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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 library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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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|
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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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/* 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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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} |
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|
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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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} |
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|
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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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} |
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|
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void OPPROTO op_imull_T0_T1(void) |
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{
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int64_t res; |
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res = (int64_t)((int32_t)T0) * (int64_t)((int32_t)T1); |
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T0 = res; |
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CC_SRC = (res != (int32_t)res); |
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} |
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|
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/* division, flags are undefined */
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/* XXX: add exceptions for overflow */
|
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void OPPROTO op_divb_AL_T0(void) |
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{
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unsigned int num, den, q, r; |
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|
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num = (EAX & 0xffff);
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den = (T0 & 0xff);
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if (den == 0) { |
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EIP = PARAM1; |
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raise_exception(EXCP00_DIVZ); |
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} |
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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; |
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} |
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|
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void OPPROTO op_idivb_AL_T0(void) |
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{
|
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int num, den, q, r;
|
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|
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num = (int16_t)EAX; |
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den = (int8_t)T0; |
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if (den == 0) { |
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EIP = PARAM1; |
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raise_exception(EXCP00_DIVZ); |
| 385 |
} |
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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; |
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} |
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|
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void OPPROTO op_divw_AX_T0(void) |
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{
|
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unsigned int num, den, q, r; |
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|
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num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
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den = (T0 & 0xffff);
|
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if (den == 0) { |
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EIP = PARAM1; |
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raise_exception(EXCP00_DIVZ); |
| 400 |
} |
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q = (num / den) & 0xffff;
|
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r = (num % den) & 0xffff;
|
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EAX = (EAX & 0xffff0000) | q;
|
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EDX = (EDX & 0xffff0000) | r;
|
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} |
| 406 |
|
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void OPPROTO op_idivw_AX_T0(void) |
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{
|
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int num, den, q, r;
|
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|
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num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
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den = (int16_t)T0; |
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if (den == 0) { |
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EIP = PARAM1; |
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raise_exception(EXCP00_DIVZ); |
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} |
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q = (num / den) & 0xffff;
|
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r = (num % den) & 0xffff;
|
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EAX = (EAX & 0xffff0000) | q;
|
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EDX = (EDX & 0xffff0000) | r;
|
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} |
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|
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#ifdef BUGGY_GCC_DIV64
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/* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
|
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call it from another function */
|
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uint32_t div64(uint32_t *q_ptr, uint64_t num, uint32_t den) |
| 427 |
{
|
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*q_ptr = num / den; |
| 429 |
return num % den;
|
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} |
| 431 |
|
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int32_t idiv64(int32_t *q_ptr, int64_t num, int32_t den) |
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{
|
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*q_ptr = num / den; |
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return num % den;
|
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} |
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#endif
|
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|
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void OPPROTO op_divl_EAX_T0(void) |
| 440 |
{
|
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unsigned int den, q, r; |
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uint64_t num; |
| 443 |
|
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num = EAX | ((uint64_t)EDX << 32);
|
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den = T0; |
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if (den == 0) { |
| 447 |
EIP = PARAM1; |
| 448 |
raise_exception(EXCP00_DIVZ); |
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} |
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#ifdef BUGGY_GCC_DIV64
|
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r = div64(&q, num, den); |
| 452 |
#else
|
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q = (num / den); |
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r = (num % den); |
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#endif
|
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EAX = q; |
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EDX = r; |
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} |
| 459 |
|
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void OPPROTO op_idivl_EAX_T0(void) |
| 461 |
{
|
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int den, q, r;
|
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int64_t num; |
| 464 |
|
| 465 |
num = EAX | ((uint64_t)EDX << 32);
|
| 466 |
den = T0; |
| 467 |
if (den == 0) { |
| 468 |
EIP = PARAM1; |
| 469 |
raise_exception(EXCP00_DIVZ); |
| 470 |
} |
| 471 |
#ifdef BUGGY_GCC_DIV64
|
| 472 |
r = idiv64(&q, num, den); |
| 473 |
#else
|
| 474 |
q = (num / den); |
| 475 |
r = (num % den); |
| 476 |
#endif
|
| 477 |
EAX = q; |
| 478 |
EDX = r; |
| 479 |
} |
| 480 |
|
| 481 |
/* constant load & misc op */
|
| 482 |
|
| 483 |
void OPPROTO op_movl_T0_im(void) |
| 484 |
{
|
| 485 |
T0 = PARAM1; |
| 486 |
} |
| 487 |
|
| 488 |
void OPPROTO op_addl_T0_im(void) |
| 489 |
{
|
| 490 |
T0 += PARAM1; |
| 491 |
} |
| 492 |
|
| 493 |
void OPPROTO op_andl_T0_ffff(void) |
| 494 |
{
|
| 495 |
T0 = T0 & 0xffff;
|
| 496 |
} |
| 497 |
|
| 498 |
void OPPROTO op_movl_T0_T1(void) |
| 499 |
{
|
| 500 |
T0 = T1; |
| 501 |
} |
| 502 |
|
| 503 |
void OPPROTO op_movl_T1_im(void) |
| 504 |
{
|
| 505 |
T1 = PARAM1; |
| 506 |
} |
| 507 |
|
| 508 |
void OPPROTO op_addl_T1_im(void) |
| 509 |
{
|
| 510 |
T1 += PARAM1; |
| 511 |
} |
| 512 |
|
| 513 |
void OPPROTO op_movl_T1_A0(void) |
| 514 |
{
|
| 515 |
T1 = A0; |
| 516 |
} |
| 517 |
|
| 518 |
void OPPROTO op_movl_A0_im(void) |
| 519 |
{
|
| 520 |
A0 = PARAM1; |
| 521 |
} |
| 522 |
|
| 523 |
void OPPROTO op_addl_A0_im(void) |
| 524 |
{
|
| 525 |
A0 += PARAM1; |
| 526 |
} |
| 527 |
|
| 528 |
void OPPROTO op_addl_A0_AL(void) |
| 529 |
{
|
| 530 |
A0 += (EAX & 0xff);
|
| 531 |
} |
| 532 |
|
| 533 |
void OPPROTO op_andl_A0_ffff(void) |
| 534 |
{
|
| 535 |
A0 = A0 & 0xffff;
|
| 536 |
} |
| 537 |
|
| 538 |
/* memory access */
|
| 539 |
|
| 540 |
void OPPROTO op_ldub_T0_A0(void) |
| 541 |
{
|
| 542 |
T0 = ldub((uint8_t *)A0); |
| 543 |
} |
| 544 |
|
| 545 |
void OPPROTO op_ldsb_T0_A0(void) |
| 546 |
{
|
| 547 |
T0 = ldsb((int8_t *)A0); |
| 548 |
} |
| 549 |
|
| 550 |
void OPPROTO op_lduw_T0_A0(void) |
| 551 |
{
|
| 552 |
T0 = lduw((uint8_t *)A0); |
| 553 |
} |
| 554 |
|
| 555 |
void OPPROTO op_ldsw_T0_A0(void) |
| 556 |
{
|
| 557 |
T0 = ldsw((int8_t *)A0); |
| 558 |
} |
| 559 |
|
| 560 |
void OPPROTO op_ldl_T0_A0(void) |
| 561 |
{
|
| 562 |
T0 = ldl((uint8_t *)A0); |
| 563 |
} |
| 564 |
|
| 565 |
void OPPROTO op_ldub_T1_A0(void) |
| 566 |
{
|
| 567 |
T1 = ldub((uint8_t *)A0); |
| 568 |
} |
| 569 |
|
| 570 |
void OPPROTO op_ldsb_T1_A0(void) |
| 571 |
{
|
| 572 |
T1 = ldsb((int8_t *)A0); |
| 573 |
} |
| 574 |
|
| 575 |
void OPPROTO op_lduw_T1_A0(void) |
| 576 |
{
|
| 577 |
T1 = lduw((uint8_t *)A0); |
| 578 |
} |
| 579 |
|
| 580 |
void OPPROTO op_ldsw_T1_A0(void) |
| 581 |
{
|
| 582 |
T1 = ldsw((int8_t *)A0); |
| 583 |
} |
| 584 |
|
| 585 |
void OPPROTO op_ldl_T1_A0(void) |
| 586 |
{
|
| 587 |
T1 = ldl((uint8_t *)A0); |
| 588 |
} |
| 589 |
|
| 590 |
void OPPROTO op_stb_T0_A0(void) |
| 591 |
{
|
| 592 |
stb((uint8_t *)A0, T0); |
| 593 |
} |
| 594 |
|
| 595 |
void OPPROTO op_stw_T0_A0(void) |
| 596 |
{
|
| 597 |
stw((uint8_t *)A0, T0); |
| 598 |
} |
| 599 |
|
| 600 |
void OPPROTO op_stl_T0_A0(void) |
| 601 |
{
|
| 602 |
stl((uint8_t *)A0, T0); |
| 603 |
} |
| 604 |
|
| 605 |
/* used for bit operations */
|
| 606 |
|
| 607 |
void OPPROTO op_add_bitw_A0_T1(void) |
| 608 |
{
|
| 609 |
A0 += ((int32_t)T1 >> 4) << 1; |
| 610 |
} |
| 611 |
|
| 612 |
void OPPROTO op_add_bitl_A0_T1(void) |
| 613 |
{
|
| 614 |
A0 += ((int32_t)T1 >> 5) << 2; |
| 615 |
} |
| 616 |
|
| 617 |
/* indirect jump */
|
| 618 |
|
| 619 |
void OPPROTO op_jmp_T0(void) |
| 620 |
{
|
| 621 |
EIP = T0; |
| 622 |
} |
| 623 |
|
| 624 |
void OPPROTO op_jmp_im(void) |
| 625 |
{
|
| 626 |
EIP = PARAM1; |
| 627 |
} |
| 628 |
|
| 629 |
#if 0
|
| 630 |
/* full interrupt support (only useful for real CPU emulation, not
|
| 631 |
finished) - I won't do it any time soon, finish it if you want ! */
|
| 632 |
void raise_interrupt(int intno, int is_int, int error_code,
|
| 633 |
unsigned int next_eip)
|
| 634 |
{
|
| 635 |
SegmentDescriptorTable *dt;
|
| 636 |
uint8_t *ptr;
|
| 637 |
int type, dpl, cpl;
|
| 638 |
uint32_t e1, e2;
|
| 639 |
|
| 640 |
dt = &env->idt;
|
| 641 |
if (intno * 8 + 7 > dt->limit)
|
| 642 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
| 643 |
ptr = dt->base + intno * 8;
|
| 644 |
e1 = ldl(ptr);
|
| 645 |
e2 = ldl(ptr + 4);
|
| 646 |
/* check gate type */
|
| 647 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
| 648 |
switch(type) {
|
| 649 |
case 5: /* task gate */
|
| 650 |
case 6: /* 286 interrupt gate */
|
| 651 |
case 7: /* 286 trap gate */
|
| 652 |
case 14: /* 386 interrupt gate */
|
| 653 |
case 15: /* 386 trap gate */
|
| 654 |
break;
|
| 655 |
default:
|
| 656 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
| 657 |
break;
|
| 658 |
}
|
| 659 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 660 |
cpl = env->segs[R_CS] & 3;
|
| 661 |
/* check privledge if software int */
|
| 662 |
if (is_int && dpl < cpl)
|
| 663 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
|
| 664 |
/* check valid bit */
|
| 665 |
if (!(e2 & DESC_P_MASK))
|
| 666 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
|
| 667 |
}
|
| 668 |
|
| 669 |
#else
|
| 670 |
|
| 671 |
/*
|
| 672 |
* is_int is TRUE if coming from the int instruction. next_eip is the
|
| 673 |
* EIP value AFTER the interrupt instruction. It is only relevant if
|
| 674 |
* is_int is TRUE.
