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2 * i386 micro operations
4 * Copyright (c) 2003 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
20 #include "exec-i386.h"
22 /* n must be a constant to be efficient */
23 static inline int lshift(int x
, int n
)
31 /* we define the various pieces of code used by the JIT */
35 #include "opreg_template.h"
41 #include "opreg_template.h"
47 #include "opreg_template.h"
53 #include "opreg_template.h"
59 #include "opreg_template.h"
65 #include "opreg_template.h"
71 #include "opreg_template.h"
77 #include "opreg_template.h"
81 /* operations with flags */
83 /* update flags with T0 and T1 (add/sub case) */
84 void OPPROTO
op_update2_cc(void)
90 /* update flags with T0 (logic operation case) */
91 void OPPROTO
op_update1_cc(void)
96 void OPPROTO
op_update_neg_cc(void)
102 void OPPROTO
op_cmpl_T0_T1_cc(void)
108 void OPPROTO
op_update_inc_cc(void)
110 CC_SRC
= cc_table
[CC_OP
].compute_c();
114 void OPPROTO
op_testl_T0_T1_cc(void)
119 /* operations without flags */
121 void OPPROTO
op_addl_T0_T1(void)
126 void OPPROTO
op_orl_T0_T1(void)
131 void OPPROTO
op_andl_T0_T1(void)
136 void OPPROTO
op_subl_T0_T1(void)
141 void OPPROTO
op_xorl_T0_T1(void)
146 void OPPROTO
op_negl_T0(void)
151 void OPPROTO
op_incl_T0(void)
156 void OPPROTO
op_decl_T0(void)
161 void OPPROTO
op_notl_T0(void)
166 void OPPROTO
op_bswapl_T0(void)
171 /* multiply/divide */
172 void OPPROTO
op_mulb_AL_T0(void)
175 res
= (uint8_t)EAX
* (uint8_t)T0
;
176 EAX
= (EAX
& 0xffff0000) | res
;
177 CC_SRC
= (res
& 0xff00);
180 void OPPROTO
op_imulb_AL_T0(void)
183 res
= (int8_t)EAX
* (int8_t)T0
;
184 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
185 CC_SRC
= (res
!= (int8_t)res
);
188 void OPPROTO
op_mulw_AX_T0(void)
191 res
= (uint16_t)EAX
* (uint16_t)T0
;
192 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
193 EDX
= (EDX
& 0xffff0000) | ((res
>> 16) & 0xffff);
197 void OPPROTO
op_imulw_AX_T0(void)
200 res
= (int16_t)EAX
* (int16_t)T0
;
201 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
202 EDX
= (EDX
& 0xffff0000) | ((res
>> 16) & 0xffff);
203 CC_SRC
= (res
!= (int16_t)res
);
206 void OPPROTO
op_mull_EAX_T0(void)
209 res
= (uint64_t)((uint32_t)EAX
) * (uint64_t)((uint32_t)T0
);
215 void OPPROTO
op_imull_EAX_T0(void)
218 res
= (int64_t)((int32_t)EAX
) * (int64_t)((int32_t)T0
);
221 CC_SRC
= (res
!= (int32_t)res
);
224 void OPPROTO
op_imulw_T0_T1(void)
227 res
= (int16_t)T0
* (int16_t)T1
;
229 CC_SRC
= (res
!= (int16_t)res
);
232 void OPPROTO
op_imull_T0_T1(void)
235 res
= (int64_t)((int32_t)T0
) * (int64_t)((int32_t)T1
);
237 CC_SRC
= (res
!= (int32_t)res
);
240 /* division, flags are undefined */
241 /* XXX: add exceptions for overflow */
243 void OPPROTO
op_divb_AL_T0(void)
245 unsigned int num
, den
, q
, r
;
247 num
= (EAX
& 0xffff);
251 raise_exception(EXCP00_DIVZ
);
253 q
= (num
/ den
) & 0xff;
254 r
= (num
% den
) & 0xff;
255 EAX
= (EAX
& 0xffff0000) | (r
<< 8) | q
;
258 void OPPROTO
op_idivb_AL_T0(void)
266 raise_exception(EXCP00_DIVZ
);
268 q
= (num
/ den
) & 0xff;
269 r
= (num
% den
) & 0xff;
270 EAX
= (EAX
& 0xffff0000) | (r
<< 8) | q
;
273 void OPPROTO
op_divw_AX_T0(void)
275 unsigned int num
, den
, q
, r
;
277 num
= (EAX
& 0xffff) | ((EDX
& 0xffff) << 16);
281 raise_exception(EXCP00_DIVZ
);
283 q
= (num
/ den
) & 0xffff;
284 r
= (num
% den
) & 0xffff;
285 EAX
= (EAX
& 0xffff0000) | q
;
286 EDX
= (EDX
& 0xffff0000) | r
;
289 void OPPROTO
op_idivw_AX_T0(void)
293 num
= (EAX
& 0xffff) | ((EDX
& 0xffff) << 16);
297 raise_exception(EXCP00_DIVZ
);
299 q
= (num
/ den
) & 0xffff;
300 r
= (num
% den
) & 0xffff;
301 EAX
= (EAX
& 0xffff0000) | q
;
302 EDX
= (EDX
& 0xffff0000) | r
;
