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)
620 raise_exception(EXCP0D_GPF);
623 void OPPROTO op_int3(void)
626 raise_exception(EXCP03_INT3);
629 void OPPROTO op_into(void)
632 eflags = cc_table[CC_OP].compute_all();
634 raise_exception(EXCP04_INTO);
638 /* XXX: add IOPL/CPL tests */
639 void OPPROTO op_cli(void)
641 raise_exception(EXCP0D_GPF);
644 /* XXX: add IOPL/CPL tests */
645 void OPPROTO op_sti(void)
647 raise_exception(EXCP0D_GPF);
650 /* vm86plus instructions */
652 void OPPROTO op_cli_vm(void)
654 env->eflags &= ~VIF_MASK;
657 void OPPROTO op_sti_vm(void)
659 env->eflags |= VIF_MASK;
660 if (env->eflags & VIP_MASK) {
662 raise_exception(EXCP0D_GPF);
667 void OPPROTO op_boundw(void)
670 low = ldsw((uint8_t *)A0);
671 high = ldsw((uint8_t *)A0 + 2);
673 if (v < low || v > high)
674 raise_exception(EXCP05_BOUND);
678 void OPPROTO op_boundl(void)
681 low = ldl((uint8_t *)A0);
682 high = ldl((uint8_t *)A0 + 4);
684 if (v < low || v > high)
685 raise_exception(EXCP05_BOUND);
689 void OPPROTO op_cmpxchg8b(void)
694 eflags = cc_table[CC_OP].compute_all();
695 d = ldq((uint8_t *)A0);
696 if (d == (((uint64_t)EDX << 32) | EAX)) {
697 stq((uint8_t *)A0, ((uint64_t)ECX << 32) | EBX);
713 #include "ops_template.h"
717 #include "ops_template.h"
721 #include "ops_template.h"
726 void OPPROTO op_movsbl_T0_T0(void)
731 void OPPROTO op_movzbl_T0_T0(void)
736 void OPPROTO op_movswl_T0_T0(void)
741 void OPPROTO op_movzwl_T0_T0(void)
746 void OPPROTO op_movswl_EAX_AX(void)
751 void OPPROTO op_movsbw_AX_AL(void)
753 EAX = (EAX & 0xffff0000) | ((int8_t)EAX & 0xffff);
756 void OPPROTO op_movslq_EDX_EAX(void)
758 EDX = (int32_t)EAX >> 31;
761 void OPPROTO op_movswl_DX_AX(void)
763 EDX = (EDX & 0xffff0000) | (((int16_t)EAX >> 15) & 0xffff);
768 void op_pushl_T0(void)
772 stl((void *)offset, T0);
773 /* modify ESP after to handle exceptions correctly */
777 void op_pushw_T0(void)
781 stw((void *)offset, T0);
782 /* modify ESP after to handle exceptions correctly */
786 void op_pushl_ss32_T0(void)
790 stl(env->seg_cache[R_SS].base + offset, T0);
791 /* modify ESP after to handle exceptions correctly */
795 void op_pushw_ss32_T0(void)
799 stw(env->seg_cache[R_SS].base + offset, T0);
800 /* modify ESP after to handle exceptions correctly */
804 void op_pushl_ss16_T0(void)
807 offset = (ESP - 4) & 0xffff;
808 stl(env->seg_cache[R_SS].base + offset, T0);
809 /* modify ESP after to handle exceptions correctly */
810 ESP = (ESP & ~0xffff) | offset;
813 void op_pushw_ss16_T0(void)
816 offset = (ESP - 2) & 0xffff;
817 stw(env->seg_cache[R_SS].base + offset, T0);
818 /* modify ESP after to handle exceptions correctly */
819 ESP = (ESP & ~0xffff) | offset;
822 /* NOTE: ESP update is done after */
823 void op_popl_T0(void)
825 T0 = ldl((void *)ESP);
828 void op_popw_T0(void)
830 T0 = lduw((void *)ESP);
833 void op_popl_ss32_T0(void)
835 T0 = ldl(env->seg_cache[R_SS].base + ESP);
838 void op_popw_ss32_T0(void)
840 T0 = lduw(env->seg_cache[R_SS].base + ESP);
843 void op_popl_ss16_T0(void)
845 T0 = ldl(env->seg_cache[R_SS].base + (ESP & 0xffff));
848 void op_popw_ss16_T0(void)
850 T0 = lduw(env->seg_cache[R_SS].base + (ESP & 0xffff));
853 void op_addl_ESP_4(void)
858 void op_addl_ESP_2(void)
863 void op_addw_ESP_4(void)
865 ESP = (ESP & ~0xffff) | ((ESP + 4) & 0xffff);
868 void op_addw_ESP_2(void)
870 ESP = (ESP & ~0xffff) | ((ESP + 2) & 0xffff);
873 void op_addl_ESP_im(void)
878 void op_addw_ESP_im(void)
880 ESP = (ESP & ~0xffff) | ((ESP + PARAM1) & 0xffff);
888 void OPPROTO op_rdtsc(void)
892 asm("rdtsc" : "=A" (val));
894 /* better than nothing: the time increases */
901 /* We simulate a pre-MMX pentium as in valgrind */
902 #define CPUID_FP87 (1 << 0)
