R:/sourcemod/trunk/sourcepawn/include/sp_file_headers.h

#ifndef _INCLUDE_SPFILE_HEADERS_H
#define _INCLUDE_SPFILE_HEADERS_H

#include <stddef.h>
#if defined __GNUC__ || defined HAVE_STDINT_
#include <stdint.h>
#else
 #if !defined HAVE_STDINT_H
        typedef unsigned __int64        uint64_t;
        typedef __int64                         int64_t;
        typedef unsigned __int32        uint32_t;
        typedef __int32                         int32_t;
        typedef unsigned __int16        uint16_t;
        typedef __int16                         int16_t;
        typedef unsigned __int8         uint8_t;
        typedef __int8                          int8_t;
 #define HAVE_STDINT_H
 #endif
#endif

#define SPFILE_MAGIC    0x53504646              /* Source Pawn File Format (SPFF) */
//#define SPFILE_VERSION        0x0100
#define SPFILE_VERSION  0x0101                  /* Uncompressed bytecode */

//:TODO: better compiler/nix support
#if defined __linux__
        #pragma pack(1)         /* structures must be packed (byte-aligned) */
#else
        #pragma pack(push)
        #pragma pack(1)         /* structures must be packed (byte-aligned) */
#endif

#define SPFILE_COMPRESSION_NONE         0
#define SPFILE_COMPRESSION_GZ           1

typedef struct sp_file_section_s
{
        uint32_t        nameoffs;       /* rel offset into global string table */
        uint32_t        dataoffs;
        uint32_t        size;
} sp_file_section_t;

typedef struct sp_file_hdr_s
{
        uint32_t        magic;          /* magic number */
        uint16_t        version;        /* version code */
        uint8_t         compression;/* compression algorithm */
        uint32_t        disksize;       /* size on disk */
        uint32_t        imagesize;      /* size in memory */
        uint8_t         sections;       /* number of sections */
        uint32_t        stringtab;      /* offset to string table */
        uint32_t        dataoffs;       /* offset to file proper (any compression starts here) */
} sp_file_hdr_t;

#define SP_FLAG_DEBUG   (1<<0)

/* section is ".code" */
typedef struct sp_file_code_s
{
        uint32_t        codesize;               /* codesize in bytes */
        uint8_t         cellsize;               /* cellsize in bytes */
        uint8_t         codeversion;    /* version of opcodes supported */
        uint16_t        flags;                  /* flags */
        uint32_t        main;                   /* address to "main" if any */
        uint32_t        code;                   /* rel offset to code */
} sp_file_code_t;

/* section is .data */
typedef struct sp_file_data_s
{
        uint32_t        datasize;               /* size of data section in memory */
        uint32_t        memsize;                /* total mem required (includes data) */
        uint32_t        data;                   /* file offset to data (helper) */
} sp_file_data_t;

/* section is .publics */
typedef struct sp_file_publics_s
{
        uint32_t        address;                /* address rel to code section */
        uint32_t        name;                   /* index into nametable */
} sp_file_publics_t;

/* section is .natives */
typedef struct sp_file_natives_s
{
        uint32_t        name;                   /* name of native at index */
} sp_file_natives_t;

/* section is .libraries */
typedef struct sp_file_libraries_s
{
        uint32_t        name;                   /* index into nametable */
} sp_file_libraries_t;

/* section is .pubvars */
typedef struct sp_file_pubvars_s
{
        uint32_t        address;                /* address rel to dat section */
        uint32_t        name;                   /* index into nametable */
} sp_file_pubvars_t;

#if defined __linux__
        #pragma pack()    /* reset default packing */
#else
        #pragma pack(pop) /* reset previous packing */
#endif

typedef struct sp_fdbg_info_s
{
        uint32_t        num_files;      /* number of files */
        uint32_t        num_lines;      /* number of lines */
        uint32_t        num_syms;       /* number of symbols */
        uint32_t        num_arrays;     /* number of symbols which are arrays */
} sp_fdbg_info_t;

typedef struct sp_fdbg_file_s
{
        uint32_t        addr;           /* address into code */
        uint32_t        name;           /* offset into debug nametable */
} sp_fdbg_file_t;

typedef struct sp_fdbg_line_s
{
        uint32_t        addr;           /* address into code */
        uint32_t        line;           /* line number */
} sp_fdbg_line_t;

#define SP_SYM_VARIABLE  1  /* cell that has an address and that can be fetched directly (lvalue) */
#define SP_SYM_REFERENCE 2  /* VARIABLE, but must be dereferenced */
#define SP_SYM_ARRAY     3
#define SP_SYM_REFARRAY  4  /* an array passed by reference (i.e. a pointer) */
#define SP_SYM_FUNCTION  9

typedef struct sp_fdbg_symbol_s
{
        int32_t         addr;           /* address rel to DAT or stack frame */
        int16_t         tagid;          /* tag id */
        uint32_t        codestart;      /* start scope validity in code */
        uint32_t        codeend;        /* end scope validity in code */
        uint8_t         ident;          /* variable type */
        uint8_t         vclass;         /* scope class (local vs global) */
        uint16_t        dimcount;       /* dimension count (for arrays) */
        uint32_t        name;           /* offset into debug nametable */
} sp_fdbg_symbol_t;

typedef struct sp_fdbg_arraydim_s
{
        int16_t         tagid;          /* tag id */
        uint32_t        size;           /* size of dimension */
} sp_fdbg_arraydim_t;

/* section is .names */
typedef char * sp_file_nametab_t;

#endif //_INCLUDE_SPFILE_HEADERS_H

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