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git.proxmox.com Git - mirror_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
21 /* XXX: must use this define because the soft mmu macros have huge
22 register constraints so they cannot be used in any C code. gcc 3.3
23 does not seem to be able to handle some constraints in rol
24 operations, so we disable it. */
25 #if !(__GNUC__ == 3 && __GNUC_MINOR__ == 3)
30 /* n must be a constant to be efficient */
31 static inline int lshift(int x
, int n
)
39 /* we define the various pieces of code used by the JIT */
43 #include "opreg_template.h"
49 #include "opreg_template.h"
55 #include "opreg_template.h"
61 #include "opreg_template.h"
67 #include "opreg_template.h"
73 #include "opreg_template.h"
79 #include "opreg_template.h"
85 #include "opreg_template.h"
89 /* operations with flags */
91 /* update flags with T0 and T1 (add/sub case) */
92 void OPPROTO
op_update2_cc(void)
98 /* update flags with T0 (logic operation case) */
99 void OPPROTO
op_update1_cc(void)
104 void OPPROTO
op_update_neg_cc(void)
110 void OPPROTO
op_cmpl_T0_T1_cc(void)
116 void OPPROTO
op_update_inc_cc(void)
118 CC_SRC
= cc_table
[CC_OP
].compute_c();
122 void OPPROTO
op_testl_T0_T1_cc(void)
127 /* operations without flags */
129 void OPPROTO
op_addl_T0_T1(void)
134 void OPPROTO
op_orl_T0_T1(void)
139 void OPPROTO
op_andl_T0_T1(void)
144 void OPPROTO
op_subl_T0_T1(void)
149 void OPPROTO
op_xorl_T0_T1(void)
154 void OPPROTO
op_negl_T0(void)
159 void OPPROTO
op_incl_T0(void)
164 void OPPROTO
op_decl_T0(void)
169 void OPPROTO
op_notl_T0(void)
174 void OPPROTO
op_bswapl_T0(void)
179 /* multiply/divide */
181 /* XXX: add eflags optimizations */
182 /* XXX: add non P4 style flags */
184 void OPPROTO
op_mulb_AL_T0(void)
187 res
= (uint8_t)EAX
* (uint8_t)T0
;
188 EAX
= (EAX
& 0xffff0000) | res
;
190 CC_SRC
= (res
& 0xff00);
193 void OPPROTO
op_imulb_AL_T0(void)
196 res
= (int8_t)EAX
* (int8_t)T0
;
197 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
199 CC_SRC
= (res
!= (int8_t)res
);
202 void OPPROTO
op_mulw_AX_T0(void)
205 res
= (uint16_t)EAX
* (uint16_t)T0
;
206 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
207 EDX
= (EDX
& 0xffff0000) | ((res
>> 16) & 0xffff);
212 void OPPROTO
op_imulw_AX_T0(void)
215 res
= (int16_t)EAX
* (int16_t)T0
;
216 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
217 EDX
= (EDX
& 0xffff0000) | ((res
>> 16) & 0xffff);
219 CC_SRC
= (res
!= (int16_t)res
);
222 void OPPROTO
op_mull_EAX_T0(void)
225 res
= (uint64_t)((uint32_t)EAX
) * (uint64_t)((uint32_t)T0
);
232 void OPPROTO
op_imull_EAX_T0(void)
235 res
= (int64_t)((int32_t)EAX
) * (int64_t)((int32_t)T0
);
239 CC_SRC
= (res
!= (int32_t)res
);
242 void OPPROTO
op_imulw_T0_T1(void)
245 res
= (int16_t)T0
* (int16_t)T1
;
248 CC_SRC
= (res
!= (int16_t)res
);
251 void OPPROTO
op_imull_T0_T1(void)
254 res
= (int64_t)((int32_t)T0
) * (int64_t)((int32_t)T1
);
257 CC_SRC
= (res
!= (int32_t)res
);
260 /* division, flags are undefined */
261 /* XXX: add exceptions for overflow */
263 void OPPROTO
op_divb_AL_T0(void)
265 unsigned int num
, den
, q
, r
;
267 num
= (EAX
& 0xffff);
271 raise_exception(EXCP00_DIVZ
);
273 q
= (num
/ den
) & 0xff;
274 r
= (num
% den
) & 0xff;
275 EAX
= (EAX
& 0xffff0000) | (r
<< 8) | q
;
278 void OPPROTO
op_idivb_AL_T0(void)
286 raise_exception(EXCP00_DIVZ
);
288 q
= (num
/ den
) & 0xff;
289 r
= (num
% den
) & 0xff;
290 EAX
= (EAX
& 0xffff0000) | (r
<< 8) | q
;
293 void OPPROTO
op_divw_AX_T0(void)
295 unsigned int num
, den
, q
, r
;
297 num
= (EAX
& 0xffff) | ((EDX
& 0xffff) << 16);
301 raise_exception(EXCP00_DIVZ
);
303 q
= (num
/ den
) & 0xffff;
304 r
= (num
