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bin.c
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/****************************************************************************
*
* This code is Public Domain.
*
* ========================================================================
*
* Description: Binary output routines.
* Used if -bin, -mz or -pe cmdline options were set.
*
****************************************************************************/
#include <stddef.h>
#include <ctype.h>
#include <time.h>
#include "globals.h"
#include "memalloc.h"
#include "parser.h"
#include "fixup.h"
#include "omfspec.h"
#include "bin.h"
#include "listing.h"
#include "lqueue.h"
#include "myassert.h"
#if BIN_SUPPORT
#define SECTORMAP 1 /* 1=print sector map in listing file */
#if PE_SUPPORT
#include "coffspec.h"
#include "input.h"
#include "mangle.h"
#include "segment.h"
#include "equate.h"
#include "expreval.h"
#define RAWSIZE_ROUND 1 /* SectionHeader.SizeOfRawData is multiple FileAlign. Required by MS COFF spec */
#define IMGSIZE_ROUND 1 /* OptionalHeader.SizeOfImage is multiple ObjectAlign. Required by MS COFF spec */
#define IMPDIRSUF "2" /* import directory segment suffix */
#define IMPNDIRSUF "3" /* import data null directory entry segment suffix */
#define IMPILTSUF "4" /* ILT segment suffix */
#define IMPIATSUF "5" /* IAT segment suffix */
#define IMPSTRSUF "6" /* import strings segment suffix */
#endif
/* pespec.h contains MZ header declaration */
#if MZ_SUPPORT || PE_SUPPORT
#include "pespec.h"
#endif
extern void SortSegments( int );
#if MZ_SUPPORT
/* default values for OPTION MZ */
static const struct MZDATA mzdata = {0x1E, 0x10, 0, 0xFFFF };
#endif
#if SECTORMAP
/* these strings are to be moved to ltext.h */
static const char szCaption[] = { "Binary Map:" };
static const char szCaption2[] = { "Segment Pos(file) RVA Size(fil) Size(mem)" };
static const char szSep[] = { "---------------------------------------------------------------" };
static const char szHeader[] = { "<header>" };
static const char szSegLine[] = { "%-24s %8" I32_SPEC "X %8" I32_SPEC "X %9" I32_SPEC "X %9" I32_SPEC "X" };
static const char szTotal[] = { "%-42s %9" I32_SPEC "X %9" I32_SPEC "X" };
#endif
struct calc_param {
uint_8 first; /* 1=first call of CalcOffset() */
uint_8 alignment; /* current aligment */
uint_32 fileoffset; /* current file offset */
uint_32 sizehdr; /* -mz: size of MZ header, else 0 */
uint_32 entryoffset; /* -bin only: offset of first segment */
struct asym *entryseg; /* -bin only: segment of first segment */
uint_32 imagestart; /* -bin: start offset (of first segment), else 0 */
#if PE_SUPPORT
uint_32 rva; /* -pe: current RVA */
union {
uint_32 imagebase; /* -pe: image base */
#if AMD64_SUPPORT
uint_64 imagebase64; /* -pe: image base */
#endif
};
#if RAWSIZE_ROUND
uint_32 rawpagesize;
#endif
#endif
};
/* reorder segments for DOSSEG:
1. code
2. unknown
3. initialized data
4. uninitialized data
5. stack
*/
static const enum seg_type dosseg_order[] = {
SEGTYPE_CODE, SEGTYPE_UNDEF, SEGTYPE_DATA,
SEGTYPE_BSS, SEGTYPE_STACK, SEGTYPE_ABS
};
#define SIZE_DOSSEG ( sizeof( dosseg_order ) / sizeof( dosseg_order[0] ) )
#if PE_SUPPORT
static const enum seg_type flat_order[] = {
SEGTYPE_HDR, SEGTYPE_CODE, SEGTYPE_CDATA, SEGTYPE_DATA, SEGTYPE_BSS, SEGTYPE_RSRC, SEGTYPE_RELOC
};
#define SIZE_PEFLAT ( sizeof( flat_order ) / sizeof( flat_order[0] ) )
enum pe_flags_values {
PEF_MZHDR = 0x01, /* 1=create mz header */
};
#define hdrname ".hdr$"
static const char hdrattr[] = { "read public 'HDR'" };
static const char edataname[] = { ".edata" };
static const char edataattr[] = { "FLAT read public alias('.rdata') 'DATA'" };
static const char idataname[] = { ".idata$" };
//static const char idataattr[] = { "FLAT read public 'DATA'" };
static const char idataattr[] = { "FLAT read public alias('.rdata') 'DATA'" };
static const char mzcode[] = {
"db 'MZ'\0" /* e_magic */
"dw 80h, 1, 0, 4\0" /* e_cblp, e_cp, e_crlc, e_cparhdr */
"dw 0, -1, 0, 0B8h\0" /* e_minalloc, e_maxalloc, e_ss, e_sp */
"dw 0, 0, 0, 40h\0" /* e_csum, e_ip, e_cs, e_sp, e_lfarlc */
"org 40h\0" /* e_lfanew, will be set by program */
"push cs\0"
"pop ds\0"
"mov dx,@F - 40h\0"
"mov ah,9\0"
"int 21h\0"
"mov ax,4C01h\0"
