]>
git.proxmox.com Git - 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_raise_exception(void)
628 exception_index
= PARAM1
;
629 raise_exception(exception_index
);
632 void OPPROTO
op_into(void)
635 eflags
= cc_table
[CC_OP
].compute_all();
638 raise_exception(EXCP04_INTO
);
643 void OPPROTO
op_cli(void)
645 env
->eflags
&= ~IF_MASK
;
648 void OPPROTO
op_sti(void)
650 env
->eflags
|= IF_MASK
;
654 /* vm86plus instructions */
655 void OPPROTO
op_cli_vm(void)
657 env
->eflags
&= ~VIF_MASK
;
660 void OPPROTO
op_sti_vm(void)
662 env
->eflags
|= VIF_MASK
;
663 if (env
->eflags
& VIP_MASK
) {
665 raise_exception(EXCP0D_GPF
);
671 void OPPROTO
op_boundw(void)
674 low
= ldsw((uint8_t *)A0
);
675 high
= ldsw((uint8_t *)A0
+ 2);
677 if (v
< low
|| v
> high
)
678 raise_exception(EXCP05_BOUND
);
682 void OPPROTO
op_boundl(void)
685 low
= ldl((uint8_t *)A0
);
686 high
= ldl((uint8_t *)A0
+ 4);
688 if (v
< low
|| v
> high
)
689 raise_exception(EXCP05_BOUND
);
693 void OPPROTO
op_cmpxchg8b(void)
698 eflags
= cc_table
[CC_OP
].compute_all();
699 d
= ldq((uint8_t *)A0
);
700 if (d
== (((uint64_t)EDX
<< 32) | EAX
)) {
701 stq((uint8_t *)A0
, ((uint64_t)ECX
<< 32) | EBX
);
712 #if defined(__powerpc__)
714 /* on PowerPC we patch the jump instruction directly */
715 #define JUMP_TB(tbparam, n, eip)\
717 static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
718 asm volatile ("b %0" : : "i" (&__op_jmp ## n));\
720 T0 = (long)(tbparam) + (n);\
726 /* jump to next block operations (more portable code, does not need
727 cache flushing, but slower because of indirect jump) */
728 #define JUMP_TB(tbparam, n, eip)\
730 static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
731 goto *((TranslationBlock *)tbparam)->tb_next[n];\
733 T0 = (long)(tbparam) + (n);\
739 void OPPROTO
op_jmp_tb_next(void)
741 JUMP_TB(PARAM1
, 0, PARAM2
);
744 void OPPROTO
op_movl_T0_0(void)
749 /* multiple size ops */
754 #include "ops_template.h"
758 #include "ops_template.h"
762 #include "ops_template.h"
767 void OPPROTO
op_movsbl_T0_T0(void)
772 void OPPROTO
op_movzbl_T0_T0(void)
777 void OPPROTO
op_movswl_T0_T0(void)
782 void OPPROTO
op_movzwl_T0_T0(void)
787 void OPPROTO
op_movswl_EAX_AX(void)
792 void OPPROTO
op_movsbw_AX_AL(void)
794 EAX
= (EAX
& 0xffff0000) | ((int8_t)EAX
& 0xffff);
797 void OPPROTO
op_movslq_EDX_EAX(void)
799 EDX
= (int32_t)EAX
>> 31;
802 void OPPROTO
op_movswl_DX_AX(void)
804 EDX
= (EDX
& 0xffff0000) | (((int16_t)EAX
>> 15) & 0xffff);
809 void op_pushl_T0(void)
813 stl((void *)offset
, T0
);
814 /* modify ESP after to handle exceptions correctly */
818 void op_pushw_T0(void)
822 stw((void *)offset
, T0
);
823 /* modify ESP after to handle exceptions correctly */
827 void op_pushl_ss32_T0(void)
831 stl(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
832 /* modify ESP after to handle exceptions correctly */
836 void op_pushw_ss32_T0(void)
840 stw(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
841 /* modify ESP after to handle exceptions correctly */
845 void op_pushl_ss16_T0(void)
848 offset
= (ESP
- 4) & 0xffff;
849 stl(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
850 /* modify ESP after to handle exceptions correctly */
851 ESP
= (ESP
& ~0xffff) | offset
;
854 void op_pushw_ss16_T0(void)
857 offset
= (ESP
- 2) & 0xffff;
858 stw(env
->seg_cache
[R_SS
].base
+ offset
, T0
);
859 /* modify ESP after to handle exceptions correctly */
860 ESP
= (ESP
& ~0xffff) | offset
;
863 /* NOTE: ESP update is done after */
864 void op_popl_T0(void)
866 T0
= ldl((void *)ESP
);
869 void op_popw_T0(void)
871 T0
= lduw((void *)ESP
);
874 void op_popl_ss32_T0(void)
876 T0
= ldl(env
->seg_cache
[R_SS
].base
+ ESP
);
879 void op_popw_ss32_T0(void)
881 T0
= lduw(env
->seg_cache
[R_SS
].base
+ ESP
);
884 void op_popl_ss16_T0(void)
886 T0
= ldl(env
->seg_cache
[R_SS
].base
+ (ESP
& 0xffff));
889 void op_popw_ss16_T0(void)
891 T0
= lduw(env
->seg_cache
[R_SS
].base
+ (ESP
& 0xffff));
894 void op_addl_ESP_4(void)
899 void op_addl_ESP_2(void)
904 void op_addw_ESP_4(void)
906 ESP
= (ESP
& ~0xffff) | ((ESP
+ 4) & 0xffff);
909 void op_addw_ESP_2(void)
911 ESP
= (ESP
