2 * i386 emulator main execution loop
4 * Copyright (c) 2003-2005 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #if !defined(CONFIG_SOFTMMU)
35 #include <sys/ucontext.h>
38 int tb_invalidated_flag
;
41 //#define DEBUG_SIGNAL
43 void cpu_loop_exit(void)
45 /* NOTE: the register at this point must be saved by hand because
46 longjmp restore them */
48 longjmp(env
->jmp_env
, 1);
51 #if !(defined(TARGET_SPARC) || defined(TARGET_SH4) || defined(TARGET_M68K))
55 /* exit the current TB from a signal handler. The host registers are
56 restored in a state compatible with the CPU emulator
58 void cpu_resume_from_signal(CPUState
*env1
, void *puc
)
60 #if !defined(CONFIG_SOFTMMU)
61 struct ucontext
*uc
= puc
;
66 /* XXX: restore cpu registers saved in host registers */
68 #if !defined(CONFIG_SOFTMMU)
70 /* XXX: use siglongjmp ? */
71 sigprocmask(SIG_SETMASK
, &uc
->uc_sigmask
, NULL
);
74 longjmp(env
->jmp_env
, 1);
78 static TranslationBlock
*tb_find_slow(target_ulong pc
,
82 TranslationBlock
*tb
, **ptb1
;
85 target_ulong phys_pc
, phys_page1
, phys_page2
, virt_page2
;
90 tb_invalidated_flag
= 0;
92 regs_to_env(); /* XXX: do it just before cpu_gen_code() */
94 /* find translated block using physical mappings */
95 phys_pc
= get_phys_addr_code(env
, pc
);
96 phys_page1
= phys_pc
& TARGET_PAGE_MASK
;
98 h
= tb_phys_hash_func(phys_pc
);
99 ptb1
= &tb_phys_hash
[h
];
105 tb
->page_addr
[0] == phys_page1
&&
106 tb
->cs_base
== cs_base
&&
107 tb
->flags
== flags
) {
108 /* check next page if needed */
109 if (tb
->page_addr
[1] != -1) {
110 virt_page2
= (pc
& TARGET_PAGE_MASK
) +
112 phys_page2
= get_phys_addr_code(env
, virt_page2
);
113 if (tb
->page_addr
[1] == phys_page2
)
119 ptb1
= &tb
->phys_hash_next
;
122 /* if no translated code available, then translate it now */
125 /* flush must be done */
127 /* cannot fail at this point */
129 /* don't forget to invalidate previous TB info */
130 tb_invalidated_flag
= 1;
132 tc_ptr
= code_gen_ptr
;
134 tb
->cs_base
= cs_base
;
136 cpu_gen_code(env
, tb
, CODE_GEN_MAX_SIZE
, &code_gen_size
);
137 code_gen_ptr
= (void *)(((unsigned long)code_gen_ptr
+ code_gen_size
+ CODE_GEN_ALIGN
- 1) & ~(CODE_GEN_ALIGN
- 1));
139 /* check next page if needed */
140 virt_page2
= (pc
+ tb
->size
- 1) & TARGET_PAGE_MASK
;
142 if ((pc
& TARGET_PAGE_MASK
) != virt_page2
) {
143 phys_page2
= get_phys_addr_code(env
, virt_page2
);
145 tb_link_phys(tb
, phys_pc
, phys_page2
);
148 /* we add the TB in the virtual pc hash table */
149 env
->tb_jmp_cache
[tb_jmp_cache_hash_func(pc
)] = tb
;
150 spin_unlock(&tb_lock
);
154 static inline TranslationBlock
*tb_find_fast(void)
156 TranslationBlock
*tb
;
157 target_ulong cs_base
, pc
;
160 /* we record a subset of the CPU state. It will
161 always be the same before a given translated block
163 #if defined(TARGET_I386)
165 flags
|= (env
->eflags
& (IOPL_MASK
| TF_MASK
| VM_MASK
));
166 flags
|= env
->intercept
;
167 cs_base
= env
->segs
[R_CS
].base
;
168 pc
= cs_base
+ env
->eip
;
169 #elif defined(TARGET_ARM)
170 flags
= env
->thumb
| (env
->vfp
.vec_len
<< 1)
171 | (env
->vfp
.vec_stride
<< 4);
172 if ((env
->uncached_cpsr
& CPSR_M
) != ARM_CPU_MODE_USR
)
174 if (env
->vfp
.xregs
[ARM_VFP_FPEXC
] & (1 << 30))
178 #elif defined(TARGET_SPARC)
179 #ifdef TARGET_SPARC64
180 // Combined FPU enable bits . PRIV . DMMU enabled . IMMU enabled
181 flags
= (((env
->pstate
& PS_PEF
) >> 1) | ((env
->fprs
& FPRS_FEF
) << 2))
182 | (env
->pstate
& PS_PRIV
) | ((env
->lsu
& (DMMU_E
| IMMU_E
)) >> 2);
184 // FPU enable . MMU Boot . MMU enabled . MMU no-fault . Supervisor
185 flags
= (env
->psref
<< 4) | (((env
->mmuregs
[0] & MMU_BM
) >> 14) << 3)
186 | ((env
->mmuregs
[0] & (MMU_E
| MMU_NF
)) << 1)
191 #elif defined(TARGET_PPC)
195 #elif defined(TARGET_MIPS)
196 flags
= env
->hflags
& (MIPS_HFLAG_TMASK
| MIPS_HFLAG_BMASK
);
198 pc
= env
->PC
[env
->current_tc
];
199 #elif defined(TARGET_M68K)
200 flags
= (env
->fpcr
& M68K_FPCR_PREC
) /* Bit 6 */
201 | (env
->sr
& SR_S
) /* Bit 13 */
202 | ((env
->macsr
>> 4) & 0xf); /* Bits 0-3 */
205 #elif defined(TARGET_SH4)
206 flags
= env
->sr
& (SR_MD
| SR_RB
);
207 cs_base
= 0; /* XXXXX */
209 #elif defined(TARGET_ALPHA)
214 #error unsupported CPU
216 tb
= env
->tb_jmp_cache
[tb_jmp_cache_hash_func(pc
)];
217 if (__builtin_expect(!tb
|| tb
->pc
!= pc
|| tb
->cs_base
!= cs_base
||
218 tb
->flags
!= flags
, 0)) {
219 tb
= tb_find_slow(pc
, cs_base
, flags
);
220 /* Note: we do it here to avoid a gcc bug on Mac OS X when
221 doing it in tb_find_slow */
222 if (tb_invalidated_flag
