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git.proxmox.com Git - mirror_qemu.git/blob - op-i386.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
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 #ifdef BUGGY_GCC_DIV64
416 /* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
417 call it from another function */
418 uint32_t div64(uint32_t *q_ptr
, uint64_t num
, uint32_t den
)
424 int32_t idiv64(int32_t *q_ptr
, int64_t num
, int32_t den
)
431 void OPPROTO
op_divl_EAX_T0(void)
433 unsigned int den
, q
, r
;
436 num
= EAX
| ((uint64_t)EDX
<< 32);
439 raise_exception(EXCP00_DIVZ
);
440 #ifdef BUGGY_GCC_DIV64
441 r
= div64(&q
, num
, den
);
450 void OPPROTO
op_idivl_EAX_T0(void)
455 num
= EAX
| ((uint64_t)EDX
<< 32);
458 raise_exception(EXCP00_DIVZ
);
459 #ifdef BUGGY_GCC_DIV64
460 r
= idiv64(&q
, num
, den
);
469 /* constant load & misc op */
471 void OPPROTO
op_movl_T0_im(void)
476 void OPPROTO
op_addl_T0_im(void)
481 void OPPROTO
op_andl_T0_ffff(void)
486 void OPPROTO
op_movl_T0_T1(void)
491 void OPPROTO
op_movl_T1_im(void)
496 void OPPROTO
op_addl_T1_im(void)
501 void OPPROTO
op_movl_T1_A0(void)
506 void OPPROTO
op_movl_A0_im(void)
511 void OPPROTO
op_addl_A0_im(void)
516 void OPPROTO
op_addl_A0_AL(void)
521 void OPPROTO
op_andl_A0_ffff(void)
528 void OPPROTO
op_ldub_T0_A0(void)
530 T0
= ldub((uint8_t *)A0
);
533 void OPPROTO
op_ldsb_T0_A0(void)
535 T0
= ldsb((int8_t *)A0
);
538 void OPPROTO
op_lduw_T0_A0(void)
540 T0
= lduw((uint8_t *)A0
);
543 void OPPROTO
op_ldsw_T0_A0(void)
545 T0
= ldsw((int8_t *)A0
);
548 void OPPROTO
op_ldl_T0_A0(void)
550 T0
= ldl((uint8_t *)A0
);
553 void OPPROTO
op_ldub_T1_A0(void)
555 T1
= ldub((uint8_t *)A0
);
558 void OPPROTO
op_ldsb_T1_A0(void)
560 T1
= ldsb((int8_t *)A0
);
563 void OPPROTO
op_lduw_T1_A0(void)
565 T1
= lduw((uint8_t *)A0
);
568 void OPPROTO
op_ldsw_T1_A0(void)
570 T1
= ldsw((int8_t *)A0
);
573 void OPPROTO
op_ldl_T1_A0(void)
575 T1
= ldl((uint8_t *)A0
);
578 void OPPROTO
op_stb_T0_A0(void)
580 stb((uint8_t *)A0
, T0
);
583 void OPPROTO
op_stw_T0_A0(void)
585 stw((uint8_t *)A0
, T0
);
588 void OPPROTO
op_stl_T0_A0(void)
590 stl((uint8_t *)A0
, T0
);
593 /* used for bit operations */
595 void OPPROTO
op_add_bitw_A0_T1(void)
597 A0
+= ((int32_t)T1
>> 4) << 1;
600 void OPPROTO
op_add_bitl_A0_T1(void)
602 A0
+= ((int32_t)T1
>> 5) << 2;
607 void OPPROTO
op_jmp_T0(void)
612 void OPPROTO
op_jmp_im(void)
617 void OPPROTO
op_int_im(void)
622 raise_exception_err(EXCP0D_GPF
, intno
* 8 + 2);
625 void OPPROTO
op_int3(void)
628 raise_exception(EXCP03_INT3
);
631 void OPPROTO
op_into(void)
634 eflags
= cc_table
[CC_OP
].compute_all();
636 raise_exception(EXCP04_INTO
);
641 void OPPROTO
op_gpf(void)
644 raise_exception(EXCP0D_GPF
);
647 void OPPROTO
op_cli(void)
649 env
->eflags
&= ~IF_MASK
;
652 void OPPROTO
op_sti(void)
654 env
->eflags
|= IF_MASK
;
657 /* vm86plus instructions */
659 void OPPROTO
op_cli_vm(void)
661 env
->eflags
&= ~VIF_MASK
;
664 void OPPROTO
op_sti_vm(void)
666 env
->eflags
|= VIF_MASK
;
667 if (env
->eflags
& VIP_MASK
) {
669 raise_exception(EXCP0D_GPF
);
674 void OPPROTO
op_boundw(void)
677 low
= ldsw((uint8_t *)A0
);
678 high
= ldsw((uint8_t *)A0
+ 2);
680 if (v
< low
|| v
> high
)
681 raise_exception(EXCP05_BOUND
);
685 void OPPROTO
op_boundl(void)
688 low
= ldl((uint8_t *)A0
);
689 high
= ldl((uint8_t *)A0
+ 4);
691 if (v
< low
|| v
> high
)
692 raise_exception(EXCP05_BOUND
);
696 void OPPROTO
op_cmpxchg8b(void)
701 eflags
= cc_table
[CC_OP
].compute_all();
702 d
= ldq((uint8_t *)A0
);
703 if (d
== (((uint64_t)EDX
<< 32) | EAX
)) {
704 stq((uint8_t *)A0
, ((uint64_t)ECX
<< 32) | EBX
);
720 #include "ops_template.h"
724 #include "ops_template.h"
728 #include "ops_template.h"
733 void OPPROTO
op_movsbl_T0_T0(void)
738 void OPPROTO
op_movzbl_T0_T0(void)
743 void OPPROTO
op_movswl_T0_T0(void)
748 void OPPROTO
op_movzwl_T0_T0(void)
753 void OPPROTO
op_movswl_EAX_AX(void)
758 void OPPROTO
op_movsbw_AX_AL(void)
760 EAX
= (EAX
& 0xffff0000) | ((int8_t)EAX
& 0xffff);
763 void OPPROTO
op_movslq_EDX_EAX(void)
765 EDX
= (int32_t)EAX
>> 31;
768 void OPPROTO
op_movswl_DX_AX(void)
770 EDX
= (EDX
& 0xffff0000) | (((int16_t)EAX
>> 15) & 0xffff);
775 void op_pushl_T0(void)
779 stl((void *)offset
, T0
);
780 /* modify ESP after to handle exceptions correctly */
784 void op_pushw_T0(void)
788 stw((void *)offset
, T0
);
