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/*
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* i386 micro operations (included several times to generate
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* different operand sizes)
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#define DATA_BITS (1 << (3 + SHIFT)) |
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#define SHIFT_MASK (DATA_BITS - 1) |
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#define SIGN_MASK (1 << (DATA_BITS - 1)) |
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|
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#if DATA_BITS == 8 |
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#define SUFFIX b
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#define DATA_TYPE uint8_t
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#define DATA_STYPE int8_t
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#define DATA_MASK 0xff |
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#elif DATA_BITS == 16 |
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#define SUFFIX w
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#define DATA_TYPE uint16_t
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#define DATA_STYPE int16_t
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#define DATA_MASK 0xffff |
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#elif DATA_BITS == 32 |
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#define SUFFIX l
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#define DATA_TYPE uint32_t
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#define DATA_STYPE int32_t
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#define DATA_MASK 0xffffffff |
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#else
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#error unhandled operand size
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#endif
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/* dynamic flags computation */
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static int glue(compute_all_add, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_DST - CC_SRC; |
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cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1; |
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pf = parity_table[(uint8_t)CC_DST]; |
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af = (CC_DST ^ src1 ^ src2) & 0x10;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O; |
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return cf | pf | af | zf | sf | of;
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} |
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static int glue(compute_c_add, SUFFIX)(void) |
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{
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int src1, cf;
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src1 = CC_SRC; |
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cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1; |
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return cf;
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} |
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static int glue(compute_all_adc, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_DST - CC_SRC - 1;
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cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1; |
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pf = parity_table[(uint8_t)CC_DST]; |
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af = (CC_DST ^ src1 ^ src2) & 0x10;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O; |
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return cf | pf | af | zf | sf | of;
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} |
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static int glue(compute_c_adc, SUFFIX)(void) |
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{
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int src1, cf;
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src1 = CC_SRC; |
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cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1; |
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return cf;
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} |
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static int glue(compute_all_sub, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST; |
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cf = (DATA_TYPE)src1 < (DATA_TYPE)src2; |
