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/*
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* i386 micro operations
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "exec-i386.h" |
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/* NOTE: data are not static to force relocation generation by GCC */
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uint8_t parity_table[256] = {
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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}; |
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/* modulo 17 table */
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const uint8_t rclw_table[32] = { |
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0, 1, 2, 3, 4, 5, 6, 7, |
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8, 9,10,11,12,13,14,15, |
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16, 0, 1, 2, 3, 4, 5, 6, |
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7, 8, 9,10,11,12,13,14, |
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}; |
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/* modulo 9 table */
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const uint8_t rclb_table[32] = { |
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0, 1, 2, 3, 4, 5, 6, 7, |
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8, 0, 1, 2, 3, 4, 5, 6, |
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7, 8, 0, 1, 2, 3, 4, 5, |
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6, 7, 8, 0, 1, 2, 3, 4, |
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}; |
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#ifdef USE_X86LDOUBLE
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/* an array of Intel 80-bit FP constants, to be loaded via integer ops */
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typedef unsigned short f15ld[5]; |
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const f15ld f15rk[] =
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{ |
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/*0*/ {0x0000,0x0000,0x0000,0x0000,0x0000}, |
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/*1*/ {0x0000,0x0000,0x0000,0x8000,0x3fff}, |
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/*pi*/ {0xc235,0x2168,0xdaa2,0xc90f,0x4000}, |
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/*lg2*/ {0xf799,0xfbcf,0x9a84,0x9a20,0x3ffd}, |
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/*ln2*/ {0x79ac,0xd1cf,0x17f7,0xb172,0x3ffe}, |
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/*l2e*/ {0xf0bc,0x5c17,0x3b29,0xb8aa,0x3fff}, |
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/*l2t*/ {0x8afe,0xcd1b,0x784b,0xd49a,0x4000} |
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}; |
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#else
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/* the same, 64-bit version */
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typedef unsigned short f15ld[4]; |
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const f15ld f15rk[] =
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{ |
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#ifndef WORDS_BIGENDIAN
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/*0*/ {0x0000,0x0000,0x0000,0x0000}, |
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/*1*/ {0x0000,0x0000,0x0000,0x3ff0}, |
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/*pi*/ {0x2d18,0x5444,0x21fb,0x4009}, |
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/*lg2*/ {0x79ff,0x509f,0x4413,0x3fd3}, |
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/*ln2*/ {0x39ef,0xfefa,0x2e42,0x3fe6}, |
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/*l2e*/ {0x82fe,0x652b,0x1547,0x3ff7}, |
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/*l2t*/ {0xa371,0x0979,0x934f,0x400a} |
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#else
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/*0*/ {0x0000,0x0000,0x0000,0x0000}, |
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/*1*/ {0x3ff0,0x0000,0x0000,0x0000}, |
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/*pi*/ {0x4009,0x21fb,0x5444,0x2d18}, |
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/*lg2*/ {0x3fd3,0x4413,0x509f,0x79ff}, |
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/*ln2*/ {0x3fe6,0x2e42,0xfefa,0x39ef}, |
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/*l2e*/ {0x3ff7,0x1547,0x652b,0x82fe}, |
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/*l2t*/ {0x400a,0x934f,0x0979,0xa371} |
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#endif
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}; |
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#endif
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/* n must be a constant to be efficient */
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static inline int lshift(int x, int n) |
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{ |
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if (n >= 0) |
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return x << n;
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else
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return x >> (-n);
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} |
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/* exception support */
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/* NOTE: not static to force relocation generation by GCC */
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void raise_exception(int exception_index) |
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{ |
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/* NOTE: the register at this point must be saved by hand because
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longjmp restore them */
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#ifdef reg_EAX
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env->regs[R_EAX] = EAX; |
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#endif
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#ifdef reg_ECX
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env->regs[R_ECX] = ECX; |
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#endif
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#ifdef reg_EDX
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env->regs[R_EDX] = EDX; |
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#endif
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#ifdef reg_EBX
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env->regs[R_EBX] = EBX; |
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#endif
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#ifdef reg_ESP
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env->regs[R_ESP] = ESP; |
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#endif
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#ifdef reg_EBP
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env->regs[R_EBP] = EBP; |
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#endif
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#ifdef reg_ESI
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env->regs[R_ESI] = ESI; |
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#endif
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#ifdef reg_EDI
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env->regs[R_EDI] = EDI; |
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#endif
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env->exception_index = exception_index; |
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longjmp(env->jmp_env, 1);
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} |
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/* we define the various pieces of code used by the JIT */
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#define REG EAX
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#define REGNAME _EAX
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG ECX
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#define REGNAME _ECX
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG EDX
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#define REGNAME _EDX
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG EBX
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#define REGNAME _EBX
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG ESP
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#define REGNAME _ESP
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG EBP
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#define REGNAME _EBP
