]>
git.proxmox.com Git - qemu.git/blob - target-i386/op.c
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
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)
379 #define MEMSUFFIX _raw
382 #if !defined(CONFIG_USER_ONLY)
383 #define MEMSUFFIX _user
386 #define MEMSUFFIX _kernel
390 /* used for bit operations */
392 void OPPROTO
op_add_bitw_A0_T1(void)
394 A0
+= ((int32_t)T1
>> 4) << 1;
397 void OPPROTO
op_add_bitl_A0_T1(void)
399 A0
+= ((int32_t)T1
>> 5) << 2;
404 void OPPROTO
op_jmp_T0(void)
409 void OPPROTO
op_jmp_im(void)
414 void OPPROTO
op_hlt(void)
416 env
->exception_index
= EXCP_HLT
;
420 void OPPROTO
op_debug(void)
422 env
->exception_index
= EXCP_DEBUG
;
426 void OPPROTO
op_raise_interrupt(void)
429 unsigned int next_eip
;
432 raise_interrupt(intno
, 1, 0, next_eip
);
435 void OPPROTO
op_raise_exception(void)
438 exception_index
= PARAM1
;
439 raise_exception(exception_index
);
442 void OPPROTO
op_into(void)
445 eflags
= cc_table
[CC_OP
].compute_all();
447 raise_interrupt(EXCP04_INTO
, 1, 0, PARAM1
);
452 void OPPROTO
op_cli(void)
454 env
->eflags
&= ~IF_MASK
;
457 void OPPROTO
op_sti(void)
459 env
->eflags
|= IF_MASK
;
462 void OPPROTO
op_set_inhibit_irq(void)
464 env
->hflags
|= HF_INHIBIT_IRQ_MASK
;
467 void OPPROTO
op_reset_inhibit_irq(void)
469 env
->hflags
&= ~HF_INHIBIT_IRQ_MASK
;
473 /* vm86plus instructions */
474 void OPPROTO
op_cli_vm(void)
476 env
->eflags
&= ~VIF_MASK
;
479 void OPPROTO
op_sti_vm(void)
481 env
->eflags
|= VIF_MASK
;
482 if (env
->eflags
& VIP_MASK
) {
484 raise_exception(EXCP0D_GPF
);
490 void OPPROTO
op_boundw(void)
493 low
= ldsw((uint8_t *)A0
);
494 high
= ldsw((uint8_t *)A0
+ 2);
496 if (v
< low
|| v
> high
) {
498 raise_exception(EXCP05_BOUND
);
503 void OPPROTO
op_boundl(void)
506 low
= ldl((uint8_t *)A0
);
507 high
= ldl((uint8_t *)A0
+ 4);
509 if (v
< low
|| v
> high
) {
511 raise_exception(EXCP05_BOUND
);
516 void OPPROTO
op_cmpxchg8b(void)
521 void OPPROTO
op_jmp(void)
523 JUMP_TB(op_jmp
, PARAM1
, 0, PARAM2
);
526 void OPPROTO
op_movl_T0_0(void)
531 void OPPROTO
op_exit_tb(void)
536 /* multiple size ops */
541 #include "ops_template.h"
545 #include "ops_template.h"
549 #include "ops_template.h"
554 void OPPROTO
op_movsbl_T0_T0(void)
559 void OPPROTO
op_movzbl_T0_T0(void)
564 void OPPROTO
op_movswl_T0_T0(void)
569 void OPPROTO
op_movzwl_T0_T0(void)
574 void OPPROTO
op_movswl_EAX_AX(void)
579 void OPPROTO
op_movsbw_AX_AL(void)
581 EAX
= (EAX
& 0xffff0000) | ((int8_t)EAX
& 0xffff);
584 void OPPROTO
op_movslq_EDX_EAX(void)
586 EDX
= (int32_t)EAX
>> 31;
589 void OPPROTO
op_movswl_DX_AX(void)
591 EDX
= (EDX
& 0xffff0000) | (((int16_t)EAX
>> 15) & 0xffff);
594 /* string ops helpers */
596 void OPPROTO
op_addl_ESI_T0(void)
601 void OPPROTO
op_addw_ESI_T0(void)
603 ESI
= (ESI
& ~0xffff) | ((ESI
+ T0
) & 0xffff);
606 void OPPROTO
op_addl_EDI_T0(void)
611 void OPPROTO
op_addw_EDI_T0(void)
613 EDI
= (EDI
& ~0xffff) | ((EDI
+ T0
) & 0xffff);
616 void OPPROTO
op_decl_ECX(void)
621 void OPPROTO
op_decw_ECX(void)
623 ECX
= (ECX
& ~0xffff) | ((ECX
- 1) & 0xffff);
628 void op_pushl_T0(void)
632 stl((void *)offset
, T0
);
633 /* modify ESP after to handle exceptions correctly */
637 void op_pushw_T0(void)
