dbgutil.c

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/****************************************************************************
*
*                            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:  Debugger utility routines.
*
****************************************************************************/


#include "dbgdefn.h"
#include "dbglit.h"
#include "dbginfo.h"
#include "dbgerr.h"
#include "dbgmem.h"
#include "dbgtoggl.h"
#include "dbginp.h"
#include "dbgreg.h"
#include "dbgitem.h"
#include "dbgio.h"
#include "trpcore.h"
#include "ldsupp.h"
#include "mad.h"
#include "dui.h"

#include <ctype.h>
#include <string.h>
#include <float.h>
#include <limits.h>


extern char             *NameBuff;
extern unsigned char    CurrRadix;
extern input_stack      *InpStack;
extern char             *Language;
extern char             *TxtBuff;
extern system_config    SysConfig;
extern unsigned char    CurrRadix;
extern mod_handle       CodeAddrMod;
extern machine_state    *DbgRegs;


extern unsigned         CueFile( cue_handle *ch, char *file, unsigned max );
extern unsigned long    CueLine( cue_handle *ch );
extern char             *StrCopy( char *, char * );
extern char             *ReScan( char * );
extern char             *ScanPos( void );
extern void             NewLang( char * );
extern char             *AddHexSpec( char * );
extern char             *DupStr( char * );
extern void             AddrFloat( address * );
extern void             AddrFix( address * );
extern address          GetCodeDot( void );
extern void             GetMADTypeDefaultAt( address, mad_type_kind, mad_type_info * );
extern unsigned         NewCurrRadix( unsigned );
extern image_entry      *ImageEntry( mod_handle mh );
extern image_entry      *ImagePrimary( void );


unsigned DefaultSize( default_kind dk )
{
    type_info           info;
    mad_type_info       mti;

    if( ModDefault( CodeAddrMod, dk, &info ) != 0 ) {
        info.kind = TK_NONE;
        info.size = 0;
    }
    mti.b.kind = MTK_BASIC;
    if( info.size == 0 ) {
        GetMADTypeDefaultAt( GetCodeDot(),
                (dk==DK_INT) ? MTK_INTEGER : MTK_ADDRESS, &mti );
        info.size = mti.b.bits / BITS_PER_BYTE;
        if( mti.b.kind == MTK_ADDRESS ) {
            info.size -= (mti.a.seg.bits / BITS_PER_BYTE);
        }
    }
    if( info.kind == TK_POINTER && info.modifier == TM_FAR ) {
        if( mti.b.kind == MTK_BASIC ) {
            /* haven't gotten the info yet */
            GetMADTypeDefaultAt( GetCodeDot(), MTK_ADDRESS, &mti );
        }
        info.size -= (mti.a.seg.bits / BITS_PER_BYTE);
    }
    return( info.size );
}

static char *DoMadLongConv( char *p, unsigned long value, int radix, int size )
{
    unsigned            max = 50;
    unsigned            old;
    mad_type_info       mti;

    old = NewCurrRadix( radix );
    MADTypeInfoForHost( MTK_INTEGER, size, &mti );
    MADTypeToString( radix, &mti, &value, &max, p );
    NewCurrRadix( old );
    return( p + max );
}

char *CnvULongHex( unsigned long value, char *p )
{
    return( DoMadLongConv( p, value, 16, sizeof( value ) ) );
}

char    *CnvLongDec( long value, char *p )
{
    return( DoMadLongConv( p, value, 10, -(int)sizeof( value ) ) );
}

char    *CnvULongDec( unsigned long value, char *p )
{
    return( DoMadLongConv( p, value, 10, sizeof( value ) ) );
}

char    *CnvLong( long value, char *p )
{
    return( DoMadLongConv( p, value, CurrRadix, -(int)sizeof( value ) ) );
}

char    *CnvULong( unsigned long value, char *p )
{
    return( DoMadLongConv( p, value, CurrRadix, sizeof( value ) ) );
}

#ifdef DEAD_CODE
void CnvAddrToItem( address *a, item_mach *item, mad_type_info *mti )
{
    //MAD: a bit ugly
    AddrFix( a );
    switch( mti->b.bits - mti->a.seg.bits ) {
    case 16:
        item->sa.offset = a->mach.offset;
        item->sa.segment = a->mach.segment;
        break;
    case 32:
        item->la.offset = a->mach.offset;
        item->la.segment = a->mach.segment;
        break;
    }
}
#endif

char *AddrTypeToString( address *a, mad_type_handle th, char *p, unsigned max )
{
    mad_type_info       mti;
    unsigned            mad_max = max;
    item_mach           item;
    mad_type_info       host;

