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/>.
19 #include "qemu/osdep.h"
20 #include "qemu-version.h"
21 #include <machine/trap.h>
23 #include "qapi/error.h"
25 #include "qemu/config-file.h"
26 #include "qemu/path.h"
27 #include "qemu/help_option.h"
30 #include "exec/exec-all.h"
32 #include "qemu/timer.h"
33 #include "qemu/envlist.h"
35 #include "trace/control.h"
36 #include "glib-compat.h"
39 unsigned long mmap_min_addr;
40 unsigned long guest_base;
42 unsigned long reserved_va;
44 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
45 const char *qemu_uname_release;
46 extern char **environ;
47 enum BSDType bsd_type;
49 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
50 we allocate a bigger stack. Need a better solution, for example
51 by remapping the process stack directly at the right place */
52 unsigned long x86_stack_size = 512 * 1024;
54 void gemu_log(const char *fmt, ...)
59 vfprintf(stderr, fmt, ap);
63 #if defined(TARGET_I386)
64 int cpu_get_pic_interrupt(CPUX86State *env)
74 void fork_end(int child)
77 gdbserver_fork(thread_cpu);
82 /***********************************************************/
83 /* CPUX86 core interface */
85 uint64_t cpu_get_tsc(CPUX86State *env)
87 return cpu_get_host_ticks();
90 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
95 e1 = (addr << 16) | (limit & 0xffff);
96 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
103 static uint64_t *idt_table;
105 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
106 uint64_t addr, unsigned int sel)
109 e1 = (addr & 0xffff) | (sel << 16);
110 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
114 p[2] = tswap32(addr >> 32);
117 /* only dpl matters as we do only user space emulation */
118 static void set_idt(int n, unsigned int dpl)
120 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
123 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
124 uint32_t addr, unsigned int sel)
127 e1 = (addr & 0xffff) | (sel << 16);
128 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
134 /* only dpl matters as we do only user space emulation */
135 static void set_idt(int n, unsigned int dpl)
137 set_gate(idt_table + n, 0, dpl, 0, 0);
141 void cpu_loop(CPUX86State *env)
143 X86CPU *cpu = x86_env_get_cpu(env);
144 CPUState *cs = CPU(cpu);
147 //target_siginfo_t info;
151 trapnr = cpu_exec(cs);
153 process_queued_cpu_work(cs);
157 /* syscall from int $0x80 */
158 if (bsd_type == target_freebsd) {
159 abi_ulong params = (abi_ulong) env->regs[R_ESP] +
161 int32_t syscall_nr = env->regs[R_EAX];
162 int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
164 if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
165 get_user_s32(syscall_nr, params);
166 params += sizeof(int32_t);
167 } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
168 get_user_s32(syscall_nr, params);
169 params += sizeof(int64_t);
171 get_user_s32(arg1, params);
172 params += sizeof(int32_t);
173 get_user_s32(arg2, params);
174 params += sizeof(int32_t);
175 get_user_s32(arg3, params);
176 params += sizeof(int32_t);
177 get_user_s32(arg4, params);
178 params += sizeof(int32_t);
179 get_user_s32(arg5, params);
180 params += sizeof(int32_t);
181 get_user_s32(arg6, params);
182 params += sizeof(int32_t);
183 get_user_s32(arg7, params);
184 params += sizeof(int32_t);
185 get_user_s32(arg8, params);
186 env->regs[R_EAX] = do_freebsd_syscall(env,
196 } else { //if (bsd_type == target_openbsd)
197 env->regs[R_EAX] = do_openbsd_syscall(env,
206 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
207 env->regs[R_EAX] = -env->regs[R_EAX];
210 env->eflags &= ~CC_C;
215 /* syscall from syscall instruction */
216 if (bsd_type == target_freebsd)
217 env->regs[R_EAX] = do_freebsd_syscall(env,
225 else { //if (bsd_type == target_openbsd)
226 env->regs[R_EAX] = do_openbsd_syscall(env,
235 env->eip = env->exception_next_eip;