903 #define CPUID_VME (1 << 1)
904 #define CPUID_DE (1 << 2)
905 #define CPUID_PSE (1 << 3)
906 #define CPUID_TSC (1 << 4)
907 #define CPUID_MSR (1 << 5)
908 #define CPUID_PAE (1 << 6)
909 #define CPUID_MCE (1 << 7)
910 #define CPUID_CX8 (1 << 8)
911 #define CPUID_APIC (1 << 9)
912 #define CPUID_SEP (1 << 11) /* sysenter/sysexit */
913 #define CPUID_MTRR (1 << 12)
914 #define CPUID_PGE (1 << 13)
915 #define CPUID_MCA (1 << 14)
916 #define CPUID_CMOV (1 << 15)
918 #define CPUID_MMX (1 << 23)
919 #define CPUID_FXSR (1 << 24)
920 #define CPUID_SSE (1 << 25)
921 #define CPUID_SSE2 (1 << 26)
923 void helper_cpuid(void)
926 EAX = 1; /* max EAX index supported */
935 EDX = CPUID_FP87 | CPUID_VME | CPUID_DE | CPUID_PSE |
936 CPUID_TSC | CPUID_MSR | CPUID_MCE |
941 void OPPROTO op_cpuid(void)
949 void OPPROTO op_aam(void)
956 EAX = (EAX & ~0xffff) | al | (ah << 8);
960 void OPPROTO op_aad(void)
965 ah = (EAX >> 8) & 0xff;
966 al = ((ah * base) + al) & 0xff;
967 EAX = (EAX & ~0xffff) | al;
971 void OPPROTO op_aaa(void)
977 eflags = cc_table[CC_OP].compute_all();
980 ah = (EAX >> 8) & 0xff;
982 icarry = (al > 0xf9);
983 if (((al & 0x0f) > 9 ) || af) {
984 al = (al + 6) & 0x0f;
985 ah = (ah + 1 + icarry) & 0xff;
986 eflags |= CC_C | CC_A;
988 eflags &= ~(CC_C | CC_A);
991 EAX = (EAX & ~0xffff) | al | (ah << 8);
995 void OPPROTO op_aas(void)
1001 eflags = cc_table[CC_OP].compute_all();
1004 ah = (EAX >> 8) & 0xff;
1007 if (((al & 0x0f) > 9 ) || af) {
1008 al = (al - 6) & 0x0f;
1009 ah = (ah - 1 - icarry) & 0xff;
1010 eflags |= CC_C | CC_A;
1012 eflags &= ~(CC_C | CC_A);
1015 EAX = (EAX & ~0xffff) | al | (ah << 8);
1019 void OPPROTO op_daa(void)
1024 eflags = cc_table[CC_OP].compute_all();
1030 if (((al & 0x0f) > 9 ) || af) {
1031 al = (al + 6) & 0xff;
1034 if ((al > 0x9f) || cf) {
1035 al = (al + 0x60) & 0xff;
1038 EAX = (EAX & ~0xff) | al;
1039 /* well, speed is not an issue here, so we compute the flags by hand */
1040 eflags |= (al == 0) << 6; /* zf */
1041 eflags |= parity_table[al]; /* pf */
1042 eflags |= (al & 0x80); /* sf */
1046 void OPPROTO op_das(void)
1048 int al, al1, af, cf;
1051 eflags = cc_table[CC_OP].compute_all();
1058 if (((al & 0x0f) > 9 ) || af) {
1062 al = (al - 6) & 0xff;
1064 if ((al1 > 0x99) || cf) {
1065 al = (al - 0x60) & 0xff;
1068 EAX = (EAX & ~0xff) | al;
1069 /* well, speed is not an issue here, so we compute the flags by hand */
1070 eflags |= (al == 0) << 6; /* zf */
1071 eflags |= parity_table[al]; /* pf */
1072 eflags |= (al & 0x80); /* sf */
1076 /* segment handling */
1078 /* XXX: use static VM86 information */
1079 void load_seg(int seg_reg, int selector)
1082 SegmentDescriptorTable *dt;
1087 env->segs[seg_reg] = selector;
1088 sc = &env->seg_cache[seg_reg];
1089 if (env->eflags & VM_MASK) {
1090 sc->base = (void *)(selector << 4);
1098 index = selector & ~7;
1099 if ((index + 7) > dt->limit)
1100 raise_exception(EXCP0D_GPF);
1101 ptr = dt->base + index;
1104 sc->base = (void *)((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
1105 sc->limit = (e1 & 0xffff) | (e2 & 0x000f0000);
1107 sc->limit = (sc->limit << 12) | 0xfff;
1108 sc->seg_32bit = (e2 >> 22) & 1;
1110 fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
1111 selector, (unsigned long)sc->base, sc->limit, sc->seg_32bit);
1116 void OPPROTO op_movl_seg_T0(void)
1118 load_seg(PARAM1, T0 & 0xffff);
1121 void OPPROTO op_movl_T0_seg(void)
1123 T0 = env->segs[PARAM1];
1126 void OPPROTO op_movl_A0_seg(void)
1128 A0 = *(unsigned long *)((char *)env + PARAM1);
1131 void OPPROTO op_addl_A0_seg(void)
1133 A0 += *(unsigned long *)((char *)env + PARAM1);
1136 /* flags handling */
1138 /* slow jumps cases (compute x86 flags) */
1139 void OPPROTO op_jo_cc(void)
