/* Pawn Abstract Machine (for the Pawn language) * * Copyright (c) ITB CompuPhase, 1997-2005 * * This software is provided "as-is", without any express or implied warranty. * In no event will the authors be held liable for any damages arising from * the use of this software. * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. If you use this software in * a product, an acknowledgment in the product documentation would be * appreciated but is not required. * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. * 3. This notice may not be removed or altered from any source distribution. * * Version: $Id: amx.h 3736 2008-08-16 20:13:12Z damagedsoul $ */ #ifdef _MSC_VER // MSVC8 - replace POSIX functions with ISO C++ conformant ones as they are deprecated #if _MSC_VER >= 1400 #define access _access #define chdir _chdir #define stricmp _stricmp #endif #endif #if defined FREEBSD && !defined __FreeBSD__ #define __FreeBSD__ #endif #if defined LINUX || defined __FreeBSD__ || defined __OpenBSD__ #include #endif #ifndef AMX_H_INCLUDED #define AMX_H_INCLUDED #if defined HAVE_STDINT_H #include #else #if defined __LCC__ || defined __DMC__ || defined LINUX #if defined HAVE_INTTYPES_H #include #else #include #endif #elif !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L /* The ISO C99 defines the int16_t and int_32t types. If the compiler got * here, these types are probably undefined. */ #if defined __MACH__ #include typedef unsigned short int uint16_t; typedef unsigned long int uint32_t; #elif defined __FreeBSD__ #include #else typedef short int int16_t; typedef unsigned short int uint16_t; #if defined SN_TARGET_PS2 typedef int int32_t; typedef unsigned int uint32_t; #else typedef long int int32_t; typedef unsigned long int uint32_t; #endif #if defined __WIN32__ || defined _WIN32 || defined WIN32 typedef __int64 int64_t; typedef unsigned __int64 uint64_t; #define HAVE_I64 #elif defined __GNUC__ typedef long long int64_t; typedef unsigned long long uint64_t; #define HAVE_I64 #endif #endif #endif #define HAVE_STDINT_H #endif #if defined _LP64 || defined WIN64 || defined _WIN64 #if !defined __64BIT__ #define __64BIT__ #endif #endif #if HAVE_ALLOCA_H #include #endif #if defined __WIN32__ || defined _WIN32 || defined WIN32 /* || defined __MSDOS__ */ #if !defined alloca #define alloca(n) _alloca(n) #endif #endif #if !defined arraysize #define arraysize(array) (sizeof(array) / sizeof((array)[0])) #endif #ifdef __cplusplus extern "C" { #endif #if defined PAWN_DLL #if !defined AMX_NATIVE_CALL #define AMX_NATIVE_CALL __stdcall #endif #if !defined AMXAPI #define AMXAPI __stdcall #endif #endif /* calling convention for native functions */ #if !defined AMX_NATIVE_CALL #define AMX_NATIVE_CALL #endif /* calling convention for all interface functions and callback functions */ #if !defined AMXAPI #if defined STDECL #define AMXAPI __stdcall #elif defined CDECL #define AMXAPI __cdecl #elif defined GCC_HASCLASSVISIBILITY #define AMXAPI __attribute__ ((visibility("default"))) #else #define AMXAPI #endif #endif #if !defined AMXEXPORT #define AMXEXPORT #endif /* File format version Required AMX version * 0 (original version) 0 * 1 (opcodes JUMP.pri, SWITCH and CASETBL) 1 * 2 (compressed files) 2 * 3 (public variables) 2 * 4 (opcodes SWAP.pri/alt and PUSHADDR) 4 * 5 (tagnames table) 4 * 6 (reformatted header) 6 * 7 (name table, opcodes SYMTAG & SYSREQ.D) 7 * 8 (opcode STMT, renewed debug interface) 8 */ #define CUR_FILE_VERSION 8 /* current file version; also the current AMX version */ #define MIN_FILE_VERSION 6 /* lowest supported file format version for the current AMX version */ #define MIN_AMX_VERSION 8 /* minimum AMX version needed to support the current file format */ #if !defined PAWN_CELL_SIZE #define PAWN_CELL_SIZE 32 /* by default, use 32-bit cells */ #endif #if PAWN_CELL_SIZE==16 