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG ESI
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#define REGNAME _ESI
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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#define REG EDI
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#define REGNAME _EDI
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#include "opreg_template.h" |
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#undef REG
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#undef REGNAME
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/* operations with flags */
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void OPPROTO op_addl_T0_T1_cc(void) |
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{ |
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CC_SRC = T0; |
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T0 += T1; |
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CC_DST = T0; |
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} |
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void OPPROTO op_orl_T0_T1_cc(void) |
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{ |
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T0 |= T1; |
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CC_DST = T0; |
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} |
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void OPPROTO op_andl_T0_T1_cc(void) |
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{ |
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T0 &= T1; |
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CC_DST = T0; |
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} |
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void OPPROTO op_subl_T0_T1_cc(void) |
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{ |
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CC_SRC = T0; |
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T0 -= T1; |
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CC_DST = T0; |
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} |
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void OPPROTO op_xorl_T0_T1_cc(void) |
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{ |
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T0 ^= T1; |
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CC_DST = T0; |
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} |
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void OPPROTO op_cmpl_T0_T1_cc(void) |
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{ |
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CC_SRC = T0; |
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CC_DST = T0 - T1; |
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} |
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void OPPROTO op_negl_T0_cc(void) |
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{ |
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CC_SRC = 0;
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T0 = -T0; |
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CC_DST = T0; |
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} |
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void OPPROTO op_incl_T0_cc(void) |
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{ |
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CC_SRC = cc_table[CC_OP].compute_c(); |
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T0++; |
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CC_DST = T0; |
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} |
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void OPPROTO op_decl_T0_cc(void) |
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{ |
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CC_SRC = cc_table[CC_OP].compute_c(); |
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T0--; |
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CC_DST = T0; |
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} |
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void OPPROTO op_testl_T0_T1_cc(void) |
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{ |
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CC_DST = T0 & T1; |
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} |
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/* operations without flags */
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void OPPROTO op_addl_T0_T1(void) |
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{ |
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T0 += T1; |
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} |
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void OPPROTO op_orl_T0_T1(void) |
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{ |
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T0 |= T1; |
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} |
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void OPPROTO op_andl_T0_T1(void) |
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{ |
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T0 &= T1; |
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} |
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void OPPROTO op_subl_T0_T1(void) |
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{ |
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T0 -= T1; |
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} |
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void OPPROTO op_xorl_T0_T1(void) |
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{ |
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T0 ^= T1; |
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} |
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void OPPROTO op_negl_T0(void) |
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{ |
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T0 = -T0; |
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} |
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void OPPROTO op_incl_T0(void) |
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{ |
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T0++; |
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} |
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void OPPROTO op_decl_T0(void) |
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{ |
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T0--; |
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} |
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void OPPROTO op_notl_T0(void) |
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{ |
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T0 = ~T0; |
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} |
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void OPPROTO op_bswapl_T0(void) |
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{ |
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T0 = bswap32(T0); |
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} |
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/* multiply/divide */
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void OPPROTO op_mulb_AL_T0(void) |
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{ |
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unsigned int res; |
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res = (uint8_t)EAX * (uint8_t)T0; |
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EAX = (EAX & 0xffff0000) | res;
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CC_SRC = (res & 0xff00);
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} |
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void OPPROTO op_imulb_AL_T0(void) |
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{ |
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int res;
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res = (int8_t)EAX * (int8_t)T0; |
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EAX = (EAX & 0xffff0000) | (res & 0xffff); |
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CC_SRC = (res != (int8_t)res); |
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} |
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void OPPROTO op_mulw_AX_T0(void) |
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{ |
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unsigned int res; |
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res = (uint16_t)EAX * (uint16_t)T0; |
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EAX = (EAX & 0xffff0000) | (res & 0xffff); |