236 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
237 env->regs[R_EAX] = -env->regs[R_EAX];
240 env->eflags &= ~CC_C;
247 info.si_signo = SIGBUS;
249 info.si_code = TARGET_SI_KERNEL;
250 info._sifields._sigfault._addr = 0;
251 queue_signal(env, info.si_signo, &info);
254 /* XXX: potential problem if ABI32 */
255 #ifndef TARGET_X86_64
256 if (env->eflags & VM_MASK) {
257 handle_vm86_fault(env);
261 info.si_signo = SIGSEGV;
263 info.si_code = TARGET_SI_KERNEL;
264 info._sifields._sigfault._addr = 0;
265 queue_signal(env, info.si_signo, &info);
269 info.si_signo = SIGSEGV;
271 if (!(env->error_code & 1))
272 info.si_code = TARGET_SEGV_MAPERR;
274 info.si_code = TARGET_SEGV_ACCERR;
275 info._sifields._sigfault._addr = env->cr[2];
276 queue_signal(env, info.si_signo, &info);
279 #ifndef TARGET_X86_64
280 if (env->eflags & VM_MASK) {
281 handle_vm86_trap(env, trapnr);
285 /* division by zero */
286 info.si_signo = SIGFPE;
288 info.si_code = TARGET_FPE_INTDIV;
289 info._sifields._sigfault._addr = env->eip;
290 queue_signal(env, info.si_signo, &info);
295 #ifndef TARGET_X86_64
296 if (env->eflags & VM_MASK) {
297 handle_vm86_trap(env, trapnr);
301 info.si_signo = SIGTRAP;
303 if (trapnr == EXCP01_DB) {
304 info.si_code = TARGET_TRAP_BRKPT;
305 info._sifields._sigfault._addr = env->eip;
307 info.si_code = TARGET_SI_KERNEL;
308 info._sifields._sigfault._addr = 0;
310 queue_signal(env, info.si_signo, &info);
315 #ifndef TARGET_X86_64
316 if (env->eflags & VM_MASK) {
317 handle_vm86_trap(env, trapnr);
321 info.si_signo = SIGSEGV;
323 info.si_code = TARGET_SI_KERNEL;
324 info._sifields._sigfault._addr = 0;
325 queue_signal(env, info.si_signo, &info);
329 info.si_signo = SIGILL;
331 info.si_code = TARGET_ILL_ILLOPN;
332 info._sifields._sigfault._addr = env->eip;
333 queue_signal(env, info.si_signo, &info);
337 /* just indicate that signals should be handled asap */
344 sig = gdb_handlesig (env, TARGET_SIGTRAP);
349 info.si_code = TARGET_TRAP_BRKPT;
350 queue_signal(env, info.si_signo, &info);
356 pc = env->segs[R_CS].base + env->eip;
357 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
361 process_pending_signals(env);
367 #define SPARC64_STACK_BIAS 2047
370 /* WARNING: dealing with register windows _is_ complicated. More info
371 can be found at http://www.sics.se/~psm/sparcstack.html */
372 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
374 index = (index + cwp * 16) % (16 * env->nwindows);
375 /* wrap handling : if cwp is on the last window, then we use the
376 registers 'after' the end */
377 if (index < 8 && env->cwp == env->nwindows - 1)
378 index += 16 * env->nwindows;
382 /* save the register window 'cwp1' */
383 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
388 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
389 #ifdef TARGET_SPARC64
391 sp_ptr += SPARC64_STACK_BIAS;
393 #if defined(DEBUG_WIN)
394 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
397 for(i = 0; i < 16; i++) {
398 /* FIXME - what to do if put_user() fails? */
399 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
400 sp_ptr += sizeof(abi_ulong);
404 static void save_window(CPUSPARCState *env)
406 #ifndef TARGET_SPARC64
407 unsigned int new_wim;
408 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
409 ((1LL << env->nwindows) - 1);
410 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
413 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
419 static void restore_window(CPUSPARCState *env)
421 #ifndef TARGET_SPARC64
422 unsigned int new_wim;
424 unsigned int i, cwp1;
427 #ifndef TARGET_SPARC64
428 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
429 ((1LL << env->nwindows) - 1);
432 /* restore the invalid window */
433 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
434 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
435 #ifdef TARGET_SPARC64