|
| 675 |
*/
|
| 676 |
void raise_interrupt(int intno, int is_int, int error_code, |
| 677 |
unsigned int next_eip) |
| 678 |
{
|
| 679 |
SegmentDescriptorTable *dt; |
| 680 |
uint8_t *ptr; |
| 681 |
int dpl, cpl;
|
| 682 |
uint32_t e2; |
| 683 |
|
| 684 |
dt = &env->idt; |
| 685 |
ptr = dt->base + (intno * 8);
|
| 686 |
e2 = ldl(ptr + 4);
|
| 687 |
|
| 688 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
| 689 |
cpl = 3;
|
| 690 |
/* check privledge if software int */
|
| 691 |
if (is_int && dpl < cpl)
|
| 692 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 693 |
|
| 694 |
/* Since we emulate only user space, we cannot do more than
|
| 695 |
exiting the emulation with the suitable exception and error
|
| 696 |
code */
|
| 697 |
if (is_int)
|
| 698 |
EIP = next_eip; |
| 699 |
env->exception_index = intno; |
| 700 |
env->error_code = error_code; |
| 701 |
|
| 702 |
cpu_loop_exit(); |
| 703 |
} |
| 704 |
|
| 705 |
#endif
|
| 706 |
|
| 707 |
/* shortcuts to generate exceptions */
|
| 708 |
void raise_exception_err(int exception_index, int error_code) |
| 709 |
{
|
| 710 |
raise_interrupt(exception_index, 0, error_code, 0); |
| 711 |
} |
| 712 |
|
| 713 |
void raise_exception(int exception_index) |
| 714 |
{
|
| 715 |
raise_interrupt(exception_index, 0, 0, 0); |
| 716 |
} |
| 717 |
|
| 718 |
void OPPROTO op_raise_interrupt(void) |
| 719 |
{
|
| 720 |
int intno;
|
| 721 |
unsigned int next_eip; |
| 722 |
intno = PARAM1; |
| 723 |
next_eip = PARAM2; |
| 724 |
raise_interrupt(intno, 1, 0, next_eip); |
| 725 |
} |
| 726 |
|
| 727 |
void OPPROTO op_raise_exception(void) |
| 728 |
{
|
| 729 |
int exception_index;
|
| 730 |
exception_index = PARAM1; |
| 731 |
raise_exception(exception_index); |
| 732 |
} |
| 733 |
|
| 734 |
void OPPROTO op_into(void) |
| 735 |
{
|
| 736 |
int eflags;
|
| 737 |
eflags = cc_table[CC_OP].compute_all(); |
| 738 |
if (eflags & CC_O) {
|
| 739 |
raise_interrupt(EXCP04_INTO, 1, 0, PARAM1); |
| 740 |
} |
| 741 |
FORCE_RET(); |
| 742 |
} |
| 743 |
|
| 744 |
void OPPROTO op_cli(void) |
| 745 |
{
|
| 746 |
env->eflags &= ~IF_MASK; |
| 747 |
} |
| 748 |
|
| 749 |
void OPPROTO op_sti(void) |
| 750 |
{
|
| 751 |
env->eflags |= IF_MASK; |
| 752 |
} |
| 753 |
|
| 754 |
#if 0
|
| 755 |
/* vm86plus instructions */
|
| 756 |
void OPPROTO op_cli_vm(void)
|
| 757 |
{
|
| 758 |
env->eflags &= ~VIF_MASK;
|
| 759 |
}
|
| 760 |
|
| 761 |
void OPPROTO op_sti_vm(void)
|
| 762 |
{
|
| 763 |
env->eflags |= VIF_MASK;
|
| 764 |
if (env->eflags & VIP_MASK) {
|
| 765 |
EIP = PARAM1;
|
| 766 |
raise_exception(EXCP0D_GPF);
|
| 767 |
}
|
| 768 |
FORCE_RET();
|
| 769 |
}
|
| 770 |
#endif
|
| 771 |
|
| 772 |
void OPPROTO op_boundw(void) |
| 773 |
{
|
| 774 |
int low, high, v;
|
| 775 |
low = ldsw((uint8_t *)A0); |
| 776 |
high = ldsw((uint8_t *)A0 + 2);
|
| 777 |
v = (int16_t)T0; |
| 778 |
if (v < low || v > high) {
|
| 779 |
EIP = PARAM1; |
| 780 |
raise_exception(EXCP05_BOUND); |
| 781 |
} |
| 782 |
FORCE_RET(); |
| 783 |
} |
| 784 |
|
| 785 |
void OPPROTO op_boundl(void) |
| 786 |
{
|
| 787 |
int low, high, v;
|
| 788 |
low = ldl((uint8_t *)A0); |
| 789 |
high = ldl((uint8_t *)A0 + 4);
|
| 790 |
v = T0; |
| 791 |
if (v < low || v > high) {
|
| 792 |
EIP = PARAM1; |
| 793 |
raise_exception(EXCP05_BOUND); |
| 794 |
} |
| 795 |
FORCE_RET(); |
| 796 |
} |
| 797 |
|
| 798 |
void OPPROTO op_cmpxchg8b(void) |
| 799 |
{
|
| 800 |
uint64_t d; |
| 801 |
int eflags;
|
| 802 |
|
| 803 |
eflags = cc_table[CC_OP].compute_all(); |
| 804 |
d = ldq((uint8_t *)A0); |
| 805 |
if (d == (((uint64_t)EDX << 32) | EAX)) { |
| 806 |
stq((uint8_t *)A0, ((uint64_t)ECX << 32) | EBX);
|
| 807 |
eflags |= CC_Z; |
| 808 |
} else {
|
| 809 |
EDX = d >> 32;
|
| 810 |
EAX = d; |
| 811 |
eflags &= ~CC_Z; |
| 812 |
} |
| 813 |
CC_SRC = eflags; |
| 814 |
FORCE_RET(); |
| 815 |
} |
| 816 |
|
| 817 |
#if defined(__powerpc__)
|
| 818 |
|
| 819 |
/* on PowerPC we patch the jump instruction directly */
|
| 820 |
#define JUMP_TB(tbparam, n, eip)\
|
| 821 |
do {\
|
| 822 |
static void __attribute__((unused)) *__op_label ## n = &&label ## n;\ |
| 823 |
asm volatile ("b %0" : : "i" (&__op_jmp ## n));\ |
| 824 |
label ## n:\ |
| 825 |
T0 = (long)(tbparam) + (n);\
|
| 826 |
EIP = eip;\ |
| 827 |
} while (0) |
| 828 |
|
| 829 |
#else
|
| 830 |
|
| 831 |
/* jump to next block operations (more portable code, does not need
|
| 832 |
cache flushing, but slower because of indirect jump) */
|
| 833 |
#define JUMP_TB(tbparam, n, eip)\
|
| 834 |
do {\
|
| 835 |
static void __attribute__((unused)) *__op_label ## n = &&label ## n;\ |
| 836 |
goto *((TranslationBlock *)tbparam)->tb_next[n];\
|
| 837 |
label ## n:\ |
| 838 |
T0 = (long)(tbparam) + (n);\
|
| 839 |
EIP = eip;\ |
| 840 |
} while (0) |
| 841 |
|
| 842 |
#endif
|
| 843 |
|
| 844 |
void OPPROTO op_jmp_tb_next(void) |
| 845 |
{
|
| 846 |
JUMP_TB(PARAM1, 0, PARAM2);
|
| 847 |
} |
| 848 |
|
| 849 |
void OPPROTO op_movl_T0_0(void) |
| 850 |
{
|
| 851 |
T0 = 0;
|
| 852 |
} |
| 853 |
|
| 854 |
/* multiple size ops */
|
| 855 |
|
| 856 |
#define ldul ldl
|
| 857 |
|
| 858 |
#define SHIFT 0 |
| 859 |
#include "ops_template.h" |
| 860 |
#undef SHIFT
|
| 861 |
|
| 862 |
#define SHIFT 1 |
| 863 |
#include "ops_template.h" |
| 864 |
#undef SHIFT
|
| 865 |
|
| 866 |
#define SHIFT 2 |
| 867 |
#include "ops_template.h" |
| 868 |
#undef SHIFT
|
| 869 |
|
| 870 |
/* sign extend */
|
| 871 |
|
| 872 |
void OPPROTO op_movsbl_T0_T0(void) |
| 873 |
{
|
| 874 |
T0 = (int8_t)T0; |
| 875 |
} |
| 876 |
|
| 877 |
void OPPROTO op_movzbl_T0_T0(void) |
| 878 |
{
|
| 879 |
T0 = (uint8_t)T0; |
| 880 |
} |
| 881 |
|
| 882 |
void OPPROTO op_movswl_T0_T0(void) |
| 883 |
{
|
| 884 |
T0 = (int16_t)T0; |
| 885 |
} |
| 886 |
|
| 887 |
void OPPROTO op_movzwl_T0_T0(void) |
| 888 |
{
|
| 889 |
T0 = (uint16_t)T0; |
| 890 |
} |
| 891 |
|
| 892 |
void OPPROTO op_movswl_EAX_AX(void) |
| 893 |
{
|
| 894 |
EAX = (int16_t)EAX; |
| 895 |
} |
| 896 |
|
| 897 |
void OPPROTO op_movsbw_AX_AL(void) |
| 898 |
{
|
| 899 |
EAX = (EAX & 0xffff0000) | ((int8_t)EAX & 0xffff); |
| 900 |
} |
| 901 |
|
| 902 |
void OPPROTO op_movslq_EDX_EAX(void) |
| 903 |
{
|
| 904 |
EDX = (int32_t)EAX >> 31;
|
| 905 |
} |
| 906 |
|
| 907 |
void OPPROTO op_movswl_DX_AX(void) |
| 908 |
{
|
| 909 |
EDX = (EDX & 0xffff0000) | (((int16_t)EAX >> 15) & 0xffff); |
| 910 |
} |
| 911 |
|
| 912 |
/* push/pop */
|
| 913 |
|
| 914 |
void op_pushl_T0(void) |
| 915 |
{
|
| 916 |
uint32_t offset; |
| 917 |
offset = ESP - 4;
|
| 918 |
stl((void *)offset, T0);
|
| 919 |
/* modify ESP after to handle exceptions correctly */
|
| 920 |
ESP = offset; |
| 921 |
} |
| 922 |
|
| 923 |
void op_pushw_T0(void) |
| 924 |
{
|
| 925 |
uint32_t offset; |
| 926 |
offset = ESP - 2;
|
| 927 |
stw((void *)offset, T0);
|
| 928 |
/* modify ESP after to handle exceptions correctly */
|
| 929 |
ESP = offset; |
| 930 |
} |
| 931 |
|
| 932 |
void op_pushl_ss32_T0(void) |
| 933 |
{
|
| 934 |
uint32_t offset; |
| 935 |
offset = ESP - 4;
|
| 936 |
stl(env->seg_cache[R_SS].base + offset, T0); |
| 937 |
/* modify ESP after to handle exceptions correctly */
|
| 938 |
ESP = offset; |
| 939 |
} |
| 940 |
|
| 941 |
void op_pushw_ss32_T0(void) |
| 942 |
{
|
| 943 |
uint32_t offset; |
| 944 |
offset = ESP - 2;
|
| 945 |
stw(env->seg_cache[R_SS].base + offset, T0); |
| 946 |
/* modify ESP after to handle exceptions correctly */
|
| 947 |
ESP = offset; |
| 948 |
} |
| 949 |
|
| 950 |
void op_pushl_ss16_T0(void) |
| 951 |
{
|
| 952 |
uint32_t offset; |
| 953 |
offset = (ESP - 4) & 0xffff; |
| 954 |
stl(env->seg_cache[R_SS].base + offset, T0); |
| 955 |
/* modify ESP after to handle exceptions correctly */
|
| 956 |
ESP = (ESP & ~0xffff) | offset;
|
| 957 |
} |
| 958 |
|
| 959 |
void op_pushw_ss16_T0(void) |
| 960 |
{
|
| 961 |
uint32_t offset; |
| 962 |
offset = (ESP - 2) & 0xffff; |
| 963 |
stw(env->seg_cache[R_SS].base + offset, T0); |
| 964 |
/* modify ESP after to handle exceptions correctly */
|
| 965 |
ESP = (ESP & ~0xffff) | offset;
|
| 966 |
} |
| 967 |
|
| 968 |
/* NOTE: ESP update is done after */
|
| 969 |
void op_popl_T0(void) |
| 970 |
{
|
| 971 |
T0 = ldl((void *)ESP);
|
| 972 |
} |
| 973 |
|
| 974 |
void op_popw_T0(void) |
| 975 |
{
|
| 976 |
T0 = lduw((void *)ESP);
|
| 977 |
} |
| 978 |
|
| 979 |
void op_popl_ss32_T0(void) |
| 980 |
{
|
| 981 |
T0 = ldl(env->seg_cache[R_SS].base + ESP); |
| 982 |
} |
| 983 |
|
| 984 |
void op_popw_ss32_T0(void) |
| 985 |
{
|
| 986 |
T0 = lduw(env->seg_cache[R_SS].base + ESP); |
| 987 |
} |
| 988 |
|
| 989 |
void op_popl_ss16_T0(void) |
| 990 |
{
|
| 991 |
T0 = ldl(env->seg_cache[R_SS].base + (ESP & 0xffff));
|
| 992 |
} |
| 993 |
|
| 994 |