789 /* modify ESP after to handle exceptions correctly */
793 void op_pushl_ss32_T0(void)
797 stl(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
798 /* modify ESP after to handle exceptions correctly */
802 void op_pushw_ss32_T0(void)
806 stw(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
807 /* modify ESP after to handle exceptions correctly */
811 void op_pushl_ss16_T0(void)
814 offset
= (ESP
- 4) & 0xffff;
815 stl(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
816 /* modify ESP after to handle exceptions correctly */
817 ESP
= (ESP
& ~0xffff) | offset
;
820 void op_pushw_ss16_T0(void)
823 offset
= (ESP
- 2) & 0xffff;
824 stw(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
825 /* modify ESP after to handle exceptions correctly */
826 ESP
= (ESP
& ~0xffff) | offset
;
829 /* NOTE: ESP update is done after */
830 void op_popl_T0(void)
832 T0
= ldl((void *)ESP
);
835 void op_popw_T0(void)
837 T0
= lduw((void *)ESP
);
840 void op_popl_ss32_T0(void)
842 T0
= ldl(env
->seg_cache
[R_SS
].base
+ ESP
);
845 void op_popw_ss32_T0(void)
847 T0
= lduw(env
->seg_cache
[R_SS
].base
+ ESP
);
850 void op_popl_ss16_T0(void)
852 T0
= ldl(env
->seg_cache
[R_SS
].base
+ (ESP
& 0xffff));
855 void op_popw_ss16_T0(void)
857 T0
= lduw(env
->seg_cache
[R_SS
].base
+ (ESP
& 0xffff));
860 void op_addl_ESP_4(void)
865 void op_addl_ESP_2(void)
870 void op_addw_ESP_4(void)
872 ESP
= (ESP
& ~0xffff) | ((ESP
+ 4) & 0xffff);
875 void op_addw_ESP_2(void)
877 ESP
= (ESP
& ~0xffff) | ((ESP
+ 2) & 0xffff);
880 void op_addl_ESP_im(void)
885 void op_addw_ESP_im(void)
887 ESP
= (ESP
& ~0xffff) | ((ESP
+ PARAM1
) & 0xffff);
895 void OPPROTO
op_rdtsc(void)
899 asm("rdtsc" : "=A" (val
));
901 /* better than nothing: the time increases */
908 /* We simulate a pre-MMX pentium as in valgrind */
909 #define CPUID_FP87 (1 << 0)
910 #define CPUID_VME (1 << 1)
911 #define CPUID_DE (1 << 2)
912 #define CPUID_PSE (1 << 3)
913 #define CPUID_TSC (1 << 4)
914 #define CPUID_MSR (1 << 5)
915 #define CPUID_PAE (1 << 6)
916 #define CPUID_MCE (1 << 7)
917 #define CPUID_CX8 (1 << 8)
918 #define CPUID_APIC (1 << 9)
919 #define CPUID_SEP (1 << 11) /* sysenter/sysexit */
920 #define CPUID_MTRR (1 << 12)
921 #define CPUID_PGE (1 << 13)
922 #define CPUID_MCA (1 << 14)
923 #define CPUID_CMOV (1 << 15)
925 #define CPUID_MMX (1 << 23)
926 #define CPUID_FXSR (1 << 24)
927 #define CPUID_SSE (1 << 25)
928 #define CPUID_SSE2 (1 << 26)
930 void helper_cpuid(void)
933 EAX
= 1; /* max EAX index supported */
942 EDX
= CPUID_FP87
| CPUID_VME
| CPUID_DE
| CPUID_PSE
|
943 CPUID_TSC
| CPUID_MSR
| CPUID_MCE
|
948 void OPPROTO
op_cpuid(void)
956 void OPPROTO
op_aam(void)
963 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
967 void OPPROTO
op_aad(void)
972 ah
= (EAX
>> 8) & 0xff;
973 al
= ((ah
* base
) + al
) & 0xff;
974 EAX
= (EAX
& ~0xffff) | al
;
978 void OPPROTO
op_aaa(void)
984 eflags
= cc_table
[CC_OP
].compute_all();
987 ah
= (EAX
>> 8) & 0xff;
989 icarry
= (al
> 0xf9);
990 if (((al
& 0x0f) > 9 ) || af
) {
991 al
= (al
+ 6) & 0x0f;
992 ah
= (ah
+ 1 + icarry
) & 0xff;
993 eflags
|= CC_C
| CC_A
;
995 eflags
&= ~(CC_C
| CC_A
);
998 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
1002 void OPPROTO
op_aas(void)
1008 eflags
= cc_table
[CC_OP
].compute_all();
1011 ah
= (EAX
>> 8) & 0xff;
1014 if (((al
& 0x0f) > 9 ) || af
) {
1015 al
= (al
- 6) & 0x0f;
1016 ah
= (ah
- 1 - icarry
) & 0xff;
1017 eflags
|= CC_C
| CC_A
;
1019 eflags
&= ~(CC_C
| CC_A
);
1022 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
1026 void OPPROTO
op_daa(void)
1031 eflags
= cc_table
[CC_OP
].compute_all();
1037 if (((al
& 0x0f) > 9 ) || af
) {
1038 al
= (al
+ 6) & 0xff;
1041 if ((al
> 0x9f) || cf
) {
1042 al
= (al
+ 0x60) & 0xff;
1045 EAX
= (EAX
& ~0xff) | al
;
1046 /* well, speed is not an issue here, so we compute the flags by hand */
1047 eflags
|= (al
== 0) << 6; /* zf */
1048 eflags
|= parity_table
[al
]; /* pf */
1049 eflags
|= (al
& 0x80); /* sf */
1053 void OPPROTO
op_das(void)
1055 int al
, al1
, af
, cf
;
1058 eflags
= cc_table
[CC_OP
].compute_all();
1065 if (((al
& 0x0f) > 9 ) || af
) {
1069 al
= (al
- 6) & 0xff;
1071 if ((al1
> 0x99) || cf
) {
1072 al
= (al
- 0x60) & 0xff;
1075 EAX
= (EAX
& ~0xff) | al
;
1076 /* well, speed is not an issue here, so we compute the flags by hand */
1077 eflags
|= (al
== 0) << 6; /* zf */
1078 eflags
