]>
git.proxmox.com Git - qemu.git/blob - linux-user/main.c
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 */
373 fprintf(stderr
, "qemu: unhandled CPU exception 0x%x - aborting\n",
375 cpu_dump_state(env
, stderr
, fprintf
, 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 */
500 case 0x100: // XXX, why do we get these?
503 printf ("Unhandled trap: 0x%x\n", trapnr
);
504 cpu_dump_state(env
, stderr
, fprintf
, 0);
507 process_pending_signals (env
);
515 static inline uint64_t cpu_ppc_get_tb (CPUState
*env
)
521 uint32_t cpu_ppc_load_tbl (CPUState
*env
)
523 return cpu_ppc_get_tb(env
) & 0xFFFFFFFF;
526 uint32_t cpu_ppc_load_tbu (CPUState
*env
)
528 return cpu_ppc_get_tb(env
) >> 32;
531 static void cpu_ppc_store_tb (CPUState
*env
, uint64_t value
)
536 void cpu_ppc_store_tbu (CPUState
*env
, uint32_t value
)
538 cpu_ppc_store_tb(env
, ((uint64_t)value
<< 32) | cpu_ppc_load_tbl(env
));
541 void cpu_ppc_store_tbl (CPUState
*env
, uint32_t value
)
543 cpu_ppc_store_tb(env
, ((uint64_t)cpu_ppc_load_tbl(env
) << 32) | value
);
546 uint32_t cpu_ppc_load_decr (CPUState
*env
)
552 void cpu_ppc_store_decr (CPUState
*env
, uint32_t value
)
557 void cpu_loop(CPUPPCState
*env
)
559 target_siginfo_t info
;
564 trapnr
= cpu_ppc_exec(env
);
565 if (trapnr
!= EXCP_SYSCALL_USER
&& trapnr
!= EXCP_BRANCH
&&
566 trapnr
!= EXCP_TRACE
) {
568 cpu_dump_state(env
, logfile
, fprintf
, 0);
574 case EXCP_SYSCALL_USER
:
577 * PPC ABI uses overflow flag in cr0 to signal an error
581 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env
->gpr
[0],
582 env
->gpr
[3], env
->gpr
[4], env
->gpr
[5], env
->gpr
[6]);
585 ret
= do_syscall(env
, env
->gpr
[0], env
->gpr
[3], env
->gpr
[4],
586 env
->gpr
[5], env
->gpr
[6], env
->gpr
[7],
588 if (ret
> (uint32_t)(-515)) {
594 printf("syscall returned 0x%08x (%d)\n", ret
, ret
);
598 /* Should not happen ! */
599 fprintf(stderr
, "RESET asked... Stop emulation\n");
601 fprintf(logfile
, "RESET asked... Stop emulation\n");
603 case EXCP_MACHINE_CHECK
:
604 fprintf(stderr
, "Machine check exeption... Stop emulation\n");
606 fprintf(logfile
, "RESET asked... Stop emulation\n");
607 info
.si_signo
= TARGET_SIGBUS
;
609 info
.si_code
= TARGET_BUS_OBJERR
;
610 info
._sifields
._sigfault
._addr
= env
->nip
- 4;
611 queue_signal(info
.si_signo
, &info
);
613 fprintf(stderr
, "Invalid data memory access: 0x%08x\n", env
->spr
[DAR
]);
615 fprintf(logfile
, "Invalid data memory access: 0x%08x\n",
618 switch (env
->error_code
& 0xF) {
619 case EXCP_DSI_TRANSLATE
:
620 info
.si_signo
= TARGET_SIGSEGV
;
622 info
.si_code
= TARGET_SEGV_MAPERR
;
624 case EXCP_DSI_NOTSUP
:
625 case EXCP_DSI_EXTERNAL
:
626 info
.si_signo
= TARGET_SIGILL
;
628 info
.si_code
= TARGET_ILL_ILLADR
;
631 info
.si_signo
= TARGET_SIGSEGV
;
633 info
.si_code
= TARGET_SEGV_ACCERR
;
636 info
.si_signo
= TARGET_SIGTRAP
;
638 info
.si_code
= TARGET_TRAP_BRKPT
;
641 /* Let's send a regular segfault... */
642 fprintf(stderr
, "Invalid segfault errno (%02x)\n",
645 fprintf(logfile
, "Invalid segfault errno (%02x)\n",
648 info
.si_signo
= TARGET_SIGSEGV
;
650 info
.si_code
= TARGET_SEGV_MAPERR
;
653 info
._sifields
._sigfault
._addr
= env
->nip
;
654 queue_signal(info
.si_signo
, &info
);
657 fprintf(stderr
, "Invalid instruction fetch\n");
659 fprintf(logfile
, "Invalid instruction fetch\n");
660 switch (env
->error_code