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EDX = (EDX & 0xffff0000) | ((res >> 16) & 0xffff); |
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CC_SRC = res >> 16;
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} |
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void OPPROTO op_imulw_AX_T0(void) |
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{ |
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int res;
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res = (int16_t)EAX * (int16_t)T0; |
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EAX = (EAX & 0xffff0000) | (res & 0xffff); |
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EDX = (EDX & 0xffff0000) | ((res >> 16) & 0xffff); |
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CC_SRC = (res != (int16_t)res); |
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} |
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void OPPROTO op_mull_EAX_T0(void) |
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{ |
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uint64_t res; |
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res = (uint64_t)((uint32_t)EAX) * (uint64_t)((uint32_t)T0); |
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EAX = res; |
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EDX = res >> 32;
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CC_SRC = res >> 32;
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} |
367 |
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void OPPROTO op_imull_EAX_T0(void) |
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{ |
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int64_t res; |
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res = (int64_t)((int32_t)EAX) * (int64_t)((int32_t)T0); |
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EAX = res; |
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EDX = res >> 32;
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CC_SRC = (res != (int32_t)res); |
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} |
376 |
|
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void OPPROTO op_imulw_T0_T1(void) |
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{ |
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int res;
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res = (int16_t)T0 * (int16_t)T1; |
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T0 = res; |
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CC_SRC = (res != (int16_t)res); |
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} |
384 |
|
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void OPPROTO op_imull_T0_T1(void) |
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{ |
387 |
int64_t res; |
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res = (int64_t)((int32_t)T0) * (int64_t)((int32_t)T1); |
389 |
T0 = res; |
390 |
CC_SRC = (res != (int32_t)res); |
391 |
} |
392 |
|
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/* division, flags are undefined */
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/* XXX: add exceptions for overflow & div by zero */
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void OPPROTO op_divb_AL_T0(void) |
396 |
{ |
397 |
unsigned int num, den, q, r; |
398 |
|
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num = (EAX & 0xffff);
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den = (T0 & 0xff);
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q = (num / den) & 0xff;
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r = (num % den) & 0xff;
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EAX = (EAX & 0xffff0000) | (r << 8) | q; |
404 |
} |
405 |
|
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void OPPROTO op_idivb_AL_T0(void) |
407 |
{ |
408 |
int num, den, q, r;
|
409 |
|
410 |
num = (int16_t)EAX; |
411 |
den = (int8_t)T0; |
412 |
q = (num / den) & 0xff;
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r = (num % den) & 0xff;
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EAX = (EAX & 0xffff0000) | (r << 8) | q; |
415 |
} |
416 |
|
417 |
void OPPROTO op_divw_AX_T0(void) |
418 |
{ |
419 |
unsigned int num, den, q, r; |
420 |
|
421 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
422 |
den = (T0 & 0xffff);
|
423 |
q = (num / den) & 0xffff;
|
424 |
r = (num % den) & 0xffff;
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425 |
EAX = (EAX & 0xffff0000) | q;
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EDX = (EDX & 0xffff0000) | r;
|
427 |
} |
428 |
|
429 |
void OPPROTO op_idivw_AX_T0(void) |
430 |
{ |
431 |
int num, den, q, r;
|
432 |
|
433 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
434 |
den = (int16_t)T0; |
435 |
q = (num / den) & 0xffff;
|
436 |
r = (num % den) & 0xffff;
|
437 |
EAX = (EAX & 0xffff0000) | q;
|
438 |
EDX = (EDX & 0xffff0000) | r;
|
439 |
} |
440 |
|
441 |
void OPPROTO op_divl_EAX_T0(void) |
442 |
{ |
443 |
unsigned int den, q, r; |
444 |
uint64_t num; |
445 |
|
446 |
num = EAX | ((uint64_t)EDX << 32);
|
447 |
den = T0; |
448 |
q = (num / den); |
449 |
r = (num % den); |
450 |
EAX = q; |
451 |
EDX = r; |
452 |
} |
453 |
|
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void OPPROTO op_idivl_EAX_T0(void) |
455 |
{ |
456 |
int den, q, r;
|
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int64_t num; |
458 |
|
459 |
num = EAX | ((uint64_t)EDX << 32);
|
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den = T0; |
461 |
q = (num / den); |
462 |
r = (num % den); |
463 |
EAX = q; |
464 |
EDX = r; |
465 |
} |
466 |
|
467 |
/* constant load & misc op */
|
468 |
|
469 |
void OPPROTO op_movl_T0_im(void) |
470 |
{ |
471 |
T0 = PARAM1; |
472 |
} |
473 |
|
474 |
void OPPROTO op_addl_T0_im(void) |
475 |
{ |
476 |
T0 += PARAM1; |
477 |
} |
478 |
|
479 |
void OPPROTO op_andl_T0_ffff(void) |
480 |
{ |
481 |
T0 = T0 & 0xffff;
|
482 |
} |
483 |
|
484 |
void OPPROTO op_movl_T0_T1(void) |
485 |
{ |
486 |
T0 = T1; |
487 |
} |
488 |
|
489 |
void OPPROTO op_movl_T1_im(void) |
490 |
{ |
491 |
T1 = PARAM1; |
492 |
} |
493 |
|
494 |
void OPPROTO op_addl_T1_im(void) |
495 |
{ |
496 |
T1 += PARAM1; |
497 |
} |
498 |
|
499 |
void OPPROTO op_movl_T1_A0(void) |
500 |
{ |
501 |
T1 = A0; |
502 |
} |
503 |
|
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void OPPROTO op_movl_A0_im(void) |
505 |
{ |
506 |
A0 = PARAM1; |
507 |
} |
508 |
|
509 |
void OPPROTO op_addl_A0_im(void) |
510 |
{ |
511 |
A0 += PARAM1; |
512 |
} |
513 |
|
514 |
void OPPROTO op_andl_A0_ffff(void) |
515 |
{ |
516 |
A0 = A0 & 0xffff;
|
517 |
} |
518 |
|
519 |
/* memory access */
|
520 |
|
521 |
void OPPROTO op_ldub_T0_A0(void) |
522 |
{ |
523 |
T0 = ldub((uint8_t *)A0); |
524 |
} |
525 |
|
526 |
void OPPROTO op_ldsb_T0_A0(void) |
527 |
{ |
528 |
T0 = ldsb((int8_t *)A0); |
529 |
} |
530 |
|
531 |
void OPPROTO op_lduw_T0_A0(void) |
532 |
{ |
533 |
T0 = lduw((uint8_t *)A0); |
534 |
} |
535 |
|
536 |
void OPPROTO op_ldsw_T0_A0(void) |
537 |
{ |
538 |
T0 = ldsw((int8_t *)A0); |
539 |
} |
540 |
|
541 |
void OPPROTO op_ldl_T0_A0(void) |
542 |
{ |
543 |
T0 = ldl((uint8_t *)A0); |
544 |
} |
545 |
|
546 |
void OPPROTO op_ldub_T1_A0(void) |
547 |
{ |
548 |
T1 = ldub((uint8_t *)A0); |
549 |
} |
550 |
|
551 |
void OPPROTO op_ldsb_T1_A0(void) |
552 |
{ |
553 |
T1 = ldsb((int8_t *)A0); |
554 |
} |
555 |
|
556 |
void OPPROTO op_lduw_T1_A0(void) |
557 |
{ |
558 |
T1 = lduw((uint8_t *)A0); |
559 |
} |
560 |
|
561 |
void OPPROTO op_ldsw_T1_A0(void) |
562 |
{ |
563 |
T1 = ldsw((int8_t *)A0); |
564 |
} |
565 |
|
566 |
void OPPROTO op_ldl_T1_A0(void) |
567 |
{ |
568 |
T1 = ldl((uint8_t *)A0); |
569 |
} |
570 |
|
571 |
void OPPROTO op_stb_T0_A0(void) |
572 |
{ |
573 |
stb((uint8_t *)A0, T0); |
574 |
} |
575 |
|
576 |
void OPPROTO op_stw_T0_A0(void) |
577 |
{ |
578 |
stw((uint8_t *)A0, T0); |
579 |
} |
580 |
|
581 |
void OPPROTO op_stl_T0_A0(void) |
582 |
{ |
583 |
stl((uint8_t *)A0, T0); |
584 |
} |
585 |
|
586 |
/* used for bit operations */
|
587 |
|
588 |
void OPPROTO op_add_bitw_A0_T1(void) |
589 |
{ |
590 |
A0 += ((int32_t)T1 >> 4) << 1; |
591 |
} |
592 |
|
593 |
void OPPROTO op_add_bitl_A0_T1(void) |
594 |
{ |
595 |
A0 += ((int32_t)T1 >> 5) << 2; |
596 |
} |
597 |
|
598 |
/* indirect jump */
|
599 |
|
600 |
void OPPROTO op_jmp_T0(void) |
601 |
{ |
602 |
EIP = T0; |
603 |
} |
604 |
|
605 |
void OPPROTO op_jmp_im(void) |
606 |
{ |
607 |
EIP = PARAM1; |
608 |
} |
609 |
|
610 |
void OPPROTO op_int_im(void) |
611 |
{ |
612 |
EIP = PARAM1; |
613 |
raise_exception(EXCP0D_GPF); |
614 |
} |
615 |
|
616 |
void OPPROTO op_int3(void) |
617 |
{ |
618 |
EIP = PARAM1; |
619 |
raise_exception(EXCP03_INT3); |