void op_popw_ss16_T0(void) |
| 995 |
{
|
| 996 |
T0 = lduw(env->seg_cache[R_SS].base + (ESP & 0xffff));
|
| 997 |
} |
| 998 |
|
| 999 |
void op_addl_ESP_4(void) |
| 1000 |
{
|
| 1001 |
ESP += 4;
|
| 1002 |
} |
| 1003 |
|
| 1004 |
void op_addl_ESP_2(void) |
| 1005 |
{
|
| 1006 |
ESP += 2;
|
| 1007 |
} |
| 1008 |
|
| 1009 |
void op_addw_ESP_4(void) |
| 1010 |
{
|
| 1011 |
ESP = (ESP & ~0xffff) | ((ESP + 4) & 0xffff); |
| 1012 |
} |
| 1013 |
|
| 1014 |
void op_addw_ESP_2(void) |
| 1015 |
{
|
| 1016 |
ESP = (ESP & ~0xffff) | ((ESP + 2) & 0xffff); |
| 1017 |
} |
| 1018 |
|
| 1019 |
void op_addl_ESP_im(void) |
| 1020 |
{
|
| 1021 |
ESP += PARAM1; |
| 1022 |
} |
| 1023 |
|
| 1024 |
void op_addw_ESP_im(void) |
| 1025 |
{
|
| 1026 |
ESP = (ESP & ~0xffff) | ((ESP + PARAM1) & 0xffff); |
| 1027 |
} |
| 1028 |
|
| 1029 |
/* rdtsc */
|
| 1030 |
#ifndef __i386__
|
| 1031 |
uint64_t emu_time; |
| 1032 |
#endif
|
| 1033 |
|
| 1034 |
void OPPROTO op_rdtsc(void) |
| 1035 |
{
|
| 1036 |
uint64_t val; |
| 1037 |
#ifdef __i386__
|
| 1038 |
asm("rdtsc" : "=A" (val)); |
| 1039 |
#else
|
| 1040 |
/* better than nothing: the time increases */
|
| 1041 |
val = emu_time++; |
| 1042 |
#endif
|
| 1043 |
EAX = val; |
| 1044 |
EDX = val >> 32;
|
| 1045 |
} |
| 1046 |
|
| 1047 |
/* We simulate a pre-MMX pentium as in valgrind */
|
| 1048 |
#define CPUID_FP87 (1 << 0) |
| 1049 |
#define CPUID_VME (1 << 1) |
| 1050 |
#define CPUID_DE (1 << 2) |
| 1051 |
#define CPUID_PSE (1 << 3) |
| 1052 |
#define CPUID_TSC (1 << 4) |
| 1053 |
#define CPUID_MSR (1 << 5) |
| 1054 |
#define CPUID_PAE (1 << 6) |
| 1055 |
#define CPUID_MCE (1 << 7) |
| 1056 |
#define CPUID_CX8 (1 << 8) |
| 1057 |
#define CPUID_APIC (1 << 9) |
| 1058 |
#define CPUID_SEP (1 << 11) /* sysenter/sysexit */ |
| 1059 |
#define CPUID_MTRR (1 << 12) |
| 1060 |
#define CPUID_PGE (1 << 13) |
| 1061 |
#define CPUID_MCA (1 << 14) |
| 1062 |
#define CPUID_CMOV (1 << 15) |
| 1063 |
/* ... */
|
| 1064 |
#define CPUID_MMX (1 << 23) |
| 1065 |
#define CPUID_FXSR (1 << 24) |
| 1066 |
#define CPUID_SSE (1 << 25) |
| 1067 |
#define CPUID_SSE2 (1 << 26) |
| 1068 |
|
| 1069 |
void helper_cpuid(void) |
| 1070 |
{
|
| 1071 |
if (EAX == 0) { |
| 1072 |
EAX = 1; /* max EAX index supported */ |
| 1073 |
EBX = 0x756e6547;
|
| 1074 |
ECX = 0x6c65746e;
|
| 1075 |
EDX = 0x49656e69;
|
| 1076 |
} else {
|
| 1077 |
/* EAX = 1 info */
|
| 1078 |
EAX = 0x52b;
|
| 1079 |
EBX = 0;
|
| 1080 |
ECX = 0;
|
| 1081 |
EDX = CPUID_FP87 | CPUID_DE | CPUID_PSE | |
| 1082 |
CPUID_TSC | CPUID_MSR | CPUID_MCE | |
| 1083 |
CPUID_CX8; |
| 1084 |
} |
| 1085 |
} |
| 1086 |
|
| 1087 |
void OPPROTO op_cpuid(void) |
| 1088 |
{
|
| 1089 |
helper_cpuid(); |
| 1090 |
} |
| 1091 |
|
| 1092 |
/* bcd */
|
| 1093 |
|
| 1094 |
/* XXX: exception */
|
| 1095 |
void OPPROTO op_aam(void) |
| 1096 |
{
|
| 1097 |
int base = PARAM1;
|
| 1098 |
int al, ah;
|
| 1099 |
al = EAX & 0xff;
|
| 1100 |
ah = al / base; |
| 1101 |
al = al % base; |
| 1102 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
| 1103 |
CC_DST = al; |
| 1104 |
} |
| 1105 |
|
| 1106 |
void OPPROTO op_aad(void) |
| 1107 |
{
|
| 1108 |
int base = PARAM1;
|
| 1109 |
int al, ah;
|
| 1110 |
al = EAX & 0xff;
|
| 1111 |
ah = (EAX >> 8) & 0xff; |
| 1112 |
al = ((ah * base) + al) & 0xff;
|
| 1113 |
EAX = (EAX & ~0xffff) | al;
|
| 1114 |
CC_DST = al; |
| 1115 |
} |
| 1116 |
|
| 1117 |
void OPPROTO op_aaa(void) |
| 1118 |
{
|
| 1119 |
int icarry;
|
| 1120 |
int al, ah, af;
|
| 1121 |
int eflags;
|
| 1122 |
|
| 1123 |
eflags = cc_table[CC_OP].compute_all(); |
| 1124 |
af = eflags & CC_A; |
| 1125 |
al = EAX & 0xff;
|
| 1126 |
ah = (EAX >> 8) & 0xff; |
| 1127 |
|
| 1128 |
icarry = (al > 0xf9);
|
| 1129 |
if (((al & 0x0f) > 9 ) || af) { |
| 1130 |
al = (al + 6) & 0x0f; |
| 1131 |
ah = (ah + 1 + icarry) & 0xff; |
| 1132 |
eflags |= CC_C | CC_A; |
| 1133 |
} else {
|
| 1134 |
eflags &= ~(CC_C | CC_A); |
| 1135 |
al &= 0x0f;
|
| 1136 |
} |
| 1137 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
| 1138 |
CC_SRC = eflags; |
| 1139 |
} |
| 1140 |
|
| 1141 |
void OPPROTO op_aas(void) |
| 1142 |
{
|
| 1143 |
int icarry;
|
| 1144 |
int al, ah, af;
|
| 1145 |
int eflags;
|
| 1146 |
|
| 1147 |
eflags = cc_table[CC_OP].compute_all(); |
| 1148 |
af = eflags & CC_A; |
| 1149 |
al = EAX & 0xff;
|
| 1150 |
ah = (EAX >> 8) & 0xff; |
| 1151 |
|
| 1152 |
icarry = (al < 6);
|
| 1153 |
if (((al & 0x0f) > 9 ) || af) { |
| 1154 |
al = (al - 6) & 0x0f; |
| 1155 |
ah = (ah - 1 - icarry) & 0xff; |
| 1156 |
eflags |= CC_C | CC_A; |
| 1157 |
} else {
|
| 1158 |
eflags &= ~(CC_C | CC_A); |
| 1159 |
al &= 0x0f;
|
| 1160 |
} |
| 1161 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
| 1162 |
CC_SRC = eflags; |
| 1163 |
} |
| 1164 |
|
| 1165 |
void OPPROTO op_daa(void) |
| 1166 |
{
|
| 1167 |
int al, af, cf;
|
| 1168 |
int eflags;
|
| 1169 |
|
| 1170 |
eflags = cc_table[CC_OP].compute_all(); |
| 1171 |
cf = eflags & CC_C; |
| 1172 |
af = eflags & CC_A; |
| 1173 |
al = EAX & 0xff;
|
| 1174 |
|
| 1175 |
eflags = 0;
|
| 1176 |
if (((al & 0x0f) > 9 ) || af) { |
| 1177 |
al = (al + 6) & 0xff; |
| 1178 |
eflags |= CC_A; |
| 1179 |
} |
| 1180 |
if ((al > 0x9f) || cf) { |
| 1181 |
al = (al + 0x60) & 0xff; |
| 1182 |
eflags |= CC_C; |
| 1183 |
} |
| 1184 |
EAX = (EAX & ~0xff) | al;
|
| 1185 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
| 1186 |
eflags |= (al == 0) << 6; /* zf */ |
| 1187 |
eflags |= parity_table[al]; /* pf */
|
| 1188 |
eflags |= (al & 0x80); /* sf */ |
| 1189 |
CC_SRC = eflags; |
| 1190 |
} |
| 1191 |
|
| 1192 |
void OPPROTO op_das(void) |
| 1193 |
{
|
| 1194 |
int al, al1, af, cf;
|
| 1195 |
int eflags;
|
| 1196 |
|
| 1197 |
eflags = cc_table[CC_OP].compute_all(); |
| 1198 |
cf = eflags & CC_C; |
| 1199 |
af = eflags & CC_A; |
| 1200 |
al = EAX & 0xff;
|
| 1201 |
|
| 1202 |
eflags = 0;
|
| 1203 |
al1 = al; |
| 1204 |
if (((al & 0x0f) > 9 ) || af) { |
| 1205 |
eflags |= CC_A; |
| 1206 |
if (al < 6 || cf) |
| 1207 |
eflags |= CC_C; |
| 1208 |
al = (al - 6) & 0xff; |
| 1209 |
} |
| 1210 |
if ((al1 > 0x99) || cf) { |
| 1211 |
al = (al - 0x60) & 0xff; |
| 1212 |
eflags |= CC_C; |
| 1213 |
} |
| 1214 |
EAX = (EAX & ~0xff) | al;
|
| 1215 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
| 1216 |
eflags |= (al == 0) << 6; /* zf */ |
| 1217 |
eflags |= parity_table[al]; /* pf */
|
| 1218 |
eflags |= (al & 0x80); /* sf */ |
| 1219 |
CC_SRC = eflags; |
| 1220 |
} |
| 1221 |
|
| 1222 |
/* segment handling */
|
| 1223 |
|
| 1224 |
/* only works if protected mode and not VM86 */
|
| 1225 |
void load_seg(int seg_reg, int selector, unsigned cur_eip) |
| 1226 |
{
|
| 1227 |
SegmentCache *sc; |
| 1228 |
SegmentDescriptorTable *dt; |
| 1229 |
int index;
|
| 1230 |
uint32_t e1, e2; |
| 1231 |
uint8_t *ptr; |
| 1232 |
|
| 1233 |
sc = &env->seg_cache[seg_reg]; |
| 1234 |
if ((selector & 0xfffc) == 0) { |
| 1235 |
/* null selector case */
|
| 1236 |
if (seg_reg == R_SS) {
|
| 1237 |
EIP = cur_eip; |
| 1238 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 1239 |
} else {
|
| 1240 |
/* XXX: each access should trigger an exception */
|
| 1241 |
sc->base = NULL;
|
| 1242 |
sc->limit = 0;
|
| 1243 |
sc->seg_32bit = 1;
|
| 1244 |
} |
| 1245 |
} else {
|
| 1246 |
if (selector & 0x4) |
| 1247 |
dt = &env->ldt; |
| 1248 |
else
|
| 1249 |
dt = &env->gdt; |
| 1250 |
index = selector & ~7;
|
| 1251 |
if ((index + 7) > dt->limit) { |
| 1252 |
EIP = cur_eip; |
| 1253 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 1254 |
} |
| 1255 |
ptr = dt->base + index; |
| 1256 |
e1 = ldl(ptr); |
| 1257 |
e2 = ldl(ptr + 4);
|
| 1258 |
if (!(e2 & DESC_S_MASK) ||
|
| 1259 |
(e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK) {
|
| 1260 |
EIP = cur_eip; |
| 1261 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 1262 |
} |
| 1263 |
|
| 1264 |
if (seg_reg == R_SS) {
|
| 1265 |
if ((e2 & (DESC_CS_MASK | DESC_W_MASK)) == 0) { |
| 1266 |
EIP = cur_eip; |
| 1267 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 1268 |
} |
| 1269 |
} else {
|
| 1270 |
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK) {
|
| 1271 |
EIP = cur_eip; |
| 1272 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
| 1273 |
} |
| 1274 |
} |
| 1275 |
|
| 1276 |
if (!(e2 & DESC_P_MASK)) {
|
| 1277 |
EIP = cur_eip; |
| 1278 |
if (seg_reg == R_SS)
|
| 1279 |
raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
|
| 1280 |
else
|
| 1281 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
| 1282 |
} |
| 1283 |
|
| 1284 |
sc->base = (void *)((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
| 1285 |
sc->limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
| 1286 |
if (e2 & (1 << 23)) |
| 1287 |
sc->limit = (sc->limit << 12) | 0xfff; |