641 stw((void *)offset
, T0
);
642 /* modify ESP after to handle exceptions correctly */
646 void op_pushl_ss32_T0(void)
650 stl(env
->segs
[R_SS
].base
+ offset
, T0
);
651 /* modify ESP after to handle exceptions correctly */
655 void op_pushw_ss32_T0(void)
659 stw(env
->segs
[R_SS
].base
+ offset
, T0
);
660 /* modify ESP after to handle exceptions correctly */
664 void op_pushl_ss16_T0(void)
667 offset
= (ESP
- 4) & 0xffff;
668 stl(env
->segs
[R_SS
].base
+ offset
, T0
);
669 /* modify ESP after to handle exceptions correctly */
670 ESP
= (ESP
& ~0xffff) | offset
;
673 void op_pushw_ss16_T0(void)
676 offset
= (ESP
- 2) & 0xffff;
677 stw(env
->segs
[R_SS
].base
+ offset
, T0
);
678 /* modify ESP after to handle exceptions correctly */
679 ESP
= (ESP
& ~0xffff) | offset
;
682 /* NOTE: ESP update is done after */
683 void op_popl_T0(void)
685 T0
= ldl((void *)ESP
);
688 void op_popw_T0(void)
690 T0
= lduw((void *)ESP
);
693 void op_popl_ss32_T0(void)
695 T0
= ldl(env
->segs
[R_SS
].base
+ ESP
);
698 void op_popw_ss32_T0(void)
700 T0
= lduw(env
->segs
[R_SS
].base
+ ESP
);
703 void op_popl_ss16_T0(void)
705 T0
= ldl(env
->segs
[R_SS
].base
+ (ESP
& 0xffff));
708 void op_popw_ss16_T0(void)
710 T0
= lduw(env
->segs
[R_SS
].base
+ (ESP
& 0xffff));
713 void op_addl_ESP_4(void)
718 void op_addl_ESP_2(void)
723 void op_addw_ESP_4(void)
725 ESP
= (ESP
& ~0xffff) | ((ESP
+ 4) & 0xffff);
728 void op_addw_ESP_2(void)
730 ESP
= (ESP
& ~0xffff) | ((ESP
+ 2) & 0xffff);
733 void op_addl_ESP_im(void)
738 void op_addw_ESP_im(void)
740 ESP
= (ESP
& ~0xffff) | ((ESP
+ PARAM1
) & 0xffff);
743 void OPPROTO
op_rdtsc(void)
748 void OPPROTO
op_cpuid(void)
753 void OPPROTO
op_rdmsr(void)
758 void OPPROTO
op_wrmsr(void)
766 void OPPROTO
op_aam(void)
773 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
777 void OPPROTO
op_aad(void)
782 ah
= (EAX
>> 8) & 0xff;
783 al
= ((ah
* base
) + al
) & 0xff;
784 EAX
= (EAX
& ~0xffff) | al
;
788 void OPPROTO
op_aaa(void)
794 eflags
= cc_table
[CC_OP
].compute_all();
797 ah
= (EAX
>> 8) & 0xff;
799 icarry
= (al
> 0xf9);
800 if (((al
& 0x0f) > 9 ) || af
) {
801 al
= (al
+ 6) & 0x0f;
802 ah
= (ah
+ 1 + icarry
) & 0xff;
803 eflags
|= CC_C
| CC_A
;
805 eflags
&= ~(CC_C
| CC_A
);
808 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
812 void OPPROTO
op_aas(void)
818 eflags
= cc_table
[CC_OP
].compute_all();
821 ah
= (EAX
>> 8) & 0xff;
824 if (((al
& 0x0f) > 9 ) || af
) {
825 al
= (al
- 6) & 0x0f;
826 ah
= (ah
- 1 - icarry
) & 0xff;
827 eflags
|= CC_C
| CC_A
;
829 eflags
&= ~(CC_C
| CC_A
);
832 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
836 void OPPROTO
op_daa(void)
841 eflags
= cc_table
[CC_OP
].compute_all();
847 if (((al
& 0x0f) > 9 ) || af
) {
848 al
= (al
+ 6) & 0xff;
851 if ((al
> 0x9f) || cf
) {
852 al
= (al
+ 0x60) & 0xff;
855 EAX
= (EAX
& ~0xff) | al
;
856 /* well, speed is not an issue here, so we compute the flags by hand */
857 eflags
|= (al
== 0) << 6; /* zf */
858 eflags
|= parity_table
[al
]; /* pf */
859 eflags
|= (al
& 0x80); /* sf */
863 void OPPROTO
op_das(void)
868 eflags
= cc_table
[CC_OP
].compute_all();
875 if (((al
& 0x0f) > 9 ) || af
) {
879 al
= (al
- 6) & 0xff;
881 if ((al1
> 0x99) || cf