"int 21h\0"
"@@:\0"
"db 'This is a PE executable',0Dh,0Ah,'$'"
};
/* default 32-bit PE header */
static const struct IMAGE_PE_HEADER32 pe32def = {
'P'+ ('E' << 8 ),
{ IMAGE_FILE_MACHINE_I386, 0, 0, 0, 0, sizeof( struct IMAGE_OPTIONAL_HEADER32 ),
IMAGE_FILE_RELOCS_STRIPPED | IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_LINE_NUMS_STRIPPED | IMAGE_FILE_LOCAL_SYMS_STRIPPED | IMAGE_FILE_32BIT_MACHINE
},
{ IMAGE_NT_OPTIONAL_HDR32_MAGIC,
5,1,0,0,0,0,0,0, /* linkervers maj/min, sizeof code/init/uninit, entrypoint, base code/data */
0x400000, /* image base */
0x1000, 0x200, /* SectionAlignment, FileAlignment */
4,0,0,0,4,0, /* OSversion maj/min, Imagevers maj/min, Subsystemvers maj/min */
0,0,0,0, /* Win32vers, sizeofimage, sizeofheaders, checksum */
IMAGE_SUBSYSTEM_WINDOWS_CUI,0, /* subsystem, dllcharacteristics */
0x100000,0x1000, /* sizeofstack reserve/commit */
0x100000,0x1000, /* sizeofheap reserve/commit */
0, IMAGE_NUMBEROF_DIRECTORY_ENTRIES, /* loaderflags, numberofRVAandSizes */
}
};
#if AMD64_SUPPORT
/* default 64-bit PE header */
static const struct IMAGE_PE_HEADER64 pe64def = {
'P'+ ('E' << 8 ),
{ IMAGE_FILE_MACHINE_AMD64, 0, 0, 0, 0, sizeof( struct IMAGE_OPTIONAL_HEADER64 ),
IMAGE_FILE_RELOCS_STRIPPED | IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_LINE_NUMS_STRIPPED | IMAGE_FILE_LOCAL_SYMS_STRIPPED | IMAGE_FILE_LARGE_ADDRESS_AWARE | IMAGE_FILE_32BIT_MACHINE
},
{ IMAGE_NT_OPTIONAL_HDR64_MAGIC,
5,1,0,0,0,0,0, /* linkervers maj/min, sizeof code/init data/uninit data, entrypoint, base code RVA */
0x400000, /* image base */
0x1000, 0x200, /* SectionAlignment, FileAlignment */
4,0,0,0,4,0, /* OSversion maj/min, Imagevers maj/min, Subsystemvers maj/min */
0,0,0,0, /* Win32vers, sizeofimage, sizeofheaders, checksum */
IMAGE_SUBSYSTEM_WINDOWS_CUI,0, /* subsystem, dllcharacteristics */
0x100000,0x1000, /* sizeofstack reserve/commit */
0x100000,0x1000, /* sizeofheap reserve/commit */
0, IMAGE_NUMBEROF_DIRECTORY_ENTRIES, /* loaderflags, numberofRVAandSizes */
}
};
#endif
#endif
#ifdef __I86__
/* "huge" fwrite() for JWasmr.exe */
uint_32 hfwrite( uint_8 huge *pBuffer, int size, uint_32 count, FILE *file )
/**************************************************************************/
{
uint_32 written;
unsigned tmpsize;
for ( written = 0; written < count; written += tmpsize ) {
if ( count > 0xFE00 )
tmpsize = 0xFE00;
else
tmpsize = count;
if ( fwrite( pBuffer, size, tmpsize, file ) != tmpsize )
WriteError();
pBuffer += tmpsize;
}
return( written );
}
#endif
/* calculate starting offset of segments and groups */
static void CalcOffset( struct dsym *curr, struct calc_param *cp )
/****************************************************************/
{
uint_32 align;
uint_32 alignbytes;
uint_32 offset;
struct dsym *grp;
if ( curr->e.seginfo->segtype == SEGTYPE_ABS ) {
curr->e.seginfo->start_offset = curr->e.seginfo->abs_frame << 4;
DebugMsg(("CalcOffset(%s): abs seg, offset=%" I32_SPEC "Xh\n",
curr->sym.name, curr->e.seginfo->start_offset ));
return;
} else if ( curr->e.seginfo->info )
return;
grp = (struct dsym *)curr->e.seginfo->group;
if ( cp->alignment > curr->e.seginfo->alignment )
align = 1 << cp->alignment;
else
align = 1 << curr->e.seginfo->alignment;
//alignbytes = ((offset + (align - 1)) & (-align)) - offset;
alignbytes = ((cp->fileoffset + (align - 1)) & (-align)) - cp->fileoffset;
cp->fileoffset += alignbytes;
if ( grp == NULL ) {
offset = cp->fileoffset - cp->sizehdr; // + alignbytes;
DebugMsg(("CalcOffset(%s): fileofs=%" I32_SPEC "Xh, ofs=%" I32_SPEC "Xh\n", curr->sym.name, cp->fileoffset, offset ));
} else {
#if PE_SUPPORT
if ( ModuleInfo.sub_format == SFORMAT_PE )
offset = cp->rva;
else
#endif
if ( grp->sym.total_size == 0 ) {
grp->sym.offset = cp->fileoffset - cp->sizehdr;
offset = 0;
} else
offset = grp->sym.total_size + alignbytes;
DebugMsg(("CalcOffset(%s): fileofs=%" I32_SPEC "Xh, alignbytes=%" I32_SPEC "u, ofs=%" I32_SPEC "Xh, group=%s, grp.ofs=%" I32_SPEC "Xh\n",
curr->sym.name, cp->fileoffset, alignbytes, offset, grp->sym.name, grp->sym.offset ));
}
/* v2.04: added */
/* v2.05: this addition did mess sample Win32_5.asm, because the
* "empty" alignment sections are now added to <fileoffset>.
* todo: VA in binary map is displayed wrong.
