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 /* n must be a constant to be efficient */
23 static inline int lshift(int x, int n)
31 /* we define the various pieces of code used by the JIT */
35 #include "opreg_template.h"
41 #include "opreg_template.h"
47 #include "opreg_template.h"
53 #include "opreg_template.h"
59 #include "opreg_template.h"
65 #include "opreg_template.h"
71 #include "opreg_template.h"
77 #include "opreg_template.h"
81 /* operations with flags */
83 void OPPROTO op_addl_T0_T1_cc(void)
90 void OPPROTO op_orl_T0_T1_cc(void)
96 void OPPROTO op_andl_T0_T1_cc(void)
102 void OPPROTO op_subl_T0_T1_cc(void)
109 void OPPROTO op_xorl_T0_T1_cc(void)
115 void OPPROTO op_cmpl_T0_T1_cc(void)
121 void OPPROTO op_negl_T0_cc(void)
128 void OPPROTO op_incl_T0_cc(void)
130 CC_SRC = cc_table[CC_OP].compute_c();
135 void OPPROTO op_decl_T0_cc(void)
137 CC_SRC = cc_table[CC_OP].compute_c();
142 void OPPROTO op_testl_T0_T1_cc(void)
147 /* operations without flags */
149 void OPPROTO op_addl_T0_T1(void)
154 void OPPROTO op_orl_T0_T1(void)
159 void OPPROTO op_andl_T0_T1(void)
164 void OPPROTO op_subl_T0_T1(void)
169 void OPPROTO op_xorl_T0_T1(void)
174 void OPPROTO op_negl_T0(void)
179 void OPPROTO op_incl_T0(void)
184 void OPPROTO op_decl_T0(void)
189 void OPPROTO op_notl_T0(void)
194 void OPPROTO op_bswapl_T0(void)
199 /* multiply/divide */
200 void OPPROTO op_mulb_AL_T0(void)
203 res = (uint8_t)EAX * (uint8_t)T0;
204 EAX = (EAX & 0xffff0000) | res;
205 CC_SRC = (res & 0xff00);
208 void OPPROTO op_imulb_AL_T0(void)
211 res = (int8_t)EAX * (int8_t)T0;
212 EAX = (EAX & 0xffff0000) | (res & 0xffff);
213 CC_SRC = (res != (int8_t)res);
216 void OPPROTO op_mulw_AX_T0(void)
219 res = (uint16_t)EAX * (uint16_t)T0;
220 EAX = (EAX & 0xffff0000) | (res & 0xffff);
221 EDX = (EDX & 0xffff0000) | ((res >> 16) & 0xffff);
225 void OPPROTO op_imulw_AX_T0(void)
228 res = (int16_t)EAX * (int16_t)T0;
229 EAX = (EAX & 0xffff0000) | (res & 0xffff);
230 EDX = (EDX & 0xffff0000) | ((res >> 16) & 0xffff);
231 CC_SRC = (res != (int16_t)res);
234 void OPPROTO op_mull_EAX_T0(void)
237 res = (uint64_t)((uint32_t)EAX) * (uint64_t)((uint32_t)T0);
243 void OPPROTO op_imull_EAX_T0(void)
246 res = (int64_t)((int32_t)EAX) * (int64_t)((int32_t)T0);
249 CC_SRC = (res != (int32_t)res);
252 void OPPROTO op_imulw_T0_T1(void)
255 res = (int16_t)T0 * (int16_t)T1;
257 CC_SRC = (res != (int16_t)res);
260 void OPPROTO op_imull_T0_T1(void)
263 res = (int64_t)((int32_t)T0) * (int64_t)((int32_t)T1);
265 CC_SRC = (res != (int32_t)res);
268 /* division, flags are undefined */
269 /* XXX: add exceptions for overflow */
271 void OPPROTO op_divb_AL_T0(void)
273 unsigned int num, den, q, r;
275 num = (EAX & 0xffff);
279 raise_exception(EXCP00_DIVZ);
281 q = (num / den) & 0xff;
282 r = (num % den) & 0xff;
283 EAX = (EAX & 0xffff0000) | (r << 8) | q;
286 void OPPROTO op_idivb_AL_T0(void)
294 raise_exception(EXCP00_DIVZ);
296 q = (num / den) & 0xff;
297 r = (num % den) & 0xff;
298 EAX = (EAX & 0xffff0000) | (r << 8) | q;
301 void OPPROTO op_divw_AX_T0(void)
303 unsigned int num, den, q, r;
305 num = (EAX & 0xffff) | ((EDX & 0xffff) << 16);
309 raise_exception(EXCP00_DIVZ);
311 q = (num / den) & 0xffff;
312 r = (num % den) & 0xffff;
313 EAX = (EAX & 0xffff0000) | q;
314 EDX = (EDX & 0xffff0000) | r;
317 void OPPROTO op_idivw_AX_T0(void)
321 num = (EAX & 0xffff) | ((EDX & 0xffff) << 16);
