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Committed new register_native system

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This commit is contained in:
David Anderson 2005-07-31 20:11:58 +00:00
parent 34acc54cc9
commit abfca025d5
15 changed files with 745 additions and 19 deletions
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53
amxmodx/CPlugin.cpp
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@ -34,6 +34,9 @@
#include "CForward.h"
#include "CFile.h"
#include "amx.h"
#include "natives.h"
extern const char *no_function;
CPluginMngr::CPlugin* CPluginMngr::loadPlugin(const char* path, const char* name, char* error, int debug) {
CPlugin** a = &head;
@ -49,6 +52,25 @@ void CPluginMngr::unloadPlugin( CPlugin** a ) {
--pCounter;
}
void CPluginMngr::Finalize()
{
if (m_Finalized)
return;
pNatives = BuildNativeTable();
CPlugin *a = head;
while (a)
{
if (a->getStatusCode() == ps_running)
{
amx_Register(a->getAMX(), pNatives, -1);
a->Finalize();
}
a=a->next;
}
m_Finalized = true;
}
int CPluginMngr::loadPluginsFromFile( const char* filename )
{
char file[256];
@ -102,6 +124,12 @@ void CPluginMngr::clear() {
CPlugin**a = &head;
while ( *a )
unloadPlugin(a);
m_Finalized = false;
if (pNatives)
{
delete [] pNatives;
pNatives = NULL;
}
}
CPluginMngr::CPlugin* CPluginMngr::findPluginFast(AMX *amx)
@ -191,6 +219,31 @@ CPluginMngr::CPlugin::~CPlugin( )
unload_amxscript( &amx, &code );
}
void CPluginMngr::CPlugin::Finalize()
{
char buffer[128];
int old_status = status;
if (CheckModules(&amx, buffer))
{
if ( amx_Register(&amx, core_Natives, -1) != AMX_ERR_NONE )
{
status = ps_bad_load;
sprintf(buffer, "Plugin uses an unknown function (name \"%s\") - check your modules.ini.", no_function);
errorMsg.assign(buffer);
amx.error = AMX_ERR_NOTFOUND;
}
} else {
status = ps_bad_load;
errorMsg.assign(buffer);
amx.error = AMX_ERR_NOTFOUND;
}
if (old_status != status)
{
AMXXLOG_Log("[AMXX] Plugin \"%s\" failed to load: %s", name.c_str(), errorMsg.c_str());
}
}
void CPluginMngr::CPlugin::pauseFunction( int id ) {
if (isValid()){
paused_fun |= (1<<id);

7
amxmodx/CPlugin.h
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@ -93,6 +93,7 @@ public:
inline bool isPaused() const { return ( (status == ps_paused) || (status == ps_stopped)); }
//inline bool isFunctionPaused( int id ) const { return (paused_fun & (1<<id)) ? true : false; }
inline bool isExecutable(int id) const { return (isValid() && !isPaused()); }
void Finalize();
void pausePlugin();
void unpausePlugin();
void pauseFunction( int id );
@ -108,9 +109,12 @@ private:
public:
CPluginMngr() { head = 0; pCounter = 0; }
CPluginMngr() { head = 0; pCounter = 0; pNatives = NULL; m_Finalized=false;}
~CPluginMngr() { clear(); }
bool m_Finalized;
AMX_NATIVE_INFO *pNatives;
// Interface
CPlugin* loadPlugin(const char* path, const char* name, char* error, int debug);
@ -121,6 +125,7 @@ public:
CPlugin* findPlugin(int index);
CPlugin* findPlugin(const char* name);
inline int getPluginsNum() const { return pCounter; }
void Finalize();
void clear();
class iterator {

