queue_signal(env, info.si_signo, &info);
331 info.si_signo = SIGILL;
333 info.si_code = TARGET_ILL_ILLOPN;
334 info._sifields._sigfault._addr = env->eip;
335 queue_signal(env, info.si_signo, &info);
339 /* just indicate that signals should be handled asap */
346 sig = gdb_handlesig (env, TARGET_SIGTRAP);
351 info.si_code = TARGET_TRAP_BRKPT;
352 queue_signal(env, info.si_signo, &info);
358 pc = env->segs[R_CS].base + env->eip;
359 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
363 process_pending_signals(env);
369 #define SPARC64_STACK_BIAS 2047
372 /* WARNING: dealing with register windows _is_ complicated. More info
373 can be found at http://www.sics.se/~psm/sparcstack.html */
374 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
376 index = (index + cwp * 16) % (16 * env->nwindows);
377 /* wrap handling : if cwp is on the last window, then we use the
378 registers 'after' the end */
379 if (index < 8 && env->cwp == env->nwindows - 1)
380 index += 16 * env->nwindows;
384 /* save the register window 'cwp1' */
385 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
390 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
391 #ifdef TARGET_SPARC64
393 sp_ptr += SPARC64_STACK_BIAS;
395 #if defined(DEBUG_WIN)
396 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
399 for(i = 0; i < 16; i++) {
400 /* FIXME - what to do if put_user() fails? */
401 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
402 sp_ptr += sizeof(abi_ulong);
406 static void save_window(CPUSPARCState *env)
408 #ifndef TARGET_SPARC64
409 unsigned int new_wim;
410 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
411 ((1LL << env->nwindows) - 1);
412 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
415 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
421 static void restore_window(CPUSPARCState *env)
423 #ifndef TARGET_SPARC64
424 unsigned int new_wim;
426 unsigned int i, cwp1;
429 #ifndef TARGET_SPARC64
430 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
431 ((1LL << env->nwindows) - 1);
434 /* restore the invalid window */
435 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
436 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
437 #ifdef TARGET_SPARC64
439 sp_ptr += SPARC64_STACK_BIAS;
441 #if defined(DEBUG_WIN)
442 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
445 for(i = 0; i < 16; i++) {
446 /* FIXME - what to do if get_user() fails? */
447 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
448 sp_ptr += sizeof(abi_ulong);
450 #ifdef TARGET_SPARC64
452 if (env->cleanwin < env->nwindows - 1)
460 static void flush_windows(CPUSPARCState *env)
466 /* if restore would invoke restore_window(), then we can stop */
467 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
468 #ifndef TARGET_SPARC64
469 if (env->wim & (1 << cwp1))
472 if (env->canrestore == 0)
477 save_window_offset(env, cwp1);
480 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
481 #ifndef TARGET_SPARC64
482 /* set wim so that restore will reload the registers */
483 env->wim = 1 << cwp1;
485 #if defined(DEBUG_WIN)
486 printf("flush_windows: nb=%d\n", offset - 1);
490 void cpu_loop(CPUSPARCState *env)
492 CPUState *cs = env_cpu(env);
493 int trapnr, ret, syscall_nr;
494 //target_siginfo_t info;
498 trapnr = cpu_exec(cs);
500 process_queued_cpu_work(cs);
503 #ifndef TARGET_SPARC64
506 /* FreeBSD uses 0x141 for syscalls too */
508 if (bsd_type != target_freebsd)
512 syscall_nr = env->gregs[1];
513 if (bsd_type == target_freebsd)
514 ret = do_freebsd_syscall(env, syscall_nr,
515 env->regwptr[0], env->regwptr[1],
516 env->regwptr[2], env->regwptr[3],
517 env->regwptr[4], env->regwptr[5], 0, 0);
518 else if (bsd_type == target_netbsd)
519 ret = do_netbsd_syscall(env, syscall_nr,
520 env->regwptr[0], env->regwptr[1],
521 env->regwptr[2], env->regwptr[3],
522 env->regwptr[4], env->regwptr[5]);
523 else { //if (bsd_type == target_openbsd)
524 #if defined(TARGET_SPARC64)
525 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
526 TARGET_OPENBSD_SYSCALL_G2RFLAG);