% den
) & 0xffff;
305 EAX
= (EAX
& 0xffff0000) | q
;
306 EDX
= (EDX
& 0xffff0000) | r
;
309 void OPPROTO
op_idivw_AX_T0(void)
313 num
= (EAX
& 0xffff) | ((EDX
& 0xffff) << 16);
317 raise_exception(EXCP00_DIVZ
);
319 q
= (num
/ den
) & 0xffff;
320 r
= (num
% den
) & 0xffff;
321 EAX
= (EAX
& 0xffff0000) | q
;
322 EDX
= (EDX
& 0xffff0000) | r
;
325 void OPPROTO
op_divl_EAX_T0(void)
327 helper_divl_EAX_T0(PARAM1
);
330 void OPPROTO
op_idivl_EAX_T0(void)
332 helper_idivl_EAX_T0(PARAM1
);
335 /* constant load & misc op */
337 void OPPROTO
op_movl_T0_im(void)
342 void OPPROTO
op_addl_T0_im(void)
347 void OPPROTO
op_andl_T0_ffff(void)
352 void OPPROTO
op_andl_T0_im(void)
357 void OPPROTO
op_movl_T0_T1(void)
362 void OPPROTO
op_movl_T1_im(void)
367 void OPPROTO
op_addl_T1_im(void)
372 void OPPROTO
op_movl_T1_A0(void)
377 void OPPROTO
op_movl_A0_im(void)
382 void OPPROTO
op_addl_A0_im(void)
387 void OPPROTO
op_addl_A0_AL(void)
392 void OPPROTO
op_andl_A0_ffff(void)
399 #define MEMSUFFIX _raw
402 #if !defined(CONFIG_USER_ONLY)
403 #define MEMSUFFIX _kernel
406 #define MEMSUFFIX _user
410 /* used for bit operations */
412 void OPPROTO
op_add_bitw_A0_T1(void)
414 A0
+= ((int16_t)T1
>> 4) << 1;
417 void OPPROTO
op_add_bitl_A0_T1(void)
419 A0
+= ((int32_t)T1
>> 5) << 2;
424 void OPPROTO
op_jmp_T0(void)
429 void OPPROTO
op_jmp_im(void)
434 void OPPROTO
op_hlt(void)
436 env
->hflags
&= ~HF_INHIBIT_IRQ_MASK
; /* needed if sti is just before */
437 env
->exception_index
= EXCP_HLT
;
441 void OPPROTO
op_debug(void)
443 env
->exception_index
= EXCP_DEBUG
;
447 void OPPROTO
op_raise_interrupt(void)
450 unsigned int next_eip
;
453 raise_interrupt(intno
, 1, 0, next_eip
);
456 void OPPROTO
op_raise_exception(void)
459 exception_index
= PARAM1
;
460 raise_exception(exception_index
);
463 void OPPROTO
op_into(void)
466 eflags
= cc_table
[CC_OP
].compute_all();
468 raise_interrupt(EXCP04_INTO
, 1, 0, PARAM1
);
473 void OPPROTO
op_cli(void)
475 env
->eflags
&= ~IF_MASK
;
478 void OPPROTO
op_sti(void)
480 env
->eflags
|= IF_MASK
;
483 void OPPROTO
op_set_inhibit_irq(void)
485 env
->hflags
|= HF_INHIBIT_IRQ_MASK
;
488 void OPPROTO
op_reset_inhibit_irq(void)
490 env
->hflags
&= ~HF_INHIBIT_IRQ_MASK
;
494 /* vm86plus instructions */
495 void OPPROTO
op_cli_vm(void)
497 env
->eflags
&= ~VIF_MASK
;
500 void OPPROTO
op_sti_vm(void)
502 env
->eflags
|= VIF_MASK
;
503 if (env
->eflags
& VIP_MASK
) {
505 raise_exception(EXCP0D_GPF
);
511 void OPPROTO
op_boundw(void)
514 low
= ldsw((uint8_t *)A0
);
515 high
= ldsw((uint8_t *)A0
+ 2);
517 if (v
< low
|| v
> high
) {
519 raise_exception(EXCP05_BOUND
);
524 void OPPROTO
op_boundl(void)
527 low
= ldl((uint8_t *)A0
);
528 high
= ldl((uint8_t *)A0
+ 4);
530 if (v
< low
|| v
> high
) {
532 raise_exception(EXCP05_BOUND
);
537 void OPPROTO
op_cmpxchg8b(void)
542 void OPPROTO
op_jmp(void)
544 JUMP_TB(op_jmp
, PARAM1
, 0, PARAM2
);
547 void OPPROTO
op_movl_T0_0(void)
552 void OPPROTO
op_exit_tb(void)
557 /* multiple size ops */
562 #include "ops_template.h"
566 #include "ops_template.h"
570 #include "ops_template.h"
575 void OPPROTO
op_movsbl_T0_T0(void)
580 void OPPROTO
op_movzbl_T0_T0(void)
585 void OPPROTO
op_movswl_T0_T0(void)
590 void OPPROTO
op_movzwl_T0_T0(void)
595 void OPPROTO
op_movswl_EAX_AX(void)
600 void OPPROTO
op_movsbw_AX_AL(void)
602 EAX
= (EAX
& 0xffff0000) | ((int8_t)EAX
& 0xffff);
605 void OPPROTO
op_movslq_EDX_EAX(void)
607 EDX
= (int32_t)EAX
>> 31;
610 void OPPROTO
op_movswl_DX_AX(void)
612 EDX
= (EDX
& 0xffff0000) | (((int16_t)EAX
>> 15) & 0xffff);
615 /* string ops helpers */
617 void OPPROTO
op_addl_ESI_T0(void)
622 void OPPROTO
op_addw_ESI_T0(void)
624 ESI
