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 /* NOTE: data are not static to force relocation generation by GCC */
24 uint8_t parity_table
[256] = {
25 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
26 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
27 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
28 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
29 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
30 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
31 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
32 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
33 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
34 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
35 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
36 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
37 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
38 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
39 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
40 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
41 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
42 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
43 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
44 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
45 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
46 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
47 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
48 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
49 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
50 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
51 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
52 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
53 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
54 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
55 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
56 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
60 const uint8_t rclw_table
[32] = {
61 0, 1, 2, 3, 4, 5, 6, 7,
62 8, 9,10,11,12,13,14,15,
63 16, 0, 1, 2, 3, 4, 5, 6,
64 7, 8, 9,10,11,12,13,14,
68 const uint8_t rclb_table
[32] = {
69 0, 1, 2, 3, 4, 5, 6, 7,
70 8, 0, 1, 2, 3, 4, 5, 6,
71 7, 8, 0, 1, 2, 3, 4, 5,
72 6, 7, 8, 0, 1, 2, 3, 4,
76 /* an array of Intel 80-bit FP constants, to be loaded via integer ops */
77 typedef unsigned short f15ld
[5];
80 /*0*/ {0x0000,0x0000,0x0000,0x0000,0x0000},
81 /*1*/ {0x0000,0x0000,0x0000,0x8000,0x3fff},
82 /*pi*/ {0xc235,0x2168,0xdaa2,0xc90f,0x4000},
83 /*lg2*/ {0xf799,0xfbcf,0x9a84,0x9a20,0x3ffd},
84 /*ln2*/ {0x79ac,0xd1cf,0x17f7,0xb172,0x3ffe},
85 /*l2e*/ {0xf0bc,0x5c17,0x3b29,0xb8aa,0x3fff},
86 /*l2t*/ {0x8afe,0xcd1b,0x784b,0xd49a,0x4000}
89 /* the same, 64-bit version */
90 typedef unsigned short f15ld
[4];
93 #ifndef WORDS_BIGENDIAN
94 /*0*/ {0x0000,0x0000,0x0000,0x0000},
95 /*1*/ {0x0000,0x0000,0x0000,0x3ff0},
96 /*pi*/ {0x2d18,0x5444,0x21fb,0x4009},
97 /*lg2*/ {0x79ff,0x509f,0x4413,0x3fd3},
98 /*ln2*/ {0x39ef,0xfefa,0x2e42,0x3fe6},
99 /*l2e*/ {0x82fe,0x652b,0x1547,0x3ff7},
100 /*l2t*/ {0xa371,0x0979,0x934f,0x400a}
102 /*0*/ {0x0000,0x0000,0x0000,0x0000},
103 /*1*/ {0x3ff0,0x0000,0x0000,0x0000},
104 /*pi*/ {0x4009,0x21fb,0x5444,0x2d18},
105 /*lg2*/ {0x3fd3,0x4413,0x509f,0x79ff},
106 /*ln2*/ {0x3fe6,0x2e42,0xfefa,0x39ef},
107 /*l2e*/ {0x3ff7,0x1547,0x652b,0x82fe},
108 /*l2t*/ {0x400a,0x934f,0x0979,0xa371}
113 /* n must be a constant to be efficient */
114 static inline int lshift(int x
, int n
)
122 /* we define the various pieces of code used by the JIT */
126 #include "opreg_template.h"
132 #include "opreg_template.h"
138 #include "opreg_template.h"
144 #include "opreg_template.h"
150 #include "opreg_template.h"
156 #include "opreg_template.h"
162 #include "opreg_template.h"
168 #include "opreg_template.h"
172 /* operations with flags */
174 void OPPROTO
op_addl_T0_T1_cc(void)
181 void OPPROTO
op_orl_T0_T1_cc(void)
187 void OPPROTO
op_andl_T0_T1_cc(void)
193 void OPPROTO
op_subl_T0_T1_cc(void)
200 void OPPROTO
op_xorl_T0_T1_cc(void)
206 void OPPROTO
op_cmpl_T0_T1_cc(void)
212 void OPPROTO
op_negl_T0_cc(void)
219 void OPPROTO
op_incl_T0_cc(void)
221 CC_SRC
= cc_table
[CC_OP
].compute_c();
226 void OPPROTO
op_decl_T0_cc(void)
228 CC_SRC
= cc_table
[CC_OP
].compute_c();
233 void OPPROTO
op_testl_T0_T1_cc(void)
238 /* operations without flags */
240 void OPPROTO
op_addl_T0_T1(void)
245 void OPPROTO
op_orl_T0_T1(void)
250 void OPPROTO
op_andl_T0_T1(void)
255 void OPPROTO
op_subl_T0_T1(void)
260 void OPPROTO
op_xorl_T0_T1(void)
265 void OPPROTO
op_negl_T0(void)