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pf = parity_table[(uint8_t)CC_DST]; |
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af = (CC_DST ^ src1 ^ src2) & 0x10;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
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return cf | pf | af | zf | sf | of;
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} |
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static int glue(compute_c_sub, SUFFIX)(void) |
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{
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int src1, src2, cf;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST; |
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cf = (DATA_TYPE)src1 < (DATA_TYPE)src2; |
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return cf;
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} |
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static int glue(compute_all_sbb, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST - 1;
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cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2; |
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pf = parity_table[(uint8_t)CC_DST]; |
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af = (CC_DST ^ src1 ^ src2) & 0x10;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
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return cf | pf | af | zf | sf | of;
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} |
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static int glue(compute_c_sbb, SUFFIX)(void) |
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{
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int src1, src2, cf;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST - 1;
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cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2; |
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return cf;
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} |
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static int glue(compute_all_logic, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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cf = 0;
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pf = parity_table[(uint8_t)CC_DST]; |
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af = 0;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = 0;
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return cf | pf | af | zf | sf | of;
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} |
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static int glue(compute_c_logic, SUFFIX)(void) |
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{
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return 0; |
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} |
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static int glue(compute_all_inc, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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int src1, src2;
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src1 = CC_DST - 1;
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src2 = 1;
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cf = CC_SRC; |
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pf = parity_table[(uint8_t)CC_DST]; |
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af = (CC_DST ^ src1 ^ src2) & 0x10;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = ((CC_DST & DATA_MASK) == SIGN_MASK) << 11;
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return cf | pf | af | zf | sf | of;
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} |
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#if DATA_BITS == 32 |
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static int glue(compute_c_inc, SUFFIX)(void) |
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{
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return CC_SRC;
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} |
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#endif
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static int glue(compute_all_dec, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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int src1, src2;
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src1 = CC_DST + 1;
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src2 = 1;
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cf = CC_SRC; |
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pf = parity_table[(uint8_t)CC_DST]; |
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af = (CC_DST ^ src1 ^ src2) & 0x10;