& ~0xffff) | ((ESP
+ 2) & 0xffff);
914 void op_addl_ESP_im(void)
919 void op_addw_ESP_im(void)
921 ESP
= (ESP
& ~0xffff) | ((ESP
+ PARAM1
) & 0xffff);
929 void OPPROTO
op_rdtsc(void)
933 asm("rdtsc" : "=A" (val
));
935 /* better than nothing: the time increases */
942 /* We simulate a pre-MMX pentium as in valgrind */
943 #define CPUID_FP87 (1 << 0)
944 #define CPUID_VME (1 << 1)
945 #define CPUID_DE (1 << 2)
946 #define CPUID_PSE (1 << 3)
947 #define CPUID_TSC (1 << 4)
948 #define CPUID_MSR (1 << 5)
949 #define CPUID_PAE (1 << 6)
950 #define CPUID_MCE (1 << 7)
951 #define CPUID_CX8 (1 << 8)
952 #define CPUID_APIC (1 << 9)
953 #define CPUID_SEP (1 << 11) /* sysenter/sysexit */
954 #define CPUID_MTRR (1 << 12)
955 #define CPUID_PGE (1 << 13)
956 #define CPUID_MCA (1 << 14)
957 #define CPUID_CMOV (1 << 15)
959 #define CPUID_MMX (1 << 23)
960 #define CPUID_FXSR (1 << 24)
961 #define CPUID_SSE (1 << 25)
962 #define CPUID_SSE2 (1 << 26)
964 void helper_cpuid(void)
967 EAX
= 1; /* max EAX index supported */
976 EDX
= CPUID_FP87
| CPUID_DE
| CPUID_PSE
|
977 CPUID_TSC
| CPUID_MSR
| CPUID_MCE
|
982 void OPPROTO
op_cpuid(void)
990 void OPPROTO
op_aam(void)
997 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
1001 void OPPROTO
op_aad(void)
1006 ah
= (EAX
>> 8) & 0xff;
1007 al
= ((ah
* base
) + al
) & 0xff;
1008 EAX
= (EAX
& ~0xffff) | al
;
1012 void OPPROTO
op_aaa(void)
1018 eflags
= cc_table
[CC_OP
].compute_all();
1021 ah
= (EAX
>> 8) & 0xff;
1023 icarry
= (al
> 0xf9);
1024 if (((al
& 0x0f) > 9 ) || af
) {
1025 al
= (al
+ 6) & 0x0f;
1026 ah
= (ah
+ 1 + icarry
) & 0xff;
1027 eflags
|= CC_C
| CC_A
;
1029 eflags
&= ~(CC_C
| CC_A
);
1032 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
1036 void OPPROTO
op_aas(void)
1042 eflags
= cc_table
[CC_OP
].compute_all();
1045 ah
= (EAX
>> 8) & 0xff;
1048 if (((al
& 0x0f) > 9 ) || af
) {
1049 al
= (al
- 6) & 0x0f;
1050 ah
= (ah
- 1 - icarry
) & 0xff;
1051 eflags
|= CC_C
| CC_A
;
1053 eflags
&= ~(CC_C
| CC_A
);
1056 EAX
= (EAX
& ~0xffff) | al
| (ah
<< 8);
1060 void OPPROTO
op_daa(void)
1065 eflags
= cc_table
[CC_OP
].compute_all();
1071 if (((al
& 0x0f) > 9 ) || af
) {
1072 al
= (al
+ 6) & 0xff;
1075 if ((al
> 0x9f) || cf
) {
1076 al
= (al
+ 0x60) & 0xff;
1079 EAX
= (EAX
& ~0xff) | al
;
1080 /* well, speed is not an issue here, so we compute the flags by hand */
1081 eflags
|= (al
== 0) << 6; /* zf */
1082 eflags
|= parity_table
[al
]; /* pf */
1083 eflags
|= (al
& 0x80); /* sf */
1087 void OPPROTO
op_das(void)
1089 int al
, al1
, af
, cf
;
1092 eflags
= cc_table
[CC_OP
].compute_all();
1099 if (((al
& 0x0f) > 9 ) || af
) {
1103 al
= (al
- 6) & 0xff;
1105 if ((al1
> 0x99) || cf
) {
1106 al
= (al
- 0x60) & 0xff;
1109 EAX
= (EAX
& ~0xff) | al
;
1110 /* well, speed is not an issue here, so we compute the flags by hand */
1111 eflags
|= (al
== 0) << 6; /* zf */
1112 eflags
|= parity_table
[al
]; /* pf */
1113 eflags
|= (al
& 0x80); /* sf */
1117 /* segment handling */
1119 /* XXX: use static VM86 information */
1120 void load_seg(int seg_reg
, int selector
)
1123 SegmentDescriptorTable
*dt
;
1128 sc
= &env
->seg_cache
[seg_reg
];
1129 if (env
->eflags
& VM_MASK
) {
1130 sc
->base
= (void *)(selector
<< 4);
1138 index
= selector
& ~7;
1139 if ((index
+ 7) > dt
->limit
)
1140 raise_exception_err(EXCP0D_GPF
, selector
);
1141 ptr
= dt
->base
+ index
;
1144 sc
->base
= (void *)((e1
>> 16) | ((e2
& 0xff) << 16) | (e2
& 0xff000000));
1145 sc
->limit
= (e1
& 0xffff) | (e2
& 0x000f0000);
1147 sc
->limit
= (sc
->limit
<< 12) | 0xfff;
1148 sc
->seg_32bit
= (e2
>> 22) & 1;
1150 fprintf(logfile
, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
1151 selector
, (unsigned long)sc
->base
, sc
->limit
, sc
->seg_32bit
);
1154 env
->segs
[seg_reg
] = selector
;
1157 void OPPROTO
op_movl_seg_T0(void)
1159 load_seg(PARAM1
, T0
& 0xffff);
1162 void OPPROTO
op_movl_T0_seg(void)
1164 T0
= env
->segs
[PARAM1
];
1167 void OPPROTO
op_movl_A0_seg(void)
1169 A0
= *(unsigned long *)((char *)env
+ PARAM1
);
1172 void OPPROTO
op_addl_A0_seg(void)
1174 A0
+= *(unsigned long *)((char *)env
+ PARAM1
);
1177 void helper_lsl(void)
1179 unsigned int selector
