root / target-i386 / ops_template.h @ 50d3eeae
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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) |
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{ |
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int cf, pf, af, zf, sf, of;
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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(); |
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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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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) |
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{ |
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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_jbe_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(); |
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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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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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{ |
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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_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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void OPPROTO glue(op_jle_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_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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#if DATA_BITS >= 16 |
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void OPPROTO glue(op_loopnz, SUFFIX)(void) |
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{ |
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if ((DATA_TYPE)ECX != 0 && !(T0 & CC_Z)) |
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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_loopz, SUFFIX)(void) |
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{ |
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if ((DATA_TYPE)ECX != 0 && (T0 & CC_Z)) |
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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_jz_ecx, SUFFIX)(void) |
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{ |
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if ((DATA_TYPE)ECX == 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_ecx, SUFFIX)(void) |
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{ |
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if ((DATA_TYPE)ECX != 0) |
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GOTO_LABEL_PARAM(1);
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FORCE_RET(); |
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} |
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#endif
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/* various optimized set cases */
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void OPPROTO glue(op_setb_T0_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; |
377 |
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T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2); |
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} |
380 |
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void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void) |
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{ |
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T0 = ((DATA_TYPE)CC_DST == 0);
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} |
385 |
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void OPPROTO glue(op_setbe_T0_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; |
391 |
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T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2); |
393 |
} |
394 |
|
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void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void) |
396 |
{ |
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T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1; |
398 |
} |
399 |
|
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void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void) |
401 |
{ |
402 |
target_long src1, src2; |
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src1 = CC_DST + CC_SRC; |
404 |
src2 = CC_SRC; |
405 |
|
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T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2); |
407 |
} |
408 |
|
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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 |
|
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T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2); |
416 |
} |
417 |
|
418 |
/* shifts */
|
419 |
|
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void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1)(void) |
421 |
{ |
422 |
int count;
|
