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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 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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#define DATA_BITS (1 << (3 + SHIFT))
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#define SHIFT_MASK (DATA_BITS - 1)
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#define SIGN_MASK (((target_ulong)1) << (DATA_BITS - 1))
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#if DATA_BITS <= 32
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#define SHIFT1_MASK 0x1f
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#else
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#define SHIFT1_MASK 0x3f
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#endif
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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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#elif DATA_BITS == 64
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#define SUFFIX q
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#define DATA_TYPE uint64_t
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#define DATA_STYPE int64_t
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#define DATA_MASK 0xffffffffffffffffULL
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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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    target_long 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 cf;
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    target_long src1;
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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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    target_long 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 cf;
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    target_long src1;
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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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    target_long src1, src2;
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    src1 = CC_DST + CC_SRC;
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    src2 = CC_SRC;
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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 cf;
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    target_long src1, src2;
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    src1 = CC_DST + CC_SRC;
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    src2 = CC_SRC;
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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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    target_long src1, src2;
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    src1 = CC_DST + CC_SRC + 1;
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    src2 = CC_SRC;
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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 cf;
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    target_long src1, src2;
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    src1 = CC_DST + CC_SRC + 1;
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    src2 = CC_SRC;
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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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    target_long 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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    target_long 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) == ((target_ulong)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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static int glue(compute_c_shl, SUFFIX)(void)
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{
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    return (CC_SRC >> (DATA_BITS - 1)) & CC_C;
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}
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#if DATA_BITS == 32
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static int glue(compute_c_sar, 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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#if DATA_BITS == 32
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static int glue(compute_c_mul, SUFFIX)(void)
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{
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    int cf;
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    cf = (CC_SRC != 0);
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    return cf;
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}
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#endif
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/* NOTE: we compute the flags like the P4. On olders CPUs, only OF and
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   CF are modified and it is slower to do that. */
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static int glue(compute_all_mul, SUFFIX)(void)
258
{
259
    int cf, pf, af, zf, sf, of;
260
    cf = (CC_SRC != 0);
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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 = cf << 11;
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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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    target_long src1, src2;
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    src1 = CC_DST + CC_SRC;
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    src2 = CC_SRC;
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    if ((DATA_TYPE)src1 < (DATA_TYPE)src2)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
280
}
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void OPPROTO glue(op_jz_sub, SUFFIX)(void)
283
{
284
    if ((DATA_TYPE)CC_DST == 0)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
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}
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void OPPROTO glue(op_jnz_sub, SUFFIX)(void)
290
{
291
    if ((DATA_TYPE)CC_DST != 0)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
294
}
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void OPPROTO glue(op_jbe_sub, SUFFIX)(void)
297
{
298
    target_long src1, src2;
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    src1 = CC_DST + CC_SRC;
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    src2 = CC_SRC;
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302
    if ((DATA_TYPE)src1 <= (DATA_TYPE)src2)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
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}
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void OPPROTO glue(op_js_sub, SUFFIX)(void)
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{
309
    if (CC_DST & SIGN_MASK)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
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}
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void OPPROTO glue(op_jl_sub, SUFFIX)(void)
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{
316
    target_long src1, src2;
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    src1 = CC_DST + CC_SRC;
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    src2 = CC_SRC;
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320
    if ((DATA_STYPE)src1 < (DATA_STYPE)src2)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
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}
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325
void OPPROTO glue(op_jle_sub, SUFFIX)(void)
326
{
327
    target_long src1, src2;
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    src1 = CC_DST + CC_SRC;
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    src2 = CC_SRC;
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331
    if ((DATA_STYPE)src1 <= (DATA_STYPE)src2)
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
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}
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/* oldies */
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338
#if DATA_BITS >= 16
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340
void OPPROTO glue(op_loopnz, SUFFIX)(void)
341
{
342
    if ((DATA_TYPE)ECX != 0 && !(T0 & CC_Z))
343
        GOTO_LABEL_PARAM(1);
344
    FORCE_RET();
345
}
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347
void OPPROTO glue(op_loopz, SUFFIX)(void)
348
{
349
    if ((DATA_TYPE)ECX != 0 && (T0 & CC_Z))
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        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
352
}
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void OPPROTO glue(op_jz_ecx, SUFFIX)(void)
355
{
356
    if ((DATA_TYPE)ECX == 0)
357
        GOTO_LABEL_PARAM(1);
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    FORCE_RET();
359
}
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361
void OPPROTO glue(op_jnz_ecx, SUFFIX)(void)
362
{
363
    if ((DATA_TYPE)ECX != 0)
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        GOTO_LABEL_PARAM(1);
365
    FORCE_RET();
366
}
367