325 raise_exception(EXCP00_DIVZ);
327 q = (num / den) & 0xffff;
328 r = (num % den) & 0xffff;
329 EAX = (EAX & 0xffff0000) | q;
330 EDX = (EDX & 0xffff0000) | r;
333 void OPPROTO op_divl_EAX_T0(void)
335 helper_divl_EAX_T0(PARAM1);
338 void OPPROTO op_idivl_EAX_T0(void)
340 helper_idivl_EAX_T0(PARAM1);
343 /* constant load & misc op */
345 void OPPROTO op_movl_T0_im(void)
350 void OPPROTO op_addl_T0_im(void)
355 void OPPROTO op_andl_T0_ffff(void)
360 void OPPROTO op_andl_T0_im(void)
365 void OPPROTO op_movl_T0_T1(void)
370 void OPPROTO op_movl_T1_im(void)
375 void OPPROTO op_addl_T1_im(void)
380 void OPPROTO op_movl_T1_A0(void)
385 void OPPROTO op_movl_A0_im(void)
390 void OPPROTO op_addl_A0_im(void)
395 void OPPROTO op_addl_A0_AL(void)
400 void OPPROTO op_andl_A0_ffff(void)
407 void OPPROTO op_ldub_T0_A0(void)
409 T0 = ldub((uint8_t *)A0);
412 void OPPROTO op_ldsb_T0_A0(void)
414 T0 = ldsb((int8_t *)A0);
417 void OPPROTO op_lduw_T0_A0(void)
419 T0 = lduw((uint8_t *)A0);
422 void OPPROTO op_ldsw_T0_A0(void)
424 T0 = ldsw((int8_t *)A0);
427 void OPPROTO op_ldl_T0_A0(void)
429 T0 = ldl((uint8_t *)A0);
432 void OPPROTO op_ldub_T1_A0(void)
434 T1 = ldub((uint8_t *)A0);
437 void OPPROTO op_ldsb_T1_A0(void)
439 T1 = ldsb((int8_t *)A0);
442 void OPPROTO op_lduw_T1_A0(void)
444 T1 = lduw((uint8_t *)A0);
447 void OPPROTO op_ldsw_T1_A0(void)
449 T1 = ldsw((int8_t *)A0);
452 void OPPROTO op_ldl_T1_A0(void)
454 T1 = ldl((uint8_t *)A0);
457 void OPPROTO op_stb_T0_A0(void)
459 stb((uint8_t *)A0, T0);
462 void OPPROTO op_stw_T0_A0(void)
464 stw((uint8_t *)A0, T0);
467 void OPPROTO op_stl_T0_A0(void)
469 stl((uint8_t *)A0, T0);
472 /* used for bit operations */
474 void OPPROTO op_add_bitw_A0_T1(void)
476 A0 += ((int32_t)T1 >> 4) << 1;
479 void OPPROTO op_add_bitl_A0_T1(void)
481 A0 += ((int32_t)T1 >> 5) << 2;
486 void OPPROTO op_jmp_T0(void)
491 void OPPROTO op_jmp_im(void)
496 void OPPROTO op_hlt(void)
498 env->exception_index = EXCP_HLT;
502 void OPPROTO op_raise_interrupt(void)
505 unsigned int next_eip;
508 raise_interrupt(intno, 1, 0, next_eip);
511 void OPPROTO op_raise_exception(void)
514 exception_index = PARAM1;
515 raise_exception(exception_index);
518 void OPPROTO op_into(void)
521 eflags = cc_table[CC_OP].compute_all();
523 raise_interrupt(EXCP04_INTO, 1, 0, PARAM1);
528 void OPPROTO op_cli(void)
530 env->eflags &= ~IF_MASK;
533 void OPPROTO op_sti(void)
535 env->eflags |= IF_MASK;
539 /* vm86plus instructions */
540 void OPPROTO op_cli_vm(void)
542 env->eflags &= ~VIF_MASK;
545 void OPPROTO op_sti_vm(void)
547 env->eflags |= VIF_MASK;
548 if (env->eflags & VIP_MASK) {
550 raise_exception(EXCP0D_GPF);
556 void OPPROTO op_boundw(void)
559 low = ldsw((uint8_t *)A0);
560 high = ldsw((uint8_t *)A0 + 2);
562 if (v < low || v > high) {
564 raise_exception(EXCP05_BOUND);
569 void OPPROTO op_boundl(void)
572 low = ldl((uint8_t *)A0);
573 high = ldl((uint8_t *)A0 + 4);
575 if (v < low || v > high) {
577 raise_exception(EXCP05_BOUND);
582 void OPPROTO op_cmpxchg8b(void)
587 void OPPROTO op_jmp_tb_next(void)
589 JUMP_TB(PARAM1, 0, PARAM2);
592 void OPPROTO op_movl_T0_0(void)
597 /* multiple size ops */
602 #include "ops_template.h"
606 #include "ops_template.h"
610 #include "ops_template.h"
615 void OPPROTO op_movsbl_T0_T0(void)
620 void OPPROTO op_movzbl_T0_T0(void)
625 void OPPROTO op_movswl_T0_T0(void)
630 void OPPROTO op_movzwl_T0_T0(void)