528 ret = do_openbsd_syscall(env, syscall_nr,
529 env->regwptr[0], env->regwptr[1],
530 env->regwptr[2], env->regwptr[3],
531 env->regwptr[4], env->regwptr[5]);
533 if ((unsigned int)ret >= (unsigned int)(-515)) {
535 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
536 env->xcc |= PSR_CARRY;
538 env->psr |= PSR_CARRY;
541 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
542 env->xcc &= ~PSR_CARRY;
544 env->psr &= ~PSR_CARRY;
547 env->regwptr[0] = ret;
548 /* next instruction */
549 #if defined(TARGET_SPARC64)
550 if (bsd_type == target_openbsd &&
551 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
552 env->pc = env->gregs[2];
553 env->npc = env->pc + 4;
554 } else if (bsd_type == target_openbsd &&
555 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
556 env->pc = env->gregs[7];
557 env->npc = env->pc + 4;
560 env->npc = env->npc + 4;
564 env->npc = env->npc + 4;
567 case 0x83: /* flush windows */
572 /* next instruction */
574 env->npc = env->npc + 4;
576 #ifndef TARGET_SPARC64
577 case TT_WIN_OVF: /* window overflow */
580 case TT_WIN_UNF: /* window underflow */
587 info.si_signo = SIGSEGV;
589 /* XXX: check env->error_code */
590 info.si_code = TARGET_SEGV_MAPERR;
591 info._sifields._sigfault._addr = env->mmuregs[4];
592 queue_signal(env, info.si_signo, &info);
597 case TT_SPILL: /* window overflow */
600 case TT_FILL: /* window underflow */
607 info.si_signo = SIGSEGV;
609 /* XXX: check env->error_code */
610 info.si_code = TARGET_SEGV_MAPERR;
611 if (trapnr == TT_DFAULT)
612 info._sifields._sigfault._addr = env->dmmuregs[4];
614 info._sifields._sigfault._addr = env->tsptr->tpc;
615 //queue_signal(env, info.si_signo, &info);
621 /* just indicate that signals should be handled asap */
628 gdb_handlesig(cs, TARGET_SIGTRAP);
634 info.si_code = TARGET_TRAP_BRKPT;
635 //queue_signal(env, info.si_signo, &info);
641 #ifdef TARGET_SPARC64
644 printf ("Unhandled trap: 0x%x\n", trapnr);
645 cpu_dump_state(cs, stderr, 0);
648 process_pending_signals (env);
654 static void usage(void)
656 printf("qemu-" TARGET_NAME " version " QEMU_FULL_VERSION
657 "\n" QEMU_COPYRIGHT "\n"
658 "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
659 "BSD CPU emulator (compiled for %s emulation)\n"
661 "Standard options:\n"
662 "-h print this help\n"
663 "-g port wait gdb connection to port\n"
664 "-L path set the elf interpreter prefix (default=%s)\n"
665 "-s size set the stack size in bytes (default=%ld)\n"
666 "-cpu model select CPU (-cpu help for list)\n"
667 "-drop-ld-preload drop LD_PRELOAD for target process\n"
668 "-E var=value sets/modifies targets environment variable(s)\n"
669 "-U var unsets targets environment variable(s)\n"
670 "-B address set guest_base address to address\n"
671 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
674 "-d item1[,...] enable logging of specified items\n"
675 " (use '-d help' for a list of log items)\n"
676 "-D logfile write logs to 'logfile' (default stderr)\n"
677 "-p pagesize set the host page size to 'pagesize'\n"
678 "-singlestep always run in singlestep mode\n"
679 "-strace log system calls\n"
680 "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
681 " specify tracing options\n"
683 "Environment variables:\n"
684 "QEMU_STRACE Print system calls and arguments similar to the\n"
685 " 'strace' program. Enable by setting to any value.\n"
686 "You can use -E and -U options to set/unset environment variables\n"
687 "for target process. It is possible to provide several variables\n"
688 "by repeating the option. For example:\n"
689 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
690 "Note that if you provide several changes to single variable\n"
691 "last change will stay in effect.\n"
693 QEMU_HELP_BOTTOM "\n"
701 THREAD CPUState *thread_cpu;
703 bool qemu_cpu_is_self(CPUState *cpu)
705 return thread_cpu == cpu;
708 void qemu_cpu_kick(CPUState *cpu)
713 /* Assumes contents are already zeroed. */
714 void init_task_state(TaskState *ts)
719 ts->first_free = ts->sigqueue_table;