437 sp_ptr += SPARC64_STACK_BIAS;
439 #if defined(DEBUG_WIN)
440 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
443 for(i = 0; i < 16; i++) {
444 /* FIXME - what to do if get_user() fails? */
445 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
446 sp_ptr += sizeof(abi_ulong);
448 #ifdef TARGET_SPARC64
450 if (env->cleanwin < env->nwindows - 1)
458 static void flush_windows(CPUSPARCState *env)
464 /* if restore would invoke restore_window(), then we can stop */
465 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
466 #ifndef TARGET_SPARC64
467 if (env->wim & (1 << cwp1))
470 if (env->canrestore == 0)
475 save_window_offset(env, cwp1);
478 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
479 #ifndef TARGET_SPARC64
480 /* set wim so that restore will reload the registers */
481 env->wim = 1 << cwp1;
483 #if defined(DEBUG_WIN)
484 printf("flush_windows: nb=%d\n", offset - 1);
488 void cpu_loop(CPUSPARCState *env)
490 CPUState *cs = CPU(sparc_env_get_cpu(env));
491 int trapnr, ret, syscall_nr;
492 //target_siginfo_t info;
496 trapnr = cpu_exec(cs);
498 process_queued_cpu_work(cs);
501 #ifndef TARGET_SPARC64
504 /* FreeBSD uses 0x141 for syscalls too */
506 if (bsd_type != target_freebsd)
510 syscall_nr = env->gregs[1];
511 if (bsd_type == target_freebsd)
512 ret = do_freebsd_syscall(env, syscall_nr,
513 env->regwptr[0], env->regwptr[1],
514 env->regwptr[2], env->regwptr[3],
515 env->regwptr[4], env->regwptr[5], 0, 0);
516 else if (bsd_type == target_netbsd)
517 ret = do_netbsd_syscall(env, syscall_nr,
518 env->regwptr[0], env->regwptr[1],
519 env->regwptr[2], env->regwptr[3],
520 env->regwptr[4], env->regwptr[5]);
521 else { //if (bsd_type == target_openbsd)
522 #if defined(TARGET_SPARC64)
523 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
524 TARGET_OPENBSD_SYSCALL_G2RFLAG);
526 ret = do_openbsd_syscall(env, syscall_nr,
527 env->regwptr[0], env->regwptr[1],
528 env->regwptr[2], env->regwptr[3],
529 env->regwptr[4], env->regwptr[5]);
531 if ((unsigned int)ret >= (unsigned int)(-515)) {
533 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
534 env->xcc |= PSR_CARRY;
536 env->psr |= PSR_CARRY;
539 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
540 env->xcc &= ~PSR_CARRY;
542 env->psr &= ~PSR_CARRY;
545 env->regwptr[0] = ret;
546 /* next instruction */
547 #if defined(TARGET_SPARC64)
548 if (bsd_type == target_openbsd &&
549 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
550 env->pc = env->gregs[2];
551 env->npc = env->pc + 4;
552 } else if (bsd_type == target_openbsd &&
553 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
554 env->pc = env->gregs[7];
555 env->npc = env->pc + 4;
558 env->npc = env->npc + 4;
562 env->npc = env->npc + 4;
565 case 0x83: /* flush windows */
570 /* next instruction */
572 env->npc = env->npc + 4;
574 #ifndef TARGET_SPARC64
575 case TT_WIN_OVF: /* window overflow */
578 case TT_WIN_UNF: /* window underflow */
585 info.si_signo = SIGSEGV;
587 /* XXX: check env->error_code */
588 info.si_code = TARGET_SEGV_MAPERR;
589 info._sifields._sigfault._addr = env->mmuregs[4];
590 queue_signal(env, info.si_signo, &info);
595 case TT_SPILL: /* window overflow */
598 case TT_FILL: /* window underflow */
605 info.si_signo = SIGSEGV;
607 /* XXX: check env->error_code */
608 info.si_code = TARGET_SEGV_MAPERR;
609 if (trapnr == TT_DFAULT)
610 info._sifields._sigfault._addr = env->dmmuregs[4];
612 info._sifields._sigfault._addr = env->tsptr->tpc;
613 //queue_signal(env, info.si_signo, &info);
619 /* just indicate that signals should be handled asap */
625 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
631 info.si_code = TARGET_TRAP_BRKPT;
632 //queue_signal(env, info.si_signo, &info);
638 #ifdef TARGET_SPARC64
641 printf ("Unhandled trap: 0x%x\n", trapnr);
642 cpu_dump_state(cs, stderr, fprintf, 0);