|= parity_table
[al
]; /* pf */
1079 eflags
|= (al
& 0x80); /* sf */
1083 /* segment handling */
1085 /* XXX: use static VM86 information */
1086 void load_seg(int seg_reg
, int selector
)
1089 SegmentDescriptorTable
*dt
;
1094 env
->segs
[seg_reg
] = selector
;
1095 sc
= &env
->seg_cache
[seg_reg
];
1096 if (env
->eflags
& VM_MASK
) {
1097 sc
->base
= (void *)(selector
<< 4);
1105 index
= selector
& ~7;
1106 if ((index
+ 7) > dt
->limit
)
1107 raise_exception_err(EXCP0D_GPF
, selector
);
1108 ptr
= dt
->base
+ index
;
1111 sc
->base
= (void *)((e1
>> 16) | ((e2
& 0xff) << 16) | (e2
& 0xff000000));
1112 sc
->limit
= (e1
& 0xffff) | (e2
& 0x000f0000);
1114 sc
->limit
= (sc
->limit
<< 12) | 0xfff;
1115 sc
->seg_32bit
= (e2
>> 22) & 1;
1117 fprintf(logfile
, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
1118 selector
, (unsigned long)sc
->base
, sc
->limit
, sc
->seg_32bit
);
1123 void OPPROTO
op_movl_seg_T0(void)
1125 load_seg(PARAM1
, T0
& 0xffff);
1128 void OPPROTO
op_movl_T0_seg(void)
1130 T0
= env
->segs
[PARAM1
];
1133 void OPPROTO
op_movl_A0_seg(void)
1135 A0
= *(unsigned long *)((char *)env
+ PARAM1
);
1138 void OPPROTO
op_addl_A0_seg(void)
1140 A0
+= *(unsigned long *)((char *)env
+ PARAM1
);
1143 /* flags handling */
1145 /* slow jumps cases (compute x86 flags) */
1146 void OPPROTO
op_jo_cc(void)
1149 eflags
= cc_table
[CC_OP
].compute_all();
1157 void OPPROTO
op_jb_cc(void)
1159 if (cc_table
[CC_OP
].compute_c())
1166 void OPPROTO
op_jz_cc(void)
1169 eflags
= cc_table
[CC_OP
].compute_all();
1177 void OPPROTO
op_jbe_cc(void)
1180 eflags
= cc_table
[CC_OP
].compute_all();
1181 if (eflags
& (CC_Z
| CC_C
))
1188 void OPPROTO
op_js_cc(void)
1191 eflags
= cc_table
[CC_OP
].compute_all();
1199 void OPPROTO
op_jp_cc(void)
1202 eflags
= cc_table
[CC_OP
].compute_all();
1210 void OPPROTO
op_jl_cc(void)
1213 eflags
= cc_table
[CC_OP
].compute_all();
1214 if ((eflags
^ (eflags
>> 4)) & 0x80)
1221 void OPPROTO
op_jle_cc(void)
1224 eflags
= cc_table
[CC_OP
].compute_all();
1225 if (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
))
1232 /* slow set cases (compute x86 flags) */
1233 void OPPROTO
op_seto_T0_cc(void)
1236 eflags
= cc_table
[CC_OP
].compute_all();
1237 T0
= (eflags
>> 11) & 1;
1240 void OPPROTO
op_setb_T0_cc(void)
1242 T0
= cc_table
[CC_OP
].compute_c();
1245 void OPPROTO
op_setz_T0_cc(void)
1248 eflags
= cc_table
[CC_OP
].compute_all();
1249 T0
= (eflags
>> 6) & 1;
1252 void OPPROTO
op_setbe_T0_cc(void)
1255 eflags
= cc_table
[CC_OP
].compute_all();
1256 T0
= (eflags
& (CC_Z
| CC_C
)) != 0;
1259 void OPPROTO
op_sets_T0_cc(void)
1262 eflags
= cc_table
[CC_OP
].compute_all();
1263 T0
= (eflags
>> 7) & 1;
1266 void OPPROTO
op_setp_T0_cc(void)
1269 eflags
= cc_table
[CC_OP
].compute_all();
1270 T0
= (eflags
>> 2) & 1;
1273 void OPPROTO
op_setl_T0_cc(void)
1276 eflags
= cc_table
[CC_OP
].compute_all();
1277 T0
= ((eflags
^ (eflags
>> 4)) >> 7) & 1;
1280 void OPPROTO
op_setle_T0_cc(void)
1283 eflags
= cc_table
[CC_OP
].compute_all();
1284 T0
= (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
)) != 0;
1287 void OPPROTO
op_xor_T0_1(void)
1292 void OPPROTO
op_set_cc_op(void)
1297 #define FL_UPDATE_MASK32 (TF_MASK | AC_MASK | ID_MASK)
1298 #define FL_UPDATE_MASK16 (TF_MASK)
1300 void OPPROTO
op_movl_eflags_T0(void)
1304 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1305 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1306 /* we also update some system flags as in user mode */
1307 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK32
) | (eflags
& FL_UPDATE_MASK32
);
1310 void OPPROTO
op_movw_eflags_T0(void)
1314 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1315 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1316 /* we also update some system flags as in user mode */
1317 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK16
) | (eflags
& FL_UPDATE_MASK16
);
1321 void OPPROTO
op_movw_eflags_T0_vm(void)
1325 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1326 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1327 /* we also update some system flags as in user mode */
1328 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK16
| VIF_MASK
)) |
1329 (eflags
& FL_UPDATE_MASK16
);
1330 if (eflags
& IF_MASK
) {
1331 env
->eflags
|= VIF_MASK
;
1332 if (env
->eflags
& VIP_MASK
) {
1334 raise_exception(EXCP0D_GPF
);
1340 void OPPROTO
