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/*
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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 (((tmp ^ T1 ^ (-1)) & (T0 ^ T1)) >> 31) { |
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/* operands of same sign, result different sign */
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CALL_FROM_TB1(do_raise_exception_direct, 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 (((tmp ^ T1) & (tmp ^ T0)) >> 31) { |
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/* operands of different sign, first operand and result different sign */
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CALL_FROM_TB1(do_raise_exception_direct, 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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|
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void op_clz (void) |
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{
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int n;
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|
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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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|
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void op_mult (void) |
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{
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set_HILO((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1); |
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RETURN(); |
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} |
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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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|
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void op_madd (void) |
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{
|
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int64_t tmp; |
| 382 |
|
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tmp = ((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1); |
| 384 |
set_HILO((int64_t)get_HILO() + tmp); |
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RETURN(); |
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} |
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|
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void op_maddu (void) |
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{
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uint64_t tmp; |
| 391 |
|
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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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|
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void op_msub (void) |
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{
|
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int64_t tmp; |
| 400 |
|
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tmp = ((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1); |
| 402 |
set_HILO((int64_t)get_HILO() - tmp); |
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RETURN(); |
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} |
| 405 |
|
| 406 |
void op_msubu (void) |
| 407 |
{
|
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uint64_t tmp; |
| 409 |
|
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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); |
| 418 |
RETURN(); |
| 419 |
} |
| 420 |
|
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void op_multu (void) |
| 422 |
{
|
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CALL_FROM_TB0(do_multu); |
| 424 |
RETURN(); |
| 425 |
} |
| 426 |
|
| 427 |
void op_madd (void) |
| 428 |
{
|
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CALL_FROM_TB0(do_madd); |
| 430 |
RETURN(); |
| 431 |
} |
| 432 |
|
| 433 |
void op_maddu (void) |
| 434 |
{
|
| 435 |
CALL_FROM_TB0(do_maddu); |
| 436 |
RETURN(); |
| 437 |
} |
| 438 |
|
| 439 |
void op_msub (void) |
| 440 |
{
|
| 441 |
CALL_FROM_TB0(do_msub); |
| 442 |
RETURN(); |
| 443 |
} |
| 444 |
|
| 445 |
void op_msubu (void) |
| 446 |
{
|
| 447 |
CALL_FROM_TB0(do_msubu); |
| 448 |
RETURN(); |
| 449 |
} |
| 450 |
#endif
|
| 451 |
|
| 452 |
/* Conditional moves */
|
| 453 |
void op_movn (void) |
| 454 |
{
|
| 455 |
if (T1 != 0) |
| 456 |
env->gpr[PARAM1] = T0; |
| 457 |
RETURN(); |
| 458 |
} |
| 459 |
|
| 460 |
void op_movz (void) |
| 461 |
{
|
| 462 |
if (T1 == 0) |
| 463 |
env->gpr[PARAM1] = T0; |
| 464 |
RETURN(); |
| 465 |
} |
| 466 |
|
| 467 |
/* Tests */
|
| 468 |
#define OP_COND(name, cond) \