| 1288 |
sc->seg_32bit = (e2 >> 22) & 1; |
| 1289 |
#if 0
|
| 1290 |
fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx seg_32bit=%d\n",
|
| 1291 |
selector, (unsigned long)sc->base, sc->limit, sc->seg_32bit);
|
| 1292 |
#endif
|
| 1293 |
} |
| 1294 |
env->segs[seg_reg] = selector; |
| 1295 |
} |
| 1296 |
|
| 1297 |
void OPPROTO op_movl_seg_T0(void) |
| 1298 |
{
|
| 1299 |
load_seg(PARAM1, T0 & 0xffff, PARAM2);
|
| 1300 |
} |
| 1301 |
|
| 1302 |
/* faster VM86 version */
|
| 1303 |
void OPPROTO op_movl_seg_T0_vm(void) |
| 1304 |
{
|
| 1305 |
int selector;
|
| 1306 |
|
| 1307 |
selector = T0 & 0xffff;
|
| 1308 |
/* env->segs[] access */
|
| 1309 |
*(uint32_t *)((char *)env + PARAM1) = selector;
|
| 1310 |
/* env->seg_cache[] access */
|
| 1311 |
((SegmentCache *)((char *)env + PARAM2))->base = (void *)(selector << 4); |
| 1312 |
} |
| 1313 |
|
| 1314 |
void OPPROTO op_movl_T0_seg(void) |
| 1315 |
{
|
| 1316 |
T0 = env->segs[PARAM1]; |
| 1317 |
} |
| 1318 |
|
| 1319 |
void OPPROTO op_movl_A0_seg(void) |
| 1320 |
{
|
| 1321 |
A0 = *(unsigned long *)((char *)env + PARAM1); |
| 1322 |
} |
| 1323 |
|
| 1324 |
void OPPROTO op_addl_A0_seg(void) |
| 1325 |
{
|
| 1326 |
A0 += *(unsigned long *)((char *)env + PARAM1); |
| 1327 |
} |
| 1328 |
|
| 1329 |
void helper_lsl(void) |
| 1330 |
{
|
| 1331 |
unsigned int selector, limit; |
| 1332 |
SegmentDescriptorTable *dt; |
| 1333 |
int index;
|
| 1334 |
uint32_t e1, e2; |
| 1335 |
uint8_t *ptr; |
| 1336 |
|
| 1337 |
CC_SRC = cc_table[CC_OP].compute_all() & ~CC_Z; |
| 1338 |
selector = T0 & 0xffff;
|
| 1339 |
if (selector & 0x4) |
| 1340 |
dt = &env->ldt; |
| 1341 |
else
|
| 1342 |
dt = &env->gdt; |
| 1343 |
index = selector & ~7;
|
| 1344 |
if ((index + 7) > dt->limit) |
| 1345 |
return;
|
| 1346 |
ptr = dt->base + index; |
| 1347 |
e1 = ldl(ptr); |
| 1348 |
e2 = ldl(ptr + 4);
|
| 1349 |
limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
| 1350 |
if (e2 & (1 << 23)) |
| 1351 |
limit = (limit << 12) | 0xfff; |
| 1352 |
T1 = limit; |
| 1353 |
CC_SRC |= CC_Z; |
| 1354 |
} |
| 1355 |
|
| 1356 |
void OPPROTO op_lsl(void) |
| 1357 |
{
|
| 1358 |
helper_lsl(); |
| 1359 |
} |
| 1360 |
|
| 1361 |
void helper_lar(void) |
| 1362 |
{
|
| 1363 |
unsigned int selector; |
| 1364 |
SegmentDescriptorTable *dt; |
| 1365 |
int index;
|
| 1366 |
uint32_t e2; |
| 1367 |
uint8_t *ptr; |
| 1368 |
|
| 1369 |
CC_SRC = cc_table[CC_OP].compute_all() & ~CC_Z; |
| 1370 |
selector = T0 & 0xffff;
|
| 1371 |
if (selector & 0x4) |
| 1372 |
dt = &env->ldt; |
| 1373 |
else
|
| 1374 |
dt = &env->gdt; |
| 1375 |
index = selector & ~7;
|
| 1376 |
if ((index + 7) > dt->limit) |
| 1377 |
return;
|
| 1378 |
ptr = dt->base + index; |
| 1379 |
e2 = ldl(ptr + 4);
|
| 1380 |
T1 = e2 & 0x00f0ff00;
|
| 1381 |
CC_SRC |= CC_Z; |
| 1382 |
} |
| 1383 |
|
| 1384 |
void OPPROTO op_lar(void) |
| 1385 |
{
|
| 1386 |
helper_lar(); |
| 1387 |
} |
| 1388 |
|
| 1389 |
/* flags handling */
|
| 1390 |
|
| 1391 |
/* slow jumps cases : in order to avoid calling a function with a
|
| 1392 |
pointer (which can generate a stack frame on PowerPC), we use
|
| 1393 |
op_setcc to set T0 and then call op_jcc. */
|
| 1394 |
void OPPROTO op_jcc(void) |
| 1395 |
{
|
| 1396 |
if (T0)
|
| 1397 |
JUMP_TB(PARAM1, 0, PARAM2);
|
| 1398 |
else
|
| 1399 |
JUMP_TB(PARAM1, 1, PARAM3);
|
| 1400 |
FORCE_RET(); |
| 1401 |
} |
| 1402 |
|
| 1403 |
/* slow set cases (compute x86 flags) */
|
| 1404 |
void OPPROTO op_seto_T0_cc(void) |
| 1405 |
{
|
| 1406 |
int eflags;
|
| 1407 |
eflags = cc_table[CC_OP].compute_all(); |
| 1408 |
T0 = (eflags >> 11) & 1; |
| 1409 |
} |
| 1410 |
|
| 1411 |
void OPPROTO op_setb_T0_cc(void) |
| 1412 |
{
|
| 1413 |
T0 = cc_table[CC_OP].compute_c(); |
| 1414 |
} |
| 1415 |
|
| 1416 |
void OPPROTO op_setz_T0_cc(void) |
| 1417 |
{
|
| 1418 |
int eflags;
|
| 1419 |
eflags = cc_table[CC_OP].compute_all(); |
| 1420 |
T0 = (eflags >> 6) & 1; |
| 1421 |
} |
| 1422 |
|
| 1423 |
void OPPROTO op_setbe_T0_cc(void) |
| 1424 |
{
|
| 1425 |
int eflags;
|
| 1426 |
eflags = cc_table[CC_OP].compute_all(); |
| 1427 |
T0 = (eflags & (CC_Z | CC_C)) != 0;
|
| 1428 |
} |
| 1429 |
|
| 1430 |
void OPPROTO op_sets_T0_cc(void) |
| 1431 |
{
|
| 1432 |
int eflags;
|
| 1433 |
eflags = cc_table[CC_OP].compute_all(); |
| 1434 |
T0 = (eflags >> 7) & 1; |
| 1435 |
} |
| 1436 |
|
| 1437 |
void OPPROTO op_setp_T0_cc(void) |
| 1438 |
{
|
| 1439 |
int eflags;
|
| 1440 |
eflags = cc_table[CC_OP].compute_all(); |
| 1441 |
T0 = (eflags >> 2) & 1; |
| 1442 |
} |
| 1443 |
|
| 1444 |
void OPPROTO op_setl_T0_cc(void) |
| 1445 |
{
|
| 1446 |
int eflags;
|
| 1447 |
eflags = cc_table[CC_OP].compute_all(); |
| 1448 |
T0 = ((eflags ^ (eflags >> 4)) >> 7) & 1; |
| 1449 |
} |
| 1450 |
|
| 1451 |
void OPPROTO op_setle_T0_cc(void) |
| 1452 |
{
|
| 1453 |
int eflags;
|
| 1454 |
eflags = cc_table[CC_OP].compute_all(); |
| 1455 |
T0 = (((eflags ^ (eflags >> 4)) & 0x80) || (eflags & CC_Z)) != 0; |
| 1456 |
} |
| 1457 |
|
| 1458 |
void OPPROTO op_xor_T0_1(void) |
| 1459 |
{
|
| 1460 |
T0 ^= 1;
|
| 1461 |
} |
| 1462 |
|
| 1463 |
void OPPROTO op_set_cc_op(void) |
| 1464 |
{
|
| 1465 |
CC_OP = PARAM1; |
| 1466 |
} |
| 1467 |
|
| 1468 |
#define FL_UPDATE_MASK32 (TF_MASK | AC_MASK | ID_MASK)
|
| 1469 |
#define FL_UPDATE_MASK16 (TF_MASK)
|
| 1470 |
|
| 1471 |
void OPPROTO op_movl_eflags_T0(void) |
| 1472 |
{
|
| 1473 |
int eflags;
|
| 1474 |
eflags = T0; |
| 1475 |
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
| 1476 |
DF = 1 - (2 * ((eflags >> 10) & 1)); |
| 1477 |
/* we also update some system flags as in user mode */
|
| 1478 |
env->eflags = (env->eflags & ~FL_UPDATE_MASK32) | (eflags & FL_UPDATE_MASK32); |
| 1479 |
} |
| 1480 |
|
| 1481 |
void OPPROTO op_movw_eflags_T0(void) |
| 1482 |
{
|
| 1483 |
int eflags;
|
| 1484 |
eflags = T0; |
| 1485 |
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
| 1486 |
DF = 1 - (2 * ((eflags >> 10) & 1)); |
| 1487 |
/* we also update some system flags as in user mode */
|
| 1488 |
env->eflags = (env->eflags & ~FL_UPDATE_MASK16) | (eflags & FL_UPDATE_MASK16); |
| 1489 |
} |
| 1490 |
|
| 1491 |
#if 0
|
| 1492 |
/* vm86plus version */
|
| 1493 |
void OPPROTO op_movw_eflags_T0_vm(void)
|
| 1494 |
{
|
| 1495 |
int eflags;
|
| 1496 |
eflags = T0;
|
| 1497 |
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
|
| 1498 |
DF = 1 - (2 * ((eflags >> 10) & 1));
|
| 1499 |
/* we also update some system flags as in user mode */
|
| 1500 |
env->eflags = (env->eflags & ~(FL_UPDATE_MASK16 | VIF_MASK)) |
|
| 1501 |
(eflags & FL_UPDATE_MASK16);
|
| 1502 |
if (eflags & IF_MASK) {
|
| 1503 |
env->eflags |= VIF_MASK;
|
| 1504 |
if (env->eflags & VIP_MASK) {
|
| 1505 |
EIP = PARAM1;
|
| 1506 |
raise_exception(EXCP0D_GPF);
|
| 1507 |
}
|
| 1508 |
}
|
| 1509 |
FORCE_RET();
|
| 1510 |
}
|
| 1511 |
|
| 1512 |
void OPPROTO op_movl_eflags_T0_vm(void)
|
| 1513 |
{
|
| 1514 |
int eflags;
|
| 1515 |
eflags = T0;
|
| 1516 |
CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
|
| 1517 |
DF = 1 - (2 * ((eflags >> 10) & 1));
|
| 1518 |
/* we also update some system flags as in user mode */
|
| 1519 |
env->eflags = (env->eflags & ~(FL_UPDATE_MASK32 | VIF_MASK)) |
|
| 1520 |
(eflags & FL_UPDATE_MASK32);
|
| 1521 |
if (eflags & IF_MASK) {
|
| 1522 |
env->eflags |= VIF_MASK;
|
| 1523 |
if (env->eflags & VIP_MASK) {
|
| 1524 |
EIP = PARAM1;
|
| 1525 |
raise_exception(EXCP0D_GPF);
|
| 1526 |
}
|
| 1527 |
}
|
| 1528 |
FORCE_RET();
|
| 1529 |
}
|
| 1530 |
#endif
|
| 1531 |
|
| 1532 |
/* XXX: compute only O flag */
|
| 1533 |
void OPPROTO op_movb_eflags_T0(void) |
| 1534 |
{
|
| 1535 |
int of;
|
| 1536 |
of = cc_table[CC_OP].compute_all() & CC_O; |
| 1537 |
CC_SRC = (T0 & (CC_S | CC_Z | CC_A | CC_P | CC_C)) | of; |
| 1538 |
} |
| 1539 |
|
| 1540 |
void OPPROTO op_movl_T0_eflags(void) |
| 1541 |
{
|
| 1542 |
int eflags;
|
| 1543 |
eflags = cc_table[CC_OP].compute_all(); |
| 1544 |
eflags |= (DF & DF_MASK); |
| 1545 |
eflags |= env->eflags & ~(VM_MASK | RF_MASK); |
| 1546 |
T0 = eflags; |
| 1547 |
} |
| 1548 |
|
| 1549 |
/* vm86plus version */
|
| 1550 |
#if 0
|
| 1551 |
void OPPROTO op_movl_T0_eflags_vm(void)
|
| 1552 |
{
|
| 1553 |
int eflags;
|
| 1554 |
eflags = cc_table[CC_OP].compute_all();
|
| 1555 |
eflags |= (DF & DF_MASK);
|
| 1556 |
eflags |= env->eflags & ~(VM_MASK | RF_MASK | IF_MASK);
|
| 1557 |
if (env->eflags & VIF_MASK)
|
| 1558 |
eflags |= IF_MASK;
|
| 1559 |
T0 = eflags;
|
| 1560 |
}
|
| 1561 |
#endif
|
| 1562 |
|
| 1563 |
void OPPROTO op_cld(void) |
| 1564 |
{
|
| 1565 |
DF = 1;
|
| 1566 |
} |
| 1567 |
|
| 1568 |
void OPPROTO op_std(void) |
| 1569 |
{
|
| 1570 |
DF = -1;
|
| 1571 |
} |
| 1572 |
|
| 1573 |