    MADTypeInfo( th, &mti );
    MADTypeInfoForHost( MTK_ADDRESS, sizeof( address ), &host );
    AddrFix( a );
    MADTypeConvert( &host, a, &mti, &item, 0 );
    MADTypeToString( 16, &mti, &item, &mad_max, p );
    return( p+mad_max );
}

char *AddrToIOString( address *a, char *p, unsigned max )
{
    return( AddrTypeToString( a,
                              MADTypeDefault( MAS_IO | MTK_ADDRESS, MAF_FULL, &DbgRegs->mr, a ),
                              p, max ) );
}

char *AddrToString( address *a, mad_address_format af, char *p, unsigned max )
{
    return( AddrTypeToString( a,
                              MADTypeDefault( MTK_ADDRESS, af, &DbgRegs->mr, a ),
                              p, max ) );
}

unsigned QualifiedSymName( sym_handle *sh, char *name, unsigned max, bool uniq )
{
    mod_handle  mod;
    unsigned    name_len;
    unsigned    len,rc;
    sym_info    sinfo;

    SymInfo( sh, NULL, &sinfo );
    if( sinfo.global ) {
        len = 0;
    } else {
        mod = SymMod( sh );
        name_len = ModName( mod, name, max );
        if( name_len < max ) {
            if( name != NULL ) {
                name += name_len;
                *name++ = '@';
                max -= name_len + 1;
            }
        }
        len = name_len + 1;
    }
    if( uniq && SymName( sh, NULL, SN_DEMANGLED, NULL, 0 ) != 0 ) {
        if( name != NULL ) {
            *name++ = '`';
            max--;
        }
        len++;
        name_len = SymName( sh, NULL, SN_OBJECT, name, max );
        len += name_len;
        if( name != NULL ) {
            name += name_len;
            *name++ = '`';
            *name = '\0';
            max -= name_len + 1;
        }
        len++;
    } else {
        rc = SymName( sh, NULL, SN_SCOPED, name, max );
        if( rc == 0 ) {
            rc = SymName( sh, NULL, SN_SOURCE, name, max );
        }
        len += rc;
    }
    return( len );
}

/*
 * CnvAddr -- address to string convertion gut routine
 */

char *CnvAddr( address addr, cnvaddr_option cao, bool uniq,
                        char *p, unsigned max )
{
    char                off_buff[40];
    unsigned            str_width, name_width, off_width;
    addr_off            sym_offset;
    search_result       sr;
    location_list       ll;
    DIPHDL( sym, sym );

    off_width = 0;
    AddrFloat( &addr );
    sr = DeAliasAddrSym( NO_MOD, addr, sym );
    switch( sr ) {
    case SR_NONE:
        return( NULL );
    case SR_CLOSEST:
        if( cao == CAO_NO_PLUS ) return( NULL );
        SymLocation( sym, NULL, &ll );
        sym_offset = addr.mach.offset - ll.e[0].u.addr.mach.offset;
        if( cao == CAO_NORMAL_PLUS ) {
            off_width = CnvULongHex( sym_offset, AddHexSpec( off_buff ) ) - off_buff + 1;
        }
        break;
    case SR_EXACT:
        break;
    }
    name_width = QualifiedSymName( sym, NULL, 0, uniq );
    str_width = name_width + off_width;
    if( max == 0 ) max = str_width;
    if( str_width > max ) { /* won't fit */
        if( off_width != 0 ) return( NULL );
        QualifiedSymName( sym, p, max - 1, uniq );
        p += max - 1;
        *p++ = '>';
        *p = NULLCHAR;
        return( p );
    }
    QualifiedSymName( sym, p, name_width + 1, uniq );
    p += name_width;
    if( off_width != 0 ) {
        --off_width;
        *p++ = '+';
        memcpy( p, off_buff, off_width );
        p += off_width;
        *p = NULLCHAR;
    }
    return( p );
}

char *CnvNearestAddr( address addr, char *buff, unsigned max )
{
    char        *p;

    p = CnvAddr( addr, CAO_OMIT_PLUS, FALSE, buff, max );
    if( p == NULL ) {
        p = AddrToString( &addr, MAF_FULL, buff, max );
    }
    return( p );
}

/*
 * StrAddr --
 */

char *StrAddr( address *addr, char *buff, unsigned max )
{
    char        *p;

    p = CnvAddr( *addr, CAO_NORMAL_PLUS, FALSE, buff, max );
    if( p == NULL ) {
        p = AddrToString( addr, MAF_FULL, buff, max );
    }
    return( p );
}


char *UniqStrAddr( address *addr, char *buff, unsigned max )
{
    char        *p;

    p = CnvAddr( *addr, CAO_NORMAL_PLUS, TRUE, buff, max );
    if( p == NULL ) {
        p = AddrToString( addr, MAF_FULL, buff, max );
    }
    return( p );
}


/*
 * LineAddr
 */

char *LineAddr( address  *addr, char *buff )
{