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amx.c
5480 lines (5254 loc) · 144 KB
/
amx.c
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/* Pawn Abstract Machine (for the Pawn language)
*
* Copyright (c) ITB CompuPhase, 1997-2007
*
* 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.c 3853 2007-11-26 13:59:01Z thiadmer $
*/
#if BUILD_PLATFORM == WINDOWS && BUILD_TYPE == RELEASE && BUILD_COMPILER == MSVC && PAWN_CELL_SIZE == 64
/* bad bad workaround but we have to prevent a compiler crash :/ */
#pragma optimize("g",off)
#endif
#define WIN32_LEAN_AND_MEAN
#if defined _UNICODE || defined __UNICODE__ || defined UNICODE
# if !defined UNICODE /* for Windows API */
# define UNICODE
# endif
# if !defined _UNICODE /* for C library */
# define _UNICODE
# endif
#endif
#include <assert.h>
#include <stdarg.h>
#include <stddef.h> /* for wchar_t */
#include <stdlib.h> /* for getenv() */
#include <string.h>
#include "osdefs.h"
#if defined __LINUX__ || defined __FreeBSD__ || defined __OpenBSD__
#include <sclinux.h>
#if !defined AMX_NODYNALOAD
#include <dlfcn.h>
#endif
#if defined JIT
#include <sys/types.h>
#include <sys/mman.h>
#endif
#endif
#if defined __LCC__ || defined __LINUX__
#include <wchar.h> /* for wcslen() */
#endif
#if defined __ECOS__
/* eCos puts include files in cyg/package_name */
#include <cyg/pawn/amx.h>
#else
#include "amx.h"
#endif
#if (defined _Windows && !defined AMX_NODYNALOAD) || (defined JIT && __WIN32__)
#include <windows.h>
#endif
/* When one or more of the AMX_funcname macros are defined, we want
* to compile only those functions. However, when none of these macros
* is present, we want to compile everything.
*/
#if defined AMX_ALIGN || defined AMX_ALLOT || defined AMX_CLEANUP
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_CLONE || defined AMX_DEFCALLBACK || defined AMX_EXEC
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_FLAGS || defined AMX_GETADDR || defined AMX_INIT
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_MEMINFO || defined AMX_NAMELENGTH || defined AMX_NATIVEINFO
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_PUSHXXX || defined AMX_RAISEERROR || defined AMX_REGISTER
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_SETCALLBACK || defined AMX_SETDEBUGHOOK || defined AMX_XXXNATIVES
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_XXXPUBLICS || defined AMX_XXXPUBVARS || defined AMX_XXXSTRING
#define AMX_EXPLIT_FUNCTIONS
#endif
#if defined AMX_XXXTAGS || defined AMX_XXXUSERDATA || defined AMX_UTF8XXX
#define AMX_EXPLIT_FUNCTIONS
#endif
#if !defined AMX_EXPLIT_FUNCTIONS
/* no constant set, set them all */
#define AMX_ALIGN /* amx_Align16(), amx_Align32() and amx_Align64() */