645 process_pending_signals (env);
651 static void usage(void)
653 printf("qemu-" TARGET_NAME " version " QEMU_VERSION QEMU_PKGVERSION
654 "\n" QEMU_COPYRIGHT "\n"
655 "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
656 "BSD CPU emulator (compiled for %s emulation)\n"
658 "Standard options:\n"
659 "-h print this help\n"
660 "-g port wait gdb connection to port\n"
661 "-L path set the elf interpreter prefix (default=%s)\n"
662 "-s size set the stack size in bytes (default=%ld)\n"
663 "-cpu model select CPU (-cpu help for list)\n"
664 "-drop-ld-preload drop LD_PRELOAD for target process\n"
665 "-E var=value sets/modifies targets environment variable(s)\n"
666 "-U var unsets targets environment variable(s)\n"
667 "-B address set guest_base address to address\n"
668 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
671 "-d item1[,...] enable logging of specified items\n"
672 " (use '-d help' for a list of log items)\n"
673 "-D logfile write logs to 'logfile' (default stderr)\n"
674 "-p pagesize set the host page size to 'pagesize'\n"
675 "-singlestep always run in singlestep mode\n"
676 "-strace log system calls\n"
677 "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
678 " specify tracing options\n"
680 "Environment variables:\n"
681 "QEMU_STRACE Print system calls and arguments similar to the\n"
682 " 'strace' program. Enable by setting to any value.\n"
683 "You can use -E and -U options to set/unset environment variables\n"
684 "for target process. It is possible to provide several variables\n"
685 "by repeating the option. For example:\n"
686 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
687 "Note that if you provide several changes to single variable\n"
688 "last change will stay in effect.\n"
696 THREAD CPUState *thread_cpu;
698 bool qemu_cpu_is_self(CPUState *cpu)
700 return thread_cpu == cpu;
703 void qemu_cpu_kick(CPUState *cpu)
708 /* Assumes contents are already zeroed. */
709 void init_task_state(TaskState *ts)
714 ts->first_free = ts->sigqueue_table;
715 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
716 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
718 ts->sigqueue_table[i].next = NULL;
721 int main(int argc, char **argv)
723 const char *filename;
724 const char *cpu_model;
725 const char *log_file = NULL;
726 const char *log_mask = NULL;
727 struct target_pt_regs regs1, *regs = ®s1;
728 struct image_info info1, *info = &info1;
729 TaskState ts1, *ts = &ts1;
734 int gdbstub_port = 0;
735 char **target_environ, **wrk;
736 envlist_t *envlist = NULL;
737 char *trace_file = NULL;
738 bsd_type = target_openbsd;
743 module_call_init(MODULE_INIT_TRACE);
744 qemu_init_cpu_list();
745 module_call_init(MODULE_INIT_QOM);
747 if ((envlist = envlist_create()) == NULL) {
748 (void) fprintf(stderr, "Unable to allocate envlist\n");
752 /* add current environment into the list */
753 for (wrk = environ; *wrk != NULL; wrk++) {
754 (void) envlist_setenv(envlist, *wrk);
759 qemu_add_opts(&qemu_trace_opts);
770 if (!strcmp(r, "-")) {
772 } else if (!strcmp(r, "d")) {
773 if (optind >= argc) {
776 log_mask = argv[optind++];
777 } else if (!strcmp(r, "D")) {
778 if (optind >= argc) {
781 log_file = argv[optind++];
782 } else if (!strcmp(r, "E")) {
784 if (envlist_setenv(envlist, r) != 0)
786 } else if (!strcmp(r, "ignore-environment")) {
787 envlist_free(envlist);
788 if ((envlist = envlist_create()) == NULL) {
789 (void) fprintf(stderr, "Unable to allocate envlist\n");
792 } else if (!strcmp(r, "U")) {
794 if (envlist_unsetenv(envlist, r) != 0)
796 } else if (!strcmp(r, "s")) {
798 x86_stack_size = strtol(r, (char **)&r, 0);
799 if (x86_stack_size <= 0)
802 x86_stack_size *= 1024 * 1024;
803 else if (*r == 'k' || *r == 'K')
804 x86_stack_size *= 1024;
805 } else if (!strcmp(r, "L")) {
806 interp_prefix = argv[optind++];
807 } else if (!strcmp(r, "p")) {