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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of = ((CC_DST & DATA_MASK) == ((uint32_t)SIGN_MASK - 1)) << 11; |
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return cf | pf | af | zf | sf | of;
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} |
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static int glue(compute_all_shl, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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cf = (CC_SRC >> (DATA_BITS - 1)) & CC_C;
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pf = parity_table[(uint8_t)CC_DST]; |
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af = 0; /* undefined */ |
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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/* of is defined if shift count == 1 */
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of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
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return cf | pf | af | zf | sf | of;
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} |
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|
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#if DATA_BITS == 32 |
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static int glue(compute_c_shl, SUFFIX)(void) |
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{
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return CC_SRC & 1; |
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} |
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#endif
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static int glue(compute_all_sar, SUFFIX)(void) |
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{
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int cf, pf, af, zf, sf, of;
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cf = CC_SRC & 1;
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pf = parity_table[(uint8_t)CC_DST]; |
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af = 0; /* undefined */ |
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zf = ((DATA_TYPE)CC_DST == 0) << 6; |
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sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; |
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/* of is defined if shift count == 1 */
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of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
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return cf | pf | af | zf | sf | of;
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} |
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/* various optimized jumps cases */
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void OPPROTO glue(op_jb_sub, SUFFIX)(void) |
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{
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST; |
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|
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if ((DATA_TYPE)src1 < (DATA_TYPE)src2)
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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void OPPROTO glue(op_jz_sub, SUFFIX)(void) |
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{
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if ((DATA_TYPE)CC_DST == 0) |
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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void OPPROTO glue(op_jbe_sub, SUFFIX)(void) |
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{
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST; |
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|
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if ((DATA_TYPE)src1 <= (DATA_TYPE)src2)
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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void OPPROTO glue(op_js_sub, SUFFIX)(void) |
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{
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if (CC_DST & SIGN_MASK)
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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void OPPROTO glue(op_jl_sub, SUFFIX)(void) |
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{
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST; |
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|
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if ((DATA_STYPE)src1 < (DATA_STYPE)src2)
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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void OPPROTO glue(op_jle_sub, SUFFIX)(void) |
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{