#define AMX_ALLOT /* amx_Allot() and amx_Release() */
#define AMX_DEFCALLBACK /* amx_Callback() */
#define AMX_CLEANUP /* amx_Cleanup() */
#define AMX_CLONE /* amx_Clone() */
#define AMX_EXEC /* amx_Exec() */
#define AMX_FLAGS /* amx_Flags() */
#define AMX_GETADDR /* amx_GetAddr() */
#define AMX_INIT /* amx_Init() and amx_InitJIT() */
#define AMX_MEMINFO /* amx_MemInfo() */
#define AMX_NAMELENGTH /* amx_NameLength() */
#define AMX_NATIVEINFO /* amx_NativeInfo() */
#define AMX_PUSHXXX /* amx_Push(), amx_PushArray() and amx_PushString() */
#define AMX_RAISEERROR /* amx_RaiseError() */
#define AMX_REGISTER /* amx_Register() */
#define AMX_SETCALLBACK /* amx_SetCallback() */
#define AMX_SETDEBUGHOOK /* amx_SetDebugHook() */
#define AMX_XXXNATIVES /* amx_NumNatives(), amx_GetNative() and amx_FindNative() */
#define AMX_XXXPUBLICS /* amx_NumPublics(), amx_GetPublic() and amx_FindPublic() */
#define AMX_XXXPUBVARS /* amx_NumPubVars(), amx_GetPubVar() and amx_FindPubVar() */
#define AMX_XXXSTRING /* amx_StrLen(), amx_GetString() and amx_SetString() */
#define AMX_XXXTAGS /* amx_NumTags(), amx_GetTag() and amx_FindTagId() */
#define AMX_XXXUSERDATA /* amx_GetUserData() and amx_SetUserData() */
#define AMX_UTF8XXX /* amx_UTF8Get(), amx_UTF8Put(), amx_UTF8Check() */
#endif
#undef AMX_EXPLIT_FUNCTIONS
#if defined AMX_ANSIONLY
#undef AMX_UTF8XXX /* no UTF-8 support in ANSI/ASCII-only version */
#endif
#if defined AMX_NO_NATIVEINFO
#undef AMX_NATIVEINFO
#endif
#if AMX_USERNUM <= 0
#undef AMX_XXXUSERDATA
#endif
#if defined JIT && !defined AMX_NO_MACRO_INSTR
#define AMX_NO_MACRO_INSTR /* JIT is incompatible with macro instructions */
#endif
#if !defined AMX_NO_PACKED_OPC && !defined AMX_TOKENTHREADING
#define AMX_TOKENTHREADING /* packed opcodes require token threading */
#endif
typedef enum {
OP_NONE, /* invalid opcode */
OP_LOAD_PRI,
OP_LOAD_ALT,
OP_LOAD_S_PRI,
OP_LOAD_S_ALT,
OP_LREF_PRI,
OP_LREF_ALT,
OP_LREF_S_PRI,
OP_LREF_S_ALT,
OP_LOAD_I,
OP_LODB_I,
OP_CONST_PRI,
OP_CONST_ALT,
OP_ADDR_PRI,
OP_ADDR_ALT,
OP_STOR_PRI,
OP_STOR_ALT,
OP_STOR_S_PRI,
OP_STOR_S_ALT,
OP_SREF_PRI,
OP_SREF_ALT,
OP_SREF_S_PRI,
OP_SREF_S_ALT,
OP_STOR_I,
OP_STRB_I,
OP_LIDX,
OP_LIDX_B,
OP_IDXADDR,
OP_IDXADDR_B,
OP_ALIGN_PRI,
OP_ALIGN_ALT,
OP_LCTRL,
OP_SCTRL,
OP_MOVE_PRI,
OP_MOVE_ALT,
OP_XCHG,
OP_PUSH_PRI,
OP_PUSH_ALT,
OP_PUSH_R,
OP_PUSH_C,
OP_PUSH,
OP_PUSH_S,
OP_POP_PRI,
OP_POP_ALT,
OP_STACK,
OP_HEAP,
OP_PROC,
OP_RET,
OP_RETN,
OP_CALL,
OP_CALL_PRI,
OP_JUMP,
OP_JREL, /* obsolete */
OP_JZER,
OP_JNZ,
OP_JEQ,
OP_JNEQ,
OP_JLESS,
OP_JLEQ,
OP_JGRTR,
OP_JGEQ,
OP_JSLESS,
OP_JSLEQ,
OP_JSGRTR,
OP_JSGEQ,
OP_SHL,
OP_SHR,
OP_SSHR,
OP_SHL_C_PRI,
OP_SHL_C_ALT,
OP_SHR_C_PRI,
OP_SHR_C_ALT,
OP_SMUL,
OP_SDIV,
OP_SDIV_ALT,
OP_UMUL,
OP_UDIV,
