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Added dumping of NE segments and relocations.

This commit is contained in:
Alexandre Julliard 2005-07-01 19:23:39 +00:00
parent deaec125ca
commit dd41c12dff
1 changed files with 148 additions and 0 deletions
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148
tools/winedump/ne.c
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@ -33,6 +33,36 @@
#include "wine/winbase16.h"
#include "winedump.h"
struct ne_segtable_entry
{
WORD seg_data_offset; /* Sector offset of segment data */
WORD seg_data_length; /* Length of segment data */
WORD seg_flags; /* Flags associated with this segment */
WORD min_alloc; /* Minimum allocation size for this */
};
struct relocation_entry
{
BYTE address_type; /* Relocation address type */
BYTE relocation_type; /* Relocation type */
WORD offset; /* Offset in segment to fixup */
WORD target1; /* Target specification */
WORD target2; /* Target specification */
};
#define NE_RADDR_LOWBYTE 0
#define NE_RADDR_SELECTOR 2
#define NE_RADDR_POINTER32 3
#define NE_RADDR_OFFSET16 5
#define NE_RADDR_POINTER48 11
#define NE_RADDR_OFFSET32 13
#define NE_RELTYPE_INTERNAL 0
#define NE_RELTYPE_ORDINAL 1
#define NE_RELTYPE_NAME 2
#define NE_RELTYPE_OSFIXUP 3
#define NE_RELFLAG_ADDITIVE 4
static inline WORD get_word( const BYTE *ptr )
{
return ptr[0] | (ptr[1] << 8);
@ -228,8 +258,125 @@ static void dump_ne_exports( const void *base, const IMAGE_OS2_HEADER *ne )
}
}
static const char *get_reloc_name( BYTE addr_type, int additive )
{
switch(addr_type & 0x7f)
{
case NE_RADDR_LOWBYTE: return additive ? "byte add" : "byte";
case NE_RADDR_OFFSET16: return additive ? "off16 add" : "off16";
case NE_RADDR_POINTER32: return additive ? "ptr32 add" : "ptr32";
case NE_RADDR_SELECTOR: return additive ? "sel add" : "sel";
case NE_RADDR_POINTER48: return additive ? "ptr48 add" : "ptr48";
case NE_RADDR_OFFSET32: return additive ? "off32 add" : "off32";
}
return "???";
}
static const char *get_seg_flags( WORD flags )
{
static char buffer[256];
buffer[0] = 0;
#define ADD_FLAG(x) if (flags & NE_SEGFLAGS_##x) strcat( buffer, " " #x );
ADD_FLAG(DATA);
ADD_FLAG(ALLOCATED);
ADD_FLAG(LOADED);
ADD_FLAG(ITERATED);
ADD_FLAG(MOVEABLE);
ADD_FLAG(SHAREABLE);
ADD_FLAG(PRELOAD);
ADD_FLAG(EXECUTEONLY);
ADD_FLAG(READONLY);
ADD_FLAG(RELOC_DATA);
ADD_FLAG(SELFLOAD);
ADD_FLAG(DISCARDABLE);
ADD_FLAG(32BIT);
#undef ADD_FLAG
if (buffer[0])
{
buffer[0] = '(';
strcat( buffer, ")" );
}
return buffer;
}
static void dump_relocations( const void *base, const IMAGE_OS2_HEADER *ne, WORD count,
const struct relocation_entry *rep )
{
const WORD *modref = (const WORD *)((const BYTE *)ne + ne->ne_modtab);
const BYTE *mod_name, *func_name;
WORD i;
for (i = 0; i < count; i++, rep++)
{
int additive = rep->relocation_type & NE_RELFLAG_ADDITIVE;
switch (rep->relocation_type & 3)
{
case NE_RELTYPE_ORDINAL:
mod_name = (const BYTE *)ne + ne->ne_imptab + modref[rep->target1 - 1];
printf( "%6d: %s = %*.*s.%d\n", i + 1, get_reloc_name( rep->address_type, additive ),
*mod_name, *mod_name, mod_name + 1, rep->target2 );
break;
case NE_RELTYPE_NAME:
mod_name = (const BYTE *)ne + ne->ne_imptab + modref[rep->target1 - 1];
func_name = (const BYTE *)ne + ne->ne_imptab + rep->target2;
printf( "%6d: %s = %*.*s.%*.*s\n", i + 1, get_reloc_name( rep->address_type, additive ),
*mod_name, *mod_name, mod_name + 1,
*func_name, *func_name, func_name + 1 );
break;
case NE_RELTYPE_INTERNAL:
if ((rep->target1 & 0xff) == 0xff)
{
/* the module itself */
mod_name = (const BYTE *)ne + ne->ne_restab;
printf( "%6d: %s = %*.*s.%d\n", i + 1, get_reloc_name( rep->address_type, additive ),
*mod_name, *mod_name, mod_name + 1, rep->target2 );
}
else
printf( "%6d: %s = %d:%04x\n", i + 1, get_reloc_name( rep->address_type, additive ),
rep->target1, rep->target2 );
break;
case NE_RELTYPE_OSFIXUP:
/* Relocation type 7:
*
* These appear to be used as fixups for the Windows
* floating point emulator. Let's just ignore them and
* try to use the hardware floating point. Linux should
* successfully emulate the coprocessor if it doesn't
* exist.
*/
printf( "%6d: %s = TYPE %d, OFFSET %04x, TARGET %04x %04x\n",
i + 1, get_reloc_name( rep->address_type, additive ),
rep->relocation_type, rep->offset,
rep->target1, rep->target2 );
break;
}
}
}
static void dump_ne_segment( const void *base, const IMAGE_OS2_HEADER *ne, int segnum )
{
const struct ne_segtable_entry *table = (const struct ne_segtable_entry *)((const BYTE *)ne + ne->ne_segtab);
const struct ne_segtable_entry *seg = table + segnum - 1;
printf( "\nSegment %d:\n", segnum );
printf( " File offset: %08x\n", seg->seg_data_offset << ne->ne_align );
printf( " Length: %08x\n", seg->seg_data_length );
printf( " Flags: %08x %s\n", seg->seg_flags, get_seg_flags(seg->seg_flags) );
printf( " Alloc size: %08x\n", seg->min_alloc );
if (seg->seg_flags & NE_SEGFLAGS_RELOC_DATA)
{
const BYTE *ptr = (const BYTE *)base + (seg->seg_data_offset << ne->ne_align) + seg->seg_data_length;
WORD count = get_word(ptr);
ptr += sizeof(WORD);
printf( " Relocations:\n" );
dump_relocations( base, ne, count, (const struct relocation_entry *)ptr );
}
}
void ne_dump( const void *exe, size_t exe_size )
{
unsigned int i;
const IMAGE_DOS_HEADER *dos = exe;
const IMAGE_OS2_HEADER *ne = (const IMAGE_OS2_HEADER *)((const char *)dos + dos->e_lfanew);
@ -237,4 +384,5 @@ void ne_dump( const void *exe, size_t exe_size )
dump_ne_names( exe, ne );
dump_ne_resources( exe, ne );
dump_ne_exports( exe, ne );
for (i = 1; i <= ne->ne_cseg; i++) dump_ne_segment( exe, ne, i );
}