) {
882 al
= (al
- 0x60) & 0xff;
885 EAX
= (EAX
& ~0xff) | al
;
886 /* well, speed is not an issue here, so we compute the flags by hand */
887 eflags
|= (al
== 0) << 6; /* zf */
888 eflags
|= parity_table
[al
]; /* pf */
889 eflags
|= (al
& 0x80); /* sf */
893 /* segment handling */
895 /* never use it with R_CS */
896 void OPPROTO
op_movl_seg_T0(void)
898 load_seg(PARAM1
, T0
& 0xffff, PARAM2
);
901 /* faster VM86 version */
902 void OPPROTO
op_movl_seg_T0_vm(void)
907 selector
= T0
& 0xffff;
908 /* env->segs[] access */
909 sc
= (SegmentCache
*)((char *)env
+ PARAM1
);
910 sc
->selector
= selector
;
911 sc
->base
= (void *)(selector
<< 4);
914 void OPPROTO
op_movl_T0_seg(void)
916 T0
= env
->segs
[PARAM1
].selector
;
919 void OPPROTO
op_movl_A0_seg(void)
921 A0
= *(unsigned long *)((char *)env
+ PARAM1
);
924 void OPPROTO
op_addl_A0_seg(void)
926 A0
+= *(unsigned long *)((char *)env
+ PARAM1
);
929 void OPPROTO
op_lsl(void)
934 void OPPROTO
op_lar(void)
939 void OPPROTO
op_verr(void)
944 void OPPROTO
op_verw(void)
949 void OPPROTO
op_arpl(void)
951 if ((T0
& 3) < (T1
& 3)) {
952 /* XXX: emulate bug or 0xff3f0000 oring as in bochs ? */
953 T0
= (T0
& ~3) | (T1
& 3);
961 void OPPROTO
op_arpl_update(void)
964 eflags
= cc_table
[CC_OP
].compute_all();
965 CC_SRC
= (eflags
& ~CC_Z
) | T1
;
968 /* T0: segment, T1:eip */
969 void OPPROTO
op_ljmp_protected_T0_T1(void)
971 helper_ljmp_protected_T0_T1();
974 void OPPROTO
op_lcall_real_T0_T1(void)
976 helper_lcall_real_T0_T1(PARAM1
, PARAM2
);
979 void OPPROTO
op_lcall_protected_T0_T1(void)
981 helper_lcall_protected_T0_T1(PARAM1
, PARAM2
);
984 void OPPROTO
op_iret_real(void)
986 helper_iret_real(PARAM1
);
989 void OPPROTO
op_iret_protected(void)
991 helper_iret_protected(PARAM1
);
994 void OPPROTO
op_lret_protected(void)
996 helper_lret_protected(PARAM1
, PARAM2
);
999 void OPPROTO
op_lldt_T0(void)
1004 void OPPROTO
op_ltr_T0(void)
1009 /* CR registers access */
1010 void OPPROTO
op_movl_crN_T0(void)
1012 helper_movl_crN_T0(PARAM1
);
1015 /* DR registers access */
1016 void OPPROTO
op_movl_drN_T0(void)
1018 helper_movl_drN_T0(PARAM1
);
1021 void OPPROTO
op_lmsw_T0(void)
1023 /* only 4 lower bits of CR0 are modified */
1024 T0
= (env
->cr
[0] & ~0xf) | (T0
& 0xf);
1025 helper_movl_crN_T0(0);
1028 void OPPROTO
op_invlpg_A0(void)
1033 void OPPROTO
op_movl_T0_env(void)
1035 T0
= *(uint32_t *)((char *)env
+ PARAM1
);
1038 void OPPROTO
op_movl_env_T0(void)
1040 *(uint32_t *)((char *)env
+ PARAM1
) = T0
;
1043 void OPPROTO
op_movl_env_T1(void)
1045 *(uint32_t *)((char *)env
+ PARAM1
) = T1
;
1048 void OPPROTO
op_clts(void)
1050 env
->cr
[0] &= ~CR0_TS_MASK
;
1053 /* flags handling */
1055 /* slow jumps cases : in order to avoid calling a function with a
1056 pointer (which can generate a stack frame on PowerPC), we use
1057 op_setcc to set T0 and then call op_jcc. */
1058 void OPPROTO
op_jcc(void)
1061 JUMP_TB(op_jcc
, PARAM1
, 0, PARAM2
);
1063 JUMP_TB(op_jcc
, PARAM1
, 1, PARAM3
);
1067 void OPPROTO
op_jcc_im(void)
1076 /* slow set cases (compute x86 flags) */
1077 void OPPROTO
op_seto_T0_cc(void)
1080 eflags
= cc_table
[CC_OP
].compute_all();
1081 T0
= (eflags
>> 11) & 1;
1084 void OPPROTO