1142 eflags = cc_table[CC_OP].compute_all();
1150 void OPPROTO op_jb_cc(void)
1152 if (cc_table[CC_OP].compute_c())
1159 void OPPROTO op_jz_cc(void)
1162 eflags = cc_table[CC_OP].compute_all();
1170 void OPPROTO op_jbe_cc(void)
1173 eflags = cc_table[CC_OP].compute_all();
1174 if (eflags & (CC_Z | CC_C))
1181 void OPPROTO op_js_cc(void)
1184 eflags = cc_table[CC_OP].compute_all();
1192 void OPPROTO op_jp_cc(void)
1195 eflags = cc_table[CC_OP].compute_all();
1203 void OPPROTO op_jl_cc(void)
1206 eflags = cc_table[CC_OP].compute_all();
1207 if ((eflags ^ (eflags >> 4)) & 0x80)
1214 void OPPROTO op_jle_cc(void)
1217 eflags = cc_table[CC_OP].compute_all();
1218 if (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z))
1225 /* slow set cases (compute x86 flags) */
1226 void OPPROTO op_seto_T0_cc(void)
1229 eflags = cc_table[CC_OP].compute_all();
1230 T0 = (eflags >> 11) & 1;
1233 void OPPROTO op_setb_T0_cc(void)
1235 T0 = cc_table[CC_OP].compute_c();
1238 void OPPROTO op_setz_T0_cc(void)
1241 eflags = cc_table[CC_OP].compute_all();
1242 T0 = (eflags >> 6) & 1;
1245 void OPPROTO op_setbe_T0_cc(void)
1248 eflags = cc_table[CC_OP].compute_all();
1249 T0 = (eflags & (CC_Z | CC_C)) != 0;
1252 void OPPROTO op_sets_T0_cc(void)
1255 eflags = cc_table[CC_OP].compute_all();
1256 T0 = (eflags >> 7) & 1;
1259 void OPPROTO op_setp_T0_cc(void)
1262 eflags = cc_table[CC_OP].compute_all();
1263 T0 = (eflags >> 2) & 1;
1266 void OPPROTO op_setl_T0_cc(void)
1269 eflags = cc_table[CC_OP].compute_all();
1270 T0 = ((eflags ^ (eflags >> 4)) >> 7) & 1;
1273 void OPPROTO op_setle_T0_cc(void)
1276 eflags = cc_table[CC_OP].compute_all();
1277 T0 = (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z)) != 0;
1280 void OPPROTO op_xor_T0_1(void)
1285 void OPPROTO op_set_cc_op(void)
1290 #define FL_UPDATE_MASK32 (TF_MASK | AC_MASK | ID_MASK)
1291 #define FL_UPDATE_MASK16 (TF_MASK)
1293 void OPPROTO op_movl_eflags_T0(void)
1297 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1298 DF = 1 - (2 * ((eflags >> 10) & 1));
1299 /* we also update some system flags as in user mode */
1300 env->eflags = (env->eflags & ~FL_UPDATE_MASK32) | (eflags & FL_UPDATE_MASK32);
1303 void OPPROTO op_movw_eflags_T0(void)
1307 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1308 DF = 1 - (2 * ((eflags >> 10) & 1));
1309 /* we also update some system flags as in user mode */
1310 env->eflags = (env->eflags & ~FL_UPDATE_MASK16) | (eflags & FL_UPDATE_MASK16);
1314 void OPPROTO op_movw_eflags_T0_vm(void)
1318 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1319 DF = 1 - (2 * ((eflags >> 10) & 1));
1320 /* we also update some system flags as in user mode */
1321 env->eflags = (env->eflags & ~(FL_UPDATE_MASK16 | VIF_MASK)) |
1322 (eflags & FL_UPDATE_MASK16);
1323 if (eflags & IF_MASK) {
1324 env->eflags |= VIF_MASK;
1325 if (env->eflags & VIP_MASK) {
1327 raise_exception(EXCP0D_GPF);
1333 void OPPROTO op_movl_eflags_T0_vm(void)
1337 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1338 DF = 1 - (2 * ((eflags >> 10) & 1));
1339 /* we also update some system flags as in user mode */
1340 env->eflags = (env->eflags & ~(FL_UPDATE_MASK32 | VIF_MASK)) |
1341 (eflags & FL_UPDATE_MASK32);
1342 if (eflags & IF_MASK) {
1343 env->eflags |= VIF_MASK;
1344 if (env->eflags & VIP_MASK) {
1346 raise_exception(EXCP0D_GPF);
1352 /* XXX: compute only O flag */
1353 void OPPROTO op_movb_eflags_T0(void)
1356 of = cc_table[CC_OP].compute_all() & CC_O;
1357 CC_SRC = (T0 & (CC_S | CC_Z | CC_A | CC_P | CC_C)) | of;
1360 void OPPROTO op_movl_T0_eflags(void)
1363 eflags = cc_table[CC_OP].compute_all();
1364 eflags |= (DF & DF_MASK);
1365 eflags |= env->eflags & ~(VM_MASK | RF_MASK);
1370 void OPPROTO op_movl_T0_eflags_vm(void)
