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)) && !defined(CONFIG_STATIC)
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 */
371 case EXCP_PREFETCH_ABORT:
372 case EXCP_DATA_ABORT:
374 info.si_signo = SIGSEGV;
376 /* XXX: check env->error_code */
377 info.si_code = TARGET_SEGV_MAPERR;
378 info._sifields._sigfault._addr = env->cp15_6;
379 queue_signal(info.si_signo, &info);
384 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
386 cpu_dump_state(env, stderr, fprintf, 0);
389 process_pending_signals(env);
399 /* WARNING: dealing with register windows _is_ complicated */
400 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
402 index = (index + cwp * 16) & (16 * NWINDOWS - 1);
403 /* wrap handling : if cwp is on the last window, then we use the
404 registers 'after' the end */
405 if (index < 8 && env->cwp == (NWINDOWS - 1))
406 index += (16 * NWINDOWS);
410 static inline void save_window_offset(CPUSPARCState *env, int offset)
412 unsigned int new_wim, i, cwp1;
415 new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) &
416 ((1LL << NWINDOWS) - 1);
417 /* save the window */
418 cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
419 sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
420 #if defined(DEBUG_WIN)
421 printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
424 for(i = 0; i < 16; i++)
425 stl_raw(sp_ptr + i, env->regbase[get_reg_index(env, cwp1, 8 + i)]);
429 static void save_window(CPUSPARCState *env)
431 save_window_offset(env, 2);
434 static void restore_window(CPUSPARCState *env)
436 unsigned int new_wim, i, cwp1;
439 new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) &
440 ((1LL << NWINDOWS) - 1);
442 /* restore the invalid window */
443 cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
444 sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
445 #if defined(DEBUG_WIN)
446 printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
449 for(i = 0; i < 16; i++)
450 env->regbase[get_reg_index(env, cwp1, 8 + i)] = ldl_raw(sp_ptr + i);
455 static void flush_windows(CPUSPARCState *env)
458 #if defined(DEBUG_WIN)
459 printf("flush_windows:\n");
463 /* if restore would invoke restore_window(), then we can stop */
464 cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
465 if (env->wim & (1 << cwp1))
467 #if defined(DEBUG_WIN)
468 printf("offset=%d: ", offset);
470 save_window_offset(env, offset);
476 void cpu_loop (CPUSPARCState *env)
479 target_siginfo_t info;
482 trapnr = cpu_sparc_exec (env);
487 ret = do_syscall (env, env->gregs[1],
488 env->regwptr[0], env->regwptr[1],
489 env->regwptr[2], env->regwptr[3],
490 env->regwptr[4], env->regwptr[5]);
491 if ((unsigned int)ret >= (unsigned int)(-515)) {
492 env->psr |= PSR_CARRY;
495 env->psr &= ~PSR_CARRY;
497 env->regwptr[0] = ret;
498 /* next instruction */
500 env->npc = env->npc + 4;
502 case 0x83: /* flush windows */
503 // flush_windows(env);
504 /* next instruction */
506 env->npc = env->npc + 4;
508 case TT_WIN_OVF: /* window overflow */
511 case TT_WIN_UNF: /* window underflow */
517 info.si_signo = SIGSEGV;
519 /* XXX: check env->error_code */
520 info.si_code = TARGET_SEGV_MAPERR;
521 info._sifields._sigfault._addr = env->mmuregs[4];
522 queue_signal(info.si_signo, &info);
525 case 0x100: // XXX, why do we get these?
