en:docs:tk:formats:newexe

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en:docs:tk:formats:newexe [2024/09/25 05:04] – prokusheven:docs:tk:formats:newexe [2026/05/15 03:41] (current) – prokushev
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 +====== New Executable file format ======
 +
 +New Executable (NE) file format used by set of operating system including OS/2, Windows, Multitasking MS-DOS 4 and set of DOS Extenders. It is designed to be store on disk and in-memory usage. In-disk format is same for all OSes, but In-memory usage is mostly specific for Windows systems.
 +
 +===== New Executable header =====
 +
 ^ Offset ^ Size ^ Name ^ Description ^ ^ Offset ^ Size ^ Name ^ Description ^
-| 00h | WORD | ne_magic | Signature word NEMAGIC |+| 00h | WORD | ne_magic | Signature word NEMAGIC (0x4E45, 'NE') |
 | On-disk |||| | On-disk ||||
 | 02h | BYTE | ne_ver | Version number of the linker | | 02h | BYTE | ne_ver | Version number of the linker |
-| 03h | BYTE| ne_rev | Revision number of the linker | +| 03h | BYTE | ne_rev | Revision number of the linker | 
-| In-memory |||| +| In-memory (Windows) |||| 
-| 02h | WORD | count | Usage count (ne_ver/ne_rev on disk) |+| 02h | WORD | count | Usage count  |
 | 04h | WORD | ne_enttab | Entry Table file offset, relative to the beginning of the segmented EXE header | | 04h | WORD | ne_enttab | Entry Table file offset, relative to the beginning of the segmented EXE header |
 | On-disk |||| | On-disk ||||
 | 06h | WORD | ne_cbenttab | Number of bytes in the entry table | | 06h | WORD | ne_cbenttab | Number of bytes in the entry table |
-| In-memory ||||+| In-memory (Windows) ||||
 | 06h | WORD | next | Selector to next module | | 06h | WORD | next | Selector to next module |
 | On-disk |||| | On-disk ||||
 | 08h | DWORD | ne_crc | 32-bit CRC of entire contents of file. These words are taken as 00 during the calculation | | 08h | DWORD | ne_crc | 32-bit CRC of entire contents of file. These words are taken as 00 during the calculation |
-| In-memory ||||    +| In-memory (Windows) ||||    
 | 08h | WORD | dgroup_entry | Near ptr to segment entry for DGROUP | | 08h | WORD | dgroup_entry | Near ptr to segment entry for DGROUP |
 | 0Ah | WORD | fileinfo | Near ptr to file info (OFSTRUCT) | | 0Ah | WORD | fileinfo | Near ptr to file info (OFSTRUCT) |
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 | 12h | WORD | ne_stack | Initial size, in bytes, of stack added to the data segment. This value is zero to indicate no initial stack allocation, or when SS is not equal to DS | | 12h | WORD | ne_stack | Initial size, in bytes, of stack added to the data segment. This value is zero to indicate no initial stack allocation, or when SS is not equal to DS |
 | 14h | DWORD | ne_csip | Segment number:offset of CS:IP | | 14h | DWORD | ne_csip | Segment number:offset of CS:IP |
-| 18h | DWORD | ne_sssp | Segment number:offset of SS:SP \\ If SS equals the automatic data segment and SP equals zero, the stack pointer is set to the top of the automatic data segment just below the additional heap area. \\ +--------------------------+\\ ! additional dynamic heap  !\\ +--------------------------+ <- SP\\ !    additional stack      !\\ +--------------------------+\\ ! loaded auto data segment !%\\ +--------------------------+ <- DS, SS |+| 18h | DWORD | ne_sssp | Segment number:offset of SS:SP \\ If SS equals the automatic data segment and SP equals zero, the stack pointer is set to the top of the automatic data segment just below the additional heap area. \\ <code>+--------------------------+ 
 +! additional dynamic heap  ! 
 ++--------------------------+ <- SP 
 +!    additional stack      ! 
 ++--------------------------+ 
 +! loaded auto data segment ! 
 ++--------------------------+ <- DS, SS </code> |
 | 1Ch | WORD | ne_cseg | Number of entries in the Segment Table | | 1Ch | WORD | ne_cseg | Number of entries in the Segment Table |
 | 1Eh | WORD | ne_cmod | Number of entries in the Module Reference Table | | 1Eh | WORD | ne_cmod | Number of entries in the Module Reference Table |
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 | 32h | WORD | ne_align | Logical sector alignment shift count, log(base 2) of the segment sector size (default 9) | | 32h | WORD | ne_align | Logical sector alignment shift count, log(base 2) of the segment sector size (default 9) |
 | 34h | WORD | ne_cres | Number of resource entries | | 34h | WORD | ne_cres | Number of resource entries |
-| 36h | BYTE | ne_exetyp | Executable type, used by loader. 02h = WINDOWS |+| 36h | BYTE | ne_exetyp | Executable type, used by loader. \\ 00h=Unknown (any “new‑format” OS) \\ 01h=OS/2 \\ 02h=Windows \\ 03h=European MS‑DOS 4.x \\ 04h=Windows 386 \\ 05h=BOSS (Borland Operating System Services) \\ 81h=PharLap 286<nowiki>|</nowiki>DOS-Extender, OS/2 \\ 82h=PharLap 286<nowiki>|</nowiki>DOS-Extender, Windows |
 | 37h | BYTE | ne_flagsothers | Operating system flags | | 37h | BYTE | ne_flagsothers | Operating system flags |
-| 38h | WORD | ??? | offset to return thunks or start of gangload area | +| 38h | WORD | ??? | offset to return thunks or start of gangload/fastload area | 
-| 3Ah | WORD | ??? | offset to segment reference thunks or length of gangload area | +| 3Ah | WORD | ??? | offset to segment reference thunks or length of gangload/fastload area (Windows) | 
-| 3Ch | WORD | ??? | minimum code swap area size | +| 3Ch | WORD | ??? | minimum code swap area size (Windows) | 
-| 3Eh | 2 BYTEs | ??? | expected Windows version (minor version first) |+| 3Eh | 2 BYTEs | ??? | expected Windows version (minor version first) (Windows)| 
 + 
 +===== Flag word (ne_flags) ===== 
 +^ Bit(s) ^ Mask ^ Name ^ Description ^ 
 +| 0-1 | - | NOAUTODATA | No an automatic data segment | 
 +| 0 | 0001h | SINGLEDATA | Per-process library data (shared DGROUP) | 
 +| 1 | 0002h | MULTIPLEDATA | Per-instance library data | 
 +| 8 | 0100h | NENOTWINCOMPAT | Not compatible with PM Windowing (full screen only) (OS/2) | 
 +| 9 | 0200h | NEWINCOMPAT | Compatible with PM Windowing (OS/2) | 
 +| 10 | 0300h | NEWINAPI | Uses PM Windowing API (OS/2) | 
 +| 11 | 0800H | FIRSTDISC/NEBOUND | First segment in the executable file contains code that loads the application (Windows). Bound Family API (OS/2) | 
 +| 13 | 2000h | LINKERROR | Errors detected at link time, module will not load | 
 +| 14 | 4000h | NENOTMPSAFE | Non-conforming program (valid stack is not maintained) (Windows) Process is not multi‑processor safe (OS/2) | 
 +| 15 | 8000h | LIBRARY | Module is a dynamic‑link library (DLL) | 
 + 
 +===== Operating system flags (ne_flagsothers) ===== 
 +^ Bit ^ Mask ^ Name ^ Description ^ 
 +| 0 | 01h | NELONGNAMES | Supports long file names (OS/2) | 
 +| 1 | 02h | NEWINISPROT | Windows 2.x app runs in protected mode (Windows) | 
 +| 2 | 04h | NEWINGETPROPFON | Windows 2.x app gets proportional font (Windows) | 
 +| 3 | 08h | NEGANGLOAD | Contains gangload/fastload area (Windows) | 
 +| 7 | 80h | NEWLOAPPL | WLO application on OS/2 (markwlo.exe) (OS/2) |
  
