root / target-i386 / cc_helper.c @ 083b79c9
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/*
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* x86 condition code helpers
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include "cpu.h" |
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#include "helper.h" |
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|
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const uint8_t parity_table[256] = { |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
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}; |
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#define SHIFT 0 |
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#include "cc_helper_template.h" |
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#undef SHIFT
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#define SHIFT 1 |
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#include "cc_helper_template.h" |
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#undef SHIFT
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#define SHIFT 2 |
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#include "cc_helper_template.h" |
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#undef SHIFT
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#ifdef TARGET_X86_64
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#define SHIFT 3 |
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#include "cc_helper_template.h" |
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#undef SHIFT
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#endif
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static target_ulong compute_all_adcx(target_ulong dst, target_ulong src1,
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target_ulong src2) |
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{
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return (src1 & ~CC_C) | (dst * CC_C);
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} |
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static target_ulong compute_all_adox(target_ulong dst, target_ulong src1,
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target_ulong src2) |
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{
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return (src1 & ~CC_O) | (src2 * CC_O);
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} |
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static target_ulong compute_all_adcox(target_ulong dst, target_ulong src1,
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target_ulong src2) |
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{
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return (src1 & ~(CC_C | CC_O)) | (dst * CC_C) | (src2 * CC_O);
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} |
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target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1, |
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target_ulong src2, int op)
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{
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switch (op) {
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default: /* should never happen */ |
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return 0; |
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case CC_OP_EFLAGS:
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return src1;
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case CC_OP_CLR:
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return CC_Z;
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case CC_OP_MULB:
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return compute_all_mulb(dst, src1);
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case CC_OP_MULW:
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return compute_all_mulw(dst, src1);
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case CC_OP_MULL:
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return compute_all_mull(dst, src1);
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case CC_OP_ADDB:
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return compute_all_addb(dst, src1);
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case CC_OP_ADDW:
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return compute_all_addw(dst, src1);
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case CC_OP_ADDL:
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return compute_all_addl(dst, src1);
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case CC_OP_ADCB:
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return compute_all_adcb(dst, src1, src2);
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case CC_OP_ADCW:
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return compute_all_adcw(dst, src1, src2);
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case CC_OP_ADCL:
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return compute_all_adcl(dst, src1, src2);
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case CC_OP_SUBB:
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return compute_all_subb(dst, src1);
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case CC_OP_SUBW:
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return compute_all_subw(dst, src1);
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case CC_OP_SUBL:
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return compute_all_subl(dst, src1);
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case CC_OP_SBBB:
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return compute_all_sbbb(dst, src1, src2);
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case CC_OP_SBBW:
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return compute_all_sbbw(dst, src1, src2);
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case CC_OP_SBBL:
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return compute_all_sbbl(dst, src1, src2);
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case CC_OP_LOGICB:
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return compute_all_logicb(dst, src1);
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case CC_OP_LOGICW:
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return compute_all_logicw(dst, src1);
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case CC_OP_LOGICL:
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return compute_all_logicl(dst, src1);
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case CC_OP_INCB:
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return compute_all_incb(dst, src1);
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case CC_OP_INCW:
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return compute_all_incw(dst, src1);
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case CC_OP_INCL:
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return compute_all_incl(dst, src1);
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case CC_OP_DECB:
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return compute_all_decb(dst, src1);
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case CC_OP_DECW:
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return compute_all_decw(dst, src1);
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case CC_OP_DECL:
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return compute_all_decl(dst, src1);
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case CC_OP_SHLB:
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return compute_all_shlb(dst, src1);
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case CC_OP_SHLW:
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return compute_all_shlw(dst, src1);
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case CC_OP_SHLL:
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return compute_all_shll(dst, src1);
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case CC_OP_SARB:
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return compute_all_sarb(dst, src1);
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case CC_OP_SARW:
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return compute_all_sarw(dst, src1);
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case CC_OP_SARL:
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return compute_all_sarl(dst, src1);
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case CC_OP_BMILGB:
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return compute_all_bmilgb(dst, src1);
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case CC_OP_BMILGW:
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return compute_all_bmilgw(dst, src1);
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case CC_OP_BMILGL:
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return compute_all_bmilgl(dst, src1);
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case CC_OP_ADCX:
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return compute_all_adcx(dst, src1, src2);
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case CC_OP_ADOX:
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return compute_all_adox(dst, src1, src2);
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case CC_OP_ADCOX:
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return compute_all_adcox(dst, src1, src2);
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#ifdef TARGET_X86_64
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case CC_OP_MULQ:
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return compute_all_mulq(dst, src1);
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case CC_OP_ADDQ:
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return compute_all_addq(dst, src1);
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case CC_OP_ADCQ:
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return compute_all_adcq(dst, src1, src2);
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case CC_OP_SUBQ:
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return compute_all_subq(dst, src1);
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case CC_OP_SBBQ:
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return compute_all_sbbq(dst, src1, src2);
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case CC_OP_LOGICQ:
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return compute_all_logicq(dst, src1);
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case CC_OP_INCQ:
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return compute_all_incq(dst, src1);
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case CC_OP_DECQ:
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return compute_all_decq(dst, src1);
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case CC_OP_SHLQ:
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return compute_all_shlq(dst, src1);
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case CC_OP_SARQ:
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return compute_all_sarq(dst, src1);
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case CC_OP_BMILGQ:
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return compute_all_bmilgq(dst, src1);
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#endif
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} |
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} |