*/
if ( cp->first == FALSE ) {
/* v2.05: do the reset more carefully.
* Do reset start_loc only if
* - segment is in a group and
* - group isn't FLAT or segment's name contains '$'
*/
if ( grp && ( grp != ModuleInfo.flat_grp ||
strchr( curr->sym.name, '$' ) ) )
curr->e.seginfo->start_loc = 0;
}
curr->e.seginfo->fileoffset = cp->fileoffset;
curr->e.seginfo->start_offset = offset;
//if ( cp->first && ModuleInfo.sub_format == SFORMAT_NONE ) {
if ( ModuleInfo.sub_format == SFORMAT_NONE ) {
cp->fileoffset += curr->sym.max_offset - curr->e.seginfo->start_loc;
if ( cp->first )
cp->imagestart = curr->e.seginfo->start_loc;
/* there's no real entry address for BIN, therefore the
start label must be at the very beginning of the file */
if ( cp->entryoffset == -1 ) {
cp->entryoffset = offset;
cp->entryseg = (struct asym *)curr;
}
} else {
/* v2.05: changed, removed */
//curr->e.seginfo->fileoffset += curr->e.seginfo->start_loc;
//fileoffset += curr->sym.max_offset;
#if PE_SUPPORT
cp->rva += curr->sym.max_offset - curr->e.seginfo->start_loc;
if ( curr->e.seginfo->segtype == SEGTYPE_BSS )
;
else
#endif
cp->fileoffset += curr->sym.max_offset - curr->e.seginfo->start_loc;
}
//offset += curr->sym.max_offset - curr->e.seginfo->start_loc;
offset += curr->sym.max_offset;
if ( grp ) {
//grp->sym.total_size = offset + curr->e.seginfo->start_loc;
grp->sym.total_size = offset;
/* v2.07: for 16-bit groups, ensure that it fits in 64 kB */
if ( grp->sym.total_size > 0x10000 && grp->sym.Ofssize == USE16 ) {
EmitWarn( 2, GROUP_EXCEEDS_64K, grp->sym.name );
}
}
#if PE_SUPPORT
DebugMsg(("CalcOffset(%s) exit: seg.fileofs=%" I32_SPEC "Xh, seg.start_offset=%" I32_SPEC "Xh, endofs=%" I32_SPEC "Xh fileofs=%" I32_SPEC "Xh rva=%" I32_SPEC "Xh\n",
curr->sym.name, curr->e.seginfo->fileoffset, curr->e.seginfo->start_offset, offset, cp->fileoffset, cp->rva ));
#else
DebugMsg(("CalcOffset(%s) exit: seg.fileofs=%" I32_SPEC "Xh, seg.start_offset=%" I32_SPEC "Xh, endofs=%" I32_SPEC "Xh fileofs=%" I32_SPEC "Xh\n",
curr->sym.name, curr->e.seginfo->fileoffset, curr->e.seginfo->start_offset, offset, cp->fileoffset ));
#endif
cp->first = FALSE;
return;
}
#if MZ_SUPPORT
/*
* if pDst==NULL: count the number of segment related fixups
* if pDst!=NULL: write segment related fixups
*/
static int GetSegRelocs( uint_16 *pDst )
/**************************************/
{
struct dsym *curr;
int count = 0;
uint_16 valueofs;
uint_16 valueseg;
uint_32 loc;
struct fixup *fixup;
DebugMsg(("GetSegRelocs( %p ) enter\n", pDst ));
for( curr = SymTables[TAB_SEG].head; curr; curr = curr->next ) {
if ( curr->e.seginfo->segtype == SEGTYPE_ABS )
continue;
for ( fixup = curr->e.seginfo->FixupList.head; fixup; fixup = fixup->nextrlc ) {
switch ( fixup->type ) {
case FIX_PTR32:
case FIX_PTR16:
case FIX_SEG:
/* ignore fixups for absolute segments */
if ( fixup->sym && fixup->sym->segment && ((struct dsym *)fixup->sym->segment)->e.seginfo->segtype == SEGTYPE_ABS )
break;
DebugMsg(("GetSegRelocs: found seg-related fixup at %s.%" I32_SPEC "X\n", curr->sym.name, fixup->locofs ));
count++;
if ( pDst ) {
/* v2.04: fixed */
loc = fixup->locofs + ( curr->e.seginfo->start_offset & 0xf );
valueseg = curr->e.seginfo->start_offset >> 4;
if ( curr->e.seginfo->group ) {
loc += curr->e.seginfo->group->offset & 0xf;
valueseg += curr->e.seginfo->group->offset >> 4;
}
if ( fixup->type == FIX_PTR16 )
loc += 2;
else if ( fixup->type == FIX_PTR32 )
loc += 4;
/* offset may be > 64 kB */
while ( loc >= 0x10000 ) {
loc -= 16;
valueseg++;
};
valueofs = loc;
DebugMsg(("GetSegRelocs: locofs=%" I32_SPEC "X fileofs=%" I32_SPEC "X segofs=%" I32_SPEC "X grpofs=%" I32_SPEC "X, fixup value: %X %X\n",
fixup->locofs, curr->e.seginfo->fileoffset, curr->e.seginfo->start_offset, curr->e.seginfo->group ? curr->e.seginfo->group->offset: 0, valueofs, valueseg ));
*pDst++ = valueofs;
*pDst++ = valueseg;
}
break;
}
}
}
DebugMsg(("GetSegRelocs()=%u\n", count ));
return( count );
}
#endif
/* get image size.