101
amxmodx/CStack.h Executable file
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@ -0,0 +1,101 @@
/* AMX Mod X
*
* by the AMX Mod X Development Team
* originally developed by OLO
*
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* In addition, as a special exception, the author gives permission to
* link the code of this program with the Half-Life Game Engine ("HL
* Engine") and Modified Game Libraries ("MODs") developed by Valve,
* L.L.C ("Valve"). You must obey the GNU General Public License in all
* respects for all of the code used other than the HL Engine and MODs
* from Valve. If you modify this file, you may extend this exception
* to your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from your
* version.
*/
//by David "BAILOPAN" Anderson
#ifndef _INCLUDE_CSTACK_H
#define _INCLUDE_CSTACK_H
template <class T>
class CStack
{
public:
struct CStackItem
{
public:
T item;
CStackItem *prev;
};
public:
CStack()
{
mSize = 0;
mStack = NULL;
}
~CStack()
{
CStackItem *p, *t;
p = mStack;
while (p)
{
t = p->prev;
delete p;
p = t;
}
mStack = NULL;
}
bool empty()
{
return (mSize==0);
}
void push(const T & v)
{
CStackItem *p = new CStackItem;
p->item = v;
p->prev = mStack;
mStack = p;
mSize++;
}
void pop()
{
CStackItem *p = mStack;
mStack = p->prev;
delete p;
mSize--;
}
T & top()
{
return mStack->item;
}
size_t size()
{
return mSize;
}
private:
CStackItem *mStack;
size_t mSize;
};
#endif //_INCLUDE_CQUEUE_H

BIN
amxmodx/JIT/natives-x86.o Executable file
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BIN
amxmodx/JIT/natives-x86.obj Executable file
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10
amxmodx/amx.cpp
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@ -1747,8 +1747,9 @@ static const void * const amx_opcodelist[] = {
if (amx->callback==NULL)
return AMX_ERR_CALLBACK;
if ((amx->flags & AMX_FLAG_NTVREG)==0)
return AMX_ERR_NOTFOUND;
if (!(amx->flags & AMX_FLAG_PRENIT))
if ((amx->flags & AMX_FLAG_NTVREG)==0)
return AMX_ERR_NOTFOUND;
if ((amx->flags & AMX_FLAG_RELOC)==0)
return AMX_ERR_INIT;
assert((amx->flags & AMX_FLAG_BROWSE)==0);
@ -2678,8 +2679,9 @@ int AMXAPI amx_Exec(AMX *amx, cell *retval, int index)
if (amx->callback==NULL)
return AMX_ERR_CALLBACK;
if ((amx->flags & AMX_FLAG_NTVREG)==0)
return AMX_ERR_NOTFOUND;
if (!(amx->flags & AMX_FLAG_PRENIT))
if ((amx->flags & AMX_FLAG_NTVREG)==0)
return AMX_ERR_NOTFOUND;
if ((amx->flags & AMX_FLAG_RELOC)==0)
return AMX_ERR_INIT;
assert((amx->flags & AMX_FLAG_BROWSE)==0);

1
amxmodx/amx.h
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@ -320,6 +320,7 @@ enum {
#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_PRENIT 0x100 /* pre-initialized, do not check natives */
#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 */

3
amxmodx/meta_api.cpp
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@ -33,6 +33,7 @@
#include "amxmodx.h"
#include "fakemeta.h"
#include "newmenus.h"
#include "natives.h"
plugin_info_t Plugin_info = {
META_INTERFACE_VERSION, // ifvers
@ -266,6 +267,7 @@ int C_Spawn( edict_t *pent ) {
// ###### Load AMX scripts
g_plugins.loadPluginsFromFile( get_localinfo("amxx_plugins", "addons/amxmodx/configs/plugins.ini") );
g_plugins.Finalize();
// Register forwards
FF_PluginInit = registerForward("plugin_init", ET_IGNORE, FP_DONE);
@ -454,6 +456,7 @@ void C_ServerDeactivate_Post() {
g_vault.clear();
g_xvars.clear();
g_plugins.clear();
ClearPluginLibraries();
char file[256];
g_langMngr.Save(build_pathname_r(file, sizeof(file)-1, "%s/languages.dat", get_localinfo("amxx_datadir", "addons/amxmodx/data")));
g_langMngr.SaveCache(build_pathname_r(file, sizeof(file)-1, "%s/dictionary.cache", get_localinfo("amxx_datadir", "addons/amxmodx/data")));