) {
223 /* as some TB could have been invalidated because
224 of memory exceptions while generating the code, we
225 must recompute the hash index here */
233 /* main execution loop */
235 int cpu_exec(CPUState
*env1
)
237 #define DECLARE_HOST_REGS 1
238 #include "hostregs_helper.h"
239 #if defined(TARGET_SPARC)
240 #if defined(reg_REGWPTR)
241 uint32_t *saved_regwptr
;
244 #if defined(__sparc__) && !defined(HOST_SOLARIS)
248 int ret
, interrupt_request
;
249 void (*gen_func
)(void);
250 TranslationBlock
*tb
;
253 if (cpu_halted(env1
) == EXCP_HALTED
)
256 cpu_single_env
= env1
;
258 /* first we save global registers */
259 #define SAVE_HOST_REGS 1
260 #include "hostregs_helper.h"
262 #if defined(__sparc__) && !defined(HOST_SOLARIS)
263 /* we also save i7 because longjmp may not restore it */
264 asm volatile ("mov %%i7, %0" : "=r" (saved_i7
));
268 #if defined(TARGET_I386)
269 /* put eflags in CPU temporary format */
270 CC_SRC
= env
->eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
271 DF
= 1 - (2 * ((env
->eflags
>> 10) & 1));
272 CC_OP
= CC_OP_EFLAGS
;
273 env
->eflags
&= ~(DF_MASK
| CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
274 #elif defined(TARGET_SPARC)
275 #if defined(reg_REGWPTR)
276 saved_regwptr
= REGWPTR
;
278 #elif defined(TARGET_M68K)
279 env
->cc_op
= CC_OP_FLAGS
;
280 env
->cc_dest
= env
->sr
& 0xf;
281 env
->cc_x
= (env
->sr
>> 4) & 1;
282 #elif defined(TARGET_ALPHA)
283 #elif defined(TARGET_ARM)
284 #elif defined(TARGET_PPC)
285 #elif defined(TARGET_MIPS)
286 #elif defined(TARGET_SH4)
289 #error unsupported target CPU
291 env
->exception_index
= -1;
293 /* prepare setjmp context for exception handling */
295 if (setjmp(env
->jmp_env
) == 0) {
296 env
->current_tb
= NULL
;
297 /* if an exception is pending, we execute it here */
298 if (env
->exception_index
>= 0) {
299 if (env
->exception_index
>= EXCP_INTERRUPT
) {
300 /* exit request from the cpu execution loop */
301 ret
= env
->exception_index
;
303 } else if (env
->user_mode_only
) {
304 /* if user mode only, we simulate a fake exception
305 which will be handled outside the cpu execution
307 #if defined(TARGET_I386)
308 do_interrupt_user(env
->exception_index
,
309 env
->exception_is_int
,
311 env
->exception_next_eip
);
313 ret
= env
->exception_index
;
316 #if defined(TARGET_I386)
317 /* simulate a real cpu exception. On i386, it can
318 trigger new exceptions, but we do not handle
319 double or triple faults yet. */
320 do_interrupt(env
->exception_index
,
321 env
->exception_is_int
,
323 env
->exception_next_eip
, 0);
324 /* successfully delivered */
325 env
->old_exception
= -1;
326 #elif defined(TARGET_PPC)
328 #elif defined(TARGET_MIPS)
330 #elif defined(TARGET_SPARC)
331 do_interrupt(env
->exception_index
);
332 #elif defined(TARGET_ARM)
334 #elif defined(TARGET_SH4)
336 #elif defined(TARGET_ALPHA)
338 #elif defined(TARGET_M68K)
342 env
->exception_index
= -1;
345 if (kqemu_is_ok(env
) && env
->interrupt_request
== 0) {
347 env
->eflags
= env
->eflags
| cc_table
[CC_OP
].compute_all() | (DF
& DF_MASK
);
348 ret
= kqemu_cpu_exec(env
);
349 /* put eflags in CPU temporary format */
350 CC_SRC
= env
->eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
351 DF
= 1 - (2 * ((env
->eflags
>> 10) & 1));
352 CC_OP
= CC_OP_EFLAGS
;
353 env
->eflags
&= ~(DF_MASK
| CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
356 longjmp(env
->jmp_env
, 1);
357 } else if (ret
== 2) {
358 /* softmmu execution needed */
360 if (env
->interrupt_request
!= 0) {
361 /* hardware interrupt will be executed just after */
363 /* otherwise, we restart */
364 longjmp(env
->jmp_env
, 1);
370 T0
= 0; /* force lookup of first TB */
372 #if defined(__sparc__) && !defined(HOST_SOLARIS)
373 /* g1 can be modified by some libc? functions */
376 interrupt_request
= env
->interrupt_request
;
377 if (__builtin_expect(interrupt_request
, 0)
378 #if defined(TARGET_I386)
379 && env
->hflags
& HF_GIF_MASK
382 if (interrupt_request
& CPU_INTERRUPT_DEBUG
) {
383 env
->interrupt_request
&= ~CPU_INTERRUPT_DEBUG
;
384 env
->exception_index
= EXCP_DEBUG
;
387 #if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_MIPS) || \
388 defined(TARGET_PPC) || defined(TARGET_ALPHA)
389 if (interrupt_request
& CPU_INTERRUPT_HALT
) {
390 env
->interrupt_request
&= ~CPU_INTERRUPT_HALT
;
392 env
->exception_index
= EXCP_HLT
;
396 #if defined(TARGET_I386)
397 if ((interrupt_request
& CPU_INTERRUPT_SMI
) &&
398 !(env
->hflags
& HF_SMM_MASK
)) {
399 svm_check_intercept(SVM_EXIT_SMI
);
400 env
->interrupt_request
&= ~CPU_INTERRUPT_SMI