, limit
;
1180 SegmentDescriptorTable
*dt
;
1185 CC_SRC
= cc_table
[CC_OP
].compute_all() & ~CC_Z
;
1186 selector
= T0
& 0xffff;
1191 index
= selector
& ~7;
1192 if ((index
+ 7) > dt
->limit
)
1194 ptr
= dt
->base
+ index
;
1197 limit
= (e1
& 0xffff) | (e2
& 0x000f0000);
1199 limit
= (limit
<< 12) | 0xfff;
1204 void OPPROTO
op_lsl(void)
1209 void helper_lar(void)
1211 unsigned int selector
;
1212 SegmentDescriptorTable
*dt
;
1217 CC_SRC
= cc_table
[CC_OP
].compute_all() & ~CC_Z
;
1218 selector
= T0
& 0xffff;
1223 index
= selector
& ~7;
1224 if ((index
+ 7) > dt
->limit
)
1226 ptr
= dt
->base
+ index
;
1228 T1
= e2
& 0x00f0ff00;
1232 void OPPROTO
op_lar(void)
1237 /* flags handling */
1239 /* slow jumps cases : in order to avoid calling a function with a
1240 pointer (which can generate a stack frame on PowerPC), we use
1241 op_setcc to set T0 and then call op_jcc. */
1242 void OPPROTO
op_jcc(void)
1245 JUMP_TB(PARAM1
, 0, PARAM2
);
1247 JUMP_TB(PARAM1
, 1, PARAM3
);
1251 /* slow set cases (compute x86 flags) */
1252 void OPPROTO
op_seto_T0_cc(void)
1255 eflags
= cc_table
[CC_OP
].compute_all();
1256 T0
= (eflags
>> 11) & 1;
1259 void OPPROTO
op_setb_T0_cc(void)
1261 T0
= cc_table
[CC_OP
].compute_c();
1264 void OPPROTO
op_setz_T0_cc(void)
1267 eflags
= cc_table
[CC_OP
].compute_all();
1268 T0
= (eflags
>> 6) & 1;
1271 void OPPROTO
op_setbe_T0_cc(void)
1274 eflags
= cc_table
[CC_OP
].compute_all();
1275 T0
= (eflags
& (CC_Z
| CC_C
)) != 0;
1278 void OPPROTO
op_sets_T0_cc(void)
1281 eflags
= cc_table
[CC_OP
].compute_all();
1282 T0
= (eflags
>> 7) & 1;
1285 void OPPROTO
op_setp_T0_cc(void)
1288 eflags
= cc_table
[CC_OP
].compute_all();
1289 T0
= (eflags
>> 2) & 1;
1292 void OPPROTO
op_setl_T0_cc(void)
1295 eflags
= cc_table
[CC_OP
].compute_all();
1296 T0
= ((eflags
^ (eflags
>> 4)) >> 7) & 1;
1299 void OPPROTO
op_setle_T0_cc(void)
1302 eflags
= cc_table
[CC_OP
].compute_all();
1303 T0
= (((eflags
^ (eflags
>> 4)) & 0x80) || (eflags
& CC_Z
)) != 0;
1306 void OPPROTO
op_xor_T0_1(void)
1311 void OPPROTO
op_set_cc_op(void)
1316 #define FL_UPDATE_MASK32 (TF_MASK | AC_MASK | ID_MASK)
1317 #define FL_UPDATE_MASK16 (TF_MASK)
1319 void OPPROTO
op_movl_eflags_T0(void)
1323 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1324 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1325 /* we also update some system flags as in user mode */
1326 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK32
) | (eflags
& FL_UPDATE_MASK32
);
1329 void OPPROTO
op_movw_eflags_T0(void)
1333 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1334 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1335 /* we also update some system flags as in user mode */
1336 env
->eflags
= (env
->eflags
& ~FL_UPDATE_MASK16
) | (eflags
& FL_UPDATE_MASK16
);
1340 /* vm86plus version */
1341 void OPPROTO
op_movw_eflags_T0_vm(void)
1345 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1346 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1347 /* we also update some system flags as in user mode */
1348 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK16
| VIF_MASK
)) |
1349 (eflags
& FL_UPDATE_MASK16
);
1350 if (eflags
& IF_MASK
) {
1351 env
->eflags
|= VIF_MASK
;
1352 if (env
->eflags
& VIP_MASK
) {
1354 raise_exception(EXCP0D_GPF
);
1360 void OPPROTO
op_movl_eflags_T0_vm(void)
1364 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
1365 DF
= 1 - (2 * ((eflags
>> 10) & 1));
1366 /* we also update some system flags as in user mode */
1367 env
->eflags
= (env
->eflags
& ~(FL_UPDATE_MASK32
| VIF_MASK
)) |
1368 (eflags
& FL_UPDATE_MASK32
);
1369 if (eflags
& IF_MASK
) {
1370 env
->eflags
|= VIF_MASK
;
1371 if (env
->eflags
& VIP_MASK
) {
1373 raise_exception(EXCP0D_GPF
);
1380 /* XXX: compute only O flag */
1381 void OPPROTO
op_movb_eflags_T0(void)
1384 of
= cc_table
[CC_OP
].compute_all() & CC_O
;
1385 CC_SRC
= (T0
& (CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
)) | of
;
1388 void OPPROTO
op_movl_T0_eflags(void)
1391 eflags
= cc_table
[CC_OP
].compute_all();
1392 eflags
|= (DF
& DF_MASK
);
1393 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
);
1397 /* vm86plus version */