305 void OPPROTO
op_divl_EAX_T0(void)
307 helper_divl_EAX_T0(PARAM1
);
310 void OPPROTO
op_idivl_EAX_T0(void)
312 helper_idivl_EAX_T0(PARAM1
);
315 /* constant load & misc op */
317 void OPPROTO
op_movl_T0_im(void)
322 void OPPROTO
op_addl_T0_im(void)
327 void OPPROTO
op_andl_T0_ffff(void)
332 void OPPROTO
op_andl_T0_im(void)
337 void OPPROTO
op_movl_T0_T1(void)
342 void OPPROTO
op_movl_T1_im(void)
347 void OPPROTO
op_addl_T1_im(void)
352 void OPPROTO
op_movl_T1_A0(void)
357 void OPPROTO
op_movl_A0_im(void)
362 void OPPROTO
op_addl_A0_im(void)
367 void OPPROTO
op_addl_A0_AL(void)
372 void OPPROTO
op_andl_A0_ffff(void)
382 #define MEMSUFFIX _user
385 #define MEMSUFFIX _kernel
388 /* used for bit operations */
390 void OPPROTO
op_add_bitw_A0_T1(void)
392 A0
+= ((int32_t)T1
>> 4) << 1;
395 void OPPROTO
op_add_bitl_A0_T1(void)
397 A0
+= ((int32_t)T1
>> 5) << 2;
402 void OPPROTO
op_jmp_T0(void)
407 void OPPROTO
op_jmp_im(void)
412 void OPPROTO
op_hlt(void)
414 env
->exception_index
= EXCP_HLT
;
418 void OPPROTO
op_debug(void)
420 env
->exception_index
= EXCP_DEBUG
;
424 void OPPROTO
op_raise_interrupt(void)
427 unsigned int next_eip
;
430 raise_interrupt(intno
, 1, 0, next_eip
);
433 void OPPROTO
op_raise_exception(void)
436 exception_index
= PARAM1
;
437 raise_exception(exception_index
);
440 void OPPROTO
op_into(void)
443 eflags
= cc_table
[CC_OP
].compute_all();
445 raise_interrupt(EXCP04_INTO
, 1, 0, PARAM1
);
450 void OPPROTO
op_cli(void)
452 env
->eflags
&= ~IF_MASK
;
455 void OPPROTO
op_sti(void)
457 env
->eflags
|= IF_MASK
;
461 /* vm86plus instructions */
462 void OPPROTO
op_cli_vm(void)
464 env
->eflags
&= ~VIF_MASK
;
467 void OPPROTO
op_sti_vm(void)
469 env
->eflags
|= VIF_MASK
;
470 if (env
->eflags
& VIP_MASK
) {
472 raise_exception(EXCP0D_GPF
);
478 void OPPROTO
op_boundw(void)
481 low
= ldsw((uint8_t *)A0
);
482 high
= ldsw((uint8_t *)A0
+ 2);
484 if (v
< low
|| v
> high
) {
486 raise_exception(EXCP05_BOUND
);
491 void OPPROTO
op_boundl(void)
494 low
= ldl((uint8_t *)A0
);
495 high
= ldl((uint8_t *)A0
+ 4);
497 if (v
< low
|| v
> high
) {
499 raise_exception(EXCP05_BOUND
);
504 void OPPROTO
op_cmpxchg8b(void)
509 void OPPROTO
op_jmp_tb_next(void)
511 JUMP_TB(op_jmp_tb_next
, PARAM1
, 0, PARAM2
);
514 void OPPROTO
op_movl_T0_0(void)
519 void OPPROTO
op_exit_tb(void)
524 /* multiple size ops */
529 #include "ops_template.h"
533 #include "ops_template.h"
537 #include "ops_template.h"
542 void OPPROTO
op_movsbl_T0_T0(void)
547 void OPPROTO
op_movzbl_T0_T0(void)
552 void OPPROTO
op_movswl_T0_T0(void)
557 void OPPROTO
op_movzwl_T0_T0(void)
562 void OPPROTO
op_movswl_EAX_AX(void)
567 void OPPROTO
op_movsbw_AX_AL(void)
569 EAX
= (EAX
& 0xffff0000) | ((int8_t)EAX
& 0xffff);
572 void OPPROTO
op_movslq_EDX_EAX(void)
574 EDX
= (int32_t)EAX
>> 31;
577 void OPPROTO
op_movswl_DX_AX(void)
579 EDX
= (EDX
& 0xffff0000) | (((int16_t)EAX
>> 15) & 0xffff);
582 /* string ops helpers */
584 void OPPROTO
op_addl_ESI_T0(void)
589 void OPPROTO
op_addw_ESI_T0(void)
591 ESI
= (ESI
& ~0xffff) | ((ESI
+ T0
) & 0xffff);
594 void OPPROTO
op_addl_EDI_T0(void)
599 void OPPROTO
op_addw_EDI_T0(void)
601 EDI
= (EDI
& ~0xffff) | ((EDI
+ T0
) & 0xffff);
604 void OPPROTO
op_decl_ECX(void)
609 void OPPROTO
op_decw_ECX(void)
611 ECX
= (ECX
& ~0xffff) | ((ECX
- 1) & 0xffff);
616 void op_pushl_T0(void)
620 stl((void *)offset
, T0
);
621 /* modify ESP after to handle exceptions correctly */
625 void op_pushw_T0(void)
629 stw((void *)offset
, T0
);
630 /* modify ESP after to handle exceptions correctly */
634 void op_pushl_ss32_T0(void)
638 stl(env
->segs
[R_SS
].base
+ offset
, T0
);
639 /* modify ESP after to handle exceptions correctly */