;
402 #if defined(__sparc__) && !defined(HOST_SOLARIS)
407 } else if ((interrupt_request
& CPU_INTERRUPT_HARD
) &&
408 (env
->eflags
& IF_MASK
|| env
->hflags
& HF_HIF_MASK
) &&
409 !(env
->hflags
& HF_INHIBIT_IRQ_MASK
)) {
411 svm_check_intercept(SVM_EXIT_INTR
);
412 env
->interrupt_request
&= ~(CPU_INTERRUPT_HARD
| CPU_INTERRUPT_VIRQ
);
413 intno
= cpu_get_pic_interrupt(env
);
414 if (loglevel
& CPU_LOG_TB_IN_ASM
) {
415 fprintf(logfile
, "Servicing hardware INT=0x%02x\n", intno
);
417 do_interrupt(intno
, 0, 0, 0, 1);
418 /* ensure that no TB jump will be modified as
419 the program flow was changed */
420 #if defined(__sparc__) && !defined(HOST_SOLARIS)
425 #if !defined(CONFIG_USER_ONLY)
426 } else if ((interrupt_request
& CPU_INTERRUPT_VIRQ
) &&
427 (env
->eflags
& IF_MASK
) && !(env
->hflags
& HF_INHIBIT_IRQ_MASK
)) {
429 /* FIXME: this should respect TPR */
430 env
->interrupt_request
&= ~CPU_INTERRUPT_VIRQ
;
431 svm_check_intercept(SVM_EXIT_VINTR
);
432 intno
= ldl_phys(env
->vm_vmcb
+ offsetof(struct vmcb
, control
.int_vector
));
433 if (loglevel
& CPU_LOG_TB_IN_ASM
)
434 fprintf(logfile
, "Servicing virtual hardware INT=0x%02x\n", intno
);
435 do_interrupt(intno
, 0, 0, -1, 1);
436 stl_phys(env
->vm_vmcb
+ offsetof(struct vmcb
, control
.int_ctl
),
437 ldl_phys(env
->vm_vmcb
+ offsetof(struct vmcb
, control
.int_ctl
)) & ~V_IRQ_MASK
);
438 #if defined(__sparc__) && !defined(HOST_SOLARIS)
445 #elif defined(TARGET_PPC)
447 if ((interrupt_request
& CPU_INTERRUPT_RESET
)) {
451 if (interrupt_request
& CPU_INTERRUPT_HARD
) {
452 ppc_hw_interrupt(env
);
453 if (env
->pending_interrupts
== 0)
454 env
->interrupt_request
&= ~CPU_INTERRUPT_HARD
;
455 #if defined(__sparc__) && !defined(HOST_SOLARIS)
461 #elif defined(TARGET_MIPS)
462 if ((interrupt_request
& CPU_INTERRUPT_HARD
) &&
463 (env
->CP0_Status
& env
->CP0_Cause
& CP0Ca_IP_mask
) &&
464 (env
->CP0_Status
& (1 << CP0St_IE
)) &&
465 !(env
->CP0_Status
& (1 << CP0St_EXL
)) &&
466 !(env
->CP0_Status
& (1 << CP0St_ERL
)) &&
467 !(env
->hflags
& MIPS_HFLAG_DM
)) {
469 env
->exception_index
= EXCP_EXT_INTERRUPT
;
472 #if defined(__sparc__) && !defined(HOST_SOLARIS)
478 #elif defined(TARGET_SPARC)
479 if ((interrupt_request
& CPU_INTERRUPT_HARD
) &&
481 int pil
= env
->interrupt_index
& 15;
482 int type
= env
->interrupt_index
& 0xf0;
484 if (((type
== TT_EXTINT
) &&
485 (pil
== 15 || pil
> env
->psrpil
)) ||
487 env
->interrupt_request
&= ~CPU_INTERRUPT_HARD
;
488 do_interrupt(env
->interrupt_index
);
489 env
->interrupt_index
= 0;
490 #if !defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
493 #if defined(__sparc__) && !defined(HOST_SOLARIS)
499 } else if (interrupt_request
& CPU_INTERRUPT_TIMER
) {
500 //do_interrupt(0, 0, 0, 0, 0);
501 env
->interrupt_request
&= ~CPU_INTERRUPT_TIMER
;
503 #elif defined(TARGET_ARM)
504 if (interrupt_request
& CPU_INTERRUPT_FIQ
505 && !(env
->uncached_cpsr
& CPSR_F
)) {
506 env
->exception_index
= EXCP_FIQ
;
509 if (interrupt_request
& CPU_INTERRUPT_HARD
510 && !(env
->uncached_cpsr
& CPSR_I
)) {
511 env
->exception_index
= EXCP_IRQ
;
514 #elif defined(TARGET_SH4)
516 #elif defined(TARGET_ALPHA)
517 if (interrupt_request
& CPU_INTERRUPT_HARD
) {
520 #elif defined(TARGET_M68K)
521 if (interrupt_request
& CPU_INTERRUPT_HARD
522 && ((env
->sr
& SR_I
) >> SR_I_SHIFT
)
523 < env
->pending_level
) {
524 /* Real hardware gets the interrupt vector via an
525 IACK cycle at this point. Current emulated
526 hardware doesn't rely on this, so we
527 provide/save the vector when the interrupt is
529 env
->exception_index
= env
->pending_vector
;
533 /* Don't use the cached interupt_request value,
534 do_interrupt may have updated the EXITTB flag. */
535 if (env
->interrupt_request
& CPU_INTERRUPT_EXITTB
) {
536 env
->interrupt_request
&= ~CPU_INTERRUPT_EXITTB
;
537 /* ensure that no TB jump will be modified as
538 the program flow was changed */
539 #if defined(__sparc__) && !defined(HOST_SOLARIS)
545 if (interrupt_request
& CPU_INTERRUPT_EXIT
) {
546 env
->interrupt_request
&= ~CPU_INTERRUPT_EXIT
;
547 env
->exception_index
= EXCP_INTERRUPT
;
552 if ((loglevel
& CPU_LOG_TB_CPU
)) {
553 /* restore flags in standard format */
555 #if defined(TARGET_I386)
556 env
->eflags
= env
->eflags
| cc_table
[CC_OP
].compute_all() | (DF
& DF_MASK
);
557 cpu_dump_state(env
, logfile
, fprintf
, X86_DUMP_CCOP
);
558 env
->eflags
&= ~(DF_MASK
| CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
559 #elif defined(TARGET_ARM)
560 cpu_dump_state(env
, logfile
, fprintf
, 0);
561 #elif defined(TARGET_SPARC)