1373 eflags = cc_table[CC_OP].compute_all();
1374 eflags |= (DF & DF_MASK);
1375 eflags |= env->eflags & ~(VM_MASK | RF_MASK | IF_MASK);
1376 if (env->eflags & VIF_MASK)
1381 void OPPROTO op_cld(void)
1386 void OPPROTO op_std(void)
1391 void OPPROTO op_clc(void)
1394 eflags = cc_table[CC_OP].compute_all();
1399 void OPPROTO op_stc(void)
1402 eflags = cc_table[CC_OP].compute_all();
1407 void OPPROTO op_cmc(void)
1410 eflags = cc_table[CC_OP].compute_all();
1415 void OPPROTO op_salc(void)
1418 cf = cc_table[CC_OP].compute_c();
1419 EAX = (EAX & ~0xff) | ((-cf) & 0xff);
1422 static int compute_all_eflags(void)
1427 static int compute_c_eflags(void)
1429 return CC_SRC & CC_C;
1432 static int compute_c_mul(void)
1439 static int compute_all_mul(void)
1441 int cf, pf, af, zf, sf, of;
1443 pf = 0; /* undefined */
1444 af = 0; /* undefined */
1445 zf = 0; /* undefined */
1446 sf = 0; /* undefined */
1448 return cf | pf | af | zf | sf | of;
1451 CCTable cc_table[CC_OP_NB] = {
1452 [CC_OP_DYNAMIC] = { /* should never happen */ },
1454 [CC_OP_EFLAGS] = { compute_all_eflags, compute_c_eflags },
1456 [CC_OP_MUL] = { compute_all_mul, compute_c_mul },
1458 [CC_OP_ADDB] = { compute_all_addb, compute_c_addb },
1459 [CC_OP_ADDW] = { compute_all_addw, compute_c_addw },
1460 [CC_OP_ADDL] = { compute_all_addl, compute_c_addl },
1462 [CC_OP_ADCB] = { compute_all_adcb, compute_c_adcb },
1463 [CC_OP_ADCW] = { compute_all_adcw, compute_c_adcw },
1464 [CC_OP_ADCL] = { compute_all_adcl, compute_c_adcl },
1466 [CC_OP_SUBB] = { compute_all_subb, compute_c_subb },
1467 [CC_OP_SUBW] = { compute_all_subw, compute_c_subw },
1468 [CC_OP_SUBL] = { compute_all_subl, compute_c_subl },
1470 [CC_OP_SBBB] = { compute_all_sbbb, compute_c_sbbb },
1471 [CC_OP_SBBW] = { compute_all_sbbw, compute_c_sbbw },
1472 [CC_OP_SBBL] = { compute_all_sbbl, compute_c_sbbl },
1474 [CC_OP_LOGICB] = { compute_all_logicb, compute_c_logicb },
1475 [CC_OP_LOGICW] = { compute_all_logicw, compute_c_logicw },
1476 [CC_OP_LOGICL] = { compute_all_logicl, compute_c_logicl },
1478 [CC_OP_INCB] = { compute_all_incb, compute_c_incl },
1479 [CC_OP_INCW] = { compute_all_incw, compute_c_incl },
1480 [CC_OP_INCL] = { compute_all_incl, compute_c_incl },
1482 [CC_OP_DECB] = { compute_all_decb, compute_c_incl },
1483 [CC_OP_DECW] = { compute_all_decw, compute_c_incl },
1484 [CC_OP_DECL] = { compute_all_decl, compute_c_incl },
1486 [CC_OP_SHLB] = { compute_all_shlb, compute_c_shll },
1487 [CC_OP_SHLW] = { compute_all_shlw, compute_c_shll },
1488 [CC_OP_SHLL] = { compute_all_shll, compute_c_shll },
1490 [CC_OP_SARB] = { compute_all_sarb, compute_c_shll },
1491 [CC_OP_SARW] = { compute_all_sarw, compute_c_shll },
1492 [CC_OP_SARL] = { compute_all_sarl, compute_c_shll },
1495 /* floating point support. Some of the code for complicated x87
1496 functions comes from the LGPL'ed x86 emulator found in the Willows
1497 TWIN windows emulator. */
1499 #ifdef USE_X86LDOUBLE
1500 /* use long double functions */
1501 #define lrint lrintl
1502 #define llrint llrintl
1510 #define atan2 atan2l
1511 #define floor floorl
1516 extern int lrint(CPU86_LDouble x);
1517 extern int64_t llrint(CPU86_LDouble x);
1518 extern CPU86_LDouble fabs(CPU86_LDouble x);
1519 extern CPU86_LDouble sin(CPU86_LDouble x);
1520 extern CPU86_LDouble cos(CPU86_LDouble x);
1521 extern CPU86_LDouble sqrt(CPU86_LDouble x);
1522 extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
1523 extern CPU86_LDouble log(CPU86_LDouble x);
1524 extern CPU86_LDouble tan(CPU86_LDouble x);
1525 extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
1526 extern CPU86_LDouble floor(CPU86_LDouble x);
1527 extern CPU86_LDouble ceil(CPU86_LDouble x);