720 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
721 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
723 ts->sigqueue_table[i].next = NULL;
726 int main(int argc, char **argv)
728 const char *filename;
729 const char *cpu_model;
730 const char *cpu_type;
731 const char *log_file = NULL;
732 const char *log_mask = NULL;
733 struct target_pt_regs regs1, *regs = ®s1;
734 struct image_info info1, *info = &info1;
735 TaskState ts1, *ts = &ts1;
740 int gdbstub_port = 0;
741 char **target_environ, **wrk;
742 envlist_t *envlist = NULL;
743 char *trace_file = NULL;
744 bsd_type = target_openbsd;
750 module_call_init(MODULE_INIT_TRACE);
751 qemu_init_cpu_list();
752 module_call_init(MODULE_INIT_QOM);
754 envlist = envlist_create();
756 /* add current environment into the list */
757 for (wrk = environ; *wrk != NULL; wrk++) {
758 (void) envlist_setenv(envlist, *wrk);
763 qemu_add_opts(&qemu_trace_opts);
774 if (!strcmp(r, "-")) {
776 } else if (!strcmp(r, "d")) {
777 if (optind >= argc) {
780 log_mask = argv[optind++];
781 } else if (!strcmp(r, "D")) {
782 if (optind >= argc) {
785 log_file = argv[optind++];
786 } else if (!strcmp(r, "E")) {
788 if (envlist_setenv(envlist, r) != 0)
790 } else if (!strcmp(r, "ignore-environment")) {
791 envlist_free(envlist);
792 envlist = envlist_create();
793 } else if (!strcmp(r, "U")) {
795 if (envlist_unsetenv(envlist, r) != 0)
797 } else if (!strcmp(r, "s")) {
799 x86_stack_size = strtol(r, (char **)&r, 0);
800 if (x86_stack_size <= 0)
803 x86_stack_size *= MiB;
804 else if (*r == 'k' || *r == 'K')
805 x86_stack_size *= KiB;
806 } else if (!strcmp(r, "L")) {
807 interp_prefix = argv[optind++];
808 } else if (!strcmp(r, "p")) {
809 qemu_host_page_size = atoi(argv[optind++]);
810 if (qemu_host_page_size == 0 ||
811 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
812 fprintf(stderr, "page size must be a power of two\n");
815 } else if (!strcmp(r, "g")) {
816 gdbstub_port = atoi(argv[optind++]);
817 } else if (!strcmp(r, "r")) {
818 qemu_uname_release = argv[optind++];
819 } else if (!strcmp(r, "cpu")) {
820 cpu_model = argv[optind++];
821 if (is_help_option(cpu_model)) {
822 /* XXX: implement xxx_cpu_list for targets that still miss it */
823 #if defined(cpu_list)
828 } else if (!strcmp(r, "B")) {
829 guest_base = strtol(argv[optind++], NULL, 0);
831 } else if (!strcmp(r, "drop-ld-preload")) {
832 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
833 } else if (!strcmp(r, "bsd")) {
834 if (!strcasecmp(argv[optind], "freebsd")) {
835 bsd_type = target_freebsd;
836 } else if (!strcasecmp(argv[optind], "netbsd")) {
837 bsd_type = target_netbsd;
838 } else if (!strcasecmp(argv[optind], "openbsd")) {
839 bsd_type = target_openbsd;
844 } else if (!strcmp(r, "singlestep")) {
846 } else if (!strcmp(r, "strace")) {
848 } else if (!strcmp(r, "trace")) {
850 trace_file = trace_opt_parse(optarg);
857 qemu_log_needs_buffers();
858 qemu_set_log_filename(log_file, &error_fatal);
862 mask = qemu_str_to_log_mask(log_mask);
864 qemu_print_log_usage(stdout);
870 if (optind >= argc) {
873 filename = argv[optind];
875 if (!trace_init_backends()) {
878 trace_init_file(trace_file);
881 memset(regs, 0, sizeof(struct target_pt_regs));
883 /* Zero out image_info */
884 memset(info, 0, sizeof(struct image_info));
886 /* Scan interp_prefix dir for replacement files. */
887 init_paths(interp_prefix);
889 if (cpu_model == NULL) {
890 #if defined(TARGET_I386)
892 cpu_model = "qemu64";
894 cpu_model = "qemu32";
896 #elif defined(TARGET_SPARC)
897 #ifdef TARGET_SPARC64
898 cpu_model = "TI UltraSparc II";
900 cpu_model = "Fujitsu MB86904";
907 /* init tcg before creating CPUs and to get qemu_host_page_size */
910 cpu_type = parse_cpu_option(cpu_model);
911 cpu = cpu_create(cpu_type);
913 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
918 if (getenv("QEMU_STRACE")) {
922 target_environ = envlist_to_environ(envlist, NULL);
923 envlist_free(envlist);
926 * Now that page sizes are configured in tcg_exec_init() we can do
927 * proper page alignment for guest_base.