270 void OPPROTO
op_incl_T0(void)
275 void OPPROTO
op_decl_T0(void)
280 void OPPROTO
op_notl_T0(void)
285 void OPPROTO
op_bswapl_T0(void)
290 /* multiply/divide */
291 void OPPROTO
op_mulb_AL_T0(void)
294 res
= (uint8_t)EAX
* (uint8_t)T0
;
295 EAX
= (EAX
& 0xffff0000) | res
;
296 CC_SRC
= (res
& 0xff00);
299 void OPPROTO
op_imulb_AL_T0(void)
302 res
= (int8_t)EAX
* (int8_t)T0
;
303 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
304 CC_SRC
= (res
!= (int8_t)res
);
307 void OPPROTO
op_mulw_AX_T0(void)
310 res
= (uint16_t)EAX
* (uint16_t)T0
;
311 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
312 EDX
= (EDX
& 0xffff0000) | ((res
>> 16) & 0xffff);
316 void OPPROTO
op_imulw_AX_T0(void)
319 res
= (int16_t)EAX
* (int16_t)T0
;
320 EAX
= (EAX
& 0xffff0000) | (res
& 0xffff);
321 EDX
= (EDX
& 0xffff0000) | ((res
>> 16) & 0xffff);
322 CC_SRC
= (res
!= (int16_t)res
);
325 void OPPROTO
op_mull_EAX_T0(void)
328 res
= (uint64_t)((uint32_t)EAX
) * (uint64_t)((uint32_t)T0
);
334 void OPPROTO
op_imull_EAX_T0(void)
337 res
= (int64_t)((int32_t)EAX
) * (int64_t)((int32_t)T0
);
340 CC_SRC
= (res
!= (int32_t)res
);
343 void OPPROTO
op_imulw_T0_T1(void)
346 res
= (int16_t)T0
* (int16_t)T1
;
348 CC_SRC
= (res
!= (int16_t)res
);
351 void OPPROTO
op_imull_T0_T1(void)
354 res
= (int64_t)((int32_t)T0
) * (int64_t)((int32_t)T1
);
356 CC_SRC
= (res
!= (int32_t)res
);
359 /* division, flags are undefined */
360 /* XXX: add exceptions for overflow */
361 void OPPROTO
op_divb_AL_T0(void)
363 unsigned int num
, den
, q
, r
;
365 num
= (EAX
& 0xffff);
368 raise_exception(EXCP00_DIVZ
);
369 q
= (num
/ den
) & 0xff;
370 r
= (num
% den
) & 0xff;
371 EAX
= (EAX
& 0xffff0000) | (r
<< 8) | q
;
374 void OPPROTO
op_idivb_AL_T0(void)
381 raise_exception(EXCP00_DIVZ
);
382 q
= (num
/ den
) & 0xff;
383 r
= (num
% den
) & 0xff;
384 EAX
= (EAX
& 0xffff0000) | (r
<< 8) | q
;
387 void OPPROTO
op_divw_AX_T0(void)
389 unsigned int num
, den
, q
, r
;
391 num
= (EAX
& 0xffff) | ((EDX
& 0xffff) << 16);
394 raise_exception(EXCP00_DIVZ
);
395 q
= (num
/ den
) & 0xffff;
396 r
= (num
% den
) & 0xffff;
397 EAX
= (EAX
& 0xffff0000) | q
;
398 EDX
= (EDX
& 0xffff0000) | r
;
401 void OPPROTO
op_idivw_AX_T0(void)
405 num
= (EAX
& 0xffff) | ((EDX
& 0xffff) << 16);
408 raise_exception(EXCP00_DIVZ
);
409 q
= (num
/ den
) & 0xffff;
410 r
= (num
% den
) & 0xffff;
411 EAX
= (EAX
& 0xffff0000) | q
;
412 EDX
= (EDX
& 0xffff0000) | r
;
415 void OPPROTO
op_divl_EAX_T0(void)
417 unsigned int den
, q
, r
;
420 num
= EAX
| ((uint64_t)EDX
<< 32);
423 raise_exception(EXCP00_DIVZ
);
430 void OPPROTO
op_idivl_EAX_T0(void)
435 num
= EAX
| ((uint64_t)EDX
<< 32);
438 raise_exception(EXCP00_DIVZ
);
445 /* constant load & misc op */
447 void OPPROTO
op_movl_T0_im(void)
452 void OPPROTO
op_addl_T0_im(void)
457 void OPPROTO
op_andl_T0_ffff(void)
462 void OPPROTO
op_movl_T0_T1(void)
467 void OPPROTO
op_movl_T1_im(void)
472 void OPPROTO
op_addl_T1_im(void)
477 void OPPROTO
op_movl_T1_A0(void)
482 void OPPROTO
op_movl_A0_im(void)
487 void OPPROTO
op_addl_A0_im(void)
492 void OPPROTO
op_addl_A0_AL(void)
497 void OPPROTO
op_andl_A0_ffff(void)
504 void OPPROTO
op_ldub_T0_A0(void)
506 T0
= ldub((uint8_t *)A0
);
509 void OPPROTO
op_ldsb_T0_A0(void)
511 T0
= ldsb((int8_t *)A0
);
514 void OPPROTO
op_lduw_T0_A0(void)
516 T0
= lduw((uint8_t *)A0
);
519 void OPPROTO
op_ldsw_T0_A0(void)
521 T0
= ldsw((int8_t *)A0
);
524 void OPPROTO
op_ldl_T0_A0(void)
526 T0
= ldl((uint8_t *)A0
);
529 void OPPROTO
op_ldub_T1_A0(void)
531 T1
= ldub((uint8_t *)A0
);
534 void OPPROTO
op_ldsb_T1_A0(void)
536 T1
= ldsb((int8_t *)A0
);
539 void OPPROTO
op_lduw_T1_A0(void)
541 T1
= lduw((uint8_t *)A0
);
544 void OPPROTO
op_ldsw_T1_A0(void)
546 T1
= ldsw((int8_t *)A0
);
549 void OPPROTO
op_ldl_T1_A0(void)
551 T1
= ldl((uint8_t *)A0
);
554 void OPPROTO
op_stb_T0_A0(void)
556 stb((uint8_t *)A0
, T0
);
559 void OPPROTO
op_stw_T0_A0(void)
561 stw((uint8_t *)A0
, T0
);
564 void OPPROTO
op_stl_T0_A0(void)
566 stl((uint8_t *)A0
, T0
);
569 /* used for bit operations */
571 void OPPROTO
op_add_bitw_A0_T1(void)
573 A0
+= ((int32_t)T1
>> 4) << 1;
576 void OPPROTO
op_add_bitl_A0_T1(void)
578 A0
+= ((int32_t)T1
>> 5) << 2;
583 void OPPROTO
op_jmp_T0(void)
588 void OPPROTO
op_jmp_im(void)
593 void OPPROTO
op_int_im(void)
596 raise_exception(EXCP0D_GPF
);
599 void OPPROTO
op_int3(void)
602 raise_exception(EXCP03_INT3
);
605 void OPPROTO
op_into(void)
608 eflags
= cc_table
[CC_OP
].compute_all();
610 raise_exception(EXCP04_INTO
);
614 void OPPROTO
op_boundw(void)
617 low
= ldsw((uint8_t *)A0
);
618 high
= ldsw((uint8_t *)A0
+ 2);