635 void OPPROTO op_movswl_EAX_AX(void)
640 void OPPROTO op_movsbw_AX_AL(void)
642 EAX = (EAX & 0xffff0000) | ((int8_t)EAX & 0xffff);
645 void OPPROTO op_movslq_EDX_EAX(void)
647 EDX = (int32_t)EAX >> 31;
650 void OPPROTO op_movswl_DX_AX(void)
652 EDX = (EDX & 0xffff0000) | (((int16_t)EAX >> 15) & 0xffff);
657 void op_pushl_T0(void)
661 stl((void *)offset, T0);
662 /* modify ESP after to handle exceptions correctly */
666 void op_pushw_T0(void)
670 stw((void *)offset, T0);
671 /* modify ESP after to handle exceptions correctly */
675 void op_pushl_ss32_T0(void)
679 stl(env->segs[R_SS].base + offset, T0);
680 /* modify ESP after to handle exceptions correctly */
684 void op_pushw_ss32_T0(void)
688 stw(env->segs[R_SS].base + offset, T0);
689 /* modify ESP after to handle exceptions correctly */
693 void op_pushl_ss16_T0(void)
696 offset = (ESP - 4) & 0xffff;
697 stl(env->segs[R_SS].base + offset, T0);
698 /* modify ESP after to handle exceptions correctly */
699 ESP = (ESP & ~0xffff) | offset;
702 void op_pushw_ss16_T0(void)
705 offset = (ESP - 2) & 0xffff;
706 stw(env->segs[R_SS].base + offset, T0);
707 /* modify ESP after to handle exceptions correctly */
708 ESP = (ESP & ~0xffff) | offset;
711 /* NOTE: ESP update is done after */
712 void op_popl_T0(void)
714 T0 = ldl((void *)ESP);
717 void op_popw_T0(void)
719 T0 = lduw((void *)ESP);
722 void op_popl_ss32_T0(void)
724 T0 = ldl(env->segs[R_SS].base + ESP);
727 void op_popw_ss32_T0(void)
729 T0 = lduw(env->segs[R_SS].base + ESP);
732 void op_popl_ss16_T0(void)
734 T0 = ldl(env->segs[R_SS].base + (ESP & 0xffff));
737 void op_popw_ss16_T0(void)
739 T0 = lduw(env->segs[R_SS].base + (ESP & 0xffff));
742 void op_addl_ESP_4(void)
747 void op_addl_ESP_2(void)
752 void op_addw_ESP_4(void)
754 ESP = (ESP & ~0xffff) | ((ESP + 4) & 0xffff);
757 void op_addw_ESP_2(void)
759 ESP = (ESP & ~0xffff) | ((ESP + 2) & 0xffff);
762 void op_addl_ESP_im(void)
767 void op_addw_ESP_im(void)
769 ESP = (ESP & ~0xffff) | ((ESP + PARAM1) & 0xffff);
772 void OPPROTO op_rdtsc(void)
777 void OPPROTO op_cpuid(void)
785 void OPPROTO op_aam(void)
792 EAX = (EAX & ~0xffff) | al | (ah << 8);
796 void OPPROTO op_aad(void)
801 ah = (EAX >> 8) & 0xff;
802 al = ((ah * base) + al) & 0xff;
803 EAX = (EAX & ~0xffff) | al;
807 void OPPROTO op_aaa(void)
813 eflags = cc_table[CC_OP].compute_all();
816 ah = (EAX >> 8) & 0xff;
818 icarry = (al > 0xf9);
819 if (((al & 0x0f) > 9 ) || af) {
820 al = (al + 6) & 0x0f;
821 ah = (ah + 1 + icarry) & 0xff;
822 eflags |= CC_C | CC_A;
824 eflags &= ~(CC_C | CC_A);
827 EAX = (EAX & ~0xffff) | al | (ah << 8);
831 void OPPROTO op_aas(void)
837 eflags = cc_table[CC_OP].compute_all();
840 ah = (EAX >> 8) & 0xff;
843 if (((al & 0x0f) > 9 ) || af) {
844 al = (al - 6) & 0x0f;
845 ah = (ah - 1 - icarry) & 0xff;
846 eflags |= CC_C | CC_A;
848 eflags &= ~(CC_C | CC_A);
851 EAX = (EAX & ~0xffff) | al | (ah << 8);
855 void OPPROTO op_daa(void)
860 eflags = cc_table[CC_OP].compute_all();
866 if (((al & 0x0f) > 9 ) || af) {
867 al = (al + 6) & 0xff;
870 if ((al > 0x9f) || cf) {
871 al = (al + 0x60) & 0xff;
874 EAX = (EAX & ~0xff) | al;
875 /* well, speed is not an issue here, so we compute the flags by hand */
876 eflags |= (al == 0) << 6; /* zf */
877 eflags |= parity_table[al]; /* pf */
878 eflags |= (al & 0x80); /* sf */
882 void OPPROTO op_das(void)
887 eflags = cc_table[CC_OP].compute_all();