void OPPROTO op_clc(void) |
| 1574 |
{
|
| 1575 |
int eflags;
|
| 1576 |
eflags = cc_table[CC_OP].compute_all(); |
| 1577 |
eflags &= ~CC_C; |
| 1578 |
CC_SRC = eflags; |
| 1579 |
} |
| 1580 |
|
| 1581 |
void OPPROTO op_stc(void) |
| 1582 |
{
|
| 1583 |
int eflags;
|
| 1584 |
eflags = cc_table[CC_OP].compute_all(); |
| 1585 |
eflags |= CC_C; |
| 1586 |
CC_SRC = eflags; |
| 1587 |
} |
| 1588 |
|
| 1589 |
void OPPROTO op_cmc(void) |
| 1590 |
{
|
| 1591 |
int eflags;
|
| 1592 |
eflags = cc_table[CC_OP].compute_all(); |
| 1593 |
eflags ^= CC_C; |
| 1594 |
CC_SRC = eflags; |
| 1595 |
} |
| 1596 |
|
| 1597 |
void OPPROTO op_salc(void) |
| 1598 |
{
|
| 1599 |
int cf;
|
| 1600 |
cf = cc_table[CC_OP].compute_c(); |
| 1601 |
EAX = (EAX & ~0xff) | ((-cf) & 0xff); |
| 1602 |
} |
| 1603 |
|
| 1604 |
static int compute_all_eflags(void) |
| 1605 |
{
|
| 1606 |
return CC_SRC;
|
| 1607 |
} |
| 1608 |
|
| 1609 |
static int compute_c_eflags(void) |
| 1610 |
{
|
| 1611 |
return CC_SRC & CC_C;
|
| 1612 |
} |
| 1613 |
|
| 1614 |
static int compute_c_mul(void) |
| 1615 |
{
|
| 1616 |
int cf;
|
| 1617 |
cf = (CC_SRC != 0);
|
| 1618 |
return cf;
|
| 1619 |
} |
| 1620 |
|
| 1621 |
static int compute_all_mul(void) |
| 1622 |
{
|
| 1623 |
int cf, pf, af, zf, sf, of;
|
| 1624 |
cf = (CC_SRC != 0);
|
| 1625 |
pf = 0; /* undefined */ |
| 1626 |
af = 0; /* undefined */ |
| 1627 |
zf = 0; /* undefined */ |
| 1628 |
sf = 0; /* undefined */ |
| 1629 |
of = cf << 11;
|
| 1630 |
return cf | pf | af | zf | sf | of;
|
| 1631 |
} |
| 1632 |
|
| 1633 |
CCTable cc_table[CC_OP_NB] = {
|
| 1634 |
[CC_OP_DYNAMIC] = { /* should never happen */ },
|
| 1635 |
|
| 1636 |
[CC_OP_EFLAGS] = { compute_all_eflags, compute_c_eflags },
|
| 1637 |
|
| 1638 |
[CC_OP_MUL] = { compute_all_mul, compute_c_mul },
|
| 1639 |
|
| 1640 |
[CC_OP_ADDB] = { compute_all_addb, compute_c_addb },
|
| 1641 |
[CC_OP_ADDW] = { compute_all_addw, compute_c_addw },
|
| 1642 |
[CC_OP_ADDL] = { compute_all_addl, compute_c_addl },
|
| 1643 |
|
| 1644 |
[CC_OP_ADCB] = { compute_all_adcb, compute_c_adcb },
|
| 1645 |
[CC_OP_ADCW] = { compute_all_adcw, compute_c_adcw },
|
| 1646 |
[CC_OP_ADCL] = { compute_all_adcl, compute_c_adcl },
|
| 1647 |
|
| 1648 |
[CC_OP_SUBB] = { compute_all_subb, compute_c_subb },
|
| 1649 |
[CC_OP_SUBW] = { compute_all_subw, compute_c_subw },
|
| 1650 |
[CC_OP_SUBL] = { compute_all_subl, compute_c_subl },
|
| 1651 |
|
| 1652 |
[CC_OP_SBBB] = { compute_all_sbbb, compute_c_sbbb },
|
| 1653 |
[CC_OP_SBBW] = { compute_all_sbbw, compute_c_sbbw },
|
| 1654 |
[CC_OP_SBBL] = { compute_all_sbbl, compute_c_sbbl },
|
| 1655 |
|
| 1656 |
[CC_OP_LOGICB] = { compute_all_logicb, compute_c_logicb },
|
| 1657 |
[CC_OP_LOGICW] = { compute_all_logicw, compute_c_logicw },
|
| 1658 |
[CC_OP_LOGICL] = { compute_all_logicl, compute_c_logicl },
|
| 1659 |
|
| 1660 |
[CC_OP_INCB] = { compute_all_incb, compute_c_incl },
|
| 1661 |
[CC_OP_INCW] = { compute_all_incw, compute_c_incl },
|
| 1662 |
[CC_OP_INCL] = { compute_all_incl, compute_c_incl },
|
| 1663 |
|
| 1664 |
[CC_OP_DECB] = { compute_all_decb, compute_c_incl },
|
| 1665 |
[CC_OP_DECW] = { compute_all_decw, compute_c_incl },
|
| 1666 |
[CC_OP_DECL] = { compute_all_decl, compute_c_incl },
|
| 1667 |
|
| 1668 |
[CC_OP_SHLB] = { compute_all_shlb, compute_c_shlb },
|
| 1669 |
[CC_OP_SHLW] = { compute_all_shlw, compute_c_shlw },
|
| 1670 |
[CC_OP_SHLL] = { compute_all_shll, compute_c_shll },
|
| 1671 |
|
| 1672 |
[CC_OP_SARB] = { compute_all_sarb, compute_c_sarl },
|
| 1673 |
[CC_OP_SARW] = { compute_all_sarw, compute_c_sarl },
|
| 1674 |
[CC_OP_SARL] = { compute_all_sarl, compute_c_sarl },
|
| 1675 |
}; |
| 1676 |
|
| 1677 |
/* floating point support. Some of the code for complicated x87
|
| 1678 |
functions comes from the LGPL'ed x86 emulator found in the Willows
|
| 1679 |
TWIN windows emulator. */
|
| 1680 |
|
| 1681 |
#ifdef USE_X86LDOUBLE
|
| 1682 |
/* use long double functions */
|
| 1683 |
#define lrint lrintl
|
| 1684 |
#define llrint llrintl
|
| 1685 |
#define fabs fabsl
|
| 1686 |
#define sin sinl
|
| 1687 |
#define cos cosl
|
| 1688 |
#define sqrt sqrtl
|
| 1689 |
#define pow powl
|
| 1690 |
#define log logl
|
| 1691 |
#define tan tanl
|
| 1692 |
#define atan2 atan2l
|
| 1693 |
#define floor floorl
|
| 1694 |
#define ceil ceill
|
| 1695 |
#define rint rintl
|
| 1696 |
#endif
|
| 1697 |
|
| 1698 |
extern int lrint(CPU86_LDouble x); |
| 1699 |
extern int64_t llrint(CPU86_LDouble x);
|
| 1700 |
extern CPU86_LDouble fabs(CPU86_LDouble x);
|
| 1701 |
extern CPU86_LDouble sin(CPU86_LDouble x);
|
| 1702 |
extern CPU86_LDouble cos(CPU86_LDouble x);
|
| 1703 |
extern CPU86_LDouble sqrt(CPU86_LDouble x);
|
| 1704 |
extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
|
| 1705 |
extern CPU86_LDouble log(CPU86_LDouble x);
|
| 1706 |
extern CPU86_LDouble tan(CPU86_LDouble x);
|
| 1707 |
extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
|
| 1708 |
extern CPU86_LDouble floor(CPU86_LDouble x);
|
| 1709 |
extern CPU86_LDouble ceil(CPU86_LDouble x);
|
| 1710 |
extern CPU86_LDouble rint(CPU86_LDouble x);
|
| 1711 |
|
| 1712 |
#if defined(__powerpc__)
|
| 1713 |
extern CPU86_LDouble copysign(CPU86_LDouble, CPU86_LDouble);
|
| 1714 |
|
| 1715 |
/* correct (but slow) PowerPC rint() (glibc version is incorrect) */
|
| 1716 |
double qemu_rint(double x) |
| 1717 |
{
|
| 1718 |
double y = 4503599627370496.0; |
| 1719 |
if (fabs(x) >= y)
|
| 1720 |
return x;
|
| 1721 |
if (x < 0) |
| 1722 |
y = -y; |
| 1723 |
y = (x + y) - y; |
| 1724 |
if (y == 0.0) |
| 1725 |
y = copysign(y, x); |
| 1726 |
return y;
|
| 1727 |
} |
| 1728 |
|
| 1729 |
#define rint qemu_rint
|
| 1730 |
#endif
|
| 1731 |
|
| 1732 |
#define RC_MASK 0xc00 |
| 1733 |
#define RC_NEAR 0x000 |
| 1734 |
#define RC_DOWN 0x400 |
| 1735 |
#define RC_UP 0x800 |
| 1736 |
#define RC_CHOP 0xc00 |
| 1737 |
|
| 1738 |
#define MAXTAN 9223372036854775808.0 |
| 1739 |
|
| 1740 |
#ifdef USE_X86LDOUBLE
|
| 1741 |
|
| 1742 |
/* only for x86 */
|
| 1743 |
typedef union { |
| 1744 |
long double d; |
| 1745 |
struct {
|
| 1746 |
unsigned long long lower; |
| 1747 |
unsigned short upper; |
| 1748 |
} l; |
| 1749 |
} CPU86_LDoubleU; |
| 1750 |
|
| 1751 |
/* the following deal with x86 long double-precision numbers */
|
| 1752 |
#define MAXEXPD 0x7fff |
| 1753 |
#define EXPBIAS 16383 |
| 1754 |
#define EXPD(fp) (fp.l.upper & 0x7fff) |
| 1755 |
#define SIGND(fp) ((fp.l.upper) & 0x8000) |
| 1756 |
#define MANTD(fp) (fp.l.lower)
|
| 1757 |
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS |
| 1758 |
|
| 1759 |
#else
|
| 1760 |
|
| 1761 |
typedef union { |
| 1762 |
double d;
|
| 1763 |
#ifndef WORDS_BIGENDIAN
|
| 1764 |
struct {
|
| 1765 |
unsigned long lower; |
| 1766 |
long upper;
|
| 1767 |
} l; |
| 1768 |
#else
|
| 1769 |
struct {
|
| 1770 |
long upper;
|
| 1771 |
unsigned long lower; |
| 1772 |
} l; |
| 1773 |
#endif
|
| 1774 |
long long ll; |
| 1775 |
} CPU86_LDoubleU; |
| 1776 |
|
| 1777 |
/* the following deal with IEEE double-precision numbers */
|
| 1778 |
#define MAXEXPD 0x7ff |
| 1779 |
#define EXPBIAS 1023 |
| 1780 |
#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF) |
| 1781 |
#define SIGND(fp) ((fp.l.upper) & 0x80000000) |
| 1782 |
#define MANTD(fp) (fp.ll & ((1LL << 52) - 1)) |
| 1783 |
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20) |
| 1784 |
#endif
|
| 1785 |
|
| 1786 |
/* fp load FT0 */
|
| 1787 |
|
| 1788 |
void OPPROTO op_flds_FT0_A0(void) |
| 1789 |
{
|
| 1790 |
#ifdef USE_FP_CONVERT
|
| 1791 |
FP_CONVERT.i32 = ldl((void *)A0);
|
| 1792 |
FT0 = FP_CONVERT.f; |
| 1793 |
#else
|
| 1794 |
FT0 = ldfl((void *)A0);
|
| 1795 |
#endif
|
| 1796 |
} |
| 1797 |
|
| 1798 |
void OPPROTO op_fldl_FT0_A0(void) |
| 1799 |
{
|
| 1800 |
#ifdef USE_FP_CONVERT
|
| 1801 |
FP_CONVERT.i64 = ldq((void *)A0);
|
| 1802 |
FT0 = FP_CONVERT.d; |
| 1803 |
#else
|
| 1804 |
FT0 = ldfq((void *)A0);
|
| 1805 |
#endif
|
| 1806 |
} |
| 1807 |
|
| 1808 |
/* helpers are needed to avoid static constant reference. XXX: find a better way */
|
| 1809 |
#ifdef USE_INT_TO_FLOAT_HELPERS
|
| 1810 |
|
| 1811 |
void helper_fild_FT0_A0(void) |
| 1812 |
{
|
| 1813 |
FT0 = (CPU86_LDouble)ldsw((void *)A0);
|
| 1814 |
} |
| 1815 |
|
| 1816 |
void helper_fildl_FT0_A0(void) |
| 1817 |
{
|
| 1818 |
FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
| 1819 |
} |
| 1820 |
|
| 1821 |
void helper_fildll_FT0_A0(void) |
| 1822 |
{
|
| 1823 |
FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
| 1824 |
} |
| 1825 |
|
| 1826 |
void OPPROTO op_fild_FT0_A0(void) |
| 1827 |
{
|
| 1828 |
helper_fild_FT0_A0(); |
| 1829 |
} |
| 1830 |
|
| 1831 |
void OPPROTO op_fildl_FT0_A0(void) |
| 1832 |
{
|