562 REGWPTR
= env
->regbase
+ (env
->cwp
* 16);
563 env
->regwptr
= REGWPTR
;
564 cpu_dump_state(env
, logfile
, fprintf
, 0);
565 #elif defined(TARGET_PPC)
566 cpu_dump_state(env
, logfile
, fprintf
, 0);
567 #elif defined(TARGET_M68K)
568 cpu_m68k_flush_flags(env
, env
->cc_op
);
569 env
->cc_op
= CC_OP_FLAGS
;
570 env
->sr
= (env
->sr
& 0xffe0)
571 | env
->cc_dest
| (env
->cc_x
<< 4);
572 cpu_dump_state(env
, logfile
, fprintf
, 0);
573 #elif defined(TARGET_MIPS)
574 cpu_dump_state(env
, logfile
, fprintf
, 0);
575 #elif defined(TARGET_SH4)
576 cpu_dump_state(env
, logfile
, fprintf
, 0);
577 #elif defined(TARGET_ALPHA)
578 cpu_dump_state(env
, logfile
, fprintf
, 0);
580 #error unsupported target CPU
586 if ((loglevel
& CPU_LOG_EXEC
)) {
587 fprintf(logfile
, "Trace 0x%08lx [" TARGET_FMT_lx
"] %s\n",
588 (long)tb
->tc_ptr
, tb
->pc
,
589 lookup_symbol(tb
->pc
));
592 #if defined(__sparc__) && !defined(HOST_SOLARIS)
595 /* see if we can patch the calling TB. When the TB
596 spans two pages, we cannot safely do a direct
601 (env
->kqemu_enabled
!= 2) &&
603 tb
->page_addr
[1] == -1
604 #if defined(TARGET_I386) && defined(USE_CODE_COPY)
605 && (tb
->cflags
& CF_CODE_COPY
) ==
606 (((TranslationBlock
*)(T0
& ~3))->cflags
& CF_CODE_COPY
)
610 tb_add_jump((TranslationBlock
*)(long)(T0
& ~3), T0
& 3, tb
);
611 #if defined(USE_CODE_COPY)
612 /* propagates the FP use info */
613 ((TranslationBlock
*)(T0
& ~3))->cflags
|=
614 (tb
->cflags
& CF_FP_USED
);
616 spin_unlock(&tb_lock
);
620 env
->current_tb
= tb
;
621 /* execute the generated code */
622 gen_func
= (void *)tc_ptr
;
623 #if defined(__sparc__)
624 __asm__
__volatile__("call %0\n\t"
628 : "i0", "i1", "i2", "i3", "i4", "i5",
629 "o0", "o1", "o2", "o3", "o4", "o5",
630 "l0", "l1", "l2", "l3", "l4", "l5",
632 #elif defined(__arm__)
633 asm volatile ("mov pc, %0\n\t"
634 ".global exec_loop\n\t"
638 : "r1", "r2", "r3", "r8", "r9", "r10", "r12", "r14");
639 #elif defined(TARGET_I386) && defined(USE_CODE_COPY)
641 if (!(tb
->cflags
& CF_CODE_COPY
)) {
642 if ((tb
->cflags
& CF_FP_USED
) && env
->native_fp_regs
) {
643 save_native_fp_state(env
);
647 if ((tb
->cflags
& CF_FP_USED
) && !env
->native_fp_regs
) {
648 restore_native_fp_state(env
);
650 /* we work with native eflags */
651 CC_SRC
= cc_table
[CC_OP
].compute_all();
652 CC_OP
= CC_OP_EFLAGS
;
653 asm(".globl exec_loop\n"
658 " fs movl %11, %%eax\n"
659 " andl $0x400, %%eax\n"
660 " fs orl %8, %%eax\n"
663 " fs movl %%esp, %12\n"
664 " fs movl %0, %%eax\n"
665 " fs movl %1, %%ecx\n"
666 " fs movl %2, %%edx\n"
667 " fs movl %3, %%ebx\n"
668 " fs movl %4, %%esp\n"
669 " fs movl %5, %%ebp\n"
670 " fs movl %6, %%esi\n"
671 " fs movl %7, %%edi\n"
674 " fs movl %%esp, %4\n"
675 " fs movl %12, %%esp\n"
676 " fs movl %%eax, %0\n"
677 " fs movl %%ecx, %1\n"
678 " fs movl %%edx, %2\n"
679 " fs movl %%ebx, %3\n"
680 " fs movl %%ebp, %5\n"
681 " fs movl %%esi, %6\n"
682 " fs movl %%edi, %7\n"
685 " movl %%eax, %%ecx\n"
686 " andl $0x400, %%ecx\n"
688 " andl $0x8d5, %%eax\n"
689 " fs movl %%eax, %8\n"
691 " subl %%ecx, %%eax\n"
692 " fs movl %%eax, %11\n"
693 " fs movl %9, %%ebx\n" /* get T0 value */
696 : "m" (*(uint8_t *)offsetof(CPUState
, regs
[0])),
697 "m" (*(uint8_t *)offsetof(CPUState
, regs
[1])),
698 "m" (*(uint8_t *)offsetof(CPUState
, regs
[2])),
699 "m" (*(uint8_t *)offsetof(CPUState
, regs
[3])),
700 "m" (*(uint8_t *)offsetof(CPUState
, regs
[4])),
701 "m" (*(uint8_t *)offsetof(CPUState
, regs
[5])),
702 "m" (*(uint8_t *)offsetof(CPUState
, regs
[6])),
703 "m" (*(uint8_t *)offsetof(CPUState
, regs
[7])),
704 "m" (*(uint8_t *)offsetof(CPUState
, cc_src
)),
705 "m" (*(uint8_t *)offsetof(CPUState
, tmp0
)),
707 "m" (*(uint8_t *)offsetof(CPUState
, df
)),
708 "m" (*(uint8_t *)offsetof(CPUState
, saved_esp
))
713 #elif defined(__ia64)
720 fp
.gp
= code_gen_buffer
+ 2 * (1 << 20);
721 (*(void (*)(void)) &fp
)();
725 env
->current_tb
= NULL
;
726 /* reset soft MMU for next block (it can currently
727 only be set by a memory fault) */
728 #if defined(TARGET_I386) && !defined(CONFIG_SOFTMMU)
729 if (env
->hflags
& HF_SOFTMMU_MASK
) {
730 env
->hflags
&= ~HF_SOFTMMU_MASK
;
731 /* do not allow linking to another block */
735 #if defined(USE_KQEMU)
736 #define MIN_CYCLE_BEFORE_SWITCH (100 * 1000)
737 if (kqemu_is_ok(env
) &&
738 (cpu_get_time_fast() - env
->last_io_time
) >= MIN_CYCLE_BEFORE_SWITCH
) {
749 #if defined(TARGET_I386)
750 #if defined(USE_CODE_COPY)
751 if (env
->native_fp_regs
) {
752 save_native_fp_state(env
);
755 /* restore flags in standard format */