894 if (((al & 0x0f) > 9 ) || af) {
898 al = (al - 6) & 0xff;
900 if ((al1 > 0x99) || cf) {
901 al = (al - 0x60) & 0xff;
904 EAX = (EAX & ~0xff) | al;
905 /* well, speed is not an issue here, so we compute the flags by hand */
906 eflags |= (al == 0) << 6; /* zf */
907 eflags |= parity_table[al]; /* pf */
908 eflags |= (al & 0x80); /* sf */
912 /* segment handling */
914 void OPPROTO op_movl_seg_T0(void)
916 load_seg(PARAM1, T0 & 0xffff, PARAM2);
919 /* faster VM86 version */
920 void OPPROTO op_movl_seg_T0_vm(void)
925 selector = T0 & 0xffff;
926 /* env->segs[] access */
927 sc = (SegmentCache *)((char *)env + PARAM1);
928 sc->selector = selector;
929 sc->base = (void *)(selector << 4);
932 void OPPROTO op_movl_T0_seg(void)
934 T0 = env->segs[PARAM1].selector;
937 void OPPROTO op_movl_A0_seg(void)
939 A0 = *(unsigned long *)((char *)env + PARAM1);
942 void OPPROTO op_addl_A0_seg(void)
944 A0 += *(unsigned long *)((char *)env + PARAM1);
947 void OPPROTO op_lsl(void)
952 void OPPROTO op_lar(void)
957 /* T0: segment, T1:eip */
958 void OPPROTO op_ljmp_T0_T1(void)
960 jmp_seg(T0 & 0xffff, T1);
963 void OPPROTO op_iret_protected(void)
965 helper_iret_protected(PARAM1);
968 void OPPROTO op_lldt_T0(void)
973 void OPPROTO op_ltr_T0(void)
978 /* CR registers access */
979 void OPPROTO op_movl_crN_T0(void)
981 helper_movl_crN_T0(PARAM1);
984 /* DR registers access */
985 void OPPROTO op_movl_drN_T0(void)
987 helper_movl_drN_T0(PARAM1);
990 void OPPROTO op_lmsw_T0(void)
992 /* only 4 lower bits of CR0 are modified */
993 T0 = (env->cr[0] & ~0xf) | (T0 & 0xf);
994 helper_movl_crN_T0(0);
997 void OPPROTO op_invlpg_A0(void)
1002 void OPPROTO op_movl_T0_env(void)
1004 T0 = *(uint32_t *)((char *)env + PARAM1);
1007 void OPPROTO op_movl_env_T0(void)
1009 *(uint32_t *)((char *)env + PARAM1) = T0;
1012 void OPPROTO op_movl_env_T1(void)
1014 *(uint32_t *)((char *)env + PARAM1) = T1;
1017 void OPPROTO op_clts(void)
1019 env->cr[0] &= ~CR0_TS_MASK;
1022 /* flags handling */
1024 /* slow jumps cases : in order to avoid calling a function with a
1025 pointer (which can generate a stack frame on PowerPC), we use
1026 op_setcc to set T0 and then call op_jcc. */
1027 void OPPROTO op_jcc(void)
1030 JUMP_TB(PARAM1, 0, PARAM2);
1032 JUMP_TB(PARAM1, 1, PARAM3);
1036 /* slow set cases (compute x86 flags) */
1037 void OPPROTO op_seto_T0_cc(void)
1040 eflags = cc_table[CC_OP].compute_all();
1041 T0 = (eflags >> 11) & 1;
1044 void OPPROTO op_setb_T0_cc(void)
1046 T0 = cc_table[CC_OP].compute_c();
1049 void OPPROTO op_setz_T0_cc(void)
1052 eflags = cc_table[CC_OP].compute_all();
1053 T0 = (eflags >> 6) & 1;
1056 void OPPROTO op_setbe_T0_cc(void)
1059 eflags = cc_table[CC_OP].compute_all();
1060 T0 = (eflags & (CC_Z | CC_C)) != 0;
1063 void OPPROTO op_sets_T0_cc(void)
1066 eflags = cc_table[CC_OP].compute_all();
1067 T0 = (eflags >> 7) & 1;
1070 void OPPROTO op_setp_T0_cc(void)
1073 eflags = cc_table[CC_OP].compute_all();
1074 T0 = (eflags >> 2) & 1;
1077 void OPPROTO op_setl_T0_cc(void)
1080 eflags = cc_table[CC_OP].compute_all();
1081 T0 = ((eflags ^ (eflags >> 4)) >> 7) & 1;
1084 void OPPROTO op_setle_T0_cc(void)
1087 eflags = cc_table[CC_OP].compute_all();
1088 T0 = (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z)) != 0;
1091 void OPPROTO op_xor_T0_1(void)
1096 void OPPROTO op_set_cc_op(void)
1101 #define FL_UPDATE_MASK16 (FL_UPDATE_MASK32 & 0xffff)