* memimage=FALSE: get size without uninitialized segments (BSS and STACK)
* memimage=TRUE: get full size
*/
static uint_32 GetImageSize( bool memimage )
/******************************************/
{
struct dsym *curr;
bool first;
uint_32 vsize = 0;
uint_32 size = 0;
for( curr = SymTables[TAB_SEG].head, first = TRUE; curr; curr = curr->next ) {
uint_32 tmp;
if ( curr->e.seginfo->segtype == SEGTYPE_ABS || curr->e.seginfo->info )
continue;
if ( memimage == FALSE ) {
if ( curr->e.seginfo->bytes_written == 0 ) {
struct dsym *dir;
for ( dir = curr->next; dir; dir = dir->next )
if ( dir->e.seginfo->bytes_written )
break;
if ( !dir )
break; /* done, skip rest of segments! */
}
}
tmp = curr->e.seginfo->fileoffset + (curr->sym.max_offset - curr->e.seginfo->start_loc );
if ( first == FALSE )
vsize += curr->e.seginfo->start_loc;
if ( memimage )
tmp += vsize;
DebugMsg(("GetImageSize(%s): fileofs=%" I32_SPEC "Xh, max_offs=%" I32_SPEC "Xh start=%" I32_SPEC "Xh\n",
curr->sym.name, curr->e.seginfo->fileoffset, curr->sym.max_offset, curr->e.seginfo->start_loc ));
if ( size < tmp )
size = tmp;
first = FALSE;
}
DebugMsg(("GetImageSize(%u)=%" I32_SPEC "Xh\n", memimage, size ));
return( size );
}
/* micro-linker. resolve internal fixups.
*/
union genptr {
uint_8 *db;
uint_16 *dw;
uint_32 *dd;
#if AMD64_SUPPORT
uint_64 *dq;
#endif
};
/* handle the fixups contained in a segment */
static ret_code DoFixup( struct dsym *curr, struct calc_param *cp )
/*****************************************************************/
{
union genptr codeptr;
struct dsym *seg;
uint_32 value;
#if PE_SUPPORT && AMD64_SUPPORT
uint_64 value64;
#endif
uint_32 offset; /* v2.07 */
struct fixup *fixup;
char *tmp;
if ( curr->e.seginfo->segtype == SEGTYPE_ABS )
return( NOT_ERROR );
DebugMsg(("DoFixup(%s) enter, segment start ofs=%" I32_SPEC "Xh\n", curr->sym.name, curr->e.seginfo->start_offset ));
for ( fixup = curr->e.seginfo->FixupList.head; fixup; fixup = fixup->nextrlc ) {
codeptr.db = curr->e.seginfo->CodeBuffer +
( fixup->locofs - curr->e.seginfo->start_loc );
//if ( fixup->sym && fixup->sym->segment ) { /* v2.08: changed */
if ( fixup->sym && ( fixup->sym->segment || fixup->sym->variable ) ) {
/* assembly time variable (also $ symbol) in reloc? */
/* v2.07: moved inside if-block, using new local var "offset" */
if ( fixup->sym->variable ) {
seg = (struct dsym *)fixup->segment_var;
offset = 0;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X, %s): variable, fixup->segment=%Xh fixup->offset=%" I32_SPEC "Xh, fixup->sym->offset=%" I32_SPEC "Xh\n",
curr->sym.name, fixup->locofs, fixup->sym->name, seg, fixup->offset, fixup->sym->offset ));
} else {
seg = (struct dsym *)fixup->sym->segment;
offset = fixup->sym->offset;
}
/* the offset result consists of
* - the symbol's offset
* - the fixup's offset (usually the displacement )
* - the segment/group offset in the image
*/
switch ( fixup->type ) {
case FIX_OFF32_IMGREL:
value = ( fixup->offset + offset + seg->e.seginfo->start_offset ) - cp->imagestart;
DebugMsg(("DoFixup(%s): IMGREL, loc=%" I32_SPEC "X value=%" I32_SPEC "X seg.start=%" I32_SPEC "X imagestart=%" I32_SPEC "X\n",
curr->sym.name, fixup->locofs, value, seg->e.seginfo->start_offset, cp->imagestart ));
break;
case FIX_OFF32_SECREL:
value = ( fixup->offset + offset ) - seg->e.seginfo->start_loc;
/* check if symbol's segment name contains a '$'.
* If yes, search the segment without suffix.