620 |
} |
621 |
|
622 |
void OPPROTO op_into(void) |
623 |
{ |
624 |
int eflags;
|
625 |
eflags = cc_table[CC_OP].compute_all(); |
626 |
if (eflags & CC_O) {
|
627 |
EIP = PARAM1; |
628 |
raise_exception(EXCP04_INTO); |
629 |
} else {
|
630 |
EIP = PARAM2; |
631 |
} |
632 |
} |
633 |
|
634 |
/* string ops */
|
635 |
|
636 |
#define ldul ldl
|
637 |
|
638 |
#define SHIFT 0 |
639 |
#include "ops_template.h" |
640 |
#undef SHIFT
|
641 |
|
642 |
#define SHIFT 1 |
643 |
#include "ops_template.h" |
644 |
#undef SHIFT
|
645 |
|
646 |
#define SHIFT 2 |
647 |
#include "ops_template.h" |
648 |
#undef SHIFT
|
649 |
|
650 |
/* sign extend */
|
651 |
|
652 |
void OPPROTO op_movsbl_T0_T0(void) |
653 |
{ |
654 |
T0 = (int8_t)T0; |
655 |
} |
656 |
|
657 |
void OPPROTO op_movzbl_T0_T0(void) |
658 |
{ |
659 |
T0 = (uint8_t)T0; |
660 |
} |
661 |
|
662 |
void OPPROTO op_movswl_T0_T0(void) |
663 |
{ |
664 |
T0 = (int16_t)T0; |
665 |
} |
666 |
|
667 |
void OPPROTO op_movzwl_T0_T0(void) |
668 |
{ |
669 |
T0 = (uint16_t)T0; |
670 |
} |
671 |
|
672 |
void OPPROTO op_movswl_EAX_AX(void) |
673 |
{ |
674 |
EAX = (int16_t)EAX; |
675 |
} |
676 |
|
677 |
void OPPROTO op_movsbw_AX_AL(void) |
678 |
{ |
679 |
EAX = (EAX & 0xffff0000) | ((int8_t)EAX & 0xffff); |
680 |
} |
681 |
|
682 |
void OPPROTO op_movslq_EDX_EAX(void) |
683 |
{ |
684 |
EDX = (int32_t)EAX >> 31;
|
685 |
} |
686 |
|
687 |
void OPPROTO op_movswl_DX_AX(void) |
688 |
{ |
689 |
EDX = (EDX & 0xffff0000) | (((int16_t)EAX >> 15) & 0xffff); |
690 |
} |
691 |
|
692 |
/* push/pop */
|
693 |
|
694 |
void op_pushl_T0(void) |
695 |
{ |
696 |
uint32_t offset; |
697 |
offset = ESP - 4;
|
698 |
stl((void *)offset, T0);
|
699 |
/* modify ESP after to handle exceptions correctly */
|
700 |
ESP = offset; |
701 |
} |
702 |
|
703 |
void op_pushw_T0(void) |
704 |
{ |
705 |
uint32_t offset; |
706 |
offset = ESP - 2;
|
707 |
stw((void *)offset, T0);
|
708 |
/* modify ESP after to handle exceptions correctly */
|
709 |
ESP = offset; |
710 |
} |
711 |
|
712 |
void op_pushl_ss32_T0(void) |
713 |
{ |
714 |
uint32_t offset; |
715 |
offset = ESP - 4;
|
716 |
stl(env->seg_cache[R_SS].base + offset, T0); |
717 |
/* modify ESP after to handle exceptions correctly */
|
718 |
ESP = offset; |
719 |
} |
720 |
|
721 |
void op_pushw_ss32_T0(void) |
722 |
{ |
723 |
uint32_t offset; |
724 |
offset = ESP - 2;
|
725 |
stw(env->seg_cache[R_SS].base + offset, T0); |
726 |
/* modify ESP after to handle exceptions correctly */
|
727 |
ESP = offset; |
728 |
} |
729 |
|
730 |
void op_pushl_ss16_T0(void) |
731 |
{ |
732 |
uint32_t offset; |
733 |
offset = (ESP - 4) & 0xffff; |
734 |
stl(env->seg_cache[R_SS].base + offset, T0); |
735 |
/* modify ESP after to handle exceptions correctly */
|
736 |
ESP = (ESP & ~0xffff) | offset;
|
737 |
} |
738 |
|
739 |
void op_pushw_ss16_T0(void) |
740 |
{ |
741 |
uint32_t offset; |
742 |
offset = (ESP - 2) & 0xffff; |
743 |
stw(env->seg_cache[R_SS].base + offset, T0); |
744 |
/* modify ESP after to handle exceptions correctly */
|
745 |
ESP = (ESP & ~0xffff) | offset;
|
746 |
} |
747 |
|
748 |
/* NOTE: ESP update is done after */
|
749 |
void op_popl_T0(void) |
750 |
{ |
751 |
T0 = ldl((void *)ESP);
|
752 |
} |
753 |
|
754 |
void op_popw_T0(void) |
755 |
{ |
756 |
T0 = lduw((void *)ESP);
|
757 |
} |
758 |
|
759 |
void op_popl_ss32_T0(void) |
760 |
{ |
761 |
T0 = ldl(env->seg_cache[R_SS].base + ESP); |
762 |
} |
763 |
|
764 |
void op_popw_ss32_T0(void) |
765 |
{ |
766 |
T0 = lduw(env->seg_cache[R_SS].base + ESP); |
767 |
} |
768 |
|
769 |
void op_popl_ss16_T0(void) |
770 |
{ |
771 |
T0 = ldl(env->seg_cache[R_SS].base + (ESP & 0xffff));
|
772 |
} |
773 |
|
774 |
void op_popw_ss16_T0(void) |
775 |
{ |
776 |
T0 = lduw(env->seg_cache[R_SS].base + (ESP & 0xffff));
|
777 |
} |
778 |
|
779 |
void op_addl_ESP_4(void) |
780 |
{ |
781 |
ESP += 4;
|
782 |
} |
783 |
|
784 |
void op_addl_ESP_2(void) |
785 |
{ |
786 |
ESP += 2;
|
787 |
} |
788 |
|
789 |
void op_addw_ESP_4(void) |
790 |
{ |
791 |
ESP = (ESP & ~0xffff) | ((ESP + 4) & 0xffff); |
792 |
} |
793 |
|
794 |
void op_addw_ESP_2(void) |
795 |
{ |
796 |
ESP = (ESP & ~0xffff) | ((ESP + 2) & 0xffff); |
797 |
} |
798 |
|
799 |
void op_addl_ESP_im(void) |
800 |
{ |
801 |
ESP += PARAM1; |
802 |
} |
803 |
|
804 |
void op_addw_ESP_im(void) |
805 |
{ |
806 |
ESP = (ESP & ~0xffff) | ((ESP + PARAM1) & 0xffff); |
807 |
} |
808 |
|
809 |
/* rdtsc */
|
810 |
#ifndef __i386__
|
811 |
uint64_t emu_time; |
812 |
#endif
|
813 |
void op_rdtsc(void) |
814 |
{ |
815 |
uint64_t val; |
816 |
#ifdef __i386__
|
817 |
asm("rdtsc" : "=A" (val)); |
818 |
#else
|
819 |
/* better than nothing: the time increases */
|
820 |
val = emu_time++; |
821 |
#endif
|
822 |
EAX = val; |
823 |
EDX = val >> 32;
|
824 |
} |
825 |
|
826 |
/* bcd */
|
827 |
|
828 |
/* XXX: exception */
|
829 |
void OPPROTO op_aam(void) |
830 |
{ |
831 |
int base = PARAM1;
|
832 |
int al, ah;
|
833 |
al = EAX & 0xff;
|
834 |
ah = al / base; |
835 |
al = al % base; |
836 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
837 |
CC_DST = al; |
838 |
} |
839 |
|
840 |
void OPPROTO op_aad(void) |
841 |
{ |
842 |
int base = PARAM1;
|
843 |
int al, ah;
|
844 |
al = EAX & 0xff;
|
845 |
ah = (EAX >> 8) & 0xff; |
846 |
al = ((ah * base) + al) & 0xff;
|
847 |
EAX = (EAX & ~0xffff) | al;
|
848 |
CC_DST = al; |
849 |
} |
850 |
|
851 |
void OPPROTO op_aaa(void) |
852 |
{ |
853 |
int icarry;
|
854 |
int al, ah, af;
|
855 |
int eflags;
|
856 |
|
857 |
eflags = cc_table[CC_OP].compute_all(); |
858 |
af = eflags & CC_A; |
859 |
al = EAX & 0xff;
|
860 |
ah = (EAX >> 8) & 0xff; |
861 |
|
862 |
icarry = (al > 0xf9);
|
863 |
if (((al & 0x0f) > 9 ) || af) { |
864 |
al = (al + 6) & 0x0f; |
865 |
ah = (ah + 1 + icarry) & 0xff; |
866 |
eflags |= CC_C | CC_A; |
867 |
} else {
|
868 |
eflags &= ~(CC_C | CC_A); |
869 |
al &= 0x0f;
|
870 |
} |
871 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
872 |
CC_SRC = eflags; |
873 |
} |
874 |
|
875 |
void OPPROTO op_aas(void) |
876 |
{ |
877 |
int icarry;
|
878 |
int al, ah, af;
|
879 |
int eflags;
|
880 |
|
881 |
eflags = cc_table[CC_OP].compute_all(); |
882 |
af = eflags & CC_A; |
883 |
al = EAX & 0xff;
|
884 |
ah = (EAX >> 8) & 0xff; |
885 |
|
886 |
icarry = (al < 6);
|
887 |
if (((al & 0x0f) > 9 ) || af) { |
888 |
al = (al - 6) & 0x0f; |
889 |
ah = (ah - 1 - icarry) & 0xff; |
890 |
eflags |= CC_C | CC_A; |
891 |
} else {
|
892 |
eflags &= ~(CC_C | CC_A); |
893 |
al &= 0x0f;
|
894 |
} |
895 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
896 |
CC_SRC = eflags; |
897 |
} |
898 |
|
899 |
void OPPROTO op_daa(void) |
900 |
{ |
901 |
int al, af, cf;
|
902 |
int eflags;
|
903 |
|
904 |
eflags = cc_table[CC_OP].compute_all(); |
905 |
cf = eflags & CC_C; |
906 |
af = eflags & CC_A; |
907 |
al = EAX & 0xff;
|
908 |
|
909 |
eflags = 0;
|
910 |
if (((al & 0x0f) > 9 ) || af) { |
911 |
al = (al + 6) & 0xff; |
912 |
eflags |= CC_A; |
913 |
} |
914 |
if ((al > 0x9f) || cf) { |
915 |
al = (al + 0x60) & 0xff; |
916 |
eflags |= CC_C; |
917 |
} |
918 |
EAX = (EAX & ~0xff) | al;
|
919 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
920 |
eflags |= (al == 0) << 6; /* zf */ |
921 |
eflags |= parity_table[al]; /* pf */
|
922 |
eflags |= (al & 0x80); /* sf */ |
923 |
CC_SRC = eflags; |
924 |
} |
925 |
|
926 |
void OPPROTO op_das(void) |
927 |
{ |
928 |
int al, al1, af, cf;
|
929 |
int eflags;
|
930 |
|
931 |
eflags = cc_table[CC_OP].compute_all(); |
932 |
cf = eflags & CC_C; |
933 |
af = eflags & CC_A; |
934 |
al = EAX & 0xff;
|
935 |
|
936 |
eflags = 0;
|
937 |
al1 = al; |
938 |
if (((al & 0x0f) > 9 ) || af) { |
939 |
eflags |= CC_A; |
940 |
if (al < 6 || cf) |
941 |
eflags |= CC_C; |
942 |
al = (al - 6) & 0xff; |
943 |
} |
944 |
if ((al1 > 0x99) || cf) { |
945 |
al = (al - 0x60) & 0xff; |
946 |
eflags |= CC_C; |
947 |
} |
948 |
EAX = (EAX & ~0xff) | al;
|
949 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
950 |
eflags |= (al == 0) << 6; /* zf */ |
951 |
eflags |= parity_table[al]; /* pf */
|
952 |
eflags |= (al & 0x80); /* sf */ |
953 |
CC_SRC = eflags; |
954 |
} |
955 |
|
956 |
/* segment handling */
|
957 |
|
958 |
void load_seg(int seg_reg, int selector) |
959 |
{ |
960 |
SegmentCache *sc; |
961 |
SegmentDescriptorTable *dt; |
962 |
int index;
|
963 |
uint32_t e1, e2; |
964 |
uint8_t *ptr; |
965 |
|
966 |
env->segs[seg_reg] = selector; |
967 |
sc = &env->seg_cache[seg_reg]; |
968 |
if (env->vm86) {
|
969 |
sc->base = (void *)(selector << 4); |
970 |
sc->limit = 0xffff;
|
971 |
sc->seg_32bit = 0;
|
972 |
} else {
|
973 |
if (selector & 0x4) |
974 |
dt = &env->ldt; |
975 |
else
|
976 |
dt = &env->gdt; |
977 |
index = selector & ~7;
|
978 |