643 void op_pushw_ss32_T0(void)
647 stw(env
->segs
[R_SS
].base
+ offset
, T0
);
648 /* modify ESP after to handle exceptions correctly */
652 void op_pushl_ss16_T0(void)
655 offset
= (ESP
- 4) & 0xffff;
656 stl(env
->segs
[R_SS
].base
+ offset
, T0
);
657 /* modify ESP after to handle exceptions correctly */
658 ESP
= (ESP
& ~0xffff) | offset
;
661 void op_pushw_ss16_T0(void)
664 offset
= (ESP
- 2) & 0xffff;
665 stw(env
->segs
[R_SS
].base
+ offset
, T0
);
666 /* modify ESP after to handle exceptions correctly */
667 ESP
= (ESP
& ~0xffff) | offset
;
670 /* NOTE: ESP update is done after */
671 void op_popl_T0(void)
673 T0
= ldl((void *)ESP
);
676 void op_popw_T0(void)
678 T0
= lduw((void *)ESP
);
681 void op_popl_ss32_T0(void)
683 T0
= ldl(env
->segs
[R_SS
].base
+ ESP
);
686 void op_popw_ss32_T0(void)
688 T0
= lduw(env
->segs
[R_SS
].base
+ ESP
);
691 void op_popl_ss16_T0(void)
693 T0
= ldl(env
->segs
[R_SS
].base
+ (ESP
& 0xffff));
696 void op_popw_ss16_T0(void)
698 T0
= lduw(env
->segs
[R_SS
].base
+ (ESP
& 0xffff));
701 void op_addl_ESP_4(void)
706 void op_addl_ESP_2(void)
711 void op_addw_ESP_4(void)
713 ESP
= (ESP
& ~0xffff) | ((ESP
+ 4) & 0xffff);
716 void op_addw_ESP_2(void)
718 ESP
= (ESP
& ~0xffff) | ((ESP
+ 2) & 0xffff);
721 void op_addl_ESP_im(void)
726 void op_addw_ESP_im(void)
728 ESP
= (ESP
& ~0xffff) | ((ESP
+ PARAM1
) & 0xffff);
731 void OPPROTO
op_rdtsc(void)
736 void OPPROTO
op_cpuid(void)
741 void OPPROTO
op_rdmsr(void)
746 void OPPROTO
op_wrmsr(void)
754 void OPPROTO
op_aam(void)
761 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
765 void OPPROTO
op_aad(void)
770 ah
= (EAX
>> 8) & 0xff;
771 al
= ((ah
* base
) + al
) & 0xff;
772 EAX
= (EAX
& ~0xffff) | al
;
776 void OPPROTO
op_aaa(void)
782 eflags
= cc_table
[CC_OP
].compute_all();
785 ah
= (EAX
>> 8) & 0xff;
787 icarry
= (al
> 0xf9);
788 if (((al
& 0x0f) > 9 ) || af
) {
789 al
= (al
+ 6) & 0x0f;
790 ah
= (ah
+ 1 + icarry
) & 0xff;
791 eflags
|= CC_C
| CC_A
;
793 eflags
&= ~(CC_C
| CC_A
);
796 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
800 void OPPROTO
op_aas(void)
806 eflags
= cc_table
[CC_OP
].compute_all();
809 ah
= (EAX
>> 8) & 0xff;
812 if (((al
& 0x0f) > 9 ) || af
) {
813 al
= (al
- 6) & 0x0f;
814 ah
= (ah
- 1 - icarry
) & 0xff;
815 eflags
|= CC_C
| CC_A
;
817 eflags
&= ~(CC_C
| CC_A
);
820 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
824 void OPPROTO
op_daa(void)
829 eflags
= cc_table
[CC_OP
].compute_all();
835 if (((al
& 0x0f) > 9 ) || af
) {
836 al
= (al
+ 6) & 0xff;
839 if ((al
> 0x9f) || cf
) {
840 al
= (al
+ 0x60) & 0xff;
843 EAX
= (EAX
& ~0xff) | al
;
844 /* well, speed is not an issue here, so we compute the flags by hand */
845 eflags
|= (al
== 0) << 6; /* zf */
846 eflags
|= parity_table
[al
]; /* pf */
847 eflags
|= (al
& 0x80); /* sf */
851 void OPPROTO
op_das(void)
856 eflags
= cc_table
[CC_OP
].compute_all();
863 if (((al
& 0x0f) > 9 ) || af
) {
867 al
= (al
- 6) & 0xff;
869 if ((al1
> 0x99) || cf
) {
870 al
= (al
- 0x60) & 0xff;
873 EAX
= (EAX
& ~0xff) | al
;
874 /* well, speed is not an issue here, so we compute the flags by hand */
875 eflags
|= (al
== 0) << 6; /* zf */
876 eflags
|= parity_table
[al
]; /* pf */
877 eflags
|= (al
& 0x80); /* sf */
881 /* segment handling */
883 void OPPROTO
op_movl_seg_T0(void)
885 load_seg(PARAM1
, T0
& 0xffff, PARAM2
);
888 /* faster VM86 version */
889 void OPPROTO
op_movl_seg_T0_vm(void)
894 selector
= T0
& 0xffff;
895 /* env->segs[] access */
896 sc
= (SegmentCache
*)((char *)env
+ PARAM1
);
897 sc
->selector
= selector
;
898 sc
->base
= (void *)(selector
<< 4);
901 void OPPROTO
op_movl_T0_seg(void)
903 T0
= env
->segs
[PARAM1
].selector
;
906 void OPPROTO