op_setb_T0_cc(void)
1086 T0
= cc_table
[CC_OP
].compute_c();
1089 void OPPROTO
op_setz_T0_cc(void)
1092 eflags
= cc_table
[CC_OP
].compute_all();
1093 T0
= (eflags
>> 6) & 1;
1096 void OPPROTO
op_setbe_T0_cc(void)
1099 eflags
= cc_table
[CC_OP
].compute_all();
1100 T0
= (eflags
& (CC_Z
| CC_C
)) != 0;
1103 void OPPROTO
op_sets_T0_cc(void)
1106 eflags
= cc_table
[CC_OP
].compute_all();
1107 T0
= (eflags
>> 7) & 1;
1110 void OPPROTO
op_setp_T0_cc(void)
1113 eflags
= cc_table
[CC_OP
].compute_all();
1114 T0
= (eflags
>> 2) & 1;
1117 void OPPROTO
op_setl_T0_cc(void)
1120 eflags
= cc_table
[CC_OP
].compute_all();
1121 T0
= ((eflags
^ (eflags
>> 4)) >> 7) & 1;
1124 void OPPROTO
op_setle_T0_cc(void)
1127 eflags
= cc_table
[CC_OP
].compute_all();
1128 T0
= (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
)) != 0;
1131 void OPPROTO
op_xor_T0_1(void)
1136 void OPPROTO
op_set_cc_op(void)
1141 #define FL_UPDATE_MASK16 (FL_UPDATE_MASK32 & 0xffff)
1143 void OPPROTO
op_movl_eflags_T0(void)
1147 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1148 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1149 /* we also update some system flags as in user mode */
1150 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK32
) |
1151 (eflags
& FL_UPDATE_MASK32
);
1154 void OPPROTO
op_movw_eflags_T0(void)
1158 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1159 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1160 /* we also update some system flags as in user mode */
1161 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK16
) |
1162 (eflags
& FL_UPDATE_MASK16
);
1165 void OPPROTO
op_movl_eflags_T0_cpl0(void)
1167 load_eflags(T0
, FL_UPDATE_CPL0_MASK
);
1170 void OPPROTO
op_movw_eflags_T0_cpl0(void)
1172 load_eflags(T0
, FL_UPDATE_CPL0_MASK
& 0xffff);
1176 /* vm86plus version */
1177 void OPPROTO
op_movw_eflags_T0_vm(void)
1181 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1182 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1183 /* we also update some system flags as in user mode */
1184 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK16
| VIF_MASK
)) |
1185 (eflags
& FL_UPDATE_MASK16
);
1186 if (eflags
& IF_MASK
) {
1187 env
->eflags
|= VIF_MASK
;
1188 if (env
->eflags
& VIP_MASK
) {
1190 raise_exception(EXCP0D_GPF
);
1196 void OPPROTO
op_movl_eflags_T0_vm(void)
1200 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1201 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1202 /* we also update some system flags as in user mode */
1203 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK32
| VIF_MASK
)) |
1204 (eflags
& FL_UPDATE_MASK32
);
1205 if (eflags
& IF_MASK
) {
1206 env
->eflags
|= VIF_MASK
;
1207 if (env
->eflags
& VIP_MASK
) {
1209 raise_exception(EXCP0D_GPF
);
1216 /* XXX: compute only O flag */
1217 void OPPROTO
op_movb_eflags_T0(void)
1220 of
= cc_table
[CC_OP
].compute_all() & CC_O
;
1221 CC_SRC
= (T0
& (CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
)) | of
;
1224 void OPPROTO
op_movl_T0_eflags(void)
1227 eflags
= cc_table
[CC_OP
].compute_all();
1228 eflags
|= (DF
& DF_MASK
);
1229 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
);
1233 /* vm86plus version */
1235 void OPPROTO
op_movl_T0_eflags_vm(void)
