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1dc16b835e
amxmodx/compiler/scasm/amx.h
David Anderson 06098e3bf1 Imported: AMXXSC, LIBSC, SCASM
2004-08-06 08:46:59 +00:00

384 lines
16 KiB
C
Executable File
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/* Abstract Machine for the Small compiler
*
* Copyright (c) ITB CompuPhase, 1997-2004
*
* 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: $Id$
*/
#if defined LINUX
#include <sclinux.h>
#endif
#ifndef AMX_H_INCLUDED
#define AMX_H_INCLUDED
#if defined __LCC__ || defined __DMC__ || defined LINUX
#include <stdint.h>
#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 __FreeBSD__
#include <inttypes.h>
#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
#if defined __WIN32__ || defined _WIN32 || defined WIN32 /* || defined __MSDOS__ */
#if !defined alloca
#define alloca(n) _alloca(n)
#endif
#endif
#ifdef __cplusplus
extern "C" {
#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
#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
*/
#define CUR_FILE_VERSION 7 /* 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 7 /* minimum AMX version needed to support the current file format */
#if defined BIT16
#define SMALL_CELL_SIZE 16 /* for backward compatibility */
#endif
#if !defined SMALL_CELL_SIZE
#define SMALL_CELL_SIZE 32 /* by default, use 32-bit cells */
#endif
#if SMALL_CELL_SIZE==16
typedef uint16_t ucell;
typedef int16_t cell;
#elif SMALL_CELL_SIZE==32
typedef uint32_t ucell;
typedef int32_t cell;
#elif SMALL_CELL_SIZE==64
typedef uint64_t ucell;
typedef int64_t cell;
#else
#error Unsupported cell size (SMALL_CELL_SIZE)
#endif
#define UNPACKEDMAX ((1 << (sizeof(cell)-1)*8) - 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__
#define AMX_NO_ALIGN
#endif
#if defined __GNUC__
#define PACKED __attribute__((packed))
#else
#define PACKED
#endif
#if !defined AMX_NO_ALIGN
#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) */
#if defined __TURBOC__
#pragma option -a- /* "pack" pragma for older Borland compilers */
#endif
#endif
#endif
typedef struct {
const char _FAR *name PACKED;
AMX_NATIVE func PACKED;
} AMX_NATIVE_INFO PACKED;
#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 {
uint32_t address PACKED;
char name[sEXPMAX+1] PACKED;
} AMX_FUNCSTUB PACKED;
/* 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 ("amxhdr") 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() */
/* for assertions and debug hook */
cell curline PACKED;
cell curfile PACKED;
int dbgcode PACKED;
cell dbgaddr PACKED;
cell dbgparam PACKED;
char _FAR *dbgname PACKED;
/* user data */
long usertags[AMX_USERNUM] PACKED;
void _FAR *userdata[AMX_USERNUM] PACKED;
/* native functions can raise an error */
int error PACKED;
/* 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 */
#if defined JIT
/* 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 */
#endif
} AMX PACKED;
/* 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 PACKED; /* file format version */
char amx_version PACKED; /* 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, file version 7 only */
} AMX_HEADER PACKED;
#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_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 */
};
enum {
DBG_INIT, /* query/initialize */
DBG_FILE, /* file number in curfile, filename in name */
DBG_LINE, /* line number in curline, file number in curfile */
DBG_SYMBOL, /* address in dbgaddr, class/type in dbgparam */
DBG_CLRSYM, /* stack address below which locals should be removed. stack address in stk */
DBG_CALL, /* function call, address jumped to in dbgaddr */
DBG_RETURN, /* function returns */
DBG_TERMINATE, /* program ends, code address in dbgaddr, reason in dbgparam */
DBG_SRANGE, /* symbol size and dimensions (arrays); level in dbgaddr (!); length in dbgparam */
DBG_SYMTAG, /* tag of the most recent symbol (if non-zero), tag in dbgparam */
};
/* 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_BIGENDIAN 0x08 /* big endian encoding */
#define AMX_FLAG_NOCHECKS 0x10 /* no array bounds checking */
#define AMX_FLAG_BROWSE 0x4000 /* browsing/relocating or executing */
#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))
#define AMX_EXPANDMARGIN 64
/* 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 SMALL_CELL_SIZE==32
#define amx_ftoc(f) ( * ((cell*)&f) ) /* float to cell */
#define amx_ctof(c) ( * ((float*)&c) ) /* cell to float */
#elif SMALL_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); \
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_Debug(AMX *amx); /* default debug procedure, does nothing */
int AMXAPI amx_Exec(AMX *amx, cell *retval, int index, int numparams, ...);
int AMXAPI amx_Execv(AMX *amx, cell *retval, int index, int numparams, cell params[]);
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);
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_RaiseError(AMX *amx, int error);
int AMXAPI amx_Register(AMX *amx, 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);
int AMXAPI amx_SetUserData(AMX *amx, long tag, void *ptr);
int AMXAPI amx_StrLen(cell *cstring, int *length);
int AMXAPI amx_UTF8Get(const char *string, const char **endptr, cell *value);
int AMXAPI amx_UTF8Put(char *string, char **endptr, int maxchars, cell value);
int AMXAPI amx_UTF8Check(const char *string);
#if !defined AMX_NO_ALIGN
#if defined LINUX
#pragma pack() /* reset default packing */
#else
#pragma pack(pop) /* reset previous packing */
#endif
#endif
#ifdef __cplusplus
}
#endif
#endif /* AMX_H_INCLUDED */
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