op_movl_eflags_T0_vm(void)
1344 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1345 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1346 /* we also update some system flags as in user mode */
1347 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK32
| VIF_MASK
)) |
1348 (eflags
& FL_UPDATE_MASK32
);
1349 if (eflags
& IF_MASK
) {
1350 env
->eflags
|= VIF_MASK
;
1351 if (env
->eflags
& VIP_MASK
) {
1353 raise_exception(EXCP0D_GPF
);
1359 /* XXX: compute only O flag */
1360 void OPPROTO
op_movb_eflags_T0(void)
1363 of
= cc_table
[CC_OP
].compute_all() & CC_O
;
1364 CC_SRC
= (T0
& (CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
)) | of
;
1367 void OPPROTO
op_movl_T0_eflags(void)
1370 eflags
= cc_table
[CC_OP
].compute_all();
1371 eflags
|= (DF
& DF_MASK
);
1372 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
);
1377 void OPPROTO
op_movl_T0_eflags_vm(void)
1380 eflags
= cc_table
[CC_OP
].compute_all();
1381 eflags
|= (DF
& DF_MASK
);
1382 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
| IF_MASK
);
1383 if (env
->eflags
& VIF_MASK
)
1388 void OPPROTO
op_cld(void)
1393 void OPPROTO
op_std(void)
1398 void OPPROTO
op_clc(void)
1401 eflags
= cc_table
[CC_OP
].compute_all();
1406 void OPPROTO
op_stc(void)
1409 eflags
= cc_table
[CC_OP
].compute_all();
1414 void OPPROTO
op_cmc(void)
1417 eflags
= cc_table
[CC_OP
].compute_all();
1422 void OPPROTO
op_salc(void)
1425 cf
= cc_table
[CC_OP
].compute_c();
1426 EAX
= (EAX
& ~0xff) | ((-cf
) & 0xff);
1429 static int compute_all_eflags(void)
1434 static int compute_c_eflags(void)
1436 return CC_SRC
& CC_C
;
1439 static int compute_c_mul(void)
1446 static int compute_all_mul(void)
1448 int cf
, pf
, af
, zf
, sf
, of
;
1450 pf
= 0; /* undefined */
1451 af
= 0; /* undefined */
1452 zf
= 0; /* undefined */
1453 sf
= 0; /* undefined */
1455 return cf
| pf
| af
| zf
| sf
| of
;
1458 CCTable cc_table
[CC_OP_NB
] = {
1459 [CC_OP_DYNAMIC
] = { /* should never happen */ },
1461 [CC_OP_EFLAGS
] = { compute_all_eflags
, compute_c_eflags
},
1463 [CC_OP_MUL
] = { compute_all_mul
, compute_c_mul
},
1465 [CC_OP_ADDB
] = { compute_all_addb
, compute_c_addb
},
1466 [CC_OP_ADDW
] = { compute_all_addw
, compute_c_addw
},
1467 [CC_OP_ADDL
] = { compute_all_addl
, compute_c_addl
},
1469 [CC_OP_ADCB
] = { compute_all_adcb
, compute_c_adcb
},
1470 [CC_OP_ADCW
] = { compute_all_adcw
, compute_c_adcw
},
1471 [CC_OP_ADCL
] = { compute_all_adcl
, compute_c_adcl
},
1473 [CC_OP_SUBB
] = { compute_all_subb
, compute_c_subb
},
1474 [CC_OP_SUBW
] = { compute_all_subw
, compute_c_subw
},
1475 [CC_OP_SUBL
] = { compute_all_subl
, compute_c_subl
},
1477 [CC_OP_SBBB
] = { compute_all_sbbb
, compute_c_sbbb
},
1478 [CC_OP_SBBW
] = { compute_all_sbbw
, compute_c_sbbw
},
1479 [CC_OP_SBBL
] = { compute_all_sbbl
, compute_c_sbbl
},
1481 [CC_OP_LOGICB
] = { compute_all_logicb
, compute_c_logicb
},
1482 [CC_OP_LOGICW
] = { compute_all_logicw
, compute_c_logicw
},
1483 [CC_OP_LOGICL
] = { compute_all_logicl
, compute_c_logicl
},
1485 [CC_OP_INCB
] = { compute_all_incb
, compute_c_incl
},
1486 [CC_OP_INCW
] = { compute_all_incw
, compute_c_incl
},
1487 [CC_OP_INCL
] = { compute_all_incl
, compute_c_incl
},
1489 [CC_OP_DECB
] = { compute_all_decb
, compute_c_incl
},
1490 [CC_OP_DECW
] = { compute_all_decw
, compute_c_incl
},
1491 [CC_OP_DECL
] = { compute_all_decl
, compute_c_incl
},
1493 [CC_OP_SHLB
] = { compute_all_shlb
, compute_c_shll
},
1494 [CC_OP_SHLW
] = { compute_all_shlw
, compute_c_shll
},
1495 [CC_OP_SHLL
] = { compute_all_shll
, compute_c_shll
},
1497 [CC_OP_SARB
] = { compute_all_sarb
, compute_c_shll
},
1498 [CC_OP_SARW
] = { compute_all_sarw
, compute_c_shll
},
1499 [CC_OP_SARL
] = { compute_all_sarl
, compute_c_shll
},
1502 /* floating point support. Some of the code for complicated x87
1503 functions comes from the LGPL'ed x86 emulator found in the Willows
1504 TWIN windows emulator. */
1506 #ifdef USE_X86LDOUBLE
1507 /* use long double functions */
1508 #define lrint lrintl
1509 #define llrint llrintl
1517 #define atan2 atan2l
1518 #define floor floorl
1523 extern int lrint(CPU86_LDouble x
);
1524 extern int64_t llrint(CPU86_LDouble x
);
1525 extern CPU86_LDouble
fabs(CPU86_LDouble x
);
1526 extern CPU86_LDouble
sin(CPU86_LDouble x
);
1527 extern CPU86_LDouble
cos(CPU86_LDouble x
);
1528 extern CPU86_LDouble
sqrt(CPU86_LDouble x
);
1529 extern CPU86_LDouble