= (ESI
& ~0xffff) | ((ESI
+ T0
) & 0xffff);
627 void OPPROTO
op_addl_EDI_T0(void)
632 void OPPROTO
op_addw_EDI_T0(void)
634 EDI
= (EDI
& ~0xffff) | ((EDI
+ T0
) & 0xffff);
637 void OPPROTO
op_decl_ECX(void)
642 void OPPROTO
op_decw_ECX(void)
644 ECX
= (ECX
& ~0xffff) | ((ECX
- 1) & 0xffff);
649 void op_addl_A0_SS(void)
651 A0
+= (long)env
->segs
[R_SS
].base
;
654 void op_subl_A0_2(void)
659 void op_subl_A0_4(void)
664 void op_addl_ESP_4(void)
669 void op_addl_ESP_2(void)
674 void op_addw_ESP_4(void)
676 ESP
= (ESP
& ~0xffff) | ((ESP
+ 4) & 0xffff);
679 void op_addw_ESP_2(void)
681 ESP
= (ESP
& ~0xffff) | ((ESP
+ 2) & 0xffff);
684 void op_addl_ESP_im(void)
689 void op_addw_ESP_im(void)
691 ESP
= (ESP
& ~0xffff) | ((ESP
+ PARAM1
) & 0xffff);
694 void OPPROTO
op_rdtsc(void)
699 void OPPROTO
op_cpuid(void)
704 void OPPROTO
op_sysenter(void)
709 void OPPROTO
op_sysexit(void)
714 void OPPROTO
op_rdmsr(void)
719 void OPPROTO
op_wrmsr(void)
727 void OPPROTO
op_aam(void)
734 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
738 void OPPROTO
op_aad(void)
743 ah
= (EAX
>> 8) & 0xff;
744 al
= ((ah
* base
) + al
) & 0xff;
745 EAX
= (EAX
& ~0xffff) | al
;
749 void OPPROTO
op_aaa(void)
755 eflags
= cc_table
[CC_OP
].compute_all();
758 ah
= (EAX
>> 8) & 0xff;
760 icarry
= (al
> 0xf9);
761 if (((al
& 0x0f) > 9 ) || af
) {
762 al
= (al
+ 6) & 0x0f;
763 ah
= (ah
+ 1 + icarry
) & 0xff;
764 eflags
|= CC_C
| CC_A
;
766 eflags
&= ~(CC_C
| CC_A
);
769 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
773 void OPPROTO
op_aas(void)
779 eflags
= cc_table
[CC_OP
].compute_all();
782 ah
= (EAX
>> 8) & 0xff;
785 if (((al
& 0x0f) > 9 ) || af
) {
786 al
= (al
- 6) & 0x0f;
787 ah
= (ah
- 1 - icarry
) & 0xff;
788 eflags
|= CC_C
| CC_A
;
790 eflags
&= ~(CC_C
| CC_A
);
793 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
797 void OPPROTO
op_daa(void)
802 eflags
= cc_table
[CC_OP
].compute_all();
808 if (((al
& 0x0f) > 9 ) || af
) {
809 al
= (al
+ 6) & 0xff;
812 if ((al
> 0x9f) || cf
) {
813 al
= (al
+ 0x60) & 0xff;
816 EAX
= (EAX
& ~0xff) | al
;
817 /* well, speed is not an issue here, so we compute the flags by hand */
818 eflags
|= (al
== 0) << 6; /* zf */
819 eflags
|= parity_table
[al
]; /* pf */
820 eflags
|= (al
& 0x80); /* sf */
824 void OPPROTO
op_das(void)
829 eflags
= cc_table
[CC_OP
].compute_all();
836 if (((al
& 0x0f) > 9 ) || af
) {
840 al
= (al
- 6) & 0xff;
842 if ((al1
> 0x99) || cf
) {
843 al
= (al
- 0x60) & 0xff;
846 EAX
= (EAX
& ~0xff) | al
;
847 /* well, speed is not an issue here, so we compute the flags by hand */
848 eflags
|= (al
== 0) << 6; /* zf */
849 eflags
|= parity_table
[al
]; /* pf */
850 eflags
|= (al
& 0x80); /* sf */
854 /* segment handling */
856 /* never use it with R_CS */
857 void OPPROTO
op_movl_seg_T0(void)
859 load_seg(PARAM1
, T0
);
862 /* faster VM86 version */
863 void OPPROTO
op_movl_seg_T0_vm(void)
868 selector
= T0
& 0xffff;
869 /* env->segs[] access */
870 sc
= (SegmentCache
*)((char *)env
+ PARAM1
);
871 sc
->selector
= selector
;
872 sc
->base
= (void *)(selector
<< 4);
875 void OPPROTO
op_movl_T0_seg(void)
877 T0
= env
->segs
[PARAM1
].selector
;
880 void OPPROTO
op_movl_A0_seg(void)
882 A0
= *(unsigned long *)((char *)env
+ PARAM1
);
885 void OPPROTO
op_addl_A0_seg(void)
887 A0
+= *(unsigned long *)((char *)env
+ PARAM1
);
890 void OPPROTO
op_lsl(void)
895 void OPPROTO
op_lar(void)
900 void OPPROTO
op_verr(void)
905 void OPPROTO
op_verw(void)
910 void OPPROTO
op_arpl(void)
912 if ((T0
& 3) < (T1
& 3)) {
913 /* XXX: emulate bug or 0xff3f0000 oring as in bochs ? */
914 T0
= (T0
& ~3) | (T1
& 3);
922 void OPPROTO
op_arpl_update(void)
925 eflags
= cc_table
[CC_OP