OP_UDIV_ALT,
OP_ADD,
OP_SUB,
OP_SUB_ALT,
OP_AND,
OP_OR,
OP_XOR,
OP_NOT,
OP_NEG,
OP_INVERT,
OP_ADD_C,
OP_SMUL_C,
OP_ZERO_PRI,
OP_ZERO_ALT,
OP_ZERO,
OP_ZERO_S,
OP_SIGN_PRI,
OP_SIGN_ALT,
OP_EQ,
OP_NEQ,
OP_LESS,
OP_LEQ,
OP_GRTR,
OP_GEQ,
OP_SLESS,
OP_SLEQ,
OP_SGRTR,
OP_SGEQ,
OP_EQ_C_PRI,
OP_EQ_C_ALT,
OP_INC_PRI,
OP_INC_ALT,
OP_INC,
OP_INC_S,
OP_INC_I,
OP_DEC_PRI,
OP_DEC_ALT,
OP_DEC,
OP_DEC_S,
OP_DEC_I,
OP_MOVS,
OP_CMPS,
OP_FILL,
OP_HALT,
OP_BOUNDS,
OP_SYSREQ_PRI,
OP_SYSREQ_C,
OP_FILE, /* obsolete */
OP_LINE, /* obsolete */
OP_SYMBOL, /* obsolete */
OP_SRANGE, /* obsolete */
OP_JUMP_PRI,
OP_SWITCH,
OP_CASETBL,
OP_SWAP_PRI,
OP_SWAP_ALT,
OP_PUSH_ADR,
OP_NOP,
OP_SYSREQ_N,
OP_SYMTAG, /* obsolete */
OP_BREAK,
/* macro instructions */
OP_PUSH2_C,
OP_PUSH2,
OP_PUSH2_S,
OP_PUSH2_ADR,
OP_PUSH3_C,
OP_PUSH3,
OP_PUSH3_S,
OP_PUSH3_ADR,
OP_PUSH4_C,
OP_PUSH4,
OP_PUSH4_S,
OP_PUSH4_ADR,
OP_PUSH5_C,
OP_PUSH5,
OP_PUSH5_S,
OP_PUSH5_ADR,
OP_LOAD_BOTH,
OP_LOAD_S_BOTH,
OP_CONST,
OP_CONST_S,
/* overlay instructions */
OP_ICALL,
OP_IRETN,
OP_ISWITCH,
OP_ICASETBL,
/* packed instructions */
#if !defined AMX_NO_PACKED_OPC
OP_LOAD_P_PRI,
OP_LOAD_P_ALT,
OP_LOAD_P_S_PRI,
OP_LOAD_P_S_ALT,
OP_LREF_P_PRI,
OP_LREF_P_ALT,
OP_LREF_P_S_PRI,
OP_LREF_P_S_ALT,
OP_LODB_P_I,
OP_CONST_P_PRI,
OP_CONST_P_ALT,
OP_ADDR_P_PRI,
OP_ADDR_P_ALT,
OP_STOR_P_PRI,
OP_STOR_P_ALT,
OP_STOR_P_S_PRI,
OP_STOR_P_S_ALT,
OP_SREF_P_PRI,
OP_SREF_P_ALT,
OP_SREF_P_S_PRI,
OP_SREF_P_S_ALT,
OP_STRB_P_I,
OP_LIDX_P_B,
OP_IDXADDR_P_B,
OP_ALIGN_P_PRI,
OP_ALIGN_P_ALT,
OP_PUSH_P_C,
OP_PUSH_P,
OP_PUSH_P_S,
OP_STACK_P,
OP_HEAP_P,
OP_SHL_P_C_PRI,
OP_SHL_P_C_ALT,
OP_SHR_P_C_PRI,
OP_SHR_P_C_ALT,
OP_ADD_P_C,
OP_SMUL_P_C,
OP_ZERO_P,
OP_ZERO_P_S,
OP_EQ_P_C_PRI,
OP_EQ_P_C_ALT,
OP_INC_P,
OP_INC_P_S,
OP_DEC_P,
OP_DEC_P_S,
OP_MOVS_P,
OP_CMPS_P,
OP_FILL_P,
OP_HALT_P,
OP_BOUNDS_P,
OP_PUSH_P_ADR,
#endif
/* ----- */
OP_SYSREQ_D,
OP_SYSREQ_ND,
/* ----- */
OP_NUM_OPCODES
} OPCODE;
#define USENAMETABLE(hdr) \
((hdr)->defsize==sizeof(AMX_FUNCSTUBNT))
#define NUMENTRIES(hdr,field,nextfield) \
(unsigned)(((hdr)->nextfield - (hdr)->field) / (hdr)->defsize)
#define GETENTRY(hdr,table,index) \
(AMX_FUNCSTUB *)((unsigned char*)(hdr) + (unsigned)(hdr)->table + (unsigned)index*(hdr)->defsize)
#define GETENTRYNAME(hdr,entry) \
( USENAMETABLE(hdr) \
? (char *)((unsigned char*)(hdr) + (unsigned)((AMX_FUNCSTUBNT*)(entry))->nameofs) \
: ((AMX_FUNCSTUB*)(entry))->name )
#if !defined NDEBUG
static int check_endian(void)
{
uint16_t val=0x00ff;
unsigned char *ptr=(unsigned char *)&val;
/* "ptr" points to the starting address of "val". If that address
* holds the byte "0xff", the computer stored the low byte of "val"
* at the lower address, and so the memory lay out is Little Endian.