528 printf ("Unhandled trap: 0x%x\n", trapnr);
529 cpu_dump_state(env, stderr, fprintf, 0);
532 process_pending_signals (env);
540 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
546 uint32_t cpu_ppc_load_tbl (CPUState *env)
548 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
551 uint32_t cpu_ppc_load_tbu (CPUState *env)
553 return cpu_ppc_get_tb(env) >> 32;
556 static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
561 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
563 cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
566 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
568 cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
571 uint32_t cpu_ppc_load_decr (CPUState *env)
577 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
582 void cpu_loop(CPUPPCState *env)
584 target_siginfo_t info;
589 trapnr = cpu_ppc_exec(env);
590 if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
591 trapnr != EXCP_TRACE) {
593 cpu_dump_state(env, logfile, fprintf, 0);
599 case EXCP_SYSCALL_USER:
602 * PPC ABI uses overflow flag in cr0 to signal an error
606 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
607 env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
610 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
611 env->gpr[5], env->gpr[6], env->gpr[7],
613 if (ret > (uint32_t)(-515)) {
619 printf("syscall returned 0x%08x (%d)\n", ret, ret);
623 /* Should not happen ! */
624 fprintf(stderr, "RESET asked... Stop emulation\n");
626 fprintf(logfile, "RESET asked... Stop emulation\n");
628 case EXCP_MACHINE_CHECK:
629 fprintf(stderr, "Machine check exeption... Stop emulation\n");
631 fprintf(logfile, "RESET asked... Stop emulation\n");
632 info.si_signo = TARGET_SIGBUS;
634 info.si_code = TARGET_BUS_OBJERR;
635 info._sifields._sigfault._addr = env->nip - 4;
636 queue_signal(info.si_signo, &info);
638 fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
640 fprintf(logfile, "Invalid data memory access: 0x%08x\n",
643 switch (env->error_code & 0xF) {
644 case EXCP_DSI_TRANSLATE:
645 info.si_signo = TARGET_SIGSEGV;
647 info.si_code = TARGET_SEGV_MAPERR;
649 case EXCP_DSI_NOTSUP:
650 case EXCP_DSI_EXTERNAL:
651 info.si_signo = TARGET_SIGILL;
653 info.si_code = TARGET_ILL_ILLADR;
656 info.si_signo = TARGET_SIGSEGV;
658 info.si_code = TARGET_SEGV_ACCERR;
661 info.si_signo = TARGET_SIGTRAP;
663 info.si_code = TARGET_TRAP_BRKPT;
666 /* Let's send a regular segfault... */
667 fprintf(stderr, "Invalid segfault errno (%02x)\n",
670 fprintf(logfile, "Invalid segfault errno (%02x)\n",
673 info.si_signo = TARGET_SIGSEGV;
675 info.si_code = TARGET_SEGV_MAPERR;
678 info._sifields._sigfault._addr = env->nip;
679 queue_signal(info.si_signo, &info);
682 fprintf(stderr, "Invalid instruction fetch\n");
684 fprintf(logfile, "Invalid instruction fetch\n");
685 switch (env->error_code) {
686 case EXCP_ISI_TRANSLATE:
687 info.si_signo = TARGET_SIGSEGV;
689 info.si_code = TARGET_SEGV_MAPERR;
692 info.si_signo = TARGET_SIGILL;
694 info.si_code = TARGET_ILL_ILLADR;
696 case EXCP_ISI_NOEXEC:
698 info.si_signo = TARGET_SIGSEGV;
700 info.si_code = TARGET_SEGV_ACCERR;
703 /* Let's send a regular segfault... */
704 fprintf(stderr, "Invalid segfault errno (%02x)\n",
707 fprintf(logfile, "Invalid segfault errno (%02x)\n",
710 info.si_signo = TARGET_SIGSEGV;
712 info.si_code = TARGET_SEGV_MAPERR;
715 info._sifields._sigfault._addr = env->nip - 4;
716 queue_signal(info.si_signo, &info);
719 /* Should not happen ! */
720 fprintf(stderr, "External interruption... Stop emulation\n");
722 fprintf(logfile, "External interruption... Stop emulation\n");
725 fprintf(stderr, "Invalid unaligned memory access\n");
727 fprintf(logfile, "Invalid unaligned memory access\n");
728 info.si_signo = TARGET_SIGBUS;
730 info.si_code = TARGET_BUS_ADRALN;
731 info._sifields._sigfault._addr = env->nip - 4;
732 queue_signal(info.si_signo, &info);
735 switch (env->error_code & ~0xF) {
737 fprintf(stderr, "Program exception\n");
739 fprintf(logfile, "Program exception\n");
741 env->fpscr[7] |= 0x8;
742 /* Finally, update FEX */
743 if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
744 ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
