cvexefmt.h

CC386 is a general-purpose 32-bit C compiler. It is not an optimizing compiler but given that the co

    unsigned short  Seg;            // linker segment index
    unsigned short  cLnOff;         // count of line/offset pairs
    unsigned long   offset[1];      // array of offsets in segment
    unsigned short  lineNbr[1];     // array of line lumber in source
} OMFSourceLine;

typedef OMFSourceLine FAR * LPSL;


//  Source file description
//  This table is generated by the linker


typedef struct OMFSourceFile {
    unsigned short  cSeg;           // number of segments from source file
    unsigned short  reserved;       // reserved
    unsigned long   baseSrcLn[1];   // base of OMFSourceLine tables
                                    // this array is followed by array
                                    // of segment start/end pairs followed by
                                    // an array of linker indices
                                    // for each segment in the file
    unsigned short  cFName;         // length of source file name
    char            Name;           // name of file padded to long boundary
} OMFSourceFile;

typedef OMFSourceFile FAR * LPSF;


//  Source line to address mapping header structure
//  This structure describes the number and location of the
//  OMFAddrLine tables for a module.  The offSrcLine entries are
//  relative to the beginning of this structure.


typedef struct OMFSourceModule {
    unsigned short  cFile;          // number of OMFSourceTables
    unsigned short  cSeg;           // number of segments in module
    unsigned long   baseSrcFile[1]; // base of OMFSourceFile table
                                    // this array is followed by array
                                    // of segment start/end pairs followed
                                    // by an array of linker indices
                                    // for each segment in the module
} OMFSourceModule;

typedef OMFSourceModule FAR * LPSM;

//  sstLibraries

typedef struct OMFLibrary {
    unsigned char   cbLibs;     // count of library names
    char            Libs[1];    // array of length prefixed lib names (first entry zero length)
} OMFLibrary;


// sstFileIndex - An index of all of the files contributing to an
//  executable.

typedef struct OMFFileIndex {
    unsigned short  cmodules;       // Number of modules
    unsigned short  cfilerefs;      // Number of file references
    unsigned short  modulelist[1];  // Index to beginning of list of files
                                    // for module i. (0 for module w/o files)
    unsigned short  cfiles[1];      // Number of file names associated
                                    // with module i.
    unsigned long   ulNames[1];     // Offsets from the beginning of this
                                    // table to the file names
    char            Names[];        // The length prefixed names of files
} OMFFileIndex;


//  Offset mapping table
//  This table provides a mapping from logical to physical offsets.
//  This mapping is applied between the logical to physical mapping
//  described by the seg map table.

typedef struct OMFOffsetMap16 {
    unsigned long   csegment;       // Count of physical segments

    // The next six items are repeated for each segment

    unsigned long   crangeLog;      // Count of logical offset ranges
    unsigned short  rgoffLog[1];    // Array of logical offsets
    short           rgbiasLog[1];   // Array of logical->physical bias
    unsigned long   crangePhys;     // Count of physical offset ranges
    unsigned short  rgoffPhys[1];   // Array of physical offsets
    short           rgbiasPhys[1];  // Array of physical->logical bias
} OMFOffsetMap16;

typedef struct OMFOffsetMap32 {
    unsigned long   csection;       // Count of physical sections

    // The next six items are repeated for each section

    unsigned long   crangeLog;      // Count of logical offset ranges
    unsigned long   rgoffLog[1];    // Array of logical offsets
    long            rgbiasLog[1];   // Array of logical->physical bias
    unsigned long   crangePhys;     // Count of physical offset ranges
    unsigned long   rgoffPhys[1];   // Array of physical offsets
    long            rgbiasPhys[1];  // Array of physical->logical bias
} OMFOffsetMap32;