*/
assert(*ptr==0xff || *ptr==0x00);
#if BYTE_ORDER==BIG_ENDIAN
return *ptr==0x00; /* return "true" if big endian */
#else
return *ptr==0xff; /* return "true" if little endian */
#endif
}
#endif
#if BYTE_ORDER==BIG_ENDIAN || PAWN_CELL_SIZE==16
static void swap16(uint16_t *v)
{
unsigned char *s = (unsigned char *)v;
unsigned char t;
assert(sizeof(*v)==2);
/* swap two bytes */
t=s[0];
s[0]=s[1];
s[1]=t;
}
#endif
#if BYTE_ORDER==BIG_ENDIAN || PAWN_CELL_SIZE==32
static void swap32(uint32_t *v)
{
unsigned char *s = (unsigned char *)v;
unsigned char t;
assert_static(sizeof(*v)==4);
/* swap outer two bytes */
t=s[0];
s[0]=s[3];
s[3]=t;
/* swap inner two bytes */
t=s[1];
s[1]=s[2];
s[2]=t;
}
#endif
#if (BYTE_ORDER==BIG_ENDIAN || PAWN_CELL_SIZE==64) && (defined _I64_MAX || defined HAVE_I64)
static void swap64(uint64_t *v)
{
unsigned char *s = (unsigned char *)v;
unsigned char t;
assert(sizeof(*v)==8);
t=s[0];
s[0]=s[7];
s[7]=t;
t=s[1];
s[1]=s[6];
s[6]=t;
t=s[2];
s[2]=s[5];
s[5]=t;
t=s[3];
s[3]=s[4];
s[4]=t;
}
#endif
#if defined AMX_ALIGN || defined AMX_INIT
uint16_t * AMXAPI amx_Align16(uint16_t *v)
{
assert_static(sizeof(*v)==2);
assert(check_endian());
#if BYTE_ORDER==BIG_ENDIAN
swap16(v);
#endif
return v;
}
uint32_t * AMXAPI amx_Align32(uint32_t *v)
{
assert_static(sizeof(*v)==4);
assert(check_endian());
#if BYTE_ORDER==BIG_ENDIAN
swap32(v);
#endif
return v;
}
#if defined _I64_MAX || defined HAVE_I64
uint64_t * AMXAPI amx_Align64(uint64_t *v)
{
assert(sizeof(*v)==8);
assert(check_endian());
#if BYTE_ORDER==BIG_ENDIAN
swap64(v);
#endif
return v;
}
#endif /* _I64_MAX || HAVE_I64 */
#endif /* AMX_ALIGN || AMX_INIT */
#if PAWN_CELL_SIZE==16
#define swapcell swap16
#elif PAWN_CELL_SIZE==32
#define swapcell swap32
#elif PAWN_CELL_SIZE==64 && (defined _I64_MAX || defined HAVE_I64)
#define swapcell swap64
#else
#error Unsupported cell size
#endif
#if defined AMX_FLAGS
int AMXAPI amx_Flags(AMX *amx,uint16_t *flags)
{
AMX_HEADER *hdr;
*flags=0;
if (amx==NULL)
return AMX_ERR_FORMAT;
hdr=(AMX_HEADER *)amx->base;
if (hdr->magic!=AMX_MAGIC)
return AMX_ERR_FORMAT;
if (hdr->file_version>CUR_FILE_VERSION || hdr->amx_version<MIN_FILE_VERSION)
return AMX_ERR_VERSION;
*flags=hdr->flags;
return AMX_ERR_NONE;
}
#endif /* AMX_FLAGS */
#if defined AMX_DEFCALLBACK
int AMXAPI amx_Callback(AMX *amx, cell index, cell *result, const cell *params)
{
#if defined AMX_NATIVETABLE
extern AMX_NATIVE const AMX_NATIVETABLE[];
#endif
AMX_HEADER *hdr;
AMX_FUNCSTUB *func;
AMX_NATIVE f;
assert(amx!=NULL);
hdr=(AMX_HEADER *)amx->base;
assert(hdr!=NULL);
assert(hdr->magic==AMX_MAGIC);
assert(hdr->natives<=hdr->libraries);
#if defined AMX_NATIVETABLE
if (index<0) {
/* size of AMX_NATIVETABLE is unknown here, so we cannot verify index */
f=(AMX_NATIVETABLE)[-(index+1)];
} else {
#endif
assert(index>=0 && index<(cell)NUMENTRIES(hdr,natives,libraries));
func=GETENTRY(hdr,natives,index);
f=(AMX_NATIVE)func->address;
#if defined AMX_NATIVETABLE
} /* if */
#endif
assert(f!=NULL);
/* Now that we have found the function, patch the program so that any
* subsequent call will call the function directly (bypassing this
* callback).