1103 void OPPROTO op_movl_eflags_T0(void)
1107 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1108 DF = 1 - (2 * ((eflags >> 10) & 1));
1109 /* we also update some system flags as in user mode */
1110 env->eflags = (env->eflags & ~FL_UPDATE_MASK32) |
1111 (eflags & FL_UPDATE_MASK32);
1114 void OPPROTO op_movw_eflags_T0(void)
1118 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1119 DF = 1 - (2 * ((eflags >> 10) & 1));
1120 /* we also update some system flags as in user mode */
1121 env->eflags = (env->eflags & ~FL_UPDATE_MASK16) |
1122 (eflags & FL_UPDATE_MASK16);
1125 void OPPROTO op_movl_eflags_T0_cpl0(void)
1127 load_eflags(T0, FL_UPDATE_CPL0_MASK);
1130 void OPPROTO op_movw_eflags_T0_cpl0(void)
1132 load_eflags(T0, FL_UPDATE_CPL0_MASK & 0xffff);
1136 /* vm86plus version */
1137 void OPPROTO op_movw_eflags_T0_vm(void)
1141 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1142 DF = 1 - (2 * ((eflags >> 10) & 1));
1143 /* we also update some system flags as in user mode */
1144 env->eflags = (env->eflags & ~(FL_UPDATE_MASK16 | VIF_MASK)) |
1145 (eflags & FL_UPDATE_MASK16);
1146 if (eflags & IF_MASK) {
1147 env->eflags |= VIF_MASK;
1148 if (env->eflags & VIP_MASK) {
1150 raise_exception(EXCP0D_GPF);
1156 void OPPROTO op_movl_eflags_T0_vm(void)
1160 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
1161 DF = 1 - (2 * ((eflags >> 10) & 1));
1162 /* we also update some system flags as in user mode */
1163 env->eflags = (env->eflags & ~(FL_UPDATE_MASK32 | VIF_MASK)) |
1164 (eflags & FL_UPDATE_MASK32);
1165 if (eflags & IF_MASK) {
1166 env->eflags |= VIF_MASK;
1167 if (env->eflags & VIP_MASK) {
1169 raise_exception(EXCP0D_GPF);
1176 /* XXX: compute only O flag */
1177 void OPPROTO op_movb_eflags_T0(void)
1180 of = cc_table[CC_OP].compute_all() & CC_O;
1181 CC_SRC = (T0 & (CC_S | CC_Z | CC_A | CC_P | CC_C)) | of;
1184 void OPPROTO op_movl_T0_eflags(void)
1187 eflags = cc_table[CC_OP].compute_all();
1188 eflags |= (DF & DF_MASK);
1189 eflags |= env->eflags & ~(VM_MASK | RF_MASK);
1193 /* vm86plus version */
1195 void OPPROTO op_movl_T0_eflags_vm(void)
1198 eflags = cc_table[CC_OP].compute_all();
1199 eflags |= (DF & DF_MASK);
1200 eflags |= env->eflags & ~(VM_MASK | RF_MASK | IF_MASK);
1201 if (env->eflags & VIF_MASK)
1207 void OPPROTO op_cld(void)
1212 void OPPROTO op_std(void)
1217 void OPPROTO op_clc(void)
1220 eflags = cc_table[CC_OP].compute_all();
1225 void OPPROTO op_stc(void)
1228 eflags = cc_table[CC_OP].compute_all();
1233 void OPPROTO op_cmc(void)
1236 eflags = cc_table[CC_OP].compute_all();
1241 void OPPROTO op_salc(void)
1244 cf = cc_table[CC_OP].compute_c();
1245 EAX = (EAX & ~0xff) | ((-cf) & 0xff);
1248 static int compute_all_eflags(void)
1253 static int compute_c_eflags(void)
1255 return CC_SRC & CC_C;
1258 static int compute_c_mul(void)
1265 static int compute_all_mul(void)
1267 int cf, pf, af, zf, sf, of;
1269 pf = 0; /* undefined */
1270 af = 0; /* undefined */
1271 zf = 0; /* undefined */
1272 sf = 0; /* undefined */
1274 return cf | pf | af | zf | sf | of;
1277 CCTable cc_table[CC_OP_NB] = {
1278 [CC_OP_DYNAMIC] = { /* should never happen */ },
1280 [CC_OP_EFLAGS] = { compute_all_eflags, compute_c_eflags },
1282 [CC_OP_MUL] = { compute_all_mul, compute_c_mul },
1284 [CC_OP_ADDB] = { compute_all_addb, compute_c_addb },
1285 [CC_OP_ADDW] = { compute_all_addw, compute_c_addw },
1286 [CC_OP_ADDL] = { compute_all_addl, compute_c_addl },