1528 extern CPU86_LDouble rint(CPU86_LDouble x);
1530 #if defined(__powerpc__)
1531 extern CPU86_LDouble copysign(CPU86_LDouble, CPU86_LDouble);
1533 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1534 double qemu_rint(double x)
1536 double y = 4503599627370496.0;
1547 #define rint qemu_rint
1550 #define RC_MASK 0xc00
1551 #define RC_NEAR 0x000
1552 #define RC_DOWN 0x400
1554 #define RC_CHOP 0xc00
1556 #define MAXTAN 9223372036854775808.0
1558 #ifdef USE_X86LDOUBLE
1564 unsigned long long lower;
1565 unsigned short upper;
1569 /* the following deal with x86 long double-precision numbers */
1570 #define MAXEXPD 0x7fff
1571 #define EXPBIAS 16383
1572 #define EXPD(fp) (fp.l.upper & 0x7fff)
1573 #define SIGND(fp) ((fp.l.upper) & 0x8000)
1574 #define MANTD(fp) (fp.l.lower)
1575 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
1581 #ifndef WORDS_BIGENDIAN
1583 unsigned long lower;
1589 unsigned long lower;
1595 /* the following deal with IEEE double-precision numbers */
1596 #define MAXEXPD 0x7ff
1597 #define EXPBIAS 1023
1598 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
1599 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
1600 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
1601 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
1606 void OPPROTO op_flds_FT0_A0(void)
1608 FT0 = ldfl((void *)A0);
1611 void OPPROTO op_fldl_FT0_A0(void)
1613 FT0 = ldfq((void *)A0);
1616 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1617 #ifdef USE_INT_TO_FLOAT_HELPERS
1619 void helper_fild_FT0_A0(void)
1621 FT0 = (CPU86_LDouble)ldsw((void *)A0);
1624 void helper_fildl_FT0_A0(void)
1626 FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1629 void helper_fildll_FT0_A0(void)
1631 FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1634 void OPPROTO op_fild_FT0_A0(void)
1636 helper_fild_FT0_A0();
1639 void OPPROTO op_fildl_FT0_A0(void)
1641 helper_fildl_FT0_A0();
1644 void OPPROTO op_fildll_FT0_A0(void)
1646 helper_fildll_FT0_A0();
1651 void OPPROTO op_fild_FT0_A0(void)
1653 FT0 = (CPU86_LDouble)ldsw((void *)A0);
1656 void OPPROTO op_fildl_FT0_A0(void)
1658 FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1661 void OPPROTO op_fildll_FT0_A0(void)
1663 FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1669 void OPPROTO op_flds_ST0_A0(void)
1671 ST0 = ldfl((void *)A0);
1674 void OPPROTO op_fldl_ST0_A0(void)
1676 ST0 = ldfq((void *)A0);
1679 #ifdef USE_X86LDOUBLE
1680 void OPPROTO op_fldt_ST0_A0(void)
1682 ST0 = *(long double *)A0;
1685 void helper_fldt_ST0_A0(void)
1687 CPU86_LDoubleU temp;
1690 upper = lduw((uint8_t *)A0 + 8);
1691 /* XXX: handle overflow ? */
1692 e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
1693 e |= (upper >> 4) & 0x800; /* sign */
1694 temp.ll = ((ldq((void *)A0) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e << 52);
1698 void OPPROTO op_fldt_ST0_A0(void)
1700 helper_fldt_ST0_A0();
1704 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1705 #ifdef USE_INT_TO_FLOAT_HELPERS
1707 void helper_fild_ST0_A0(void)
1709 ST0 = (CPU86_LDouble)ldsw((void *)A0);
1712 void helper_fildl_ST0_A0(void)
1714 ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1717 void helper_fildll_ST0_A0(void)
1719 ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1722 void OPPROTO op_fild_ST0_A0(void)
1724 helper_fild_ST0_A0();
1727 void OPPROTO op_fildl_ST0_A0(void)
1729 helper_fildl_ST0_A0();
1732 void OPPROTO op_fildll_ST0_A0(void)
1734 helper_fildll_ST0_A0();
1739 void OPPROTO op_fild_ST0_A0(void)
1741 ST0 = (CPU86_LDouble)ldsw((void *)A0);
1744 void OPPROTO op_fildl_ST0_A0(void)
1746 ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1749 void OPPROTO op_fildll_ST0_A0(void)