|
| 469 |
void glue(op_, name) (void) \ |
| 470 |
{ \
|
| 471 |
if (cond) { \
|
| 472 |
T0 = 1; \
|
| 473 |
} else { \
|
| 474 |
T0 = 0; \
|
| 475 |
} \ |
| 476 |
RETURN(); \ |
| 477 |
} |
| 478 |
|
| 479 |
OP_COND(eq, T0 == T1); |
| 480 |
OP_COND(ne, T0 != T1); |
| 481 |
OP_COND(ge, (int32_t)T0 >= (int32_t)T1); |
| 482 |
OP_COND(geu, T0 >= T1); |
| 483 |
OP_COND(lt, (int32_t)T0 < (int32_t)T1); |
| 484 |
OP_COND(ltu, T0 < T1); |
| 485 |
OP_COND(gez, (int32_t)T0 >= 0);
|
| 486 |
OP_COND(gtz, (int32_t)T0 > 0);
|
| 487 |
OP_COND(lez, (int32_t)T0 <= 0);
|
| 488 |
OP_COND(ltz, (int32_t)T0 < 0);
|
| 489 |
|
| 490 |
/* Branchs */
|
| 491 |
//#undef USE_DIRECT_JUMP
|
| 492 |
|
| 493 |
void OPPROTO op_goto_tb0(void) |
| 494 |
{
|
| 495 |
GOTO_TB(op_goto_tb0, PARAM1, 0);
|
| 496 |
} |
| 497 |
|
| 498 |
void OPPROTO op_goto_tb1(void) |
| 499 |
{
|
| 500 |
GOTO_TB(op_goto_tb1, PARAM1, 1);
|
| 501 |
} |
| 502 |
|
| 503 |
/* Branch to register */
|
| 504 |
void op_save_breg_target (void) |
| 505 |
{
|
| 506 |
env->btarget = T2; |
| 507 |
} |
| 508 |
|
| 509 |
void op_restore_breg_target (void) |
| 510 |
{
|
| 511 |
T2 = env->btarget; |
| 512 |
} |
| 513 |
|
| 514 |
void op_breg (void) |
| 515 |
{
|
| 516 |
env->PC = T2; |
| 517 |
RETURN(); |
| 518 |
} |
| 519 |
|
| 520 |
void op_save_btarget (void) |
| 521 |
{
|
| 522 |
env->btarget = PARAM1; |
| 523 |
RETURN(); |
| 524 |
} |
| 525 |
|
| 526 |
/* Conditional branch */
|
| 527 |
void op_set_bcond (void) |
| 528 |
{
|
| 529 |
T2 = T0; |
| 530 |
RETURN(); |
| 531 |
} |
| 532 |
|
| 533 |
void op_save_bcond (void) |
| 534 |
{
|
| 535 |
env->bcond = T2; |
| 536 |
RETURN(); |
| 537 |
} |
| 538 |
|
| 539 |
void op_restore_bcond (void) |
| 540 |
{
|
| 541 |
T2 = env->bcond; |
| 542 |
RETURN(); |
| 543 |
} |
| 544 |
|
| 545 |
void op_jnz_T2 (void) |
| 546 |
{
|
| 547 |
if (T2)
|
| 548 |
GOTO_LABEL_PARAM(1);
|
| 549 |
RETURN(); |
| 550 |
} |
| 551 |
|
| 552 |
/* CP0 functions */
|
| 553 |
void op_mfc0 (void) |
| 554 |
{
|
| 555 |
CALL_FROM_TB2(do_mfc0, PARAM1, PARAM2); |
| 556 |
RETURN(); |
| 557 |
} |
| 558 |
|
| 559 |
void op_mtc0 (void) |
| 560 |
{
|
| 561 |
CALL_FROM_TB2(do_mtc0, PARAM1, PARAM2); |
| 562 |
RETURN(); |
| 563 |
} |
| 564 |
|
| 565 |
#if defined(MIPS_USES_R4K_TLB)
|
| 566 |
void op_tlbwi (void) |
| 567 |
{
|
| 568 |
CALL_FROM_TB0(do_tlbwi); |
| 569 |
RETURN(); |
| 570 |
} |
| 571 |
|
| 572 |
void op_tlbwr (void) |
| 573 |
{
|
| 574 |
CALL_FROM_TB0(do_tlbwr); |
| 575 |
RETURN(); |
| 576 |
} |
| 577 |
|
| 578 |
void op_tlbp (void) |
| 579 |
{
|
| 580 |
CALL_FROM_TB0(do_tlbp); |
| 581 |
RETURN(); |
| 582 |
} |
| 583 |
|
| 584 |
void op_tlbr (void) |
| 585 |
{
|
| 586 |
CALL_FROM_TB0(do_tlbr); |
| 587 |
RETURN(); |
| 588 |
} |
| 589 |
#endif
|
| 590 |
|
| 591 |
/* Specials */
|
| 592 |
void op_pmon (void) |
| 593 |
{
|
| 594 |
CALL_FROM_TB1(do_pmon, PARAM1); |
| 595 |
} |
| 596 |
|
| 597 |
void op_trap (void) |
| 598 |
{
|
| 599 |
if (T0) {
|
| 600 |
CALL_FROM_TB1(do_raise_exception_direct, EXCP_TRAP); |
| 601 |
} |
| 602 |
RETURN(); |
| 603 |
} |
| 604 |
|
| 605 |
void op_debug (void) |
| 606 |
{
|
| 607 |
CALL_FROM_TB1(do_raise_exception, EXCP_DEBUG); |
| 608 |
} |
| 609 |
|
| 610 |
void op_set_lladdr (void) |
| 611 |
{
|
| 612 |
env->CP0_LLAddr = T2; |
| 613 |
} |
| 614 |
|
| 615 |
void debug_eret (void); |
| 616 |
void op_eret (void) |
| 617 |
{
|
| 618 |
CALL_FROM_TB0(debug_eret); |
| 619 |
if (env->hflags & MIPS_HFLAG_ERL) {
|
| 620 |
env->PC = env->CP0_ErrorEPC; |
| 621 |
env->hflags &= ~MIPS_HFLAG_ERL; |
| 622 |
} else {
|
| 623 |
env->PC = env->CP0_EPC; |
| 624 |
env->hflags &= ~MIPS_HFLAG_EXL; |
| 625 |
} |
| 626 |
env->CP0_LLAddr = 1;
|
| 627 |
} |
| 628 |
|
| 629 |
void op_deret (void) |
| 630 |
{
|
| 631 |
CALL_FROM_TB0(debug_eret); |
| 632 |
env->PC = env->CP0_DEPC; |
| 633 |
} |
| 634 |
|
| 635 |
void op_save_state (void) |
| 636 |
{
|
| 637 |
env->hflags = PARAM1; |
| 638 |
RETURN(); |
| 639 |
} |
| 640 |
|
| 641 |
void op_save_pc (void) |
| 642 |
{
|
| 643 |
env->PC = PARAM1; |
| 644 |
RETURN(); |
| 645 |
} |
| 646 |
|
| 647 |
void op_raise_exception (void) |
| 648 |
{
|
| 649 |
CALL_FROM_TB1(do_raise_exception, PARAM1); |
| 650 |
RETURN(); |
| 651 |
} |
| 652 |
|
| 653 |
void op_raise_exception_err (void) |
| 654 |
{
|
| 655 |
CALL_FROM_TB2(do_raise_exception_err, PARAM1, PARAM2); |
| 656 |
RETURN(); |
| 657 |
} |
| 658 |
|
| 659 |
void op_exit_tb (void) |
| 660 |
{
|
| 661 |
EXIT_TB(); |
| 662 |
} |
| 663 |
|
| 664 |
void op_wait (void) |
| 665 |
{
|
| 666 |
env->halted = 1;
|
| 667 |
CALL_FROM_TB1(do_raise_exception, EXCP_HLT); |
| 668 |
} |