620 if (v
< low
|| v
> high
)
621 raise_exception(EXCP05_BOUND
);
625 void OPPROTO
op_boundl(void)
628 low
= ldl((uint8_t *)A0
);
629 high
= ldl((uint8_t *)A0
+ 4);
631 if (v
< low
|| v
> high
)
632 raise_exception(EXCP05_BOUND
);
636 void OPPROTO
op_cmpxchg8b(void)
641 eflags
= cc_table
[CC_OP
].compute_all();
642 d
= ldq((uint8_t *)A0
);
643 if (d
== (((uint64_t)EDX
<< 32) | EAX
)) {
644 stq((uint8_t *)A0
, ((uint64_t)ECX
<< 32) | EBX
);
660 #include "ops_template.h"
664 #include "ops_template.h"
668 #include "ops_template.h"
673 void OPPROTO
op_movsbl_T0_T0(void)
678 void OPPROTO
op_movzbl_T0_T0(void)
683 void OPPROTO
op_movswl_T0_T0(void)
688 void OPPROTO
op_movzwl_T0_T0(void)
693 void OPPROTO
op_movswl_EAX_AX(void)
698 void OPPROTO
op_movsbw_AX_AL(void)
700 EAX
= (EAX
& 0xffff0000) | ((int8_t)EAX
& 0xffff);
703 void OPPROTO
op_movslq_EDX_EAX(void)
705 EDX
= (int32_t)EAX
>> 31;
708 void OPPROTO
op_movswl_DX_AX(void)
710 EDX
= (EDX
& 0xffff0000) | (((int16_t)EAX
>> 15) & 0xffff);
715 void op_pushl_T0(void)
719 stl((void *)offset
, T0
);
720 /* modify ESP after to handle exceptions correctly */
724 void op_pushw_T0(void)
728 stw((void *)offset
, T0
);
729 /* modify ESP after to handle exceptions correctly */
733 void op_pushl_ss32_T0(void)
737 stl(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
738 /* modify ESP after to handle exceptions correctly */
742 void op_pushw_ss32_T0(void)
746 stw(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
747 /* modify ESP after to handle exceptions correctly */
751 void op_pushl_ss16_T0(void)
754 offset
= (ESP
- 4) & 0xffff;
755 stl(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
756 /* modify ESP after to handle exceptions correctly */
757 ESP
= (ESP
& ~0xffff) | offset
;
760 void op_pushw_ss16_T0(void)
763 offset
= (ESP
- 2) & 0xffff;
764 stw(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
765 /* modify ESP after to handle exceptions correctly */
766 ESP
= (ESP
& ~0xffff) | offset
;
769 /* NOTE: ESP update is done after */
770 void op_popl_T0(void)
772 T0
= ldl((void *)ESP
);
775 void op_popw_T0(void)
777 T0
= lduw((void *)ESP
);
780 void op_popl_ss32_T0(void)
782 T0
= ldl(env
->seg_cache
[R_SS
].base
+ ESP
);
785 void op_popw_ss32_T0(void)
787 T0
= lduw(env
->seg_cache
[R_SS
].base
+ ESP
);
790 void op_popl_ss16_T0(void)
792 T0
= ldl(env
->seg_cache
[R_SS
].base
+ (ESP
& 0xffff));
795 void op_popw_ss16_T0(void)
797 T0
= lduw(env
->seg_cache
[R_SS
].base
+ (ESP
& 0xffff));
800 void op_addl_ESP_4(void)
805 void op_addl_ESP_2(void)
810 void op_addw_ESP_4(void)
812 ESP
= (ESP
& ~0xffff) | ((ESP
+ 4) & 0xffff);
815 void op_addw_ESP_2(void)
817 ESP
= (ESP
& ~0xffff) | ((ESP
+ 2) & 0xffff);
820 void op_addl_ESP_im(void)
825 void op_addw_ESP_im(void)
827 ESP
= (ESP
& ~0xffff) | ((ESP
+ PARAM1
) & 0xffff);
835 void OPPROTO
op_rdtsc(void)
839 asm("rdtsc" : "=A" (val
));
841 /* better than nothing: the time increases */
848 /* We simulate a pre-MMX pentium as in valgrind */
849 #define CPUID_FP87 (1 << 0)
850 #define CPUID_VME (1 << 1)
851 #define CPUID_DE (1 << 2)
852 #define CPUID_PSE (1 << 3)
853 #define CPUID_TSC (1 << 4)
854 #define CPUID_MSR (1 << 5)
855 #define CPUID_PAE (1 << 6)
856 #define CPUID_MCE (1 << 7)
857 #define CPUID_CX8 (1 << 8)
858 #define CPUID_APIC (1 << 9)
859 #define CPUID_SEP (1 << 11) /* sysenter/sysexit */
860 #define CPUID_MTRR (1 << 12)
861 #define CPUID_PGE (1 << 13)
862 #define CPUID_MCA (1 << 14)
863 #define CPUID_CMOV (1 << 15)
865 #define CPUID_MMX (1 << 23)
866 #define CPUID_FXSR (1 << 24)
867 #define CPUID_SSE (1 << 25)
868 #define CPUID_SSE2 (1 << 26)
870 void helper_cpuid(void)
873 EAX
= 1; /* max EAX index supported */
882 EDX
= CPUID_FP87
| CPUID_VME
| CPUID_DE
| CPUID_PSE
|
883 CPUID_TSC
| CPUID_MSR
| CPUID_MCE
|
888 void OPPROTO
op_cpuid(void)
896 void OPPROTO
op_aam(void)
903 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
907 void OPPROTO
op_aad(void)
912 ah
= (EAX
>> 8) & 0xff;
913 al
= ((ah
* base
) + al
) & 0xff;
914 EAX
= (EAX
& ~0xffff) | al
;
918 void OPPROTO
op_aaa(void)
924 eflags
= cc_table
[CC_OP
].compute_all();
927 ah
= (EAX
>> 8) & 0xff;
929 icarry
= (al
> 0xf9);
930 if (((al
& 0x0f) > 9 ) || af
) {
931 al
= (al
+ 6) & 0x0f;
932 ah
= (ah
+ 1 + icarry
) & 0xff;
933 eflags
|= CC_C
| CC_A
;
935 eflags
&= ~(CC_C
| CC_A
);
938 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
942 void OPPROTO
op_aas(void)
948 eflags
= cc_table
[CC_OP
].compute_all();
951 ah
= (EAX
>> 8) & 0xff;
954 if (((al
& 0x0f) > 9 ) || af
) {
955 al
= (al
- 6) & 0x0f;
956 ah
= (ah
- 1 - icarry
) & 0xff;
957 eflags
|= CC_C