1399 void OPPROTO
op_movl_T0_eflags_vm(void)
1402 eflags
= cc_table
[CC_OP
].compute_all();
1403 eflags
|= (DF
& DF_MASK
);
1404 eflags
|= env
->eflags
& ~(VM_MASK
| RF_MASK
| IF_MASK
);
1405 if (env
->eflags
& VIF_MASK
)
1411 void OPPROTO
op_cld(void)
1416 void OPPROTO
op_std(void)
1421 void OPPROTO
op_clc(void)
1424 eflags
= cc_table
[CC_OP
].compute_all();
1429 void OPPROTO
op_stc(void)
1432 eflags
= cc_table
[CC_OP
].compute_all();
1437 void OPPROTO
op_cmc(void)
1440 eflags
= cc_table
[CC_OP
].compute_all();
1445 void OPPROTO
op_salc(void)
1448 cf
= cc_table
[CC_OP
].compute_c();
1449 EAX
= (EAX
& ~0xff) | ((-cf
) & 0xff);
1452 static int compute_all_eflags(void)
1457 static int compute_c_eflags(void)
1459 return CC_SRC
& CC_C
;
1462 static int compute_c_mul(void)
1469 static int compute_all_mul(void)
1471 int cf
, pf
, af
, zf
, sf
, of
;
1473 pf
= 0; /* undefined */
1474 af
= 0; /* undefined */
1475 zf
= 0; /* undefined */
1476 sf
= 0; /* undefined */
1478 return cf
| pf
| af
| zf
| sf
| of
;
1481 CCTable cc_table
[CC_OP_NB
] = {
1482 [CC_OP_DYNAMIC
] = { /* should never happen */ },
1484 [CC_OP_EFLAGS
] = { compute_all_eflags
, compute_c_eflags
},
1486 [CC_OP_MUL
] = { compute_all_mul
, compute_c_mul
},
1488 [CC_OP_ADDB
] = { compute_all_addb
, compute_c_addb
},
1489 [CC_OP_ADDW
] = { compute_all_addw
, compute_c_addw
},
1490 [CC_OP_ADDL
] = { compute_all_addl
, compute_c_addl
},
1492 [CC_OP_ADCB
] = { compute_all_adcb
, compute_c_adcb
},
1493 [CC_OP_ADCW
] = { compute_all_adcw
, compute_c_adcw
},
1494 [CC_OP_ADCL
] = { compute_all_adcl
, compute_c_adcl
},
1496 [CC_OP_SUBB
] = { compute_all_subb
, compute_c_subb
},
1497 [CC_OP_SUBW
] = { compute_all_subw
, compute_c_subw
},
1498 [CC_OP_SUBL
] = { compute_all_subl
, compute_c_subl
},
1500 [CC_OP_SBBB
] = { compute_all_sbbb
, compute_c_sbbb
},
1501 [CC_OP_SBBW
] = { compute_all_sbbw
, compute_c_sbbw
},
1502 [CC_OP_SBBL
] = { compute_all_sbbl
, compute_c_sbbl
},
1504 [CC_OP_LOGICB
] = { compute_all_logicb
, compute_c_logicb
},
1505 [CC_OP_LOGICW
] = { compute_all_logicw
, compute_c_logicw
},
1506 [CC_OP_LOGICL
] = { compute_all_logicl
, compute_c_logicl
},
1508 [CC_OP_INCB
] = { compute_all_incb
, compute_c_incl
},
1509 [CC_OP_INCW
] = { compute_all_incw
, compute_c_incl
},
1510 [CC_OP_INCL
] = { compute_all_incl
, compute_c_incl
},
1512 [CC_OP_DECB
] = { compute_all_decb
, compute_c_incl
},
1513 [CC_OP_DECW
] = { compute_all_decw
, compute_c_incl
},
1514 [CC_OP_DECL
] = { compute_all_decl
, compute_c_incl
},
1516 [CC_OP_SHLB
] = { compute_all_shlb
, compute_c_shlb
},
1517 [CC_OP_SHLW
] = { compute_all_shlw
, compute_c_shlw
},
1518 [CC_OP_SHLL
] = { compute_all_shll
, compute_c_shll
},
1520 [CC_OP_SARB
] = { compute_all_sarb
, compute_c_sarl
},
1521 [CC_OP_SARW
] = { compute_all_sarw
, compute_c_sarl
},
1522 [CC_OP_SARL
] = { compute_all_sarl
, compute_c_sarl
},
1525 /* floating point support. Some of the code for complicated x87
1526 functions comes from the LGPL'ed x86 emulator found in the Willows
1527 TWIN windows emulator. */
1529 #ifdef USE_X86LDOUBLE
1530 /* use long double functions */
1531 #define lrint lrintl
1532 #define llrint llrintl
1540 #define atan2 atan2l
1541 #define floor floorl
1546 extern int lrint(CPU86_LDouble x
);
1547 extern int64_t llrint(CPU86_LDouble x
);
1548 extern CPU86_LDouble
fabs(CPU86_LDouble x
);
1549 extern CPU86_LDouble
sin(CPU86_LDouble x
);
1550 extern CPU86_LDouble
cos(CPU86_LDouble x
);
1551 extern CPU86_LDouble
sqrt(CPU86_LDouble x
);
1552 extern CPU86_LDouble
pow(CPU86_LDouble
, CPU86_LDouble
);
1553 extern CPU86_LDouble
log(CPU86_LDouble x
);
1554 extern CPU86_LDouble
tan(CPU86_LDouble x
);
1555 extern CPU86_LDouble
atan2(CPU86_LDouble
, CPU86_LDouble
);
1556 extern CPU86_LDouble
floor(CPU86_LDouble x
);
1557 extern CPU86_LDouble
ceil(CPU86_LDouble x
);
1558 extern CPU86_LDouble
rint(CPU86_LDouble x
);
1560 #if defined(__powerpc__)
1561 extern CPU86_LDouble
copysign(CPU86_LDouble
, CPU86_LDouble
);
1563 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1564 double qemu_rint(double x
)
1566 double y
= 4503599627370496.0;
1577 #define rint qemu_rint