756 env
->eflags
= env
->eflags
| cc_table
[CC_OP
].compute_all() | (DF
& DF_MASK
);
757 #elif defined(TARGET_ARM)
758 /* XXX: Save/restore host fpu exception state?. */
759 #elif defined(TARGET_SPARC)
760 #if defined(reg_REGWPTR)
761 REGWPTR
= saved_regwptr
;
763 #elif defined(TARGET_PPC)
764 #elif defined(TARGET_M68K)
765 cpu_m68k_flush_flags(env
, env
->cc_op
);
766 env
->cc_op
= CC_OP_FLAGS
;
767 env
->sr
= (env
->sr
& 0xffe0)
768 | env
->cc_dest
| (env
->cc_x
<< 4);
769 #elif defined(TARGET_MIPS)
770 #elif defined(TARGET_SH4)
771 #elif defined(TARGET_ALPHA)
774 #error unsupported target CPU
777 /* restore global registers */
778 #if defined(__sparc__) && !defined(HOST_SOLARIS)
779 asm volatile ("mov %0, %%i7" : : "r" (saved_i7
));
781 #include "hostregs_helper.h"
783 /* fail safe : never use cpu_single_env outside cpu_exec() */
784 cpu_single_env
= NULL
;
788 /* must only be called from the generated code as an exception can be
790 void tb_invalidate_page_range(target_ulong start
, target_ulong end
)
792 /* XXX: cannot enable it yet because it yields to MMU exception
793 where NIP != read address on PowerPC */
795 target_ulong phys_addr
;
796 phys_addr
= get_phys_addr_code(env
, start
);
797 tb_invalidate_phys_page_range(phys_addr
, phys_addr
+ end
- start
, 0);
801 #if defined(TARGET_I386) && defined(CONFIG_USER_ONLY)
803 void cpu_x86_load_seg(CPUX86State
*s
, int seg_reg
, int selector
)
805 CPUX86State
*saved_env
;
809 if (!(env
->cr
[0] & CR0_PE_MASK
) || (env
->eflags
& VM_MASK
)) {
811 cpu_x86_load_seg_cache(env
, seg_reg
, selector
,
812 (selector
<< 4), 0xffff, 0);
814 load_seg(seg_reg
, selector
);
819 void cpu_x86_fsave(CPUX86State
*s
, uint8_t *ptr
, int data32
)
821 CPUX86State
*saved_env
;
826 helper_fsave((target_ulong
)ptr
, data32
);
831 void cpu_x86_frstor(CPUX86State
*s
, uint8_t *ptr
, int data32
)
833 CPUX86State
*saved_env
;
838 helper_frstor((target_ulong
)ptr
, data32
);
843 #endif /* TARGET_I386 */
845 #if !defined(CONFIG_SOFTMMU)
847 #if defined(TARGET_I386)
849 /* 'pc' is the host PC at which the exception was raised. 'address' is
850 the effective address of the memory exception. 'is_write' is 1 if a
851 write caused the exception and otherwise 0'. 'old_set' is the
852 signal set which should be restored */
853 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
854 int is_write
, sigset_t
*old_set
,
857 TranslationBlock
*tb
;
861 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
862 #if defined(DEBUG_SIGNAL)
863 qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
864 pc
, address
, is_write
, *(unsigned long *)old_set
);
866 /* XXX: locking issue */
867 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
871 /* see if it is an MMU fault */
872 ret
= cpu_x86_handle_mmu_fault(env
, address
, is_write
,
873 ((env
->hflags
& HF_CPL_MASK
) == 3), 0);
875 return 0; /* not an MMU fault */
877 return 1; /* the MMU fault was handled without causing real CPU fault */
878 /* now we have a real cpu fault */
881 /* the PC is inside the translated code. It means that we have
882 a virtual CPU fault */
883 cpu_restore_state(tb
, env
, pc
, puc
);
887 printf("PF exception: EIP=0x%08x CR2=0x%08x error=0x%x\n",
888 env
->eip
, env
->cr
[2], env
->error_code
);
890 /* we restore the process signal mask as the sigreturn should
891 do it (XXX: use sigsetjmp) */
892 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
893 raise_exception_err(env
->exception_index
, env
->error_code
);
895 /* activate soft MMU for this block */
896 env
->hflags
|= HF_SOFTMMU_MASK
;
897 cpu_resume_from_signal(env
, puc
);
899 /* never comes here */
903 #elif defined(TARGET_ARM)
904 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
905 int is_write
, sigset_t
*old_set
,
908 TranslationBlock
*tb
;
912 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
913 #if defined(DEBUG_SIGNAL)
914 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
915 pc
, address
, is_write
, *(unsigned long *)old_set
);
917 /* XXX: locking issue */
918 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
921 /* see if it is an MMU fault */
922 ret
= cpu_arm_handle_mmu_fault(env
, address
, is_write
, 1, 0);
924 return 0; /* not an MMU fault */
926 return 1; /* the MMU fault was handled without causing real CPU fault */
927 /* now we have a real cpu fault */
930 /* the PC is inside the translated code. It means that we have
931 a virtual CPU fault */
932 cpu_restore_state(tb
, env
, pc
, puc
);
934 /* we restore the process signal mask as the sigreturn should