pow(CPU86_LDouble
, CPU86_LDouble
);
1530 extern CPU86_LDouble
log(CPU86_LDouble x
);
1531 extern CPU86_LDouble
tan(CPU86_LDouble x
);
1532 extern CPU86_LDouble
atan2(CPU86_LDouble
, CPU86_LDouble
);
1533 extern CPU86_LDouble
floor(CPU86_LDouble x
);
1534 extern CPU86_LDouble
ceil(CPU86_LDouble x
);
1535 extern CPU86_LDouble
rint(CPU86_LDouble x
);
1537 #if defined(__powerpc__)
1538 extern CPU86_LDouble
copysign(CPU86_LDouble
, CPU86_LDouble
);
1540 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1541 double qemu_rint(double x
)
1543 double y
= 4503599627370496.0;
1554 #define rint qemu_rint
1557 #define RC_MASK 0xc00
1558 #define RC_NEAR 0x000
1559 #define RC_DOWN 0x400
1561 #define RC_CHOP 0xc00
1563 #define MAXTAN 9223372036854775808.0
1565 #ifdef USE_X86LDOUBLE
1571 unsigned long long lower
;
1572 unsigned short upper
;
1576 /* the following deal with x86 long double-precision numbers */
1577 #define MAXEXPD 0x7fff
1578 #define EXPBIAS 16383
1579 #define EXPD(fp) (fp.l.upper & 0x7fff)
1580 #define SIGND(fp) ((fp.l.upper) & 0x8000)
1581 #define MANTD(fp) (fp.l.lower)
1582 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
1588 #ifndef WORDS_BIGENDIAN
1590 unsigned long lower
;
1596 unsigned long lower
;
1602 /* the following deal with IEEE double-precision numbers */
1603 #define MAXEXPD 0x7ff
1604 #define EXPBIAS 1023
1605 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
1606 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
1607 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
1608 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
1613 void OPPROTO
op_flds_FT0_A0(void)
1615 #ifdef USE_FP_CONVERT
1616 FP_CONVERT
.i32
= ldl((void *)A0
);
1619 FT0
= ldfl((void *)A0
);
1623 void OPPROTO
op_fldl_FT0_A0(void)
1625 #ifdef USE_FP_CONVERT
1626 FP_CONVERT
.i64
= ldq((void *)A0
);
1629 FT0
= ldfq((void *)A0
);
1633 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1634 #ifdef USE_INT_TO_FLOAT_HELPERS
1636 void helper_fild_FT0_A0(void)
1638 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1641 void helper_fildl_FT0_A0(void)
1643 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1646 void helper_fildll_FT0_A0(void)
1648 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1651 void OPPROTO
op_fild_FT0_A0(void)
1653 helper_fild_FT0_A0();
1656 void OPPROTO
op_fildl_FT0_A0(void)
1658 helper_fildl_FT0_A0();
1661 void OPPROTO
op_fildll_FT0_A0(void)
1663 helper_fildll_FT0_A0();
1668 void OPPROTO
op_fild_FT0_A0(void)
1670 #ifdef USE_FP_CONVERT
1671 FP_CONVERT
.i32
= ldsw((void *)A0
);
1672 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1674 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1678 void OPPROTO
op_fildl_FT0_A0(void)
1680 #ifdef USE_FP_CONVERT
1681 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1682 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1684 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1688 void OPPROTO
op_fildll_FT0_A0(void)
1690 #ifdef USE_FP_CONVERT
1691 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1692 FT0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1694 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1701 void OPPROTO
op_flds_ST0_A0(void)
1703 #ifdef USE_FP_CONVERT
1704 FP_CONVERT
.i32
= ldl((void *)A0
);
1707 ST0
= ldfl((void *)A0
);
1711 void OPPROTO
op_fldl_ST0_A0(void)
1713 #ifdef USE_FP_CONVERT
1714 FP_CONVERT
.i64
= ldq((void *)A0
);
1717 ST0
= ldfq((void *)A0
);
1721 #ifdef USE_X86LDOUBLE
1722 void OPPROTO
op_fldt_ST0_A0(void)
1724 ST0
= *(long double *)A0
;
1727 void helper_fldt_ST0_A0(void)
1729 CPU86_LDoubleU temp
;
1732 upper
= lduw((uint8_t *)A0
+ 8);
1733 /* XXX: handle overflow ? */
1734 e
= (upper
& 0x7fff) - 16383 + EXPBIAS
; /* exponent */
1735 e
|= (upper
>> 4) & 0x800; /* sign */
1736 temp
.ll
= ((ldq((void *)A0
) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e
<< 52);
1740 void OPPROTO
op_fldt_ST0_A0(void)
1742 helper_fldt_ST0_A0();
1746 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1747 #ifdef USE_INT_TO_FLOAT_HELPERS
1749 void helper_fild_ST0_A0(void)
1751 ST0
= (CPU86_LDouble
)ldsw((void *)A0
);
1754 void helper_fildl_ST0_A0(void)
1756 ST0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1759 void helper_fildll_ST0_A0(void)
1761 ST0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1764 void OPPROTO
op_fild_ST0_A0(void)
1766 helper_fild_ST0_A0();