 On-disk segment entry On-disk segment entry
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 | 06h | WORD | ns_minalloc | Minimum allocation size of the segment, in bytes. Total size of the segment. Zero means 64K | | 06h | WORD | ns_minalloc | Minimum allocation size of the segment, in bytes. Total size of the segment. Zero means 64K |
  
-In-memory segment entry+In-memory (Windows) segment entry
  
 ^ Offset ^ Size ^ Name ^ Description ^ ^ Offset ^ Size ^ Name ^ Description ^
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 | 08h | WORD | ns1_handle | Selector or handle (selector - 1) of segment in memory | | 08h | WORD | ns1_handle | Selector or handle (selector - 1) of segment in memory |
  
 +<code c>
 struct new_segdata { struct new_segdata {
     union {     union {
Line 71: Line 104:
     } ns_union;     } ns_union;
 }; };
 +</code>
  
-struct new_rlcinfo { +Relocation table header
-    WORD  nr_nreloc; +
-};+
  
-struct new_rlc { +^ Offset ^ Size ^ Name ^ Description ^ 
-    char            nr_stype; +| 00h | WORD | nr_nreloc | Number of relocation table entries |
-    char            nr_flags; +
-    WORD  nr_soff; +
-    union { +
-        struct { +
-            char            nr_segno; +
-            char            nr_res; +
-            WORD  nr_entry; +
-          } nr_intref; +
-        struct { +
-            WORD  nr_mod; +
-            WORD  nr_proc; +
-          } nr_import; +
-        struct { +
-            WORD  nr_ostype; +
-            WORD  nr_osres; +
-          } nr_osfix; +
-      } nr_union; +
-};+
  
-#define NR_STYPE(x)     (x).nr_stype +Relocation table entry
-#define NR_FLAGS(x)     (x).nr_flags +
-#define NR_SOFF(x)      (x).nr_soff +
-#define NR_SEGNO(x)     (x).nr_union.nr_intref.nr_segno +
-#define NR_RES(x)       (x).nr_union.nr_intref.nr_res +
-#define NR_ENTRY(x)     (x).nr_union.nr_intref.nr_entry +
-#define NR_MOD(x)       (x).nr_union.nr_import.nr_mod +
-#define NR_PROC(x)      (x).nr_union.nr_import.nr_proc +
-#define NR_OSTYPE(x)    (x).nr_union.nr_osfix.nr_ostype +
-#define NR_OSRES(x)     (x).nr_union.nr_osfix.nr_osres+
  