| CC_A
;
959 eflags
&= ~(CC_C
| CC_A
);
962 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
966 void OPPROTO
op_daa(void)
971 eflags
= cc_table
[CC_OP
].compute_all();
977 if (((al
& 0x0f) > 9 ) || af
) {
978 al
= (al
+ 6) & 0xff;
981 if ((al
> 0x9f) || cf
) {
982 al
= (al
+ 0x60) & 0xff;
985 EAX
= (EAX
& ~0xff) | al
;
986 /* well, speed is not an issue here, so we compute the flags by hand */
987 eflags
|= (al
== 0) << 6; /* zf */
988 eflags
|= parity_table
[al
]; /* pf */
989 eflags
|= (al
& 0x80); /* sf */
993 void OPPROTO
op_das(void)
998 eflags
= cc_table
[CC_OP
].compute_all();
1005 if (((al
& 0x0f) > 9 ) || af
) {
1009 al
= (al
- 6) & 0xff;
1011 if ((al1
> 0x99) || cf
) {
1012 al
= (al
- 0x60) & 0xff;
1015 EAX
= (EAX
& ~0xff) | al
;
1016 /* well, speed is not an issue here, so we compute the flags by hand */
1017 eflags
|= (al
== 0) << 6; /* zf */
1018 eflags
|= parity_table
[al
]; /* pf */
1019 eflags
|= (al
& 0x80); /* sf */
1023 /* segment handling */
1025 /* XXX: use static VM86 information */
1026 void load_seg(int seg_reg
, int selector
)
1029 SegmentDescriptorTable
*dt
;
1034 env
->segs
[seg_reg
] = selector
;
1035 sc
= &env
->seg_cache
[seg_reg
];
1036 if (env
->eflags
& VM_MASK
) {
1037 sc
->base
= (void *)(selector
<< 4);
1045 index
= selector
& ~7;
1046 if ((index
+ 7) > dt
->limit
)
1047 raise_exception(EXCP0D_GPF
);
1048 ptr
= dt
->base
+ index
;
1051 sc
->base
= (void *)((e1
>> 16) | ((e2
& 0xff) << 16) | (e2
& 0xff000000));
1052 sc
->limit
= (e1
& 0xffff) | (e2
& 0x000f0000);
1054 sc
->limit
= (sc
->limit
<< 12) | 0xfff;
1055 sc
->seg_32bit
= (e2
>> 22) & 1;
1057 fprintf(logfile
, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
1058 selector
, (unsigned long)sc
->base
, sc
->limit
, sc
->seg_32bit
);
1063 void OPPROTO
op_movl_seg_T0(void)
1065 load_seg(PARAM1
, T0
& 0xffff);
1068 void OPPROTO
op_movl_T0_seg(void)
1070 T0
= env
->segs
[PARAM1
];
1073 void OPPROTO
op_movl_A0_seg(void)
1075 A0
= *(unsigned long *)((char *)env
+ PARAM1
);
1078 void OPPROTO
op_addl_A0_seg(void)
1080 A0
+= *(unsigned long *)((char *)env
+ PARAM1
);
1083 /* flags handling */
1085 /* slow jumps cases (compute x86 flags) */
1086 void OPPROTO
op_jo_cc(void)
1089 eflags
= cc_table
[CC_OP
].compute_all();
1097 void OPPROTO
op_jb_cc(void)
1099 if (cc_table
[CC_OP
].compute_c())
1106 void OPPROTO
op_jz_cc(void)
1109 eflags
= cc_table
[CC_OP
].compute_all();
1117 void OPPROTO
op_jbe_cc(void)
1120 eflags
= cc_table
[CC_OP
].compute_all();
1121 if (eflags
& (CC_Z
| CC_C
))
1128 void OPPROTO
op_js_cc(void)
1131 eflags
= cc_table
[CC_OP
].compute_all();
1139 void OPPROTO
op_jp_cc(void)
1142 eflags
= cc_table
[CC_OP
].compute_all();
1150 void OPPROTO
op_jl_cc(void)
1153 eflags
= cc_table
[CC_OP
].compute_all();
1154 if ((eflags
^ (eflags
>> 4)) & 0x80)
1161 void OPPROTO
op_jle_cc(void)
1164 eflags
= cc_table
[CC_OP
].compute_all();
1165 if (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
))
1172 /* slow set cases (compute x86 flags) */
1173 void OPPROTO
op_seto_T0_cc(void)
1176 eflags
= cc_table
[CC_OP
].compute_all();
1177 T0
= (eflags
>> 11) & 1;
1180 void OPPROTO
op_setb_T0_cc(void)
1182 T0
= cc_table
[CC_OP
].compute_c();
1185 void OPPROTO
op_setz_T0_cc(void)
1188 eflags
= cc_table
[CC_OP
].compute_all();
1189 T0
= (eflags
>> 6) & 1;
1192 void OPPROTO
op_setbe_T0_cc(void)
1195 eflags
= cc_table
[CC_OP
].compute_all();
1196 T0
= (eflags
& (CC_Z
| CC_C
)) != 0;
1199 void OPPROTO
op_sets_T0_cc(void)
1202 eflags
= cc_table
[CC_OP
].compute_all();
1203 T0
= (eflags
>> 7) & 1;
1206 void OPPROTO
op_setp_T0_cc(void)
1209 eflags
= cc_table
[CC_OP
].compute_all();
1210 T0
= (eflags
>> 2) & 1;
1213 void OPPROTO
op_setl_T0_cc(void)
1216 eflags
= cc_table
[CC_OP
].compute_all();
1217 T0
= ((eflags
^ (eflags
>> 4)) >> 7) & 1;
1220 void OPPROTO
op_setle_T0_cc(void)
1223 eflags
= cc_table
[CC_OP
].compute_all();
1224 T0
= (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
)) != 0;
1227 void OPPROTO
op_xor_T0_1(void)
1232 void OPPROTO
op_set_cc_op(void)
1237 #define FL_UPDATE_MASK (TF_MASK | AC_MASK | ID_MASK)
1239 void OPPROTO
op_movl_eflags_T0(void)
1243 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1244 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1245 /* we also update some system flags as in user mode */
1246 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK
) | (eflags
& FL_UPDATE_MASK
);
1249 /* XXX: compute only O flag */
1250 void OPPROTO
op_movb_eflags_T0(void)
1253 of
= cc_table
[CC_OP
].compute_all() & CC_O
;
1254 CC_SRC
= (T0
& (CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
