657 lines
10 KiB
C
657 lines
10 KiB
C
/*
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* MIPS emulation micro-operations for qemu.
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*
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* Copyright (c) 2004-2005 Jocelyn Mayer
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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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#include "config.h"
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#include "exec.h"
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#ifndef CALL_FROM_TB0
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#define CALL_FROM_TB0(func) func();
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#endif
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#ifndef CALL_FROM_TB1
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#define CALL_FROM_TB1(func, arg0) func(arg0);
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#endif
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#ifndef CALL_FROM_TB1_CONST16
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#define CALL_FROM_TB1_CONST16(func, arg0) CALL_FROM_TB1(func, arg0);
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#endif
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#ifndef CALL_FROM_TB2
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#define CALL_FROM_TB2(func, arg0, arg1) func(arg0, arg1);
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#endif
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#ifndef CALL_FROM_TB2_CONST16
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#define CALL_FROM_TB2_CONST16(func, arg0, arg1) \
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CALL_FROM_TB2(func, arg0, arg1);
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#endif
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#ifndef CALL_FROM_TB3
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#define CALL_FROM_TB3(func, arg0, arg1, arg2) func(arg0, arg1, arg2);
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#endif
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#ifndef CALL_FROM_TB4
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#define CALL_FROM_TB4(func, arg0, arg1, arg2, arg3) \
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func(arg0, arg1, arg2, arg3);
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#endif
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#define REG 1
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#include "op_template.c"
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#undef REG
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#define REG 2
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#include "op_template.c"
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#undef REG
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#define REG 3
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#include "op_template.c"
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#undef REG
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#define REG 4
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#include "op_template.c"
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#undef REG
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#define REG 5
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#include "op_template.c"
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#undef REG
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#define REG 6
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#include "op_template.c"
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#undef REG
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#define REG 7
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#include "op_template.c"
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#undef REG
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#define REG 8
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#include "op_template.c"
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#undef REG
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#define REG 9
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#include "op_template.c"
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#undef REG
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#define REG 10
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#include "op_template.c"
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#undef REG
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#define REG 11
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#include "op_template.c"
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#undef REG
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#define REG 12
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#include "op_template.c"
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#undef REG
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#define REG 13
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#include "op_template.c"
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#undef REG
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#define REG 14
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#include "op_template.c"
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#undef REG
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#define REG 15
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#include "op_template.c"
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#undef REG
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#define REG 16
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#include "op_template.c"
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#undef REG
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#define REG 17
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#include "op_template.c"
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#undef REG
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#define REG 18
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#include "op_template.c"
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#undef REG
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#define REG 19
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#include "op_template.c"
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#undef REG
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#define REG 20
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#include "op_template.c"
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#undef REG
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#define REG 21
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#include "op_template.c"
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#undef REG
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#define REG 22
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#include "op_template.c"
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#undef REG
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#define REG 23
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#include "op_template.c"
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#undef REG
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#define REG 24
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#include "op_template.c"
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#undef REG
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#define REG 25
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#include "op_template.c"
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#undef REG
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#define REG 26
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#include "op_template.c"
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#undef REG
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#define REG 27
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#include "op_template.c"
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#undef REG
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#define REG 28
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#include "op_template.c"
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#undef REG
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#define REG 29
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#include "op_template.c"
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#undef REG
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#define REG 30
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#include "op_template.c"
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#undef REG
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#define REG 31
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#include "op_template.c"
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#undef REG
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#define TN T0
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#include "op_template.c"
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#undef TN
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#define TN T1
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#include "op_template.c"
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#undef TN
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#define TN T2
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#include "op_template.c"
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#undef TN
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void op_dup_T0 (void)
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{
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T2 = T0;
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RETURN();
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}
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void op_load_HI (void)
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{
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T0 = env->HI;
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RETURN();
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}
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void op_store_HI (void)
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{
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env->HI = T0;
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RETURN();
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}
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void op_load_LO (void)
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{
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T0 = env->LO;
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RETURN();
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}
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void op_store_LO (void)
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{
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env->LO = T0;
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RETURN();
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}
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/* Load and store */
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#define MEMSUFFIX _raw
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#include "op_mem.c"
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#undef MEMSUFFIX
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#if !defined(CONFIG_USER_ONLY)
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#define MEMSUFFIX _user
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#include "op_mem.c"
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#undef MEMSUFFIX
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#define MEMSUFFIX _kernel
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#include "op_mem.c"
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#undef MEMSUFFIX
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#endif
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/* Arithmetic */
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void op_add (void)
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{