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count = T1 & SHIFT1_MASK; |
424 |
T0 = T0 << count; |
425 |
FORCE_RET(); |
426 |
} |
427 |
|
428 |
void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1)(void) |
429 |
{ |
430 |
int count;
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count = T1 & SHIFT1_MASK; |
432 |
T0 &= DATA_MASK; |
433 |
T0 = T0 >> count; |
434 |
FORCE_RET(); |
435 |
} |
436 |
|
437 |
void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1)(void) |
438 |
{ |
439 |
int count;
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440 |
target_long src; |
441 |
|
442 |
count = T1 & SHIFT1_MASK; |
443 |
src = (DATA_STYPE)T0; |
444 |
T0 = src >> count; |
445 |
FORCE_RET(); |
446 |
} |
447 |
|
448 |
#undef MEM_WRITE
|
449 |
#include "ops_template_mem.h" |
450 |
|
451 |
#define MEM_WRITE 0 |
452 |
#include "ops_template_mem.h" |
453 |
|
454 |
#if !defined(CONFIG_USER_ONLY)
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455 |
#define MEM_WRITE 1 |
456 |
#include "ops_template_mem.h" |
457 |
|
458 |
#define MEM_WRITE 2 |
459 |
#include "ops_template_mem.h" |
460 |
#endif
|
461 |
|
462 |
/* bit operations */
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#if DATA_BITS >= 16 |
464 |
|
465 |
void OPPROTO glue(glue(op_bt, SUFFIX), _T0_T1_cc)(void) |
466 |
{ |
467 |
int count;
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count = T1 & SHIFT_MASK; |
469 |
CC_SRC = T0 >> count; |
470 |
} |
471 |
|
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void OPPROTO glue(glue(op_bts, SUFFIX), _T0_T1_cc)(void) |
473 |
{ |
474 |
int count;
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count = T1 & SHIFT_MASK; |
476 |
T1 = T0 >> count; |
477 |
T0 |= (((target_long)1) << count);
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478 |
} |
479 |
|
480 |
void OPPROTO glue(glue(op_btr, SUFFIX), _T0_T1_cc)(void) |
481 |
{ |
482 |
int count;
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483 |
count = T1 & SHIFT_MASK; |
484 |
T1 = T0 >> count; |
485 |
T0 &= ~(((target_long)1) << count);
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} |
487 |
|
488 |
void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void) |
489 |
{ |
490 |
int count;
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count = T1 & SHIFT_MASK; |
492 |
T1 = T0 >> count; |
493 |
T0 ^= (((target_long)1) << count);
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} |
495 |
|
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void OPPROTO glue(glue(op_add_bit, SUFFIX), _A0_T1)(void) |
497 |
{ |
498 |
A0 += ((DATA_STYPE)T1 >> (3 + SHIFT)) << SHIFT;
|
499 |
} |
500 |
|
501 |
void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void) |
502 |
{ |
503 |
int count;
|
504 |
target_long res; |
505 |
|
506 |
res = T0 & DATA_MASK; |
507 |
if (res != 0) { |
508 |
count = 0;
|
509 |
while ((res & 1) == 0) { |
510 |
count++; |
511 |
res >>= 1;
|
512 |
} |
513 |
T1 = count; |
514 |
CC_DST = 1; /* ZF = 0 */ |
515 |
} else {
|
516 |
CC_DST = 0; /* ZF = 1 */ |
517 |
} |
518 |
FORCE_RET(); |
519 |
} |
520 |
|
521 |
void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void) |
522 |
{ |
523 |
int count;
|
524 |
target_long res; |
525 |
|
526 |
res = T0 & DATA_MASK; |
527 |
if (res != 0) { |
528 |
count = DATA_BITS - 1;
|
529 |
while ((res & SIGN_MASK) == 0) { |
530 |
count--; |
531 |
res <<= 1;
|
532 |
} |
533 |
T1 = count; |
534 |
CC_DST = 1; /* ZF = 0 */ |
535 |
} else {
|
536 |
CC_DST = 0; /* ZF = 1 */ |
537 |
} |
538 |
FORCE_RET(); |
539 |
} |
540 |
|
541 |
#endif
|
542 |
|
543 |
#if DATA_BITS == 32 |
544 |
void OPPROTO op_update_bt_cc(void) |
545 |
{ |
546 |
CC_SRC = T1; |
547 |
} |
548 |
#endif
|
549 |
|
550 |
/* string operations */
|
551 |
|
552 |
void OPPROTO glue(op_movl_T0_Dshift, SUFFIX)(void) |
553 |
{ |
554 |
T0 = DF << SHIFT; |
555 |
} |
556 |
|
557 |
/* port I/O */
|
558 |
#if DATA_BITS <= 32 |
559 |
void OPPROTO glue(glue(op_out, SUFFIX), _T0_T1)(void) |
560 |
{ |
561 |
glue(cpu_out, SUFFIX)(env, T0, T1 & DATA_MASK); |
562 |
} |
563 |
|
564 |
void OPPROTO glue(glue(op_in, SUFFIX), _T0_T1)(void) |
565 |
{ |
566 |
T1 = glue(cpu_in, SUFFIX)(env, T0); |
567 |
} |
568 |
|
569 |
void OPPROTO glue(glue(op_in, SUFFIX), _DX_T0)(void) |
570 |
{ |
571 |
T0 = glue(cpu_in, SUFFIX)(env, EDX & 0xffff);
|
572 |
} |
573 |
|
574 |
void OPPROTO glue(glue(op_out, SUFFIX), _DX_T0)(void) |
575 |
{ |
576 |
glue(cpu_out, SUFFIX)(env, EDX & 0xffff, T0);
|
577 |
} |
578 |
|
579 |
void OPPROTO glue(glue(op_check_io, SUFFIX), _T0)(void) |
580 |
{ |
581 |
glue(glue(check_io, SUFFIX), _T0)(); |
582 |
} |
583 |
|
584 |
void OPPROTO glue(glue(op_check_io, SUFFIX), _DX)(void) |
585 |
{ |
586 |
glue(glue(check_io, SUFFIX), _DX)(); |
587 |
} |
588 |
#endif
|
589 |
|
590 |
#undef DATA_BITS
|
591 |
#undef SHIFT_MASK
|
592 |
#undef SHIFT1_MASK
|
593 |
#undef SIGN_MASK
|
594 |
#undef DATA_TYPE
|
595 |
#undef DATA_STYPE
|
596 |
#undef DATA_MASK
|
597 |
#undef SUFFIX
|