].compute_all();
926 CC_SRC
= (eflags
& ~CC_Z
) | T1
;
929 /* T0: segment, T1:eip */
930 void OPPROTO
op_ljmp_protected_T0_T1(void)
932 helper_ljmp_protected_T0_T1(PARAM1
);
935 void OPPROTO
op_lcall_real_T0_T1(void)
937 helper_lcall_real_T0_T1(PARAM1
, PARAM2
);
940 void OPPROTO
op_lcall_protected_T0_T1(void)
942 helper_lcall_protected_T0_T1(PARAM1
, PARAM2
);
945 void OPPROTO
op_iret_real(void)
947 helper_iret_real(PARAM1
);
950 void OPPROTO
op_iret_protected(void)
952 helper_iret_protected(PARAM1
, PARAM2
);
955 void OPPROTO
op_lret_protected(void)
957 helper_lret_protected(PARAM1
, PARAM2
);
960 void OPPROTO
op_lldt_T0(void)
965 void OPPROTO
op_ltr_T0(void)
970 /* CR registers access */
971 void OPPROTO
op_movl_crN_T0(void)
973 helper_movl_crN_T0(PARAM1
);
976 /* DR registers access */
977 void OPPROTO
op_movl_drN_T0(void)
979 helper_movl_drN_T0(PARAM1
);
982 void OPPROTO
op_lmsw_T0(void)
984 /* only 4 lower bits of CR0 are modified. PE cannot be set to zero
985 if already set to one. */
986 T0
= (env
->cr
[0] & ~0xe) | (T0
& 0xf);
987 helper_movl_crN_T0(0);
990 void OPPROTO
op_invlpg_A0(void)
995 void OPPROTO
op_movl_T0_env(void)
997 T0
= *(uint32_t *)((char *)env
+ PARAM1
);
1000 void OPPROTO
op_movl_env_T0(void)
1002 *(uint32_t *)((char *)env
+ PARAM1
) = T0
;
1005 void OPPROTO
op_movl_env_T1(void)
1007 *(uint32_t *)((char *)env
+ PARAM1
) = T1
;
1010 void OPPROTO
op_clts(void)
1012 env
->cr
[0] &= ~CR0_TS_MASK
;
1013 env
->hflags
&= ~HF_TS_MASK
;
1016 /* flags handling */
1018 /* slow jumps cases : in order to avoid calling a function with a
1019 pointer (which can generate a stack frame on PowerPC), we use
1020 op_setcc to set T0 and then call op_jcc. */
1021 void OPPROTO
op_jcc(void)
1024 JUMP_TB(op_jcc
, PARAM1
, 0, PARAM2
);
1026 JUMP_TB(op_jcc
, PARAM1
, 1, PARAM3
);
1030 void OPPROTO
op_jcc_im(void)
1039 /* slow set cases (compute x86 flags) */
1040 void OPPROTO
op_seto_T0_cc(void)
1043 eflags
= cc_table
[CC_OP
].compute_all();
1044 T0
= (eflags
>> 11) & 1;
1047 void OPPROTO
op_setb_T0_cc(void)
1049 T0
= cc_table
[CC_OP
].compute_c();
1052 void OPPROTO
op_setz_T0_cc(void)
1055 eflags
= cc_table
[CC_OP
].compute_all();
1056 T0
= (eflags
>> 6) & 1;
1059 void OPPROTO
op_setbe_T0_cc(void)
1062 eflags
= cc_table
[CC_OP
].compute_all();
1063 T0
= (eflags
& (CC_Z
| CC_C
)) != 0;
1066 void OPPROTO
op_sets_T0_cc(void)
1069 eflags
= cc_table
[CC_OP
].compute_all();
1070 T0
= (eflags
>> 7) & 1;
1073 void OPPROTO
op_setp_T0_cc(void)
1076 eflags
= cc_table
[CC_OP
].compute_all();
1077 T0
= (eflags
>> 2) & 1;
1080 void OPPROTO
op_setl_T0_cc(void)
1083 eflags
= cc_table
[CC_OP
].compute_all();
1084 T0
= ((eflags
^ (eflags
>> 4)) >> 7) & 1;
1087 void OPPROTO
op_setle_T0_cc(void)
1090 eflags
= cc_table
[CC_OP
].compute_all();
1091 T0
= (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
)) != 0;
1094 void OPPROTO
op_xor_T0_1(void)
1099 void OPPROTO
op_set_cc_op(void)
1104 /* XXX: clear VIF/VIP in all ops ? */
1106 void OPPROTO
op_movl_eflags_T0(void)
1108 load_eflags(T0
, (TF_MASK
| AC_MASK
| ID_MASK
| NT_MASK
));
1111 void OPPROTO
op_movw_eflags_T0(void)
1113 load_eflags(T0
, (TF_MASK
| AC_MASK
| ID_MASK
| NT_MASK
) & 0xffff);
1116 void OPPROTO
op_movl_eflags_T0_io(void)
1118 load_eflags(T0
, (TF_MASK
| AC_MASK
| ID_MASK
| NT_MASK
| IF_MASK
));
1121 void OPPROTO
op_movw_eflags_T0_io(void)
1123 load_eflags(T0
, (TF_MASK
| AC_MASK
| ID_MASK
| NT_MASK
| IF_MASK
) & 0xffff);
1126 void OPPROTO
op_movl_eflags_T0_cpl0(void)
1128 load_eflags(T0
, (TF_MASK
| AC_MASK
| ID_MASK
| NT_MASK
| IF_MASK
| IOPL_MASK
));
1131 void OPPROTO
op_movw_eflags_T0_cpl0(void)
1133 load_eflags(T0
, (TF_MASK