1580 #define RC_MASK 0xc00
1581 #define RC_NEAR 0x000
1582 #define RC_DOWN 0x400
1584 #define RC_CHOP 0xc00
1586 #define MAXTAN 9223372036854775808.0
1588 #ifdef USE_X86LDOUBLE
1594 unsigned long long lower
;
1595 unsigned short upper
;
1599 /* the following deal with x86 long double-precision numbers */
1600 #define MAXEXPD 0x7fff
1601 #define EXPBIAS 16383
1602 #define EXPD(fp) (fp.l.upper & 0x7fff)
1603 #define SIGND(fp) ((fp.l.upper) & 0x8000)
1604 #define MANTD(fp) (fp.l.lower)
1605 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
1611 #ifndef WORDS_BIGENDIAN
1613 unsigned long lower
;
1619 unsigned long lower
;
1625 /* the following deal with IEEE double-precision numbers */
1626 #define MAXEXPD 0x7ff
1627 #define EXPBIAS 1023
1628 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
1629 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
1630 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
1631 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
1636 void OPPROTO
op_flds_FT0_A0(void)
1638 #ifdef USE_FP_CONVERT
1639 FP_CONVERT
.i32
= ldl((void *)A0
);
1642 FT0
= ldfl((void *)A0
);
1646 void OPPROTO
op_fldl_FT0_A0(void)
1648 #ifdef USE_FP_CONVERT
1649 FP_CONVERT
.i64
= ldq((void *)A0
);
1652 FT0
= ldfq((void *)A0
);
1656 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1657 #ifdef USE_INT_TO_FLOAT_HELPERS
1659 void helper_fild_FT0_A0(void)
1661 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1664 void helper_fildl_FT0_A0(void)
1666 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1669 void helper_fildll_FT0_A0(void)
1671 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1674 void OPPROTO
op_fild_FT0_A0(void)
1676 helper_fild_FT0_A0();
1679 void OPPROTO
op_fildl_FT0_A0(void)
1681 helper_fildl_FT0_A0();
1684 void OPPROTO
op_fildll_FT0_A0(void)
1686 helper_fildll_FT0_A0();
1691 void OPPROTO
op_fild_FT0_A0(void)
1693 #ifdef USE_FP_CONVERT
1694 FP_CONVERT
.i32
= ldsw((void *)A0
);
1695 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1697 FT0
= (CPU86_LDouble
)ldsw((void *)A0
);
1701 void OPPROTO
op_fildl_FT0_A0(void)
1703 #ifdef USE_FP_CONVERT
1704 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1705 FT0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1707 FT0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1711 void OPPROTO
op_fildll_FT0_A0(void)
1713 #ifdef USE_FP_CONVERT
1714 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1715 FT0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1717 FT0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1724 void OPPROTO
op_flds_ST0_A0(void)
1726 #ifdef USE_FP_CONVERT
1727 FP_CONVERT
.i32
= ldl((void *)A0
);
1730 ST0
= ldfl((void *)A0
);
1734 void OPPROTO
op_fldl_ST0_A0(void)
1736 #ifdef USE_FP_CONVERT
1737 FP_CONVERT
.i64
= ldq((void *)A0
);
1740 ST0
= ldfq((void *)A0
);
1744 #ifdef USE_X86LDOUBLE
1745 void OPPROTO
op_fldt_ST0_A0(void)
1747 ST0
= *(long double *)A0
;
1750 void helper_fldt_ST0_A0(void)
1752 CPU86_LDoubleU temp
;
1755 upper
= lduw((uint8_t *)A0
+ 8);
1756 /* XXX: handle overflow ? */
1757 e
= (upper
& 0x7fff) - 16383 + EXPBIAS
; /* exponent */
1758 e
|= (upper
>> 4) & 0x800; /* sign */
1759 temp
.ll
= ((ldq((void *)A0
) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e
<< 52);
1763 void OPPROTO
op_fldt_ST0_A0(void)
1765 helper_fldt_ST0_A0();
1769 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1770 #ifdef USE_INT_TO_FLOAT_HELPERS
1772 void helper_fild_ST0_A0(void)
1774 ST0
= (CPU86_LDouble
)ldsw((void *)A0
);
1777 void helper_fildl_ST0_A0(void)
1779 ST0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1782 void helper_fildll_ST0_A0(void)
1784 ST0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1787 void OPPROTO
op_fild_ST0_A0(void)
1789 helper_fild_ST0_A0();
1792 void OPPROTO
op_fildl_ST0_A0(void)
1794 helper_fildl_ST0_A0();
1797 void OPPROTO
op_fildll_ST0_A0(void)
1799 helper_fildll_ST0_A0();
1804 void OPPROTO
op_fild_ST0_A0(void)
1806 #ifdef USE_FP_CONVERT
1807 FP_CONVERT
.i32
= ldsw((void *)A0
);
1808 ST0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1810 ST0
= (CPU86_LDouble
)ldsw((void *)A0
);
1814 void OPPROTO