op_movl_A0_seg(void)
908 A0
= *(unsigned long *)((char *)env
+ PARAM1
);
911 void OPPROTO
op_addl_A0_seg(void)
913 A0
+= *(unsigned long *)((char *)env
+ PARAM1
);
916 void OPPROTO
op_lsl(void)
921 void OPPROTO
op_lar(void)
926 /* T0: segment, T1:eip */
927 void OPPROTO
op_ljmp_protected_T0_T1(void)
929 helper_ljmp_protected_T0_T1();
932 void OPPROTO
op_lcall_real_T0_T1(void)
934 helper_lcall_real_T0_T1(PARAM1
, PARAM2
);
937 void OPPROTO
op_lcall_protected_T0_T1(void)
939 helper_lcall_protected_T0_T1(PARAM1
, PARAM2
);
942 void OPPROTO
op_iret_real(void)
944 helper_iret_real(PARAM1
);
947 void OPPROTO
op_iret_protected(void)
949 helper_iret_protected(PARAM1
);
952 void OPPROTO
op_lret_protected(void)
954 helper_lret_protected(PARAM1
, PARAM2
);
957 void OPPROTO
op_lldt_T0(void)
962 void OPPROTO
op_ltr_T0(void)
967 /* CR registers access */
968 void OPPROTO
op_movl_crN_T0(void)
970 helper_movl_crN_T0(PARAM1
);
973 /* DR registers access */
974 void OPPROTO
op_movl_drN_T0(void)
976 helper_movl_drN_T0(PARAM1
);
979 void OPPROTO
op_lmsw_T0(void)
981 /* only 4 lower bits of CR0 are modified */
982 T0
= (env
->cr
[0] & ~0xf) | (T0
& 0xf);
983 helper_movl_crN_T0(0);
986 void OPPROTO
op_invlpg_A0(void)
991 void OPPROTO
op_movl_T0_env(void)
993 T0
= *(uint32_t *)((char *)env
+ PARAM1
);
996 void OPPROTO
op_movl_env_T0(void)
998 *(uint32_t *)((char *)env
+ PARAM1
) = T0
;
1001 void OPPROTO
op_movl_env_T1(void)
1003 *(uint32_t *)((char *)env
+ PARAM1
) = T1
;
1006 void OPPROTO
op_clts(void)
1008 env
->cr
[0] &= ~CR0_TS_MASK
;
1011 /* flags handling */
1013 /* slow jumps cases : in order to avoid calling a function with a
1014 pointer (which can generate a stack frame on PowerPC), we use
1015 op_setcc to set T0 and then call op_jcc. */
1016 void OPPROTO
op_jcc(void)
1019 JUMP_TB(op_jcc
, PARAM1
, 0, PARAM2
);
1021 JUMP_TB(op_jcc
, PARAM1
, 1, PARAM3
);
1025 /* slow set cases (compute x86 flags) */
1026 void OPPROTO
op_seto_T0_cc(void)
1029 eflags
= cc_table
[CC_OP
].compute_all();
1030 T0
= (eflags
>> 11) & 1;
1033 void OPPROTO
op_setb_T0_cc(void)
1035 T0
= cc_table
[CC_OP
].compute_c();
1038 void OPPROTO
op_setz_T0_cc(void)
1041 eflags
= cc_table
[CC_OP
].compute_all();
1042 T0
= (eflags
>> 6) & 1;
1045 void OPPROTO
op_setbe_T0_cc(void)
1048 eflags
= cc_table
[CC_OP
].compute_all();
1049 T0
= (eflags
& (CC_Z
| CC_C
)) != 0;
1052 void OPPROTO
op_sets_T0_cc(void)
1055 eflags
= cc_table
[CC_OP
].compute_all();
1056 T0
= (eflags
>> 7) & 1;
1059 void OPPROTO
op_setp_T0_cc(void)
1062 eflags
= cc_table
[CC_OP
].compute_all();
1063 T0
= (eflags
>> 2) & 1;
1066 void OPPROTO
op_setl_T0_cc(void)
1069 eflags
= cc_table
[CC_OP
].compute_all();
1070 T0
= ((eflags
^ (eflags
>> 4)) >> 7) & 1;
1073 void OPPROTO
op_setle_T0_cc(void)
1076 eflags
= cc_table
[CC_OP
].compute_all();
1077 T0
= (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
)) != 0;
1080 void OPPROTO
op_xor_T0_1(void)
1085 void OPPROTO
op_set_cc_op(void)
1090 #define FL_UPDATE_MASK16 (FL_UPDATE_MASK32 & 0xffff)
1092 void OPPROTO
op_movl_eflags_T0(void)
1096 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1097 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1098 /* we also update some system flags as in user mode */
1099 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK32
) |
1100 (eflags
& FL_UPDATE_MASK32
);
1103 void OPPROTO
op_movw_eflags_T0(void)
1107 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1108 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1109 /* we also update some system flags as in user mode */
1110 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK16
) |
1111 (eflags
& FL_UPDATE_MASK16
);
1114 void OPPROTO
op_movl_eflags_T0_cpl0(void)