| AC_MASK
| ID_MASK
| NT_MASK
| IF_MASK
| IOPL_MASK
) & 0xffff);
1137 /* vm86plus version */
1138 void OPPROTO
op_movw_eflags_T0_vm(void)
1142 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1143 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1144 /* we also update some system flags as in user mode */
1145 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK16
| VIF_MASK
)) |
1146 (eflags
& FL_UPDATE_MASK16
);
1147 if (eflags
& IF_MASK
) {
1148 env
->eflags
|= VIF_MASK
;
1149 if (env
->eflags
& VIP_MASK
) {
1151 raise_exception(EXCP0D_GPF
);
1157 void OPPROTO
op_movl_eflags_T0_vm(void)
1161 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1162 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1163 /* we also update some system flags as in user mode */
1164 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK32
| VIF_MASK
)) |
1165 (eflags
& FL_UPDATE_MASK32
);
1166 if (eflags
& IF_MASK
) {
1167 env
->eflags
|= VIF_MASK
;
1168 if (env
->eflags
& VIP_MASK
) {
1170 raise_exception(EXCP0D_GPF
);
1177 /* XXX: compute only O flag */
1178 void OPPROTO
op_movb_eflags_T0(void)
1181 of
= cc_table
[CC_OP
].compute_all() & CC_O
;
1182 CC_SRC
= (T0
& (CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
)) | of
;
1185 void OPPROTO
op_movl_T0_eflags(void)
1188 eflags
= cc_table
[CC_OP
].compute_all();
1189 eflags
|= (DF
& DF_MASK
);
1190 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
);
1194 /* vm86plus version */
1196 void OPPROTO
op_movl_T0_eflags_vm(void)
1199 eflags
= cc_table
[CC_OP
].compute_all();
1200 eflags
|= (DF
& DF_MASK
);
1201 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
| IF_MASK
);
1202 if (env
->eflags
& VIF_MASK
)
1208 void OPPROTO
op_cld(void)
1213 void OPPROTO
op_std(void)
1218 void OPPROTO
op_clc(void)
1221 eflags
= cc_table
[CC_OP
].compute_all();
1226 void OPPROTO
op_stc(void)
1229 eflags
= cc_table
[CC_OP
].compute_all();
1234 void OPPROTO
op_cmc(void)
1237 eflags
= cc_table
[CC_OP
].compute_all();
1242 void OPPROTO
op_salc(void)
1245 cf
= cc_table
[CC_OP
].compute_c();
1246 EAX
= (EAX
& ~0xff) | ((-cf
) & 0xff);
1249 static int compute_all_eflags(void)
1254 static int compute_c_eflags(void)
1256 return CC_SRC
& CC_C
;
1259 CCTable cc_table
[CC_OP_NB
] = {
1260 [CC_OP_DYNAMIC
] = { /* should never happen */ },
1262 [CC_OP_EFLAGS
] = { compute_all_eflags
, compute_c_eflags
},
1264 [CC_OP_MULB
] = { compute_all_mulb
, compute_c_mull
},
1265 [CC_OP_MULW
] = { compute_all_mulw
, compute_c_mull
},
1266 [CC_OP_MULL
] = { compute_all_mull
, compute_c_mull
},
1268 [CC_OP_ADDB
] = { compute_all_addb
, compute_c_addb
},
1269 [CC_OP_ADDW
] = { compute_all_addw
, compute_c_addw
},
1270 [CC_OP_ADDL
] = { compute_all_addl
, compute_c_addl
},
1272 [CC_OP_ADCB
] = { compute_all_adcb
, compute_c_adcb
},
1273 [CC_OP_ADCW
] = { compute_all_adcw
, compute_c_adcw
},
1274 [CC_OP_ADCL
] = { compute_all_adcl
, compute_c_adcl
},
1276 [CC_OP_SUBB
] = { compute_all_subb
, compute_c_subb
},
1277 [CC_OP_SUBW
] = { compute_all_subw
, compute_c_subw
},
1278 [CC_OP_SUBL
] = { compute_all_subl
, compute_c_subl
},
1280 [CC_OP_SBBB
] = { compute_all_sbbb
, compute_c_sbbb
},
1281 [CC_OP_SBBW
] = { compute_all_sbbw
, compute_c_sbbw
},
1282 [CC_OP_SBBL
] = { compute_all_sbbl
, compute_c_sbbl
},
1284 [CC_OP_LOGICB
] = { compute_all_logicb
, compute_c_logicb
},
1285 [CC_OP_LOGICW
] = { compute_all_logicw
, compute_c_logicw
},
1286 [CC_OP_LOGICL
] = { compute_all_logicl
, compute_c_logicl
},
1288 [CC_OP_INCB
] = { compute_all_incb
, compute_c_incl
},
1289 [CC_OP_INCW
] = { compute_all_incw
, compute_c_incl
},
1290 [CC_OP_INCL
] = { compute_all_incl
, compute_c_incl
},
1292 [CC_OP_DECB
