384 lines
16 KiB
C
384 lines
16 KiB
C
|
/* 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 */
|