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int src1, src2;
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src1 = CC_SRC; |
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src2 = CC_SRC - CC_DST; |
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|
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if ((DATA_STYPE)src1 <= (DATA_STYPE)src2)
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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/* oldies */
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|
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#if DATA_BITS >= 16 |
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|
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void OPPROTO glue(op_loopnz, SUFFIX)(void) |
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{
|
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unsigned int tmp; |
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int eflags;
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eflags = cc_table[CC_OP].compute_all(); |
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tmp = (ECX - 1) & DATA_MASK;
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ECX = (ECX & ~DATA_MASK) | tmp; |
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if (tmp != 0 && !(eflags & CC_Z)) |
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EIP = PARAM1; |
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else
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EIP = PARAM2; |
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FORCE_RET(); |
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} |
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|
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void OPPROTO glue(op_loopz, SUFFIX)(void) |
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{
|
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unsigned int tmp; |
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int eflags;
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eflags = cc_table[CC_OP].compute_all(); |
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tmp = (ECX - 1) & DATA_MASK;
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ECX = (ECX & ~DATA_MASK) | tmp; |
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if (tmp != 0 && (eflags & CC_Z)) |
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EIP = PARAM1; |
| 327 |
else
|
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EIP = PARAM2; |
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FORCE_RET(); |
| 330 |
} |
| 331 |
|
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void OPPROTO glue(op_loop, SUFFIX)(void) |
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{
|
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unsigned int tmp; |
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tmp = (ECX - 1) & DATA_MASK;
|
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ECX = (ECX & ~DATA_MASK) | tmp; |
| 337 |
if (tmp != 0) |
| 338 |
EIP = PARAM1; |
| 339 |
else
|
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EIP = PARAM2; |
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FORCE_RET(); |
| 342 |
} |
| 343 |
|
| 344 |
void OPPROTO glue(op_jecxz, SUFFIX)(void) |
| 345 |
{
|
| 346 |
if ((DATA_TYPE)ECX == 0) |
| 347 |
EIP = PARAM1; |
| 348 |
else
|
| 349 |
EIP = PARAM2; |
| 350 |
FORCE_RET(); |
| 351 |
} |
| 352 |
|
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#endif
|
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|
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/* various optimized set cases */
|
| 356 |
|
| 357 |
void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void) |
| 358 |
{
|
| 359 |
int src1, src2;
|
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src1 = CC_SRC; |
| 361 |
src2 = CC_SRC - CC_DST; |
| 362 |
|
| 363 |
T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2); |
| 364 |
} |
| 365 |
|
| 366 |
void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void) |
| 367 |
{
|
| 368 |
T0 = ((DATA_TYPE)CC_DST == 0);
|
| 369 |
} |
| 370 |
|
| 371 |
void OPPROTO glue(op_setbe_T0_sub, SUFFIX)(void) |
| 372 |
{
|
| 373 |
int src1, src2;
|
| 374 |
src1 = CC_SRC; |
| 375 |
src2 = CC_SRC - CC_DST; |
| 376 |
|
| 377 |
T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2); |
| 378 |
} |
| 379 |
|
| 380 |
void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void) |
| 381 |
{
|
| 382 |
T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1; |
| 383 |
} |
| 384 |
|
| 385 |
void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void) |
| 386 |
{
|
| 387 |
int src1, src2;
|
| 388 |