1288 [CC_OP_ADCB] = { compute_all_adcb, compute_c_adcb },
1289 [CC_OP_ADCW] = { compute_all_adcw, compute_c_adcw },
1290 [CC_OP_ADCL] = { compute_all_adcl, compute_c_adcl },
1292 [CC_OP_SUBB] = { compute_all_subb, compute_c_subb },
1293 [CC_OP_SUBW] = { compute_all_subw, compute_c_subw },
1294 [CC_OP_SUBL] = { compute_all_subl, compute_c_subl },
1296 [CC_OP_SBBB] = { compute_all_sbbb, compute_c_sbbb },
1297 [CC_OP_SBBW] = { compute_all_sbbw, compute_c_sbbw },
1298 [CC_OP_SBBL] = { compute_all_sbbl, compute_c_sbbl },
1300 [CC_OP_LOGICB] = { compute_all_logicb, compute_c_logicb },
1301 [CC_OP_LOGICW] = { compute_all_logicw, compute_c_logicw },
1302 [CC_OP_LOGICL] = { compute_all_logicl, compute_c_logicl },
1304 [CC_OP_INCB] = { compute_all_incb, compute_c_incl },
1305 [CC_OP_INCW] = { compute_all_incw, compute_c_incl },
1306 [CC_OP_INCL] = { compute_all_incl, compute_c_incl },
1308 [CC_OP_DECB] = { compute_all_decb, compute_c_incl },
1309 [CC_OP_DECW] = { compute_all_decw, compute_c_incl },
1310 [CC_OP_DECL] = { compute_all_decl, compute_c_incl },
1312 [CC_OP_SHLB] = { compute_all_shlb, compute_c_shlb },
1313 [CC_OP_SHLW] = { compute_all_shlw, compute_c_shlw },
1314 [CC_OP_SHLL] = { compute_all_shll, compute_c_shll },
1316 [CC_OP_SARB] = { compute_all_sarb, compute_c_sarl },
1317 [CC_OP_SARW] = { compute_all_sarw, compute_c_sarl },
1318 [CC_OP_SARL] = { compute_all_sarl, compute_c_sarl },
1321 /* floating point support. Some of the code for complicated x87
1322 functions comes from the LGPL'ed x86 emulator found in the Willows
1323 TWIN windows emulator. */
1325 #if defined(__powerpc__)
1326 extern CPU86_LDouble copysign(CPU86_LDouble, CPU86_LDouble);
1328 /* correct (but slow) PowerPC rint() (glibc version is incorrect) */
1329 double qemu_rint(double x)
1331 double y = 4503599627370496.0;
1342 #define rint qemu_rint
1347 void OPPROTO op_flds_FT0_A0(void)
1349 #ifdef USE_FP_CONVERT
1350 FP_CONVERT.i32 = ldl((void *)A0);
1353 FT0 = ldfl((void *)A0);
1357 void OPPROTO op_fldl_FT0_A0(void)
1359 #ifdef USE_FP_CONVERT
1360 FP_CONVERT.i64 = ldq((void *)A0);
1363 FT0 = ldfq((void *)A0);
1367 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1368 #ifdef USE_INT_TO_FLOAT_HELPERS
1370 void helper_fild_FT0_A0(void)
1372 FT0 = (CPU86_LDouble)ldsw((void *)A0);
1375 void helper_fildl_FT0_A0(void)
1377 FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1380 void helper_fildll_FT0_A0(void)
1382 FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1385 void OPPROTO op_fild_FT0_A0(void)
1387 helper_fild_FT0_A0();
1390 void OPPROTO op_fildl_FT0_A0(void)
1392 helper_fildl_FT0_A0();
1395 void OPPROTO op_fildll_FT0_A0(void)
1397 helper_fildll_FT0_A0();
1402 void OPPROTO op_fild_FT0_A0(void)
1404 #ifdef USE_FP_CONVERT
1405 FP_CONVERT.i32 = ldsw((void *)A0);
1406 FT0 = (CPU86_LDouble)FP_CONVERT.i32;
1408 FT0 = (CPU86_LDouble)ldsw((void *)A0);
1412 void OPPROTO op_fildl_FT0_A0(void)
1414 #ifdef USE_FP_CONVERT
1415 FP_CONVERT.i32 = (int32_t) ldl((void *)A0);
1416 FT0 = (CPU86_LDouble)FP_CONVERT.i32;
1418 FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1422 void OPPROTO op_fildll_FT0_A0(void)
1424 #ifdef USE_FP_CONVERT
1425 FP_CONVERT.i64 = (int64_t) ldq((void *)A0);
1426 FT0 = (CPU86_LDouble)FP_CONVERT.i64;
1428 FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1435 void OPPROTO op_flds_ST0_A0(void)
1437 #ifdef USE_FP_CONVERT