* This trick cannot work in the JIT, because the program would need to
* be re-JIT-compiled after patching a P-code instruction.
*/
#if defined JIT && !defined NDEBUG
if ((amx->flags & AMX_FLAG_JITC)!=0)
assert(amx->sysreq_d==0);
#endif
if (amx->sysreq_d!=0) {
/* at the point of the call, the CIP pseudo-register points directly
* behind the SYSREQ instruction and its parameter(s)
*/
unsigned char *code=amx->code+(int)amx->cip-sizeof(cell);
assert(amx->code!=NULL);
assert(amx->cip >= 4 && amx->cip < (hdr->dat - hdr->cod));
assert_static(sizeof(f)<=sizeof(cell)); /* function pointer must fit in a cell */
if (amx->flags & AMX_FLAG_SYSREQN) /* SYSREQ.N has 2 parameters */
code-=sizeof(cell);
#if defined __GNUC__ || defined __ICC || defined ASM32
if (*(cell*)code==index) {
#else
if (*(cell*)code!=OP_SYSREQ_PRI) {
assert(*(cell*)(code-sizeof(cell))==OP_SYSREQ_C || *(cell*)(code-sizeof(cell))==OP_SYSREQ_N);
assert(*(cell*)code==index);
#endif
*(cell*)(code-sizeof(cell))=amx->sysreq_d;
*(cell*)code=(cell)f;
} /* if */
} /* if */
/* Note:
* params[0] == number of bytes for the additional parameters passed to the native function
* params[1] == first argument
* etc.
*/
amx->error=AMX_ERR_NONE;
*result = f(amx,params);
return amx->error;
}
#endif /* defined AMX_DEFCALLBACK */
#if defined JIT
extern int AMXAPI getMaxCodeSize(void);
extern int AMXAPI asm_runJIT(void *sourceAMXbase, void *jumparray, void *compiledAMXbase);
/* convert from relative addresses to absolute physical addresses */
#define RELOC_ABS(base,off) (*(ucell *)((base)+(int)(off)) += (ucell)(base)+(int)(off)+sizeof(cell))
#else
#define JUMPREL(ip) ((cell*)((unsigned long)(ip)+*(cell*)(ip)-sizeof(cell)))
#endif
#if defined ASM32 || defined JIT
#define RELOCATE_ADDR(base,v) ((v)+((ucell)(base)))
#else
#define RELOCATE_ADDR(base,v) (v)
#endif
/* convert from absolute virtual addresses to relative addresses */
#define RELOC_PIC(base,off) (*(ucell *)((base)+(int)(off)) -= (ucell)(off)-sizeof(cell))
#define DBGPARAM(v) ( (v)=*(cell *)(amx->code+(int)cip), cip+=sizeof(cell) )
#if defined AMX_INIT
static int VerifyPcode(AMX *amx)
{
AMX_HEADER *hdr;
cell op,cip,tgt;
int sysreq_flg;
#if (defined __GNUC__ || defined __ICC || defined ASM32 || defined JIT) && !defined AMX_TOKENTHREADING
cell *opcode_list;
#endif
#if defined JIT
int opcode_count = 0;
int reloc_count = 0;
#endif
assert(amx!=NULL);
hdr=(AMX_HEADER *)amx->base;
assert(hdr!=NULL);
assert(hdr->magic==AMX_MAGIC);
amx->flags|=AMX_FLAG_VERIFY;
/* sanity checks */
assert_static(OP_PUSH_PRI==36);
assert_static(OP_PROC==46);
assert_static(OP_SHL==65);
assert_static(OP_SMUL==72);
assert_static(OP_EQ==95);
assert_static(OP_INC_PRI==107);