src1 = CC_SRC; |
| 389 |
src2 = CC_SRC - CC_DST; |
| 390 |
|
| 391 |
T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2); |
| 392 |
} |
| 393 |
|
| 394 |
void OPPROTO glue(op_setle_T0_sub, SUFFIX)(void) |
| 395 |
{
|
| 396 |
int src1, src2;
|
| 397 |
src1 = CC_SRC; |
| 398 |
src2 = CC_SRC - CC_DST; |
| 399 |
|
| 400 |
T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2); |
| 401 |
} |
| 402 |
|
| 403 |
/* shifts */
|
| 404 |
|
| 405 |
void OPPROTO glue(glue(op_rol, SUFFIX), _T0_T1_cc)(void) |
| 406 |
{
|
| 407 |
int count, src;
|
| 408 |
count = T1 & SHIFT_MASK; |
| 409 |
if (count) {
|
| 410 |
CC_SRC = cc_table[CC_OP].compute_all() & ~(CC_O | CC_C); |
| 411 |
src = T0; |
| 412 |
T0 &= DATA_MASK; |
| 413 |
T0 = (T0 << count) | (T0 >> (DATA_BITS - count)); |
| 414 |
CC_SRC |= (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
| 415 |
(T0 & CC_C); |
| 416 |
CC_OP = CC_OP_EFLAGS; |
| 417 |
} |
| 418 |
FORCE_RET(); |
| 419 |
} |
| 420 |
|
| 421 |
void OPPROTO glue(glue(op_rol, SUFFIX), _T0_T1)(void) |
| 422 |
{
|
| 423 |
int count;
|
| 424 |
count = T1 & SHIFT_MASK; |
| 425 |
if (count) {
|
| 426 |
T0 &= DATA_MASK; |
| 427 |
T0 = (T0 << count) | (T0 >> (DATA_BITS - count)); |
| 428 |
} |
| 429 |
FORCE_RET(); |
| 430 |
} |
| 431 |
|
| 432 |
void OPPROTO glue(glue(op_ror, SUFFIX), _T0_T1_cc)(void) |
| 433 |
{
|
| 434 |
int count, src;
|
| 435 |
count = T1 & SHIFT_MASK; |
| 436 |
if (count) {
|
| 437 |
CC_SRC = cc_table[CC_OP].compute_all() & ~(CC_O | CC_C); |
| 438 |
src = T0; |
| 439 |
T0 &= DATA_MASK; |
| 440 |
T0 = (T0 >> count) | (T0 << (DATA_BITS - count)); |
| 441 |
CC_SRC |= (lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
| 442 |
((T0 >> (DATA_BITS - 1)) & CC_C);
|
| 443 |
CC_OP = CC_OP_EFLAGS; |
| 444 |
} |
| 445 |
FORCE_RET(); |
| 446 |
} |
| 447 |
|
| 448 |
void OPPROTO glue(glue(op_ror, SUFFIX), _T0_T1)(void) |
| 449 |
{
|
| 450 |
int count;
|
| 451 |
count = T1 & SHIFT_MASK; |
| 452 |
if (count) {
|
| 453 |
T0 &= DATA_MASK; |
| 454 |
T0 = (T0 >> count) | (T0 << (DATA_BITS - count)); |
| 455 |
} |
| 456 |
FORCE_RET(); |
| 457 |
} |
| 458 |
|
| 459 |
void OPPROTO glue(glue(op_rcl, SUFFIX), _T0_T1_cc)(void) |
| 460 |
{
|
| 461 |
int count, res, eflags;
|
| 462 |
unsigned int src; |
| 463 |
|
| 464 |
count = T1 & 0x1f;
|
| 465 |
#if DATA_BITS == 16 |
| 466 |
count = rclw_table[count]; |
| 467 |
#elif DATA_BITS == 8 |
| 468 |
count = rclb_table[count]; |
| 469 |
#endif
|
| 470 |
if (count) {
|
| 471 |
eflags = cc_table[CC_OP].compute_all(); |
| 472 |
T0 &= DATA_MASK; |
| 473 |
src = T0; |
| 474 |
res = (T0 << count) | ((eflags & CC_C) << (count - 1));
|
| 475 |
if (count > 1) |
| 476 |
res |= T0 >> (DATA_BITS + 1 - count);
|
| 477 |
T0 = res; |
| 478 |
CC_SRC = (eflags & ~(CC_C | CC_O)) | |
| 479 |
(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
| 480 |
((src >> (DATA_BITS - count)) & CC_C); |
| 481 |
CC_OP = CC_OP_EFLAGS; |
| 482 |
} |
| 483 |
FORCE_RET(); |
| 484 |
} |
| 485 |
|
| 486 |
void OPPROTO glue(glue(op_rcr, SUFFIX), _T0_T1_cc)(void) |
| 487 |
{
|
| 488 |
int count, res, eflags;
|
| 489 |
unsigned int src; |
| 490 |
|
| 491 |
count = T1 & 0x1f;
|
| 492 |
#if DATA_BITS == 16 |
| 493 |
count = rclw_table[count]; |
| 494 |
#elif DATA_BITS == 8 |
| 495 |
count = rclb_table[count]; |
| 496 |
#endif
|
| 497 |
if (count) {
|
| 498 |
eflags = cc_table[CC_OP].compute_all(); |
| 499 |
T0 &= DATA_MASK; |
| 500 |
src = T0; |
| 501 |
res = (T0 >> count) | ((eflags & CC_C) << (DATA_BITS - count)); |
| 502 |
if (count > 1) |
| 503 |
res |= T0 << (DATA_BITS + 1 - count);
|
| 504 |
T0 = res; |
| 505 |
CC_SRC = (eflags & ~(CC_C | CC_O)) | |
| 506 |
(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
| 507 |
((src >> (count - 1)) & CC_C);
|
| 508 |
CC_OP = CC_OP_EFLAGS; |
| 509 |
} |
| 510 |
FORCE_RET(); |
| 511 |
} |
| 512 |
|
| 513 |
void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1_cc)(void) |
| 514 |
{
|
| 515 |
int count;
|
| 516 |
count = T1 & 0x1f;
|
| 517 |
if (count) {
|
| 518 |
CC_SRC = (DATA_TYPE)T0 << (count - 1);
|
| 519 |
T0 = T0 << count; |
| 520 |
CC_DST = T0; |
| 521 |
CC_OP = CC_OP_SHLB + SHIFT; |
| 522 |
} |
| 523 |
FORCE_RET(); |
| 524 |
} |
| 525 |
|
| 526 |
void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1)(void) |
| 527 |
{
|
| 528 |
int count;
|
| 529 |
count = T1 & 0x1f;
|
| 530 |
T0 = T0 << count; |
| 531 |
FORCE_RET(); |
| 532 |
} |
| 533 |
|
| 534 |
void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1_cc)(void) |
| 535 |
{
|
| 536 |
int count;
|
| 537 |
count = T1 & 0x1f;
|
| 538 |
if (count) {
|
| 539 |
T0 &= DATA_MASK; |
| 540 |
CC_SRC = T0 >> (count - 1);
|
| 541 |
T0 = T0 >> count; |
| 542 |
CC_DST = T0; |