1438 FP_CONVERT.i32 = ldl((void *)A0);
1441 ST0 = ldfl((void *)A0);
1445 void OPPROTO op_fldl_ST0_A0(void)
1447 #ifdef USE_FP_CONVERT
1448 FP_CONVERT.i64 = ldq((void *)A0);
1451 ST0 = ldfq((void *)A0);
1455 #ifdef USE_X86LDOUBLE
1456 void OPPROTO op_fldt_ST0_A0(void)
1458 ST0 = *(long double *)A0;
1461 void OPPROTO op_fldt_ST0_A0(void)
1463 helper_fldt_ST0_A0();
1467 /* helpers are needed to avoid static constant reference. XXX: find a better way */
1468 #ifdef USE_INT_TO_FLOAT_HELPERS
1470 void helper_fild_ST0_A0(void)
1472 ST0 = (CPU86_LDouble)ldsw((void *)A0);
1475 void helper_fildl_ST0_A0(void)
1477 ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1480 void helper_fildll_ST0_A0(void)
1482 ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1485 void OPPROTO op_fild_ST0_A0(void)
1487 helper_fild_ST0_A0();
1490 void OPPROTO op_fildl_ST0_A0(void)
1492 helper_fildl_ST0_A0();
1495 void OPPROTO op_fildll_ST0_A0(void)
1497 helper_fildll_ST0_A0();
1502 void OPPROTO op_fild_ST0_A0(void)
1504 #ifdef USE_FP_CONVERT
1505 FP_CONVERT.i32 = ldsw((void *)A0);
1506 ST0 = (CPU86_LDouble)FP_CONVERT.i32;
1508 ST0 = (CPU86_LDouble)ldsw((void *)A0);
1512 void OPPROTO op_fildl_ST0_A0(void)
1514 #ifdef USE_FP_CONVERT
1515 FP_CONVERT.i32 = (int32_t) ldl((void *)A0);
1516 ST0 = (CPU86_LDouble)FP_CONVERT.i32;
1518 ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
1522 void OPPROTO op_fildll_ST0_A0(void)
1524 #ifdef USE_FP_CONVERT
1525 FP_CONVERT.i64 = (int64_t) ldq((void *)A0);
1526 ST0 = (CPU86_LDouble)FP_CONVERT.i64;
1528 ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
1536 void OPPROTO op_fsts_ST0_A0(void)
1538 #ifdef USE_FP_CONVERT
1539 FP_CONVERT.f = (float)ST0;
1540 stfl((void *)A0, FP_CONVERT.f);
1542 stfl((void *)A0, (float)ST0);
1546 void OPPROTO op_fstl_ST0_A0(void)
1548 stfq((void *)A0, (double)ST0);
1551 #ifdef USE_X86LDOUBLE
1552 void OPPROTO op_fstt_ST0_A0(void)
1554 *(long double *)A0 = ST0;
1557 void OPPROTO op_fstt_ST0_A0(void)
1559 helper_fstt_ST0_A0();
1563 void OPPROTO op_fist_ST0_A0(void)
1565 #if defined(__sparc__) && !defined(__sparc_v9__)
1566 register CPU86_LDouble d asm("o0");
1574 if (val != (int16_t)val)
1576 stw((void *)A0, val);
1579 void OPPROTO op_fistl_ST0_A0(void)
1581 #if defined(__sparc__) && !defined(__sparc_v9__)
1582 register CPU86_LDouble d asm("o0");
1590 stl((void *)A0, val);
1593 void OPPROTO op_fistll_ST0_A0(void)
1595 #if defined(__sparc__) && !defined(__sparc_v9__)
1596 register CPU86_LDouble d asm("o0");
1604 stq((void *)A0, val);
1607 void OPPROTO op_fbld_ST0_A0(void)
1609 helper_fbld_ST0_A0();
1612 void OPPROTO op_fbst_ST0_A0(void)
1614 helper_fbst_ST0_A0();
1619 void OPPROTO op_fpush(void)
1624 void OPPROTO op_fpop(void)
1629 void OPPROTO op_fdecstp(void)
1631 env->fpstt = (env->fpstt - 1) & 7;
1632 env->fpus &= (~0x4700);
1635 void OPPROTO op_fincstp(void)
1637 env->fpstt = (env->fpstt + 1) & 7;
1638 env->fpus &= (~0x4700);
1641 void OPPROTO op_fmov_ST0_FT0(void)
1646 void OPPROTO op_fmov_FT0_STN(void)
1651 void OPPROTO op_fmov_ST0_STN(void)
1656 void OPPROTO op_fmov_STN_ST0(void)
1661 void OPPROTO op_fxchg_ST0_STN(void)
1669 /* FPU operations */
1671 /* XXX: handle nans */
1672 void OPPROTO op_fcom_ST0_FT0(void)
1674 env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */
1676 env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */
1677 else if (ST0 == FT0)