1238 eflags
= cc_table
[CC_OP
].compute_all();
1239 eflags
|= (DF
& DF_MASK
);
1240 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
| IF_MASK
);
1241 if (env
->eflags
& VIF_MASK
)
1247 void OPPROTO
op_cld(void)
1252 void OPPROTO
op_std(void)
1257 void OPPROTO
op_clc(void)
1260 eflags
= cc_table
[CC_OP
].compute_all();
1265 void OPPROTO
op_stc(void)
1268 eflags
= cc_table
[CC_OP
].compute_all();
1273 void OPPROTO
op_cmc(void)
1276 eflags
= cc_table
[CC_OP
].compute_all();
1281 void OPPROTO
op_salc(void)
1284 cf
= cc_table
[CC_OP
].compute_c();
1285 EAX
= (EAX
& ~0xff) | ((-cf
) & 0xff);
1288 static int compute_all_eflags(void)
1293 static int compute_c_eflags(void)
1295 return CC_SRC
& CC_C
;
1298 static int compute_c_mul(void)
1305 static int compute_all_mul(void)
1307 int cf
, pf
, af
, zf
, sf
, of
;
1309 pf
= 0; /* undefined */
1310 af
= 0; /* undefined */
1311 zf
= 0; /* undefined */
1312 sf
= 0; /* undefined */
1314 return cf
| pf
| af
| zf
| sf
| of
;
1317 CCTable cc_table
[CC_OP_NB
] = {
1318 [CC_OP_DYNAMIC
] = { /* should never happen */ },
1320 [CC_OP_EFLAGS
] = { compute_all_eflags
, compute_c_eflags
},
1322 [CC_OP_MUL
] = { compute_all_mul
, compute_c_mul
},
1324 [CC_OP_ADDB
] = { compute_all_addb
, compute_c_addb
},
1325 [CC_OP_ADDW
] = { compute_all_addw
, compute_c_addw
},
1326 [CC_OP_ADDL
] = { compute_all_addl
, compute_c_addl
},
1328 [CC_OP_ADCB
] = { compute_all_adcb
, compute_c_adcb
},
1329 [CC_OP_ADCW
] = { compute_all_adcw
, compute_c_adcw
},
1330 [CC_OP_ADCL
] = { compute_all_adcl
, compute_c_adcl
},
1332 [CC_OP_SUBB
] = { compute_all_subb
, compute_c_subb
},
1333 [CC_OP_SUBW
] = { compute_all_subw
, compute_c_subw
},
1334 [CC_OP_SUBL
] = { compute_all_subl
, compute_c_subl
},
1336 [CC_OP_SBBB
] = { compute_all_sbbb
, compute_c_sbbb
},
1337 [CC_OP_SBBW
] = { compute_all_sbbw
, compute_c_sbbw
},
1338 [CC_OP_SBBL
] = { compute_all_sbbl
, compute_c_sbbl
},
1340 [CC_OP_LOGICB
] = { compute_all_logicb
, compute_c_logicb
},
1341 [CC_OP_LOGICW
] = { compute_all_logicw
, compute_c_logicw
},
1342 [CC_OP_LOGICL
] = { compute_all_logicl
, compute_c_logicl
},
1344 [CC_OP_INCB
] = { compute_all_incb
, compute_c_incl
},
1345 [CC_OP_INCW
] = { compute_all_incw
, compute_c_incl
},
1346 [CC_OP_INCL
] = { compute_all_incl
, compute_c_incl
},
1348 [CC_OP_DECB
] = { compute_all_decb
, compute_c_incl
},
1349 [CC_OP_DECW
] = { compute_all_decw
, compute_c_incl
},
1350 [CC_OP_DECL
] = { compute_all_decl
, compute_c_incl
},
1352 [CC_OP_SHLB
] = { compute_all_shlb
, compute_c_shlb
},
1353 [CC_OP_SHLW
] = { compute_all_shlw
, compute_c_shlw
},
1354 [CC_OP_SHLL
] = { compute_all_shll
, compute_c_shll
},
1356 [CC_OP_SARB
] = { compute_all_sarb
, compute_c_sarl
},
1357 [CC_OP_SARW
] = { compute_all_sarw
, compute_c_sarl
},
1358 [CC_OP_SARL
] = { compute_all_sarl
, compute_c_sarl
},
1361 /* floating point support. Some of the code for complicated x87
1362 functions comes from the LGPL'ed x86 emulator found in the Willows
1363 TWIN windows emulator. */
1365 #if defined(__powerpc__)
1366 extern CPU86_LDouble
copysign(CPU86_LDouble
, CPU86_LDouble
);
1368 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1369 double qemu_rint(double x