| 543 |
CC_OP = CC_OP_SARB + SHIFT; |
| 544 |
} |
| 545 |
FORCE_RET(); |
| 546 |
} |
| 547 |
|
| 548 |
void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1)(void) |
| 549 |
{
|
| 550 |
int count;
|
| 551 |
count = T1 & 0x1f;
|
| 552 |
T0 &= DATA_MASK; |
| 553 |
T0 = T0 >> count; |
| 554 |
FORCE_RET(); |
| 555 |
} |
| 556 |
|
| 557 |
void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1_cc)(void) |
| 558 |
{
|
| 559 |
int count, src;
|
| 560 |
count = T1 & 0x1f;
|
| 561 |
if (count) {
|
| 562 |
src = (DATA_STYPE)T0; |
| 563 |
CC_SRC = src >> (count - 1);
|
| 564 |
T0 = src >> count; |
| 565 |
CC_DST = T0; |
| 566 |
CC_OP = CC_OP_SARB + SHIFT; |
| 567 |
} |
| 568 |
FORCE_RET(); |
| 569 |
} |
| 570 |
|
| 571 |
void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1)(void) |
| 572 |
{
|
| 573 |
int count, src;
|
| 574 |
count = T1 & 0x1f;
|
| 575 |
src = (DATA_STYPE)T0; |
| 576 |
T0 = src >> count; |
| 577 |
FORCE_RET(); |
| 578 |
} |
| 579 |
|
| 580 |
#if DATA_BITS == 16 |
| 581 |
/* XXX: overflow flag might be incorrect in some cases in shldw */
|
| 582 |
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_im_cc)(void) |
| 583 |
{
|
| 584 |
int count;
|
| 585 |
unsigned int res; |
| 586 |
count = PARAM1; |
| 587 |
T1 &= 0xffff;
|
| 588 |
res = T1 | (T0 << 16);
|
| 589 |
CC_SRC = res >> (32 - count);
|
| 590 |
res <<= count; |
| 591 |
if (count > 16) |
| 592 |
res |= T1 << (count - 16);
|
| 593 |
T0 = res >> 16;
|
| 594 |
CC_DST = T0; |
| 595 |
} |
| 596 |
|
| 597 |
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_ECX_cc)(void) |
| 598 |
{
|
| 599 |
int count;
|
| 600 |
unsigned int res; |
| 601 |
count = ECX & 0x1f;
|
| 602 |
if (count) {
|
| 603 |
T1 &= 0xffff;
|
| 604 |
res = T1 | (T0 << 16);
|
| 605 |
CC_SRC = res >> (32 - count);
|
| 606 |
res <<= count; |
| 607 |
if (count > 16) |
| 608 |
res |= T1 << (count - 16);
|
| 609 |
T0 = res >> 16;
|
| 610 |
CC_DST = T0; |
| 611 |
CC_OP = CC_OP_SARB + SHIFT; |
| 612 |
} |
| 613 |
} |
| 614 |
|
| 615 |
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_im_cc)(void) |
| 616 |
{
|
| 617 |
int count;
|
| 618 |
unsigned int res; |
| 619 |
|
| 620 |
count = PARAM1; |
| 621 |
res = (T0 & 0xffff) | (T1 << 16); |
| 622 |
CC_SRC = res >> (count - 1);
|
| 623 |
res >>= count; |
| 624 |
if (count > 16) |
| 625 |
res |= T1 << (32 - count);
|
| 626 |
T0 = res; |
| 627 |
CC_DST = T0; |
| 628 |
} |
| 629 |
|
| 630 |
|
| 631 |
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_ECX_cc)(void) |
| 632 |
{
|
| 633 |
int count;
|
| 634 |
unsigned int res; |
| 635 |
|
| 636 |
count = ECX & 0x1f;
|
| 637 |
if (count) {
|
| 638 |
res = (T0 & 0xffff) | (T1 << 16); |
| 639 |
CC_SRC = res >> (count - 1);
|
| 640 |
res >>= count; |
| 641 |
if (count > 16) |
| 642 |
res |= T1 << (32 - count);
|
| 643 |
T0 = res; |
| 644 |
CC_DST = T0; |
| 645 |
CC_OP = CC_OP_SARB + SHIFT; |
| 646 |
} |
| 647 |
} |
| 648 |
#endif
|
| 649 |
|
| 650 |
#if DATA_BITS == 32 |
| 651 |
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_im_cc)(void) |
| 652 |
{
|
| 653 |
int count;
|
| 654 |
count = PARAM1; |
| 655 |
T0 &= DATA_MASK; |
| 656 |
T1 &= DATA_MASK; |
| 657 |
CC_SRC = T0 << (count - 1);
|
| 658 |
T0 = (T0 << count) | (T1 >> (DATA_BITS - count)); |
| 659 |
CC_DST = T0; |
| 660 |
} |
| 661 |
|
| 662 |
void OPPROTO glue(glue(op_shld, SUFFIX), _T0_T1_ECX_cc)(void) |
| 663 |
{
|
| 664 |
int count;
|
| 665 |
count = ECX & 0x1f;
|
| 666 |
if (count) {
|
| 667 |
T0 &= DATA_MASK; |
| 668 |
T1 &= DATA_MASK; |
| 669 |
CC_SRC = T0 << (count - 1);
|
| 670 |
T0 = (T0 << count) | (T1 >> (DATA_BITS - count)); |
| 671 |
CC_DST = T0; |
| 672 |
CC_OP = CC_OP_SHLB + SHIFT; |
| 673 |
} |
| 674 |
} |
| 675 |
|
| 676 |
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_im_cc)(void) |
| 677 |
{
|
| 678 |
int count;
|
| 679 |
count = PARAM1; |
| 680 |
T0 &= DATA_MASK; |
| 681 |
T1 &= DATA_MASK; |
| 682 |
CC_SRC = T0 >> (count - 1);
|
| 683 |
T0 = (T0 >> count) | (T1 << (DATA_BITS - count)); |
| 684 |
CC_DST = T0; |
| 685 |
} |
| 686 |
|
| 687 |
|
| 688 |
void OPPROTO glue(glue(op_shrd, SUFFIX), _T0_T1_ECX_cc)(void) |
| 689 |
{
|
| 690 |
int count;
|
| 691 |
count = ECX & 0x1f;
|
| 692 |
if (count) {
|
| 693 |
T0 &= DATA_MASK; |
| 694 |
T1 &= DATA_MASK; |
| 695 |
CC_SRC = T0 >> (count - 1);
|
| 696 |
T0 = (T0 >> count) | (T1 << (DATA_BITS - count)); |
| 697 |
CC_DST = T0; |
| 698 |
CC_OP = CC_OP_SARB + SHIFT; |
| 699 |
} |
| 700 |
} |
| 701 |
#endif
|
| 702 |
|
| 703 |
/* carry add/sub (we only need to set CC_OP differently) */
|
| 704 |
|
| 705 |
void OPPROTO glue(glue(op_adc, SUFFIX), _T0_T1_cc)(void) |
| 706 |
{
|
| 707 |
int cf;
|
| 708 |
cf = cc_table[CC_OP].compute_c(); |