745 env->fpscr[7] |= 0x4;
746 info.si_signo = TARGET_SIGFPE;
748 switch (env->error_code & 0xF) {
750 info.si_code = TARGET_FPE_FLTOVF;
753 info.si_code = TARGET_FPE_FLTUND;
757 info.si_code = TARGET_FPE_FLTDIV;
760 info.si_code = TARGET_FPE_FLTRES;
763 info.si_code = TARGET_FPE_FLTINV;
772 info.si_code = TARGET_FPE_FLTSUB;
775 fprintf(stderr, "Unknown floating point exception "
776 "(%02x)\n", env->error_code);
778 fprintf(logfile, "Unknown floating point exception "
779 "(%02x)\n", env->error_code & 0xF);
784 fprintf(stderr, "Invalid instruction\n");
786 fprintf(logfile, "Invalid instruction\n");
787 info.si_signo = TARGET_SIGILL;
789 switch (env->error_code & 0xF) {
790 case EXCP_INVAL_INVAL:
791 info.si_code = TARGET_ILL_ILLOPC;
793 case EXCP_INVAL_LSWX:
794 info.si_code = TARGET_ILL_ILLOPN;
797 info.si_code = TARGET_ILL_PRVREG;
800 info.si_code = TARGET_ILL_COPROC;
803 fprintf(stderr, "Unknown invalid operation (%02x)\n",
804 env->error_code & 0xF);
806 fprintf(logfile, "Unknown invalid operation (%02x)\n",
807 env->error_code & 0xF);
809 info.si_code = TARGET_ILL_ILLADR;
814 fprintf(stderr, "Privilege violation\n");
816 fprintf(logfile, "Privilege violation\n");
817 info.si_signo = TARGET_SIGILL;
819 switch (env->error_code & 0xF) {
821 info.si_code = TARGET_ILL_PRVOPC;
824 info.si_code = TARGET_ILL_PRVREG;
827 fprintf(stderr, "Unknown privilege violation (%02x)\n",
828 env->error_code & 0xF);
829 info.si_code = TARGET_ILL_PRVOPC;
834 fprintf(stderr, "Tried to call a TRAP\n");
836 fprintf(logfile, "Tried to call a TRAP\n");
839 /* Should not happen ! */
840 fprintf(stderr, "Unknown program exception (%02x)\n",
843 fprintf(logfile, "Unknwon program exception (%02x)\n",
848 info._sifields._sigfault._addr = env->nip - 4;
849 queue_signal(info.si_signo, &info);
852 fprintf(stderr, "No floating point allowed\n");
854 fprintf(logfile, "No floating point allowed\n");
855 info.si_signo = TARGET_SIGILL;
857 info.si_code = TARGET_ILL_COPROC;
858 info._sifields._sigfault._addr = env->nip - 4;
859 queue_signal(info.si_signo, &info);
862 /* Should not happen ! */
863 fprintf(stderr, "Decrementer exception\n");
865 fprintf(logfile, "Decrementer exception\n");
867 case EXCP_RESA: /* Implementation specific */
868 /* Should not happen ! */
869 fprintf(stderr, "RESA exception should never happen !\n");
871 fprintf(logfile, "RESA exception should never happen !\n");
873 case EXCP_RESB: /* Implementation specific */
874 /* Should not happen ! */
875 fprintf(stderr, "RESB exception should never happen !\n");
877 fprintf(logfile, "RESB exception should never happen !\n");
880 /* Do nothing: we use this to trace execution */
883 /* Should not happen ! */
884 fprintf(stderr, "Floating point assist exception\n");
886 fprintf(logfile, "Floating point assist exception\n");
889 /* We reloaded the msr, just go on */
891 fprintf(stderr, "Tried to go into supervisor mode !\n");
893 fprintf(logfile, "Tried to go into supervisor mode !\n");
898 /* We stopped because of a jump... */
901 /* Should not occur: we always are in user mode */
902 fprintf(stderr, "Return from interrupt ?\n");
904 fprintf(logfile, "Return from interrupt ?\n");
907 /* Don't know why this should ever happen... */
912 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
915 fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
916 "0x%02x - aborting\n", trapnr, env->error_code);
920 process_pending_signals(env);
927 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
928 "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
929 "Linux CPU emulator (compiled for %s emulation)\n"
931 "-h print this help\n"
932 "-L path set the elf interpreter prefix (default=%s)\n"
933 "-s size set the stack size in bytes (default=%ld)\n"
937 "-no-code-copy disable code copy acceleration\n"
939 "-d options activate log (logfile=%s)\n"
940 "-p pagesize set the host page size to 'pagesize'\n",
948 /* XXX: currently only used for async signals (see signal.c) */
949 CPUState *global_env;
950 /* used only if single thread */
951 CPUState *cpu_single_env = NULL;
953 /* used to free thread contexts */
954 TaskState *first_task_state;
956 int main(int argc, char **argv)