1751 ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1758 void OPPROTO op_fsts_ST0_A0(void)
1760 stfl((void *)A0, (float)ST0);
1763 void OPPROTO op_fstl_ST0_A0(void)
1765 stfq((void *)A0, (double)ST0);
1768 #ifdef USE_X86LDOUBLE
1769 void OPPROTO op_fstt_ST0_A0(void)
1771 *(long double *)A0 = ST0;
1774 void helper_fstt_ST0_A0(void)
1776 CPU86_LDoubleU temp;
1780 stq((void *)A0, (MANTD(temp) << 11) | (1LL << 63));
1781 /* exponent + sign */
1782 e = EXPD(temp) - EXPBIAS + 16383;
1783 e |= SIGND(temp) >> 16;
1784 stw((uint8_t *)A0 + 8, e);
1787 void OPPROTO op_fstt_ST0_A0(void)
1789 helper_fstt_ST0_A0();
1793 void OPPROTO op_fist_ST0_A0(void)
1797 stw((void *)A0, val);
1800 void OPPROTO op_fistl_ST0_A0(void)
1804 stl((void *)A0, val);
1807 void OPPROTO op_fistll_ST0_A0(void)
1811 stq((void *)A0, val);
1816 #define MUL10(iv) ( iv + iv + (iv << 3) )
1818 void helper_fbld_ST0_A0(void)
1821 CPU86_LDouble fpsrcop;
1825 /* in this code, seg/m32i will be used as temporary ptr/int */
1826 seg = (uint8_t *)A0 + 8;
1828 /* XXX: raise exception */
1832 /* XXX: raise exception */
1833 if ((v & 0xf0) != 0)
1835 m32i = v; /* <-- d14 */
1837 m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d13 */
1838 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d12 */
1840 m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d11 */
1841 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d10 */
1843 m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d9 */
1844 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d8 */
1845 fpsrcop = ((CPU86_LDouble)m32i) * 100000000.0;
1848 m32i = (v >> 4); /* <-- d7 */
1849 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d6 */
1851 m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d5 */
1852 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d4 */
1854 m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d3 */
1855 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d2 */
1857 m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d1 */
1858 m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d0 */
1859 fpsrcop += ((CPU86_LDouble)m32i);
1860 if ( ldub(seg+9) & 0x80 )
1865 void OPPROTO op_fbld_ST0_A0(void)
1867 helper_fbld_ST0_A0();
1870 void helper_fbst_ST0_A0(void)
1872 CPU86_LDouble fptemp;
1873 CPU86_LDouble fpsrcop;
1875 uint8_t *mem_ref, *mem_end;
1877 fpsrcop = rint(ST0);
1878 mem_ref = (uint8_t *)A0;
1879 mem_end = mem_ref + 8;
1880 if ( fpsrcop < 0.0 ) {
1881 stw(mem_end, 0x8000);
1884 stw(mem_end, 0x0000);
1886 while (mem_ref < mem_end) {
1889 fptemp = floor(fpsrcop/10.0);
1890 v = ((int)(fpsrcop - fptemp*10.0));
1891 if (fptemp == 0.0) {
1896 fptemp = floor(fpsrcop/10.0);
1897 v |= (((int)(fpsrcop - fptemp*10.0)) << 4);
1901 while (mem_ref < mem_end) {
1906 void OPPROTO op_fbst_ST0_A0(void)
1908 helper_fbst_ST0_A0();
1913 static inline void fpush(void)
1915 env->fpstt = (env->fpstt - 1) & 7;
1916 env->fptags[env->fpstt] = 0; /* validate stack entry */
1919 static inline void fpop(void)
1921 env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
1922 env->fpstt = (env->fpstt + 1) & 7;
1925 void OPPROTO op_fpush(void)
1930 void OPPROTO op_fpop(void)
1935 void OPPROTO op_fdecstp(void)
1937 env->fpstt = (env->fpstt - 1) & 7;
1938 env->fpus &= (~0x4700);
1941 void OPPROTO op_fincstp(void)
1943 env->fpstt = (env->fpstt + 1) & 7;
1944 env->fpus &= (~0x4700);
1947 void OPPROTO op_fmov_ST0_FT0(void)
1952 void OPPROTO op_fmov_FT0_STN(void)
1957 void OPPROTO op_fmov_ST0_STN(void)
1962 void OPPROTO op_fmov_STN_ST0(void)
1967 void OPPROTO op_fxchg_ST0_STN(void)
1975 /* FPU operations */
1977 /* XXX: handle nans */
1978 void OPPROTO op_fcom_ST0_FT0(void)
1980 env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */
1982 env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */
1983 else if (ST0 == FT0)
1984 env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */
1988 /* XXX: handle nans */
1989 void OPPROTO op_fucom_ST0_FT0(void)
1991 env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */
1993 env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */
1994 else if (ST0 == FT0)
1995 env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */
1999 void OPPROTO op_fadd_ST0_FT0(void)
2004 void OPPROTO op_fmul_ST0_FT0(void)
2009 void OPPROTO op_fsub_ST0_FT0(void)
2014 void OPPROTO op_fsubr_ST0_FT0(void)
2019 void OPPROTO op_fdiv_ST0_FT0(void)
2024 void OPPROTO op_fdivr_ST0_FT0(void)
2029 /* fp operations between STN and ST0 */
2031 void OPPROTO op_fadd_STN_ST0(void)
2036 void OPPROTO op_fmul_STN_ST0(void)
2041 void OPPROTO op_fsub_STN_ST0(void)
2046 void OPPROTO op_fsubr_STN_ST0(void)
2053 void OPPROTO op_fdiv_STN_ST0(void)
2058 void OPPROTO op_fdivr_STN_ST0(void)
2065 /* misc FPU operations */
2066 void OPPROTO op_fchs_ST0(void)
2071 void OPPROTO op_fabs_ST0(void)
2076 void helper_fxam_ST0(void)
2078 CPU86_LDoubleU temp;
2083 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2085 env->fpus |= 0x200; /* C1 <-- 1 */
2087 expdif = EXPD(temp);
2088 if (expdif == MAXEXPD) {
2089 if (MANTD(temp) == 0)
2090 env->fpus |= 0x500 /*Infinity*/;
2092 env->fpus |= 0x100 /*NaN*/;
2093 } else if (expdif == 0) {
2094 if (MANTD(temp) == 0)
2095 env->fpus |= 0x4000 /*Zero*/;
2097 env->fpus |= 0x4400 /*Denormal*/;
2103 void OPPROTO op_fxam_ST0(void)
2108 void OPPROTO op_fld1_ST0(void)
2110 ST0 = *(CPU86_LDouble *)&f15rk[1];
2113 void OPPROTO op_fldl2t_ST0(void)
2115 ST0 = *(CPU86_LDouble *)&f15rk[6];
2118 void OPPROTO op_fldl2e_ST0(void)
2120 ST0 = *(CPU86_LDouble *)&f15rk[5];
2123 void OPPROTO op_fldpi_ST0(void)
2125 ST0 = *(CPU86_LDouble *)&f15rk[2];
2128 void OPPROTO op_fldlg2_ST0(void)
2130 ST0 = *(CPU86_LDouble *)&f15rk[3];
2133 void OPPROTO op_fldln2_ST0(void)
2135 ST0 = *(CPU86_LDouble *)&f15rk[4];
2138 void OPPROTO op_fldz_ST0(void)
2140 ST0 = *(CPU86_LDouble *)&f15rk[0];
2143 void OPPROTO op_fldz_FT0(void)
2145 ST0 = *(CPU86_LDouble *)&f15rk[0];
2148 void helper_f2xm1(void)
2150 ST0 = pow(2.0,ST0) - 1.0;
2153 void helper_fyl2x(void)
2155 CPU86_LDouble fptemp;
2159 fptemp = log(fptemp)/log(2.0); /* log2(ST) */
2163 env->fpus &= (~0x4700);
2168 void helper_fptan(void)
2170 CPU86_LDouble fptemp;
2173 if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
2179 env->fpus &= (~0x400); /* C2 <-- 0 */
2180 /* the above code is for |arg| < 2**52 only */
2184 void helper_fpatan(void)
2186 CPU86_LDouble fptemp, fpsrcop;
2190 ST1 = atan2(fpsrcop,fptemp);
2194 void helper_fxtract(void)
2196 CPU86_LDoubleU temp;
2197 unsigned int expdif;
2200 expdif = EXPD(temp) - EXPBIAS;
2201 /*DP exponent bias*/
2208 void helper_fprem1(void)
2210 CPU86_LDouble dblq, fpsrcop, fptemp;
2211 CPU86_LDoubleU fpsrcop1, fptemp1;
2217 fpsrcop1.d = fpsrcop;
2219 expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
2221 dblq = fpsrcop / fptemp;
2222 dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
2223 ST0 = fpsrcop - fptemp*dblq;
2224 q = (int)dblq; /* cutting off top bits is assumed here */
2225 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2226 /* (C0,C1,C3) <-- (q2,q1,q0) */
2227 env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
2228 env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
2229 env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
2231 env->fpus |= 0x400; /* C2 <-- 1 */
2232 fptemp = pow(2.0, expdif-50);
2233 fpsrcop = (ST0 / ST1) / fptemp;
2234 /* fpsrcop = integer obtained by rounding to the nearest */
2235 fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)?