-#define NRSTYP      0x0f +^ Offset ^ Size ^ Name ^ Description ^ 
-#define NRSBYT      0x00 +| 00h | char | nr_stype | Source type (0Fh = NRSTYP - source mask): 00h = LOBYTE, 02h = SEGMENT, 03h = FAR_ADDR (32-bit pointer), 05h = OFFSET (16-bit offset) | 
-#define NRSSEG      0x02 +| 01h | char | nr_flags | Flags byte (03h = TARGET_MASK): 00h = INTERNALREF, 01h = IMPORTORDINAL, 02h = IMPORTNAME, 03h = OSFIXUP, 04h = ADDITIVE | 
-#define NRSPTR      0x03 +| 02h | WORD | nr_soff | Offset within this segment of the source chain. If the ADDITIVE flag is set, then target value is added to the source contents, instead of replacing the source and following the chain. The source chain is an 0FFFFh terminated linked list within this segment of all references to the target | 
-#define NRSOFF      0x05 +| Internal fixup |||| 
-#define NRPTR48     0x06 +| 04h | char | nr_segno | Segment number (for fixed segment) or 0FFh (for movable segment) | 
-#define NROFF32     0x07 +| 05h | char | nr_res | Reserved (usually zero) | 
-#define NRSOFF32    0x08+| 06h | WORD | nr_entry | Entry table number (for movable segment) offset segment | 
 +| Import |||| 
 +| 04h | WORD | nr_mod | ??? | 
 +| 06h | WORD | nr_proc | ??? | 
 +| OS Fixup |||| 
 +| 04h | WORD | nr_ostype | ??? | 
 +| 06h | WORD | nr_osres | ??? |
  
-#define NRADD       0x04 
-#define NRRTYP      0x03 
-#define NRRINT      0x00 
-#define NRRORD      0x01 
-#define NRRNAM      0x02 
-#define NRROSF      0x03 
-#define NRICHAIN    0x08 
  
-#if (EXE386 == 0)+^ Offset ^ Size ^ Name ^ Description ^ 
 +| 00h | char | rs_len | ??? | 
 +| 01h | char | rs_string[1] | ??? |
  
-#define RS_LEN(x)       (x).rs_len +^ Offset ^ Size ^ Name ^ Description ^ 
-#define RS_STRING(x)    (x).rs_string +| 00h | WORD | rt_id | ??? | 
-#define RS_ALIGN(x)     (x).rs_align+| 02h | WORD | rt_nres | ??? | 
 +| 04h | DWORD | rt_proc | ??? |
  
-#define RT_ID(x)        (x).rt_id +^ Offset ^ Size ^ Name ^ Description ^ 
-#define RT_NRES(x)      (x).rt_nres +| 00h | WORD | rn_offset | ??? | 
-#define RT_PROC(x)      (x).rt_proc +| 02h | WORD | rn_length | ??? | 
- +| 04h | WORD | rn_flags | ??? | 
-#define RN_OFFSET(x)    (x).rn_offset +| 06h | WORD | rn_id | ??? | 
-#define RN_LENGTH(x)    (x).rn_length +| 08h | WORD | rn_handle | ??? | 
-#define RN_FLAGS(x)     (x).rn_flags +| 0Ah | WORD | rn_usage | ??? |
-#define RN_ID(x)        (x).rn_id +
-#define RN_HANDLE(x)    (x).rn_handle +
-#define RN_USAGE(x)     (x).rn_usage +
- +
-#define RSORDID     0x8000 +
- +
-#define RNMOVE      0x0010 +
-#define RNPURE      0x0020 +
-#define RNPRELOAD   0x0040 +
-#define RNDISCARD   0xF000 +
- +
-#define NE_FFLAGS_LIBMODULE 0x8000 +
- +
-struct rsrc_string { +
-    char    rs_len; +
-    char    rs_string[1]; +
-}; +
- +
-struct rsrc_typeinfo { +
-    WORD  rt_id; +
-    WORD  rt_nres; +
-    DWORD            rt_proc; +
-}; +
- +
-struct rsrc_nameinfo { +
-    WORD  rn_offset; +
-    WORD  rn_length; +
-    WORD  rn_flags; +
-    WORD  rn_id; +
-    WORD  rn_handle; +
-    WORD  rn_usage; +
-}; +
- +
-struct new_rsrc { +
-    WORD          rs_align; +
-    struct rsrc_typeinfo    rs_typeinfo; +
-};+
  
 +^ Offset ^ Size ^ Name ^ Description ^
 +| 00h | WORD | rs_align | ??? |
 +| 02h | struct rsrc_typeinfo | rs_typeinfo | ??? |
  
  
 +  * Microsoft KB: Q65122: Executable-File Header Format
 +  * Windows SDK 3.1 (MSDN Library, September 1992)