1769 void OPPROTO
op_fildl_ST0_A0(void)
1771 helper_fildl_ST0_A0();
1774 void OPPROTO
op_fildll_ST0_A0(void)
1776 helper_fildll_ST0_A0();
1781 void OPPROTO
op_fild_ST0_A0(void)
1783 #ifdef USE_FP_CONVERT
1784 FP_CONVERT
.i32
= ldsw((void *)A0
);
1785 ST0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1787 ST0
= (CPU86_LDouble
)ldsw((void *)A0
);
1791 void OPPROTO
op_fildl_ST0_A0(void)
1793 #ifdef USE_FP_CONVERT
1794 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1795 ST0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1797 ST0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1801 void OPPROTO
op_fildll_ST0_A0(void)
1803 #ifdef USE_FP_CONVERT
1804 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1805 ST0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1807 ST0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1815 void OPPROTO
op_fsts_ST0_A0(void)
1817 #ifdef USE_FP_CONVERT
1819 stfl((void *)A0
, FP_CONVERT
.f
);
1821 stfl((void *)A0
, (float)ST0
);
1825 void OPPROTO
op_fstl_ST0_A0(void)
1827 stfq((void *)A0
, (double)ST0
);
1830 #ifdef USE_X86LDOUBLE
1831 void OPPROTO
op_fstt_ST0_A0(void)
1833 *(long double *)A0
= ST0
;
1836 void helper_fstt_ST0_A0(void)
1838 CPU86_LDoubleU temp
;
1842 stq((void *)A0
, (MANTD(temp
) << 11) | (1LL << 63));
1843 /* exponent + sign */
1844 e
= EXPD(temp
) - EXPBIAS
+ 16383;
1845 e
|= SIGND(temp
) >> 16;
1846 stw((uint8_t *)A0
+ 8, e
);
1849 void OPPROTO
op_fstt_ST0_A0(void)
1851 helper_fstt_ST0_A0();
1855 void OPPROTO
op_fist_ST0_A0(void)
1857 #if defined(__sparc__) && !defined(__sparc_v9__)
1858 register CPU86_LDouble d
asm("o0");
1866 stw((void *)A0
, val
);
1869 void OPPROTO
op_fistl_ST0_A0(void)
1871 #if defined(__sparc__) && !defined(__sparc_v9__)
1872 register CPU86_LDouble d
asm("o0");
1880 stl((void *)A0
, val
);
1883 void OPPROTO
op_fistll_ST0_A0(void)
1885 #if defined(__sparc__) && !defined(__sparc_v9__)
1886 register CPU86_LDouble d
asm("o0");
1894 stq((void *)A0
, val
);
1899 #define MUL10(iv) ( iv + iv + (iv << 3) )
1901 void helper_fbld_ST0_A0(void)
1904 CPU86_LDouble fpsrcop
;
1908 /* in this code, seg/m32i will be used as temporary ptr/int */
1909 seg
= (uint8_t *)A0
+ 8;
1911 /* XXX: raise exception */
1915 /* XXX: raise exception */
1916 if ((v
& 0xf0) != 0)
1918 m32i
= v
; /* <-- d14 */
1920 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d13 */
1921 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d12 */
1923 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d11 */
1924 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d10 */
1926 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d9 */
1927 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d8 */
1928 fpsrcop
= ((CPU86_LDouble
)m32i
) * 100000000.0;
1931 m32i
= (v
>> 4); /* <-- d7 */
1932 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d6 */
1934 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d5 */
1935 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d4 */
1937 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d3 */
1938 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d2 */
1940 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d1 */
1941 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d0 */
1942 fpsrcop
+= ((CPU86_LDouble
)m32i
);
1943 if ( ldub(seg
+9) & 0x80 )
1948 void OPPROTO
op_fbld_ST0_A0(void)
1950 helper_fbld_ST0_A0();
1953 void helper_fbst_ST0_A0(void)
1955 CPU86_LDouble fptemp
;
1956 CPU86_LDouble fpsrcop
;
1958 uint8_t *mem_ref
, *mem_end
;
1960 fpsrcop
= rint(ST0
);
1961 mem_ref
= (uint8_t *)A0
;
1962 mem_end
= mem_ref
+ 8;
1963 if ( fpsrcop
< 0.0 ) {
1964 stw(mem_end
, 0x8000);
1967 stw(mem_end
, 0x0000);
1969 while (mem_ref
< mem_end
) {
1972 fptemp
= floor(fpsrcop
/10.0);
1973 v
= ((int)(fpsrcop
- fptemp
*10.0));
1974 if (fptemp
== 0.0) {
1979 fptemp
= floor(fpsrcop
/10.0);
1980 v
|= (((int)(fpsrcop
- fptemp
*10.0)) << 4);
1984 while (mem_ref
< mem_end
) {
1989 void OPPROTO
op_fbst_ST0_A0(void)
1991 helper_fbst_ST0_A0();
1996 static inline void fpush(void)
1998 env
->fpstt
= (env
->fpstt
- 1) & 7;
1999 env
->fptags
[env
->fpstt
] = 0; /* validate stack entry */
2002 static inline void fpop(void)
2004 env
->fptags
[env
->fpstt
] = 1; /* invvalidate stack entry */
2005 env
->fpstt
= (env
->fpstt
+ 1) & 7;
2008 void OPPROTO
op_fpush(void)
2013 void OPPROTO
op_fpop(void)