)
1371 double y
= 4503599627370496.0;
1382 #define rint qemu_rint
1387 void OPPROTO
op_flds_FT0_A0(void)
1389 #ifdef USE_FP_CONVERT
1390 FP_CONVERT
.i32
= ldl((void *)A0
);
1393 FT0
= ldfl((void *)A0
);
1397 void OPPROTO
op_fldl_FT0_A0(void)
1399 #ifdef USE_FP_CONVERT
1400 FP_CONVERT
.i64
= ldq((void *)A0
);
1403 FT0
= ldfq((void *)A0
);
1407 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1408 #ifdef USE_INT_TO_FLOAT_HELPERS
1410 void helper_fild_FT0_A0(void)
1412 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1415 void helper_fildl_FT0_A0(void)
1417 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1420 void helper_fildll_FT0_A0(void)
1422 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1425 void OPPROTO
op_fild_FT0_A0(void)
1427 helper_fild_FT0_A0();
1430 void OPPROTO
op_fildl_FT0_A0(void)
1432 helper_fildl_FT0_A0();
1435 void OPPROTO
op_fildll_FT0_A0(void)
1437 helper_fildll_FT0_A0();
1442 void OPPROTO
op_fild_FT0_A0(void)
1444 #ifdef USE_FP_CONVERT
1445 FP_CONVERT
.i32
= ldsw((void *)A0
);
1446 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1448 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1452 void OPPROTO
op_fildl_FT0_A0(void)
1454 #ifdef USE_FP_CONVERT
1455 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1456 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1458 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1462 void OPPROTO
op_fildll_FT0_A0(void)
1464 #ifdef USE_FP_CONVERT
1465 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1466 FT0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1468 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1475 void OPPROTO
op_flds_ST0_A0(void)
1478 new_fpstt
= (env
->fpstt
- 1) & 7;
1479 #ifdef USE_FP_CONVERT
1480 FP_CONVERT
.i32
= ldl((void *)A0
);
1481 env
->fpregs
[new_fpstt
] = FP_CONVERT
.f
;
1483 env
->fpregs
[new_fpstt
] = ldfl((void *)A0
);
1485 env
->fpstt
= new_fpstt
;
1486 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1489 void OPPROTO
op_fldl_ST0_A0(void)
1492 new_fpstt
= (env
->fpstt
- 1) & 7;
1493 #ifdef USE_FP_CONVERT
1494 FP_CONVERT
.i64
= ldq((void *)A0
);
1495 env
->fpregs
[new_fpstt
] = FP_CONVERT
.d
;
1497 env
->fpregs
[new_fpstt
] = ldfq((void *)A0
);
1499 env
->fpstt
= new_fpstt
;
1500 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1503 void OPPROTO
op_fldt_ST0_A0(void)
1505 helper_fldt_ST0_A0();
1508 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1509 #ifdef USE_INT_TO_FLOAT_HELPERS
1511 void helper_fild_ST0_A0(void)
1514 new_fpstt
= (env
->fpstt
- 1) & 7;
1515 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)ldsw((void *)A0
);
1516 env
->fpstt
= new_fpstt
;
1517 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1520 void helper_fildl_ST0_A0(void)
1523 new_fpstt
= (env
->fpstt
- 1) & 7;
1524 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1525 env
->fpstt
= new_fpstt
;
1526 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1529 void helper_fildll_ST0_A0(void)
1532 new_fpstt
= (env
->fpstt
- 1) & 7;
1533 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1534 env
->fpstt
= new_fpstt
;
1535 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1538 void OPPROTO
op_fild_ST0_A0(void)