| 709 |
CC_SRC = T0; |
| 710 |
T0 = T0 + T1 + cf; |
| 711 |
CC_DST = T0; |
| 712 |
CC_OP = CC_OP_ADDB + SHIFT + cf * 3;
|
| 713 |
} |
| 714 |
|
| 715 |
void OPPROTO glue(glue(op_sbb, SUFFIX), _T0_T1_cc)(void) |
| 716 |
{
|
| 717 |
int cf;
|
| 718 |
cf = cc_table[CC_OP].compute_c(); |
| 719 |
CC_SRC = T0; |
| 720 |
T0 = T0 - T1 - cf; |
| 721 |
CC_DST = T0; |
| 722 |
CC_OP = CC_OP_SUBB + SHIFT + cf * 3;
|
| 723 |
} |
| 724 |
|
| 725 |
void OPPROTO glue(glue(op_cmpxchg, SUFFIX), _T0_T1_EAX_cc)(void) |
| 726 |
{
|
| 727 |
CC_SRC = EAX; |
| 728 |
CC_DST = EAX - T0; |
| 729 |
if ((DATA_TYPE)CC_DST == 0) { |
| 730 |
T0 = T1; |
| 731 |
} else {
|
| 732 |
EAX = (EAX & ~DATA_MASK) | (T0 & DATA_MASK); |
| 733 |
} |
| 734 |
FORCE_RET(); |
| 735 |
} |
| 736 |
|
| 737 |
/* bit operations */
|
| 738 |
#if DATA_BITS >= 16 |
| 739 |
|
| 740 |
void OPPROTO glue(glue(op_bt, SUFFIX), _T0_T1_cc)(void) |
| 741 |
{
|
| 742 |
int count;
|
| 743 |
count = T1 & SHIFT_MASK; |
| 744 |
CC_SRC = T0 >> count; |
| 745 |
} |
| 746 |
|
| 747 |
void OPPROTO glue(glue(op_bts, SUFFIX), _T0_T1_cc)(void) |
| 748 |
{
|
| 749 |
int count;
|
| 750 |
count = T1 & SHIFT_MASK; |
| 751 |
CC_SRC = T0 >> count; |
| 752 |
T0 |= (1 << count);
|
| 753 |
} |
| 754 |
|
| 755 |
void OPPROTO glue(glue(op_btr, SUFFIX), _T0_T1_cc)(void) |
| 756 |
{
|
| 757 |
int count;
|
| 758 |
count = T1 & SHIFT_MASK; |
| 759 |
CC_SRC = T0 >> count; |
| 760 |
T0 &= ~(1 << count);
|
| 761 |
} |
| 762 |
|
| 763 |
void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void) |
| 764 |
{
|
| 765 |
int count;
|
| 766 |
count = T1 & SHIFT_MASK; |
| 767 |
CC_SRC = T0 >> count; |
| 768 |
T0 ^= (1 << count);
|
| 769 |
} |
| 770 |
|
| 771 |
void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void) |
| 772 |
{
|
| 773 |
int res, count;
|
| 774 |
res = T0 & DATA_MASK; |
| 775 |
if (res != 0) { |
| 776 |
count = 0;
|
| 777 |
while ((res & 1) == 0) { |
| 778 |
count++; |
| 779 |
res >>= 1;
|
| 780 |
} |
| 781 |
T0 = count; |
| 782 |
CC_DST = 1; /* ZF = 1 */ |
| 783 |
} else {
|
| 784 |
CC_DST = 0; /* ZF = 1 */ |
| 785 |
} |
| 786 |
FORCE_RET(); |
| 787 |
} |
| 788 |
|
| 789 |
void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void) |
| 790 |
{
|
| 791 |
int res, count;
|
| 792 |
res = T0 & DATA_MASK; |
| 793 |
if (res != 0) { |
| 794 |
count = DATA_BITS - 1;
|
| 795 |
while ((res & SIGN_MASK) == 0) { |
| 796 |
count--; |
| 797 |
res <<= 1;
|
| 798 |
} |
| 799 |
T0 = count; |
| 800 |
CC_DST = 1; /* ZF = 1 */ |
| 801 |
} else {
|
| 802 |
CC_DST = 0; /* ZF = 1 */ |
| 803 |
} |
| 804 |
FORCE_RET(); |
| 805 |
} |
| 806 |
|
| 807 |
#endif
|
| 808 |
|
| 809 |
/* string operations */
|
| 810 |
/* XXX: maybe use lower level instructions to ease exception handling */
|
| 811 |
|
| 812 |
void OPPROTO glue(op_movs, SUFFIX)(void) |
| 813 |
{
|
| 814 |
int v;
|
| 815 |
v = glue(ldu, SUFFIX)((void *)ESI);
|
| 816 |
glue(st, SUFFIX)((void *)EDI, v);
|
| 817 |
ESI += (DF << SHIFT); |
| 818 |
EDI += (DF << SHIFT); |
| 819 |
} |
| 820 |
|
| 821 |
void OPPROTO glue(op_rep_movs, SUFFIX)(void) |
| 822 |
{
|
| 823 |
int v, inc;
|
| 824 |
inc = (DF << SHIFT); |
| 825 |
while (ECX != 0) { |
| 826 |
v = glue(ldu, SUFFIX)((void *)ESI);
|
| 827 |
glue(st, SUFFIX)((void *)EDI, v);
|
| 828 |
ESI += inc; |
| 829 |
EDI += inc; |
| 830 |
ECX--; |
| 831 |
} |
| 832 |
FORCE_RET(); |
| 833 |
} |
| 834 |
|
| 835 |
void OPPROTO glue(op_stos, SUFFIX)(void) |
| 836 |
{
|
| 837 |
glue(st, SUFFIX)((void *)EDI, EAX);
|
| 838 |
EDI += (DF << SHIFT); |
| 839 |
} |
| 840 |
|
| 841 |
void OPPROTO glue(op_rep_stos, SUFFIX)(void) |
| 842 |
{
|
| 843 |
int inc;
|
| 844 |
inc = (DF << SHIFT); |
| 845 |
while (ECX != 0) { |
| 846 |
glue(st, SUFFIX)((void *)EDI, EAX);
|
| 847 |
EDI += inc; |
| 848 |
ECX--; |
| 849 |
} |
| 850 |
FORCE_RET(); |
| 851 |
} |
| 852 |
|
| 853 |
void OPPROTO glue(op_lods, SUFFIX)(void) |
| 854 |
{
|
| 855 |
int v;
|
| 856 |
v = glue(ldu, SUFFIX)((void *)ESI);
|
| 857 |
#if SHIFT == 0 |
| 858 |
EAX = (EAX & ~0xff) | v;
|
| 859 |
#elif SHIFT == 1 |
| 860 |
EAX = (EAX & ~0xffff) | v;
|
| 861 |
#else
|
| 862 |
EAX = v; |
| 863 |
#endif
|
| 864 |
ESI += (DF << SHIFT); |
| 865 |
} |
| 866 |
|
| 867 |
/* don't know if it is used */
|
| 868 |
void OPPROTO glue(op_rep_lods, SUFFIX)(void) |
| 869 |
{
|
| 870 |
int v, inc;
|
| 871 |
inc = (DF << SHIFT); |
| 872 |
while (ECX != 0) { |
| 873 |
v = glue(ldu, SUFFIX)((void *)ESI);
|
| 874 |
#if SHIFT == 0 |
| 875 |
EAX = (EAX & ~0xff) | v;
|
| 876 |
#elif SHIFT == 1 |
| 877 |
EAX = (EAX & ~0xffff) | v;
|
| 878 |
#else
|
| 879 |
EAX = v; |
| 880 |
#endif
|
| 881 |
ESI += inc; |
| 882 |
ECX--; |
| 883 |
} |
| 884 |
FORCE_RET(); |