) {
661 case EXCP_ISI_TRANSLATE
:
662 info
.si_signo
= TARGET_SIGSEGV
;
664 info
.si_code
= TARGET_SEGV_MAPERR
;
667 info
.si_signo
= TARGET_SIGILL
;
669 info
.si_code
= TARGET_ILL_ILLADR
;
671 case EXCP_ISI_NOEXEC
:
673 info
.si_signo
= TARGET_SIGSEGV
;
675 info
.si_code
= TARGET_SEGV_ACCERR
;
678 /* Let's send a regular segfault... */
679 fprintf(stderr
, "Invalid segfault errno (%02x)\n",
682 fprintf(logfile
, "Invalid segfault errno (%02x)\n",
685 info
.si_signo
= TARGET_SIGSEGV
;
687 info
.si_code
= TARGET_SEGV_MAPERR
;
690 info
._sifields
._sigfault
._addr
= env
->nip
- 4;
691 queue_signal(info
.si_signo
, &info
);
694 /* Should not happen ! */
695 fprintf(stderr
, "External interruption... Stop emulation\n");
697 fprintf(logfile
, "External interruption... Stop emulation\n");
700 fprintf(stderr
, "Invalid unaligned memory access\n");
702 fprintf(logfile
, "Invalid unaligned memory access\n");
703 info
.si_signo
= TARGET_SIGBUS
;
705 info
.si_code
= TARGET_BUS_ADRALN
;
706 info
._sifields
._sigfault
._addr
= env
->nip
- 4;
707 queue_signal(info
.si_signo
, &info
);
710 switch (env
->error_code
& ~0xF) {
712 fprintf(stderr
, "Program exception\n");
714 fprintf(logfile
, "Program exception\n");
716 env
->fpscr
[7] |= 0x8;
717 /* Finally, update FEX */
718 if ((((env
->fpscr
[7] & 0x3) << 3) | (env
->fpscr
[6] >> 1)) &
719 ((env
->fpscr
[1] << 1) | (env
->fpscr
[0] >> 3)))
720 env
->fpscr
[7] |= 0x4;
721 info
.si_signo
= TARGET_SIGFPE
;
723 switch (env
->error_code
& 0xF) {
725 info
.si_code
= TARGET_FPE_FLTOVF
;
728 info
.si_code
= TARGET_FPE_FLTUND
;
732 info
.si_code
= TARGET_FPE_FLTDIV
;
735 info
.si_code
= TARGET_FPE_FLTRES
;
738 info
.si_code
= TARGET_FPE_FLTINV
;
747 info
.si_code
= TARGET_FPE_FLTSUB
;
750 fprintf(stderr
, "Unknown floating point exception "
751 "(%02x)\n", env
->error_code
);
753 fprintf(logfile
, "Unknown floating point exception "
754 "(%02x)\n", env
->error_code
& 0xF);
759 fprintf(stderr
, "Invalid instruction\n");
761 fprintf(logfile
, "Invalid instruction\n");
762 info
.si_signo
= TARGET_SIGILL
;
764 switch (env
->error_code
& 0xF) {
765 case EXCP_INVAL_INVAL
:
766 info
.si_code
= TARGET_ILL_ILLOPC
;
768 case EXCP_INVAL_LSWX
:
769 info
.si_code
= TARGET_ILL_ILLOPN
;
772 info
.si_code
= TARGET_ILL_PRVREG
;
775 info
.si_code
= TARGET_ILL_COPROC
;
778 fprintf(stderr
, "Unknown invalid operation (%02x)\n",
779 env
->error_code
& 0xF);
781 fprintf(logfile
, "Unknown invalid operation (%02x)\n",
782 env
->error_code
& 0xF);
784 info
.si_code
= TARGET_ILL_ILLADR
;
789 fprintf(stderr
, "Privilege violation\n");
791 fprintf(logfile
, "Privilege violation\n");
792 info
.si_signo
= TARGET_SIGILL
;
794 switch (env
->error_code
& 0xF) {
796 info
.si_code
= TARGET_ILL_PRVOPC
;
799 info
.si_code
= TARGET_ILL_PRVREG
;
802 fprintf(stderr
, "Unknown privilege violation (%02x)\n",
803 env
->error_code
& 0xF);
804 info
.si_code
= TARGET_ILL_PRVOPC
;
809 fprintf(stderr
, "Tried to call a TRAP\n");
811 fprintf(logfile
, "Tried to call a TRAP\n");
814 /* Should not happen ! */
815 fprintf(stderr
, "Unknown program exception (%02x)\n",
818 fprintf(logfile
, "Unknwon program exception (%02x)\n",
823 info
._sifields
._sigfault
._addr
= env
->nip
- 4;
824 queue_signal(info
.si_signo
, &info
);
827 fprintf(stderr
, "No floating point allowed\n");
829 fprintf(logfile
, "No floating point allowed\n");