*/
if ( tmp = strchr( seg->sym.name, '$' ) ) {
int namlen = tmp - seg->sym.name;
struct dsym *segfirst;
for( segfirst = SymTables[TAB_SEG].head; segfirst; segfirst = segfirst->next ) {
if ( segfirst->sym.name_size == namlen &&
( memcmp( segfirst->sym.name, seg->sym.name, namlen ) == 0 ) ) {
value = ( fixup->offset + offset + seg->e.seginfo->start_offset ) - segfirst->e.seginfo->start_offset;
DebugMsg(("DoFixup(%s): SECREL, primary seg=%s, start_offset=%" I32_SPEC "X\n",
curr->sym.name, segfirst->sym.name, segfirst->e.seginfo->start_offset ));
break;
}
}
}
DebugMsg(("DoFixup(%s): SECREL, loc=%" I32_SPEC "X, value=%" I32_SPEC "X\n",
curr->sym.name, fixup->locofs, value ));
break;
case FIX_RELOFF8:
case FIX_RELOFF16:
case FIX_RELOFF32:
/* v1.96: special handling for "relative" fixups */
value = seg->e.seginfo->start_offset + fixup->offset + offset;
DebugMsg(("DoFixup(%s): RELOFFx, loc=%" I32_SPEC "X, sym=%s, [start_offset=%" I32_SPEC "Xh, fixup->offset=%" I32_SPEC "Xh, fixup->sym->offset=%" I32_SPEC "Xh\n",
curr->sym.name, fixup->locofs, fixup->sym->name, seg->e.seginfo->start_offset, fixup->offset, offset ));
break;
default:
/* v2.01: don't use group if fixup explicitely refers the segment! */
//if ( seg->e.seginfo->group ) {
if ( seg->e.seginfo->group && fixup->frame_type != FRAME_SEG ) {
value = (seg->e.seginfo->group->offset & 0xF) + seg->e.seginfo->start_offset + fixup->offset + offset;
#if PE_SUPPORT
if ( ModuleInfo.sub_format == SFORMAT_PE ) {
#if AMD64_SUPPORT
if ( curr->e.seginfo->Ofssize == USE64 )
value64 = value + cp->imagebase64;
#endif
value += cp->imagebase;
}
#endif
} else
value = (seg->e.seginfo->start_offset & 0xF) + fixup->offset + offset;
DebugMsg(("DoFixup(%s): loc=%04" I32_SPEC "X, sym=%s, target->start_offset=%" I32_SPEC "Xh, fixup->offset=%" I32_SPEC "Xh, fixup->sym->offset=%" I32_SPEC "Xh\n",
curr->sym.name, fixup->locofs, fixup->sym->name, seg->e.seginfo->start_offset, fixup->offset, offset ));
break;
}
} else {
/* v2.10: member segment_var is for assembly-time variables only */
//seg = (struct dsym *)fixup->segment_var;
seg = NULL;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X, %s): target segment=0, fixup->offset=%" I32_SPEC "Xh, fixup->sym->offset=%" I32_SPEC "Xh\n",
curr->sym.name, fixup->locofs, fixup->sym ? fixup->sym->name : "", fixup->offset ? offset : 0 ));
value = 0;
}
switch ( fixup->type ) {
case FIX_RELOFF8:
//*codeptr.db += (value - fixup->locofs + 1) & 0xff;
/* changed in v1.95 */
*codeptr.db += (value - (fixup->locofs + curr->e.seginfo->start_offset) - 1) & 0xff;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_RELOFF8, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.db ));
break;
case FIX_RELOFF16:
//*codeptr.dw += (value - fixup->locofs + 2) & 0xffff;
/* changed in v1.95 */
*codeptr.dw += (value - (fixup->locofs + curr->e.seginfo->start_offset) - 2) & 0xffff;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_RELOFF16, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.dw ));
break;
case FIX_RELOFF32:
#if AMD64_SUPPORT
/* adjust the location for EIP-related offsets if USE64 */
if ( curr->e.seginfo->Ofssize == USE64 ) {
fixup->locofs += fixup->addbytes - 4;
}
#endif
//*codeptr.dd += (value - fixup->locofs + 4);
/* changed in v1.95 */
*codeptr.dd += (value - (fixup->locofs + curr->e.seginfo->start_offset) - 4);
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_RELOFF32, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.dd ));
break;
case FIX_OFF8:
*codeptr.db = value & 0xff;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_OFF8, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.db ));
break;
case FIX_OFF16:
*codeptr.dw = value & 0xffff;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_OFF16, value=%" I32_SPEC "Xh, target=%p *target=%Xh\n", curr->sym.name, fixup->locofs, value, codeptr, *codeptr.dw ));
break;
case FIX_OFF32:
*codeptr.dd = value;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_OFF32, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.dd ));
break;
case FIX_OFF32_IMGREL:
*codeptr.dd = value;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_OFF32_IMGREL, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.dd ));
break;
case FIX_OFF32_SECREL:
*codeptr.dd = value;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_OFF32_SECREL, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.dd ));
break;
#if AMD64_SUPPORT
case FIX_OFF64:
#if PE_SUPPORT
if ( ModuleInfo.sub_format == SFORMAT_PE && curr->e.seginfo->Ofssize == USE64 )
*codeptr.dq = value64;
else
#endif