)) | of
;
1257 void OPPROTO
op_movl_T0_eflags(void)
1260 eflags
= cc_table
[CC_OP
].compute_all();
1261 eflags
|= (DF
& DF_MASK
);
1262 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
);
1266 void OPPROTO
op_cld(void)
1271 void OPPROTO
op_std(void)
1276 void OPPROTO
op_clc(void)
1279 eflags
= cc_table
[CC_OP
].compute_all();
1284 void OPPROTO
op_stc(void)
1287 eflags
= cc_table
[CC_OP
].compute_all();
1292 void OPPROTO
op_cmc(void)
1295 eflags
= cc_table
[CC_OP
].compute_all();
1300 void OPPROTO
op_salc(void)
1303 cf
= cc_table
[CC_OP
].compute_c();
1304 EAX
= (EAX
& ~0xff) | ((-cf
) & 0xff);
1307 static int compute_all_eflags(void)
1312 static int compute_c_eflags(void)
1314 return CC_SRC
& CC_C
;
1317 static int compute_c_mul(void)
1324 static int compute_all_mul(void)
1326 int cf
, pf
, af
, zf
, sf
, of
;
1328 pf
= 0; /* undefined */
1329 af
= 0; /* undefined */
1330 zf
= 0; /* undefined */
1331 sf
= 0; /* undefined */
1333 return cf
| pf
| af
| zf
| sf
| of
;
1336 CCTable cc_table
[CC_OP_NB
] = {
1337 [CC_OP_DYNAMIC
] = { /* should never happen */ },
1339 [CC_OP_EFLAGS
] = { compute_all_eflags
, compute_c_eflags
},
1341 [CC_OP_MUL
] = { compute_all_mul
, compute_c_mul
},
1343 [CC_OP_ADDB
] = { compute_all_addb
, compute_c_addb
},
1344 [CC_OP_ADDW
] = { compute_all_addw
, compute_c_addw
},
1345 [CC_OP_ADDL
] = { compute_all_addl
, compute_c_addl
},
1347 [CC_OP_ADCB
] = { compute_all_adcb
, compute_c_adcb
},
1348 [CC_OP_ADCW
] = { compute_all_adcw
, compute_c_adcw
},
1349 [CC_OP_ADCL
] = { compute_all_adcl
, compute_c_adcl
},
1351 [CC_OP_SUBB
] = { compute_all_subb
, compute_c_subb
},
1352 [CC_OP_SUBW
] = { compute_all_subw
, compute_c_subw
},
1353 [CC_OP_SUBL
] = { compute_all_subl
, compute_c_subl
},
1355 [CC_OP_SBBB
] = { compute_all_sbbb
, compute_c_sbbb
},
1356 [CC_OP_SBBW
] = { compute_all_sbbw
, compute_c_sbbw
},
1357 [CC_OP_SBBL
] = { compute_all_sbbl
, compute_c_sbbl
},
1359 [CC_OP_LOGICB
] = { compute_all_logicb
, compute_c_logicb
},
1360 [CC_OP_LOGICW
] = { compute_all_logicw
, compute_c_logicw
},
1361 [CC_OP_LOGICL
] = { compute_all_logicl
, compute_c_logicl
},
1363 [CC_OP_INCB
] = { compute_all_incb
, compute_c_incl
},
1364 [CC_OP_INCW
] = { compute_all_incw
, compute_c_incl
},
1365 [CC_OP_INCL
] = { compute_all_incl
, compute_c_incl
},
1367 [CC_OP_DECB
] = { compute_all_decb
, compute_c_incl
},
1368 [CC_OP_DECW
] = { compute_all_decw
, compute_c_incl
},
1369 [CC_OP_DECL
] = { compute_all_decl
, compute_c_incl
},
1371 [CC_OP_SHLB
] = { compute_all_shlb
, compute_c_shll
},
1372 [CC_OP_SHLW
] = { compute_all_shlw
, compute_c_shll
},
1373 [CC_OP_SHLL
] = { compute_all_shll
, compute_c_shll
},
1375 [CC_OP_SARB
] = { compute_all_sarb
, compute_c_shll
},
1376 [CC_OP_SARW
] = { compute_all_sarw
, compute_c_shll
},
1377 [CC_OP_SARL
] = { compute_all_sarl
, compute_c_shll
},
1380 /* floating point support */
1382 #ifdef USE_X86LDOUBLE
1383 /* use long double functions */
1384 #define lrint lrintl
1385 #define llrint llrintl
1393 #define atan2 atan2l
1394 #define floor floorl
1399 extern int lrint(CPU86_LDouble x
);
1400 extern int64_t llrint(CPU86_LDouble x
);
1401 extern CPU86_LDouble
fabs(CPU86_LDouble x
);
1402 extern CPU86_LDouble
sin(CPU86_LDouble x
);
1403 extern CPU86_LDouble
cos(CPU86_LDouble x
);
1404 extern CPU86_LDouble
sqrt(CPU86_LDouble x
);
1405 extern CPU86_LDouble
pow(CPU86_LDouble
, CPU86_LDouble
);
1406 extern CPU86_LDouble
log(CPU86_LDouble x
);
1407 extern CPU86_LDouble
tan(CPU86_LDouble x
);
1408 extern CPU86_LDouble
atan2(CPU86_LDouble
, CPU86_LDouble
);
1409 extern CPU86_LDouble
floor(CPU86_LDouble x
);
1410 extern CPU86_LDouble
ceil(CPU86_LDouble x
);
1411 extern CPU86_LDouble
rint(CPU86_LDouble x
);
1413 #define RC_MASK 0xc00
1414 #define RC_NEAR 0x000
1415 #define RC_DOWN 0x400
1417 #define RC_CHOP 0xc00
1419 #define MAXTAN 9223372036854775808.0
1421 #ifdef USE_X86LDOUBLE
1427 unsigned long long lower
;
1428 unsigned short upper
;
1432 /* the following deal with x86 long double-precision numbers */
1433 #define MAXEXPD 0x7fff
1434 #define EXPBIAS 16383
1435 #define EXPD(fp) (fp.l.upper & 0x7fff)
1436 #define SIGND(fp) ((fp.l.upper) & 0x8000)
1437 #define MANTD(fp) (fp.l.lower)
1438 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
1444 #ifndef WORDS_BIGENDIAN
1446 unsigned long lower
;
1452 unsigned long lower
;
1458 /* the following deal with IEEE double-precision numbers */
1459 #define MAXEXPD 0x7ff
1460 #define EXPBIAS 1023
1461 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
1462 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