op_fildl_ST0_A0(void)
1816 #ifdef USE_FP_CONVERT
1817 FP_CONVERT
.i32
= (int32_t) ldl((void *)A0
);
1818 ST0
= (CPU86_LDouble
)FP_CONVERT
.i32
;
1820 ST0
= (CPU86_LDouble
)((int32_t)ldl((void *)A0
));
1824 void OPPROTO
op_fildll_ST0_A0(void)
1826 #ifdef USE_FP_CONVERT
1827 FP_CONVERT
.i64
= (int64_t) ldq((void *)A0
);
1828 ST0
= (CPU86_LDouble
)FP_CONVERT
.i64
;
1830 ST0
= (CPU86_LDouble
)((int64_t)ldq((void *)A0
));
1838 void OPPROTO
op_fsts_ST0_A0(void)
1840 #ifdef USE_FP_CONVERT
1842 stfl((void *)A0
, FP_CONVERT
.f
);
1844 stfl((void *)A0
, (float)ST0
);
1848 void OPPROTO
op_fstl_ST0_A0(void)
1850 stfq((void *)A0
, (double)ST0
);
1853 #ifdef USE_X86LDOUBLE
1854 void OPPROTO
op_fstt_ST0_A0(void)
1856 *(long double *)A0
= ST0
;
1859 void helper_fstt_ST0_A0(void)
1861 CPU86_LDoubleU temp
;
1865 stq((void *)A0
, (MANTD(temp
) << 11) | (1LL << 63));
1866 /* exponent + sign */
1867 e
= EXPD(temp
) - EXPBIAS
+ 16383;
1868 e
|= SIGND(temp
) >> 16;
1869 stw((uint8_t *)A0
+ 8, e
);
1872 void OPPROTO
op_fstt_ST0_A0(void)
1874 helper_fstt_ST0_A0();
1878 void OPPROTO
op_fist_ST0_A0(void)
1880 #if defined(__sparc__) && !defined(__sparc_v9__)
1881 register CPU86_LDouble d
asm("o0");
1889 stw((void *)A0
, val
);
1892 void OPPROTO
op_fistl_ST0_A0(void)
1894 #if defined(__sparc__) && !defined(__sparc_v9__)
1895 register CPU86_LDouble d
asm("o0");
1903 stl((void *)A0
, val
);
1906 void OPPROTO
op_fistll_ST0_A0(void)
1908 #if defined(__sparc__) && !defined(__sparc_v9__)
1909 register CPU86_LDouble d
asm("o0");
1917 stq((void *)A0
, val
);
1922 #define MUL10(iv) ( iv + iv + (iv << 3) )
1924 void helper_fbld_ST0_A0(void)
1927 CPU86_LDouble fpsrcop
;
1931 /* in this code, seg/m32i will be used as temporary ptr/int */
1932 seg
= (uint8_t *)A0
+ 8;
1934 /* XXX: raise exception */
1938 /* XXX: raise exception */
1939 if ((v
& 0xf0) != 0)
1941 m32i
= v
; /* <-- d14 */
1943 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d13 */
1944 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d12 */
1946 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d11 */
1947 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d10 */
1949 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d9 */
1950 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d8 */
1951 fpsrcop
= ((CPU86_LDouble
)m32i
) * 100000000.0;
1954 m32i
= (v
>> 4); /* <-- d7 */
1955 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d6 */
1957 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d5 */
1958 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d4 */
1960 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d3 */
1961 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d2 */
1963 m32i
= MUL10(m32i
) + (v
>> 4); /* <-- val * 10 + d1 */
1964 m32i
= MUL10(m32i
) + (v
& 0xf); /* <-- val * 10 + d0 */
1965 fpsrcop
+= ((CPU86_LDouble
)m32i
);
1966 if ( ldub(seg
+9) & 0x80 )
1971 void OPPROTO
op_fbld_ST0_A0(void)
1973 helper_fbld_ST0_A0();
1976 void helper_fbst_ST0_A0(void)
1978 CPU86_LDouble fptemp
;
1979 CPU86_LDouble fpsrcop
;
1981 uint8_t *mem_ref
, *mem_end
;
1983 fpsrcop
= rint(ST0
);
1984 mem_ref
= (uint8_t *)A0
;
1985 mem_end
= mem_ref
+ 8;
1986 if ( fpsrcop
< 0.0 ) {
1987 stw(mem_end
, 0x8000);
1990 stw(mem_end
, 0x0000);
1992 while (mem_ref
< mem_end
) {
1995 fptemp
= floor(fpsrcop
/10.0);
1996 v
= ((int)(fpsrcop
- fptemp
*10.0));
1997 if (fptemp
== 0.0) {
2002 fptemp
= floor(fpsrcop
/10.0);
2003 v
|= (((int)(fpsrcop
- fptemp
*10.0)) << 4);
2007 while (mem_ref
< mem_end
) {
2012 void OPPROTO
op_fbst_ST0_A0(void)
2014 helper_fbst_ST0_A0();
2019 static inline void fpush(void)
2021 env
->fpstt
= (env
->fpstt
- 1) & 7;
2022 env
->fptags
[env
->fpstt
] = 0; /* validate stack entry */
2025 static inline void fpop(void)
2027 env
->fptags
[env
->fpstt
] = 1; /* invvalidate stack entry */
2028 env
->fpstt
= (env
->fpstt
+ 1) & 7;
2031 void OPPROTO
op_fpush(void)
2036 void OPPROTO
op_fpop(void)
2041 void OPPROTO
op_fdecstp(void)
2043 env
->fpstt
= (env
->fpstt
- 1) & 7;
2044 env
->fpus
&= (~0x4700);
2047 void OPPROTO
op_fincstp(void)
2049 env
->fpstt
= (env
->fpstt
+ 1) & 7;
2050 env
->fpus
&= (~0x4700);