| 1833 |
helper_fildl_FT0_A0(); |
| 1834 |
} |
| 1835 |
|
| 1836 |
void OPPROTO op_fildll_FT0_A0(void) |
| 1837 |
{
|
| 1838 |
helper_fildll_FT0_A0(); |
| 1839 |
} |
| 1840 |
|
| 1841 |
#else
|
| 1842 |
|
| 1843 |
void OPPROTO op_fild_FT0_A0(void) |
| 1844 |
{
|
| 1845 |
#ifdef USE_FP_CONVERT
|
| 1846 |
FP_CONVERT.i32 = ldsw((void *)A0);
|
| 1847 |
FT0 = (CPU86_LDouble)FP_CONVERT.i32; |
| 1848 |
#else
|
| 1849 |
FT0 = (CPU86_LDouble)ldsw((void *)A0);
|
| 1850 |
#endif
|
| 1851 |
} |
| 1852 |
|
| 1853 |
void OPPROTO op_fildl_FT0_A0(void) |
| 1854 |
{
|
| 1855 |
#ifdef USE_FP_CONVERT
|
| 1856 |
FP_CONVERT.i32 = (int32_t) ldl((void *)A0);
|
| 1857 |
FT0 = (CPU86_LDouble)FP_CONVERT.i32; |
| 1858 |
#else
|
| 1859 |
FT0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
| 1860 |
#endif
|
| 1861 |
} |
| 1862 |
|
| 1863 |
void OPPROTO op_fildll_FT0_A0(void) |
| 1864 |
{
|
| 1865 |
#ifdef USE_FP_CONVERT
|
| 1866 |
FP_CONVERT.i64 = (int64_t) ldq((void *)A0);
|
| 1867 |
FT0 = (CPU86_LDouble)FP_CONVERT.i64; |
| 1868 |
#else
|
| 1869 |
FT0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
| 1870 |
#endif
|
| 1871 |
} |
| 1872 |
#endif
|
| 1873 |
|
| 1874 |
/* fp load ST0 */
|
| 1875 |
|
| 1876 |
void OPPROTO op_flds_ST0_A0(void) |
| 1877 |
{
|
| 1878 |
#ifdef USE_FP_CONVERT
|
| 1879 |
FP_CONVERT.i32 = ldl((void *)A0);
|
| 1880 |
ST0 = FP_CONVERT.f; |
| 1881 |
#else
|
| 1882 |
ST0 = ldfl((void *)A0);
|
| 1883 |
#endif
|
| 1884 |
} |
| 1885 |
|
| 1886 |
void OPPROTO op_fldl_ST0_A0(void) |
| 1887 |
{
|
| 1888 |
#ifdef USE_FP_CONVERT
|
| 1889 |
FP_CONVERT.i64 = ldq((void *)A0);
|
| 1890 |
ST0 = FP_CONVERT.d; |
| 1891 |
#else
|
| 1892 |
ST0 = ldfq((void *)A0);
|
| 1893 |
#endif
|
| 1894 |
} |
| 1895 |
|
| 1896 |
#ifdef USE_X86LDOUBLE
|
| 1897 |
void OPPROTO op_fldt_ST0_A0(void) |
| 1898 |
{
|
| 1899 |
ST0 = *(long double *)A0; |
| 1900 |
} |
| 1901 |
#else
|
| 1902 |
void helper_fldt_ST0_A0(void) |
| 1903 |
{
|
| 1904 |
CPU86_LDoubleU temp; |
| 1905 |
int upper, e;
|
| 1906 |
/* mantissa */
|
| 1907 |
upper = lduw((uint8_t *)A0 + 8);
|
| 1908 |
/* XXX: handle overflow ? */
|
| 1909 |
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ |
| 1910 |
e |= (upper >> 4) & 0x800; /* sign */ |
| 1911 |
temp.ll = ((ldq((void *)A0) >> 11) & ((1LL << 52) - 1)) | ((uint64_t)e << 52); |
| 1912 |
ST0 = temp.d; |
| 1913 |
} |
| 1914 |
|
| 1915 |
void OPPROTO op_fldt_ST0_A0(void) |
| 1916 |
{
|
| 1917 |
helper_fldt_ST0_A0(); |
| 1918 |
} |
| 1919 |
#endif
|
| 1920 |
|
| 1921 |
/* helpers are needed to avoid static constant reference. XXX: find a better way */
|
| 1922 |
#ifdef USE_INT_TO_FLOAT_HELPERS
|
| 1923 |
|
| 1924 |
void helper_fild_ST0_A0(void) |
| 1925 |
{
|
| 1926 |
ST0 = (CPU86_LDouble)ldsw((void *)A0);
|
| 1927 |
} |
| 1928 |
|
| 1929 |
void helper_fildl_ST0_A0(void) |
| 1930 |
{
|
| 1931 |
ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
| 1932 |
} |
| 1933 |
|
| 1934 |
void helper_fildll_ST0_A0(void) |
| 1935 |
{
|
| 1936 |
ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
| 1937 |
} |
| 1938 |
|
| 1939 |
void OPPROTO op_fild_ST0_A0(void) |
| 1940 |
{
|
| 1941 |
helper_fild_ST0_A0(); |
| 1942 |
} |
| 1943 |
|
| 1944 |
void OPPROTO op_fildl_ST0_A0(void) |
| 1945 |
{
|
| 1946 |
helper_fildl_ST0_A0(); |
| 1947 |
} |
| 1948 |
|
| 1949 |
void OPPROTO op_fildll_ST0_A0(void) |
| 1950 |
{
|
| 1951 |
helper_fildll_ST0_A0(); |
| 1952 |
} |
| 1953 |
|
| 1954 |
#else
|
| 1955 |
|
| 1956 |
void OPPROTO op_fild_ST0_A0(void) |
| 1957 |
{
|
| 1958 |
#ifdef USE_FP_CONVERT
|
| 1959 |
FP_CONVERT.i32 = ldsw((void *)A0);
|
| 1960 |
ST0 = (CPU86_LDouble)FP_CONVERT.i32; |
| 1961 |
#else
|
| 1962 |
ST0 = (CPU86_LDouble)ldsw((void *)A0);
|
| 1963 |
#endif
|
| 1964 |
} |
| 1965 |
|
| 1966 |
void OPPROTO op_fildl_ST0_A0(void) |
| 1967 |
{
|
| 1968 |
#ifdef USE_FP_CONVERT
|
| 1969 |
FP_CONVERT.i32 = (int32_t) ldl((void *)A0);
|
| 1970 |
ST0 = (CPU86_LDouble)FP_CONVERT.i32; |
| 1971 |
#else
|
| 1972 |
ST0 = (CPU86_LDouble)((int32_t)ldl((void *)A0));
|
| 1973 |
#endif
|
| 1974 |
} |
| 1975 |
|
| 1976 |
void OPPROTO op_fildll_ST0_A0(void) |
| 1977 |
{
|
| 1978 |
#ifdef USE_FP_CONVERT
|
| 1979 |
FP_CONVERT.i64 = (int64_t) ldq((void *)A0);
|
| 1980 |
ST0 = (CPU86_LDouble)FP_CONVERT.i64; |
| 1981 |
#else
|
| 1982 |
ST0 = (CPU86_LDouble)((int64_t)ldq((void *)A0));
|
| 1983 |
#endif
|
| 1984 |
} |
| 1985 |
|
| 1986 |
#endif
|
| 1987 |
|
| 1988 |
/* fp store */
|
| 1989 |
|
| 1990 |
void OPPROTO op_fsts_ST0_A0(void) |
| 1991 |
{
|
| 1992 |
#ifdef USE_FP_CONVERT
|
| 1993 |
FP_CONVERT.d = ST0; |
| 1994 |
stfl((void *)A0, FP_CONVERT.f);
|
| 1995 |
#else
|
| 1996 |
stfl((void *)A0, (float)ST0); |
| 1997 |
#endif
|
| 1998 |
} |
| 1999 |
|
| 2000 |
void OPPROTO op_fstl_ST0_A0(void) |
| 2001 |
{
|
| 2002 |
stfq((void *)A0, (double)ST0); |
| 2003 |
} |
| 2004 |
|
| 2005 |
#ifdef USE_X86LDOUBLE
|
| 2006 |
void OPPROTO op_fstt_ST0_A0(void) |
| 2007 |
{
|
| 2008 |
*(long double *)A0 = ST0; |
| 2009 |
} |
| 2010 |
#else
|
| 2011 |
void helper_fstt_ST0_A0(void) |
| 2012 |
{
|
| 2013 |
CPU86_LDoubleU temp; |
| 2014 |
int e;
|
| 2015 |
temp.d = ST0; |
| 2016 |
/* mantissa */
|
| 2017 |
stq((void *)A0, (MANTD(temp) << 11) | (1LL << 63)); |
| 2018 |
/* exponent + sign */
|
| 2019 |
e = EXPD(temp) - EXPBIAS + 16383;
|
| 2020 |
e |= SIGND(temp) >> 16;
|
| 2021 |
stw((uint8_t *)A0 + 8, e);
|
| 2022 |
} |
| 2023 |
|
| 2024 |
void OPPROTO op_fstt_ST0_A0(void) |
| 2025 |
{
|
| 2026 |
helper_fstt_ST0_A0(); |
| 2027 |
} |
| 2028 |
#endif
|
| 2029 |
|
| 2030 |
void OPPROTO op_fist_ST0_A0(void) |
| 2031 |
{
|
| 2032 |
#if defined(__sparc__) && !defined(__sparc_v9__)
|
| 2033 |
register CPU86_LDouble d asm("o0"); |
| 2034 |
#else
|
| 2035 |
CPU86_LDouble d; |
| 2036 |
#endif
|
| 2037 |
int val;
|
| 2038 |
|
| 2039 |
d = ST0; |
| 2040 |
val = lrint(d); |
| 2041 |
stw((void *)A0, val);
|
| 2042 |
} |
| 2043 |
|
| 2044 |
void OPPROTO op_fistl_ST0_A0(void) |
| 2045 |
{
|
| 2046 |
#if defined(__sparc__) && !defined(__sparc_v9__)
|
| 2047 |
register CPU86_LDouble d asm("o0"); |
| 2048 |
#else
|
| 2049 |
CPU86_LDouble d; |
| 2050 |
#endif
|
| 2051 |
int val;
|
| 2052 |
|
| 2053 |
d = ST0; |
| 2054 |
val = lrint(d); |
| 2055 |
stl((void *)A0, val);
|
| 2056 |
} |
| 2057 |
|
| 2058 |
void OPPROTO op_fistll_ST0_A0(void) |
| 2059 |
{
|
| 2060 |
#if defined(__sparc__) && !defined(__sparc_v9__)
|
| 2061 |
register CPU86_LDouble d asm("o0"); |
| 2062 |
#else
|
| 2063 |
CPU86_LDouble d; |
| 2064 |
#endif
|
| 2065 |
int64_t val; |
| 2066 |
|
| 2067 |
d = ST0; |
| 2068 |
val = llrint(d); |
| 2069 |
stq((void *)A0, val);
|
| 2070 |
} |
| 2071 |
|
| 2072 |
/* BCD ops */
|
| 2073 |
|
| 2074 |
#define MUL10(iv) ( iv + iv + (iv << 3) ) |
| 2075 |
|
| 2076 |
void helper_fbld_ST0_A0(void) |
| 2077 |
{
|
| 2078 |
uint8_t *seg; |
| 2079 |
CPU86_LDouble fpsrcop; |
| 2080 |
int m32i;
|
| 2081 |
unsigned int v; |
| 2082 |
|
| 2083 |
/* in this code, seg/m32i will be used as temporary ptr/int */
|
| 2084 |
seg = (uint8_t *)A0 + 8;
|
| 2085 |
v = ldub(seg--); |
| 2086 |
/* XXX: raise exception */
|
| 2087 |
if (v != 0) |
| 2088 |
return;
|
| 2089 |
v = ldub(seg--); |
| 2090 |
/* XXX: raise exception */
|
| 2091 |
if ((v & 0xf0) != 0) |
| 2092 |
return;
|
| 2093 |
m32i = v; /* <-- d14 */
|
| 2094 |
v = ldub(seg--); |
| 2095 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d13 */ |
| 2096 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d12 */ |
| 2097 |
v = ldub(seg--); |
| 2098 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d11 */ |
| 2099 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d10 */ |
| 2100 |
v = ldub(seg--); |
| 2101 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d9 */ |
| 2102 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d8 */ |
| 2103 |
fpsrcop = ((CPU86_LDouble)m32i) * 100000000.0; |
| 2104 |
|
| 2105 |
v = ldub(seg--); |
| 2106 |
m32i = (v >> 4); /* <-- d7 */ |
| 2107 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d6 */ |
| 2108 |
v = ldub(seg--); |
| 2109 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d5 */ |
| 2110 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d4 */ |
| 2111 |
v = ldub(seg--); |
| 2112 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d3 */ |
| 2113 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d2 */ |
| 2114 |
v = ldub(seg); |
| 2115 |
m32i = MUL10(m32i) + (v >> 4); /* <-- val * 10 + d1 */ |
| 2116 |
m32i = MUL10(m32i) + (v & 0xf); /* <-- val * 10 + d0 */ |
| 2117 |
fpsrcop += ((CPU86_LDouble)m32i); |
| 2118 |
if ( ldub(seg+9) & 0x80 ) |
| 2119 |
fpsrcop = -fpsrcop; |
| 2120 |
ST0 = fpsrcop; |
| 2121 |
} |
| 2122 |
|
| 2123 |
void OPPROTO op_fbld_ST0_A0(void) |
| 2124 |
{
|