830 info
.si_signo
= TARGET_SIGILL
;
832 info
.si_code
= TARGET_ILL_COPROC
;
833 info
._sifields
._sigfault
._addr
= env
->nip
- 4;
834 queue_signal(info
.si_signo
, &info
);
837 /* Should not happen ! */
838 fprintf(stderr
, "Decrementer exception\n");
840 fprintf(logfile
, "Decrementer exception\n");
842 case EXCP_RESA
: /* Implementation specific */
843 /* Should not happen ! */
844 fprintf(stderr
, "RESA exception should never happen !\n");
846 fprintf(logfile
, "RESA exception should never happen !\n");
848 case EXCP_RESB
: /* Implementation specific */
849 /* Should not happen ! */
850 fprintf(stderr
, "RESB exception should never happen !\n");
852 fprintf(logfile
, "RESB exception should never happen !\n");
855 /* Do nothing: we use this to trace execution */
858 /* Should not happen ! */
859 fprintf(stderr
, "Floating point assist exception\n");
861 fprintf(logfile
, "Floating point assist exception\n");
864 /* We reloaded the msr, just go on */
866 fprintf(stderr
, "Tried to go into supervisor mode !\n");
868 fprintf(logfile
, "Tried to go into supervisor mode !\n");
873 /* We stopped because of a jump... */
876 /* Should not occur: we always are in user mode */
877 fprintf(stderr
, "Return from interrupt ?\n");
879 fprintf(logfile
, "Return from interrupt ?\n");
882 /* Don't know why this should ever happen... */
887 fprintf(stderr
, "qemu: unhandled CPU exception 0x%x - aborting\n",
890 fprintf(logfile
, "qemu: unhandled CPU exception 0x%02x - "
891 "0x%02x - aborting\n", trapnr
, env
->error_code
);
895 process_pending_signals(env
);
902 printf("qemu-" TARGET_ARCH
" version " QEMU_VERSION
", Copyright (c) 2003-2004 Fabrice Bellard\n"
903 "usage: qemu-" TARGET_ARCH
" [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
904 "Linux CPU emulator (compiled for %s emulation)\n"
906 "-h print this help\n"
907 "-L path set the elf interpreter prefix (default=%s)\n"
908 "-s size set the stack size in bytes (default=%ld)\n"
912 "-no-code-copy disable code copy acceleration\n"
914 "-d options activate log (logfile=%s)\n"
915 "-p pagesize set the host page size to 'pagesize'\n",
923 /* XXX: currently only used for async signals (see signal.c) */
924 CPUState
*global_env
;
925 /* used only if single thread */
926 CPUState
*cpu_single_env
= NULL
;
928 /* used to free thread contexts */
929 TaskState
*first_task_state
;
931 int main(int argc
, char **argv
)
933 const char *filename
;
934 struct target_pt_regs regs1
, *regs
= ®s1
;
935 struct image_info info1
, *info
= &info1
;
936 TaskState ts1
, *ts
= &ts1
;
945 cpu_set_log_filename(DEBUG_LOGFILE
);
956 if (!strcmp(r
, "-")) {
958 } else if (!strcmp(r
, "d")) {
966 mask
= cpu_str_to_log_mask(r
);
968 printf("Log items (comma separated):\n");
969 for(item
= cpu_log_items
; item
->mask
!= 0; item
++) {
970 printf("%-10s %s\n", item
->name
, item
->help
);
975 } else if (!strcmp(r
, "s")) {
977 x86_stack_size
= strtol(r
, (char **)&r
, 0);
978 if (x86_stack_size
<= 0)
981 x86_stack_size
*= 1024 * 1024;
982 else if (*r
== 'k' || *r
== 'K')
983 x86_stack_size
*= 1024;
984 } else if (!strcmp(r
, "L")) {
985 interp_prefix
= argv
[optind
++];
986 } else if (!strcmp(r
, "p")) {
987 qemu_host_page_size
= atoi(argv
[optind
++]);
988 if (qemu_host_page_size
== 0 ||
989 (qemu_host_page_size
& (qemu_host_page_size
- 1)) != 0) {
990 fprintf(stderr
