388 lines
8.4 KiB
C
388 lines
8.4 KiB
C
/*
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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 "dyngen-exec.h"
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#include "helper.h"
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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 int compute_all_eflags(void)
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{
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return CC_SRC;
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}
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static int compute_c_eflags(void)
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{
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return CC_SRC & CC_C;
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}
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uint32_t helper_cc_compute_all(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 compute_all_eflags();
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case CC_OP_MULB:
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return compute_all_mulb();
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case CC_OP_MULW:
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return compute_all_mulw();
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case CC_OP_MULL:
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return compute_all_mull();
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case CC_OP_ADDB:
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return compute_all_addb();
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case CC_OP_ADDW:
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return compute_all_addw();
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case CC_OP_ADDL:
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return compute_all_addl();
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case CC_OP_ADCB:
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return compute_all_adcb();
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case CC_OP_ADCW:
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return compute_all_adcw();
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case CC_OP_ADCL:
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return compute_all_adcl();
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case CC_OP_SUBB:
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return compute_all_subb();
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case CC_OP_SUBW:
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return compute_all_subw();
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case CC_OP_SUBL:
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return compute_all_subl();
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case CC_OP_SBBB:
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return compute_all_sbbb();
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case CC_OP_SBBW:
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return compute_all_sbbw();
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case CC_OP_SBBL:
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return compute_all_sbbl();
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case CC_OP_LOGICB:
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return compute_all_logicb();
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case CC_OP_LOGICW:
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return compute_all_logicw();
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case CC_OP_LOGICL:
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return compute_all_logicl();
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case CC_OP_INCB:
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return compute_all_incb();
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case CC_OP_INCW:
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return compute_all_incw();
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case CC_OP_INCL:
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return compute_all_incl();
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case CC_OP_DECB:
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return compute_all_decb();
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case CC_OP_DECW:
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return compute_all_decw();
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case CC_OP_DECL:
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return compute_all_decl();
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case CC_OP_SHLB:
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return compute_all_shlb();
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case CC_OP_SHLW:
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return compute_all_shlw();
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case CC_OP_SHLL:
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return compute_all_shll();
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case CC_OP_SARB:
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return compute_all_sarb();
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case CC_OP_SARW:
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return compute_all_sarw();
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case CC_OP_SARL:
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return compute_all_sarl();
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#ifdef TARGET_X86_64
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case CC_OP_MULQ:
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return compute_all_mulq();
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case CC_OP_ADDQ:
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return compute_all_addq();
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case CC_OP_ADCQ:
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return compute_all_adcq();
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case CC_OP_SUBQ:
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return compute_all_subq();
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case CC_OP_SBBQ:
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return compute_all_sbbq();
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case CC_OP_LOGICQ:
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return compute_all_logicq();
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case CC_OP_INCQ:
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return compute_all_incq();
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case CC_OP_DECQ:
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return compute_all_decq();
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case CC_OP_SHLQ:
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return compute_all_shlq();
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case CC_OP_SARQ:
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return compute_all_sarq();
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#endif
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}
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}
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uint32_t cpu_cc_compute_all(CPUX86State *env1, int op)
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{
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CPUX86State *saved_env;
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uint32_t ret;
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saved_env = env;
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env = env1;
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ret = helper_cc_compute_all(op);
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env = saved_env;
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return ret;
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}
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uint32_t helper_cc_compute_c(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 compute_c_eflags();
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case CC_OP_MULB:
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return compute_c_mull();
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case CC_OP_MULW:
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return compute_c_mull();
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case CC_OP_MULL:
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return compute_c_mull();
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case CC_OP_ADDB:
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return compute_c_addb();
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case CC_OP_ADDW:
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return compute_c_addw();
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case CC_OP_ADDL:
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return compute_c_addl();
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case CC_OP_ADCB:
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return compute_c_adcb();
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case CC_OP_ADCW:
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return compute_c_adcw();
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case CC_OP_ADCL:
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return compute_c_adcl();
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case CC_OP_SUBB:
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return compute_c_subb();
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case CC_OP_SUBW:
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return compute_c_subw();
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case CC_OP_SUBL:
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return compute_c_subl();
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case CC_OP_SBBB:
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return compute_c_sbbb();
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case CC_OP_SBBW:
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return compute_c_sbbw();
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case CC_OP_SBBL:
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return compute_c_sbbl();
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case CC_OP_LOGICB:
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return compute_c_logicb();
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case CC_OP_LOGICW:
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return compute_c_logicw();
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case CC_OP_LOGICL:
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return compute_c_logicl();
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case CC_OP_INCB:
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return compute_c_incl();
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case CC_OP_INCW:
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return compute_c_incl();
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case CC_OP_INCL:
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return compute_c_incl();
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case CC_OP_DECB:
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return compute_c_incl();
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case CC_OP_DECW:
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return compute_c_incl();
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case CC_OP_DECL:
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return compute_c_incl();
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case CC_OP_SHLB:
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return compute_c_shlb();
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case CC_OP_SHLW:
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return compute_c_shlw();
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case CC_OP_SHLL:
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return compute_c_shll();
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case CC_OP_SARB:
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return compute_c_sarl();
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case CC_OP_SARW:
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return compute_c_sarl();
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case CC_OP_SARL:
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return compute_c_sarl();
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#ifdef TARGET_X86_64
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case CC_OP_MULQ:
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return compute_c_mull();
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case CC_OP_ADDQ:
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return compute_c_addq();
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case CC_OP_ADCQ:
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return compute_c_adcq();
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case CC_OP_SUBQ:
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return compute_c_subq();
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case CC_OP_SBBQ:
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return compute_c_sbbq();
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case CC_OP_LOGICQ:
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return compute_c_logicq();
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case CC_OP_INCQ:
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return compute_c_incl();
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case CC_OP_DECQ:
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return compute_c_incl();
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case CC_OP_SHLQ:
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return compute_c_shlq();
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case CC_OP_SARQ:
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return compute_c_sarl();
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#endif
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}
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}
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void helper_write_eflags(target_ulong t0, 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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target_ulong helper_read_eflags(void)
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{
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uint32_t eflags;
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eflags = helper_cc_compute_all(CC_OP);
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eflags |= (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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void helper_clts(void)
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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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void helper_reset_rf(void)
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{
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env->eflags &= ~RF_MASK;
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}
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void helper_cli(void)
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{
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env->eflags &= ~IF_MASK;
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}
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void helper_sti(void)
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{
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env->eflags |= IF_MASK;
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}
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#if 0
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/* vm86plus instructions */
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void helper_cli_vm(void)
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{
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env->eflags &= ~VIF_MASK;
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}
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void helper_sti_vm(void)
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{
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env->eflags |= VIF_MASK;
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if (env->eflags & VIP_MASK) {
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raise_exception(env, EXCP0D_GPF);
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}
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}
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#endif
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void helper_set_inhibit_irq(void)
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{
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env->hflags |= HF_INHIBIT_IRQ_MASK;
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}
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void helper_reset_inhibit_irq(void)
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{
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env->hflags &= ~HF_INHIBIT_IRQ_MASK;
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}
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