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T0 += T1;
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RETURN();
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}
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void op_addo (void)
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{
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target_ulong tmp;
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tmp = T0;
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T0 += T1;
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if ((T0 >> 31) ^ (T1 >> 31) ^ (tmp >> 31)) {
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CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
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}
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RETURN();
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}
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void op_sub (void)
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{
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T0 -= T1;
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RETURN();
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}
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void op_subo (void)
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{
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target_ulong tmp;
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tmp = T0;
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T0 = (int32_t)T0 - (int32_t)T1;
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if (!((T0 >> 31) ^ (T1 >> 31) ^ (tmp >> 31))) {
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CALL_FROM_TB1(do_raise_exception, EXCP_OVERFLOW);
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}
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RETURN();
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}
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void op_mul (void)
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{
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T0 = (int32_t)T0 * (int32_t)T1;
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RETURN();
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}
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void op_div (void)
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{
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if (T1 != 0) {
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env->LO = (int32_t)T0 / (int32_t)T1;
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env->HI = (int32_t)T0 % (int32_t)T1;
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}
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RETURN();
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}
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void op_divu (void)
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{
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if (T1 != 0) {
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env->LO = T0 / T1;
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env->HI = T0 % T1;
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}
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RETURN();
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}
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/* Logical */
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void op_and (void)
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{
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T0 &= T1;
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RETURN();
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}
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void op_nor (void)
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{
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T0 = ~(T0 | T1);
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RETURN();
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}
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void op_or (void)
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{
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T0 |= T1;
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RETURN();
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}
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void op_xor (void)
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{
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T0 ^= T1;
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RETURN();
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}
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void op_sll (void)
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{
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T0 = T0 << T1;
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RETURN();
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}
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void op_sra (void)
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{
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T0 = (int32_t)T0 >> T1;
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RETURN();
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}
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void op_srl (void)
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{
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T0 = T0 >> T1;
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RETURN();
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}
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void op_sllv (void)
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{
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T0 = T1 << (T0 & 0x1F);
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RETURN();
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}
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void op_srav (void)
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{
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T0 = (int32_t)T1 >> (T0 & 0x1F);
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RETURN();
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}
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void op_srlv (void)
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{
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T0 = T1 >> (T0 & 0x1F);
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RETURN();
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}
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void op_clo (void)
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{
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int n;
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if (T0 == (target_ulong)-1) {
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T0 = 32;
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} else {
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for (n = 0; n < 32; n++) {
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if (!(T0 & (1 << 31)))
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break;
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T0 = T0 << 1;
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}
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T0 = n;
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}
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RETURN();
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}
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void op_clz (void)
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{
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int n;
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if (T0 == 0) {
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T0 = 32;
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} else {
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for (n = 0; n < 32; n++) {
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if (T0 & (1 << 31))
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break;
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T0 = T0 << 1;
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}
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T0 = n;
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}
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RETURN();
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}
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/* 64 bits arithmetic */
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#if (HOST_LONG_BITS == 64)
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static inline uint64_t get_HILO (void)
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{
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return ((uint64_t)env->HI << 32) | (uint64_t)env->LO;
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}
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static inline void set_HILO (uint64_t HILO)
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{
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env->LO = HILO & 0xFFFFFFFF;
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env->HI = HILO >> 32;
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}
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void op_mult (void)
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{
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set_HILO((int64_t)T0 * (int64_t)T1);
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RETURN();
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}
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void op_multu (void)
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{
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set_HILO((uint64_t)T0 * (uint64_t)T1);
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RETURN();
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}
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void op_madd (void)
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{
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int64_t tmp;
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tmp = ((int64_t)T0 * (int64_t)T1);
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set_HILO((int64_t)get_HILO() + tmp);
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RETURN();
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}
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void op_maddu (void)
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{
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uint64_t tmp;
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tmp = ((uint64_t)T0 * (uint64_t)T1);
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set_HILO(get_HILO() + tmp);
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RETURN();
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}
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void op_msub (void)
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{
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int64_t tmp;
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tmp = ((int64_t)T0 * (int64_t)T1);
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set_HILO((int64_t)get_HILO() - tmp);
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RETURN();
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}
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void op_msubu (void)
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{
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uint64_t tmp;
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tmp = ((uint64_t)T0 * (uint64_t)T1);
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set_HILO(get_HILO() - tmp);
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RETURN();
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}
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#else
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void op_mult (void)
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{
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CALL_FROM_TB0(do_mult);