if ((index + 7) > dt->limit) |
979 |
raise_exception(EXCP0D_GPF); |
980 |
ptr = dt->base + index; |
981 |
e1 = ldl(ptr); |
982 |
e2 = ldl(ptr + 4);
|
983 |
sc->base = (void *)((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
984 |
sc->limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
985 |
if (e2 & (1 << 23)) |
986 |
sc->limit = (sc->limit << 12) | 0xfff; |
987 |
sc->seg_32bit = (e2 >> 22) & 1; |
988 |
#if 0
|
989 |
fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
|
990 |
selector, (unsigned long)sc->base, sc->limit, sc->seg_32bit);
|
991 |
#endif
|
992 |
} |
993 |
} |
994 |
|
995 |
void OPPROTO op_movl_seg_T0(void) |
996 |
{ |
997 |
load_seg(PARAM1, T0 & 0xffff);
|
998 |
} |
999 |
|
1000 |
void OPPROTO op_movl_T0_seg(void) |
1001 |
{ |
1002 |
T0 = env->segs[PARAM1]; |
1003 |
} |
1004 |
|
1005 |
void OPPROTO op_addl_A0_seg(void) |
1006 |
{ |
1007 |
A0 += *(unsigned long *)((char *)env + PARAM1); |
1008 |
} |
1009 |
|
1010 |
/* flags handling */
|
1011 |
|
1012 |
/* slow jumps cases (compute x86 flags) */
|
1013 |
void OPPROTO op_jo_cc(void) |
1014 |
{ |
1015 |
int eflags;
|
1016 |
eflags = cc_table[CC_OP].compute_all(); |
1017 |
if (eflags & CC_O)
|
1018 |
EIP = PARAM1; |
1019 |
else
|
1020 |
EIP = PARAM2; |
1021 |
FORCE_RET(); |
1022 |
} |
1023 |
|
1024 |
void OPPROTO op_jb_cc(void) |
1025 |
{ |
1026 |
if (cc_table[CC_OP].compute_c())
|
1027 |
EIP = PARAM1; |
1028 |
else
|
1029 |
EIP = PARAM2; |
1030 |
FORCE_RET(); |
1031 |
} |
1032 |
|
1033 |
void OPPROTO op_jz_cc(void) |
1034 |
{ |
1035 |
int eflags;
|
1036 |
eflags = cc_table[CC_OP].compute_all(); |
1037 |
if (eflags & CC_Z)
|
1038 |
EIP = PARAM1; |
1039 |
else
|
1040 |
EIP = PARAM2; |
1041 |
FORCE_RET(); |
1042 |
} |
1043 |
|
1044 |
void OPPROTO op_jbe_cc(void) |
1045 |
{ |
1046 |
int eflags;
|
1047 |
eflags = cc_table[CC_OP].compute_all(); |
1048 |
if (eflags & (CC_Z | CC_C))
|
1049 |
EIP = PARAM1; |
1050 |
else
|
1051 |
EIP = PARAM2; |
1052 |
FORCE_RET(); |
1053 |
} |
1054 |
|
1055 |
void OPPROTO op_js_cc(void) |
1056 |
{ |
1057 |
int eflags;
|
1058 |
eflags = cc_table[CC_OP].compute_all(); |
1059 |
if (eflags & CC_S)
|
1060 |
EIP = PARAM1; |
1061 |
else
|
1062 |
EIP = PARAM2; |
1063 |
FORCE_RET(); |
1064 |
} |
1065 |
|
1066 |
void OPPROTO op_jp_cc(void) |
1067 |
{ |
1068 |
int eflags;
|
1069 |
eflags = cc_table[CC_OP].compute_all(); |
1070 |
if (eflags & CC_P)
|
1071 |
EIP = PARAM1; |
1072 |
else
|
1073 |
EIP = PARAM2; |
1074 |
FORCE_RET(); |
1075 |
} |
1076 |
|
1077 |
void OPPROTO op_jl_cc(void) |
1078 |
{ |
1079 |
int eflags;
|
1080 |
eflags = cc_table[CC_OP].compute_all(); |
1081 |
if ((eflags ^ (eflags >> 4)) & 0x80) |
1082 |
EIP = PARAM1; |
1083 |
else
|
1084 |
EIP = PARAM2; |
1085 |
FORCE_RET(); |
1086 |
} |
1087 |
|
1088 |
void OPPROTO op_jle_cc(void) |
1089 |
{ |
1090 |
int eflags;
|
1091 |
eflags = cc_table[CC_OP].compute_all(); |
1092 |
if (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z)) |
1093 |
EIP = PARAM1; |
1094 |
else
|
1095 |
EIP = PARAM2; |
1096 |
FORCE_RET(); |
1097 |
} |
1098 |
|
1099 |
/* slow set cases (compute x86 flags) */
|
1100 |
void OPPROTO op_seto_T0_cc(void) |
1101 |
{ |
1102 |
int eflags;
|
1103 |
eflags = cc_table[CC_OP].compute_all(); |
1104 |
T0 = (eflags >> 11) & 1; |
1105 |
} |
1106 |
|
1107 |
void OPPROTO op_setb_T0_cc(void) |
1108 |
{ |
1109 |
T0 = cc_table[CC_OP].compute_c(); |
1110 |
} |
1111 |
|
1112 |
void OPPROTO op_setz_T0_cc(void) |
1113 |
{ |
1114 |
int eflags;
|
1115 |
eflags = cc_table[CC_OP].compute_all(); |
1116 |
T0 = (eflags >> 6) & 1; |
1117 |
} |
1118 |
|
1119 |
void OPPROTO op_setbe_T0_cc(void) |
1120 |
{ |
1121 |
int eflags;
|
1122 |
eflags = cc_table[CC_OP].compute_all(); |
1123 |
T0 = (eflags & (CC_Z | CC_C)) != 0;
|
1124 |
} |
1125 |
|
1126 |
void OPPROTO op_sets_T0_cc(void) |
1127 |
{ |
1128 |
int eflags;
|
1129 |
eflags = cc_table[CC_OP].compute_all(); |
1130 |
T0 = (eflags >> 7) & 1; |
1131 |
} |
1132 |
|
1133 |
void OPPROTO op_setp_T0_cc(void) |
1134 |
{ |
1135 |
int eflags;
|
1136 |
eflags = cc_table[CC_OP].compute_all(); |
1137 |
T0 = (eflags >> 2) & 1; |
1138 |
} |
1139 |
|
1140 |
void OPPROTO op_setl_T0_cc(void) |
1141 |
{ |
1142 |
int eflags;
|
1143 |
eflags = cc_table[CC_OP].compute_all(); |
1144 |
T0 = ((eflags ^ (eflags >> 4)) >> 7) & 1; |
1145 |
} |
1146 |
|
1147 |
void OPPROTO op_setle_T0_cc(void) |
1148 |
{ |
1149 |
int eflags;
|
1150 |
eflags = cc_table[CC_OP].compute_all(); |
1151 |
T0 = (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z)) != 0; |
1152 |
} |
1153 |
|
1154 |
void OPPROTO op_xor_T0_1(void) |
1155 |
{ |
1156 |
T0 ^= 1;
|
1157 |
} |
1158 |
|
1159 |
void OPPROTO op_set_cc_op(void) |
1160 |
{ |
1161 |
CC_OP = PARAM1; |
1162 |
} |
1163 |
|
1164 |
void OPPROTO op_movl_eflags_T0(void) |
1165 |
{ |
1166 |
CC_SRC = T0; |
1167 |
DF = 1 - (2 * ((T0 >> 10) & 1)); |
1168 |
} |
1169 |
|
1170 |
/* XXX: compute only O flag */
|
1171 |
void OPPROTO op_movb_eflags_T0(void) |
1172 |
{ |
1173 |
int of;
|
1174 |
of = cc_table[CC_OP].compute_all() & CC_O; |
1175 |
CC_SRC = T0 | of; |
1176 |
} |
1177 |
|
1178 |
void OPPROTO op_movl_T0_eflags(void) |
1179 |
{ |
1180 |
T0 = cc_table[CC_OP].compute_all(); |
1181 |
T0 |= (DF & DIRECTION_FLAG); |
1182 |
} |
1183 |
|
1184 |
void OPPROTO op_cld(void) |
1185 |
{ |
1186 |
DF = 1;
|
1187 |
} |
1188 |
|
1189 |
void OPPROTO op_std(void) |
1190 |
{ |
1191 |
DF = -1;
|
1192 |
} |
1193 |
|
1194 |
void OPPROTO op_clc(void) |
1195 |
{ |
1196 |
int eflags;
|
1197 |
eflags = cc_table[CC_OP].compute_all(); |
1198 |
eflags &= ~CC_C; |
1199 |
CC_SRC = eflags; |
1200 |
} |
1201 |
|
1202 |
void OPPROTO op_stc(void) |
1203 |
{ |
1204 |
int eflags;
|
1205 |
eflags = cc_table[CC_OP].compute_all(); |
1206 |
eflags |= CC_C; |
1207 |
CC_SRC = eflags; |
1208 |
} |
1209 |
|
1210 |
void OPPROTO op_cmc(void) |
1211 |
{ |
1212 |
int eflags;
|
1213 |
eflags = cc_table[CC_OP].compute_all(); |
1214 |
eflags ^= CC_C; |
1215 |
CC_SRC = eflags; |
1216 |
} |
1217 |
|
1218 |
void OPPROTO op_salc(void) |
1219 |
{ |
1220 |
int cf;
|
1221 |
cf = cc_table[CC_OP].compute_c(); |
1222 |
EAX = (EAX & ~0xff) | ((-cf) & 0xff); |
1223 |
} |
1224 |
|
1225 |
static int compute_all_eflags(void) |
1226 |
{ |
1227 |
return CC_SRC;
|
1228 |
} |
1229 |
|
1230 |
static int compute_c_eflags(void) |
1231 |
{ |
1232 |
return CC_SRC & CC_C;
|
1233 |
} |
1234 |
|
1235 |
static int compute_c_mul(void) |
1236 |
{ |
1237 |
int cf;
|
1238 |
cf = (CC_SRC != 0);
|
1239 |
return cf;
|
1240 |
} |
1241 |
|
1242 |
static int compute_all_mul(void) |
1243 |
{ |
1244 |
int cf, pf, af, zf, sf, of;
|
1245 |
cf = (CC_SRC != 0);
|
1246 |
pf = 0; /* undefined */ |
1247 |
af = 0; /* undefined */ |
1248 |
zf = 0; /* undefined */ |
1249 |
sf = 0; /* undefined */ |
1250 |
of = cf << 11;
|
1251 |
return cf | pf | af | zf | sf | of;
|
1252 |
} |
1253 |
|
1254 |
CCTable cc_table[CC_OP_NB] = { |
1255 |
[CC_OP_DYNAMIC] = { /* should never happen */ },
|
1256 |
|
1257 |
[CC_OP_EFLAGS] = { compute_all_eflags, compute_c_eflags }, |
1258 |
|
1259 |
[CC_OP_MUL] = { compute_all_mul, compute_c_mul }, |
1260 |
|
1261 |
[CC_OP_ADDB] = { compute_all_addb, compute_c_addb }, |
1262 |
[CC_OP_ADDW] = { compute_all_addw, compute_c_addw }, |
1263 |
[CC_OP_ADDL] = { compute_all_addl, compute_c_addl }, |
1264 |
|
1265 |
[CC_OP_ADCB] = { compute_all_adcb, compute_c_adcb }, |
1266 |
[CC_OP_ADCW] = { compute_all_adcw, compute_c_adcw }, |
1267 |
[CC_OP_ADCL] = { compute_all_adcl, compute_c_adcl }, |
1268 |
|
1269 |
[CC_OP_SUBB] = { compute_all_subb, compute_c_subb }, |
1270 |
[CC_OP_SUBW] = { compute_all_subw, compute_c_subw }, |
1271 |
[CC_OP_SUBL] = { compute_all_subl, compute_c_subl }, |
1272 |
|
1273 |
[CC_OP_SBBB] = { compute_all_sbbb, compute_c_sbbb }, |
1274 |
[CC_OP_SBBW] = { compute_all_sbbw, compute_c_sbbw }, |
1275 |
[CC_OP_SBBL] = { compute_all_sbbl, compute_c_sbbl }, |
1276 |
|
1277 |
[CC_OP_LOGICB] = { compute_all_logicb, compute_c_logicb }, |
1278 |
[CC_OP_LOGICW] = { compute_all_logicw, compute_c_logicw }, |
1279 |
[CC_OP_LOGICL] = { compute_all_logicl, compute_c_logicl }, |
1280 |
|
1281 |
[CC_OP_INCB] = { compute_all_incb, compute_c_incl }, |
1282 |
[CC_OP_INCW] = { compute_all_incw, compute_c_incl }, |
1283 |
[CC_OP_INCL] = { compute_all_incl, compute_c_incl }, |
1284 |
|
1285 |
[CC_OP_DECB] = { compute_all_decb, compute_c_incl }, |
1286 |
[CC_OP_DECW] = { compute_all_decw, compute_c_incl }, |
1287 |
[CC_OP_DECL] = { compute_all_decl, compute_c_incl }, |
1288 |
|
1289 |
[CC_OP_SHLB] = { compute_all_shlb, compute_c_shll }, |
1290 |
[CC_OP_SHLW] = { compute_all_shlw, compute_c_shll }, |
1291 |
[CC_OP_SHLL] = { compute_all_shll, compute_c_shll }, |
1292 |
|
1293 |
