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| en:docs:tk:formats:newexe [2024/10/13 14:35] – prokushev | en:docs:tk:formats:newexe [2026/05/14 05:21] (current) – prokushev | ||
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| 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 (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 |
| | 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 |||| | ||
| - | | 02h | WORD | count | Usage count (ne_ver/ | + | | 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 |||| | ||
| Line 44: | Line 46: | ||
| | 3Ch | WORD | ??? | minimum code swap area size | | | 3Ch | WORD | ??? | minimum code swap area size | | ||
| | 3Eh | 2 BYTEs | ??? | expected Windows version (minor version first) | | | 3Eh | 2 BYTEs | ??? | expected Windows version (minor version first) | | ||
| + | |||
| + | ===== 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 | | ||
| + | | 11 | 0800H | FIRSTDISC(? | ||
| + | | 13 | 2000h | LINKERROR | Errors detected at link time, module will not load | | ||
| + | | 15 | 8000h | LIBRARY | Module is a dynamic‑link library (DLL) | | ||
| On-disk segment entry | On-disk segment entry | ||
| Line 62: | Line 73: | ||
| | 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 75: | Line 86: | ||
| } ns_union; | } ns_union; | ||
| }; | }; | ||
| + | </ | ||
| Relocation table header | Relocation table header | ||
| Line 121: | Line 133: | ||
| - | + | * Microsoft KB: Q65122: Executable-File Header Format | |
| + | * Windows SDK 3.1 (MSDN Library, September 1992) | ||