assert_static(OP_MOVS==117);
assert_static(OP_SYMBOL==126);
assert_static(OP_LOAD_BOTH==154);
assert_static(OP_ICALL==158);
#if !defined AMX_NO_PACKED_OPC
assert_static(OP_LOAD_P_PRI==162);
assert_static(OP_PUSH_P_ADR==212);
#endif
#if (defined __GNUC__ || defined __ICC || defined ASM32 || defined JIT) && !defined AMX_TOKENTHREADING
amx_Exec(amx, (cell*)(void*)&opcode_list, 0);
#endif
sysreq_flg=0;
#if (defined __GNUC__ || defined __ICC || defined ASM32 || defined JIT) && !(defined __64BIT__ || defined AMX_TOKENTHREADING)
if (amx->sysreq_d==opcode_list[OP_SYSREQ_D])
sysreq_flg==0x01;
else if (amx->sysreq_d==opcode_list[OP_SYSREQ_ND])
sysreq_flg==0x02;
#else
if (amx->sysreq_d==OP_SYSREQ_D)
sysreq_flg=0x01;
else if (amx->sysreq_d==OP_SYSREQ_ND)
sysreq_flg=0x02;
#endif
amx->sysreq_d=0; /* preset */
/* start browsing code */
assert(amx->code!=NULL); /* should already have been set in amx_Init() */
for (cip=0; cip<amx->codesize; ) {
op=*(cell *)(amx->code+(int)cip);
#if !defined AMX_NO_PACKED_OPC
op &= (1 << sizeof(cell)*4)-1;
#endif
if ((unsigned)op>=OP_NUM_OPCODES) {
amx->flags &= ~AMX_FLAG_VERIFY;
return AMX_ERR_INVINSTR;
} /* if */
#if (defined __GNUC__ || defined __ICC || defined ASM32 || defined JIT) && !defined AMX_TOKENTHREADING
/* relocate opcode (only works if the size of an opcode is at least
* as big as the size of a pointer (jump address); so basically we
* rely on the opcode and a pointer being 32-bit
*/
*(cell *)(amx->code+(int)cip) = opcode_list[op];
#endif
#if defined JIT
opcode_count++;
#endif
cip+=sizeof(cell);
switch (op) {
#if !defined AMX_NO_MACRO_INSTR
case OP_PUSH5_C: /* instructions with 5 parameters */
case OP_PUSH5:
case OP_PUSH5_S:
case OP_PUSH5_ADR:
cip+=sizeof(cell)*5;
break;
case OP_PUSH4_C: /* instructions with 4 parameters */
case OP_PUSH4:
case OP_PUSH4_S:
case OP_PUSH4_ADR:
cip+=sizeof(cell)*4;
break;
case OP_PUSH3_C: /* instructions with 3 parameters */
case OP_PUSH3:
case OP_PUSH3_S:
case OP_PUSH3_ADR:
cip+=sizeof(cell)*3;
break;
case OP_PUSH2_C: /* instructions with 2 parameters */
case OP_PUSH2:
case OP_PUSH2_S:
case OP_PUSH2_ADR:
case OP_LOAD_BOTH:
case OP_LOAD_S_BOTH:
case OP_CONST:
case OP_CONST_S:
cip+=sizeof(cell)*2;
break;
#endif /* !defined AMX_NO_MACRO_INSTR */
#if !defined AMX_NO_PACKED_OPC
case OP_LOAD_P_PRI: /* instructions with 1 parameter packed inside the same cell */
case OP_LOAD_P_ALT:
case OP_LOAD_P_S_PRI:
case OP_LOAD_P_S_ALT:
case OP_LREF_P_PRI:
case OP_LREF_P_ALT:
case OP_LREF_P_S_PRI:
case OP_LREF_P_S_ALT:
case OP_LODB_P_I:
case OP_CONST_P_PRI:
case OP_CONST_P_ALT:
case OP_ADDR_P_PRI:
case OP_ADDR_P_ALT:
case OP_STOR_P_PRI:
case OP_STOR_P_ALT:
case OP_STOR_P_S_PRI:
case OP_STOR_P_S_ALT:
case OP_SREF_P_PRI:
case OP_SREF_P_ALT:
case OP_SREF_P_S_PRI:
case OP_SREF_P_S_ALT:
case OP_STRB_P_I:
case OP_LIDX_P_B:
case OP_IDXADDR_P_B:
case OP_ALIGN_P_PRI:
case OP_ALIGN_P_ALT:
case OP_PUSH_P_C:
case OP_PUSH_P:
case OP_PUSH_P_S:
case OP_STACK_P:
case OP_HEAP_P:
case OP_SHL_P_C_PRI:
case OP_SHL_P_C_ALT:
case OP_SHR_P_C_PRI:
case OP_SHR_P_C_ALT:
case OP_ADD_P_C:
case OP_SMUL_P_C:
case OP_ZERO_P:
case OP_ZERO_P_S:
case OP_EQ_P_C_PRI:
case OP_EQ_P_C_ALT:
case OP_INC_P:
case OP_INC_P_S:
case OP_DEC_P:
case OP_DEC_P_S:
case OP_MOVS_P:
case OP_CMPS_P:
case OP_FILL_P:
case OP_HALT_P:
case OP_BOUNDS_P:
case OP_PUSH_P_ADR:
break;
#endif /* !defined AMX_NO_PACKED_OPC */
case OP_LOAD_PRI: /* instructions with 1 parameter (not packed) */
case OP_LOAD_ALT:
case OP_LOAD_S_PRI:
case OP_LOAD_S_ALT:
case OP_LREF_PRI:
case OP_LREF_ALT:
case OP_LREF_S_PRI:
case OP_LREF_S_ALT:
case OP_LODB_I:
case OP_CONST_PRI:
case OP_CONST_ALT:
case OP_ADDR_PRI:
case OP_ADDR_ALT:
case OP_STOR_PRI:
case OP_STOR_ALT:
case OP_STOR_S_PRI:
case OP_STOR_S_ALT:
case OP_SREF_PRI:
case OP_SREF_ALT:
case OP_SREF_S_PRI:
case OP_SREF_S_ALT:
case OP_STRB_I:
case OP_LIDX_B:
case OP_IDXADDR_B:
case OP_ALIGN_PRI:
case OP_ALIGN_ALT:
case OP_LCTRL:
case OP_SCTRL:
case OP_PUSH_R:
case OP_PUSH_C:
case OP_PUSH:
case OP_PUSH_S:
case OP_STACK:
case OP_HEAP:
case OP_JREL:
case OP_SHL_C_PRI:
case OP_SHL_C_ALT:
case OP_SHR_C_PRI:
case OP_SHR_C_ALT:
case OP_ADD_C:
case OP_SMUL_C:
case OP_ZERO:
case OP_ZERO_S:
case OP_EQ_C_PRI:
case OP_EQ_C_ALT:
case OP_INC:
case OP_INC_S:
case OP_DEC:
case OP_DEC_S:
case OP_MOVS:
case OP_CMPS:
case OP_FILL:
case OP_HALT:
case OP_BOUNDS:
case OP_PUSH_ADR:
cip+=sizeof(cell);
break;
case OP_LOAD_I: /* instructions without parameters */
case OP_STOR_I:
case OP_LIDX:
case OP_IDXADDR:
case OP_MOVE_PRI:
case OP_MOVE_ALT:
case OP_XCHG:
case OP_PUSH_PRI:
case OP_PUSH_ALT:
case OP_POP_PRI:
case OP_POP_ALT:
case OP_PROC:
case OP_RET:
case OP_RETN:
case OP_CALL_PRI:
case OP_SHL:
case OP_SHR:
case OP_SSHR:
case OP_SMUL:
case OP_SDIV:
case OP_SDIV_ALT:
case OP_UMUL:
case OP_UDIV:
case OP_UDIV_ALT:
case OP_ADD:
case OP_SUB:
case OP_SUB_ALT:
case OP_AND:
case OP_OR:
case OP_XOR:
case OP_NOT:
case OP_NEG:
case OP_INVERT:
case OP_ZERO_PRI:
case OP_ZERO_ALT:
case OP_SIGN_PRI:
case OP_SIGN_ALT:
case OP_EQ:
case OP_NEQ:
case OP_LESS:
case OP_LEQ:
case OP_GRTR:
case OP_GEQ:
case OP_SLESS:
case OP_SLEQ:
case OP_SGRTR:
case OP_SGEQ:
case OP_INC_PRI:
case OP_INC_ALT:
case OP_INC_I:
case OP_DEC_PRI:
case OP_DEC_ALT:
case OP_DEC_I:
case OP_SYSREQ_PRI:
case OP_JUMP_PRI:
case OP_SWAP_PRI:
case OP_SWAP_ALT:
case OP_NOP:
