4 * Copyright (c) 2003 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, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define DEBUG_LOGFILE "/tmp/qemu.log"
32 #include <crt_externs.h>
33 # define environ (*_NSGetEnviron())
36 static const char *interp_prefix = CONFIG_QEMU_PREFIX;
38 #if defined(__i386__) && !defined(CONFIG_STATIC)
39 /* Force usage of an ELF interpreter even if it is an ELF shared
41 const char interp[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2";
44 /* for recent libc, we add these dummy symbols which are not declared
45 when generating a linked object (bug in ld ?) */
46 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
47 long __preinit_array_start[0];
48 long __preinit_array_end[0];
49 long __init_array_start[0];
50 long __init_array_end[0];
51 long __fini_array_start[0];
52 long __fini_array_end[0];
55 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
56 we allocate a bigger stack. Need a better solution, for example
57 by remapping the process stack directly at the right place */
58 unsigned long x86_stack_size = 512 * 1024;
60 void gemu_log(const char *fmt, ...)
65 vfprintf(stderr, fmt, ap);
69 void cpu_outb(CPUState *env, int addr, int val)
71 fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
74 void cpu_outw(CPUState *env, int addr, int val)
76 fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
79 void cpu_outl(CPUState *env, int addr, int val)
81 fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
84 int cpu_inb(CPUState *env, int addr)
86 fprintf(stderr, "inb: port=0x%04x\n", addr);
90 int cpu_inw(CPUState *env, int addr)
92 fprintf(stderr, "inw: port=0x%04x\n", addr);
96 int cpu_inl(CPUState *env, int addr)
98 fprintf(stderr, "inl: port=0x%04x\n", addr);
102 int cpu_get_pic_interrupt(CPUState *env)
107 /* timers for rdtsc */
109 #if defined(__i386__)
111 int64_t cpu_get_real_ticks(void)
114 asm volatile ("rdtsc" : "=A" (val));
118 #elif defined(__x86_64__)
120 int64_t cpu_get_real_ticks(void)
124 asm volatile("rdtsc" : "=a" (low), "=d" (high));
133 static uint64_t emu_time;
135 int64_t cpu_get_real_ticks(void)
143 /***********************************************************/
144 /* CPUX86 core interface */
146 uint64_t cpu_get_tsc(CPUX86State *env)
148 return cpu_get_real_ticks();
151 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
155 e1 = (addr << 16) | (limit & 0xffff);
156 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
158 stl((uint8_t *)ptr, e1);
159 stl((uint8_t *)ptr + 4, e2);
162 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
163 unsigned long addr, unsigned int sel)
166 e1 = (addr & 0xffff) | (sel << 16);
167 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
168 stl((uint8_t *)ptr, e1);
169 stl((uint8_t *)ptr + 4, e2);
172 uint64_t gdt_table[6];
173 uint64_t idt_table[256];
175 /* only dpl matters as we do only user space emulation */
176 static void set_idt(int n, unsigned int dpl)
178 set_gate(idt_table + n, 0, dpl, 0, 0);
181 void cpu_loop(CPUX86State *env)
185 target_siginfo_t info;
188 trapnr = cpu_x86_exec(env);
192 env->regs[R_EAX] = do_syscall(env,
203 info.si_signo = SIGBUS;
205 info.si_code = TARGET_SI_KERNEL;
206 info._sifields._sigfault._addr = 0;
207 queue_signal(info.si_signo, &info);
210 if (env->eflags & VM_MASK) {
211 handle_vm86_fault(env);
213 info.si_signo = SIGSEGV;
215 info.si_code = TARGET_SI_KERNEL;
216 info._sifields._sigfault._addr = 0;
217 queue_signal(info.si_signo, &info);