42
amxmodx/modules.cpp
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@ -41,6 +41,7 @@
#include "amxxfile.h"
#include "amxdbg.h"
#include "newmenus.h"
#include "natives.h"
CList<CModule,const char*> g_modules;
CList<CScript,AMX*> g_loadedscripts;
@ -439,7 +440,25 @@ int load_amxscript(AMX *amx, void **program, const char *filename, char error[64
}
g_loadedscripts.put( aa );
return set_amxnatives(amx,error);
set_amxnatives(amx,error);
if (g_plugins.m_Finalized)
{
amx_Register(amx, g_plugins.pNatives, -1);
if (CheckModules(amx, error))
{
if ( amx_Register(amx, core_Natives, -1) != AMX_ERR_NONE )
{
sprintf(error, "Plugin uses an unknown function (name \"%s\") - check your modules.ini.", no_function);
return (amx->error = AMX_ERR_NOTFOUND);
}
} else {
return (amx->error = AMX_ERR_NOTFOUND);
}
}
return (amx->error = AMX_ERR_NONE);
}
const char *StrCaseStr(const char *as, const char *bs)
@ -519,6 +538,8 @@ int CheckModules(AMX *amx, char error[128])
}
}
}
if (!found)
found = LibraryExists(buffer);
if (!found)
{
sprintf(error, "Module \"%s\" required for plugin. Check modules.ini.", buffer);
@ -546,19 +567,24 @@ int set_amxnatives(AMX* amx,char error[128])
amx_Register(amx, time_Natives, -1);
amx_Register(amx, vault_Natives, -1);
amx_Register(amx, g_NewMenuNatives, -1);
amx_Register(amx, g_NativeNatives, -1);
if (CheckModules(amx, error))
//we're not actually gonna check these here anymore
amx->flags |= AMX_FLAG_PRENIT;
int idx;
cell retval;
if (amx_FindPublic(amx, "plugin_natives", &idx)==AMX_ERR_NONE)
{
if ( amx_Register(amx, core_Natives, -1) != AMX_ERR_NONE )
if (amx_Exec(amx, &retval, idx)!=AMX_ERR_NONE)
{
sprintf(error, "Plugin uses an unknown function (name \"%s\") - check your modules.ini.", no_function);
return (amx->error = AMX_ERR_NATIVE);
//someday clear libraries that this added
}
return AMX_ERR_NONE;
}
return (amx->error = AMX_ERR_NATIVE);
amx->flags &= ~(AMX_FLAG_PRENIT);
return (amx->error = AMX_ERR_NONE);
}
int unload_amxscript(AMX* amx, void** program)

1
amxmodx/modules.h
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@ -48,5 +48,6 @@
#define RELOAD_MODULE 0
#define STATIC_MODULE 1
int CheckModules(AMX *amx, char error[128]);
#endif // __MODULES_H__

11
amxmodx/msvc/amxmodx_mm.vcproj
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@ -319,7 +319,7 @@
<Tool
Name="VCLinkerTool"
AdditionalOptions="/MACHINE:I386"
AdditionalDependencies="..\zlib\zlib.lib ..\JIT\amxjitsn.obj ..\JIT\amxexecn.obj"
AdditionalDependencies="..\zlib\zlib.lib ..\JIT\amxjitsn.obj ..\JIT\amxexecn.obj ..\JIT\natives-x86.obj"
OutputFile="jitdebug/amxmodx_mm.dll"
Version="0.1"
LinkIncremental="1"
@ -659,6 +659,9 @@
<File
RelativePath="..\modules.cpp">
</File>
<File
RelativePath="..\natives.cpp">
</File>
<File
RelativePath="..\newmenus.cpp">
</File>
@ -772,6 +775,9 @@
<File
RelativePath="..\CQueue.h">
</File>
<File
RelativePath="..\CStack.h">
</File>
<File
RelativePath="..\CString.h">
</File>
@ -796,6 +802,9 @@
<File
RelativePath="..\modules.h">
</File>
<File
RelativePath="..\natives.h">
</File>
<File
RelativePath="..\newmenus.h">
</File>