] = { compute_all_decb
, compute_c_incl
},
1293 [CC_OP_DECW
] = { compute_all_decw
, compute_c_incl
},
1294 [CC_OP_DECL
] = { compute_all_decl
, compute_c_incl
},
1296 [CC_OP_SHLB
] = { compute_all_shlb
, compute_c_shlb
},
1297 [CC_OP_SHLW
] = { compute_all_shlw
, compute_c_shlw
},
1298 [CC_OP_SHLL
] = { compute_all_shll
, compute_c_shll
},
1300 [CC_OP_SARB
] = { compute_all_sarb
, compute_c_sarl
},
1301 [CC_OP_SARW
] = { compute_all_sarw
, compute_c_sarl
},
1302 [CC_OP_SARL
] = { compute_all_sarl
, compute_c_sarl
},
1305 /* floating point support. Some of the code for complicated x87
1306 functions comes from the LGPL'ed x86 emulator found in the Willows
1307 TWIN windows emulator. */
1309 #if defined(__powerpc__)
1310 extern CPU86_LDouble
copysign(CPU86_LDouble
, CPU86_LDouble
);
1312 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1313 double qemu_rint(double x
)
1315 double y
= 4503599627370496.0;
1326 #define rint qemu_rint
1331 void OPPROTO
op_flds_FT0_A0(void)
1333 #ifdef USE_FP_CONVERT
1334 FP_CONVERT
.i32
= ldl((void *)A0
);
1337 FT0
= ldfl((void *)A0
);
1341 void OPPROTO
op_fldl_FT0_A0(void)
1343 #ifdef USE_FP_CONVERT
1344 FP_CONVERT
.i64
= ldq((void *)A0
);
1347 FT0
= ldfq((void *)A0
);
1351 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1352 #ifdef USE_INT_TO_FLOAT_HELPERS
1354 void helper_fild_FT0_A0(void)
1356 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1359 void helper_fildl_FT0_A0(void)
1361 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1364 void helper_fildll_FT0_A0(void)
1366 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1369 void OPPROTO
op_fild_FT0_A0(void)
1371 helper_fild_FT0_A0();
1374 void OPPROTO
op_fildl_FT0_A0(void)
1376 helper_fildl_FT0_A0();
1379 void OPPROTO
op_fildll_FT0_A0(void)
1381 helper_fildll_FT0_A0();
1386 void OPPROTO
op_fild_FT0_A0(void)
1388 #ifdef USE_FP_CONVERT
1389 FP_CONVERT
.i32
= ldsw((void *)A0
);
1390 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1392 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1396 void OPPROTO
op_fildl_FT0_A0(void)
1398 #ifdef USE_FP_CONVERT
1399 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1400 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1402 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1406 void OPPROTO
op_fildll_FT0_A0(void)
1408 #ifdef USE_FP_CONVERT
1409 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1410 FT0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1412 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1419 void OPPROTO
op_flds_ST0_A0(void)
1422 new_fpstt
= (env
->fpstt
- 1) & 7;
1423 #ifdef USE_FP_CONVERT
1424 FP_CONVERT
.i32
= ldl((void *)A0
);
1425 env
->fpregs
[new_fpstt
] = FP_CONVERT
.f
;
1427 env
->fpregs
[new_fpstt
] = ldfl((void *)A0
);
1429 env
->fpstt
= new_fpstt
;
1430 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1433 void OPPROTO
op_fldl_ST0_A0(void)
1436 new_fpstt
= (env
->fpstt
- 1) & 7;
1437 #ifdef USE_FP_CONVERT
1438 FP_CONVERT
.i64
= ldq((void *)A0
);
1439 env
->fpregs
[new_fpstt
] = FP_CONVERT
.d
;
1441 env
->fpregs
[new_fpstt
] = ldfq((void *)A0
);
1443 env
->fpstt
= new_fpstt
;
1444 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1447 void OPPROTO
op_fldt_ST0_A0(void)
1449 helper_fldt_ST0_A0();
1452 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1453 #ifdef USE_INT_TO_FLOAT_HELPERS
1455 void helper_fild_ST0_A0(void)
1458 new_fpstt
= (env
->fpstt
- 1) & 7;
1459 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)ldsw((void *)A0
);
1460 env
->fpstt
= new_fpstt
;
1461 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1464 void helper_fildl_ST0_A0(void)
1467 new_fpstt
= (env