221 info.si_signo = SIGSEGV;
223 if (!(env->error_code & 1))
224 info.si_code = TARGET_SEGV_MAPERR;
226 info.si_code = TARGET_SEGV_ACCERR;
227 info._sifields._sigfault._addr = env->cr[2];
228 queue_signal(info.si_signo, &info);
231 if (env->eflags & VM_MASK) {
232 handle_vm86_trap(env, trapnr);
234 /* division by zero */
235 info.si_signo = SIGFPE;
237 info.si_code = TARGET_FPE_INTDIV;
238 info._sifields._sigfault._addr = env->eip;
239 queue_signal(info.si_signo, &info);
244 if (env->eflags & VM_MASK) {
245 handle_vm86_trap(env, trapnr);
247 info.si_signo = SIGTRAP;
249 if (trapnr == EXCP01_SSTP) {
250 info.si_code = TARGET_TRAP_BRKPT;
251 info._sifields._sigfault._addr = env->eip;
253 info.si_code = TARGET_SI_KERNEL;
254 info._sifields._sigfault._addr = 0;
256 queue_signal(info.si_signo, &info);
261 if (env->eflags & VM_MASK) {
262 handle_vm86_trap(env, trapnr);
264 info.si_signo = SIGSEGV;
266 info.si_code = TARGET_SI_KERNEL;
267 info._sifields._sigfault._addr = 0;
268 queue_signal(info.si_signo, &info);
272 info.si_signo = SIGILL;
274 info.si_code = TARGET_ILL_ILLOPN;
275 info._sifields._sigfault._addr = env->eip;
276 queue_signal(info.si_signo, &info);
279 /* just indicate that signals should be handled asap */
282 pc = env->segs[R_CS].base + env->eip;
283 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
287 process_pending_signals(env);
294 /* XXX: find a better solution */
295 extern void tb_invalidate_page_range(target_ulong start, target_ulong end);
297 static void arm_cache_flush(target_ulong start, target_ulong last)
299 target_ulong addr, last1;
305 last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
308 tb_invalidate_page_range(addr, last1 + 1);
315 void cpu_loop(CPUARMState *env)
318 unsigned int n, insn;
319 target_siginfo_t info;
322 trapnr = cpu_arm_exec(env);
326 TaskState *ts = env->opaque;
329 /* we handle the FPU emulation here, as Linux */
330 /* we get the opcode */
331 opcode = ldl_raw((uint8_t *)env->regs[15]);
333 if (EmulateAll(opcode, &ts->fpa, env->regs) == 0) {
334 info.si_signo = SIGILL;
336 info.si_code = TARGET_ILL_ILLOPN;
337 info._sifields._sigfault._addr = env->regs[15];
338 queue_signal(info.si_signo, &info);
348 insn = ldl((void *)(env->regs[15] - 4));
350 if (n == ARM_NR_cacheflush) {
351 arm_cache_flush(env->regs[0], env->regs[1]);
352 } else if (n >= ARM_SYSCALL_BASE) {
354 n -= ARM_SYSCALL_BASE;
355 env->regs[0] = do_syscall(env,
369 /* just indicate that signals should be handled asap */
373 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
375 cpu_arm_dump_state(env, stderr, 0);
378 process_pending_signals(env);
388 /* WARNING: dealing with register windows _is_ complicated */
389 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
391 index = (index + cwp * 16) & (16 * NWINDOWS - 1);
392 /* wrap handling : if cwp is on the last window, then we use the
393 registers 'after' the end */
394 if (index < 8 && env->cwp == (NWINDOWS - 1))
395 index += (16 * NWINDOWS);
399 static inline void save_window_offset(CPUSPARCState *env, int offset)
401 unsigned int new_wim, i, cwp1;
404 new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) &
405 ((1LL << NWINDOWS) - 1);
406 /* save the window */
407 cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
408 sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
409 #if defined(DEBUG_WIN)
410 printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
413 for(i = 0; i < 16; i++)
414 stl_raw(sp_ptr + i, env->regbase[get_reg_index(env, cwp1, 8 + i)]);