2236 floor(fpsrcop): ceil(fpsrcop);
2237 ST0 -= (ST1 * fpsrcop * fptemp);
2241 void helper_fprem(void)
2243 CPU86_LDouble dblq, fpsrcop, fptemp;
2244 CPU86_LDoubleU fpsrcop1, fptemp1;
2250 fpsrcop1.d = fpsrcop;
2252 expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
2253 if ( expdif < 53 ) {
2254 dblq = fpsrcop / fptemp;
2255 dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
2256 ST0 = fpsrcop - fptemp*dblq;
2257 q = (int)dblq; /* cutting off top bits is assumed here */
2258 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2259 /* (C0,C1,C3) <-- (q2,q1,q0) */
2260 env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
2261 env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
2262 env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
2264 env->fpus |= 0x400; /* C2 <-- 1 */
2265 fptemp = pow(2.0, expdif-50);
2266 fpsrcop = (ST0 / ST1) / fptemp;
2267 /* fpsrcop = integer obtained by chopping */
2268 fpsrcop = (fpsrcop < 0.0)?
2269 -(floor(fabs(fpsrcop))): floor(fpsrcop);
2270 ST0 -= (ST1 * fpsrcop * fptemp);
2274 void helper_fyl2xp1(void)
2276 CPU86_LDouble fptemp;
2279 if ((fptemp+1.0)>0.0) {
2280 fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
2284 env->fpus &= (~0x4700);
2289 void helper_fsqrt(void)
2291 CPU86_LDouble fptemp;
2295 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2301 void helper_fsincos(void)
2303 CPU86_LDouble fptemp;
2306 if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
2312 env->fpus &= (~0x400); /* C2 <-- 0 */
2313 /* the above code is for |arg| < 2**63 only */
2317 void helper_frndint(void)
2322 void helper_fscale(void)
2324 CPU86_LDouble fpsrcop, fptemp;
2327 fptemp = pow(fpsrcop,ST1);
2331 void helper_fsin(void)
2333 CPU86_LDouble fptemp;
2336 if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
2340 env->fpus &= (~0x400); /* C2 <-- 0 */
2341 /* the above code is for |arg| < 2**53 only */
2345 void helper_fcos(void)
2347 CPU86_LDouble fptemp;
2350 if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
2354 env->fpus &= (~0x400); /* C2 <-- 0 */
2355 /* the above code is for |arg5 < 2**63 only */
2359 /* associated heplers to reduce generated code length and to simplify
2360 relocation (FP constants are usually stored in .rodata section) */
2362 void OPPROTO op_f2xm1(void)
2367 void OPPROTO op_fyl2x(void)
2372 void OPPROTO op_fptan(void)
2377 void OPPROTO op_fpatan(void)
2382 void OPPROTO op_fxtract(void)
2387 void OPPROTO op_fprem1(void)
2393 void OPPROTO op_fprem(void)
2398 void OPPROTO op_fyl2xp1(void)
2403 void OPPROTO op_fsqrt(void)
2408 void OPPROTO op_fsincos(void)
2413 void OPPROTO op_frndint(void)
2418 void OPPROTO op_fscale(void)
2423 void OPPROTO op_fsin(void)
2428 void OPPROTO op_fcos(void)
2433 void OPPROTO op_fnstsw_A0(void)
2436 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
2437 stw((void *)A0, fpus);
2440 void OPPROTO op_fnstsw_EAX(void)
2443 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
2444 EAX = (EAX & 0xffff0000) | fpus;
2447 void OPPROTO op_fnstcw_A0(void)
2449 stw((void *)A0, env->fpuc);
2452 void OPPROTO op_fldcw_A0(void)
2455 env->fpuc = lduw((void *)A0);
2456 /* set rounding mode */
2457 switch(env->fpuc & RC_MASK) {
2460 rnd_type = FE_TONEAREST;
2463 rnd_type = FE_DOWNWARD;
2466 rnd_type = FE_UPWARD;
2469 rnd_type = FE_TOWARDZERO;
2472 fesetround(rnd_type);
2475 void OPPROTO op_fclex(void)
2477 env->fpus &= 0x7f00;
2480 void OPPROTO op_fninit(void)
2495 /* threading support */
2496 void OPPROTO op_lock(void)
2501 void OPPROTO op_unlock(void)