1116 load_eflags(T0
, FL_UPDATE_CPL0_MASK
);
1119 void OPPROTO
op_movw_eflags_T0_cpl0(void)
1121 load_eflags(T0
, FL_UPDATE_CPL0_MASK
& 0xffff);
1125 /* vm86plus version */
1126 void OPPROTO
op_movw_eflags_T0_vm(void)
1130 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1131 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1132 /* we also update some system flags as in user mode */
1133 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK16
| VIF_MASK
)) |
1134 (eflags
& FL_UPDATE_MASK16
);
1135 if (eflags
& IF_MASK
) {
1136 env
->eflags
|= VIF_MASK
;
1137 if (env
->eflags
& VIP_MASK
) {
1139 raise_exception(EXCP0D_GPF
);
1145 void OPPROTO
op_movl_eflags_T0_vm(void)
1149 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1150 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1151 /* we also update some system flags as in user mode */
1152 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK32
| VIF_MASK
)) |
1153 (eflags
& FL_UPDATE_MASK32
);
1154 if (eflags
& IF_MASK
) {
1155 env
->eflags
|= VIF_MASK
;
1156 if (env
->eflags
& VIP_MASK
) {
1158 raise_exception(EXCP0D_GPF
);
1165 /* XXX: compute only O flag */
1166 void OPPROTO
op_movb_eflags_T0(void)
1169 of
= cc_table
[CC_OP
].compute_all() & CC_O
;
1170 CC_SRC
= (T0
& (CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
)) | of
;
1173 void OPPROTO
op_movl_T0_eflags(void)
1176 eflags
= cc_table
[CC_OP
].compute_all();
1177 eflags
|= (DF
& DF_MASK
);
1178 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
);
1182 /* vm86plus version */
1184 void OPPROTO
op_movl_T0_eflags_vm(void)
1187 eflags
= cc_table
[CC_OP
].compute_all();
1188 eflags
|= (DF
& DF_MASK
);
1189 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
| IF_MASK
);
1190 if (env
->eflags
& VIF_MASK
)
1196 void OPPROTO
op_cld(void)
1201 void OPPROTO
op_std(void)
1206 void OPPROTO
op_clc(void)
1209 eflags
= cc_table
[CC_OP
].compute_all();
1214 void OPPROTO
op_stc(void)
1217 eflags
= cc_table
[CC_OP
].compute_all();
1222 void OPPROTO
op_cmc(void)
1225 eflags
= cc_table
[CC_OP
].compute_all();
1230 void OPPROTO
op_salc(void)
1233 cf
= cc_table
[CC_OP
].compute_c();
1234 EAX
= (EAX
& ~0xff) | ((-cf
) & 0xff);
1237 static int compute_all_eflags(void)
1242 static int compute_c_eflags(void)
1244 return CC_SRC
& CC_C
;
1247 static int compute_c_mul(void)
1254 static int compute_all_mul(void)
1256 int cf
, pf
, af
, zf
, sf
, of
;
1258 pf
= 0; /* undefined */
1259 af
= 0; /* undefined */
1260 zf
= 0; /* undefined */
1261 sf
= 0; /* undefined */
1263 return cf
| pf
| af
| zf
| sf
| of
;
1266 CCTable cc_table
[CC_OP_NB
] = {
1267 [CC_OP_DYNAMIC
] = { /* should never happen */ },
1269 [CC_OP_EFLAGS
] = { compute_all_eflags
, compute_c_eflags
},
1271 [CC_OP_MUL
] = { compute_all_mul
, compute_c_mul
},
1273 [CC_OP_ADDB
] = { compute_all_addb
, compute_c_addb
},
1274 [CC_OP_ADDW
] = { compute_all_addw
, compute_c_addw
},
1275 [CC_OP_ADDL
] = { compute_all_addl
, compute_c_addl
},
1277 [CC_OP_ADCB
] = { compute_all_adcb
, compute_c_adcb
},
1278 [CC_OP_ADCW
] = { compute_all_adcw
, compute_c_adcw
},
1279 [CC_OP_ADCL
] = { compute_all_adcl
, compute_c_adcl
},
1281 [CC_OP_SUBB
] = { compute_all_subb
, compute_c_subb
},
1282 [CC_OP_SUBW
] = { compute_all_subw
, compute_c_subw
},
1283 [CC_OP_SUBL
] = { compute_all_subl
, compute_c_subl
},
1285 [CC_OP_SBBB
] = { compute_all_sbbb
, compute_c_sbbb
},
1286 [CC_OP_SBBW
] = { compute_all_sbbw
, compute_c_sbbw
},
1287 [CC_OP_SBBL
] = { compute_all_sbbl
, compute_c_sbbl
},
1289 [CC_OP_LOGICB
] = { compute_all_logicb
, compute_c_logicb
},
1290 [CC_OP_LOGICW
] = { compute_all_logicw
, compute_c_logicw
},
1291 [CC_OP_LOGICL
] = { compute_all_logicl