935 do it (XXX: use sigsetjmp) */
936 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
939 #elif defined(TARGET_SPARC)
940 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
941 int is_write
, sigset_t
*old_set
,
944 TranslationBlock
*tb
;
948 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
949 #if defined(DEBUG_SIGNAL)
950 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
951 pc
, address
, is_write
, *(unsigned long *)old_set
);
953 /* XXX: locking issue */
954 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
957 /* see if it is an MMU fault */
958 ret
= cpu_sparc_handle_mmu_fault(env
, address
, is_write
, 1, 0);
960 return 0; /* not an MMU fault */
962 return 1; /* the MMU fault was handled without causing real CPU fault */
963 /* now we have a real cpu fault */
966 /* the PC is inside the translated code. It means that we have
967 a virtual CPU fault */
968 cpu_restore_state(tb
, env
, pc
, puc
);
970 /* we restore the process signal mask as the sigreturn should
971 do it (XXX: use sigsetjmp) */
972 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
975 #elif defined (TARGET_PPC)
976 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
977 int is_write
, sigset_t
*old_set
,
980 TranslationBlock
*tb
;
984 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
985 #if defined(DEBUG_SIGNAL)
986 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
987 pc
, address
, is_write
, *(unsigned long *)old_set
);
989 /* XXX: locking issue */
990 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
994 /* see if it is an MMU fault */
995 ret
= cpu_ppc_handle_mmu_fault(env
, address
, is_write
, msr_pr
, 0);
997 return 0; /* not an MMU fault */
999 return 1; /* the MMU fault was handled without causing real CPU fault */
1001 /* now we have a real cpu fault */
1002 tb
= tb_find_pc(pc
);
1004 /* the PC is inside the translated code. It means that we have
1005 a virtual CPU fault */
1006 cpu_restore_state(tb
, env
, pc
, puc
);
1010 printf("PF exception: NIP=0x%08x error=0x%x %p\n",
1011 env
->nip
, env
->error_code
, tb
);
1013 /* we restore the process signal mask as the sigreturn should
1014 do it (XXX: use sigsetjmp) */
1015 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
1016 do_raise_exception_err(env
->exception_index
, env
->error_code
);
1018 /* activate soft MMU for this block */
1019 cpu_resume_from_signal(env
, puc
);
1021 /* never comes here */
1025 #elif defined(TARGET_M68K)
1026 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
1027 int is_write
, sigset_t
*old_set
,
1030 TranslationBlock
*tb
;
1034 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
1035 #if defined(DEBUG_SIGNAL)
1036 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
1037 pc
, address
, is_write
, *(unsigned long *)old_set
);
1039 /* XXX: locking issue */
1040 if (is_write
&& page_unprotect(address
, pc
, puc
)) {
1043 /* see if it is an MMU fault */
1044 ret
= cpu_m68k_handle_mmu_fault(env
, address
, is_write
, 1, 0);
1046 return 0; /* not an MMU fault */
1048 return 1; /* the MMU fault was handled without causing real CPU fault */
1049 /* now we have a real cpu fault */
1050 tb
= tb_find_pc(pc
);
1052 /* the PC is inside the translated code. It means that we have
1053 a virtual CPU fault */
1054 cpu_restore_state(tb
, env
, pc
, puc
);
1056 /* we restore the process signal mask as the sigreturn should
1057 do it (XXX: use sigsetjmp) */
1058 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
1060 /* never comes here */
1064 #elif defined (TARGET_MIPS)
1065 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
1066 int is_write
, sigset_t
*old_set
,
1069 TranslationBlock
*tb
;
1073 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
1074 #if defined(DEBUG_SIGNAL)
1075 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
1076 pc
, address
, is_write
, *(unsigned long *)old_set
);
1078 /* XXX: locking issue */
1079 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
1083 /* see if it is an MMU fault */
1084 ret
= cpu_mips_handle_mmu_fault(env
, address
, is_write
, 1, 0);
1086 return 0; /* not an MMU fault */
1088 return 1; /* the MMU fault was handled without causing real CPU fault */
1090 /* now we have a real cpu fault */
1091 tb
= tb_find_pc(pc
);
1093 /* the PC is inside the translated code. It means that we have
1094 a virtual CPU fault */
1095 cpu_restore_state(tb
, env
, pc
, puc
);
1099 printf("PF exception: PC=0x" TARGET_FMT_lx
" error=0x%x %p\n",
1100 env
->PC
, env
->error_code
, tb
);
1102 /* we restore the process signal mask as the sigreturn should