2053 void OPPROTO
op_fmov_ST0_FT0(void)
2058 void OPPROTO
op_fmov_FT0_STN(void)
2063 void OPPROTO
op_fmov_ST0_STN(void)
2068 void OPPROTO
op_fmov_STN_ST0(void)
2073 void OPPROTO
op_fxchg_ST0_STN(void)
2081 /* FPU operations */
2083 /* XXX: handle nans */
2084 void OPPROTO
op_fcom_ST0_FT0(void)
2086 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
2088 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
2089 else if (ST0
== FT0
)
2090 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
2094 /* XXX: handle nans */
2095 void OPPROTO
op_fucom_ST0_FT0(void)
2097 env
->fpus
&= (~0x4500); /* (C3,C2,C0) <-- 000 */
2099 env
->fpus
|= 0x100; /* (C3,C2,C0) <-- 001 */
2100 else if (ST0
== FT0
)
2101 env
->fpus
|= 0x4000; /* (C3,C2,C0) <-- 100 */
2105 void OPPROTO
op_fadd_ST0_FT0(void)
2110 void OPPROTO
op_fmul_ST0_FT0(void)
2115 void OPPROTO
op_fsub_ST0_FT0(void)
2120 void OPPROTO
op_fsubr_ST0_FT0(void)
2125 void OPPROTO
op_fdiv_ST0_FT0(void)
2130 void OPPROTO
op_fdivr_ST0_FT0(void)
2135 /* fp operations between STN and ST0 */
2137 void OPPROTO
op_fadd_STN_ST0(void)
2142 void OPPROTO
op_fmul_STN_ST0(void)
2147 void OPPROTO
op_fsub_STN_ST0(void)
2152 void OPPROTO
op_fsubr_STN_ST0(void)
2159 void OPPROTO
op_fdiv_STN_ST0(void)
2164 void OPPROTO
op_fdivr_STN_ST0(void)
2171 /* misc FPU operations */
2172 void OPPROTO
op_fchs_ST0(void)
2177 void OPPROTO
op_fabs_ST0(void)
2182 void helper_fxam_ST0(void)
2184 CPU86_LDoubleU temp
;
2189 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2191 env
->fpus
|= 0x200; /* C1 <-- 1 */
2193 expdif
= EXPD(temp
);
2194 if (expdif
== MAXEXPD
) {
2195 if (MANTD(temp
) == 0)
2196 env
->fpus
|= 0x500 /*Infinity*/;
2198 env
->fpus
|= 0x100 /*NaN*/;
2199 } else if (expdif
== 0) {
2200 if (MANTD(temp
) == 0)
2201 env
->fpus
|= 0x4000 /*Zero*/;
2203 env
->fpus
|= 0x4400 /*Denormal*/;
2209 void OPPROTO
op_fxam_ST0(void)
2214 void OPPROTO
op_fld1_ST0(void)
2216 ST0
= *(CPU86_LDouble
*)&f15rk
[1];
2219 void OPPROTO
op_fldl2t_ST0(void)
2221 ST0
= *(CPU86_LDouble
*)&f15rk
[6];
2224 void OPPROTO
op_fldl2e_ST0(void)
2226 ST0
= *(CPU86_LDouble
*)&f15rk
[5];
2229 void OPPROTO
op_fldpi_ST0(void)
2231 ST0
= *(CPU86_LDouble
*)&f15rk
[2];
2234 void OPPROTO
op_fldlg2_ST0(void)
2236 ST0
= *(CPU86_LDouble
*)&f15rk
[3];
2239 void OPPROTO
op_fldln2_ST0(void)
2241 ST0
= *(CPU86_LDouble
*)&f15rk
[4];
2244 void OPPROTO
op_fldz_ST0(void)
2246 ST0
= *(CPU86_LDouble
*)&f15rk
[0];
2249 void OPPROTO
op_fldz_FT0(void)
2251 ST0
= *(CPU86_LDouble
*)&f15rk
[0];
2254 void helper_f2xm1(void)
2256 ST0
= pow(2.0,ST0
) - 1.0;
2259 void helper_fyl2x(void)
2261 CPU86_LDouble fptemp
;
2265 fptemp
= log(fptemp
)/log(2.0); /* log2(ST) */
2269 env
->fpus
&= (~0x4700);
2274 void helper_fptan(void)
2276 CPU86_LDouble fptemp
;
2279 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2285 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2286 /* the above code is for |arg| < 2**52 only */
2290 void helper_fpatan(void)
2292 CPU86_LDouble fptemp
, fpsrcop
;
2296 ST1
= atan2(fpsrcop
,fptemp
);
2300 void helper_fxtract(void)
2302 CPU86_LDoubleU temp
;
2303 unsigned int expdif
;
2306 expdif
= EXPD(temp
) - EXPBIAS
;
2307 /*DP exponent bias*/
2314 void helper_fprem1(void)
2316 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2317 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2323 fpsrcop1
.d
= fpsrcop
;
2325 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2327 dblq
= fpsrcop
/ fptemp
;
2328 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2329 ST0
= fpsrcop
- fptemp
*dblq
;
2330 q
= (int)dblq
; /* cutting off top bits is assumed here */
2331 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2332 /* (C0,C1,C3) <-- (q2,q1,q0) */
2333 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2334 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2335 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2337 env
->fpus
|= 0x400; /* C2 <-- 1 */
2338 fptemp
= pow(2.0, expdif
-50);
2339 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2340 /* fpsrcop = integer obtained by rounding to the nearest */
2341 fpsrcop
= (fpsrcop
-floor(fpsrcop
) < ceil(fpsrcop
)-fpsrcop
)?