*codeptr.dq = value;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_OFF64, value=%" I32_SPEC "Xh, *target=%" I64_SPEC "Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.dq ));
break;
#endif
case FIX_HIBYTE:
*codeptr.db = (value >> 8) & 0xff;
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_HIBYTE, value=%" I32_SPEC "Xh, *target=%Xh\n", curr->sym.name, fixup->locofs, value, *codeptr.db ));
break;
case FIX_SEG:
/* absolute segments are ok */
if ( fixup->sym &&
fixup->sym->state == SYM_SEG &&
((struct dsym *)fixup->sym)->e.seginfo->segtype == SEGTYPE_ABS ) {
*codeptr.dw = ((struct dsym *)fixup->sym)->e.seginfo->abs_frame;
break;
}
#if MZ_SUPPORT
if ( ModuleInfo.sub_format == SFORMAT_MZ ) {
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_SEG frame=%u, ", curr->sym.name, fixup->locofs, fixup->frame_type ));
if ( fixup->sym->state == SYM_GRP ) {
seg = (struct dsym *)fixup->sym;
*codeptr.dw = seg->sym.offset >> 4;
DebugMsg(("GROUP symbol, offset=%" I32_SPEC "Xh codeptr=%p\n", seg->sym.offset, codeptr ));
} else if ( fixup->sym->state == SYM_SEG ) {
/* v2.04: added */
seg = (struct dsym *)fixup->sym;
*codeptr.dw = ( seg->e.seginfo->start_offset + ( seg->e.seginfo->group ? seg->e.seginfo->group->offset : 0 ) ) >> 4;
DebugMsg(("SEGMENT symbol, start_offset=%" I32_SPEC "Xh\n", seg->e.seginfo->start_offset ));
//} else if ( seg->e.seginfo->group ) {
} else if ( fixup->frame_type == FRAME_GRP ) {
/* v2.04: changed */
//*codeptr.dw = (seg->e.seginfo->start_offset + seg->e.seginfo->group->offset) >> 4;
*codeptr.dw = seg->e.seginfo->group->offset >> 4;
DebugMsg(("group.offset=%" I32_SPEC "Xh\n", seg->e.seginfo->group->offset ));
} else {
*codeptr.dw = seg->e.seginfo->start_offset >> 4;
DebugMsg(("segment.offset=%" I32_SPEC "Xh\n", seg->e.seginfo->start_offset ));
}
break;
}
#endif
case FIX_PTR16:
#if 1
/* v2.10: absolute segments are ok */
if ( seg && seg->e.seginfo->segtype == SEGTYPE_ABS ) {
*codeptr.dw = value & 0xffff;
codeptr.dw++;
*codeptr.dw = seg->e.seginfo->abs_frame;
break;
}
#endif
#if MZ_SUPPORT
if ( ModuleInfo.sub_format == SFORMAT_MZ ) {
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_PTR16, seg->start=%Xh\n", curr->sym.name, fixup->locofs, seg->e.seginfo->start_offset ));
*codeptr.dw = value & 0xffff;
codeptr.dw++;
//if ( seg->e.seginfo->group ) { /* v2.04: changed */
if ( fixup->frame_type == FRAME_GRP ) {
/* v2.04: changed */
//*codeptr.dw = (seg->e.seginfo->start_offset + seg->e.seginfo->group->offset) >> 4;
*codeptr.dw = seg->e.seginfo->group->offset >> 4;
} else {
/* v2.05: changed */
//*codeptr.dw = seg->e.seginfo->start_offset >> 4;
*codeptr.dw = ( seg->e.seginfo->start_offset + ( seg->e.seginfo->group ? seg->e.seginfo->group->offset : 0 ) ) >> 4;
}
break;
}
#endif
case FIX_PTR32:
#if 1
/* v2.10: absolute segments are ok */
if ( seg && seg->e.seginfo->segtype == SEGTYPE_ABS ) {
*codeptr.dd = value;
codeptr.dd++;
*codeptr.dw = seg->e.seginfo->abs_frame;
break;
}
#endif
#if MZ_SUPPORT
if ( ModuleInfo.sub_format == SFORMAT_MZ ) {
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): FIX_PTR32\n", curr->sym.name, fixup->locofs ));
*codeptr.dd = value;
codeptr.dd++;
//if (seg->e.seginfo->group ) { /* v2.04: changed */
if ( fixup->frame_type == FRAME_GRP ) {
/* v2.04: changed */
//*codeptr.dw = (seg->e.seginfo->start_offset + seg->e.seginfo->group->offset) >> 4;
*codeptr.dw = seg->e.seginfo->group->offset >> 4;
} else {
/* v2.05: changed */
//*codeptr.dw = seg->e.seginfo->start_offset >> 4;
*codeptr.dw = ( seg->e.seginfo->start_offset + ( seg->e.seginfo->group ? seg->e.seginfo->group->offset : 0 ) ) >> 4;
}
break;
}
#endif
default:
DebugMsg(("DoFixup(%s, %04" I32_SPEC "X): invalid fixup %u\n", curr->sym.name, fixup->locofs, fixup->type ));
EmitErr( INVALID_FIXUP_TYPE, ModuleInfo.fmtopt->formatname, fixup->type, curr->sym.name, fixup->locofs );
//return( ERROR );
}
}
return( NOT_ERROR );
}
#if PE_SUPPORT
static void pe_create_MZ_header( struct module_info *modinfo )
/************************************************************/
{
const char *p;
struct asym *sym;
DebugMsg(("pe_create_MZ_header enter\n" ));
if ( Parse_Pass == PASS_1 && SymSearch( hdrname "1" ) == NULL )
modinfo->g.pe_flags |= PEF_MZHDR;
if ( modinfo->g.pe_flags & PEF_MZHDR ) {
DebugMsg(("pe_create_MZ_header: generate code\n" ));
AddLineQueueX("%r DOTNAME", T_OPTION );
AddLineQueueX("%s1 %r USE16 %r %s", hdrname, T_SEGMENT, T_WORD, hdrattr );
for( p = mzcode; p < mzcode + sizeof( mzcode ); p += strlen( p ) + 1 )
AddLineQueue( p );
AddLineQueueX("%s1 %r", hdrname, T_ENDS );