2018 void OPPROTO
op_fdecstp(void)
2020 env
->fpstt
= (env
->fpstt
- 1) & 7;
2021 env
->fpus
&= (~0x4700);
2024 void OPPROTO
op_fincstp(void)
2026 env
->fpstt
= (env
->fpstt
+ 1) & 7;
2027 env
->fpus
&= (~0x4700);
2030 void OPPROTO
op_fmov_ST0_FT0(void)
2035 void OPPROTO
op_fmov_FT0_STN(void)
2040 void OPPROTO
op_fmov_ST0_STN(void)
2045 void OPPROTO
op_fmov_STN_ST0(void)
2050 void OPPROTO
op_fxchg_ST0_STN(void)
2058 /* FPU operations */
2060 /* XXX: handle nans */
2061 void OPPROTO
op_fcom_ST0_FT0(void)
2063 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
2065 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
2066 else if (ST0
== FT0
)
2067 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
2071 /* XXX: handle nans */
2072 void OPPROTO
op_fucom_ST0_FT0(void)
2074 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
2076 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
2077 else if (ST0
== FT0
)
2078 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
2082 void OPPROTO
op_fadd_ST0_FT0(void)
2087 void OPPROTO
op_fmul_ST0_FT0(void)
2092 void OPPROTO
op_fsub_ST0_FT0(void)
2097 void OPPROTO
op_fsubr_ST0_FT0(void)
2102 void OPPROTO
op_fdiv_ST0_FT0(void)
2107 void OPPROTO
op_fdivr_ST0_FT0(void)
2112 /* fp operations between STN and ST0 */
2114 void OPPROTO
op_fadd_STN_ST0(void)
2119 void OPPROTO
op_fmul_STN_ST0(void)
2124 void OPPROTO
op_fsub_STN_ST0(void)
2129 void OPPROTO
op_fsubr_STN_ST0(void)
2136 void OPPROTO
op_fdiv_STN_ST0(void)
2141 void OPPROTO
op_fdivr_STN_ST0(void)
2148 /* misc FPU operations */
2149 void OPPROTO
op_fchs_ST0(void)
2154 void OPPROTO
op_fabs_ST0(void)
2159 void helper_fxam_ST0(void)
2161 CPU86_LDoubleU temp
;
2166 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2168 env
->fpus
|= 0x200; /* C1 <-- 1 */
2170 expdif
= EXPD(temp
);
2171 if (expdif
== MAXEXPD
) {
2172 if (MANTD(temp
) == 0)
2173 env
->fpus
|= 0x500 /*Infinity*/;
2175 env
->fpus
|= 0x100 /*NaN*/;
2176 } else if (expdif
== 0) {
2177 if (MANTD(temp
) == 0)
2178 env
->fpus
|= 0x4000 /*Zero*/;
2180 env
->fpus
|= 0x4400 /*Denormal*/;
2186 void OPPROTO
op_fxam_ST0(void)
2191 void OPPROTO
op_fld1_ST0(void)
2193 ST0
= *(CPU86_LDouble
*)&f15rk
[1];
2196 void OPPROTO
op_fldl2t_ST0(void)
2198 ST0
= *(CPU86_LDouble
*)&f15rk
[6];
2201 void OPPROTO
op_fldl2e_ST0(void)
2203 ST0
= *(CPU86_LDouble
*)&f15rk
[5];
2206 void OPPROTO
op_fldpi_ST0(void)
2208 ST0
= *(CPU86_LDouble
*)&f15rk
[2];
2211 void OPPROTO
op_fldlg2_ST0(void)
2213 ST0
= *(CPU86_LDouble
*)&f15rk
[3];
2216 void OPPROTO
op_fldln2_ST0(void)
2218 ST0
= *(CPU86_LDouble
*)&f15rk
[4];
2221 void OPPROTO
op_fldz_ST0(void)
2223 ST0
= *(CPU86_LDouble
*)&f15rk
[0];
2226 void OPPROTO
op_fldz_FT0(void)
2228 ST0
= *(CPU86_LDouble
*)&f15rk
[0];
2231 void helper_f2xm1(void)
2233 ST0
= pow(2.0,ST0
) - 1.0;
2236 void helper_fyl2x(void)
2238 CPU86_LDouble fptemp
;
2242 fptemp
= log(fptemp
)/log(2.0); /* log2(ST) */
2246 env
->fpus
&= (~0x4700);
2251 void helper_fptan(void)
2253 CPU86_LDouble fptemp
;
2256 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2262 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2263 /* the above code is for |arg| < 2**52 only */
2267 void helper_fpatan(void)
2269 CPU86_LDouble fptemp
, fpsrcop
;
2273 ST1
= atan2(fpsrcop
,fptemp
);
2277 void helper_fxtract(void)
2279 CPU86_LDoubleU temp
;
2280 unsigned int expdif
;
2283 expdif
= EXPD(temp
) - EXPBIAS
;
2284 /*DP exponent bias*/
2291 void helper_fprem1(void)
2293 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2294 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2300 fpsrcop1
.d
= fpsrcop
;
2302 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2304 dblq
= fpsrcop
/ fptemp
;
2305 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2306 ST0
= fpsrcop
- fptemp
*dblq
;
2307 q
= (int)dblq
; /* cutting off top bits is assumed here */
2308 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2309 /* (C0,C1,C3) <-- (q2,q1,q0) */
2310 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2311 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2312 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2314 env
->fpus
|= 0x400; /* C2 <-- 1 */
2315 fptemp
= pow(2.0, expdif
-50);
2316 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2317 /* fpsrcop = integer obtained by rounding to the nearest */
2318 fpsrcop
= (fpsrcop
-floor(fpsrcop
) < ceil(fpsrcop
)-fpsrcop
)?