1463 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
1464 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
1469 void OPPROTO
op_flds_FT0_A0(void)
1471 FT0
= ldfl((void *)A0
);
1474 void OPPROTO
op_fldl_FT0_A0(void)
1476 FT0
= ldfq((void *)A0
);
1479 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1480 #ifdef USE_INT_TO_FLOAT_HELPERS
1482 void helper_fild_FT0_A0(void)
1484 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1487 void helper_fildl_FT0_A0(void)
1489 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1492 void helper_fildll_FT0_A0(void)
1494 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1497 void OPPROTO
op_fild_FT0_A0(void)
1499 helper_fild_FT0_A0();
1502 void OPPROTO
op_fildl_FT0_A0(void)
1504 helper_fildl_FT0_A0();
1507 void OPPROTO
op_fildll_FT0_A0(void)
1509 helper_fildll_FT0_A0();
1514 void OPPROTO
op_fild_FT0_A0(void)
1516 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1519 void OPPROTO
op_fildl_FT0_A0(void)
1521 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1524 void OPPROTO
op_fildll_FT0_A0(void)
1526 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1532 void OPPROTO
op_flds_ST0_A0(void)
1534 ST0
= ldfl((void *)A0
);
1537 void OPPROTO
op_fldl_ST0_A0(void)
1539 ST0
= ldfq((void *)A0
);
1542 #ifdef USE_X86LDOUBLE
1543 void OPPROTO
op_fldt_ST0_A0(void)
1545 ST0
= *(long double *)A0
;
1548 void helper_fldt_ST0_A0(void)
1550 CPU86_LDoubleU temp
;
1553 upper
= lduw((uint8_t *)A0
+ 8);
1554 /* XXX: handle overflow ? */
1555 e
= (upper
& 0x7fff) - 16383 + EXPBIAS
; /* exponent */
1556 e
|= (upper
>> 4) & 0x800; /* sign */
1557 temp
.ll
= ((ldq((void *)A0
) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e
<< 52);
1561 void OPPROTO
op_fldt_ST0_A0(void)
1563 helper_fldt_ST0_A0();
1567 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1568 #ifdef USE_INT_TO_FLOAT_HELPERS
1570 void helper_fild_ST0_A0(void)
1572 ST0
= (CPU86_LDouble
)ldsw((void *)A0
);
1575 void helper_fildl_ST0_A0(void)
1577 ST0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1580 void helper_fildll_ST0_A0(void)
1582 ST0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1585 void OPPROTO
op_fild_ST0_A0(void)
1587 helper_fild_ST0_A0();
1590 void OPPROTO
op_fildl_ST0_A0(void)
1592 helper_fildl_ST0_A0();
1595 void OPPROTO
op_fildll_ST0_A0(void)
1597 helper_fildll_ST0_A0();
1602 void OPPROTO
op_fild_ST0_A0(void)
1604 ST0
= (CPU86_LDouble
)ldsw((void *)A0
);
1607 void OPPROTO
op_fildl_ST0_A0(void)
1609 ST0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1612 void OPPROTO
op_fildll_ST0_A0(void)
1614 ST0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1621 void OPPROTO
op_fsts_ST0_A0(void)
1623 stfl((void *)A0
, (float)ST0
);
1626 void OPPROTO
op_fstl_ST0_A0(void)
1628 stfq((void *)A0
, (double)ST0
);
1631 #ifdef USE_X86LDOUBLE
1632 void OPPROTO
op_fstt_ST0_A0(void)
1634 *(long double *)A0
= ST0
;
1637 void helper_fstt_ST0_A0(void)
1639 CPU86_LDoubleU temp
;
1643 stq((void *)A0
, (MANTD(temp
) << 11) | (1LL << 63));
1644 /* exponent + sign */
1645 e
= EXPD(temp
) - EXPBIAS
+ 16383;
1646 e
|= SIGND(temp
) >> 16;
1647 stw((uint8_t *)A0
+ 8, e
);
1650 void OPPROTO
op_fstt_ST0_A0(void)
1652 helper_fstt_ST0_A0();
1656 void OPPROTO
op_fist_ST0_A0(void)
1660 stw((void *)A0
, val
);
1663 void OPPROTO
op_fistl_ST0_A0(void)
1667 stl((void *)A0
, val
);
1670 void OPPROTO
op_fistll_ST0_A0(void)
1674 stq((void *)A0
, val
);
1679 #define MUL10(iv) ( iv + iv + (iv << 3) )
1681 void helper_fbld_ST0_A0(void)
1684 CPU86_LDouble fpsrcop
;
1688 /* in this code, seg/m32i will be used as temporary ptr/int */
1689 seg
= (uint8_t *)A0
+ 8;
1691 /* XXX: raise exception */
1695 /* XXX: raise exception */
1696 if ((v
& 0xf0) != 0)
1698 m32i
= v
; /* <-- d14 */
1700 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d13 */
1701 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d12 */
1703 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d11 */
1704 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d10 */
1706 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d9 */
1707 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d8 */
1708 fpsrcop
= ((CPU86_LDouble
)m32i
) * 100000000.0;
1711 m32i
= (v
>> 4); /* <-- d7 */
1712 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d6 */
1714 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d5 */
1715 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d4 */
1717 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d3 */
1718 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d2 */
1720 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d1 */