, compute_c_logicl
},
1293 [CC_OP_INCB
] = { compute_all_incb
, compute_c_incl
},
1294 [CC_OP_INCW
] = { compute_all_incw
, compute_c_incl
},
1295 [CC_OP_INCL
] = { compute_all_incl
, compute_c_incl
},
1297 [CC_OP_DECB
] = { compute_all_decb
, compute_c_incl
},
1298 [CC_OP_DECW
] = { compute_all_decw
, compute_c_incl
},
1299 [CC_OP_DECL
] = { compute_all_decl
, compute_c_incl
},
1301 [CC_OP_SHLB
] = { compute_all_shlb
, compute_c_shlb
},
1302 [CC_OP_SHLW
] = { compute_all_shlw
, compute_c_shlw
},
1303 [CC_OP_SHLL
] = { compute_all_shll
, compute_c_shll
},
1305 [CC_OP_SARB
] = { compute_all_sarb
, compute_c_sarl
},
1306 [CC_OP_SARW
] = { compute_all_sarw
, compute_c_sarl
},
1307 [CC_OP_SARL
] = { compute_all_sarl
, compute_c_sarl
},
1310 /* floating point support. Some of the code for complicated x87
1311 functions comes from the LGPL'ed x86 emulator found in the Willows
1312 TWIN windows emulator. */
1314 #if defined(__powerpc__)
1315 extern CPU86_LDouble
copysign(CPU86_LDouble
, CPU86_LDouble
);
1317 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1318 double qemu_rint(double x
)
1320 double y
= 4503599627370496.0;
1331 #define rint qemu_rint
1336 void OPPROTO
op_flds_FT0_A0(void)
1338 #ifdef USE_FP_CONVERT
1339 FP_CONVERT
.i32
= ldl((void *)A0
);
1342 FT0
= ldfl((void *)A0
);
1346 void OPPROTO
op_fldl_FT0_A0(void)
1348 #ifdef USE_FP_CONVERT
1349 FP_CONVERT
.i64
= ldq((void *)A0
);
1352 FT0
= ldfq((void *)A0
);
1356 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1357 #ifdef USE_INT_TO_FLOAT_HELPERS
1359 void helper_fild_FT0_A0(void)
1361 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1364 void helper_fildl_FT0_A0(void)
1366 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1369 void helper_fildll_FT0_A0(void)
1371 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1374 void OPPROTO
op_fild_FT0_A0(void)
1376 helper_fild_FT0_A0();
1379 void OPPROTO
op_fildl_FT0_A0(void)
1381 helper_fildl_FT0_A0();
1384 void OPPROTO
op_fildll_FT0_A0(void)
1386 helper_fildll_FT0_A0();
1391 void OPPROTO
op_fild_FT0_A0(void)
1393 #ifdef USE_FP_CONVERT
1394 FP_CONVERT
.i32
= ldsw((void *)A0
);
1395 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1397 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1401 void OPPROTO
op_fildl_FT0_A0(void)
1403 #ifdef USE_FP_CONVERT
1404 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1405 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1407 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1411 void OPPROTO
op_fildll_FT0_A0(void)
1413 #ifdef USE_FP_CONVERT
1414 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1415 FT0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1417 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1424 void OPPROTO
op_flds_ST0_A0(void)
1427 new_fpstt
= (env
->fpstt
- 1) & 7;
1428 #ifdef USE_FP_CONVERT
1429 FP_CONVERT
.i32
= ldl((void *)A0
);
1430 env
->fpregs
[new_fpstt
] = FP_CONVERT
.f
;
1432 env
->fpregs
[new_fpstt
] = ldfl((void *)A0
);
1434 env
->fpstt
= new_fpstt
;
1435 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1438 void OPPROTO
op_fldl_ST0_A0(void)
1441 new_fpstt
= (env
->fpstt
- 1) & 7;
1442 #ifdef USE_FP_CONVERT
1443 FP_CONVERT
.i64
= ldq((void *)A0
);
1444 env
->fpregs
[new_fpstt
] = FP_CONVERT
.d
;
1446 env
->fpregs
[new_fpstt
] = ldfq((void *)A0
);
1448 env
->fpstt
= new_fpstt
;
1449 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1452 #ifdef USE_X86LDOUBLE
1453 void OPPROTO
op_fldt_ST0_A0(void)
1456 new_fpstt
= (env
->fpstt
- 1) & 7;
1457 env
->fpregs
[new_fpstt
] = *(long double *)A0
;
1458 env
->fpstt
= new_fpstt
;
1459 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1462 void OPPROTO
op_fldt_ST0_A0(void)