[CC_OP_SARB] = { compute_all_sarb, compute_c_shll }, |
1294 |
[CC_OP_SARW] = { compute_all_sarw, compute_c_shll }, |
1295 |
[CC_OP_SARL] = { compute_all_sarl, compute_c_shll }, |
1296 |
}; |
1297 |
|
1298 |
/* floating point support */
|
1299 |
|
1300 |
#ifdef USE_X86LDOUBLE
|
1301 |
/* use long double functions */
|
1302 |
#define lrint lrintl
|
1303 |
#define llrint llrintl
|
1304 |
#define fabs fabsl
|
1305 |
#define sin sinl
|
1306 |
#define cos cosl
|
1307 |
#define sqrt sqrtl
|
1308 |
#define pow powl
|
1309 |
#define log logl
|
1310 |
#define tan tanl
|
1311 |
#define atan2 atan2l
|
1312 |
#define floor floorl
|
1313 |
#define ceil ceill
|
1314 |
#define rint rintl
|
1315 |
#endif
|
1316 |
|
1317 |
extern int lrint(CPU86_LDouble x); |
1318 |
extern int64_t llrint(CPU86_LDouble x);
|
1319 |
extern CPU86_LDouble fabs(CPU86_LDouble x);
|
1320 |
extern CPU86_LDouble sin(CPU86_LDouble x);
|
1321 |
extern CPU86_LDouble cos(CPU86_LDouble x);
|
1322 |
extern CPU86_LDouble sqrt(CPU86_LDouble x);
|
1323 |
extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
|
1324 |
extern CPU86_LDouble log(CPU86_LDouble x);
|
1325 |
extern CPU86_LDouble tan(CPU86_LDouble x);
|
1326 |
extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
|
1327 |
extern CPU86_LDouble floor(CPU86_LDouble x);
|
1328 |
extern CPU86_LDouble ceil(CPU86_LDouble x);
|
1329 |
extern CPU86_LDouble rint(CPU86_LDouble x);
|
1330 |
|
1331 |
#define RC_MASK 0xc00 |
1332 |
#define RC_NEAR 0x000 |
1333 |
#define RC_DOWN 0x400 |
1334 |
#define RC_UP 0x800 |
1335 |
#define RC_CHOP 0xc00 |
1336 |
|
1337 |
#define MAXTAN 9223372036854775808.0 |
1338 |
|
1339 |
#ifdef USE_X86LDOUBLE
|
1340 |
|
1341 |
/* only for x86 */
|
1342 |
typedef union { |
1343 |
long double d; |
1344 |
struct {
|
1345 |
unsigned long long lower; |
1346 |
unsigned short upper; |
1347 |
} l; |
1348 |
} CPU86_LDoubleU; |
1349 |
|
1350 |
/* the following deal with x86 long double-precision numbers */
|
1351 |
#define MAXEXPD 0x7fff |
1352 |
#define EXPBIAS 16383 |
1353 |
#define EXPD(fp) (fp.l.upper & 0x7fff) |
1354 |
#define SIGND(fp) ((fp.l.upper) & 0x8000) |
1355 |
#define MANTD(fp) (fp.l.lower)
|
1356 |
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS |
1357 |
|
1358 |
#else
|
1359 |
|
1360 |
typedef union { |
1361 |
double d;
|
1362 |
#ifndef WORDS_BIGENDIAN
|
1363 |
struct {
|
1364 |
unsigned long lower; |
1365 |
long upper;
|
1366 |
} l; |
1367 |
#else
|
1368 |
struct {
|
1369 |
long upper;
|
1370 |
unsigned long lower; |
1371 |
} l; |
1372 |
#endif
|
1373 |
long long ll; |
1374 |
} CPU86_LDoubleU; |
1375 |
|
1376 |
/* the following deal with IEEE double-precision numbers */
|
1377 |
#define MAXEXPD 0x7ff |
1378 |
#define EXPBIAS 1023 |
1379 |
#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF) |
1380 |
#define SIGND(fp) ((fp.l.upper) & 0x80000000) |
1381 |
#define MANTD(fp) (fp.ll & ((1LL << 52) - 1)) |
1382 |
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20) |
1383 |
#endif
|
1384 |
|
1385 |
/* fp load FT0 */
|
1386 |
|
1387 |
void OPPROTO op_flds_FT0_A0(void) |
1388 |
{ |
1389 |
FT0 = ldfl((void *)A0);
|
1390 |
} |
1391 |
|
1392 |
void OPPROTO op_fldl_FT0_A0(void) |
1393 |
{ |
1394 |
FT0 = ldfq((void *)A0);
|
1395 |
} |
1396 |
|
1397 |
/* helpers are needed to avoid static constant reference. XXX: find a better way */
|
1398 |
#ifdef USE_INT_TO_FLOAT_HELPERS
|
1399 |
|
1400 |
void helper_fild_FT0_A0(void) |
1401 |
{ |
1402 |
FT0 = (CPU86_LDouble)ldsw((void *)A0);
|
1403 |
} |
1404 |
|
1405 |
void helper_fildl_FT0_A0(void) |
1406 |
{ |
1407 |
FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
1408 |
} |
1409 |
|
1410 |
void helper_fildll_FT0_A0(void) |
1411 |
{ |
1412 |
FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
1413 |
} |
1414 |
|
1415 |
void OPPROTO op_fild_FT0_A0(void) |
1416 |
{ |
1417 |
helper_fild_FT0_A0(); |
1418 |
} |
1419 |
|
1420 |
void OPPROTO op_fildl_FT0_A0(void) |
1421 |
{ |
1422 |
helper_fildl_FT0_A0(); |
1423 |
} |
1424 |
|
1425 |
void OPPROTO op_fildll_FT0_A0(void) |
1426 |
{ |
1427 |
helper_fildll_FT0_A0(); |
1428 |
} |
1429 |
|
1430 |
#else
|
1431 |
|
1432 |
void OPPROTO op_fild_FT0_A0(void) |
1433 |
{ |
1434 |
FT0 = (CPU86_LDouble)ldsw((void *)A0);
|
1435 |
} |
1436 |
|
1437 |
void OPPROTO op_fildl_FT0_A0(void) |
1438 |
{ |
1439 |
FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
1440 |
} |
1441 |
|
1442 |
void OPPROTO op_fildll_FT0_A0(void) |
1443 |
{ |
1444 |
FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
1445 |
} |
1446 |
#endif
|
1447 |
|
1448 |
/* fp load ST0 */
|
1449 |
|
1450 |
void OPPROTO op_flds_ST0_A0(void) |
1451 |
{ |
1452 |
ST0 = ldfl((void *)A0);
|
1453 |
} |
1454 |
|
1455 |
void OPPROTO op_fldl_ST0_A0(void) |
1456 |
{ |
1457 |
ST0 = ldfq((void *)A0);
|
1458 |
} |
1459 |
|
1460 |
#ifdef USE_X86LDOUBLE
|
1461 |
void OPPROTO op_fldt_ST0_A0(void) |
1462 |
{ |
1463 |
ST0 = *(long double *)A0; |
1464 |
} |
1465 |
#else
|
1466 |
void helper_fldt_ST0_A0(void) |
1467 |
{ |
1468 |
CPU86_LDoubleU temp; |
1469 |
int upper, e;
|
1470 |
/* mantissa */
|
1471 |
upper = lduw((uint8_t *)A0 + 8);
|
1472 |
/* XXX: handle overflow ? */
|
1473 |
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ |
1474 |
e |= (upper >> 4) & 0x800; /* sign */ |
1475 |
temp.ll = ((ldq((void *)A0) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e << 52); |
1476 |
ST0 = temp.d; |
1477 |
} |
1478 |
|
1479 |
void OPPROTO op_fldt_ST0_A0(void) |
1480 |
{ |
1481 |
helper_fldt_ST0_A0(); |
1482 |
} |
1483 |
#endif
|
1484 |
|
1485 |
/* helpers are needed to avoid static constant reference. XXX: find a better way */
|
1486 |
#ifdef USE_INT_TO_FLOAT_HELPERS
|
1487 |
|
1488 |
void helper_fild_ST0_A0(void) |
1489 |
{ |
1490 |
ST0 = (CPU86_LDouble)ldsw((void *)A0);
|
1491 |
} |
1492 |
|
1493 |
void helper_fildl_ST0_A0(void) |
1494 |
{ |
1495 |
ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
1496 |
} |
1497 |
|
1498 |
void helper_fildll_ST0_A0(void) |
1499 |
{ |
1500 |
ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
1501 |
} |
1502 |
|
1503 |
void OPPROTO op_fild_ST0_A0(void) |
1504 |
{ |
1505 |
helper_fild_ST0_A0(); |
1506 |
} |
1507 |
|
1508 |
void OPPROTO op_fildl_ST0_A0(void) |
1509 |
{ |
1510 |
helper_fildl_ST0_A0(); |
1511 |
} |
1512 |
|
1513 |
void OPPROTO op_fildll_ST0_A0(void) |
1514 |
{ |
1515 |
helper_fildll_ST0_A0(); |
1516 |
} |
1517 |
|
1518 |
#else
|
1519 |
|
1520 |
void OPPROTO op_fild_ST0_A0(void) |
1521 |
{ |
1522 |
ST0 = (CPU86_LDouble)ldsw((void *)A0);
|
1523 |
} |
1524 |
|
1525 |
void OPPROTO op_fildl_ST0_A0(void) |
1526 |
{ |
1527 |
ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
1528 |
} |
1529 |
|
1530 |
void OPPROTO op_fildll_ST0_A0(void) |
1531 |
{ |
1532 |
ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
1533 |
} |
1534 |
|
1535 |
#endif
|
1536 |
|
1537 |
/* fp store */
|
1538 |
|
1539 |
void OPPROTO op_fsts_ST0_A0(void) |
1540 |
{ |
1541 |
stfl((void *)A0, (float)ST0); |
1542 |
} |
1543 |
|
1544 |
void OPPROTO op_fstl_ST0_A0(void) |
1545 |
{ |
1546 |
stfq((void *)A0, (double)ST0); |
1547 |
} |
1548 |
|
1549 |
#ifdef USE_X86LDOUBLE
|
1550 |
void OPPROTO op_fstt_ST0_A0(void) |
1551 |
{ |
1552 |
*(long double *)A0 = ST0; |
1553 |
} |
1554 |
#else
|
1555 |
void helper_fstt_ST0_A0(void) |
1556 |
{ |
1557 |
CPU86_LDoubleU temp; |
1558 |
int e;
|
1559 |
temp.d = ST0; |
1560 |
/* mantissa */
|
1561 |
stq((void *)A0, (MANTD(temp) << 11) | (1LL << 63)); |
1562 |
/* exponent + sign */
|
1563 |
e = EXPD(temp) - EXPBIAS + 16383;
|
1564 |
e |= SIGND(temp) >> 16;
|
1565 |
stw((uint8_t *)A0 + 8, e);
|
1566 |
} |
1567 |
|
1568 |
void OPPROTO op_fstt_ST0_A0(void) |
1569 |
{ |
1570 |
helper_fstt_ST0_A0(); |
1571 |
} |
1572 |
#endif
|
1573 |
|
1574 |
void OPPROTO op_fist_ST0_A0(void) |
1575 |
{ |
1576 |
int val;
|
1577 |
val = lrint(ST0); |
1578 |
stw((void *)A0, val);
|
1579 |
} |
1580 |
|
1581 |
void OPPROTO op_fistl_ST0_A0(void) |
1582 |
{ |
1583 |
int val;
|
1584 |
val = lrint(ST0); |
1585 |
stl((void *)A0, val);
|
1586 |
} |
1587 |
|
1588 |
void OPPROTO op_fistll_ST0_A0(void) |
1589 |
{ |
1590 |
int64_t val; |
1591 |
val = llrint(ST0); |
1592 |
stq((void *)A0, val);
|
1593 |
} |
1594 |
|
1595 |
/* BCD ops */
|
1596 |
|
1597 |
#define MUL10(iv) ( iv + iv + (iv << 3) ) |
1598 |
|
1599 |
void helper_fbld_ST0_A0(void) |
1600 |
{ |
1601 |
uint8_t *seg; |
1602 |
CPU86_LDouble fpsrcop; |
1603 |
int m32i;
|
1604 |
unsigned int v; |
1605 |
|
1606 |
/* in this code, seg/m32i will be used as temporary ptr/int */
|
1607 |
seg = (uint8_t *)A0 + 8;
|
1608 |
v = ldub(seg--); |
1609 |
/* XXX: raise exception */
|
1610 |
if (v != 0) |
1611 |
return;
|
1612 |
v = ldub(seg--); |
1613 |