1721 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d0 */
1722 fpsrcop
+= ((CPU86_LDouble
)m32i
);
1723 if ( ldub(seg
+9) & 0x80 )
1728 void OPPROTO
op_fbld_ST0_A0(void)
1730 helper_fbld_ST0_A0();
1733 void helper_fbst_ST0_A0(void)
1735 CPU86_LDouble fptemp
;
1736 CPU86_LDouble fpsrcop
;
1738 uint8_t *mem_ref
, *mem_end
;
1740 fpsrcop
= rint(ST0
);
1741 mem_ref
= (uint8_t *)A0
;
1742 mem_end
= mem_ref
+ 8;
1743 if ( fpsrcop
< 0.0 ) {
1744 stw(mem_end
, 0x8000);
1747 stw(mem_end
, 0x0000);
1749 while (mem_ref
< mem_end
) {
1752 fptemp
= floor(fpsrcop
/10.0);
1753 v
= ((int)(fpsrcop
- fptemp
*10.0));
1754 if (fptemp
== 0.0) {
1759 fptemp
= floor(fpsrcop
/10.0);
1760 v
|= (((int)(fpsrcop
- fptemp
*10.0)) << 4);
1764 while (mem_ref
< mem_end
) {
1769 void OPPROTO
op_fbst_ST0_A0(void)
1771 helper_fbst_ST0_A0();
1776 static inline void fpush(void)
1778 env
->fpstt
= (env
->fpstt
- 1) & 7;
1779 env
->fptags
[env
->fpstt
] = 0; /* validate stack entry */
1782 static inline void fpop(void)
1784 env
->fptags
[env
->fpstt
] = 1; /* invvalidate stack entry */
1785 env
->fpstt
= (env
->fpstt
+ 1) & 7;
1788 void OPPROTO
op_fpush(void)
1793 void OPPROTO
op_fpop(void)
1798 void OPPROTO
op_fdecstp(void)
1800 env
->fpstt
= (env
->fpstt
- 1) & 7;
1801 env
->fpus
&= (~0x4700);
1804 void OPPROTO
op_fincstp(void)
1806 env
->fpstt
= (env
->fpstt
+ 1) & 7;
1807 env
->fpus
&= (~0x4700);
1810 void OPPROTO
op_fmov_ST0_FT0(void)
1815 void OPPROTO
op_fmov_FT0_STN(void)
1820 void OPPROTO
op_fmov_ST0_STN(void)
1825 void OPPROTO
op_fmov_STN_ST0(void)
1830 void OPPROTO
op_fxchg_ST0_STN(void)
1838 /* FPU operations */
1840 /* XXX: handle nans */
1841 void OPPROTO
op_fcom_ST0_FT0(void)
1843 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1845 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1846 else if (ST0
== FT0
)
1847 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1851 /* XXX: handle nans */
1852 void OPPROTO
op_fucom_ST0_FT0(void)
1854 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
1856 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
1857 else if (ST0
== FT0
)
1858 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
1862 void OPPROTO
op_fadd_ST0_FT0(void)
1867 void OPPROTO
op_fmul_ST0_FT0(void)
1872 void OPPROTO
op_fsub_ST0_FT0(void)
1877 void OPPROTO
op_fsubr_ST0_FT0(void)
1882 void OPPROTO
op_fdiv_ST0_FT0(void)
1887 void OPPROTO
op_fdivr_ST0_FT0(void)
1892 /* fp operations between STN and ST0 */
1894 void OPPROTO
op_fadd_STN_ST0(void)
1899 void OPPROTO
op_fmul_STN_ST0(void)
1904 void OPPROTO
op_fsub_STN_ST0(void)
1909 void OPPROTO
op_fsubr_STN_ST0(void)
1916 void OPPROTO
op_fdiv_STN_ST0(void)
1921 void OPPROTO
op_fdivr_STN_ST0(void)
1928 /* misc FPU operations */
1929 void OPPROTO
op_fchs_ST0(void)
1934 void OPPROTO
op_fabs_ST0(void)
1939 void helper_fxam_ST0(void)
1941 CPU86_LDoubleU temp
;
1946 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
1948 env
->fpus
|= 0x200; /* C1 <-- 1 */
1950 expdif
= EXPD(temp
);
1951 if (expdif
== MAXEXPD
) {
1952 if (MANTD(temp
) == 0)
1953 env
->fpus
|= 0x500 /*Infinity*/;
1955 env
->fpus
|= 0x100 /*NaN*/;
1956 } else if (expdif
== 0) {
1957 if (MANTD(temp
) == 0)
1958 env
->fpus
|= 0x4000 /*Zero*/;
1960 env
->fpus
|= 0x4400 /*Denormal*/;
1966 void OPPROTO
op_fxam_ST0(void)
1971 void OPPROTO
op_fld1_ST0(void)
1973 ST0
= *(CPU86_LDouble
*)&f15rk
[1];
1976 void OPPROTO
op_fldl2t_ST0(void)
1978 ST0
= *(CPU86_LDouble
*)&f15rk
[6];
1981 void OPPROTO
op_fldl2e_ST0(void)
1983 ST0
= *(CPU86_LDouble
*)&f15rk
[5];
1986 void OPPROTO
op_fldpi_ST0(void)
1988 ST0
= *(CPU86_LDouble
*)&f15rk
[2];
1991 void OPPROTO
op_fldlg2_ST0(void)
1993 ST0
= *(CPU86_LDouble
*)&f15rk
[3];
1996 void OPPROTO
op_fldln2_ST0(void)
1998 ST0
= *(CPU86_LDouble
*)&f15rk
[4];
2001 void OPPROTO
op_fldz_ST0(void)
2003 ST0
= *(CPU86_LDouble
*)&f15rk
[0];
2006 void OPPROTO
op_fldz_FT0(void)
2008 ST0
= *(CPU86_LDouble
*)&f15rk
[0];
2011 void helper_f2xm1(void)
2013 ST0
= pow(2.0,ST0
) - 1.0;
2016 void helper_fyl2x(void)
2018 CPU86_LDouble fptemp
;
2022 fptemp
= log(fptemp
)/log(2.0); /* log2(ST) */
2026 env
->fpus
&= (~0x4700);
2031 void helper_fptan(void)
2033 CPU86_LDouble fptemp
;
2036 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2042 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2043 /* the above code is for |arg| < 2**52 only */
2047 void helper_fpatan(void)
2049 CPU86_LDouble fptemp
, fpsrcop
;
2053 ST1
= atan2(fpsrcop
,fptemp
);
2057 void helper_fxtract(void)
2059 CPU86_LDoubleU temp
;
2060 unsigned int expdif
;
2063 expdif
= EXPD(temp
) - EXPBIAS
;
2064 /*DP exponent bias*/