2342 floor(fpsrcop
): ceil(fpsrcop
);
2343 ST0
-= (ST1
* fpsrcop
* fptemp
);
2347 void helper_fprem(void)
2349 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2350 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2356 fpsrcop1
.d
= fpsrcop
;
2358 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2359 if ( expdif
< 53 ) {
2360 dblq
= fpsrcop
/ fptemp
;
2361 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2362 ST0
= fpsrcop
- fptemp
*dblq
;
2363 q
= (int)dblq
; /* cutting off top bits is assumed here */
2364 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2365 /* (C0,C1,C3) <-- (q2,q1,q0) */
2366 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2367 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2368 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2370 env
->fpus
|= 0x400; /* C2 <-- 1 */
2371 fptemp
= pow(2.0, expdif
-50);
2372 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2373 /* fpsrcop = integer obtained by chopping */
2374 fpsrcop
= (fpsrcop
< 0.0)?
2375 -(floor(fabs(fpsrcop
))): floor(fpsrcop
);
2376 ST0
-= (ST1
* fpsrcop
* fptemp
);
2380 void helper_fyl2xp1(void)
2382 CPU86_LDouble fptemp
;
2385 if ((fptemp
+1.0)>0.0) {
2386 fptemp
= log(fptemp
+1.0) / log(2.0); /* log2(ST+1.0) */
2390 env
->fpus
&= (~0x4700);
2395 void helper_fsqrt(void)
2397 CPU86_LDouble fptemp
;
2401 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2407 void helper_fsincos(void)
2409 CPU86_LDouble fptemp
;
2412 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2418 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2419 /* the above code is for |arg| < 2**63 only */
2423 void helper_frndint(void)
2428 void helper_fscale(void)
2430 CPU86_LDouble fpsrcop
, fptemp
;
2433 fptemp
= pow(fpsrcop
,ST1
);
2437 void helper_fsin(void)
2439 CPU86_LDouble fptemp
;
2442 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2446 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2447 /* the above code is for |arg| < 2**53 only */
2451 void helper_fcos(void)
2453 CPU86_LDouble fptemp
;
2456 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2460 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2461 /* the above code is for |arg5 < 2**63 only */
2465 /* associated heplers to reduce generated code length and to simplify
2466 relocation (FP constants are usually stored in .rodata section) */
2468 void OPPROTO
op_f2xm1(void)
2473 void OPPROTO
op_fyl2x(void)
2478 void OPPROTO
op_fptan(void)
2483 void OPPROTO
op_fpatan(void)
2488 void OPPROTO
op_fxtract(void)
2493 void OPPROTO
op_fprem1(void)
2499 void OPPROTO
op_fprem(void)
2504 void OPPROTO
op_fyl2xp1(void)
2509 void OPPROTO
op_fsqrt(void)
2514 void OPPROTO
op_fsincos(void)
2519 void OPPROTO
op_frndint(void)
2524 void OPPROTO
op_fscale(void)
2529 void OPPROTO
op_fsin(void)
2534 void OPPROTO
op_fcos(void)
2539 void OPPROTO
op_fnstsw_A0(void)
2542 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2543 stw((void *)A0
, fpus
);
2546 void OPPROTO
op_fnstsw_EAX(void)
2549 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2550 EAX
= (EAX
& 0xffff0000) | fpus
;
2553 void OPPROTO
op_fnstcw_A0(void)
2555 stw((void *)A0
, env
->fpuc
);
2558 void OPPROTO
op_fldcw_A0(void)
2561 env
->fpuc
= lduw((void *)A0
);
2562 /* set rounding mode */
2563 switch(env
->fpuc
& RC_MASK
) {
2566 rnd_type
= FE_TONEAREST
;
2569 rnd_type
= FE_DOWNWARD
;
2572 rnd_type
= FE_UPWARD
;
2575 rnd_type
= FE_TOWARDZERO
;
2578 fesetround(rnd_type
);
2581 void OPPROTO
op_fclex(void)
2583 env
->fpus
&= 0x7f00;
2586 void OPPROTO
op_fninit(void)
2601 /* threading support */
2602 void OPPROTO
op_lock(void)
2607 void OPPROTO
op_unlock(void)