| 2125 |
helper_fbld_ST0_A0(); |
| 2126 |
} |
| 2127 |
|
| 2128 |
void helper_fbst_ST0_A0(void) |
| 2129 |
{
|
| 2130 |
CPU86_LDouble fptemp; |
| 2131 |
CPU86_LDouble fpsrcop; |
| 2132 |
int v;
|
| 2133 |
uint8_t *mem_ref, *mem_end; |
| 2134 |
|
| 2135 |
fpsrcop = rint(ST0); |
| 2136 |
mem_ref = (uint8_t *)A0; |
| 2137 |
mem_end = mem_ref + 8;
|
| 2138 |
if ( fpsrcop < 0.0 ) { |
| 2139 |
stw(mem_end, 0x8000);
|
| 2140 |
fpsrcop = -fpsrcop; |
| 2141 |
} else {
|
| 2142 |
stw(mem_end, 0x0000);
|
| 2143 |
} |
| 2144 |
while (mem_ref < mem_end) {
|
| 2145 |
if (fpsrcop == 0.0) |
| 2146 |
break;
|
| 2147 |
fptemp = floor(fpsrcop/10.0); |
| 2148 |
v = ((int)(fpsrcop - fptemp*10.0)); |
| 2149 |
if (fptemp == 0.0) { |
| 2150 |
stb(mem_ref++, v); |
| 2151 |
break;
|
| 2152 |
} |
| 2153 |
fpsrcop = fptemp; |
| 2154 |
fptemp = floor(fpsrcop/10.0); |
| 2155 |
v |= (((int)(fpsrcop - fptemp*10.0)) << 4); |
| 2156 |
stb(mem_ref++, v); |
| 2157 |
fpsrcop = fptemp; |
| 2158 |
} |
| 2159 |
while (mem_ref < mem_end) {
|
| 2160 |
stb(mem_ref++, 0);
|
| 2161 |
} |
| 2162 |
} |
| 2163 |
|
| 2164 |
void OPPROTO op_fbst_ST0_A0(void) |
| 2165 |
{
|
| 2166 |
helper_fbst_ST0_A0(); |
| 2167 |
} |
| 2168 |
|
| 2169 |
/* FPU move */
|
| 2170 |
|
| 2171 |
static inline void fpush(void) |
| 2172 |
{
|
| 2173 |
env->fpstt = (env->fpstt - 1) & 7; |
| 2174 |
env->fptags[env->fpstt] = 0; /* validate stack entry */ |
| 2175 |
} |
| 2176 |
|
| 2177 |
static inline void fpop(void) |
| 2178 |
{
|
| 2179 |
env->fptags[env->fpstt] = 1; /* invvalidate stack entry */ |
| 2180 |
env->fpstt = (env->fpstt + 1) & 7; |
| 2181 |
} |
| 2182 |
|
| 2183 |
void OPPROTO op_fpush(void) |
| 2184 |
{
|
| 2185 |
fpush(); |
| 2186 |
} |
| 2187 |
|
| 2188 |
void OPPROTO op_fpop(void) |
| 2189 |
{
|
| 2190 |
fpop(); |
| 2191 |
} |
| 2192 |
|
| 2193 |
void OPPROTO op_fdecstp(void) |
| 2194 |
{
|
| 2195 |
env->fpstt = (env->fpstt - 1) & 7; |
| 2196 |
env->fpus &= (~0x4700);
|
| 2197 |
} |
| 2198 |
|
| 2199 |
void OPPROTO op_fincstp(void) |
| 2200 |
{
|
| 2201 |
env->fpstt = (env->fpstt + 1) & 7; |
| 2202 |
env->fpus &= (~0x4700);
|
| 2203 |
} |
| 2204 |
|
| 2205 |
void OPPROTO op_fmov_ST0_FT0(void) |
| 2206 |
{
|
| 2207 |
ST0 = FT0; |
| 2208 |
} |
| 2209 |
|
| 2210 |
void OPPROTO op_fmov_FT0_STN(void) |
| 2211 |
{
|
| 2212 |
FT0 = ST(PARAM1); |
| 2213 |
} |
| 2214 |
|
| 2215 |
void OPPROTO op_fmov_ST0_STN(void) |
| 2216 |
{
|
| 2217 |
ST0 = ST(PARAM1); |
| 2218 |
} |
| 2219 |
|
| 2220 |
void OPPROTO op_fmov_STN_ST0(void) |
| 2221 |
{
|
| 2222 |
ST(PARAM1) = ST0; |
| 2223 |
} |
| 2224 |
|
| 2225 |
void OPPROTO op_fxchg_ST0_STN(void) |
| 2226 |
{
|
| 2227 |
CPU86_LDouble tmp; |
| 2228 |
tmp = ST(PARAM1); |
| 2229 |
ST(PARAM1) = ST0; |
| 2230 |
ST0 = tmp; |
| 2231 |
} |
| 2232 |
|
| 2233 |
/* FPU operations */
|
| 2234 |
|
| 2235 |
/* XXX: handle nans */
|
| 2236 |
void OPPROTO op_fcom_ST0_FT0(void) |
| 2237 |
{
|
| 2238 |
env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */ |
| 2239 |
if (ST0 < FT0)
|
| 2240 |
env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ |
| 2241 |
else if (ST0 == FT0) |
| 2242 |
env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ |
| 2243 |
FORCE_RET(); |
| 2244 |
} |
| 2245 |
|
| 2246 |
/* XXX: handle nans */
|
| 2247 |
void OPPROTO op_fucom_ST0_FT0(void) |
| 2248 |
{
|
| 2249 |
env->fpus &= (~0x4500); /* (C3,C2,C0) <-- 000 */ |
| 2250 |
if (ST0 < FT0)
|
| 2251 |
env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ |
| 2252 |
else if (ST0 == FT0) |
| 2253 |
env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ |
| 2254 |
FORCE_RET(); |
| 2255 |
} |
| 2256 |
|
| 2257 |
void OPPROTO op_fadd_ST0_FT0(void) |
| 2258 |
{
|
| 2259 |
ST0 += FT0; |
| 2260 |
} |
| 2261 |
|
| 2262 |
void OPPROTO op_fmul_ST0_FT0(void) |
| 2263 |
{
|
| 2264 |
ST0 *= FT0; |
| 2265 |
} |
| 2266 |
|
| 2267 |
void OPPROTO op_fsub_ST0_FT0(void) |
| 2268 |
{
|
| 2269 |
ST0 -= FT0; |
| 2270 |
} |
| 2271 |
|
| 2272 |
void OPPROTO op_fsubr_ST0_FT0(void) |
| 2273 |
{
|
| 2274 |
ST0 = FT0 - ST0; |
| 2275 |
} |
| 2276 |
|
| 2277 |
void OPPROTO op_fdiv_ST0_FT0(void) |
| 2278 |
{
|
| 2279 |
ST0 /= FT0; |
| 2280 |
} |
| 2281 |
|
| 2282 |
void OPPROTO op_fdivr_ST0_FT0(void) |
| 2283 |
{
|
| 2284 |
ST0 = FT0 / ST0; |
| 2285 |
} |
| 2286 |
|
| 2287 |
/* fp operations between STN and ST0 */
|
| 2288 |
|
| 2289 |
void OPPROTO op_fadd_STN_ST0(void) |
| 2290 |
{
|
| 2291 |
ST(PARAM1) += ST0; |
| 2292 |
} |
| 2293 |
|
| 2294 |
void OPPROTO op_fmul_STN_ST0(void) |
| 2295 |
{
|
| 2296 |
ST(PARAM1) *= ST0; |
| 2297 |
} |
| 2298 |
|
| 2299 |
void OPPROTO op_fsub_STN_ST0(void) |
| 2300 |
{
|
| 2301 |
ST(PARAM1) -= ST0; |
| 2302 |
} |
| 2303 |
|
| 2304 |
void OPPROTO op_fsubr_STN_ST0(void) |
| 2305 |
{
|
| 2306 |
CPU86_LDouble *p; |
| 2307 |
p = &ST(PARAM1); |
| 2308 |
*p = ST0 - *p; |
| 2309 |
} |
| 2310 |
|
| 2311 |
void OPPROTO op_fdiv_STN_ST0(void) |
| 2312 |
{
|
| 2313 |
ST(PARAM1) /= ST0; |
| 2314 |
} |
| 2315 |
|
| 2316 |
void OPPROTO op_fdivr_STN_ST0(void) |
| 2317 |
{
|
| 2318 |
CPU86_LDouble *p; |
| 2319 |
p = &ST(PARAM1); |
| 2320 |
*p = ST0 / *p; |
| 2321 |
} |
| 2322 |
|
| 2323 |
/* misc FPU operations */
|
| 2324 |
void OPPROTO op_fchs_ST0(void) |
| 2325 |
{
|
| 2326 |
ST0 = -ST0; |
| 2327 |
} |
| 2328 |
|
| 2329 |
void OPPROTO op_fabs_ST0(void) |
| 2330 |
{
|
| 2331 |
ST0 = fabs(ST0); |
| 2332 |
} |
| 2333 |
|
| 2334 |
void helper_fxam_ST0(void) |
| 2335 |
{
|
| 2336 |
CPU86_LDoubleU temp; |
| 2337 |
int expdif;
|
| 2338 |
|
| 2339 |
temp.d = ST0; |
| 2340 |
|
| 2341 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 2342 |
if (SIGND(temp))
|
| 2343 |
env->fpus |= 0x200; /* C1 <-- 1 */ |
| 2344 |
|
| 2345 |
expdif = EXPD(temp); |
| 2346 |
if (expdif == MAXEXPD) {
|
| 2347 |
if (MANTD(temp) == 0) |
| 2348 |
env->fpus |= 0x500 /*Infinity*/; |
| 2349 |
else
|
| 2350 |
env->fpus |= 0x100 /*NaN*/; |
| 2351 |
} else if (expdif == 0) { |
| 2352 |
if (MANTD(temp) == 0) |
| 2353 |
env->fpus |= 0x4000 /*Zero*/; |
| 2354 |
else
|
| 2355 |
env->fpus |= 0x4400 /*Denormal*/; |
| 2356 |
} else {
|
| 2357 |
env->fpus |= 0x400;
|
| 2358 |
} |
| 2359 |
} |
| 2360 |
|
| 2361 |
void OPPROTO op_fxam_ST0(void) |
| 2362 |
{
|
| 2363 |
helper_fxam_ST0(); |
| 2364 |
} |
| 2365 |
|
| 2366 |
void OPPROTO op_fld1_ST0(void) |
| 2367 |
{
|
| 2368 |
ST0 = *(CPU86_LDouble *)&f15rk[1];
|
| 2369 |
} |
| 2370 |
|
| 2371 |
void OPPROTO op_fldl2t_ST0(void) |
| 2372 |
{
|
| 2373 |
ST0 = *(CPU86_LDouble *)&f15rk[6];
|
| 2374 |
} |
| 2375 |
|
| 2376 |
void OPPROTO op_fldl2e_ST0(void) |
| 2377 |
{
|
| 2378 |
ST0 = *(CPU86_LDouble *)&f15rk[5];
|
| 2379 |
} |
| 2380 |
|
| 2381 |
void OPPROTO op_fldpi_ST0(void) |
| 2382 |
{
|
| 2383 |
ST0 = *(CPU86_LDouble *)&f15rk[2];
|
| 2384 |
} |
| 2385 |
|
| 2386 |
void OPPROTO op_fldlg2_ST0(void) |
| 2387 |
{
|
| 2388 |
ST0 = *(CPU86_LDouble *)&f15rk[3];
|
| 2389 |
} |
| 2390 |
|
| 2391 |
void OPPROTO op_fldln2_ST0(void) |
| 2392 |
{
|
| 2393 |
ST0 = *(CPU86_LDouble *)&f15rk[4];
|
| 2394 |
} |
| 2395 |
|
| 2396 |
void OPPROTO op_fldz_ST0(void) |
| 2397 |
{
|
| 2398 |
ST0 = *(CPU86_LDouble *)&f15rk[0];
|
| 2399 |
} |
| 2400 |
|
| 2401 |
void OPPROTO op_fldz_FT0(void) |
| 2402 |
{
|
| 2403 |
ST0 = *(CPU86_LDouble *)&f15rk[0];
|
| 2404 |
} |
| 2405 |
|
| 2406 |
void helper_f2xm1(void) |
| 2407 |
{
|
| 2408 |
ST0 = pow(2.0,ST0) - 1.0; |
| 2409 |
} |
| 2410 |
|
| 2411 |
void helper_fyl2x(void) |
| 2412 |
{
|
| 2413 |
CPU86_LDouble fptemp; |
| 2414 |
|
| 2415 |
fptemp = ST0; |
| 2416 |
if (fptemp>0.0){ |
| 2417 |
fptemp = log(fptemp)/log(2.0); /* log2(ST) */ |
| 2418 |
ST1 *= fptemp; |
| 2419 |
fpop(); |
| 2420 |
} else {
|
| 2421 |
env->fpus &= (~0x4700);
|
| 2422 |
env->fpus |= 0x400;
|
| 2423 |
} |
| 2424 |
} |
| 2425 |
|
| 2426 |
void helper_fptan(void) |
| 2427 |
{
|
| 2428 |
CPU86_LDouble fptemp; |
| 2429 |
|
| 2430 |
fptemp = ST0; |
| 2431 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 2432 |
env->fpus |= 0x400;
|
| 2433 |
} else {
|
| 2434 |
ST0 = tan(fptemp); |
| 2435 |
fpush(); |
| 2436 |
ST0 = 1.0; |
| 2437 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 2438 |
/* the above code is for |arg| < 2**52 only */
|
| 2439 |
} |
| 2440 |
} |
| 2441 |
|
| 2442 |
void helper_fpatan(void) |
| 2443 |
{
|
| 2444 |
CPU86_LDouble fptemp, fpsrcop; |
| 2445 |
|
| 2446 |
fpsrcop = ST1; |
| 2447 |
fptemp = ST0; |
| 2448 |
ST1 = atan2(fpsrcop,fptemp); |
| 2449 |
fpop(); |
| 2450 |
} |
| 2451 |
|
| 2452 |
void helper_fxtract(void) |
| 2453 |
{
|
| 2454 |
CPU86_LDoubleU temp; |
| 2455 |
unsigned int expdif; |
| 2456 |
|
| 2457 |
temp.d = ST0; |
| 2458 |
expdif = EXPD(temp) - EXPBIAS; |
| 2459 |
/*DP exponent bias*/
|
| 2460 |
ST0 = expdif; |