typedef uint16_t ucell; typedef int16_t cell; #elif PAWN_CELL_SIZE==32 typedef uint32_t ucell; typedef int32_t cell; #elif PAWN_CELL_SIZE==64 typedef uint64_t ucell; typedef int64_t cell; #else #error Unsupported cell size (PAWN_CELL_SIZE) #endif #define UNPACKEDMAX ((1L << (sizeof(cell)-1)*8) - 1) #define UNLIMITED (~1u >> 1) struct tagAMX; typedef cell (AMX_NATIVE_CALL *AMX_NATIVE)(struct tagAMX *amx, cell *params); typedef int (AMXAPI *AMX_CALLBACK)(struct tagAMX *amx, cell index, cell *result, cell *params); typedef int (AMXAPI *AMX_DEBUG)(struct tagAMX *amx); #if !defined _FAR #define _FAR #endif #if defined _MSC_VER #pragma warning(disable:4103) /* disable warning message 4103 that complains * about pragma pack in a header file */ #pragma warning(disable:4100) /* "'%$S' : unreferenced formal parameter" */ #endif /* Some compilers do not support the #pragma align, which should be fine. Some * compilers give a warning on unknown #pragmas, which is not so fine... */ #if (defined SN_TARGET_PS2 || defined __GNUC__) && !defined AMX_NO_ALIGN #define AMX_NO_ALIGN #endif #if defined __GNUC__ #define PACKED __attribute__((packed)) #else #define PACKED #endif #if !defined AMX_NO_ALIGN #if defined LINUX || defined __FreeBSD__ #pragma pack(1) /* structures must be packed (byte-aligned) */ #elif defined MACOS && defined __MWERKS__ #pragma options align=mac68k #else #pragma pack(push) #pragma pack(1) /* structures must be packed (byte-aligned) */ #if defined __TURBOC__ #pragma option -a- /* "pack" pragma for older Borland compilers */ #endif #endif #endif typedef struct tagAMX_NATIVE_INFO { const char _FAR *name PACKED; AMX_NATIVE func PACKED; } PACKED AMX_NATIVE_INFO; #define AMX_USERNUM 4 #define sEXPMAX 19 /* maximum name length for file version <= 6 */ #define sNAMEMAX 31 /* maximum name length of symbol name */ typedef struct tagAMX_FUNCSTUB { ucell address PACKED; char name[sEXPMAX+1]; } PACKED AMX_FUNCSTUB; typedef struct tagFUNCSTUBNT { ucell address PACKED; ucell nameofs PACKED; //we need this for amxx to be backwards comaptible } PACKED AMX_FUNCSTUBNT; /* The AMX structure is the internal structure for many functions. Not all * fields are valid at all times; many fields are cached in local variables. */ typedef struct tagAMX { unsigned char _FAR *base PACKED; /* points to the AMX header plus the code, optionally also the data */ unsigned char _FAR *data PACKED; /* points to separate data+stack+heap, may be NULL */ AMX_CALLBACK callback PACKED; AMX_DEBUG debug PACKED; /* debug callback */ /* for external functions a few registers must be accessible from the outside */ cell cip PACKED; /* instruction pointer: relative to base + amxhdr->cod */ cell frm PACKED; /* stack frame base: relative to base + amxhdr->dat */ cell hea PACKED; /* top of the heap: relative to base + amxhdr->dat */ cell hlw PACKED; /* bottom of the heap: relative to base + amxhdr->dat */ cell stk PACKED; /* stack pointer: relative to base + amxhdr->dat */ cell stp PACKED; /* top of the stack: relative to base + amxhdr->dat */ int flags PACKED; /* current status, see amx_Flags() */ /* user data */ long usertags[AMX_USERNUM] PACKED; void _FAR *userdata[AMX_USERNUM] PACKED; /* native functions can raise an error */ int error PACKED; /* passing parameters requires a "count" field */ int paramcount; /* the sleep opcode needs to store the full AMX status */ cell pri PACKED; cell alt PACKED; cell reset_stk PACKED; cell reset_hea PACKED; cell sysreq_d PACKED; /* relocated address/value for the SYSREQ.D opcode */ /* support variables for the JIT */ int reloc_size PACKED; /* required temporary buffer for relocations */ long code_size PACKED; /* estimated memory footprint of the native code */ } PACKED AMX; /* The AMX_HEADER structure is both the memory format as the file format. The * structure is