->fpstt
- 1) & 7;
1468 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1469 env
->fpstt
= new_fpstt
;
1470 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1473 void helper_fildll_ST0_A0(void)
1476 new_fpstt
= (env
->fpstt
- 1) & 7;
1477 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1478 env
->fpstt
= new_fpstt
;
1479 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1482 void OPPROTO
op_fild_ST0_A0(void)
1484 helper_fild_ST0_A0();
1487 void OPPROTO
op_fildl_ST0_A0(void)
1489 helper_fildl_ST0_A0();
1492 void OPPROTO
op_fildll_ST0_A0(void)
1494 helper_fildll_ST0_A0();
1499 void OPPROTO
op_fild_ST0_A0(void)
1502 new_fpstt
= (env
->fpstt
- 1) & 7;
1503 #ifdef USE_FP_CONVERT
1504 FP_CONVERT
.i32
= ldsw((void *)A0
);
1505 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i32
;
1507 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)ldsw((void *)A0
);
1509 env
->fpstt
= new_fpstt
;
1510 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1513 void OPPROTO
op_fildl_ST0_A0(void)
1516 new_fpstt
= (env
->fpstt
- 1) & 7;
1517 #ifdef USE_FP_CONVERT
1518 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1519 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i32
;
1521 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1523 env
->fpstt
= new_fpstt
;
1524 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1527 void OPPROTO
op_fildll_ST0_A0(void)
1530 new_fpstt
= (env
->fpstt
- 1) & 7;
1531 #ifdef USE_FP_CONVERT
1532 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1533 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)FP_CONVERT
.i64
;
1535 env
->fpregs
[new_fpstt
] = (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1537 env
->fpstt
= new_fpstt
;
1538 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
1545 void OPPROTO
op_fsts_ST0_A0(void)
1547 #ifdef USE_FP_CONVERT
1548 FP_CONVERT
.f
= (float)ST0
;
1549 stfl((void *)A0
, FP_CONVERT
.f
);
1551 stfl((void *)A0
, (float)ST0
);
1555 void OPPROTO
op_fstl_ST0_A0(void)
1557 stfq((void *)A0
, (double)ST0
);
1560 void OPPROTO
op_fstt_ST0_A0(void)
1562 helper_fstt_ST0_A0();
1565 void OPPROTO
op_fist_ST0_A0(void)
1567 #if defined(__sparc__) && !defined(__sparc_v9__)
1568 register CPU86_LDouble d
asm("o0");
1576 if (val
!= (int16_t)val
)
1578 stw((void *)A0
, val
);
1581 void OPPROTO
op_fistl_ST0_A0(void)
1583 #if defined(__sparc__) && !defined(__sparc_v9__)
1584 register CPU86_LDouble d
asm("o0");
1592 stl((void *)A0
, val
);
1595 void OPPROTO
op_fistll_ST0_A0(void)
1597 #if defined(__sparc__) && !defined(__sparc_v9__)
1598 register CPU86_LDouble d
asm("o0");
1606 stq((void *)A0
, val
);
1609 void OPPROTO
op_fbld_ST0_A0(void)
1611 helper_fbld_ST0_A0();
1614 void OPPROTO
op_fbst_ST0_A0(void)
1616 helper_fbst_ST0_A0();
1621 void OPPROTO
op_fpush(void)
1626 void OPPROTO
op_fpop(void)
1631 void OPPROTO
op_fdecstp(void)
1633 env
->fpstt
= (env
->fpstt
- 1) & 7;
1634 env
->fpus
&= (~0x4700);
1637 void OPPROTO
op_fincstp(void)
1639 env
->fpstt
= (env
->fpstt
+ 1) & 7;
1640 env
->fpus
&= (~0x4700);
1643 void OPPROTO
op_ffree_STN(void)
1645 env
->fptags
[(env
->fpstt
+ PARAM1
) & 7] = 1;
1648 void OPPROTO
op_fmov_ST0_FT0(void)
1653 void OPPROTO
op_fmov_FT0_STN(void)
1658 void OPPROTO
op_fmov_ST0_STN(void)
1663 void OPPROTO
op_fmov_STN_ST0(void)
1668 void OPPROTO
op_fxchg_ST0_STN(void)
1676 /* FPU operations */
1678 /* XXX: handle nans */
1679 void OPPROTO
op_fcom_ST0_FT0(void)
1681 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1683 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1684 else if (ST0
== FT0
)
1685 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1689 /* XXX: handle nans */
1690 void OPPROTO