| 2461 |
fpush(); |
| 2462 |
BIASEXPONENT(temp); |
| 2463 |
ST0 = temp.d; |
| 2464 |
} |
| 2465 |
|
| 2466 |
void helper_fprem1(void) |
| 2467 |
{
|
| 2468 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
| 2469 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
| 2470 |
int expdif;
|
| 2471 |
int q;
|
| 2472 |
|
| 2473 |
fpsrcop = ST0; |
| 2474 |
fptemp = ST1; |
| 2475 |
fpsrcop1.d = fpsrcop; |
| 2476 |
fptemp1.d = fptemp; |
| 2477 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
| 2478 |
if (expdif < 53) { |
| 2479 |
dblq = fpsrcop / fptemp; |
| 2480 |
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq); |
| 2481 |
ST0 = fpsrcop - fptemp*dblq; |
| 2482 |
q = (int)dblq; /* cutting off top bits is assumed here */ |
| 2483 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 2484 |
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
| 2485 |
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */ |
| 2486 |
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */ |
| 2487 |
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */ |
| 2488 |
} else {
|
| 2489 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
| 2490 |
fptemp = pow(2.0, expdif-50); |
| 2491 |
fpsrcop = (ST0 / ST1) / fptemp; |
| 2492 |
/* fpsrcop = integer obtained by rounding to the nearest */
|
| 2493 |
fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)? |
| 2494 |
floor(fpsrcop): ceil(fpsrcop); |
| 2495 |
ST0 -= (ST1 * fpsrcop * fptemp); |
| 2496 |
} |
| 2497 |
} |
| 2498 |
|
| 2499 |
void helper_fprem(void) |
| 2500 |
{
|
| 2501 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
| 2502 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
| 2503 |
int expdif;
|
| 2504 |
int q;
|
| 2505 |
|
| 2506 |
fpsrcop = ST0; |
| 2507 |
fptemp = ST1; |
| 2508 |
fpsrcop1.d = fpsrcop; |
| 2509 |
fptemp1.d = fptemp; |
| 2510 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
| 2511 |
if ( expdif < 53 ) { |
| 2512 |
dblq = fpsrcop / fptemp; |
| 2513 |
dblq = (dblq < 0.0)? ceil(dblq): floor(dblq); |
| 2514 |
ST0 = fpsrcop - fptemp*dblq; |
| 2515 |
q = (int)dblq; /* cutting off top bits is assumed here */ |
| 2516 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 2517 |
/* (C0,C1,C3) <-- (q2,q1,q0) */
|
| 2518 |
env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */ |
| 2519 |
env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */ |
| 2520 |
env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */ |
| 2521 |
} else {
|
| 2522 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
| 2523 |
fptemp = pow(2.0, expdif-50); |
| 2524 |
fpsrcop = (ST0 / ST1) / fptemp; |
| 2525 |
/* fpsrcop = integer obtained by chopping */
|
| 2526 |
fpsrcop = (fpsrcop < 0.0)? |
| 2527 |
-(floor(fabs(fpsrcop))): floor(fpsrcop); |
| 2528 |
ST0 -= (ST1 * fpsrcop * fptemp); |
| 2529 |
} |
| 2530 |
} |
| 2531 |
|
| 2532 |
void helper_fyl2xp1(void) |
| 2533 |
{
|
| 2534 |
CPU86_LDouble fptemp; |
| 2535 |
|
| 2536 |
fptemp = ST0; |
| 2537 |
if ((fptemp+1.0)>0.0) { |
| 2538 |
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */ |
| 2539 |
ST1 *= fptemp; |
| 2540 |
fpop(); |
| 2541 |
} else {
|
| 2542 |
env->fpus &= (~0x4700);
|
| 2543 |
env->fpus |= 0x400;
|
| 2544 |
} |
| 2545 |
} |
| 2546 |
|
| 2547 |
void helper_fsqrt(void) |
| 2548 |
{
|
| 2549 |
CPU86_LDouble fptemp; |
| 2550 |
|
| 2551 |
fptemp = ST0; |
| 2552 |
if (fptemp<0.0) { |
| 2553 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
| 2554 |
env->fpus |= 0x400;
|
| 2555 |
} |
| 2556 |
ST0 = sqrt(fptemp); |
| 2557 |
} |
| 2558 |
|
| 2559 |
void helper_fsincos(void) |
| 2560 |
{
|
| 2561 |
CPU86_LDouble fptemp; |
| 2562 |
|
| 2563 |
fptemp = ST0; |
| 2564 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 2565 |
env->fpus |= 0x400;
|
| 2566 |
} else {
|
| 2567 |
ST0 = sin(fptemp); |
| 2568 |
fpush(); |
| 2569 |
ST0 = cos(fptemp); |
| 2570 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 2571 |
/* the above code is for |arg| < 2**63 only */
|
| 2572 |
} |
| 2573 |
} |
| 2574 |
|
| 2575 |
void helper_frndint(void) |
| 2576 |
{
|
| 2577 |
ST0 = rint(ST0); |
| 2578 |
} |
| 2579 |
|
| 2580 |
void helper_fscale(void) |
| 2581 |
{
|
| 2582 |
CPU86_LDouble fpsrcop, fptemp; |
| 2583 |
|
| 2584 |
fpsrcop = 2.0; |
| 2585 |
fptemp = pow(fpsrcop,ST1); |
| 2586 |
ST0 *= fptemp; |
| 2587 |
} |
| 2588 |
|
| 2589 |
void helper_fsin(void) |
| 2590 |
{
|
| 2591 |
CPU86_LDouble fptemp; |
| 2592 |
|
| 2593 |
fptemp = ST0; |
| 2594 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 2595 |
env->fpus |= 0x400;
|
| 2596 |
} else {
|
| 2597 |
ST0 = sin(fptemp); |
| 2598 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 2599 |
/* the above code is for |arg| < 2**53 only */
|
| 2600 |
} |
| 2601 |
} |
| 2602 |
|
| 2603 |
void helper_fcos(void) |
| 2604 |
{
|
| 2605 |
CPU86_LDouble fptemp; |
| 2606 |
|
| 2607 |
fptemp = ST0; |
| 2608 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
| 2609 |
env->fpus |= 0x400;
|
| 2610 |
} else {
|
| 2611 |
ST0 = cos(fptemp); |
| 2612 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
| 2613 |
/* the above code is for |arg5 < 2**63 only */
|
| 2614 |
} |
| 2615 |
} |
| 2616 |
|
| 2617 |
/* associated heplers to reduce generated code length and to simplify
|
| 2618 |
relocation (FP constants are usually stored in .rodata section) */
|
| 2619 |
|
| 2620 |
void OPPROTO op_f2xm1(void) |
| 2621 |
{
|
| 2622 |
helper_f2xm1(); |
| 2623 |
} |
| 2624 |
|
| 2625 |
void OPPROTO op_fyl2x(void) |
| 2626 |
{
|
| 2627 |
helper_fyl2x(); |
| 2628 |
} |
| 2629 |
|
| 2630 |
void OPPROTO op_fptan(void) |
| 2631 |
{
|
| 2632 |
helper_fptan(); |
| 2633 |
} |
| 2634 |
|
| 2635 |
void OPPROTO op_fpatan(void) |
| 2636 |
{
|
| 2637 |
helper_fpatan(); |
| 2638 |
} |
| 2639 |
|
| 2640 |
void OPPROTO op_fxtract(void) |
| 2641 |
{
|
| 2642 |
helper_fxtract(); |
| 2643 |
} |
| 2644 |
|
| 2645 |
void OPPROTO op_fprem1(void) |
| 2646 |
{
|
| 2647 |
helper_fprem1(); |
| 2648 |
} |
| 2649 |
|
| 2650 |
|
| 2651 |
void OPPROTO op_fprem(void) |
| 2652 |
{
|
| 2653 |
helper_fprem(); |
| 2654 |
} |
| 2655 |
|
| 2656 |
void OPPROTO op_fyl2xp1(void) |
| 2657 |
{
|
| 2658 |
helper_fyl2xp1(); |
| 2659 |
} |
| 2660 |
|
| 2661 |
void OPPROTO op_fsqrt(void) |
| 2662 |
{
|
| 2663 |
helper_fsqrt(); |
| 2664 |
} |
| 2665 |
|
| 2666 |
void OPPROTO op_fsincos(void) |
| 2667 |
{
|
| 2668 |
helper_fsincos(); |
| 2669 |
} |
| 2670 |
|
| 2671 |
void OPPROTO op_frndint(void) |
| 2672 |
{
|
| 2673 |
helper_frndint(); |
| 2674 |
} |
| 2675 |
|
| 2676 |
void OPPROTO op_fscale(void) |
| 2677 |
{
|
| 2678 |
helper_fscale(); |
| 2679 |
} |
| 2680 |
|
| 2681 |
void OPPROTO op_fsin(void) |
| 2682 |
{
|
| 2683 |
helper_fsin(); |
| 2684 |
} |
| 2685 |
|
| 2686 |
void OPPROTO op_fcos(void) |
| 2687 |
{
|
| 2688 |
helper_fcos(); |
| 2689 |
} |
| 2690 |
|
| 2691 |
void OPPROTO op_fnstsw_A0(void) |
| 2692 |
{
|
| 2693 |
int fpus;
|
| 2694 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
| 2695 |
stw((void *)A0, fpus);
|
| 2696 |
} |
| 2697 |
|
| 2698 |
void OPPROTO op_fnstsw_EAX(void) |
| 2699 |
{
|
| 2700 |
int fpus;
|
| 2701 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
| 2702 |
EAX = (EAX & 0xffff0000) | fpus;
|
| 2703 |
} |
| 2704 |
|
| 2705 |
void OPPROTO op_fnstcw_A0(void) |
| 2706 |
{
|
| 2707 |
stw((void *)A0, env->fpuc);
|
| 2708 |
} |
| 2709 |
|
| 2710 |
void OPPROTO op_fldcw_A0(void) |
| 2711 |
{
|
| 2712 |
int rnd_type;
|
| 2713 |
env->fpuc = lduw((void *)A0);
|
| 2714 |
/* set rounding mode */
|
| 2715 |
switch(env->fpuc & RC_MASK) {
|
| 2716 |
default:
|
| 2717 |
case RC_NEAR:
|
| 2718 |
rnd_type = FE_TONEAREST; |
| 2719 |
break;
|
| 2720 |
case RC_DOWN:
|
| 2721 |
rnd_type = FE_DOWNWARD; |
| 2722 |
break;
|
| 2723 |
case RC_UP:
|
| 2724 |
rnd_type = FE_UPWARD; |
| 2725 |
break;
|
| 2726 |
case RC_CHOP:
|
| 2727 |
rnd_type = FE_TOWARDZERO; |
| 2728 |
break;
|
| 2729 |
} |
| 2730 |
fesetround(rnd_type); |
| 2731 |
} |
| 2732 |
|
| 2733 |
void OPPROTO op_fclex(void) |
| 2734 |
{
|
| 2735 |
env->fpus &= 0x7f00;
|
| 2736 |
} |
| 2737 |
|
| 2738 |
void OPPROTO op_fninit(void) |
| 2739 |
{
|
| 2740 |
env->fpus = 0;
|
| 2741 |
env->fpstt = 0;
|
| 2742 |
env->fpuc = 0x37f;
|
| 2743 |
env->fptags[0] = 1; |
| 2744 |
env->fptags[1] = 1; |
| 2745 |
env->fptags[2] = 1; |
| 2746 |
env->fptags[3] = 1; |
| 2747 |
env->fptags[4] = 1; |
| 2748 |
env->fptags[5] = 1; |
| 2749 |
env->fptags[6] = 1; |
| 2750 |
env->fptags[7] = 1; |
| 2751 |
} |
| 2752 |
|
| 2753 |
/* threading support */
|
| 2754 |
void OPPROTO op_lock(void) |
| 2755 |
{
|
| 2756 |
cpu_lock(); |
| 2757 |
} |
| 2758 |
|
| 2759 |
void OPPROTO op_unlock(void) |
| 2760 |
{
|
| 2761 |
cpu_unlock(); |
| 2762 |
} |