RunLineQueue();
if ( ( sym = SymSearch( hdrname "1" ) ) && sym->state == SYM_SEG )
(( struct dsym *)sym)->e.seginfo->segtype = SEGTYPE_HDR;
}
}
/* get/set value of @pe_file_flags variable */
static void set_file_flags( struct asym *sym, struct expr *opnd )
/***************************************************************/
{
struct dsym *pehdr;
struct IMAGE_PE_HEADER32 *pe;
pehdr = ( struct dsym *)SymSearch( hdrname "2" );
if ( !pehdr )
return;
pe = (struct IMAGE_PE_HEADER32 *)pehdr->e.seginfo->CodeBuffer;
if ( opnd ) /* set the value? */
pe->FileHeader.Characteristics = opnd->value;
sym->value = pe->FileHeader.Characteristics;
DebugMsg(("set_file_flags(%s, %X): value=%X\n", sym->name, opnd, sym->value ));
}
void pe_create_PE_header( void )
/******************************/
{
struct asym *sym;
struct dsym *pehdr;
int size;
void *p;
DebugMsg(("pe_create_PE_header enter\n" ));
if ( Parse_Pass == PASS_1 ) {
if ( ModuleInfo.model != MODEL_FLAT ) {
EmitError( MODEL_MUST_BE_FLAT );
}
#if AMD64_SUPPORT
if ( ModuleInfo.defOfssize == USE64 ) {
size = sizeof( struct IMAGE_PE_HEADER64 );
p = (void *)&pe64def;
} else {
#endif
size = sizeof( struct IMAGE_PE_HEADER32 );
p = (void *)&pe32def;
#if AMD64_SUPPORT
}
#endif
pehdr = ( struct dsym *)SymSearch( hdrname "2" );
if ( pehdr == NULL ) {
pehdr = (struct dsym *)CreateIntSegment( hdrname "2", "HDR", 2, ModuleInfo.defOfssize, TRUE );
pehdr->e.seginfo->group = &ModuleInfo.flat_grp->sym;
pehdr->e.seginfo->combine = COMB_ADDOFF; /* PUBLIC */
pehdr->e.seginfo->characteristics = (IMAGE_SCN_MEM_READ >> 24);
pehdr->e.seginfo->readonly = 1;
pehdr->e.seginfo->bytes_written = size; /* ensure that ORG won't set start_loc (assemble.c, SetCurrOffset) */
pehdr->sym.max_offset = size;
} else {
if ( pehdr->sym.max_offset < size )
pehdr->sym.max_offset = size;
pehdr->e.seginfo->internal = TRUE;
pehdr->e.seginfo->start_loc = 0;
}
pehdr->e.seginfo->segtype = SEGTYPE_HDR;
pehdr->e.seginfo->CodeBuffer = LclAlloc( size );
memcpy( pehdr->e.seginfo->CodeBuffer, p, size );
#if 0 //def __UNIX__
time((int_32 *)(pehdr->e.seginfo->CodeBuffer+offsetof( struct IMAGE_PE_HEADER32, FileHeader.TimeDateStamp )));
#else
time((time_t *)(pehdr->e.seginfo->CodeBuffer+offsetof( struct IMAGE_PE_HEADER32, FileHeader.TimeDateStamp )));
#endif
sym = CreateVariable( "@pe_file_flags", ((struct IMAGE_PE_HEADER32 *)p)->FileHeader.Characteristics );
if ( sym ) {
DebugMsg(("pe_create_PE_header: CreateVariable(@pe_file_flags)=%X [value=%X]\n", sym, sym ? sym->value : 0 ));
sym->predefined = TRUE;
sym->sfunc_ptr = (internal_func)&set_file_flags;
}
}
}
#define CHAR_READONLY ( IMAGE_SCN_MEM_READ >> 24 )
static void pe_create_section_table( void )
/*****************************************/
{
int i;
struct dsym *objtab;
struct dsym *curr;
int bCreated = FALSE;
int objs;
DebugMsg(("pe_create_section table enter\n" ));
if ( Parse_Pass == PASS_1 ) {
objtab = ( struct dsym *)SymSearch( hdrname "3" );
if ( !objtab ) {
bCreated = TRUE;
objtab = (struct dsym *)CreateIntSegment( hdrname "3", "HDR", 2, ModuleInfo.defOfssize, TRUE );
objtab->e.seginfo->group = &ModuleInfo.flat_grp->sym;
objtab->e.seginfo->combine = COMB_ADDOFF; /* PUBLIC */
}
objtab->e.seginfo->segtype = SEGTYPE_HDR;
if ( !bCreated )
return;
/* before objects can be counted, the segment types
* SEGTYPE_CDATA ( for readonly segments ) &
* SEGTYPE_RSRC ( for resource segments )
* SEGTYPE_RELOC ( for relocations )
* must be set - also, init lname_idx field
*/
for( curr = SymTables[TAB_SEG].head; curr; curr = curr->next ) {
curr->e.seginfo->lname_idx = SEGTYPE_ERROR; /* use the highest index possible */
if ( curr->e.seginfo->segtype == SEGTYPE_DATA ) {
if ( curr->e.seginfo->readonly || curr->e.seginfo->characteristics == CHAR_READONLY )
curr->e.seginfo->segtype = SEGTYPE_CDATA;
else if ( curr->e.seginfo->clsym && strcmp( curr->e.seginfo->clsym->name, "CONST" ) == 0 )
curr->e.seginfo->segtype = SEGTYPE_CDATA;
} else if ( curr->e.seginfo->segtype == SEGTYPE_UNDEF ) {
if ( ( memcmp( curr->sym.name, ".rsrc", 5 ) == 0 ) &&
( *(curr->sym.name+5) == NULLC || *(curr->sym.name+5) == '$' ) )
curr->e.seginfo->segtype = SEGTYPE_RSRC;
else if ( strcmp( curr->sym.name, ".reloc" ) == 0 )
curr->e.seginfo->segtype = SEGTYPE_RELOC;
}
}
/* count objects ( without header types ) */
for ( i = 1, objs = 0; i < SIZE_PEFLAT; i++ ) {
DebugMsg(("pe_create_section_table: searching type %u\n", flat_order[i] ));
for( curr = SymTables[TAB_SEG].head; curr; curr = curr->next ) {