85
amxmodx/natives-amd64.asm Executable file
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@ -0,0 +1,85 @@
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; (C)2005 by David "BAILOPAN" Anderson ;
; register_native functions for amd64 ;;;;;;
; Based on the concept by Julien "dJeyL" Laurent ;
; Thanks to T(+)rget for pushing me to implement this ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;Licensed under the GNU General Public License, version 2
;;This is a portion of AMX Mod X
;; and is maintained by the AMX Mod X development team.
;;Initializes the global variable
BITS 64
section .text
global amxx_DynaInit, _amxx_DynaInit
;void amxx_DynaInit(void *ptr);
amxx_DynaInit:
_amxx_DynaInit:
mov rax, rdi ;get pointer, first param is in rdi
mov [GLOBAL_GATE], rax ;store
mov rax, 1
ret
;;Assembles the gateway function
global amxx_DynaMake, _amxx_DynaMake
;int amxx_DynaMake(char *buffer, int id);
amxx_DynaMake:
_amxx_DynaMake:
;we're not damaging the stack I think so we should be safe with no prologue
;save these two we're about to destroy them
push rsi ;push id
push rdi ;push buffer
mov rsi, _amxx_DynaFuncStart
mov rcx, _amxx_DynaFuncEnd - _amxx_DynaFuncStart
cld ;clear direction flag (just in case)
rep movsb
pop rdi ;get buffer as destination
pop rax ;get id
;align us to mov rsi, 1234... - on x86-64 this is 2 bytes after the differential
add rdi, (_amxx_DynaMoveOffset-_amxx_DynaFuncStart) + 2
mov [rdi], qword rax
mov rax, 1
ret
;;The gateway function we will re-assemble
;; This is similar to dJeyL's but a tad more elegant, as it's written in pure assembly
;; and NASM > GAS :')
global amxx_DynaFunc, _amxx_DynaFunc
;int amxx_DynaFunc(AMX *amx, cell *params);
amxx_DynaFunc:
_amxx_DynaFunc:
_amxx_DynaFuncStart:
push rbp
mov rbp, rsp
;we're given an amx and params... we're also hardcoded for this though:
mov rdx, rsi ;move 2nd param to 3rd
mov rsi, rdi ;move 1st param to 2nd
;this old trick, we'll move in the real pointer in a bit.
_amxx_DynaMoveOffset:
mov rsi, qword 1234567812345678h
call [GLOBAL_GATE] ;pass through teh global gateway.
pop rbp
ret
_amxx_DynaFuncEnd:
;;Just returns the buffer size required
global _amxx_DynaCodesize, amxx_DynaCodesize
;int amxx_DynaCodesize()
amxx_DynaCodesize:
_amxx_DynaCodesize:
; on x86 is this 17 bytes
mov rax, _amxx_DynaFuncEnd - _amxx_DynaFuncStart
ret
GLOBAL_GATE DQ 0

14
amxmodx/natives-x86.asm
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@ -1,7 +1,7 @@
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; (C)2005 by David "BAILOPAN" Anderson ;
; register_native functions for x86 ;;;;;;
; Based on the concept by Julien "dJeyL" Laurent ;
; (C)2005 by David "BAILOPAN" Anderson ;
; register_native functions for x86 ;;;;;;
; Based on the concept by Julien "dJeyL" Laurent ;
; Thanks to T(+)rget for pushing me to implement this ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@ -11,6 +11,8 @@
;;Initializes the global variable
section .text
global amxx_DynaInit, _amxx_DynaInit
;void amxx_DynaInit(void *ptr);
amxx_DynaInit:
@ -43,8 +45,8 @@ _amxx_DynaMake:
rep movsb
mov edi, [ebp+8] ;get buffer again
;align us to mov eax, 1234
add edi, _amxx_DynaMoveOffset + 1
;align us to mov eax, 1234 - on x86 this is 4 bytes
add edi, (_amxx_DynaMoveOffset-_amxx_DynaFuncStart) + 1
mov eax, [ebp+12]
mov [edi], eax
@ -73,6 +75,7 @@ _amxx_DynaMoveOffset:
push dword [ebp+8] ;push amx
push eax ;push the id
call [GLOBAL_GATE] ;pass through teh global gateway.
add esp, 12 ;reset stack oops
pop ebp
ret
@ -86,6 +89,7 @@ _amxx_DynaCodesize:
push ebp
mov ebp, esp
; on x86 is this 17 bytes
mov eax, _amxx_DynaFuncEnd - _amxx_DynaFuncStart
pop ebp