1540 helper_fild_ST0_A0();
1543 void OPPROTO
op_fildl_ST0_A0(void)
1545 helper_fildl_ST0_A0();
1548 void OPPROTO
op_fildll_ST0_A0(void)
1550 helper_fildll_ST0_A0();
1555 void OPPROTO
op_fild_ST0_A0(void)
1558 new_fpstt
= (env
->fpstt
- 1) & 7;
1559 #ifdef USE_FP_CONVERT
1560 FP_CONVERT
.i32
= ldsw((void *)A0
);
1561 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i32
;
1563 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)ldsw((void *)A0
);
1565 env
->fpstt
= new_fpstt
;
1566 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1569 void OPPROTO
op_fildl_ST0_A0(void)
1572 new_fpstt
= (env
->fpstt
- 1) & 7;
1573 #ifdef USE_FP_CONVERT
1574 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1575 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i32
;
1577 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1579 env
->fpstt
= new_fpstt
;
1580 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1583 void OPPROTO
op_fildll_ST0_A0(void)
1586 new_fpstt
= (env
->fpstt
- 1) & 7;
1587 #ifdef USE_FP_CONVERT
1588 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1589 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i64
;
1591 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1593 env
->fpstt
= new_fpstt
;
1594 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1601 void OPPROTO
op_fsts_ST0_A0(void)
1603 #ifdef USE_FP_CONVERT
1604 FP_CONVERT
.f
= (float)ST0
;
1605 stfl((void *)A0
, FP_CONVERT
.f
);
1607 stfl((void *)A0
, (float)ST0
);
1611 void OPPROTO
op_fstl_ST0_A0(void)
1613 stfq((void *)A0
, (double)ST0
);
1616 void OPPROTO
op_fstt_ST0_A0(void)
1618 helper_fstt_ST0_A0();
1621 void OPPROTO
op_fist_ST0_A0(void)
1623 #if defined(__sparc__) && !defined(__sparc_v9__)
1624 register CPU86_LDouble d
asm("o0");
1632 if (val
!= (int16_t)val
)
1634 stw((void *)A0
, val
);
1637 void OPPROTO
op_fistl_ST0_A0(void)
1639 #if defined(__sparc__) && !defined(__sparc_v9__)
1640 register CPU86_LDouble d
asm("o0");
1648 stl((void *)A0
, val
);
1651 void OPPROTO
op_fistll_ST0_A0(void)
1653 #if defined(__sparc__) && !defined(__sparc_v9__)
1654 register CPU86_LDouble d
asm("o0");
1662 stq((void *)A0
, val
);
1665 void OPPROTO
op_fbld_ST0_A0(void)
1667 helper_fbld_ST0_A0();
1670 void OPPROTO
op_fbst_ST0_A0(void)
1672 helper_fbst_ST0_A0();
1677 void OPPROTO
op_fpush(void)
1682 void OPPROTO
op_fpop(void)
1687 void OPPROTO
op_fdecstp(void)
1689 env
->fpstt
= (env
->fpstt
- 1) & 7;
1690 env
->fpus
&= (~0x4700);
1693 void OPPROTO
op_fincstp(void)
1695 env
->fpstt
= (env
->fpstt
+ 1) & 7;
1696 env
->fpus
&= (~0x4700);
1699 void OPPROTO
op_fmov_ST0_FT0(void)
1704 void OPPROTO
op_fmov_FT0_STN(void)
1709 void OPPROTO
op_fmov_ST0_STN(void)
1714 void OPPROTO
op_fmov_STN_ST0(void)
1719 void OPPROTO
op_fxchg_ST0_STN(void)
1727 /* FPU operations */
1729 /* XXX: handle nans */
1730 void OPPROTO
op_fcom_ST0_FT0(void)
1732 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1734 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1735 else if (ST0
== FT0
)
1736 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1740 /* XXX: handle nans */
1741 void OPPROTO
op_fucom_ST0_FT0(void)
1743 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1745 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1746 else if (ST0