DebugMsg(("pe_create_section_table: section %s, type=%u, size=%X\n", curr->sym.name, curr->e.seginfo->segtype, curr->sym.max_offset ));
if ( curr->e.seginfo->segtype != flat_order[i] )
continue;
if ( curr->sym.max_offset ) {
DebugMsg(("pe_create_section_table: %s, type=%u is object %u\n", curr->sym.name, curr->e.seginfo->segtype, objs ));
objs++;
break;
}
}
}
if ( objs ) {
DebugMsg(("pe_create_section_table: items in object table: %u\n", objs ));
objtab->sym.max_offset = sizeof(struct IMAGE_SECTION_HEADER) * objs;
/* alloc space for 1 more section (.reloc) */
objtab->e.seginfo->CodeBuffer = LclAlloc( objtab->sym.max_offset + sizeof(struct IMAGE_SECTION_HEADER) );
}
}
}
/*
struct IMAGE_EXPORT_DIRECTORY {
uint_32 Characteristics;
uint_32 TimeDateStamp;
uint_16 MajorVersion;
uint_16 MinorVersion;
uint_32 Name; // RVA name of dll
uint_32 Base; // ordinal base
uint_32 NumberOfFunctions;
uint_32 NumberOfNames;
uint_32 AddressOfFunctions; // RVA of function table (array of RVAs)
uint_32 AddressOfNames; // RVA of function names (array of RVAs)
uint_32 AddressOfNameOrdinals; // RVA (array of shorts)
};
*/
struct expitem {
char *name;
unsigned idx;
};
static int compare_exp( const void *p1, const void *p2 )
/*******************************************************/
{
return( strcmp( ((struct expitem *)p1)->name, ((struct expitem *)p2)->name ) );
}
static void pe_emit_export_data( void )
/*************************************/
{
struct dsym *curr;
int_32 timedate;
int cnt;
int i;
char *name;
char *fname;
struct expitem *pitems;
struct expitem *pexp;
DebugMsg(("pe_emit_export_data enter\n" ));
for( curr = SymTables[TAB_PROC].head, cnt = 0; curr; curr = curr->nextproc ) {
if( curr->e.procinfo->isexport )
cnt++;
}
if ( cnt ) {
name = ModuleInfo.name;
AddLineQueueX( "%r DOTNAME", T_OPTION );
/* create .edata segment */
AddLineQueueX( "%s %r %r %s", edataname, T_SEGMENT, T_DWORD, edataattr );
#if 0 //def __UNIX__
time( &timedate );
#else
time( (time_t *)&timedate );
#endif
/* create export directory: Characteristics, Timedate, MajMin, Name, Base, ... */
AddLineQueueX( "DD 0, 0%xh, 0, %r @%s_name, %u, %u, %u, %r @%s_func, %r @%s_names, %r @%s_nameord",
timedate, T_IMAGEREL, name, 1, cnt, cnt, T_IMAGEREL, name, T_IMAGEREL, name, T_IMAGEREL, name );
/* the name pointer table must be in ascending order!
* so we have to fill an array of exports and sort it.
*/
pitems = (struct expitem *)myalloca( cnt * sizeof( struct expitem ) );
for( curr = SymTables[TAB_PROC].head, pexp = pitems, i = 0; curr; curr = curr->nextproc ) {
if( curr->e.procinfo->isexport ) {
pexp->name = curr->sym.name;
pexp->idx = i++;
pexp++;
}
}
qsort( pitems, cnt, sizeof( struct expitem ), compare_exp );
/* emit export address table.
* would be possible to just use the array of sorted names,
* but we want to emit the EAT being sorted by address.
*/
AddLineQueueX( "@%s_func %r DWORD", name, T_LABEL );
for( curr = SymTables[TAB_PROC].head; curr; curr = curr->nextproc ) {
if( curr->e.procinfo->isexport )
AddLineQueueX( "DD %r %s", T_IMAGEREL, curr->sym.name );
}
/* emit the name pointer table */
AddLineQueueX( "@%s_names %r DWORD", name, T_LABEL );
for ( i = 0; i < cnt; i++ )
AddLineQueueX( "DD %r @%s", T_IMAGEREL, (pitems+i)->name );
/* ordinal table. each ordinal is an index into the export address table */
AddLineQueueX( "@%s_nameord %r WORD", name, T_LABEL );
for( i = 0; i < cnt; i++ ) {
AddLineQueueX( "DW %u", (pitems+i)->idx );
}
/* v2.10: name+ext of dll */
//AddLineQueueX( "@%s_name DB '%s',0", name, name );
for ( fname = CurrFName[OBJ] + strlen( CurrFName[OBJ] ); fname > CurrFName[OBJ]; fname-- )
if ( *fname == '/' || *fname == '\\' || *fname == ':' )
break;
AddLineQueueX( "@%s_name DB '%s',0", name, fname );
for( curr = SymTables[TAB_PROC].head; curr; curr = curr->nextproc ) {
if( curr->e.procinfo->isexport ) {
Mangle( &curr->sym, StringBufferEnd );
AddLineQueueX( "@%s DB '%s',0", curr->sym.name, Options.no_export_decoration ? curr->sym.name : StringBufferEnd );
}
}
/* exit .edata segment */
AddLineQueueX( "%s %r", edataname, T_ENDS );
RunLineQueue();
}
}
/* write import data.
* convention:
* .idata$2: import directory
* .idata$3: final import directory NULL entry
* .idata$4: ILT entry
* .idata$5: IAT entry
* .idata$6: strings
*/
static void pe_emit_import_data( void )
/*************************************/
{
struct dll_desc *p;
int type = 0;
#if AMD64_SUPPORT
int ptrtype = ( ModuleInfo.defOfssize == USE64 ? T_QWORD : T_DWORD );
char *align = ( ModuleInfo.defOfssize == USE64 ? "ALIGN(8)" : "ALIGN(4)" );
#else
int ptrtype = T_DWORD;
char *align = "DWORD";
#endif