418 static void save_window(CPUSPARCState *env)
420 save_window_offset(env, 2);
423 static void restore_window(CPUSPARCState *env)
425 unsigned int new_wim, i, cwp1;
428 new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) &
429 ((1LL << NWINDOWS) - 1);
431 /* restore the invalid window */
432 cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
433 sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
434 #if defined(DEBUG_WIN)
435 printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
438 for(i = 0; i < 16; i++)
439 env->regbase[get_reg_index(env, cwp1, 8 + i)] = ldl_raw(sp_ptr + i);
443 static void flush_windows(CPUSPARCState *env)
446 #if defined(DEBUG_WIN)
447 printf("flush_windows:\n");
451 /* if restore would invoke restore_window(), then we can stop */
452 cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
453 if (env->wim & (1 << cwp1))
455 #if defined(DEBUG_WIN)
456 printf("offset=%d: ", offset);
458 save_window_offset(env, offset);
463 void cpu_loop (CPUSPARCState *env)
468 trapnr = cpu_sparc_exec (env);
473 ret = do_syscall (env, env->gregs[1],
474 env->regwptr[0], env->regwptr[1],
475 env->regwptr[2], env->regwptr[3],
476 env->regwptr[4], env->regwptr[5]);
477 if ((unsigned int)ret >= (unsigned int)(-515)) {
478 env->psr |= PSR_CARRY;
481 env->psr &= ~PSR_CARRY;
483 env->regwptr[0] = ret;
484 /* next instruction */
486 env->npc = env->npc + 4;
488 case 0x83: /* flush windows */
489 // flush_windows(env);
490 /* next instruction */
492 env->npc = env->npc + 4;
494 case TT_WIN_OVF: /* window overflow */
497 case TT_WIN_UNF: /* window underflow */
501 printf ("Unhandled trap: 0x%x\n", trapnr);
502 cpu_sparc_dump_state(env, stderr, 0);
505 process_pending_signals (env);
513 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
519 uint32_t cpu_ppc_load_tbl (CPUState *env)
521 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
524 uint32_t cpu_ppc_load_tbu (CPUState *env)
526 return cpu_ppc_get_tb(env) >> 32;
529 static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
534 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
536 cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
539 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
541 cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
544 uint32_t cpu_ppc_load_decr (CPUState *env)
550 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
555 void cpu_loop(CPUPPCState *env)
557 target_siginfo_t info;
562 trapnr = cpu_ppc_exec(env);
563 if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
564 trapnr != EXCP_TRACE) {
566 cpu_ppc_dump_state(env, logfile, 0);
572 case EXCP_SYSCALL_USER:
575 * PPC ABI uses overflow flag in cr0 to signal an error
579 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
580 env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
583 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
584 env->gpr[5], env->gpr[6], env->gpr[7],
586 if (ret > (uint32_t)(-515)) {
592 printf("syscall returned 0x%08x (%d)\n", ret, ret);
596 /* Should not happen ! */
597 fprintf(stderr, "RESET asked... Stop emulation\n");
599 fprintf(logfile, "RESET asked... Stop emulation\n");
601 case EXCP_MACHINE_CHECK:
602 fprintf(stderr, "Machine check exeption... Stop emulation\n");
604 fprintf(logfile, "RESET asked... Stop emulation\n");
605 info.si_signo = TARGET_SIGBUS;
607 info.si_code = TARGET_BUS_OBJERR;
608 info._sifields._sigfault._addr = env->nip - 4;
609 queue_signal(info.si_signo, &info);