929 guest_base = HOST_PAGE_ALIGN(guest_base);
932 * Read in mmap_min_addr kernel parameter. This value is used
933 * When loading the ELF image to determine whether guest_base
936 * When user has explicitly set the quest base, we skip this
939 if (!have_guest_base) {
942 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
944 if (fscanf(fp, "%lu", &tmp) == 1) {
946 qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr);
952 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
953 printf("Error loading %s\n", filename);
957 for (wrk = target_environ; *wrk; wrk++) {
961 g_free(target_environ);
963 if (qemu_loglevel_mask(CPU_LOG_PAGE)) {
964 qemu_log("guest_base 0x%lx\n", guest_base);
967 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
968 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
969 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
971 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
973 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
974 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
976 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
977 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
980 target_set_brk(info->brk);
984 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
985 generating the prologue until now so that the prologue can take
986 the real value of GUEST_BASE into account. */
987 tcg_prologue_init(tcg_ctx);
990 /* build Task State */
991 memset(ts, 0, sizeof(TaskState));
996 #if defined(TARGET_I386)
997 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
998 env->hflags |= HF_PE_MASK | HF_CPL_MASK;
999 if (env->features[FEAT_1_EDX] & CPUID_SSE) {
1000 env->cr[4] |= CR4_OSFXSR_MASK;
1001 env->hflags |= HF_OSFXSR_MASK;
1003 #ifndef TARGET_ABI32
1004 /* enable 64 bit mode if possible */
1005 if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
1006 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
1009 env->cr[4] |= CR4_PAE_MASK;
1010 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
1011 env->hflags |= HF_LMA_MASK;
1014 /* flags setup : we activate the IRQs by default as in user mode */
1015 env->eflags |= IF_MASK;
1017 /* linux register setup */
1018 #ifndef TARGET_ABI32
1019 env->regs[R_EAX] = regs->rax;
1020 env->regs[R_EBX] = regs->rbx;
1021 env->regs[R_ECX] = regs->rcx;
1022 env->regs[R_EDX] = regs->rdx;
1023 env->regs[R_ESI] = regs->rsi;
1024 env->regs[R_EDI] = regs->rdi;
1025 env->regs[R_EBP] = regs->rbp;
1026 env->regs[R_ESP] = regs->rsp;
1027 env->eip = regs->rip;
1029 env->regs[R_EAX] = regs->eax;
1030 env->regs[R_EBX] = regs->ebx;
1031 env->regs[R_ECX] = regs->ecx;
1032 env->regs[R_EDX] = regs->edx;
1033 env->regs[R_ESI] = regs->esi;
1034 env->regs[R_EDI] = regs->edi;
1035 env->regs[R_EBP] = regs->ebp;
1036 env->regs[R_ESP] = regs->esp;
1037 env->eip = regs->eip;
1040 /* linux interrupt setup */
1041 #ifndef TARGET_ABI32
1042 env->idt.limit = 511;
1044 env->idt.limit = 255;
1046 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
1047 PROT_READ|PROT_WRITE,
1048 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1049 idt_table = g2h(env->idt.base);
1072 /* linux segment setup */
1074 uint64_t *gdt_table;
1075 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
1076 PROT_READ|PROT_WRITE,
1077 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1078 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
1079 gdt_table = g2h(env->gdt.base);
1081 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1082 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1083 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1085 /* 64 bit code segment */
1086 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1087 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1089 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1091 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1092 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1093 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1096 cpu_x86_load_seg(env, R_CS, __USER_CS);
1097 cpu_x86_load_seg(env, R_SS, __USER_DS);
1099 cpu_x86_load_seg(env, R_DS, __USER_DS);
1100 cpu_x86_load_seg(env, R_ES, __USER_DS);
1101 cpu_x86_load_seg(env, R_FS, __USER_DS);
1102 cpu_x86_load_seg(env, R_GS, __USER_DS);
1103 /* This hack makes Wine work... */
1104 env->segs[R_FS].selector = 0;
1106 cpu_x86_load_seg(env, R_DS, 0);
1107 cpu_x86_load_seg(env, R_ES, 0);
1108 cpu_x86_load_seg(env, R_FS, 0);
1109 cpu_x86_load_seg(env, R_GS, 0);
1111 #elif defined(TARGET_SPARC)
1115 env->npc = regs->npc;
1117 for(i = 0; i < 8; i++)
1118 env->gregs[i] = regs->u_regs[i];
1119 for(i = 0; i < 8; i++)
1120 env->regwptr[i] = regs->u_regs[i + 8];
1123 #error unsupported target CPU
1127 gdbserver_start (gdbstub_port);
1128 gdb_handlesig(cpu, 0);