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uint32_t cpu_cc_compute_all(CPUX86State *env, int op)
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{
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return helper_cc_compute_all(CC_DST, CC_SRC, CC_SRC2, op);
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} |
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target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1, |
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target_ulong src2, int op)
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{
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switch (op) {
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default: /* should never happen */ |
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case CC_OP_LOGICB:
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case CC_OP_LOGICW:
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case CC_OP_LOGICL:
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case CC_OP_LOGICQ:
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case CC_OP_CLR:
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return 0; |
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case CC_OP_EFLAGS:
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case CC_OP_SARB:
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case CC_OP_SARW:
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case CC_OP_SARL:
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case CC_OP_SARQ:
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case CC_OP_ADOX:
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return src1 & 1; |
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case CC_OP_INCB:
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case CC_OP_INCW:
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case CC_OP_INCL:
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case CC_OP_INCQ:
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case CC_OP_DECB:
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case CC_OP_DECW:
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case CC_OP_DECL:
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case CC_OP_DECQ:
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return src1;
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case CC_OP_MULB:
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case CC_OP_MULW:
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case CC_OP_MULL:
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case CC_OP_MULQ:
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return src1 != 0; |
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|
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case CC_OP_ADCX:
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case CC_OP_ADCOX:
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return dst;
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case CC_OP_ADDB:
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return compute_c_addb(dst, src1);
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case CC_OP_ADDW:
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return compute_c_addw(dst, src1);
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case CC_OP_ADDL:
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return compute_c_addl(dst, src1);
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case CC_OP_ADCB:
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return compute_c_adcb(dst, src1, src2);
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case CC_OP_ADCW:
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return compute_c_adcw(dst, src1, src2);
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case CC_OP_ADCL:
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return compute_c_adcl(dst, src1, src2);
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case CC_OP_SUBB:
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return compute_c_subb(dst, src1);
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case CC_OP_SUBW:
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return compute_c_subw(dst, src1);
|
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case CC_OP_SUBL:
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return compute_c_subl(dst, src1);
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case CC_OP_SBBB:
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return compute_c_sbbb(dst, src1, src2);
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case CC_OP_SBBW:
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return compute_c_sbbw(dst, src1, src2);
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case CC_OP_SBBL:
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return compute_c_sbbl(dst, src1, src2);
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|
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case CC_OP_SHLB:
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return compute_c_shlb(dst, src1);
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case CC_OP_SHLW:
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return compute_c_shlw(dst, src1);
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case CC_OP_SHLL:
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return compute_c_shll(dst, src1);
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|
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case CC_OP_BMILGB:
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return compute_c_bmilgb(dst, src1);
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case CC_OP_BMILGW:
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return compute_c_bmilgw(dst, src1);
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case CC_OP_BMILGL:
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return compute_c_bmilgl(dst, src1);
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|
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#ifdef TARGET_X86_64
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case CC_OP_ADDQ:
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return compute_c_addq(dst, src1);
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case CC_OP_ADCQ:
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return compute_c_adcq(dst, src1, src2);
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case CC_OP_SUBQ:
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return compute_c_subq(dst, src1);
|
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case CC_OP_SBBQ:
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return compute_c_sbbq(dst, src1, src2);
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case CC_OP_SHLQ:
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return compute_c_shlq(dst, src1);
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case CC_OP_BMILGQ:
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return compute_c_bmilgq(dst, src1);
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#endif
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} |
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} |
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|
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void helper_write_eflags(CPUX86State *env, target_ulong t0,
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uint32_t update_mask) |
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{
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cpu_load_eflags(env, t0, update_mask); |
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} |
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|
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target_ulong helper_read_eflags(CPUX86State *env) |
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{
|
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uint32_t eflags; |
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|
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eflags = cpu_cc_compute_all(env, CC_OP); |
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eflags |= (env->df & DF_MASK); |
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eflags |= env->eflags & ~(VM_MASK | RF_MASK); |
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return eflags;
|
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} |
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|
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void helper_clts(CPUX86State *env)
|
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{
|
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env->cr[0] &= ~CR0_TS_MASK;
|
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env->hflags &= ~HF_TS_MASK; |
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} |
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|
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void helper_reset_rf(CPUX86State *env)
|
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{
|
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env->eflags &= ~RF_MASK; |
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} |
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|
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void helper_cli(CPUX86State *env)
|
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{
|
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env->eflags &= ~IF_MASK; |
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} |
| 354 |
|
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void helper_sti(CPUX86State *env)
|
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{
|
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env->eflags |= IF_MASK; |
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} |
| 359 |
|
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void helper_clac(CPUX86State *env)
|
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{
|
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env->eflags &= ~AC_MASK; |
| 363 |
} |
| 364 |
|
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void helper_stac(CPUX86State *env)
|
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{
|
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env->eflags |= AC_MASK; |
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} |
| 369 |
|
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#if 0
|
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/* vm86plus instructions */
|
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void helper_cli_vm(CPUX86State *env)
|
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{
|
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env->eflags &= ~VIF_MASK;
|
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}
|
| 376 |
|
| 377 |
void helper_sti_vm(CPUX86State *env)
|
| 378 |
{
|
| 379 |
env->eflags |= VIF_MASK;
|
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if (env->eflags & VIP_MASK) {
|
| 381 |
raise_exception(env, EXCP0D_GPF);
|
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}
|
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}
|
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#endif
|
| 385 |
|
| 386 |
void helper_set_inhibit_irq(CPUX86State *env)
|
| 387 |
{
|
| 388 |
env->hflags |= HF_INHIBIT_IRQ_MASK; |
| 389 |
} |
| 390 |
|
| 391 |
void helper_reset_inhibit_irq(CPUX86State *env)
|
| 392 |
{
|
| 393 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
| 394 |
} |