root / target-i386 / ops_template_mem.h @ 2c0262af
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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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#ifdef MEM_WRITE
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#if DATA_BITS == 8 |
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#define MEM_SUFFIX b_mem
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#elif DATA_BITS == 16 |
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#define MEM_SUFFIX w_mem
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#elif DATA_BITS == 32 |
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#define MEM_SUFFIX l_mem
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#endif
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#else
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#define MEM_SUFFIX SUFFIX
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#endif
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void OPPROTO glue(glue(op_rol, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, src;
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count = T1 & SHIFT_MASK; |
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if (count) {
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src = T0; |
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T0 &= DATA_MASK; |
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T0 = (T0 << count) | (T0 >> (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#else
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/* gcc 3.2 workaround. This is really a bug in gcc. */
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asm volatile("" : : "r" (T0)); |
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#endif
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CC_SRC = (cc_table[CC_OP].compute_all() & ~(CC_O | CC_C)) | |
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(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
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(T0 & CC_C); |
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CC_OP = CC_OP_EFLAGS; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_ror, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, src;
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count = T1 & SHIFT_MASK; |
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if (count) {
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src = T0; |
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T0 &= DATA_MASK; |
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T0 = (T0 >> count) | (T0 << (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#else
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/* gcc 3.2 workaround. This is really a bug in gcc. */
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asm volatile("" : : "r" (T0)); |
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#endif
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CC_SRC = (cc_table[CC_OP].compute_all() & ~(CC_O | CC_C)) | |
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(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
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((T0 >> (DATA_BITS - 1)) & CC_C);
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CC_OP = CC_OP_EFLAGS; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_rol, MEM_SUFFIX), _T0_T1)(void) |
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{
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int count;
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count = T1 & SHIFT_MASK; |
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if (count) {
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T0 &= DATA_MASK; |
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T0 = (T0 << count) | (T0 >> (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_ror, MEM_SUFFIX), _T0_T1)(void) |
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{
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int count;
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count = T1 & SHIFT_MASK; |
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if (count) {
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T0 &= DATA_MASK; |
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T0 = (T0 >> count) | (T0 << (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_rcl, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, res, eflags;
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unsigned int src; |
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count = T1 & 0x1f;
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#if DATA_BITS == 16 |
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count = rclw_table[count]; |
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#elif DATA_BITS == 8 |
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count = rclb_table[count]; |
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#endif
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if (count) {
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eflags = cc_table[CC_OP].compute_all(); |
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T0 &= DATA_MASK; |
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src = T0; |
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res = (T0 << count) | ((eflags & CC_C) << (count - 1));
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if (count > 1) |
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res |= T0 >> (DATA_BITS + 1 - count);
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T0 = res; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = (eflags & ~(CC_C | CC_O)) | |
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(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
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((src >> (DATA_BITS - count)) & CC_C); |
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CC_OP = CC_OP_EFLAGS; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_rcr, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, res, eflags;
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unsigned int src; |
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count = T1 & 0x1f;
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#if DATA_BITS == 16 |
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count = rclw_table[count]; |
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#elif DATA_BITS == 8 |
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count = rclb_table[count]; |
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#endif
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if (count) {
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eflags = cc_table[CC_OP].compute_all(); |
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T0 &= DATA_MASK; |
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src = T0; |
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res = (T0 >> count) | ((eflags & CC_C) << (DATA_BITS - count)); |
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if (count > 1) |
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res |= T0 << (DATA_BITS + 1 - count);
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T0 = res; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = (eflags & ~(CC_C | CC_O)) | |
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(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
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((src >> (count - 1)) & CC_C);
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CC_OP = CC_OP_EFLAGS; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_shl, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, src;
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count = T1 & 0x1f;
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if (count) {
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src = (DATA_TYPE)T0 << (count - 1);
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T0 = T0 << count; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = src; |
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CC_DST = T0; |
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CC_OP = CC_OP_SHLB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_shr, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, src;
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count = T1 & 0x1f;
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if (count) {
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T0 &= DATA_MASK; |
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src = T0 >> (count - 1);
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T0 = T0 >> count; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = src; |
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CC_DST = T0; |
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CC_OP = CC_OP_SARB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_sar, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int count, src;
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count = T1 & 0x1f;
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if (count) {
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src = (DATA_STYPE)T0; |
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T0 = src >> count; |
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src = src >> (count - 1);
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = src; |
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CC_DST = T0; |
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CC_OP = CC_OP_SARB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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#if DATA_BITS == 16 |
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/* XXX: overflow flag might be incorrect in some cases in shldw */
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void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_im_cc)(void) |
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{
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int count;
