newlisp/win-dll.c

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2016-06-11 17:22:37 +00:00
/* win-dll.c - make the newlisp.exe usable as a DLL
Copyright (C) 2011 Lutz Mueller
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "newlisp.h"
#include "protos.h"
#include <winsock2.h>
#define EXPORT __declspec(dllexport) __stdcall
extern int bigEndian;
extern char preLoad[];
extern CELL * sysEvalString(char * str, SYMBOL * context, CELL * proc, int mode);
extern char linkOffset[];
extern int evalSilent;
extern int opsys;
extern SYMBOL * mainArgsSymbol;
extern FILE * IOchannel;
extern int newlispLibConsoleFlag;
int dllInitialized = 0;
WSADATA WSAData;
char libName[MAX_LINE] = "newlisp.dll";
void initializeMain(void)
{
char name[MAX_LINE];
char * initFile;
WSAStartup(MAKEWORD(2,2), &WSAData);
_setmode(_fileno(stdin), _O_BINARY);
_setmode(_fileno(stdout), _O_BINARY);
_setmode(_fileno(stderr), _O_BINARY);
opsys += 64;
#ifdef SUPPORT_UTF8
opsys += 128;
#endif
#ifdef NEWLISP64
opsys += 256;
#endif
#ifdef FFI
opsys += 1024;
initFFI();
#endif
bigEndian = (*((char *)&bigEndian) == 0);
initLocale();
initStacks();
initialize();
IOchannel = stdin;
mainArgsSymbol->contents = (UINT)makeCell(CELL_EXPRESSION, (UINT)stuffString(libName));
sysEvalString(preLoad, mainContext, nilCell, EVAL_STRING);
initFile = getenv("NEWLISPLIB_INIT");
if(initFile)
{
strncpy(name, initFile, MAX_LINE);
name[MAX_LINE - 1] = 0;
loadFile(name, 0, 0, mainContext);
}
if(strncmp(linkOffset + 4, "@@@@", 4)) /* contains linked source */
{
GetModuleFileName(GetModuleHandle(libName), name, MAX_LINE);
loadFile(name, *(UINT*)linkOffset, 1, mainContext);
}
dllInitialized = 1;
reset();
}
/* ------------ initialize DLL (gets called by Windows) ----------------- */
extern STREAM errorStream;
STREAM libStrStream = {NULL, NULL, 0, 0, 0};
int CALLBACK LibMain(HANDLE hModule, WORD wDataSeg, WORD cbHeapSize, LPSTR lpszCmdLine)
{
return 1;
}
/* called automatically from nl-import when DLL is loaded from newLISP */
int EXPORT dllName(LPSTR name)
{
strncpy(libName, name, MAX_LINE);
return(1);
}
/* import and call this to create a console for stdio - debugging I/O */
int EXPORT debugConsole() {
IOchannel = stdin;
if(!AllocConsole())
return(0);
if(freopen("CONOUT$","w+t",stdout) == NULL) return(0);
if(freopen("CONIN$","r+t",stdin) == NULL) return(0);
return(1);
}
/* ---- imported and called from a client using newlisp.dll ---- */
LPSTR EXPORT newlispEvalStr(LPSTR cmd)
{
if(!dllInitialized) initializeMain();
if(setjmp(errorJump))
{
reset();
initStacks();
if(errorReg)
{
executeSymbol(errorEvent, NULL, NULL);
return((LPSTR)libStrStream.buffer);
}
else
return((LPSTR)errorStream.buffer);
}
openStrStream(&libStrStream, MAX_STRING, 1);
executeCommandLine(cmd, (UINT)&libStrStream, NULL);
if(evalSilent) evalSilent = 0;
return((LPSTR)libStrStream.buffer);
}
LPSTR EXPORT dllEvalStr(LPSTR cmd)
{
return(newlispEvalStr(cmd));
}
/* don't let stdout be included in return string */
int EXPORT newlispLibConsole(int flag)
{
newlispLibConsoleFlag = flag;
return(flag);
}
/* callbacks from newlisp library into caller
currently only tested with newLISP as caller:
(import "newlisp.dylib" "newlispEvalStr")
(import "newlisp.dylib" "newlispCallback")
(define (callme p1 p2 p3) (println "p1 => " p1 " p2 => " p2 " p3 => " p3) "hello world")
(newlispCallback "callme" (callback 0 'callme) "cdecl")
(get-string (newlispEvalStr {(get-string (callme 123 456 789))})) ; for string return
;(get-string (newlispEvalStr {(callme 123 456 789)})) ; for number return
*/
intptr_t EXPORT newlispCallback(char * funcName, intptr_t funcAddr, char * callType)
{
CELL * pCell;
SYMBOL * symbol;
if(!dllInitialized) initializeMain();
if(callType != NULL && strcmp(callType, "cdecl") == 0)
pCell = getCell(CELL_IMPORT_CDECL);
else
pCell = getCell(CELL_IMPORT_DLL);
symbol = translateCreateSymbol(funcName, pCell->type, currentContext, TRUE);
if(isProtected(symbol->flags))
{
errorProcExt2(ERR_SYMBOL_PROTECTED, stuffSymbol(symbol));
return(-1);
}
deleteList((CELL *)symbol->contents);
symbol->contents = (UINT)pCell;
pCell->contents = (UINT)funcAddr;
pCell->aux = (UINT)symbol->name;
return(funcAddr);
}
/* ------------ called from Windows when unloading DLL ------------------ */
int EXPORT WEP (int bSystemExit)
{
return(1);
}
/* eof */