1103 do it (XXX: use sigsetjmp) */
1104 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
1105 do_raise_exception_err(env
->exception_index
, env
->error_code
);
1107 /* activate soft MMU for this block */
1108 cpu_resume_from_signal(env
, puc
);
1110 /* never comes here */
1114 #elif defined (TARGET_SH4)
1115 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
1116 int is_write
, sigset_t
*old_set
,
1119 TranslationBlock
*tb
;
1123 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
1124 #if defined(DEBUG_SIGNAL)
1125 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
1126 pc
, address
, is_write
, *(unsigned long *)old_set
);
1128 /* XXX: locking issue */
1129 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
1133 /* see if it is an MMU fault */
1134 ret
= cpu_sh4_handle_mmu_fault(env
, address
, is_write
, 1, 0);
1136 return 0; /* not an MMU fault */
1138 return 1; /* the MMU fault was handled without causing real CPU fault */
1140 /* now we have a real cpu fault */
1141 tb
= tb_find_pc(pc
);
1143 /* the PC is inside the translated code. It means that we have
1144 a virtual CPU fault */
1145 cpu_restore_state(tb
, env
, pc
, puc
);
1148 printf("PF exception: NIP=0x%08x error=0x%x %p\n",
1149 env
->nip
, env
->error_code
, tb
);
1151 /* we restore the process signal mask as the sigreturn should
1152 do it (XXX: use sigsetjmp) */
1153 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
1155 /* never comes here */
1159 #elif defined (TARGET_ALPHA)
1160 static inline int handle_cpu_signal(unsigned long pc
, unsigned long address
,
1161 int is_write
, sigset_t
*old_set
,
1164 TranslationBlock
*tb
;
1168 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
1169 #if defined(DEBUG_SIGNAL)
1170 printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
1171 pc
, address
, is_write
, *(unsigned long *)old_set
);
1173 /* XXX: locking issue */
1174 if (is_write
&& page_unprotect(h2g(address
), pc
, puc
)) {
1178 /* see if it is an MMU fault */
1179 ret
= cpu_alpha_handle_mmu_fault(env
, address
, is_write
, 1, 0);
1181 return 0; /* not an MMU fault */
1183 return 1; /* the MMU fault was handled without causing real CPU fault */
1185 /* now we have a real cpu fault */
1186 tb
= tb_find_pc(pc
);
1188 /* the PC is inside the translated code. It means that we have
1189 a virtual CPU fault */
1190 cpu_restore_state(tb
, env
, pc
, puc
);
1193 printf("PF exception: NIP=0x%08x error=0x%x %p\n",
1194 env
->nip
, env
->error_code
, tb
);
1196 /* we restore the process signal mask as the sigreturn should
1197 do it (XXX: use sigsetjmp) */
1198 sigprocmask(SIG_SETMASK
, old_set
, NULL
);
1200 /* never comes here */
1204 #error unsupported target CPU
1207 #if defined(__i386__)
1209 #if defined(__APPLE__)
1210 # include <sys/ucontext.h>
1212 # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->ss.eip))
1213 # define TRAP_sig(context) ((context)->uc_mcontext->es.trapno)
1214 # define ERROR_sig(context) ((context)->uc_mcontext->es.err)
1216 # define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP])
1217 # define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
1218 # define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
1221 #if defined(USE_CODE_COPY)
1222 static void cpu_send_trap(unsigned long pc
, int trap
,
1223 struct ucontext
*uc
)
1225 TranslationBlock
*tb
;
1228 env
= cpu_single_env
; /* XXX: find a correct solution for multithread */
1229 /* now we have a real cpu fault */
1230 tb
= tb_find_pc(pc
);
1232 /* the PC is inside the translated code. It means that we have
1233 a virtual CPU fault */
1234 cpu_restore_state(tb
, env
, pc
, uc
);
1236 sigprocmask(SIG_SETMASK
, &uc
->uc_sigmask
, NULL
);
1237 raise_exception_err(trap
, env
->error_code
);
1241 int cpu_signal_handler(int host_signum
, void *pinfo
,
1244 siginfo_t
*info
= pinfo
;
1245 struct ucontext
*uc
= puc
;
1253 #define REG_TRAPNO TRAPNO
1256 trapno
= TRAP_sig(uc
);
1257 #if defined(TARGET_I386) && defined(USE_CODE_COPY)
1258 if (trapno
== 0x00 || trapno
== 0x05) {
1259 /* send division by zero or bound exception */
1260 cpu_send_trap(pc
, trapno
, uc
);
1264 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1266 (ERROR_sig(uc
) >> 1) & 1 : 0,
1267 &uc
->uc_sigmask
, puc
);
1270 #elif defined(__x86_64__)
1272 int cpu_signal_handler(int host_signum
, void *pinfo
,
1275 siginfo_t
*info
= pinfo
;
1276 struct ucontext
*uc
= puc
;
1279 pc
= uc
->uc_mcontext
.gregs
[REG_RIP
];
1280 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1281 uc
->uc_mcontext
.gregs
[REG_TRAPNO
] == 0xe ?
