dump87.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 273 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  Dump x87 instructions.
*
****************************************************************************/


#include "standard.h"
#include "coderep.h"
#include "dump.h"

#if ( _TARGET & ( _TARG_IAPX86 | _TARG_80386 ) )

#include "i87sched.h"
#include "opcodes.h"
#include "gen8087.h"
#include "pattern.h"
#include "vergen.h"

extern  void            DumpOperand(name*);
extern  void            DumpFPInfo(instruction*);
extern  void            DumpInt(int);
extern  void            DumpInsNoNL(instruction*);

extern  void    DumpSeqs()
/************************/
{
    int i,j;
    temp_entry  *temp;

    if( STLocations ) {
        DumpLiteral( "seq: " );
        for( i = 0; i < MaxSeq; ++i ) {
            DumpChar( i+'a' );
            DumpChar( ' ' );
        }
        DumpNL();
        for( j = VIRTUAL_0; j < VIRTUAL_NONE; ++j ) {
            DumpLiteral( "  " );
            DumpChar( j+'0' );
            DumpLiteral( ": " );
            for( i = 0; i < MaxSeq; ++i ) {
                if( RegLoc( i, j ) == ACTUAL_NONE ) {
                    DumpChar( 'X' );
                } else {
                    DumpChar( RegLoc( i, j ) + '0' );
                }
                DumpChar( ' ' );
            }
            DumpNL();
        }
        DumpNL();
    }
    for( temp = TempList; temp != NULL; temp = temp->next ) {
        DumpNL();
        DumpLiteral( " Name: " );
        DumpOperand( temp->op );
        DumpNL();
        DumpLiteral( "Location: " );
        DumpChar( temp->actual_locn==ACTUAL_NONE?'X':temp->actual_locn+'0' );
        DumpLiteral( " Savings: " );
        DumpInt( temp->savings );
        if( temp->cached ) DumpLiteral( " CACHED" );
        DumpNL();
        DumpLiteral( "First: " );
        if( temp->first ) {
            DumpInsNoNL( temp->first );
        }
        DumpNL();
        DumpLiteral( " Last: " );
        if( temp->last ) {
            DumpInsNoNL( temp->last );
        }
        DumpNL();
    }
}


static  void    DumpOpcode( instruction *ins ) {
/**********************************************/


    switch( ins->head.opcode ) {
    case OP_ADD:
        DumpLiteral( "fadd" );
        break;
    case OP_SUB:
        DumpLiteral( "fsub" );
        break;
    case OP_MUL:
        DumpLiteral( "fmul" );
        break;
    case OP_DIV:
        DumpLiteral( "fdiv" );
        break;
    default:
        DumpLiteral( "ouch" );
        break;
    }
}


extern  bool    DumpFPUIns( instruction *ins ) {
/*********************************************/

    int         j;
    int         i;

    if( ins->u.gen_table == NULL || ins->table == NULL ) return( FALSE );
    switch( ins->u.gen_table->generate ) {
    case G_RRFBIN:
    case G_MRFBIN:
        DumpOpcode( ins );
        DumpLiteral( "r " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        break;
    case G_RNFBIN:
    case G_MNFBIN:
        DumpOpcode( ins );
        DumpLiteral( "  " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        break;
    case G_RRFBINP:
        DumpOpcode( ins );
        DumpLiteral( "rp" );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        DumpLiteral( ",st" );
        break;
    case G_RNFBINP:
        DumpOpcode( ins );
        DumpLiteral( "p " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        DumpLiteral( ",st" );
        break;
    case G_MFLD:
    case G_RFLD:
        DumpLiteral( "fld   " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        break;
    case G_MFST:
    case G_RFST:
        DumpLiteral( "fstp  " );
        DumpFPInfo( ins );
        DumpOperand( ins->result );
        break;
    case G_MFSTRND:
        DumpLiteral( "fstrnd" );
        DumpFPInfo( ins );
        DumpOperand( ins->result );
        break;
    case G_FCHS:
        DumpLiteral( "fneg  " );
        DumpFPInfo( ins );
        break;
    case G_FCHOP:
        DumpLiteral( "fchop " );
        DumpFPInfo( ins );
        break;
    case G_FRNDINT:
        DumpLiteral( "frndnt" );
        DumpFPInfo( ins );
        break;
    case G_FLDZ:
        DumpLiteral( "fldz  " );
        DumpFPInfo( ins );
        break;
    case G_FLD1:
        DumpLiteral( "fld1  " );
        DumpFPInfo( ins );
        break;
    case G_FINIT:
        DumpLiteral( "finit " );
        DumpFPInfo( ins );
        break;
    case G_FCOMPP:
        DumpLiteral( "fcompp" );
        DumpFPInfo( ins );
        break;
    case G_MCOMP:
    case G_RCOMP:
        DumpLiteral( "fcomp " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        break;
    case G_MCOM:
    case G_RCOM:
        DumpLiteral( "fcom  " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        break;
    case G_MFSTNP:
    case G_RFSTNP:
        DumpLiteral( "fst   " );
        DumpFPInfo( ins );
        DumpOperand( ins->result );
        break;
    case G_FTST:
        DumpLiteral( "ftst  " );
        DumpFPInfo( ins );
        DumpOperand( ins->operands[ 0 ] );
        break;
    case G_FXCH:
        DumpLiteral( "fxch  " );
        DumpFPInfo( ins );
        DumpOperand( ins->result );
        break;
    case G_FSINCOS:
        DumpLiteral( "fsinco" );
        DumpFPInfo( ins );
        break;
    default:
        return( FALSE );
    }
    DumpLiteral( " [" );
    i = 0;
    j = 0;
    for(;;) {
        j++;
        if( j > ins->num_operands ) break;
        DumpOperand( ins->operands[ i ] );
        if( j != ins->num_operands ) {
            DumpLiteral( "," );
        }
        i++;
    }
    if( ins->result != NULL ) {
        DumpLiteral( " ==> " );
        DumpOperand( ins->result );
    }
    DumpLiteral( "]" );
    return( TRUE );
}


#else
extern  bool    DumpFPUIns( instruction *ins ) {
/*********************************************/

    ins = ins;
    return( FALSE );

}
#endif