op_fucom_ST0_FT0(void)
1692 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1694 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1695 else if (ST0
== FT0
)
1696 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1700 /* XXX: handle nans */
1701 void OPPROTO
op_fcomi_ST0_FT0(void)
1704 eflags
= cc_table
[CC_OP
].compute_all();
1705 eflags
&= ~(CC_Z
| CC_P
| CC_C
);
1708 else if (ST0
== FT0
)
1714 /* XXX: handle nans */
1715 void OPPROTO
op_fucomi_ST0_FT0(void)
1718 eflags
= cc_table
[CC_OP
].compute_all();
1719 eflags
&= ~(CC_Z
| CC_P
| CC_C
);
1722 else if (ST0
== FT0
)
1728 void OPPROTO
op_fcmov_ST0_STN_T0(void)
1736 void OPPROTO
op_fadd_ST0_FT0(void)
1741 void OPPROTO
op_fmul_ST0_FT0(void)
1746 void OPPROTO
op_fsub_ST0_FT0(void)
1751 void OPPROTO
op_fsubr_ST0_FT0(void)
1756 void OPPROTO
op_fdiv_ST0_FT0(void)
1758 ST0
= helper_fdiv(ST0
, FT0
);
1761 void OPPROTO
op_fdivr_ST0_FT0(void)
1763 ST0
= helper_fdiv(FT0
, ST0
);
1766 /* fp operations between STN and ST0 */
1768 void OPPROTO
op_fadd_STN_ST0(void)
1773 void OPPROTO
op_fmul_STN_ST0(void)
1778 void OPPROTO
op_fsub_STN_ST0(void)
1783 void OPPROTO
op_fsubr_STN_ST0(void)
1790 void OPPROTO
op_fdiv_STN_ST0(void)
1794 *p
= helper_fdiv(*p
, ST0
);
1797 void OPPROTO
op_fdivr_STN_ST0(void)
1801 *p
= helper_fdiv(ST0
, *p
);
1804 /* misc FPU operations */
1805 void OPPROTO
op_fchs_ST0(void)
1810 void OPPROTO
op_fabs_ST0(void)
1815 void OPPROTO
op_fxam_ST0(void)
1820 void OPPROTO
op_fld1_ST0(void)
1825 void OPPROTO
op_fldl2t_ST0(void)
1830 void OPPROTO
op_fldl2e_ST0(void)
1835 void OPPROTO
op_fldpi_ST0(void)
1840 void OPPROTO
op_fldlg2_ST0(void)
1845 void OPPROTO
op_fldln2_ST0(void)
1850 void OPPROTO
op_fldz_ST0(void)
1855 void OPPROTO
op_fldz_FT0(void)
1860 /* associated heplers to reduce generated code length and to simplify
1861 relocation (FP constants are usually stored in .rodata section) */
1863 void OPPROTO
op_f2xm1(void)
1868 void OPPROTO
op_fyl2x(void)
1873 void OPPROTO
op_fptan(void)
1878 void OPPROTO
op_fpatan(void)
1883 void OPPROTO
op_fxtract(void)
1888 void OPPROTO
op_fprem1(void)
1894 void OPPROTO
op_fprem(void)
1899 void OPPROTO
op_fyl2xp1(void)
1904 void OPPROTO
op_fsqrt(void)
1909 void OPPROTO
op_fsincos(void)
1914 void OPPROTO
op_frndint(void)
1919 void OPPROTO
op_fscale(void)
1924 void OPPROTO
op_fsin(void)
1929 void OPPROTO
op_fcos(void)
1934 void OPPROTO
op_fnstsw_A0(void)
1937 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
1938 stw((void *)A0
, fpus
);
1941 void OPPROTO
op_fnstsw_EAX(void)
1944 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
1945 EAX
= (EAX
& 0xffff0000) | fpus
;
1948 void OPPROTO
op_fnstcw_A0(void)
1950 stw((void *)A0
, env
->fpuc
);
1953 void OPPROTO
op_fldcw_A0(void)
1956 env
->fpuc
= lduw((void *)A0
);
1957 /* set rounding mode */
1959 switch(env
->fpuc
& RC_MASK
) {
1974 fpsetround(rnd_type
);
1976 switch(env
->fpuc
& RC_MASK
) {
1979 rnd_type
= FE_TONEAREST
;
1982 rnd_type
= FE_DOWNWARD
;
1985 rnd_type
= FE_UPWARD
;
1988 rnd_type
= FE_TOWARDZERO
;
1991 fesetround(rnd_type
);
1995 void OPPROTO
op_fclex(void)
1997 env
->fpus
&= 0x7f00;
2000 void OPPROTO
op_fwait(void)
2002 if (env
->fpus
& FPUS_SE
)
2003 fpu_raise_exception();
2007 void OPPROTO
op_fninit(void)
2022 void OPPROTO
op_fnstenv_A0(void)
2024 helper_fstenv((uint8_t *)A0
, PARAM1
);
2027 void OPPROTO
op_fldenv_A0(void)
2029 helper_fldenv((uint8_t *)A0
, PARAM1
);
2032 void OPPROTO
op_fnsave_A0(void)
2034 helper_fsave((uint8_t *)A0
, PARAM1
);
2037 void OPPROTO
op_frstor_A0(void)
2039 helper_frstor((uint8_t *)A0
, PARAM1
);
2042 /* threading support */
2043 void OPPROTO
op_lock(void)
2048 void OPPROTO
op_unlock(void)