397
amxmodx/natives.cpp Executable file
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@ -0,0 +1,397 @@
#include "amxmodx.h"
#include "CStack.h"
#include "natives.h"
CVector<regnative *> g_RegNatives;
CStack<regnative *> g_NativeStack;
CVector<String> g_Libraries;
static char g_errorStr[512] = {0};
static int g_errorNum = 0;
bool g_Initialized = false;
int amxx_DynaCallback(int idx, AMX *amx, cell *params)
{
if (idx < 0 || idx >= (int)g_RegNatives.size())
{
LogError(amx, AMX_ERR_NATIVE, "Invalid dynamic native called");
return 0;
}
regnative *pNative = g_RegNatives[idx];
int numParams = params[0] / sizeof(cell);
if (numParams > CALLFUNC_MAXPARAMS)
{
LogError(amx, AMX_ERR_NATIVE, "Called dynanative with too many parameters (%d)", CALLFUNC_MAXPARAMS);
return 0;
}
//parameter stack
pNative->caller = amx;
CPluginMngr::CPlugin *pPlugin = g_plugins.findPluginFast(amx);
int err = 0;
cell ret = 0;
g_errorNum = 0;
g_NativeStack.push(pNative);
if (pNative->style == 0)
{
amx_Push(pNative->amx, numParams);
amx_Push(pNative->amx, pPlugin->getId());
for (int i=numParams; i>=1; i--)
pNative->params[i] = params[i];
} else if (pNative->style == 1) {
//use dJeyL's system .. very clever!
for (int i=numParams; i>=1; i--)
amx_Push(pNative->amx, params[i]);
}
if ( (err=amx_Exec(pNative->amx, &ret, pNative->func)) != AMX_ERR_NONE)
{
g_NativeStack.pop();
LogError(pNative->amx, err, "");
return 0;
}
if (g_errorNum)
{
g_NativeStack.pop();
LogError(amx, g_errorNum, g_errorStr);
return ret;
}
g_NativeStack.pop();
return ret;
}
AMX_NATIVE_INFO *BuildNativeTable()
{
if (g_RegNatives.size() < 1)
return NULL;
AMX_NATIVE_INFO *pNatives = new AMX_NATIVE_INFO[g_RegNatives.size() + 1];
AMX_NATIVE_INFO info;
regnative *pNative;
for (size_t i=0; i<g_RegNatives.size(); i++)
{
pNative = g_RegNatives[i];
info.name = pNative->name.c_str();
info.func = reinterpret_cast<AMX_NATIVE>(pNative->pfn);
pNatives[i] = info;
}
pNatives[g_RegNatives.size()].name = NULL;
pNatives[g_RegNatives.size()].func = NULL;
//this needs to be deleted
return pNatives;
}
static cell AMX_NATIVE_CALL log_error(AMX *amx, cell *params)
{
int len;
char *err = format_amxstring(amx, params, 2, len);
_snprintf(g_errorStr, sizeof(g_errorStr), "%s", err);
g_errorNum = params[1];
return 1;
}
//get_string(param, dest[], len)
static cell AMX_NATIVE_CALL get_string(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
int len;
char *str = get_amxstring(pNative->caller, pNative->params[p], 0, len);
return set_amxstring(amx, params[2], str, params[3]);
}
//set_string(param, source[], maxlen)
static cell AMX_NATIVE_CALL set_string(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
int len;
char *str = get_amxstring(amx, params[2], 0, len);
return set_amxstring(pNative->caller, pNative->params[p], str, params[3]);
}
//get a byvalue parameter
//get_param(num)
static cell AMX_NATIVE_CALL get_param(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
return pNative->params[p];
}
//get_param_byref(num)
static cell AMX_NATIVE_CALL get_param_byref(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
cell *addr = get_amxaddr(pNative->caller, pNative->params[p]);
return addr[0];
}
//set_param_byref(num, val)
static cell AMX_NATIVE_CALL set_param_byref(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
cell *addr = get_amxaddr(pNative->caller, pNative->params[p]);
addr[0] = params[2];
return 1;
}
//get_array(param, dest[], size)
static cell AMX_NATIVE_CALL get_array(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
cell *source = get_amxaddr(pNative->caller, pNative->params[p]);
cell *dest = get_amxaddr(amx, params[2]);
int size = params[3];
while (size-->0)
*dest = *source;
return 1;
}
//set_array(param, source[], size)
static cell AMX_NATIVE_CALL set_array(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
int p = params[1];
cell *dest = get_amxaddr(pNative->caller, pNative->params[p]);
cell *source = get_amxaddr(amx, params[2]);
int size = params[3];
while (size-->0)
*dest = *source;
return 1;
}
//This is basically right from dJeyL's lib_convert function