/* XXX: raise exception */
|
1614 |
if ((v & 0xf0) != 0) |
1615 |
return;
|
1616 |
m32i = v; /* <-- d14 */
|
1617 |
v = ldub(seg--); |
1618 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d13 */ |
1619 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d12 */ |
1620 |
v = ldub(seg--); |
1621 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d11 */ |
1622 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d10 */ |
1623 |
v = ldub(seg--); |
1624 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d9 */ |
1625 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d8 */ |
1626 |
fpsrcop = ((CPU86_LDouble)m32i) * 100000000.0; |
1627 |
|
1628 |
v = ldub(seg--); |
1629 |
m32i = (v >> 4); /* <-- d7 */ |
1630 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d6 */ |
1631 |
v = ldub(seg--); |
1632 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d5 */ |
1633 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d4 */ |
1634 |
v = ldub(seg--); |
1635 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d3 */ |
1636 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d2 */ |
1637 |
v = ldub(seg); |
1638 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d1 */ |
1639 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d0 */ |
1640 |
fpsrcop += ((CPU86_LDouble)m32i); |
1641 |
if ( ldub(seg+9) & 0x80 ) |
1642 |
fpsrcop = -fpsrcop; |
1643 |
ST0 = fpsrcop; |
1644 |
} |
1645 |
|
1646 |
void OPPROTO op_fbld_ST0_A0(void) |
1647 |
{ |
1648 |
helper_fbld_ST0_A0(); |
1649 |
} |
1650 |
|
1651 |
void helper_fbst_ST0_A0(void) |
1652 |
{ |
1653 |
CPU86_LDouble fptemp; |
1654 |
CPU86_LDouble fpsrcop; |
1655 |
int v;
|
1656 |
uint8_t *mem_ref, *mem_end; |
1657 |
|
1658 |
fpsrcop = rint(ST0); |
1659 |
mem_ref = (uint8_t *)A0; |
1660 |
mem_end = mem_ref + 8;
|
1661 |
if ( fpsrcop < 0.0 ) { |
1662 |
stw(mem_end, 0x8000);
|
1663 |
fpsrcop = -fpsrcop; |
1664 |
} else {
|
1665 |
stw(mem_end, 0x0000);
|
1666 |
} |
1667 |
while (mem_ref < mem_end) {
|
1668 |
if (fpsrcop == 0.0) |
1669 |
break;
|
1670 |
fptemp = floor(fpsrcop/10.0); |
1671 |
v = ((int)(fpsrcop - fptemp*10.0)); |
1672 |
if (fptemp == 0.0) { |
1673 |
stb(mem_ref++, v); |
1674 |
break;
|
1675 |
} |
1676 |
fpsrcop = fptemp; |
1677 |
fptemp = floor(fpsrcop/10.0); |
1678 |
v |= (((int)(fpsrcop - fptemp*10.0)) << 4); |
1679 |
stb(mem_ref++, v); |
1680 |
fpsrcop = fptemp; |
1681 |
} |
1682 |
while (mem_ref < mem_end) {
|
1683 |
stb(mem_ref++, 0);
|
1684 |
} |
1685 |
} |
1686 |
|
1687 |
void OPPROTO op_fbst_ST0_A0(void) |
1688 |
{ |
1689 |
helper_fbst_ST0_A0(); |
1690 |
} |
1691 |
|
1692 |
/* FPU move */
|
1693 |
|
1694 |
static inline void fpush(void) |
1695 |
{ |
1696 |
env->fpstt = (env->fpstt - 1) & 7; |
1697 |
env->fptags[env->fpstt] = 0; /* validate stack entry */ |
1698 |
} |
1699 |
|
1700 |
static inline void fpop(void) |
1701 |
{ |
1702 |
env->fptags[env->fpstt] = 1; /* invvalidate stack entry */ |
1703 |
env->fpstt = (env->fpstt + 1) & 7; |
1704 |
} |
1705 |
|
1706 |
void OPPROTO op_fpush(void) |
1707 |
{ |
1708 |
fpush(); |
1709 |
} |
1710 |
|
1711 |
void OPPROTO op_fpop(void) |
1712 |
{ |
1713 |
fpop(); |
1714 |
} |
1715 |
|
1716 |
void OPPROTO op_fdecstp(void) |
1717 |
{ |
1718 |
env->fpstt = (env->fpstt - 1) & 7; |
1719 |
env->fpus &= (~0x4700);
|
1720 |
} |
1721 |
|
1722 |
void OPPROTO op_fincstp(void) |
1723 |
{ |
1724 |
env->fpstt = (env->fpstt + 1) & 7; |
1725 |
env->fpus &= (~0x4700);
|
1726 |
} |
1727 |
|
1728 |
void OPPROTO op_fmov_ST0_FT0(void) |
1729 |
{ |
1730 |
ST0 = FT0; |
1731 |
} |
1732 |
|
1733 |
void OPPROTO op_fmov_FT0_STN(void) |
1734 |
{ |
1735 |
FT0 = ST(PARAM1); |
1736 |
} |
1737 |
|
1738 |
void OPPROTO op_fmov_ST0_STN(void) |
1739 |
{ |
1740 |
ST0 = ST(PARAM1); |
1741 |
} |
1742 |
|
1743 |
void OPPROTO op_fmov_STN_ST0(void) |
1744 |
{ |
1745 |
ST(PARAM1) = ST0; |
1746 |
} |
1747 |
|
1748 |
void OPPROTO op_fxchg_ST0_STN(void) |
1749 |
{ |
1750 |
CPU86_LDouble tmp; |
1751 |
tmp = ST(PARAM1); |
1752 |
ST(PARAM1) = ST0; |
1753 |
ST0 = tmp; |
1754 |
} |
1755 |
|
1756 |
/* FPU operations */
|
1757 |
|
1758 |
/* XXX: handle nans */
|
1759 |
void OPPROTO op_fcom_ST0_FT0(void) |
1760 |
{ |
1761 |
env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */ |
1762 |
if (ST0 < FT0)
|
1763 |
env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ |
1764 |
else if (ST0 == FT0) |
1765 |
env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ |
1766 |
FORCE_RET(); |
1767 |
} |
1768 |
|
1769 |
/* XXX: handle nans */
|
1770 |
void OPPROTO op_fucom_ST0_FT0(void) |
1771 |
{ |
1772 |
env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */ |
1773 |
if (ST0 < FT0)
|
1774 |
env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ |
1775 |
else if (ST0 == FT0) |
1776 |
env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ |
1777 |
FORCE_RET(); |
1778 |
} |
1779 |
|
1780 |
void OPPROTO op_fadd_ST0_FT0(void) |
1781 |
{ |
1782 |
ST0 += FT0; |
1783 |
} |
1784 |
|
1785 |
void OPPROTO op_fmul_ST0_FT0(void) |
1786 |
{ |
1787 |
ST0 *= FT0; |
1788 |
} |
1789 |
|
1790 |
void OPPROTO op_fsub_ST0_FT0(void) |
1791 |
{ |
1792 |
ST0 -= FT0; |
1793 |
} |
1794 |
|
1795 |
void OPPROTO op_fsubr_ST0_FT0(void) |
1796 |
{ |
1797 |
ST0 = FT0 - ST0; |
1798 |
} |
1799 |
|
1800 |
void OPPROTO op_fdiv_ST0_FT0(void) |
1801 |
{ |
1802 |
ST0 /= FT0; |
1803 |
} |
1804 |
|
1805 |
void OPPROTO op_fdivr_ST0_FT0(void) |
1806 |
{ |
1807 |
ST0 = FT0 / ST0; |
1808 |
} |
1809 |
|
1810 |
/* fp operations between STN and ST0 */
|
1811 |
|
1812 |
void OPPROTO op_fadd_STN_ST0(void) |
1813 |
{ |
1814 |
ST(PARAM1) += ST0; |
1815 |
} |
1816 |
|
1817 |
void OPPROTO op_fmul_STN_ST0(void) |
1818 |
{ |
1819 |
ST(PARAM1) *= ST0; |
1820 |
} |
1821 |
|
1822 |
void OPPROTO op_fsub_STN_ST0(void) |
1823 |
{ |
1824 |
ST(PARAM1) -= ST0; |
1825 |
} |
1826 |
|
1827 |
void OPPROTO op_fsubr_STN_ST0(void) |
1828 |
{ |
1829 |
CPU86_LDouble *p; |
1830 |
p = &ST(PARAM1); |
1831 |
*p = ST0 - *p; |
1832 |
} |
1833 |
|
1834 |
void OPPROTO op_fdiv_STN_ST0(void) |
1835 |
{ |
1836 |
ST(PARAM1) /= ST0; |
1837 |
} |
1838 |
|
1839 |
void OPPROTO op_fdivr_STN_ST0(void) |
1840 |
{ |
1841 |
CPU86_LDouble *p; |
1842 |
p = &ST(PARAM1); |
1843 |
*p = ST0 / *p; |
1844 |
} |
1845 |
|
1846 |
/* misc FPU operations */
|
1847 |
void OPPROTO op_fchs_ST0(void) |
1848 |
{ |
1849 |
ST0 = -ST0; |
1850 |
} |
1851 |
|
1852 |
void OPPROTO op_fabs_ST0(void) |
1853 |
{ |
1854 |
ST0 = fabs(ST0); |
1855 |
} |
1856 |
|
1857 |
void helper_fxam_ST0(void) |
1858 |
{ |
1859 |
CPU86_LDoubleU temp; |
1860 |
int expdif;
|
1861 |
|
1862 |
temp.d = ST0; |
1863 |
|
1864 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
1865 |
if (SIGND(temp))
|
1866 |
env->fpus |= 0x200; /* C1 <-- 1 */ |
1867 |
|
1868 |
expdif = EXPD(temp); |
1869 |
if (expdif == MAXEXPD) {
|
1870 |
if (MANTD(temp) == 0) |
1871 |
env->fpus |= 0x500 /*Infinity*/; |
1872 |
else
|
1873 |
env->fpus |= 0x100 /*NaN*/; |
1874 |
} else if (expdif == 0) { |
1875 |
if (MANTD(temp) == 0) |
1876 |
env->fpus |= 0x4000 /*Zero*/; |
1877 |
else
|
1878 |
env->fpus |= 0x4400 /*Denormal*/; |
1879 |
} else {
|
1880 |
env->fpus |= 0x400;
|
1881 |
} |
1882 |
} |
1883 |
|
1884 |
void OPPROTO op_fxam_ST0(void) |
1885 |
{ |
1886 |
helper_fxam_ST0(); |
1887 |
} |
1888 |
|
1889 |
void OPPROTO op_fld1_ST0(void) |
1890 |
{ |
1891 |
ST0 = *(CPU86_LDouble *)&f15rk[1];
|
1892 |
} |
1893 |
|
1894 |
void OPPROTO op_fldl2t_ST0(void) |
1895 |
{ |
1896 |
ST0 = *(CPU86_LDouble *)&f15rk[6];
|
1897 |
} |
1898 |
|
1899 |
void OPPROTO op_fldl2e_ST0(void) |
1900 |
{ |
1901 |
ST0 = *(CPU86_LDouble *)&f15rk[5];
|
1902 |
} |
1903 |
|
1904 |
void OPPROTO op_fldpi_ST0(void) |
1905 |
{ |
1906 |
ST0 = *(CPU86_LDouble *)&f15rk[2];
|
1907 |
} |
1908 |
|
1909 |
void OPPROTO op_fldlg2_ST0(void) |
1910 |
{ |
1911 |
ST0 = *(CPU86_LDouble *)&f15rk[3];
|
1912 |
} |
1913 |
|
1914 |
void OPPROTO op_fldln2_ST0(void) |
1915 |
{ |
1916 |
ST0 = *(CPU86_LDouble *)&f15rk[4];
|
1917 |
} |
1918 |
|
1919 |
void OPPROTO op_fldz_ST0(void) |
1920 |
{ |
1921 |
ST0 = *(CPU86_LDouble *)&f15rk[0];
|
1922 |
} |
1923 |
|
1924 |
void OPPROTO op_fldz_FT0(void) |
1925 |
{ |
1926 |
ST0 = *(CPU86_LDouble *)&f15rk[0];
|
1927 |
} |
1928 |
|
1929 |
void helper_f2xm1(void) |
1930 |
{ |
1931 |
ST0 = pow(2.0,ST0) - 1.0; |
1932 |
} |
1933 |
|
1934 |
void helper_fyl2x(void) |
1935 |
{ |
1936 |
CPU86_LDouble fptemp; |
1937 |
|
1938 |
fptemp = ST0; |
1939 |
if (fptemp>0.0){ |
1940 |
fptemp = log(fptemp)/log(2.0); /* log2(ST) */ |
1941 |
ST1 *= fptemp; |
1942 |
fpop(); |
1943 |
} else {
|
1944 |
env->fpus &= (~0x4700);
|
1945 |
env->fpus |= 0x400;
|
1946 |
} |
1947 |
} |
1948 |
|
1949 |
void helper_fptan(void) |
1950 |
{ |
1951 |
CPU86_LDouble fptemp; |