1678 env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */
1682 /* XXX: handle nans */
1683 void OPPROTO op_fucom_ST0_FT0(void)
1685 env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */
1687 env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */
1688 else if (ST0 == FT0)
1689 env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */
1693 /* XXX: handle nans */
1694 void OPPROTO op_fcomi_ST0_FT0(void)
1697 eflags = cc_table[CC_OP].compute_all();
1698 eflags &= ~(CC_Z | CC_P | CC_C);
1701 else if (ST0 == FT0)
1707 /* XXX: handle nans */
1708 void OPPROTO op_fucomi_ST0_FT0(void)
1711 eflags = cc_table[CC_OP].compute_all();
1712 eflags &= ~(CC_Z | CC_P | CC_C);
1715 else if (ST0 == FT0)
1721 void OPPROTO op_fadd_ST0_FT0(void)
1726 void OPPROTO op_fmul_ST0_FT0(void)
1731 void OPPROTO op_fsub_ST0_FT0(void)
1736 void OPPROTO op_fsubr_ST0_FT0(void)
1741 void OPPROTO op_fdiv_ST0_FT0(void)
1746 void OPPROTO op_fdivr_ST0_FT0(void)
1751 /* fp operations between STN and ST0 */
1753 void OPPROTO op_fadd_STN_ST0(void)
1758 void OPPROTO op_fmul_STN_ST0(void)
1763 void OPPROTO op_fsub_STN_ST0(void)
1768 void OPPROTO op_fsubr_STN_ST0(void)
1775 void OPPROTO op_fdiv_STN_ST0(void)
1780 void OPPROTO op_fdivr_STN_ST0(void)
1787 /* misc FPU operations */
1788 void OPPROTO op_fchs_ST0(void)
1793 void OPPROTO op_fabs_ST0(void)
1798 void OPPROTO op_fxam_ST0(void)
1803 void OPPROTO op_fld1_ST0(void)
1808 void OPPROTO op_fldl2t_ST0(void)
1813 void OPPROTO op_fldl2e_ST0(void)
1818 void OPPROTO op_fldpi_ST0(void)
1823 void OPPROTO op_fldlg2_ST0(void)
1828 void OPPROTO op_fldln2_ST0(void)
1833 void OPPROTO op_fldz_ST0(void)
1838 void OPPROTO op_fldz_FT0(void)
1843 /* associated heplers to reduce generated code length and to simplify
1844 relocation (FP constants are usually stored in .rodata section) */
1846 void OPPROTO op_f2xm1(void)
1851 void OPPROTO op_fyl2x(void)
1856 void OPPROTO op_fptan(void)
1861 void OPPROTO op_fpatan(void)
1866 void OPPROTO op_fxtract(void)
1871 void OPPROTO op_fprem1(void)
1877 void OPPROTO op_fprem(void)
1882 void OPPROTO op_fyl2xp1(void)
1887 void OPPROTO op_fsqrt(void)
1892 void OPPROTO op_fsincos(void)
1897 void OPPROTO op_frndint(void)
1902 void OPPROTO op_fscale(void)
1907 void OPPROTO op_fsin(void)
1912 void OPPROTO op_fcos(void)
1917 void OPPROTO op_fnstsw_A0(void)
1920 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
1921 stw((void *)A0, fpus);
1924 void OPPROTO op_fnstsw_EAX(void)
1927 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
1928 EAX = (EAX & 0xffff0000) | fpus;
1931 void OPPROTO op_fnstcw_A0(void)
1933 stw((void *)A0, env->fpuc);
1936 void OPPROTO op_fldcw_A0(void)
1939 env->fpuc = lduw((void *)A0);
1940 /* set rounding mode */
1941 switch(env->fpuc & RC_MASK) {
1944 rnd_type = FE_TONEAREST;
1947 rnd_type = FE_DOWNWARD;
1950 rnd_type = FE_UPWARD;
1953 rnd_type = FE_TOWARDZERO;
1956 fesetround(rnd_type);
1959 void OPPROTO op_fclex(void)
1961 env->fpus &= 0x7f00;
1964 void OPPROTO op_fninit(void)
1979 void OPPROTO op_fnstenv_A0(void)
1981 helper_fstenv((uint8_t *)A0, PARAM1);
1984 void OPPROTO op_fldenv_A0(void)
1986 helper_fldenv((uint8_t *)A0, PARAM1);
1989 void OPPROTO op_fnsave_A0(void)
1991 helper_fsave((uint8_t *)A0, PARAM1);
1994 void OPPROTO op_frstor_A0(void)
1996 helper_frstor((uint8_t *)A0, PARAM1);
1999 /* threading support */
2000 void OPPROTO op_lock(void)
2005 void OPPROTO op_unlock(void)