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b6abf97df1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4470 c046a42c-6fe2-441c-8c8c-71466251a162
120 lines
2.6 KiB
C
120 lines
2.6 KiB
C
/*
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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 MEM_WRITE == 0
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#if DATA_BITS == 8
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#define MEM_SUFFIX b_raw
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#elif DATA_BITS == 16
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#define MEM_SUFFIX w_raw
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#elif DATA_BITS == 32
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#define MEM_SUFFIX l_raw
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#elif DATA_BITS == 64
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#define MEM_SUFFIX q_raw
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#endif
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#elif MEM_WRITE == 1
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#if DATA_BITS == 8
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#define MEM_SUFFIX b_kernel
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#elif DATA_BITS == 16
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#define MEM_SUFFIX w_kernel
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#elif DATA_BITS == 32
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#define MEM_SUFFIX l_kernel
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#elif DATA_BITS == 64
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#define MEM_SUFFIX q_kernel
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#endif
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#elif MEM_WRITE == 2
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#if DATA_BITS == 8
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#define MEM_SUFFIX b_user
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#elif DATA_BITS == 16
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#define MEM_SUFFIX w_user
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#elif DATA_BITS == 32
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#define MEM_SUFFIX l_user
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#elif DATA_BITS == 64
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#define MEM_SUFFIX q_user
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#endif
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#else
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#error invalid MEM_WRITE
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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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/* 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, MEM_SUFFIX)(A0, T0);
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#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 * 4;
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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, MEM_SUFFIX)(A0, T0);
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#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 * 4;
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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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target_ulong src, dst;
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src = T0;
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dst = EAX - T0;
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if ((DATA_TYPE)dst == 0) {
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T0 = T1;
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#ifdef MEM_WRITE
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glue(st, MEM_SUFFIX)(A0, T0);
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#endif
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} else {
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EAX = (EAX & ~DATA_MASK) | (T0 & DATA_MASK);
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}
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CC_SRC = src;
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CC_DST = dst;
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FORCE_RET();
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}
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#undef MEM_SUFFIX
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#undef MEM_WRITE
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