/*
* Checks if there is a tailing HLL signature in the file.
*
* This may work not work on executable images because of file alignments
* imposed by the linker (ilink at least). However, TryFindInImage will
* deal with those formats, so it doesn't really matter here.
*/
static dip_status TryFindTrailer( imp_image_handle *ii )
{
hll_trailer sig;
unsigned long pos;
pos = DCSeek( ii->sym_file, DIG_SEEK_POSBACK( sizeof( sig ) ), DIG_END );
if( pos == DIG_SEEK_ERROR ) {
return( DS_ERR | DS_FSEEK_FAILED );
}
if( DCRead( ii->sym_file, &sig, sizeof( sig ) ) != sizeof( sig ) ) {
return( DS_ERR | DS_FREAD_FAILED );
}
if( !IsHllSignature( &sig ) ) {
return( DS_FAIL );
}
pos -= sig.offset - sizeof( sig );
return( FoundHLLSign( ii, pos, sig.offset - sizeof( sig ) ) );
}
static dip_status TryFindTrailer( dig_fhandle fid, unsigned long *offp, unsigned long *sizep )
{
cv_trailer sig;
unsigned long pos;
pos = DCSeek( fid, DIG_SEEK_POSBACK( sizeof( sig ) ), DIG_END );
if( pos == DIG_SEEK_ERROR ) {
return( DS_ERR|DS_FSEEK_FAILED );
}
if( DCRead( fid, &sig, sizeof( sig ) ) != sizeof( sig ) ) {
return( DS_ERR|DS_FREAD_FAILED );
}
if( memcmp( sig.sig, CV4_NB09, sizeof( sig.sig ) ) != 0 ) {
return( DS_FAIL );
}
*sizep = sig.offset - sizeof( sig );
*offp = pos - *sizep;
return( DS_OK );
}