611 fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
613 fprintf(logfile, "Invalid data memory access: 0x%08x\n",
616 switch (env->error_code & 0xF) {
617 case EXCP_DSI_TRANSLATE:
618 info.si_signo = TARGET_SIGSEGV;
620 info.si_code = TARGET_SEGV_MAPERR;
622 case EXCP_DSI_NOTSUP:
623 case EXCP_DSI_EXTERNAL:
624 info.si_signo = TARGET_SIGILL;
626 info.si_code = TARGET_ILL_ILLADR;
629 info.si_signo = TARGET_SIGSEGV;
631 info.si_code = TARGET_SEGV_ACCERR;
634 info.si_signo = TARGET_SIGTRAP;
636 info.si_code = TARGET_TRAP_BRKPT;
639 /* Let's send a regular segfault... */
640 fprintf(stderr, "Invalid segfault errno (%02x)\n",
643 fprintf(logfile, "Invalid segfault errno (%02x)\n",
646 info.si_signo = TARGET_SIGSEGV;
648 info.si_code = TARGET_SEGV_MAPERR;
651 info._sifields._sigfault._addr = env->nip;
652 queue_signal(info.si_signo, &info);
655 fprintf(stderr, "Invalid instruction fetch\n");
657 fprintf(logfile, "Invalid instruction fetch\n");
658 switch (env->error_code) {
659 case EXCP_ISI_TRANSLATE:
660 info.si_signo = TARGET_SIGSEGV;
662 info.si_code = TARGET_SEGV_MAPERR;
665 info.si_signo = TARGET_SIGILL;
667 info.si_code = TARGET_ILL_ILLADR;
669 case EXCP_ISI_NOEXEC:
671 info.si_signo = TARGET_SIGSEGV;
673 info.si_code = TARGET_SEGV_ACCERR;
676 /* Let's send a regular segfault... */
677 fprintf(stderr, "Invalid segfault errno (%02x)\n",
680 fprintf(logfile, "Invalid segfault errno (%02x)\n",
683 info.si_signo = TARGET_SIGSEGV;
685 info.si_code = TARGET_SEGV_MAPERR;
688 info._sifields._sigfault._addr = env->nip - 4;
689 queue_signal(info.si_signo, &info);
692 /* Should not happen ! */
693 fprintf(stderr, "External interruption... Stop emulation\n");
695 fprintf(logfile, "External interruption... Stop emulation\n");
698 fprintf(stderr, "Invalid unaligned memory access\n");
700 fprintf(logfile, "Invalid unaligned memory access\n");
701 info.si_signo = TARGET_SIGBUS;
703 info.si_code = TARGET_BUS_ADRALN;
704 info._sifields._sigfault._addr = env->nip - 4;
705 queue_signal(info.si_signo, &info);
708 switch (env->error_code & ~0xF) {
710 fprintf(stderr, "Program exception\n");
712 fprintf(logfile, "Program exception\n");
714 env->fpscr[7] |= 0x8;
715 /* Finally, update FEX */
716 if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
717 ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
718 env->fpscr[7] |= 0x4;
719 info.si_signo = TARGET_SIGFPE;
721 switch (env->error_code & 0xF) {
723 info.si_code = TARGET_FPE_FLTOVF;
726 info.si_code = TARGET_FPE_FLTUND;
730 info.si_code = TARGET_FPE_FLTDIV;
733 info.si_code = TARGET_FPE_FLTRES;
736 info.si_code = TARGET_FPE_FLTINV;
745 info.si_code = TARGET_FPE_FLTSUB;
748 fprintf(stderr, "Unknown floating point exception "
749 "(%02x)\n", env->error_code);
751 fprintf(logfile, "Unknown floating point exception "
752 "(%02x)\n", env->error_code & 0xF);
757 fprintf(stderr, "Invalid instruction\n");
759 fprintf(logfile, "Invalid instruction\n");
760 info.si_signo = TARGET_SIGILL;
762 switch (env->error_code & 0xF) {
763 case EXCP_INVAL_INVAL:
764 info.si_code = TARGET_ILL_ILLOPC;
766 case EXCP_INVAL_LSWX:
767 info.si_code = TARGET_ILL_ILLOPN;
770 info.si_code = TARGET_ILL_PRVREG;
773 info.si_code = TARGET_ILL_COPROC;
776 fprintf(stderr, "Unknown invalid operation (%02x)\n",
777 env->error_code & 0xF);
779 fprintf(logfile, "Unknown invalid operation (%02x)\n",
780 env->error_code & 0xF);
782 info.si_code = TARGET_ILL_ILLADR;
787 fprintf(stderr, "Privilege violation\n");