1282 (uc
->uc_mcontext
.gregs
[REG_ERR
] >> 1) & 1 : 0,
1283 &uc
->uc_sigmask
, puc
);
1286 #elif defined(__powerpc__)
1288 /***********************************************************************
1289 * signal context platform-specific definitions
1293 /* All Registers access - only for local access */
1294 # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
1295 /* Gpr Registers access */
1296 # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
1297 # define IAR_sig(context) REG_sig(nip, context) /* Program counter */
1298 # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
1299 # define CTR_sig(context) REG_sig(ctr, context) /* Count register */
1300 # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
1301 # define LR_sig(context) REG_sig(link, context) /* Link register */
1302 # define CR_sig(context) REG_sig(ccr, context) /* Condition register */
1303 /* Float Registers access */
1304 # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
1305 # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
1306 /* Exception Registers access */
1307 # define DAR_sig(context) REG_sig(dar, context)
1308 # define DSISR_sig(context) REG_sig(dsisr, context)
1309 # define TRAP_sig(context) REG_sig(trap, context)
1313 # include <sys/ucontext.h>
1314 typedef struct ucontext SIGCONTEXT
;
1315 /* All Registers access - only for local access */
1316 # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
1317 # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
1318 # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
1319 # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
1320 /* Gpr Registers access */
1321 # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
1322 # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
1323 # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
1324 # define CTR_sig(context) REG_sig(ctr, context)
1325 # define XER_sig(context) REG_sig(xer, context) /* Link register */
1326 # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
1327 # define CR_sig(context) REG_sig(cr, context) /* Condition register */
1328 /* Float Registers access */
1329 # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
1330 # define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context))
1331 /* Exception Registers access */
1332 # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
1333 # define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
1334 # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
1335 #endif /* __APPLE__ */
1337 int cpu_signal_handler(int host_signum
, void *pinfo
,
1340 siginfo_t
*info
= pinfo
;
1341 struct ucontext
*uc
= puc
;
1349 if (DSISR_sig(uc
) & 0x00800000)
1352 if (TRAP_sig(uc
) != 0x400 && (DSISR_sig(uc
) & 0x02000000))
1355 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1356 is_write
, &uc
->uc_sigmask
, puc
);
1359 #elif defined(__alpha__)
1361 int cpu_signal_handler(int host_signum
, void *pinfo
,
1364 siginfo_t
*info
= pinfo
;
1365 struct ucontext
*uc
= puc
;
1366 uint32_t *pc
= uc
->uc_mcontext
.sc_pc
;
1367 uint32_t insn
= *pc
;
1370 /* XXX: need kernel patch to get write flag faster */
1371 switch (insn
>> 26) {
1386 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1387 is_write
, &uc
->uc_sigmask
, puc
);
1389 #elif defined(__sparc__)
1391 int cpu_signal_handler(int host_signum
, void *pinfo
,
1394 siginfo_t
*info
= pinfo
;
1395 uint32_t *regs
= (uint32_t *)(info
+ 1);
1396 void *sigmask
= (regs
+ 20);
1401 /* XXX: is there a standard glibc define ? */
1403 /* XXX: need kernel patch to get write flag faster */
1405 insn
= *(uint32_t *)pc
;
1406 if ((insn
>> 30) == 3) {
1407 switch((insn
>> 19) & 0x3f) {
1419 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1420 is_write
, sigmask
, NULL
);
1423 #elif defined(__arm__)
1425 int cpu_signal_handler(int host_signum
, void *pinfo
,
1428 siginfo_t
*info
= pinfo
;
1429 struct ucontext
*uc
= puc
;
1433 pc
= uc
->uc_mcontext
.gregs
[R15
];
1434 /* XXX: compute is_write */
1436 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1438 &uc
->uc_sigmask
, puc
);
1441 #elif defined(__mc68000)
1443 int cpu_signal_handler(int host_signum
, void *pinfo
,
1446 siginfo_t
*info
= pinfo
;
1447 struct ucontext
*uc
= puc
;
1451 pc
= uc
->uc_mcontext
.gregs
[16];
1452 /* XXX: compute is_write */
1454 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1456 &uc
->uc_sigmask
, puc
);
1459 #elif defined(__ia64)
1462 /* This ought to be in <bits/siginfo.h>... */
1463 # define __ISR_VALID 1
1466 int cpu_signal_handler(int host_signum
, void *pinfo
, void *puc
)
1468 siginfo_t
*info
= pinfo
;
1469 struct ucontext
*uc
= puc
;
1473 ip
= uc
->uc_mcontext
.sc_ip
;
1474 switch (host_signum
) {
1480 if (info
->si_code
&& (info
->si_segvflags
& __ISR_VALID
))
1481 /* ISR.W (write-access) is bit 33: */
1482 is_write
= (info
->si_isr
>> 33) & 1;
1488 return handle_cpu_signal(ip
, (unsigned long)info
->si_addr
,
1490 &uc
->uc_sigmask
, puc
);
1493 #elif defined(__s390__)
1495 int cpu_signal_handler(int host_signum
, void *pinfo
,
1498 siginfo_t
*info
= pinfo
;
1499 struct ucontext
*uc
= puc
;
1503 pc
= uc
->uc_mcontext
.psw
.addr
;
1504 /* XXX: compute is_write */
1506 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1507 is_write
, &uc
->uc_sigmask
, puc
);
1510 #elif defined(__mips__)
1512 int cpu_signal_handler(int host_signum
, void *pinfo
,
1515 siginfo_t
*info
= pinfo
;
1516 struct ucontext
*uc
= puc
;
1517 greg_t pc
= uc
->uc_mcontext
.pc
;
1520 /* XXX: compute is_write */
1522 return handle_cpu_signal(pc
, (unsigned long)info
->si_addr
,
1523 is_write
, &uc
->uc_sigmask
, puc
);
1528 #error host CPU specific signal handler needed
1532 #endif /* !defined(CONFIG_SOFTMMU) */