958 const char *filename;
959 struct target_pt_regs regs1, *regs = ®s1;
960 struct image_info info1, *info = &info1;
961 TaskState ts1, *ts = &ts1;
970 cpu_set_log_filename(DEBUG_LOGFILE);
981 if (!strcmp(r, "-")) {
983 } else if (!strcmp(r, "d")) {
991 mask = cpu_str_to_log_mask(r);
993 printf("Log items (comma separated):\n");
994 for(item = cpu_log_items; item->mask != 0; item++) {
995 printf("%-10s %s\n", item->name, item->help);
1000 } else if (!strcmp(r, "s")) {
1002 x86_stack_size = strtol(r, (char **)&r, 0);
1003 if (x86_stack_size <= 0)
1006 x86_stack_size *= 1024 * 1024;
1007 else if (*r == 'k' || *r == 'K')
1008 x86_stack_size *= 1024;
1009 } else if (!strcmp(r, "L")) {
1010 interp_prefix = argv[optind++];
1011 } else if (!strcmp(r, "p")) {
1012 qemu_host_page_size = atoi(argv[optind++]);
1013 if (qemu_host_page_size == 0 ||
1014 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
1015 fprintf(stderr, "page size must be a power of two\n");
1019 #ifdef USE_CODE_COPY
1020 if (!strcmp(r, "no-code-copy")) {
1021 code_copy_enabled = 0;
1030 filename = argv[optind];
1033 memset(regs, 0, sizeof(struct target_pt_regs));
1035 /* Zero out image_info */
1036 memset(info, 0, sizeof(struct image_info));
1038 /* Scan interp_prefix dir for replacement files. */
1039 init_paths(interp_prefix);
1041 /* NOTE: we need to init the CPU at this stage to get
1042 qemu_host_page_size */
1045 if (elf_exec(filename, argv+optind, environ, regs, info) != 0) {
1046 printf("Error loading %s\n", filename);
1053 fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
1054 fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
1055 fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
1056 fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
1057 fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
1058 fprintf(logfile, "brk 0x%08lx\n" , info->brk);
1059 fprintf(logfile, "entry 0x%08lx\n" , info->entry);
1062 target_set_brk((char *)info->brk);
1068 /* build Task State */
1069 memset(ts, 0, sizeof(TaskState));
1072 env->user_mode_only = 1;
1074 #if defined(TARGET_I386)
1075 cpu_x86_set_cpl(env, 3);
1077 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
1078 env->hflags |= HF_PE_MASK;
1079 if (env->cpuid_features & CPUID_SSE) {
1080 env->cr[4] |= CR4_OSFXSR_MASK;
1081 env->hflags |= HF_OSFXSR_MASK;
1084 /* flags setup : we activate the IRQs by default as in user mode */
1085 env->eflags |= IF_MASK;
1087 /* linux register setup */
1088 env->regs[R_EAX] = regs->eax;
1089 env->regs[R_EBX] = regs->ebx;
1090 env->regs[R_ECX] = regs->ecx;
1091 env->regs[R_EDX] = regs->edx;
1092 env->regs[R_ESI] = regs->esi;
1093 env->regs[R_EDI] = regs->edi;
1094 env->regs[R_EBP] = regs->ebp;
1095 env->regs[R_ESP] = regs->esp;
1096 env->eip = regs->eip;
1098 /* linux interrupt setup */
1099 env->idt.base = (long)idt_table;
1100 env->idt.limit = sizeof(idt_table) - 1;
1123 /* linux segment setup */
1124 env->gdt.base = (long)gdt_table;
1125 env->gdt.limit = sizeof(gdt_table) - 1;
1126 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1127 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1128 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1129 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1130 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1131 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1132 cpu_x86_load_seg(env, R_CS, __USER_CS);
1133 cpu_x86_load_seg(env, R_DS, __USER_DS);
1134 cpu_x86_load_seg(env, R_ES, __USER_DS);
1135 cpu_x86_load_seg(env, R_SS, __USER_DS);
1136 cpu_x86_load_seg(env, R_FS, __USER_DS);
1137 cpu_x86_load_seg(env, R_GS, __USER_DS);
1139 #elif defined(TARGET_ARM)
1142 for(i = 0; i < 16; i++) {
1143 env->regs[i] = regs->uregs[i];
1145 env->cpsr = regs->uregs[16];
1147 #elif defined(TARGET_SPARC)
1151 env->npc = regs->npc;
1153 for(i = 0; i < 8; i++)
1154 env->gregs[i] = regs->u_regs[i];
1155 for(i = 0; i < 8; i++)
1156 env->regwptr[i] = regs->u_regs[i + 8];
1158 #elif defined(TARGET_PPC)
1161 for (i = 0; i < 32; i++) {
1162 if (i != 12 && i != 6)
1163 env->msr[i] = (regs->msr >> i) & 1;
1165 env->nip = regs->nip;
1166 for(i = 0; i < 32; i++) {
1167 env->gpr[i] = regs->gpr[i];
1171 #error unsupported target CPU