789 fprintf(logfile, "Privilege violation\n");
790 info.si_signo = TARGET_SIGILL;
792 switch (env->error_code & 0xF) {
794 info.si_code = TARGET_ILL_PRVOPC;
797 info.si_code = TARGET_ILL_PRVREG;
800 fprintf(stderr, "Unknown privilege violation (%02x)\n",
801 env->error_code & 0xF);
802 info.si_code = TARGET_ILL_PRVOPC;
807 fprintf(stderr, "Tried to call a TRAP\n");
809 fprintf(logfile, "Tried to call a TRAP\n");
812 /* Should not happen ! */
813 fprintf(stderr, "Unknown program exception (%02x)\n",
816 fprintf(logfile, "Unknwon program exception (%02x)\n",
821 info._sifields._sigfault._addr = env->nip - 4;
822 queue_signal(info.si_signo, &info);
825 fprintf(stderr, "No floating point allowed\n");
827 fprintf(logfile, "No floating point allowed\n");
828 info.si_signo = TARGET_SIGILL;
830 info.si_code = TARGET_ILL_COPROC;
831 info._sifields._sigfault._addr = env->nip - 4;
832 queue_signal(info.si_signo, &info);
835 /* Should not happen ! */
836 fprintf(stderr, "Decrementer exception\n");
838 fprintf(logfile, "Decrementer exception\n");
840 case EXCP_RESA: /* Implementation specific */
841 /* Should not happen ! */
842 fprintf(stderr, "RESA exception should never happen !\n");
844 fprintf(logfile, "RESA exception should never happen !\n");
846 case EXCP_RESB: /* Implementation specific */
847 /* Should not happen ! */
848 fprintf(stderr, "RESB exception should never happen !\n");
850 fprintf(logfile, "RESB exception should never happen !\n");
853 /* Do nothing: we use this to trace execution */
856 /* Should not happen ! */
857 fprintf(stderr, "Floating point assist exception\n");
859 fprintf(logfile, "Floating point assist exception\n");
862 /* We reloaded the msr, just go on */
864 fprintf(stderr, "Tried to go into supervisor mode !\n");
866 fprintf(logfile, "Tried to go into supervisor mode !\n");
871 /* We stopped because of a jump... */
874 /* Should not occur: we always are in user mode */
875 fprintf(stderr, "Return from interrupt ?\n");
877 fprintf(logfile, "Return from interrupt ?\n");
880 /* Don't know why this should ever happen... */
885 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
888 fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
889 "0x%02x - aborting\n", trapnr, env->error_code);
893 process_pending_signals(env);
900 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
901 "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
902 "Linux CPU emulator (compiled for %s emulation)\n"
904 "-h print this help\n"
905 "-L path set the elf interpreter prefix (default=%s)\n"
906 "-s size set the stack size in bytes (default=%ld)\n"
910 "-no-code-copy disable code copy acceleration\n"
912 "-d options activate log (logfile=%s)\n"
913 "-p pagesize set the host page size to 'pagesize'\n",
921 /* XXX: currently only used for async signals (see signal.c) */
922 CPUState *global_env;
923 /* used only if single thread */
924 CPUState *cpu_single_env = NULL;
926 /* used to free thread contexts */
927 TaskState *first_task_state;
929 int main(int argc, char **argv)
931 const char *filename;
932 struct target_pt_regs regs1, *regs = ®s1;
933 struct image_info info1, *info = &info1;
934 TaskState ts1, *ts = &ts1;
943 cpu_set_log_filename(DEBUG_LOGFILE);
954 if (!strcmp(r, "-")) {
956 } else if (!strcmp(r, "d")) {
964 mask = cpu_str_to_log_mask(r);
966 printf("Log items (comma separated):\n");
967 for(item = cpu_log_items; item->mask != 0; item++) {
968 printf("%-10s %s\n", item->name, item->help);