2319 floor(fpsrcop
): ceil(fpsrcop
);
2320 ST0
-= (ST1
* fpsrcop
* fptemp
);
2324 void helper_fprem(void)
2326 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2327 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2333 fpsrcop1
.d
= fpsrcop
;
2335 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2336 if ( expdif
< 53 ) {
2337 dblq
= fpsrcop
/ fptemp
;
2338 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2339 ST0
= fpsrcop
- fptemp
*dblq
;
2340 q
= (int)dblq
; /* cutting off top bits is assumed here */
2341 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2342 /* (C0,C1,C3) <-- (q2,q1,q0) */
2343 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2344 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2345 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2347 env
->fpus
|= 0x400; /* C2 <-- 1 */
2348 fptemp
= pow(2.0, expdif
-50);
2349 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2350 /* fpsrcop = integer obtained by chopping */
2351 fpsrcop
= (fpsrcop
< 0.0)?
2352 -(floor(fabs(fpsrcop
))): floor(fpsrcop
);
2353 ST0
-= (ST1
* fpsrcop
* fptemp
);
2357 void helper_fyl2xp1(void)
2359 CPU86_LDouble fptemp
;
2362 if ((fptemp
+1.0)>0.0) {
2363 fptemp
= log(fptemp
+1.0) / log(2.0); /* log2(ST+1.0) */
2367 env
->fpus
&= (~0x4700);
2372 void helper_fsqrt(void)
2374 CPU86_LDouble fptemp
;
2378 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2384 void helper_fsincos(void)
2386 CPU86_LDouble fptemp
;
2389 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2395 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2396 /* the above code is for |arg| < 2**63 only */
2400 void helper_frndint(void)
2405 void helper_fscale(void)
2407 CPU86_LDouble fpsrcop
, fptemp
;
2410 fptemp
= pow(fpsrcop
,ST1
);
2414 void helper_fsin(void)
2416 CPU86_LDouble fptemp
;
2419 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2423 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2424 /* the above code is for |arg| < 2**53 only */
2428 void helper_fcos(void)
2430 CPU86_LDouble fptemp
;
2433 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2437 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2438 /* the above code is for |arg5 < 2**63 only */
2442 /* associated heplers to reduce generated code length and to simplify
2443 relocation (FP constants are usually stored in .rodata section) */
2445 void OPPROTO
op_f2xm1(void)
2450 void OPPROTO
op_fyl2x(void)
2455 void OPPROTO
op_fptan(void)
2460 void OPPROTO
op_fpatan(void)
2465 void OPPROTO
op_fxtract(void)
2470 void OPPROTO
op_fprem1(void)
2476 void OPPROTO
op_fprem(void)
2481 void OPPROTO
op_fyl2xp1(void)
2486 void OPPROTO
op_fsqrt(void)
2491 void OPPROTO
op_fsincos(void)
2496 void OPPROTO
op_frndint(void)
2501 void OPPROTO
op_fscale(void)
2506 void OPPROTO
op_fsin(void)
2511 void OPPROTO
op_fcos(void)
2516 void OPPROTO
op_fnstsw_A0(void)
2519 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2520 stw((void *)A0
, fpus
);
2523 void OPPROTO
op_fnstsw_EAX(void)
2526 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2527 EAX
= (EAX
& 0xffff0000) | fpus
;
2530 void OPPROTO
op_fnstcw_A0(void)
2532 stw((void *)A0
, env
->fpuc
);
2535 void OPPROTO
op_fldcw_A0(void)
2538 env
->fpuc
= lduw((void *)A0
);
2539 /* set rounding mode */
2540 switch(env
->fpuc
& RC_MASK
) {
2543 rnd_type
= FE_TONEAREST
;
2546 rnd_type
= FE_DOWNWARD
;
2549 rnd_type
= FE_UPWARD
;
2552 rnd_type
= FE_TOWARDZERO
;
2555 fesetround(rnd_type
);
2558 void OPPROTO
op_fclex(void)
2560 env
->fpus
&= 0x7f00;
2563 void OPPROTO
op_fninit(void)
2578 /* threading support */
2579 void OPPROTO
op_lock(void)
2584 void OPPROTO
op_unlock(void)