, "page size must be a power of two\n");
995 if (!strcmp(r
, "no-code-copy")) {
996 code_copy_enabled
= 0;
1005 filename
= argv
[optind
];
1008 memset(regs
, 0, sizeof(struct target_pt_regs
));
1010 /* Zero out image_info */
1011 memset(info
, 0, sizeof(struct image_info
));
1013 /* Scan interp_prefix dir for replacement files. */
1014 init_paths(interp_prefix
);
1016 /* NOTE: we need to init the CPU at this stage to get
1017 qemu_host_page_size */
1020 if (elf_exec(filename
, argv
+optind
, environ
, regs
, info
) != 0) {
1021 printf("Error loading %s\n", filename
);
1028 fprintf(logfile
, "start_brk 0x%08lx\n" , info
->start_brk
);
1029 fprintf(logfile
, "end_code 0x%08lx\n" , info
->end_code
);
1030 fprintf(logfile
, "start_code 0x%08lx\n" , info
->start_code
);
1031 fprintf(logfile
, "end_data 0x%08lx\n" , info
->end_data
);
1032 fprintf(logfile
, "start_stack 0x%08lx\n" , info
->start_stack
);
1033 fprintf(logfile
, "brk 0x%08lx\n" , info
->brk
);
1034 fprintf(logfile
, "entry 0x%08lx\n" , info
->entry
);
1037 target_set_brk((char *)info
->brk
);
1043 /* build Task State */
1044 memset(ts
, 0, sizeof(TaskState
));
1047 env
->user_mode_only
= 1;
1049 #if defined(TARGET_I386)
1050 cpu_x86_set_cpl(env
, 3);
1052 env
->cr
[0] = CR0_PG_MASK
| CR0_WP_MASK
| CR0_PE_MASK
;
1053 env
->hflags
|= HF_PE_MASK
;
1055 /* flags setup : we activate the IRQs by default as in user mode */
1056 env
->eflags
|= IF_MASK
;
1058 /* linux register setup */
1059 env
->regs
[R_EAX
] = regs
->eax
;
1060 env
->regs
[R_EBX
] = regs
->ebx
;
1061 env
->regs
[R_ECX
] = regs
->ecx
;
1062 env
->regs
[R_EDX
] = regs
->edx
;
1063 env
->regs
[R_ESI
] = regs
->esi
;
1064 env
->regs
[R_EDI
] = regs
->edi
;
1065 env
->regs
[R_EBP
] = regs
->ebp
;
1066 env
->regs
[R_ESP
] = regs
->esp
;
1067 env
->eip
= regs
->eip
;
1069 /* linux interrupt setup */
1070 env
->idt
.base
= (void *)idt_table
;
1071 env
->idt
.limit
= sizeof(idt_table
) - 1;
1094 /* linux segment setup */
1095 env
->gdt
.base
= (void *)gdt_table
;
1096 env
->gdt
.limit
= sizeof(gdt_table
) - 1;
1097 write_dt(&gdt_table
[__USER_CS
>> 3], 0, 0xfffff,
1098 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
| DESC_S_MASK
|
1099 (3 << DESC_DPL_SHIFT
) | (0xa << DESC_TYPE_SHIFT
));
1100 write_dt(&gdt_table
[__USER_DS
>> 3], 0, 0xfffff,
1101 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
| DESC_S_MASK
|
1102 (3 << DESC_DPL_SHIFT
) | (0x2 << DESC_TYPE_SHIFT
));
1103 cpu_x86_load_seg(env
, R_CS
, __USER_CS
);
1104 cpu_x86_load_seg(env
, R_DS
, __USER_DS
);
1105 cpu_x86_load_seg(env
, R_ES
, __USER_DS
);
1106 cpu_x86_load_seg(env
, R_SS
, __USER_DS
);
1107 cpu_x86_load_seg(env
, R_FS
, __USER_DS
);
1108 cpu_x86_load_seg(env
, R_GS
, __USER_DS
);
1110 #elif defined(TARGET_ARM)
1113 for(i
= 0; i
< 16; i
++) {
1114 env
->regs
[i
] = regs
->uregs
[i
];
1116 env
->cpsr
= regs
->uregs
[16];
1118 #elif defined(TARGET_SPARC)
1122 env
->npc
= regs
->npc
;
1124 for(i
= 0; i
< 8; i
++)
1125 env
->gregs
[i
] = regs
->u_regs
[i
];
1126 for(i
= 0; i
< 8; i
++)
1127 env
->regwptr
[i
] = regs
->u_regs
[i
+ 8];
1129 #elif defined(TARGET_PPC)
1132 for (i
= 0; i
< 32; i
++) {
1133 if (i
!= 12 && i
!= 6)
1134 env
->msr
[i
] = (regs
->msr
>> i
) & 1;
1136 env
->nip
= regs
->nip
;
1137 for(i
= 0; i
< 32; i
++) {
1138 env
->gpr
[i
] = regs
->gpr
[i
];
1142 #error unsupported target CPU