1464 helper_fldt_ST0_A0();
1468 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1469 #ifdef USE_INT_TO_FLOAT_HELPERS
1471 void helper_fild_ST0_A0(void)
1474 new_fpstt
= (env
->fpstt
- 1) & 7;
1475 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)ldsw((void *)A0
);
1476 env
->fpstt
= new_fpstt
;
1477 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1480 void helper_fildl_ST0_A0(void)
1483 new_fpstt
= (env
->fpstt
- 1) & 7;
1484 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1485 env
->fpstt
= new_fpstt
;
1486 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1489 void helper_fildll_ST0_A0(void)
1492 new_fpstt
= (env
->fpstt
- 1) & 7;
1493 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1494 env
->fpstt
= new_fpstt
;
1495 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1498 void OPPROTO
op_fild_ST0_A0(void)
1500 helper_fild_ST0_A0();
1503 void OPPROTO
op_fildl_ST0_A0(void)
1505 helper_fildl_ST0_A0();
1508 void OPPROTO
op_fildll_ST0_A0(void)
1510 helper_fildll_ST0_A0();
1515 void OPPROTO
op_fild_ST0_A0(void)
1518 new_fpstt
= (env
->fpstt
- 1) & 7;
1519 #ifdef USE_FP_CONVERT
1520 FP_CONVERT
.i32
= ldsw((void *)A0
);
1521 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i32
;
1523 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)ldsw((void *)A0
);
1525 env
->fpstt
= new_fpstt
;
1526 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1529 void OPPROTO
op_fildl_ST0_A0(void)
1532 new_fpstt
= (env
->fpstt
- 1) & 7;
1533 #ifdef USE_FP_CONVERT
1534 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1535 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i32
;
1537 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1539 env
->fpstt
= new_fpstt
;
1540 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1543 void OPPROTO
op_fildll_ST0_A0(void)
1546 new_fpstt
= (env
->fpstt
- 1) & 7;
1547 #ifdef USE_FP_CONVERT
1548 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1549 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i64
;
1551 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1553 env
->fpstt
= new_fpstt
;
1554 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1561 void OPPROTO
op_fsts_ST0_A0(void)
1563 #ifdef USE_FP_CONVERT
1564 FP_CONVERT
.f
= (float)ST0
;
1565 stfl((void *)A0
, FP_CONVERT
.f
);
1567 stfl((void *)A0
, (float)ST0
);
1571 void OPPROTO
op_fstl_ST0_A0(void)
1573 stfq((void *)A0
, (double)ST0
);
1576 #ifdef USE_X86LDOUBLE
1577 void OPPROTO
op_fstt_ST0_A0(void)
1579 *(long double *)A0
= ST0
;
1582 void OPPROTO
op_fstt_ST0_A0(void)
1584 helper_fstt_ST0_A0();
1588 void OPPROTO
op_fist_ST0_A0(void)
1590 #if defined(__sparc__) && !defined(__sparc_v9__)
1591 register CPU86_LDouble d
asm("o0");
1599 if (val
!= (int16_t)val
)
1601 stw((void *)A0
, val
);
1604 void OPPROTO
op_fistl_ST0_A0(void)
1606 #if defined(__sparc__) && !defined(__sparc_v9__)
1607 register CPU86_LDouble d
asm("o0");
1615 stl((void *)A0
, val
);
1618 void OPPROTO
op_fistll_ST0_A0(void)
1620 #if defined(__sparc__) && !defined(__sparc_v9__)
1621 register CPU86_LDouble d
asm("o0");
1629 stq((void *)A0
, val
);
1632 void OPPROTO
op_fbld_ST0_A0(void)
1634 helper_fbld_ST0_A0();
1637 void OPPROTO
op_fbst_ST0_A0(void)
1639 helper_fbst_ST0_A0();
1644 void OPPROTO
op_fpush(void)
1649 void OPPROTO
op_fpop(void)
1654 void OPPROTO
op_fdecstp(void)
1656 env
->fpstt
= (env
->fpstt
- 1) & 7;
1657 env
->fpus
&= (~0x4700);
1660 void OPPROTO
op_fincstp(void)
1662 env
->fpstt
= (env
->fpstt
+ 1) & 7;
1663 env
->fpus
&= (~0x4700);
1666 void OPPROTO
op_fmov_ST0_FT0(void)
1671 void OPPROTO
op_fmov_FT0_STN(void)
1676 void OPPROTO
op_fmov_ST0_STN(void)
1681 void OPPROTO
op_fmov_STN_ST0(void)
1686 void OPPROTO