1952 |
|
1953 |
fptemp = ST0; |
1954 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
1955 |
env->fpus |= 0x400;
|
1956 |
} else {
|
1957 |
ST0 = tan(fptemp); |
1958 |
fpush(); |
1959 |
ST0 = 1.0; |
1960 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
1961 |
/* the above code is for |arg| < 2**52 only */
|
1962 |
} |
1963 |
} |
1964 |
|
1965 |
void helper_fpatan(void) |
1966 |
{ |
1967 |
CPU86_LDouble fptemp, fpsrcop; |
1968 |
|
1969 |
fpsrcop = ST1; |
1970 |
fptemp = ST0; |
1971 |
ST1 = atan2(fpsrcop,fptemp); |
1972 |
fpop(); |
1973 |
} |
1974 |
|
1975 |
void helper_fxtract(void) |
1976 |
{ |
1977 |
CPU86_LDoubleU temp; |
1978 |
unsigned int expdif; |
1979 |
|
1980 |
temp.d = ST0; |
1981 |
expdif = EXPD(temp) - EXPBIAS; |
1982 |
/*DP exponent bias*/
|
1983 |
ST0 = expdif; |
1984 |
fpush(); |
1985 |
BIASEXPONENT(temp); |
1986 |
ST0 = temp.d; |
1987 |
} |
1988 |
|
1989 |
void helper_fprem1(void) |
1990 |
{ |
1991 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
1992 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
1993 |
int expdif;
|
1994 |
int q;
|
1995 |
|
1996 |
fpsrcop = ST0; |
1997 |
fptemp = ST1; |
1998 |
fpsrcop1.d = fpsrcop; |
1999 |
fptemp1.d = fptemp; |
2000 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
2001 |
if (expdif < 53) { |
2002 |
dblq = fpsrcop / fptemp; |
2003 |
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq); |
2004 |
ST0 = fpsrcop - fptemp*dblq; |
2005 |
q = (int)dblq; /* cutting off top bits is assumed here */ |
2006 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
2007 |
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
2008 |
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */ |
2009 |
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */ |
2010 |
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */ |
2011 |
} else {
|
2012 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
2013 |
fptemp = pow(2.0, expdif-50); |
2014 |
fpsrcop = (ST0 / ST1) / fptemp; |
2015 |
/* fpsrcop = integer obtained by rounding to the nearest */
|
2016 |
fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)? |
2017 |
floor(fpsrcop): ceil(fpsrcop); |
2018 |
ST0 -= (ST1 * fpsrcop * fptemp); |
2019 |
} |
2020 |
} |
2021 |
|
2022 |
void helper_fprem(void) |
2023 |
{ |
2024 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
2025 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
2026 |
int expdif;
|
2027 |
int q;
|
2028 |
|
2029 |
fpsrcop = ST0; |
2030 |
fptemp = ST1; |
2031 |
fpsrcop1.d = fpsrcop; |
2032 |
fptemp1.d = fptemp; |
2033 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
2034 |
if ( expdif < 53 ) { |
2035 |
dblq = fpsrcop / fptemp; |
2036 |
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq); |
2037 |
ST0 = fpsrcop - fptemp*dblq; |
2038 |
q = (int)dblq; /* cutting off top bits is assumed here */ |
2039 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
2040 |
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
2041 |
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */ |
2042 |
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */ |
2043 |
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */ |
2044 |
} else {
|
2045 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
2046 |
fptemp = pow(2.0, expdif-50); |
2047 |
fpsrcop = (ST0 / ST1) / fptemp; |
2048 |
/* fpsrcop = integer obtained by chopping */
|
2049 |
fpsrcop = (fpsrcop < 0.0)? |
2050 |
-(floor(fabs(fpsrcop))): floor(fpsrcop); |
2051 |
ST0 -= (ST1 * fpsrcop * fptemp); |
2052 |
} |
2053 |
} |
2054 |
|
2055 |
void helper_fyl2xp1(void) |
2056 |
{ |
2057 |
CPU86_LDouble fptemp; |
2058 |
|
2059 |
fptemp = ST0; |
2060 |
if ((fptemp+1.0)>0.0) { |
2061 |
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */ |
2062 |
ST1 *= fptemp; |
2063 |
fpop(); |
2064 |
} else {
|
2065 |
env->fpus &= (~0x4700);
|
2066 |
env->fpus |= 0x400;
|
2067 |
} |
2068 |
} |
2069 |
|
2070 |
void helper_fsqrt(void) |
2071 |
{ |
2072 |
CPU86_LDouble fptemp; |
2073 |
|
2074 |
fptemp = ST0; |
2075 |
if (fptemp<0.0) { |
2076 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
2077 |
env->fpus |= 0x400;
|
2078 |
} |
2079 |
ST0 = sqrt(fptemp); |
2080 |
} |
2081 |
|
2082 |
void helper_fsincos(void) |
2083 |
{ |
2084 |
CPU86_LDouble fptemp; |
2085 |
|
2086 |
fptemp = ST0; |
2087 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
2088 |
env->fpus |= 0x400;
|
2089 |
} else {
|
2090 |
ST0 = sin(fptemp); |
2091 |
fpush(); |
2092 |
ST0 = cos(fptemp); |
2093 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
2094 |
/* the above code is for |arg| < 2**63 only */
|
2095 |
} |
2096 |
} |
2097 |
|
2098 |
void helper_frndint(void) |
2099 |
{ |
2100 |
ST0 = rint(ST0); |
2101 |
} |
2102 |
|
2103 |
void helper_fscale(void) |
2104 |
{ |
2105 |
CPU86_LDouble fpsrcop, fptemp; |
2106 |
|
2107 |
fpsrcop = 2.0; |
2108 |
fptemp = pow(fpsrcop,ST1); |
2109 |
ST0 *= fptemp; |
2110 |
} |
2111 |
|
2112 |
void helper_fsin(void) |
2113 |
{ |
2114 |
CPU86_LDouble fptemp; |
2115 |
|
2116 |
fptemp = ST0; |
2117 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
2118 |
env->fpus |= 0x400;
|
2119 |
} else {
|
2120 |
ST0 = sin(fptemp); |
2121 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
2122 |
/* the above code is for |arg| < 2**53 only */
|
2123 |
} |
2124 |
} |
2125 |
|
2126 |
void helper_fcos(void) |
2127 |
{ |
2128 |
CPU86_LDouble fptemp; |
2129 |
|
2130 |
fptemp = ST0; |
2131 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
2132 |
env->fpus |= 0x400;
|
2133 |
} else {
|
2134 |
ST0 = cos(fptemp); |
2135 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
2136 |
/* the above code is for |arg5 < 2**63 only */
|
2137 |
} |
2138 |
} |
2139 |
|
2140 |
/* associated heplers to reduce generated code length and to simplify
|
2141 |
relocation (FP constants are usually stored in .rodata section) */
|
2142 |
|
2143 |
void OPPROTO op_f2xm1(void) |
2144 |
{ |
2145 |
helper_f2xm1(); |
2146 |
} |
2147 |
|
2148 |
void OPPROTO op_fyl2x(void) |
2149 |
{ |
2150 |
helper_fyl2x(); |
2151 |
} |
2152 |
|
2153 |
void OPPROTO op_fptan(void) |
2154 |
{ |
2155 |
helper_fptan(); |
2156 |
} |
2157 |
|
2158 |
void OPPROTO op_fpatan(void) |
2159 |
{ |
2160 |
helper_fpatan(); |
2161 |
} |
2162 |
|
2163 |
void OPPROTO op_fxtract(void) |
2164 |
{ |
2165 |
helper_fxtract(); |
2166 |
} |
2167 |
|
2168 |
void OPPROTO op_fprem1(void) |
2169 |
{ |
2170 |
helper_fprem1(); |
2171 |
} |
2172 |
|
2173 |
|
2174 |
void OPPROTO op_fprem(void) |
2175 |
{ |
2176 |
helper_fprem(); |
2177 |
} |
2178 |
|
2179 |
void OPPROTO op_fyl2xp1(void) |
2180 |
{ |
2181 |
helper_fyl2xp1(); |
2182 |
} |
2183 |
|
2184 |
void OPPROTO op_fsqrt(void) |
2185 |
{ |
2186 |
helper_fsqrt(); |
2187 |
} |
2188 |
|
2189 |
void OPPROTO op_fsincos(void) |
2190 |
{ |
2191 |
helper_fsincos(); |
2192 |
} |
2193 |
|
2194 |
void OPPROTO op_frndint(void) |
2195 |
{ |
2196 |
helper_frndint(); |
2197 |
} |
2198 |
|
2199 |
void OPPROTO op_fscale(void) |
2200 |
{ |
2201 |
helper_fscale(); |
2202 |
} |
2203 |
|
2204 |
void OPPROTO op_fsin(void) |
2205 |
{ |
2206 |
helper_fsin(); |
2207 |
} |
2208 |
|
2209 |
void OPPROTO op_fcos(void) |
2210 |
{ |
2211 |
helper_fcos(); |
2212 |
} |
2213 |
|
2214 |
void OPPROTO op_fnstsw_A0(void) |
2215 |
{ |
2216 |
int fpus;
|
2217 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
2218 |
stw((void *)A0, fpus);
|
2219 |
} |
2220 |
|
2221 |
void OPPROTO op_fnstsw_EAX(void) |
2222 |
{ |
2223 |
int fpus;
|
2224 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
2225 |
EAX = (EAX & 0xffff0000) | fpus;
|
2226 |
} |
2227 |
|
2228 |
void OPPROTO op_fnstcw_A0(void) |
2229 |
{ |
2230 |
stw((void *)A0, env->fpuc);
|
2231 |
} |
2232 |
|
2233 |
void OPPROTO op_fldcw_A0(void) |
2234 |
{ |
2235 |
int rnd_type;
|
2236 |
env->fpuc = lduw((void *)A0);
|
2237 |
/* set rounding mode */
|
2238 |
switch(env->fpuc & RC_MASK) {
|
2239 |
default:
|
2240 |
case RC_NEAR:
|
2241 |
rnd_type = FE_TONEAREST; |
2242 |
break;
|
2243 |
case RC_DOWN:
|
2244 |
rnd_type = FE_DOWNWARD; |
2245 |
break;
|
2246 |
case RC_UP:
|
2247 |
rnd_type = FE_UPWARD; |
2248 |
break;
|
2249 |
case RC_CHOP:
|
2250 |
rnd_type = FE_TOWARDZERO; |
2251 |
break;
|
2252 |
} |
2253 |
fesetround(rnd_type); |
2254 |
} |
2255 |
|
2256 |
void OPPROTO op_fclex(void) |
2257 |
{ |
2258 |
env->fpus &= 0x7f00;
|
2259 |
} |
2260 |
|
2261 |
void OPPROTO op_fninit(void) |
2262 |
{ |
2263 |
env->fpus = 0;
|
2264 |
env->fpstt = 0;
|
2265 |
env->fpuc = 0x37f;
|
2266 |
env->fptags[0] = 1; |
2267 |
env->fptags[1] = 1; |
2268 |
env->fptags[2] = 1; |
2269 |
env->fptags[3] = 1; |
2270 |
env->fptags[4] = 1; |
2271 |
env->fptags[5] = 1; |
2272 |
env->fptags[6] = 1; |
2273 |
env->fptags[7] = 1; |
2274 |
} |