used internaly. */ typedef struct tagAMX_HEADER { int32_t size PACKED; /* size of the "file" */ uint16_t magic PACKED; /* signature */ char file_version; /* file format version */ char amx_version; /* required version of the AMX */ int16_t flags PACKED; int16_t defsize PACKED; /* size of a definition record */ int32_t cod PACKED; /* initial value of COD - code block */ int32_t dat PACKED; /* initial value of DAT - data block */ int32_t hea PACKED; /* initial value of HEA - start of the heap */ int32_t stp PACKED; /* initial value of STP - stack top */ int32_t cip PACKED; /* initial value of CIP - the instruction pointer */ int32_t publics PACKED; /* offset to the "public functions" table */ int32_t natives PACKED; /* offset to the "native functions" table */ int32_t libraries PACKED; /* offset to the table of libraries */ int32_t pubvars PACKED; /* the "public variables" table */ int32_t tags PACKED; /* the "public tagnames" table */ int32_t nametable PACKED; /* name table */ } PACKED AMX_HEADER; //This is always the same for us #define AMX_MAGIC 0xf1e0 enum { AMX_ERR_NONE, /* reserve the first 15 error codes for exit codes of the abstract machine */ AMX_ERR_EXIT, /* forced exit */ AMX_ERR_ASSERT, /* assertion failed */ AMX_ERR_STACKERR, /* stack/heap collision */ AMX_ERR_BOUNDS, /* index out of bounds */ AMX_ERR_MEMACCESS, /* invalid memory access */ AMX_ERR_INVINSTR, /* invalid instruction */ AMX_ERR_STACKLOW, /* stack underflow */ AMX_ERR_HEAPLOW, /* heap underflow */ AMX_ERR_CALLBACK, /* no callback, or invalid callback */ AMX_ERR_NATIVE, /* native function failed */ AMX_ERR_DIVIDE, /* divide by zero */ AMX_ERR_SLEEP, /* go into sleepmode - code can be restarted */ AMX_ERR_INVSTATE, /* invalid state for this access */ AMX_ERR_MEMORY = 16, /* out of memory */ AMX_ERR_FORMAT, /* invalid file format */ AMX_ERR_VERSION, /* file is for a newer version of the AMX */ AMX_ERR_NOTFOUND, /* function not found */ AMX_ERR_INDEX, /* invalid index parameter (bad entry point) */ AMX_ERR_DEBUG, /* debugger cannot run */ AMX_ERR_INIT, /* AMX not initialized (or doubly initialized) */ AMX_ERR_USERDATA, /* unable to set user data field (table full) */ AMX_ERR_INIT_JIT, /* cannot initialize the JIT */ AMX_ERR_PARAMS, /* parameter error */ AMX_ERR_DOMAIN, /* domain error, expression result does not fit in range */ AMX_ERR_GENERAL, /* general error (unknown or unspecific error) */ }; /* AMX_FLAG_CHAR16 0x01 no longer used */ #define AMX_FLAG_DEBUG 0x02 /* symbolic info. available */ #define AMX_FLAG_COMPACT 0x04 /* compact encoding */ #define AMX_FLAG_BYTEOPC 0x08 /* opcode is a byte (not a cell) */ #define AMX_FLAG_NOCHECKS 0x10 /* no array bounds checking; no STMT opcode */ #define AMX_FLAG_NTVREG 0x1000 /* all native functions are registered */ #define AMX_FLAG_JITC 0x2000 /* abstract machine is JIT compiled */ #define AMX_FLAG_BROWSE 0x4000 /* busy browsing */ #define AMX_FLAG_RELOC 0x8000 /* jump/call addresses relocated */ #define AMX_EXEC_MAIN -1 /* start at program entry point */ #define AMX_EXEC_CONT -2 /* continue from last address */ #define AMX_USERTAG(a,b,c,d) ((a) | ((b)<<8) | ((long)(c)<<16) | ((long)(d)<<24)) #if !defined AMX_COMPACTMARGIN #define AMX_COMPACTMARGIN 64 #endif /* for native functions that use floating point parameters, the following * two macros are convenient for casting a "cell" into a "float" type _without_ * changing the bit pattern */ #if PAWN_CELL_SIZE==32 #define amx_ftoc(f) ( * ((cell*)&f) ) /* float to cell */ #define amx_ctof(c) ( * ((float*)&c) ) /* cell to float */ #elif PAWN_CELL_SIZE==64 #define amx_ftoc(f) ( * ((cell*)&f) ) /* float to cell */ #define amx_ctof(c) ( * ((double*)&c) ) /* cell to float */ #else #error Unsupported cell size #endif #define amx_StrParam(amx,param,result) \ do { \ cell *amx_cstr_; int amx_length_; \ amx_GetAddr((amx), (param), &amx_cstr_); \ amx_StrLen(amx_cstr_, &amx_length_); \ if (amx_length_ > 0 && \ ((result) = (void*)alloca((amx_length_ + 1) * sizeof(*(result)))) != NULL) \ amx_GetString((char*)(result), amx_cstr_, sizeof(*(result))>1, amx_length_); \ else (result) = NULL; \ } while (0) uint16_t * AMXAPI amx_Align16(uint16_t *v); uint32_t * AMXAPI amx_Align32(uint32_t *v); #if defined _I64_MAX || defined HAVE_I64 uint64_t * AMXAPI amx_Align64(uint64_t *v); #endif int AMXAPI amx_Allot(AMX *amx, int cells, cell *amx_addr, cell **phys_addr); int AMXAPI amx_Callback(AMX *amx, cell index, cell *result, cell *params); int AMXAPI amx_Cleanup(AMX *amx); int AMXAPI amx_Clone(AMX *amxClone, AMX *amxSource, void *data); int AMXAPI amx_Exec(AMX *amx, cell *retval, int index); int AMXAPI amx_FindNative(AMX *amx, const char *name, int *index); int AMXAPI amx_FindPublic(AMX *amx, const char *funcname, int *index); int AMXAPI amx_FindPubVar(AMX *amx, const char *varname, cell *amx_addr); int AMXAPI amx_FindTagId(AMX *amx, cell tag_id, char *tagname); int AMXAPI amx_Flags(AMX *amx,uint16_t *flags); int AMXAPI amx_GetAddr(AMX *amx,cell amx_addr,cell **phys_addr); int AMXAPI amx_GetNative(AMX *amx, int index, char *funcname); int AMXAPI amx_GetPublic(AMX *amx, int index, char *funcname); int AMXAPI amx_GetPubVar(AMX *amx, int index, char *varname, cell *amx_addr); int AMXAPI amx_GetString(char *dest,const cell *source, int use_wchar, size_t size); int AMXAPI amx_GetTag(AMX *amx, int index, char *tagname, cell *tag_id); int AMXAPI amx_GetUserData(AMX *amx, long tag, void **ptr); int AMXAPI amx_Init(AMX *amx, void *program); int AMXAPI amx_InitJIT(AMX *amx, void *reloc_table, void *native_code); int AMXAPI amx_MemInfo(AMX *amx, long *codesize, long *datasize, long *stackheap); int AMXAPI amx_NameLength(AMX *amx, int *length); AMX_NATIVE_INFO * AMXAPI amx_NativeInfo(const char *name, AMX_NATIVE func); int AMXAPI amx_NumNatives(AMX *amx, int *number); int AMXAPI amx_NumPublics(AMX *amx, int *number); int AMXAPI amx_NumPubVars(AMX *amx, int *number); int AMXAPI amx_NumTags(AMX *amx, int *number); int AMXAPI amx_Push(AMX *amx, cell value); int AMXAPI amx_PushArray(AMX *amx, cell *amx_addr, cell **phys_addr, const cell array[], int numcells); int AMXAPI amx_PushString(AMX *amx, cell *amx_addr, cell **phys_addr, const char *string, int pack, int use_wchar); int AMXAPI amx_RaiseError(AMX *amx, int error); int AMXAPI amx_Register(AMX *amx, const AMX_NATIVE_INFO *nativelist, int number); int AMXAPI amx_Release(AMX *amx, cell amx_addr); int AMXAPI amx_SetCallback(AMX *amx, AMX_CALLBACK callback); int AMXAPI amx_SetDebugHook(AMX *amx, AMX_DEBUG debug); int AMXAPI amx_SetString(cell *dest, const char *source, int pack, int use_wchar, size_t size); int AMXAPI amx_SetUserData(AMX *amx, long tag, void *ptr); int AMXAPI amx_StrLen(const cell *cstring, int *length); int AMXAPI amx_UTF8Check(const char *string, int *length); int AMXAPI amx_UTF8Get(const char *string, const char **endptr, cell *value); int AMXAPI amx_UTF8Len(const cell *cstr, int *length); int AMXAPI amx_UTF8Put(char *string, char **endptr, int maxchars, cell value); #if PAWN_CELL_SIZE==16 #define amx_AlignCell(v) amx_Align16(v) #elif PAWN_CELL_SIZE==32 #define amx_AlignCell(v) amx_Align32(v) #elif PAWN_CELL_SIZE==64 && (defined _I64_MAX || defined HAVE_I64) #define amx_AlignCell(v) amx_Align64(v) #else #error Unsupported cell size #endif #define amx_RegisterFunc(amx, name, func) \ amx_Register((amx), amx_NativeInfo((name),(func)), 1); #if !defined AMX_NO_ALIGN #if defined LINUX || defined __FreeBSD__ #pragma pack() /* reset default packing */ #elif defined MACOS && defined __MWERKS__ #pragma options align=reset #else #pragma pack(pop) /* reset previous packing */ #endif #endif #ifdef __cplusplus } #endif #endif /* AMX_H_INCLUDED */