    
368
#endif
369

    
370
/* various optimized set cases */
371

    
372
void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void)
373
{
374
    target_long src1, src2;
375
    src1 = CC_DST + CC_SRC;
376
    src2 = CC_SRC;
377

    
378
    T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2);
379
}
380

    
381
void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void)
382
{
383
    T0 = ((DATA_TYPE)CC_DST == 0);
384
}
385

    
386
void OPPROTO glue(op_setbe_T0_sub, SUFFIX)(void)
387
{
388
    target_long src1, src2;
389
    src1 = CC_DST + CC_SRC;
390
    src2 = CC_SRC;
391

    
392
    T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2);
393
}
394

    
395
void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void)
396
{
397
    T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1;
398
}
399

    
400
void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void)
401
{
402
    target_long src1, src2;
403
    src1 = CC_DST + CC_SRC;
404
    src2 = CC_SRC;
405

    
406
    T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2);
407
}
408

    
409
void OPPROTO glue(op_setle_T0_sub, SUFFIX)(void)
410
{
411
    target_long src1, src2;
412
    src1 = CC_DST + CC_SRC;
413
    src2 = CC_SRC;
414

    
415
    T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2);
416
}
417

    
418
#undef MEM_WRITE
419
#include "ops_template_mem.h"
420

    
421
#define MEM_WRITE 0
422
#include "ops_template_mem.h"
423

    
424
#if !defined(CONFIG_USER_ONLY)
425
#define MEM_WRITE 1
426
#include "ops_template_mem.h"
427

    
428
#define MEM_WRITE 2
429
#include "ops_template_mem.h"
430
#endif
431

    
432
/* bit operations */
433
#if DATA_BITS >= 16
434

    
435
void OPPROTO glue(glue(op_bt, SUFFIX), _T0_T1_cc)(void)
436
{
437
    int count;
438
    count = T1 & SHIFT_MASK;
439
    CC_SRC = T0 >> count;
440
}
441

    
442
void OPPROTO glue(glue(op_bts, SUFFIX), _T0_T1_cc)(void)
443
{
444
    int count;
445
    count = T1 & SHIFT_MASK;
446
    T1 = T0 >> count;
447
    T0 |= (((target_long)1) << count);
448
}
449

    
450
void OPPROTO glue(glue(op_btr, SUFFIX), _T0_T1_cc)(void)
451
{
452
    int count;
453
    count = T1 & SHIFT_MASK;
454
    T1 = T0 >> count;
455
    T0 &= ~(((target_long)1) << count);
456
}
457

    
458
void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void)
459
{
460
    int count;
461
    count = T1 & SHIFT_MASK;
462
    T1 = T0 >> count;
463
    T0 ^= (((target_long)1) << count);
464
}
465

    
466
void OPPROTO glue(glue(op_add_bit, SUFFIX), _A0_T1)(void)
467
{
468
    A0 += ((DATA_STYPE)T1 >> (3 + SHIFT)) << SHIFT;
469
}
470

    
471
void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void)
472
{
473
    int count;
474
    target_long res;
475

    
476
    res = T0 & DATA_MASK;
477
    if (res != 0) {
478
        count = 0;
479
        while ((res & 1) == 0) {
480
            count++;
481
            res >>= 1;
482
        }
483
        T1 = count;
484
        CC_DST = 1; /* ZF = 0 */
485
    } else {
486
        CC_DST = 0; /* ZF = 1 */
487
    }
488
    FORCE_RET();
489
}
490

    
491
void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void)
492
{
493
    int count;
494
    target_long res;
495

    
496
    res = T0 & DATA_MASK;
497
    if (res != 0) {
498
        count = DATA_BITS - 1;
499
        while ((res & SIGN_MASK) == 0) {
500
            count--;
501
            res <<= 1;
502
        }
503
        T1 = count;
504
        CC_DST = 1; /* ZF = 0 */
505
    } else {
506
        CC_DST = 0; /* ZF = 1 */
507
    }
508
    FORCE_RET();
509
}
510

    
511
#endif
512

    
513
#if DATA_BITS == 32
514
void OPPROTO op_update_bt_cc(void)
515
{
516
    CC_SRC = T1;
517
}
518
#endif
519

    
520
/* string operations */
521

    
522
void OPPROTO glue(op_movl_T0_Dshift, SUFFIX)(void)
523
{
524
    T0 = DF << SHIFT;
525
}
526

    
527
#undef DATA_BITS
528
#undef SHIFT_MASK
529
#undef SHIFT1_MASK
530
#undef SIGN_MASK
531
#undef DATA_TYPE
532
#undef DATA_STYPE
533
#undef DATA_MASK
534
#undef SUFFIX