== FT0
)
1747 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1751 /* XXX: handle nans */
1752 void OPPROTO
op_fcomi_ST0_FT0(void)
1755 eflags
= cc_table
[CC_OP
].compute_all();
1756 eflags
&= ~(CC_Z
| CC_P
| CC_C
);
1759 else if (ST0
== FT0
)
1765 /* XXX: handle nans */
1766 void OPPROTO
op_fucomi_ST0_FT0(void)
1769 eflags
= cc_table
[CC_OP
].compute_all();
1770 eflags
&= ~(CC_Z
| CC_P
| CC_C
);
1773 else if (ST0
== FT0
)
1779 void OPPROTO
op_fadd_ST0_FT0(void)
1784 void OPPROTO
op_fmul_ST0_FT0(void)
1789 void OPPROTO
op_fsub_ST0_FT0(void)
1794 void OPPROTO
op_fsubr_ST0_FT0(void)
1799 void OPPROTO
op_fdiv_ST0_FT0(void)
1804 void OPPROTO
op_fdivr_ST0_FT0(void)
1809 /* fp operations between STN and ST0 */
1811 void OPPROTO
op_fadd_STN_ST0(void)
1816 void OPPROTO
op_fmul_STN_ST0(void)
1821 void OPPROTO
op_fsub_STN_ST0(void)
1826 void OPPROTO
op_fsubr_STN_ST0(void)
1833 void OPPROTO
op_fdiv_STN_ST0(void)
1838 void OPPROTO
op_fdivr_STN_ST0(void)
1845 /* misc FPU operations */
1846 void OPPROTO
op_fchs_ST0(void)
1851 void OPPROTO
op_fabs_ST0(void)
1856 void OPPROTO
op_fxam_ST0(void)
1861 void OPPROTO
op_fld1_ST0(void)
1866 void OPPROTO
op_fldl2t_ST0(void)
1871 void OPPROTO
op_fldl2e_ST0(void)
1876 void OPPROTO
op_fldpi_ST0(void)
1881 void OPPROTO
op_fldlg2_ST0(void)
1886 void OPPROTO
op_fldln2_ST0(void)
1891 void OPPROTO
op_fldz_ST0(void)
1896 void OPPROTO
op_fldz_FT0(void)
1901 /* associated heplers to reduce generated code length and to simplify
1902 relocation (FP constants are usually stored in .rodata section) */
1904 void OPPROTO
op_f2xm1(void)
1909 void OPPROTO
op_fyl2x(void)
1914 void OPPROTO
op_fptan(void)
1919 void OPPROTO
op_fpatan(void)
1924 void OPPROTO
op_fxtract(void)
1929 void OPPROTO
op_fprem1(void)
1935 void OPPROTO
op_fprem(void)
1940 void OPPROTO
op_fyl2xp1(void)
1945 void OPPROTO
op_fsqrt(void)
1950 void OPPROTO
op_fsincos(void)
1955 void OPPROTO
op_frndint(void)
1960 void OPPROTO
op_fscale(void)
1965 void OPPROTO
op_fsin(void)
1970 void OPPROTO
op_fcos(void)
1975 void OPPROTO
op_fnstsw_A0(void)
1978 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
1979 stw((void *)A0
, fpus
);
1982 void OPPROTO
op_fnstsw_EAX(void)
1985 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
1986 EAX
= (EAX
& 0xffff0000) | fpus
;
1989 void OPPROTO
op_fnstcw_A0(void)
1991 stw((void *)A0
, env
->fpuc
);
1994 void OPPROTO
op_fldcw_A0(void)
1997 env
->fpuc
= lduw((void *)A0
);
1998 /* set rounding mode */
1999 switch(env
->fpuc
& RC_MASK
) {
2002 rnd_type
= FE_TONEAREST
;
2005 rnd_type
= FE_DOWNWARD
;
2008 rnd_type
= FE_UPWARD
;
2011 rnd_type
= FE_TOWARDZERO
;
2014 fesetround(rnd_type
);
2017 void OPPROTO
op_fclex(void)
2019 env
->fpus
&= 0x7f00;
2022 void OPPROTO
op_fninit(void)
2037 void OPPROTO
op_fnstenv_A0(void)
2039 helper_fstenv((uint8_t *)A0
, PARAM1
);
2042 void OPPROTO
op_fldenv_A0(void)
2044 helper_fldenv((uint8_t *)A0
, PARAM1
);
2047 void OPPROTO
op_fnsave_A0(void)
2049 helper_fsave((uint8_t *)A0
, PARAM1
);
2052 void OPPROTO
op_frstor_A0(void)
2054 helper_frstor((uint8_t *)A0
, PARAM1
);
2057 /* threading support */
2058 void OPPROTO
op_lock(void)
2063 void OPPROTO
op_unlock(void)