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unsigned int res, tmp; |
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count = PARAM1; |
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T1 &= 0xffff;
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res = T1 | (T0 << 16);
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tmp = res >> (32 - count);
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res <<= count; |
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if (count > 16) |
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res |= T1 << (count - 16);
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T0 = res >> 16;
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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} |
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void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
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{
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int count;
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unsigned int res, tmp; |
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count = ECX & 0x1f;
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if (count) {
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T1 &= 0xffff;
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res = T1 | (T0 << 16);
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tmp = res >> (32 - count);
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res <<= count; |
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if (count > 16) |
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res |= T1 << (count - 16);
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T0 = res >> 16;
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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CC_OP = CC_OP_SARB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_im_cc)(void) |
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{
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int count;
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unsigned int res, tmp; |
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count = PARAM1; |
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res = (T0 & 0xffff) | (T1 << 16); |
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tmp = res >> (count - 1);
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res >>= count; |
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if (count > 16) |
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res |= T1 << (32 - count);
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T0 = res; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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} |
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void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
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{
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int count;
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unsigned int res, tmp; |
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count = ECX & 0x1f;
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if (count) {
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res = (T0 & 0xffff) | (T1 << 16); |
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tmp = res >> (count - 1);
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res >>= count; |
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if (count > 16) |
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res |= T1 << (32 - count);
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T0 = res; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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CC_OP = CC_OP_SARB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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#endif
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#if DATA_BITS == 32 |
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void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_im_cc)(void) |
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{
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int count, tmp;
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count = PARAM1; |
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T0 &= DATA_MASK; |
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T1 &= DATA_MASK; |
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tmp = T0 << (count - 1);
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T0 = (T0 << count) | (T1 >> (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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} |
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void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
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{
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int count, tmp;
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count = ECX & 0x1f;
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if (count) {
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T0 &= DATA_MASK; |
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T1 &= DATA_MASK; |
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tmp = T0 << (count - 1);
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T0 = (T0 << count) | (T1 >> (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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CC_OP = CC_OP_SHLB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_im_cc)(void) |
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{
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int count, tmp;
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count = PARAM1; |
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T0 &= DATA_MASK; |
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T1 &= DATA_MASK; |
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tmp = T0 >> (count - 1);
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T0 = (T0 >> count) | (T1 << (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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} |
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void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
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{
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int count, tmp;
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count = ECX & 0x1f;
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if (count) {
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T0 &= DATA_MASK; |
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T1 &= DATA_MASK; |
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tmp = T0 >> (count - 1);
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T0 = (T0 >> count) | (T1 << (DATA_BITS - count)); |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
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#endif
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CC_SRC = tmp; |
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CC_DST = T0; |
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CC_OP = CC_OP_SARB + SHIFT; |
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} |
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FORCE_RET(); |
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} |
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#endif
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/* carry add/sub (we only need to set CC_OP differently) */
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void OPPROTO glue(glue(op_adc, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int cf;
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cf = cc_table[CC_OP].compute_c(); |
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T0 = T0 + T1 + cf; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
| 390 |
#endif
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CC_SRC = T1; |
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CC_DST = T0; |
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CC_OP = CC_OP_ADDB + SHIFT + cf * 3;
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} |
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void OPPROTO glue(glue(op_sbb, MEM_SUFFIX), _T0_T1_cc)(void) |
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{
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int cf;
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cf = cc_table[CC_OP].compute_c(); |
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T0 = T0 - T1 - cf; |
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#ifdef MEM_WRITE
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glue(st, SUFFIX)((uint8_t *)A0, T0); |
| 403 |
#endif
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CC_SRC = T1; |
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CC_DST = T0; |
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CC_OP = CC_OP_SUBB + SHIFT + cf * 3;
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} |
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void OPPROTO glue(glue(op_cmpxchg, MEM_SUFFIX), _T0_T1_EAX_cc)(void) |
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{
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| 411 |
unsigned int src, dst; |
| 412 |
|
| 413 |
src = T0; |
| 414 |
dst = EAX - T0; |
| 415 |
if ((DATA_TYPE)dst == 0) { |
| 416 |
T0 = T1; |
| 417 |
} else {
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| 418 |
EAX = (EAX & ~DATA_MASK) | (T0 & DATA_MASK); |
| 419 |
} |
| 420 |
#ifdef MEM_WRITE
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| 421 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
| 422 |
#endif
|
| 423 |
CC_SRC = src; |
| 424 |
CC_DST = dst; |
| 425 |
FORCE_RET(); |
| 426 |
} |
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|
| 428 |
#undef MEM_SUFFIX
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#undef MEM_WRITE
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