case OP_BREAK:
break;
case OP_CALL: /* opcodes that need relocation (JIT only), or conversion to position-independent code */
case OP_JUMP:
case OP_JZER:
case OP_JNZ:
case OP_JEQ:
case OP_JNEQ:
case OP_JLESS:
case OP_JLEQ:
case OP_JGRTR:
case OP_JGEQ:
case OP_JSLESS:
case OP_JSLEQ:
case OP_JSGRTR:
case OP_JSGEQ:
case OP_SWITCH:
/* if this file is an older version (absolute references instead of the
* current use of position-independent code), convert the parameter
* to position-independent code first
*/
if (hdr->file_version<10)
RELOC_PIC(amx->code,cip);
tgt=*(cell*)(amx->code+(int)cip)+cip-sizeof(cell);
if (tgt<0 || tgt>amx->codesize) {
amx->flags &= ~AMX_FLAG_VERIFY;
return AMX_ERR_BOUNDS;
} /* if */
#if defined JIT
reloc_count++;
RELOC_ABS(amx->code, cip); /* change to absolute physical address */
#endif
cip+=sizeof(cell);
break;
/* overlay opcodes (overlays must be enabled) */
case OP_ISWITCH:
assert(hdr->file_version>=10);
tgt=*(cell*)(amx->code+(int)cip)+cip-sizeof(cell);
if (tgt<0 || tgt>amx->codesize) {
amx->flags &= ~AMX_FLAG_VERIFY;
return AMX_ERR_BOUNDS;
} /* if */
#if defined JIT
if ((amx->flags & AMX_FLAG_JITC)!=0)
return AMX_ERR_OVERLAY; /* JIT does not support overlays */
#endif
/* drop through */
case OP_ICALL:
cip+=sizeof(cell);
/* drop through */
case OP_IRETN:
assert(hdr->overlays!=0 && hdr->overlays!=hdr->nametable);
#if defined JIT
if ((amx->flags & AMX_FLAG_JITC)!=0)
return AMX_ERR_OVERLAY; /* JIT does not support overlays */
#endif
if (amx->overlay==NULL)
return AMX_ERR_OVERLAY; /* no overlay callback */
break;
case OP_ICASETBL: {
cell num;
DBGPARAM(num); /* number of records follows the opcode */
cip+=(2*num + 1)*sizeof(cell);
if (amx->overlay==NULL)
return AMX_ERR_OVERLAY; /* no overlay callback */
break;
} /* case */
case OP_SYSREQ_C:
cip+=sizeof(cell);
sysreq_flg|=0x01; /* mark SYSREQ.C found */
break;
#if !defined AMX_NO_MACRO_INSTR
case OP_SYSREQ_N:
cip+=sizeof(cell)*2;
sysreq_flg|=0x02; /* mark SYSREQ.N found */
break;
#endif
case OP_CASETBL: {
cell num;
int i;
DBGPARAM(num); /* number of records follows the opcode */
for (i=0; i<=num; i++) {
cell offs=cip+2*i*sizeof(cell);
/* if this file is an older version (absolute references instead of the
* current use of position-independent code), convert the parameter
* to position-independent code first
*/
if (hdr->file_version<10)
RELOC_PIC(amx->code,offs);
tgt=*(cell*)(amx->code+(int)offs)+offs-sizeof(cell);
if (tgt<0 || tgt>amx->codesize) {
amx->flags &= ~AMX_FLAG_VERIFY;
return AMX_ERR_BOUNDS;
} /* if */
#if defined JIT
RELOC_ABS(amx->code, cip+2*i*sizeof(cell));
reloc_count++;
#endif
} /* for */
cip+=(2*num + 1)*sizeof(cell);
break;
} /* case */