2071 void helper_fprem1(void)
2073 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2074 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2080 fpsrcop1
.d
= fpsrcop
;
2082 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2084 dblq
= fpsrcop
/ fptemp
;
2085 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2086 ST0
= fpsrcop
- fptemp
*dblq
;
2087 q
= (int)dblq
; /* cutting off top bits is assumed here */
2088 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2089 /* (C0,C1,C3) <-- (q2,q1,q0) */
2090 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2091 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2092 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2094 env
->fpus
|= 0x400; /* C2 <-- 1 */
2095 fptemp
= pow(2.0, expdif
-50);
2096 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2097 /* fpsrcop = integer obtained by rounding to the nearest */
2098 fpsrcop
= (fpsrcop
-floor(fpsrcop
) < ceil(fpsrcop
)-fpsrcop
)?
2099 floor(fpsrcop
): ceil(fpsrcop
);
2100 ST0
-= (ST1
* fpsrcop
* fptemp
);
2104 void helper_fprem(void)
2106 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2107 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2113 fpsrcop1
.d
= fpsrcop
;
2115 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2116 if ( expdif
< 53 ) {
2117 dblq
= fpsrcop
/ fptemp
;
2118 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2119 ST0
= fpsrcop
- fptemp
*dblq
;
2120 q
= (int)dblq
; /* cutting off top bits is assumed here */
2121 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2122 /* (C0,C1,C3) <-- (q2,q1,q0) */
2123 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2124 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2125 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2127 env
->fpus
|= 0x400; /* C2 <-- 1 */
2128 fptemp
= pow(2.0, expdif
-50);
2129 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2130 /* fpsrcop = integer obtained by chopping */
2131 fpsrcop
= (fpsrcop
< 0.0)?
2132 -(floor(fabs(fpsrcop
))): floor(fpsrcop
);
2133 ST0
-= (ST1
* fpsrcop
* fptemp
);
2137 void helper_fyl2xp1(void)
2139 CPU86_LDouble fptemp
;
2142 if ((fptemp
+1.0)>0.0) {
2143 fptemp
= log(fptemp
+1.0) / log(2.0); /* log2(ST+1.0) */
2147 env
->fpus
&= (~0x4700);
2152 void helper_fsqrt(void)
2154 CPU86_LDouble fptemp
;
2158 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2164 void helper_fsincos(void)
2166 CPU86_LDouble fptemp
;
2169 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2175 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2176 /* the above code is for |arg| < 2**63 only */
2180 void helper_frndint(void)
2185 void helper_fscale(void)
2187 CPU86_LDouble fpsrcop
, fptemp
;
2190 fptemp
= pow(fpsrcop
,ST1
);
2194 void helper_fsin(void)
2196 CPU86_LDouble fptemp
;
2199 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2203 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2204 /* the above code is for |arg| < 2**53 only */
2208 void helper_fcos(void)
2210 CPU86_LDouble fptemp
;
2213 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2217 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2218 /* the above code is for |arg5 < 2**63 only */
2222 /* associated heplers to reduce generated code length and to simplify
2223 relocation (FP constants are usually stored in .rodata section) */
2225 void OPPROTO
op_f2xm1(void)
2230 void OPPROTO
op_fyl2x(void)
2235 void OPPROTO
op_fptan(void)
2240 void OPPROTO
op_fpatan(void)
2245 void OPPROTO
op_fxtract(void)
2250 void OPPROTO
op_fprem1(void)
2256 void OPPROTO
op_fprem(void)
2261 void OPPROTO
op_fyl2xp1(void)
2266 void OPPROTO
op_fsqrt(void)
2271 void OPPROTO
op_fsincos(void)
2276 void OPPROTO
op_frndint(void)
2281 void OPPROTO
op_fscale(void)
2286 void OPPROTO
op_fsin(void)
2291 void OPPROTO
op_fcos(void)
2296 void OPPROTO
op_fnstsw_A0(void)
2299 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2300 stw((void *)A0
, fpus
);
2303 void OPPROTO
op_fnstsw_EAX(void)
2306 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2307 EAX
= (EAX
& 0xffff0000) | fpus
;
2310 void OPPROTO
op_fnstcw_A0(void)
2312 stw((void *)A0
, env
->fpuc
);
2315 void OPPROTO
op_fldcw_A0(void)
2318 env
->fpuc
= lduw((void *)A0
);
2319 /* set rounding mode */
2320 switch(env
->fpuc
& RC_MASK
) {
2323 rnd_type
= FE_TONEAREST
;
2326 rnd_type
= FE_DOWNWARD
;
2329 rnd_type
= FE_UPWARD
;
2332 rnd_type
= FE_TOWARDZERO
;
2335 fesetround(rnd_type
);
2338 void OPPROTO
op_fclex(void)
2340 env
->fpus
&= 0x7f00;
2343 void OPPROTO
op_fninit(void)
2358 /* threading support */
2359 void OPPROTO
op_lock(void)
2364 void OPPROTO
op_unlock(void)