//This awesome hack modifies the stack frame to have an address offset
// that will align to the other plugin's memory.
//I've no idea how he thought of this, but it's great. No idea how well it works.
static cell AMX_NATIVE_CALL param_convert(AMX *amx, cell *params)
{
if (!g_NativeStack.size())
{
LogError(amx, AMX_ERR_NATIVE, "Not currently in a dynamic native");
return 0;
}
regnative *pNative = g_NativeStack.top();
if (pNative->style != 1)
{
LogError(amx, AMX_ERR_NATIVE, "Wrong style of dynamic native");
return 0;
}
cell p = params[1];
AMX *caller = pNative->caller;
unsigned char *data =amx->base+(int)((AMX_HEADER *)amx->base)->dat;
unsigned char *realdata = caller->base+(int)((AMX_HEADER *)caller->base)->dat;
* (cell *)(data+(int)amx->frm+(p+2)*sizeof(cell)) -= (cell)data-(cell)realdata;
return 1;
}
static cell AMX_NATIVE_CALL register_library(AMX *amx, cell *params)
{
int len;
char *lib = get_amxstring(amx, params[1], 0, len);
AddPluginLibrary(lib);
return 1;
}
//register_native(const name[], const handler[])
static cell AMX_NATIVE_CALL register_native(AMX *amx, cell *params)
{
if (!g_Initialized)
amxx_DynaInit(static_cast<void *>(amxx_DynaCallback));
g_Initialized = true;
int len;
char *name = get_amxstring(amx, params[1], 0, len);
char *func = get_amxstring(amx, params[2], 1, len);
int idx, err;
if ( (err=amx_FindPublic(amx, func, &idx)) != AMX_ERR_NONE)
{
LogError(amx, err, "Function \"%s\" was not found", func);
return 0;
}
regnative *pNative = new regnative;
pNative->amx = amx;
pNative->func = idx;
//we'll apply a safety buffer too
//make our function
int size = amxx_DynaCodesize();
#ifndef __linux__
DWORD temp;
pNative->pfn = new char[size + 10];
VirtualProtect(pNative->pfn, size+10, PAGE_EXECUTE_READWRITE, &temp);
#else
pNative->pfn = (unsigned char *)memalign(sysconf(_SC_PAGESIZE), amx->code_size);
mprotect((void *)pNative->pfn, size+10, PROT_READ|PROT_WRITE|PROT_EXEC);
#endif
int id = (int)g_RegNatives.size();
amxx_DynaMake(pNative->pfn, id);
pNative->func = idx;
pNative->style = params[3];
g_RegNatives.push_back(pNative);
pNative->name.assign(name);
return 1;
}
bool LibraryExists(const char *name)
{
for (size_t i=0; i<g_Libraries.size(); i++)
{
if (stricmp(g_Libraries[i].c_str(), name)==0)
return true;
}
return false;
}
void AddPluginLibrary(const char *name)
{
String f(name);
g_Libraries.push_back(f);
}
void ClearPluginLibraries()
{
g_Libraries.clear();
for (size_t i=0; i<g_RegNatives.size(); i++)
{
delete g_RegNatives[i]->pfn;
delete g_RegNatives[i];
}
g_RegNatives.clear();
}
AMX_NATIVE_INFO g_NativeNatives[] = {
{"register_native", register_native},
{"log_error", log_error},
{"register_library",register_library},
{"get_string", get_string},
{"set_string", set_string},
{"get_param", get_param},
{"get_param_byref", get_param_byref},
{"set_param_byref", set_param_byref},
{"get_array", set_array},
{"set_array", set_array},
//these are dummy functions for floats ;p
{"get_param_f", get_param},
{"get_float_byref", get_param_byref},
{"set_float_byref", set_param_byref},
{"get_array_f", get_array},
{"set_array_f", set_array},
{"param_convert", param_convert},
//////////////////////////
{NULL, NULL},
};

39
amxmodx/natives.h Executable file
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#ifndef _INCLUDE_NATIVES_H
#define _INCLUDE_NATIVES_H
//only 16 for now sorry
#define CALLFUNC_MAXPARAMS 16
#define CALLFUNC_FLAG_BYREF 1
#define CALLFUNC_FLAG_BYREF_REUSED 2
#define N_CELL 1
#define N_ARRAY 2
#define N_BYREF 3
#define N_VARARG 4
struct regnative
{
AMX *amx;
String name;
char *pfn;
int func;
AMX *caller;
int style;
cell params[CALLFUNC_MAXPARAMS];
};
extern "C" void amxx_DynaInit(void *ptr);
extern "C" void amxx_DynaMake(char *buffer, int id);
extern "C" int amxx_DynaFunc(AMX *amx, cell *params);
extern "C" int amxx_DynaCodesize();
AMX_NATIVE_INFO *BuildNativeTable();
void AddPluginLibrary(const char *name);
void ClearPluginLibraries();
bool LibraryExists(const char *name);
//I couldn't resist :)
extern AMX_NATIVE_INFO g_NativeNatives[];
#endif //_INCLUDE_NATIVES_H