op_fxchg_ST0_STN(void)
1694 /* FPU operations */
1696 /* XXX: handle nans */
1697 void OPPROTO
op_fcom_ST0_FT0(void)
1699 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1701 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1702 else if (ST0
== FT0
)
1703 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1707 /* XXX: handle nans */
1708 void OPPROTO
op_fucom_ST0_FT0(void)
1710 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1712 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1713 else if (ST0
== FT0
)
1714 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1718 /* XXX: handle nans */
1719 void OPPROTO
op_fcomi_ST0_FT0(void)
1722 eflags
= cc_table
[CC_OP
].compute_all();
1723 eflags
&= ~(CC_Z
| CC_P
| CC_C
);
1726 else if (ST0
== FT0
)
1732 /* XXX: handle nans */
1733 void OPPROTO
op_fucomi_ST0_FT0(void)
1736 eflags
= cc_table
[CC_OP
].compute_all();
1737 eflags
&= ~(CC_Z
| CC_P
| CC_C
);
1740 else if (ST0
== FT0
)
1746 void OPPROTO
op_fadd_ST0_FT0(void)
1751 void OPPROTO
op_fmul_ST0_FT0(void)
1756 void OPPROTO
op_fsub_ST0_FT0(void)
1761 void OPPROTO
op_fsubr_ST0_FT0(void)
1766 void OPPROTO
op_fdiv_ST0_FT0(void)
1771 void OPPROTO
op_fdivr_ST0_FT0(void)
1776 /* fp operations between STN and ST0 */
1778 void OPPROTO
op_fadd_STN_ST0(void)
1783 void OPPROTO
op_fmul_STN_ST0(void)
1788 void OPPROTO
op_fsub_STN_ST0(void)
1793 void OPPROTO
op_fsubr_STN_ST0(void)
1800 void OPPROTO
op_fdiv_STN_ST0(void)
1805 void OPPROTO
op_fdivr_STN_ST0(void)
1812 /* misc FPU operations */
1813 void OPPROTO
op_fchs_ST0(void)
1818 void OPPROTO
op_fabs_ST0(void)
1823 void OPPROTO
op_fxam_ST0(void)
1828 void OPPROTO
op_fld1_ST0(void)
1833 void OPPROTO
op_fldl2t_ST0(void)
1838 void OPPROTO
op_fldl2e_ST0(void)
1843 void OPPROTO
op_fldpi_ST0(void)
1848 void OPPROTO
op_fldlg2_ST0(void)
1853 void OPPROTO
op_fldln2_ST0(void)
1858 void OPPROTO
op_fldz_ST0(void)
1863 void OPPROTO
op_fldz_FT0(void)
1868 /* associated heplers to reduce generated code length and to simplify
1869 relocation (FP constants are usually stored in .rodata section) */
1871 void OPPROTO
op_f2xm1(void)
1876 void OPPROTO
op_fyl2x(void)
1881 void OPPROTO
op_fptan(void)
1886 void OPPROTO
op_fpatan(void)
1891 void OPPROTO
op_fxtract(void)
1896 void OPPROTO
op_fprem1(void)
1902 void OPPROTO
op_fprem(void)
1907 void OPPROTO
op_fyl2xp1(void)
1912 void OPPROTO
op_fsqrt(void)
1917 void OPPROTO
op_fsincos(void)
1922 void OPPROTO
op_frndint(void)
1927 void OPPROTO
op_fscale(void)
1932 void OPPROTO
op_fsin(void)
1937 void OPPROTO
op_fcos(void)
1942 void OPPROTO
op_fnstsw_A0(void)
1945 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
1946 stw((void *)A0
, fpus
);
1949 void OPPROTO
op_fnstsw_EAX(void)
1952 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
1953 EAX
= (EAX
& 0xffff0000) | fpus
;
1956 void OPPROTO
op_fnstcw_A0(void)
1958 stw((void *)A0
, env
->fpuc
);
1961 void OPPROTO
op_fldcw_A0(void)
1964 env
->fpuc
= lduw((void *)A0
);
1965 /* set rounding mode */
1966 switch(env
->fpuc
& RC_MASK
) {
1969 rnd_type
= FE_TONEAREST
;
1972 rnd_type
= FE_DOWNWARD
;
1975 rnd_type
= FE_UPWARD
;
1978 rnd_type
= FE_TOWARDZERO
;
1981 fesetround(rnd_type
);
1984 void OPPROTO
op_fclex(void)
1986 env
->fpus
&= 0x7f00;
1989 void OPPROTO
op_fninit(void)
2004 void OPPROTO
op_fnstenv_A0(void)
2006 helper_fstenv((uint8_t *)A0
, PARAM1
);
2009 void OPPROTO
op_fldenv_A0(void)
2011 helper_fldenv((uint8_t *)A0
, PARAM1
);
2014 void OPPROTO
op_fnsave_A0(void)
2016 helper_fsave((uint8_t *)A0
, PARAM1
);
2019 void OPPROTO
op_frstor_A0(void)
2021 helper_frstor((uint8_t *)A0
, PARAM1
);
2024 /* threading support */
2025 void OPPROTO
op_lock(void)
2030 void OPPROTO
op_unlock(void)