//  Pcode support.  This subsection contains debug information generated
//  by the MPC utility used to process Pcode executables.  Currently
//  it contains a mapping table from segment index (zero based) to
//  frame paragraph.  MPC converts segmented exe's to non-segmented
//  exe's for DOS support.  To avoid backpatching all CV info, this
//  table is provided for the mapping.  Additional info may be provided
//  in the future for profiler support.

typedef struct OMFMpcDebugInfo {
    unsigned short  cSeg;           // number of segments in module
    unsigned short  mpSegFrame[1];  // map seg (zero based) to frame
} OMFMpcDebugInfo;

//  The following structures and constants describe the format of the
//  CodeView Debug OMF for linkers that emit executables with the NB02
//  signature.  Current utilities with the exception of cvpack and cvdump
//  will not accept or emit executables with the NB02 signature.  Cvdump
//  will dump an unpacked executable with the NB02 signature.  Cvpack will
//  read an executable with the NB02 signature but the packed executable
//  will be written with the table format, contents and signature of NB08.


//  subsection type constants

#define SSTMODULE       0x101    // Basic info. about object module
#define SSTPUBLIC       0x102    // Public symbols
#define SSTTYPES        0x103    // Type information
#define SSTSYMBOLS      0x104    // Symbol Data
#define SSTSRCLINES     0x105    // Source line information
#define SSTLIBRARIES    0x106    // Names of all library files used
#define SSTIMPORTS      0x107    // Symbols for DLL fixups
#define SSTCOMPACTED    0x108    // Compacted types section
#define SSTSRCLNSEG     0x109    // Same as source lines, contains segment


typedef struct DirEntry{
    unsigned short  SubSectionType;
    unsigned short  ModuleIndex;
    long            lfoStart;
    unsigned short  Size;
} DirEntry;


//  information decribing each segment in a module

typedef struct oldnsg {
    unsigned short  Seg;         // segment index
    unsigned short  Off;         // offset of code in segment
    unsigned short  cbSeg;       // number of bytes in segment
} oldnsg;


//  old subsection module information

typedef struct oldsmd {
    oldnsg          SegInfo;     // describes first segment in module
    unsigned short  ovlNbr;      // overlay number
    unsigned short  iLib;
    unsigned char   cSeg;        // Number of segments in module
    char            reserved;
    unsigned char   cbName[1];   // length prefixed name of module
    oldnsg          arnsg[];     // cSeg-1 structures exist for alloc text or comdat code
} oldsmd;

typedef struct{
    unsigned short  Seg;
    unsigned long   Off;
    unsigned long   cbSeg;
} oldnsg32;

typedef struct {
    oldnsg32        SegInfo;     // describes first segment in module
    unsigned short  ovlNbr;      // overlay number
    unsigned short  iLib;
    unsigned char   cSeg;        // Number of segments in module
    char            reserved;
    unsigned char   cbName[1];   // length prefixed name of module
    oldnsg32        arnsg[];     // cSeg-1 structures exist for alloc text or comdat code
} oldsmd32;

// OMFSegMap - This table contains the mapping between the logical segment indices
// used in the symbol table and the physical segments where the program is loaded

typedef struct OMFSegMapDesc {
    unsigned short  flags;       // descriptor flags bit field.
    unsigned short  ovl;         // the logical overlay number
    unsigned short  group;       // group index into the descriptor array
    unsigned short  frame;       // logical segment index - interpreted via flags
    unsigned short  iSegName;    // segment or group name - index into sstSegName
    unsigned short  iClassName;  // class name - index into sstSegName
    unsigned long   offset;      // byte offset of the logical within the physical segment
    unsigned long   cbSeg;       // byte count of the logical segment or group
} OMFSegMapDesc;

typedef struct OMFSegMap {
    unsigned short  cSeg;        // total number of segment descriptors
    unsigned short  cSegLog;     // number of logical segment descriptors
    OMFSegMapDesc   rgDesc[1];   // array of segment descriptors
} OMFSegMap;

#ifdef __CCDL__
#pragma pack(0)
#endif