en:docs:tk:formats:newexe

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en:docs:tk:formats:newexe [2024/09/25 03:13] – prokusheven:docs:tk:formats:newexe [2024/10/13 14:35] (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.
 +
 ^ Offset ^ Size ^ Name ^ Description ^ ^ Offset ^ Size ^ Name ^ Description ^
 | 00h | WORD | ne_magic | Signature word NEMAGIC | | 00h | WORD | ne_magic | Signature word NEMAGIC |
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 | 0Ah | WORD | fileinfo | Near ptr to file info (OFSTRUCT) | | 0Ah | WORD | fileinfo | Near ptr to file info (OFSTRUCT) |
 | 0Ch | WORD | ne_flags | Flag word | | 0Ch | WORD | ne_flags | Flag word |
-| 0Eh | WORD | ne_autodata Segment number of automatic data segment. This value is set to zero if SINGLEDATA and MULTIPLEDATA flag bits are clear, NOAUTODATA is indicated in the flags word. A Segment number is an index into the module's segment table. The first entry in the segment table is segment number 1 |+| 0Eh | WORD | ne_autodata | Segment number of automatic data segment. This value is set to zero if SINGLEDATA and MULTIPLEDATA flag bits are clear, NOAUTODATA is indicated in the flags word. A Segment number is an index into the module's segment table. The first entry in the segment table is segment number 1 |
 | 10h | WORD | ne_heap | Initial size, in bytes, of dynamic heap added to the data segment. This value is zero if no initial local heap is allocated | | 10h | WORD | ne_heap | Initial size, in bytes, of dynamic heap added to the data segment. This value is zero if no initial local heap is allocated |
 | 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 |
- DWORD            ne_sssp; /* Segment number:offset of SS:SP. +| 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 | 
-    If SS equals the automatic data segment and SP equals +| 1Ch | WORD | ne_cseg | Number of entries in the Segment Table | 
-    zero, the stack pointer is set to the top of the +| 1Eh | WORD | ne_cmod | Number of entries in the Module Reference Table | 
-    automatic data segment just below the additional heap +| 20h | WORD | ne_cbnrestab | Number of bytes in the Non-Resident Name Table | 
-    area. +| 22h | WORD | ne_segtab | Segment Table file offset, relative to the beginning of the segmented EXE header | 
- +| 24h | WORD | ne_rsrctab | Resource Table file offset, relative to the beginning of the segmented EXE header | 
-    +--------------------------+ +| 26h | WORD | ne_restab | Resident Name Table file offset, relative to the beginning of the segmented EXE header | 
-    | additional dynamic heap  | +| 28h | WORD | ne_modtab | Module Reference Table file offset, relative to the beginning of the segmented EXE header | 
-    +--------------------------+ <- SP +| 2Ah | WORD | ne_imptab | Imported Names Table file offset, relative to the beginning of the segmented EXE header | 
-    |    additional stack      | +| 2Ch | DWORD | ne_nrestab | Non-Resident Name Table offset, relative to the beginning of the file | 
-    +--------------------------+ +| 30h | WORD | ne_cmovent | Number of movable entries in the Entry Table | 
-    | loaded auto data segment | +| 32h | WORD | ne_align | Logical sector alignment shift count, log(base 2) of the segment sector size (default 9) | 
-    +--------------------------+ <- DS, SS */ +| 34h | WORD | ne_cres | Number of resource entries | 
-    WORD  ne_cseg; /* Number of entries in the Segment Table */ +| 36h | BYTE | ne_exetyp | Executable type, used by loader. 02h = WINDOWS | 
-    WORD  ne_cmod; /* Number of entries in the Module Reference Table */ +| 37h | BYTE | ne_flagsothers | Operating system flags | 
-    WORD  ne_cbnrestab; /* Number of bytes in the Non-Resident Name Table */ +| 38h | WORD | ??? | offset to return thunks or start of gangload area | 
-    WORD  ne_segtab; /* Segment Table file offset, relative to the beginning +| 3Ah | WORD | ??? | offset to segment reference thunks or length of gangload area | 
-    of the segmented EXE header */ +| 3Ch | WORD | ??? | minimum code swap area size | 
-    WORD  ne_rsrctab; /* Resource Table file offset, relative to the beginning +| 3Eh | 2 BYTEs | ??? | expected Windows version (minor version first) |
-    of the segmented EXE header */ +
- WORD  ne_restab; /* Resident Name Table file offset, relative to the +
-    beginning of the segmented EXE header */ +
-    WORD  ne_modtab; /* Module Reference Table file offset, relative to the +
-    beginning of the segmented EXE header */ +
-    WORD  ne_imptab; /* Imported Names Table file offset, relative to the +
-    beginning of the segmented EXE header */ +
-    DWORD ne_nrestab; /* Non-Resident Name Table offset, relative to the +
-    beginning of the file */ +
-    WORD ne_cmovent; /* Number of movable entries in the Entry Table */ +
-    WORD ne_align; /* Logical sector alignment shift count, log(base 2) of +
-    the segment sector size (default 9) */ +
-    WORD ne_cres; /* Number of resource entries */ +
-    BYTE ne_exetyp; /* Executable type, used by loader. +
-    02h = WINDOWS */ +
-    BYTE ne_flagsothers; /* Operating system flags */ +
-    char ne_res[NERESBYTES]; /* Reserved */  +
-};+
  
 On-disk segment entry On-disk segment entry
Line 90: Line 76:
 }; };
  
-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 | ??? | 
 +| 06h | WORD | rn_id | ??? | 
 +| 08h | WORD | rn_handle | ??? | 
 +| 0Ah | WORD | rn_usage | ??? |
  
-#define RN_OFFSET(x)    (x).rn_offset +^ Offset ^ Size ^ Name ^ Description ^ 
-#define RN_LENGTH(x)    (x).rn_length +| 00h | WORD | rs_align | ??? | 
-#define RN_FLAGS(x)     (x).rn_flags +| 02h | struct rsrc_typeinfo | rs_typeinfo | ??? |
-#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; 
-};