808 qemu_host_page_size = atoi(argv[optind++]);
809 if (qemu_host_page_size == 0 ||
810 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
811 fprintf(stderr, "page size must be a power of two\n");
814 } else if (!strcmp(r, "g")) {
815 gdbstub_port = atoi(argv[optind++]);
816 } else if (!strcmp(r, "r")) {
817 qemu_uname_release = argv[optind++];
818 } else if (!strcmp(r, "cpu")) {
819 cpu_model = argv[optind++];
820 if (is_help_option(cpu_model)) {
821 /* XXX: implement xxx_cpu_list for targets that still miss it */
822 #if defined(cpu_list)
823 cpu_list(stdout, &fprintf);
827 } else if (!strcmp(r, "B")) {
828 guest_base = strtol(argv[optind++], NULL, 0);
830 } else if (!strcmp(r, "drop-ld-preload")) {
831 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
832 } else if (!strcmp(r, "bsd")) {
833 if (!strcasecmp(argv[optind], "freebsd")) {
834 bsd_type = target_freebsd;
835 } else if (!strcasecmp(argv[optind], "netbsd")) {
836 bsd_type = target_netbsd;
837 } else if (!strcasecmp(argv[optind], "openbsd")) {
838 bsd_type = target_openbsd;
843 } else if (!strcmp(r, "singlestep")) {
845 } else if (!strcmp(r, "strace")) {
847 } else if (!strcmp(r, "trace")) {
849 trace_file = trace_opt_parse(optarg);
856 qemu_log_needs_buffers();
857 qemu_set_log_filename(log_file, &error_fatal);
861 mask = qemu_str_to_log_mask(log_mask);
863 qemu_print_log_usage(stdout);
869 if (optind >= argc) {
872 filename = argv[optind];
874 if (!trace_init_backends()) {
877 trace_init_file(trace_file);
880 memset(regs, 0, sizeof(struct target_pt_regs));
882 /* Zero out image_info */
883 memset(info, 0, sizeof(struct image_info));
885 /* Scan interp_prefix dir for replacement files. */
886 init_paths(interp_prefix);
888 if (cpu_model == NULL) {
889 #if defined(TARGET_I386)
891 cpu_model = "qemu64";
893 cpu_model = "qemu32";
895 #elif defined(TARGET_SPARC)
896 #ifdef TARGET_SPARC64
897 cpu_model = "TI UltraSparc II";
899 cpu_model = "Fujitsu MB86904";
906 /* NOTE: we need to init the CPU at this stage to get
907 qemu_host_page_size */
908 cpu = cpu_init(cpu_model);
910 fprintf(stderr, "Unable to find CPU definition\n");
914 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
919 if (getenv("QEMU_STRACE")) {
923 target_environ = envlist_to_environ(envlist, NULL);
924 envlist_free(envlist);
927 * Now that page sizes are configured in cpu_init() we can do
928 * proper page alignment for guest_base.
930 guest_base = HOST_PAGE_ALIGN(guest_base);
933 * Read in mmap_min_addr kernel parameter. This value is used
934 * When loading the ELF image to determine whether guest_base
937 * When user has explicitly set the quest base, we skip this
940 if (!have_guest_base) {
943 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
945 if (fscanf(fp, "%lu", &tmp) == 1) {
947 qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr);
953 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
954 printf("Error loading %s\n", filename);
958 for (wrk = target_environ; *wrk; wrk++) {
962 free(target_environ);
964 if (qemu_loglevel_mask(CPU_LOG_PAGE)) {
965 qemu_log("guest_base 0x%lx\n", guest_base);
968 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
969 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
970 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
972 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
974 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
975 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
977 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
978 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
981 target_set_brk(info->brk);
985 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
986 generating the prologue until now so that the prologue can take
987 the real value of GUEST_BASE into account. */
988 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);