| 885 |
} |
| 886 |
|
| 887 |
void OPPROTO glue(op_scas, SUFFIX)(void) |
| 888 |
{
|
| 889 |
int v;
|
| 890 |
|
| 891 |
v = glue(ldu, SUFFIX)((void *)EDI);
|
| 892 |
EDI += (DF << SHIFT); |
| 893 |
CC_SRC = EAX; |
| 894 |
CC_DST = EAX - v; |
| 895 |
} |
| 896 |
|
| 897 |
void OPPROTO glue(op_repz_scas, SUFFIX)(void) |
| 898 |
{
|
| 899 |
int v1, v2, inc;
|
| 900 |
|
| 901 |
if (ECX != 0) { |
| 902 |
/* NOTE: the flags are not modified if ECX == 0 */
|
| 903 |
v1 = EAX & DATA_MASK; |
| 904 |
inc = (DF << SHIFT); |
| 905 |
do {
|
| 906 |
v2 = glue(ldu, SUFFIX)((void *)EDI);
|
| 907 |
EDI += inc; |
| 908 |
ECX--; |
| 909 |
if (v1 != v2)
|
| 910 |
break;
|
| 911 |
} while (ECX != 0); |
| 912 |
CC_SRC = v1; |
| 913 |
CC_DST = v1 - v2; |
| 914 |
CC_OP = CC_OP_SUBB + SHIFT; |
| 915 |
} |
| 916 |
FORCE_RET(); |
| 917 |
} |
| 918 |
|
| 919 |
void OPPROTO glue(op_repnz_scas, SUFFIX)(void) |
| 920 |
{
|
| 921 |
int v1, v2, inc;
|
| 922 |
|
| 923 |
if (ECX != 0) { |
| 924 |
/* NOTE: the flags are not modified if ECX == 0 */
|
| 925 |
v1 = EAX & DATA_MASK; |
| 926 |
inc = (DF << SHIFT); |
| 927 |
do {
|
| 928 |
v2 = glue(ldu, SUFFIX)((void *)EDI);
|
| 929 |
EDI += inc; |
| 930 |
ECX--; |
| 931 |
if (v1 == v2)
|
| 932 |
break;
|
| 933 |
} while (ECX != 0); |
| 934 |
CC_SRC = v1; |
| 935 |
CC_DST = v1 - v2; |
| 936 |
CC_OP = CC_OP_SUBB + SHIFT; |
| 937 |
} |
| 938 |
FORCE_RET(); |
| 939 |
} |
| 940 |
|
| 941 |
void OPPROTO glue(op_cmps, SUFFIX)(void) |
| 942 |
{
|
| 943 |
int v1, v2;
|
| 944 |
v1 = glue(ldu, SUFFIX)((void *)ESI);
|
| 945 |
v2 = glue(ldu, SUFFIX)((void *)EDI);
|
| 946 |
ESI += (DF << SHIFT); |
| 947 |
EDI += (DF << SHIFT); |
| 948 |
CC_SRC = v1; |
| 949 |
CC_DST = v1 - v2; |
| 950 |
} |
| 951 |
|
| 952 |
void OPPROTO glue(op_repz_cmps, SUFFIX)(void) |
| 953 |
{
|
| 954 |
int v1, v2, inc;
|
| 955 |
if (ECX != 0) { |
| 956 |
inc = (DF << SHIFT); |
| 957 |
do {
|
| 958 |
v1 = glue(ldu, SUFFIX)((void *)ESI);
|
| 959 |
v2 = glue(ldu, SUFFIX)((void *)EDI);
|
| 960 |
ESI += inc; |
| 961 |
EDI += inc; |
| 962 |
ECX--; |
| 963 |
if (v1 != v2)
|
| 964 |
break;
|
| 965 |
} while (ECX != 0); |
| 966 |
CC_SRC = v1; |
| 967 |
CC_DST = v1 - v2; |
| 968 |
CC_OP = CC_OP_SUBB + SHIFT; |
| 969 |
} |
| 970 |
FORCE_RET(); |
| 971 |
} |
| 972 |
|
| 973 |
void OPPROTO glue(op_repnz_cmps, SUFFIX)(void) |
| 974 |
{
|
| 975 |
int v1, v2, inc;
|
| 976 |
if (ECX != 0) { |
| 977 |
inc = (DF << SHIFT); |
| 978 |
do {
|
| 979 |
v1 = glue(ldu, SUFFIX)((void *)ESI);
|
| 980 |
v2 = glue(ldu, SUFFIX)((void *)EDI);
|
| 981 |
ESI += inc; |
| 982 |
EDI += inc; |
| 983 |
ECX--; |
| 984 |
if (v1 == v2)
|
| 985 |
break;
|
| 986 |
} while (ECX != 0); |
| 987 |
CC_SRC = v1; |
| 988 |
CC_DST = v1 - v2; |
| 989 |
CC_OP = CC_OP_SUBB + SHIFT; |
| 990 |
} |
| 991 |
FORCE_RET(); |
| 992 |
} |
| 993 |
|
| 994 |
/* port I/O */
|
| 995 |
|
| 996 |
void OPPROTO glue(op_outs, SUFFIX)(void) |
| 997 |
{
|
| 998 |
int v, dx;
|
| 999 |
dx = EDX & 0xffff;
|
| 1000 |
v = glue(ldu, SUFFIX)((void *)ESI);
|
| 1001 |
glue(cpu_x86_out, SUFFIX)(dx, v); |
| 1002 |
ESI += (DF << SHIFT); |
| 1003 |
} |
| 1004 |
|
| 1005 |
void OPPROTO glue(op_rep_outs, SUFFIX)(void) |
| 1006 |
{
|
| 1007 |
int v, dx, inc;
|
| 1008 |
inc = (DF << SHIFT); |
| 1009 |
dx = EDX & 0xffff;
|
| 1010 |
while (ECX != 0) { |
| 1011 |
v = glue(ldu, SUFFIX)((void *)ESI);
|
| 1012 |
glue(cpu_x86_out, SUFFIX)(dx, v); |
| 1013 |
ESI += inc; |
| 1014 |
ECX--; |
| 1015 |
} |
| 1016 |
FORCE_RET(); |
| 1017 |
} |
| 1018 |
|
| 1019 |
void OPPROTO glue(op_ins, SUFFIX)(void) |
| 1020 |
{
|
| 1021 |
int v, dx;
|
| 1022 |
dx = EDX & 0xffff;
|
| 1023 |
v = glue(cpu_x86_in, SUFFIX)(dx); |
| 1024 |
glue(st, SUFFIX)((void *)EDI, v);
|
| 1025 |
EDI += (DF << SHIFT); |
| 1026 |
} |
| 1027 |
|
| 1028 |
void OPPROTO glue(op_rep_ins, SUFFIX)(void) |
| 1029 |
{
|
| 1030 |
int v, dx, inc;
|
| 1031 |
inc = (DF << SHIFT); |
| 1032 |
dx = EDX & 0xffff;
|
| 1033 |
while (ECX != 0) { |
| 1034 |
v = glue(cpu_x86_in, SUFFIX)(dx); |
| 1035 |
glue(st, SUFFIX)((void *)EDI, v);
|
| 1036 |
EDI += (DF << SHIFT); |
| 1037 |
ECX--; |
| 1038 |
} |
| 1039 |
FORCE_RET(); |
| 1040 |
} |
| 1041 |
|
| 1042 |
void OPPROTO glue(glue(op_out, SUFFIX), _T0_T1)(void) |
| 1043 |
{
|
| 1044 |
glue(cpu_x86_out, SUFFIX)(T0 & 0xffff, T1 & DATA_MASK);
|
| 1045 |
} |
| 1046 |
|
| 1047 |
void OPPROTO glue(glue(op_in, SUFFIX), _T0_T1)(void) |
| 1048 |
{
|
| 1049 |
T1 = glue(cpu_x86_in, SUFFIX)(T0 & 0xffff);
|
| 1050 |
} |
| 1051 |
|
| 1052 |
#undef DATA_BITS
|
| 1053 |
#undef SHIFT_MASK
|
| 1054 |
#undef SIGN_MASK
|
| 1055 |
#undef DATA_TYPE
|
| 1056 |
#undef DATA_STYPE
|
| 1057 |
#undef DATA_MASK
|
| 1058 |
#undef SUFFIX
|