973 } else if (!strcmp(r, "s")) {
975 x86_stack_size = strtol(r, (char **)&r, 0);
976 if (x86_stack_size <= 0)
979 x86_stack_size *= 1024 * 1024;
980 else if (*r == 'k' || *r == 'K')
981 x86_stack_size *= 1024;
982 } else if (!strcmp(r, "L")) {
983 interp_prefix = argv[optind++];
984 } else if (!strcmp(r, "p")) {
985 qemu_host_page_size = atoi(argv[optind++]);
986 if (qemu_host_page_size == 0 ||
987 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
988 fprintf(stderr, "page size must be a power of two\n");
993 if (!strcmp(r, "no-code-copy")) {
994 code_copy_enabled = 0;
1003 filename = argv[optind];
1006 memset(regs, 0, sizeof(struct target_pt_regs));
1008 /* Zero out image_info */
1009 memset(info, 0, sizeof(struct image_info));
1011 /* Scan interp_prefix dir for replacement files. */
1012 init_paths(interp_prefix);
1014 /* NOTE: we need to init the CPU at this stage to get
1015 qemu_host_page_size */
1018 if (elf_exec(filename, argv+optind, environ, regs, info) != 0) {
1019 printf("Error loading %s\n", filename);
1026 fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
1027 fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
1028 fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
1029 fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
1030 fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
1031 fprintf(logfile, "brk 0x%08lx\n" , info->brk);
1032 fprintf(logfile, "entry 0x%08lx\n" , info->entry);
1035 target_set_brk((char *)info->brk);
1041 /* build Task State */
1042 memset(ts, 0, sizeof(TaskState));
1045 env->user_mode_only = 1;
1047 #if defined(TARGET_I386)
1048 cpu_x86_set_cpl(env, 3);
1050 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
1051 env->hflags |= HF_PE_MASK;
1053 /* flags setup : we activate the IRQs by default as in user mode */
1054 env->eflags |= IF_MASK;
1056 /* linux register setup */
1057 env->regs[R_EAX] = regs->eax;
1058 env->regs[R_EBX] = regs->ebx;
1059 env->regs[R_ECX] = regs->ecx;
1060 env->regs[R_EDX] = regs->edx;
1061 env->regs[R_ESI] = regs->esi;
1062 env->regs[R_EDI] = regs->edi;
1063 env->regs[R_EBP] = regs->ebp;
1064 env->regs[R_ESP] = regs->esp;
1065 env->eip = regs->eip;
1067 /* linux interrupt setup */
1068 env->idt.base = (void *)idt_table;
1069 env->idt.limit = sizeof(idt_table) - 1;
1092 /* linux segment setup */
1093 env->gdt.base = (void *)gdt_table;
1094 env->gdt.limit = sizeof(gdt_table) - 1;
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));
1098 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1099 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1100 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1101 cpu_x86_load_seg(env, R_CS, __USER_CS);
1102 cpu_x86_load_seg(env, R_DS, __USER_DS);
1103 cpu_x86_load_seg(env, R_ES, __USER_DS);
1104 cpu_x86_load_seg(env, R_SS, __USER_DS);
1105 cpu_x86_load_seg(env, R_FS, __USER_DS);
1106 cpu_x86_load_seg(env, R_GS, __USER_DS);
1108 #elif defined(TARGET_ARM)
1111 for(i = 0; i < 16; i++) {
1112 env->regs[i] = regs->uregs[i];
1114 env->cpsr = regs->uregs[16];
1116 #elif defined(TARGET_SPARC)
1120 env->npc = regs->npc;
1122 for(i = 0; i < 8; i++)
1123 env->gregs[i] = regs->u_regs[i];
1124 for(i = 0; i < 8; i++)
1125 env->regwptr[i] = regs->u_regs[i + 8];
1127 #elif defined(TARGET_PPC)
1130 for (i = 0; i < 32; i++) {
1131 if (i != 12 && i != 6)
1132 env->msr[i] = (regs->msr >> i) & 1;
1134 env->nip = regs->nip;
1135 for(i = 0; i < 32; i++) {
1136 env->gpr[i] = regs->gpr[i];
1140 #error unsupported target CPU