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RETURN();
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}
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void op_multu (void)
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{
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CALL_FROM_TB0(do_multu);
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RETURN();
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}
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void op_madd (void)
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{
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CALL_FROM_TB0(do_madd);
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RETURN();
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}
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void op_maddu (void)
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{
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CALL_FROM_TB0(do_maddu);
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RETURN();
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}
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void op_msub (void)
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{
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CALL_FROM_TB0(do_msub);
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RETURN();
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}
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void op_msubu (void)
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{
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CALL_FROM_TB0(do_msubu);
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RETURN();
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}
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#endif
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/* Conditional moves */
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void op_movn (void)
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{
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if (T1 != 0)
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env->gpr[PARAM1] = T0;
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RETURN();
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}
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void op_movz (void)
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{
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if (T1 == 0)
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env->gpr[PARAM1] = T0;
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RETURN();
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}
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/* Tests */
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#define OP_COND(name, cond) \
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void glue(op_, name) (void) \
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{ \
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if (cond) { \
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T0 = 1; \
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} else { \
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T0 = 0; \
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} \
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RETURN(); \
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}
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OP_COND(eq, T0 == T1);
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OP_COND(ne, T0 != T1);
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OP_COND(ge, (int32_t)T0 >= (int32_t)T1);
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OP_COND(geu, T0 >= T1);
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OP_COND(lt, (int32_t)T0 < (int32_t)T1);
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OP_COND(ltu, T0 < T1);
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OP_COND(gez, (int32_t)T0 >= 0);
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OP_COND(gtz, (int32_t)T0 > 0);
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OP_COND(lez, (int32_t)T0 <= 0);
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OP_COND(ltz, (int32_t)T0 < 0);
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/* Branchs */
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//#undef USE_DIRECT_JUMP
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void OPPROTO op_goto_tb0(void)
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{
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GOTO_TB(op_goto_tb0, PARAM1, 0);
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}
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void OPPROTO op_goto_tb1(void)
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{
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GOTO_TB(op_goto_tb1, PARAM1, 1);
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}
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/* Branch to register */
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void op_save_breg_target (void)
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{
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env->btarget = T2;
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}
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void op_restore_breg_target (void)
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{
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T2 = env->btarget;
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}
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void op_breg (void)
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{
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env->PC = T2;
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RETURN();
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}
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void op_save_btarget (void)
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{
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env->btarget = PARAM1;
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RETURN();
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}
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/* Conditional branch */
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void op_set_bcond (void)
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{
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T2 = T0;
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RETURN();
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}
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void op_save_bcond (void)
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{
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env->bcond = T2;
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RETURN();
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}
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void op_restore_bcond (void)
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{
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T2 = env->bcond;
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RETURN();
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}
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void op_jnz_T2 (void)
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{
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if (T2)
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GOTO_LABEL_PARAM(1);
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RETURN();
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}
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/* CP0 functions */
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void op_mfc0 (void)
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{
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CALL_FROM_TB2(do_mfc0, PARAM1, PARAM2);
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RETURN();
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}
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void op_mtc0 (void)
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{
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CALL_FROM_TB2(do_mtc0, PARAM1, PARAM2);
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RETURN();
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}
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#if defined(MIPS_USES_R4K_TLB)
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void op_tlbwi (void)
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{
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CALL_FROM_TB0(do_tlbwi);
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RETURN();
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}
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void op_tlbwr (void)
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{
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CALL_FROM_TB0(do_tlbwr);
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RETURN();
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}
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void op_tlbp (void)
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{
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CALL_FROM_TB0(do_tlbp);
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RETURN();
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}
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void op_tlbr (void)
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{
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CALL_FROM_TB0(do_tlbr);
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RETURN();
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}
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#endif
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/* Specials */
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void op_pmon (void)
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{
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CALL_FROM_TB1(do_pmon, PARAM1);
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}
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void op_trap (void)
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{
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if (T0) {
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CALL_FROM_TB1(do_raise_exception, EXCP_TRAP);
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}
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RETURN();
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}
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void op_set_lladdr (void)
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{
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env->CP0_LLAddr = T2;
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}
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void debug_eret (void);
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void op_eret (void)
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{
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CALL_FROM_TB0(debug_eret);
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if (env->hflags & MIPS_HFLAG_ERL) {
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env->PC = env->CP0_ErrorEPC;
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env->hflags &= ~MIPS_HFLAG_ERL;
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} else {
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env->PC = env->CP0_EPC;
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env->hflags &= ~MIPS_HFLAG_EXL;
|
|
}
|
|
env->CP0_LLAddr = 1;
|
|
}
|
|
|
|
void op_deret (void)
|
|
{
|
|
CALL_FROM_TB0(debug_eret);
|
|
env->PC = env->CP0_DEPC;
|
|
}
|
|
|
|
void op_save_state (void)
|
|
{
|
|
env->hflags = PARAM1;
|
|
RETURN();
|
|
}
|
|
|
|
void op_save_pc (void)
|
|
{
|
|
env->PC = PARAM1;
|
|
RETURN();
|
|
}
|
|
|
|
void op_raise_exception (void)
|
|
{
|
|
CALL_FROM_TB1(do_raise_exception, PARAM1);
|
|
RETURN();
|
|
}
|
|
|
|
void op_raise_exception_err (void)
|
|
{
|
|
CALL_FROM_TB2(do_raise_exception_err, PARAM1, PARAM2);
|
|
RETURN();
|
|
}
|
|
|
|
void op_exit_tb (void)
|
|
{
|
|
EXIT_TB();
|
|
}
|
|
|