391 lines
13 KiB
C
391 lines
13 KiB
C
/*
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* $Id$
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*/
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/*
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Harbour Project source code
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Harbour HRB (Portable Object) Generation.
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Copyright 1999 Eddie Runia <eddie@runia.com>
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www - http://www.harbour-project.org
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version, with one exception:
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The exception is that if you link the Harbour Runtime Library (HRL)
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and/or the Harbour Virtual Machine (HVM) with other files to produce
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an executable, this does not by itself cause the resulting executable
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to be covered by the GNU General Public License. Your use of that
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executable is in no way restricted on account of linking the HRL
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and/or HVM code into it.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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their web site at http://www.gnu.org/).
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*/
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#include "extend.h"
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#include "compiler.h"
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#include "pcode.h"
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#include "hberrors.h"
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#define SYM_NOLINK 0 /* Symbol does not have to be linked */
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#define SYM_FUNC 1 /* Defined function */
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#define SYM_EXTERN 2 /* Previously defined function */
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void GenPortObj( PHB_FNAME pFileName )
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{
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char szFileName[ _POSIX_PATH_MAX ];
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PFUNCTION pFunc /*= functions.pFirst */;
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PCOMSYMBOL pSym = symbols.pFirst;
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WORD w, wLen, wVar;
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LONG lPCodePos;
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LONG lPad;
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LONG lSymbols;
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BOOL bEndProcReq;
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ULONG ulCodeLength;
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FILE * yyc; /* file handle for C output */
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if( ! pFileName->szExtension )
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pFileName->szExtension =".hrb";
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hb_fsFNameMerge( szFileName, pFileName );
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yyc = fopen( szFileName, "wb" );
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if( ! yyc )
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{
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GenError( _szCErrors, 'E', ERR_CREATE_OUTPUT, szFileName, NULL );
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return;
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}
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if( ! _bQuiet )
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{
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printf( "\nGenerating Harbour Portable Object output to \'%s\'... ", szFileName );
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fflush( stdout );
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}
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/* writes the symbol table */
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if( ! _bStartProc )
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pSym = pSym->pNext; /* starting procedure is always the first symbol */
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lSymbols = 0; /* Count number of symbols */
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while( pSym )
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{
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lSymbols++;
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pSym = pSym->pNext;
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}
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fputc( ( BYTE ) ( ( lSymbols ) & 255 ), yyc ); /* Write number symbols */
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fputc( ( BYTE ) ( ( lSymbols >> 8 ) & 255 ), yyc );
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fputc( ( BYTE ) ( ( lSymbols >> 16 ) & 255 ), yyc );
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fputc( ( BYTE ) ( ( lSymbols >> 24 ) & 255 ), yyc );
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pSym = symbols.pFirst;
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if( ! _bStartProc )
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pSym = pSym->pNext; /* starting procedure is always the first symbol */
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while( pSym )
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{
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fputs( pSym->szName, yyc );
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fputc( 0, yyc );
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if( pSym->cScope != FS_MESSAGE )
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fputc( pSym->cScope, yyc );
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else
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fputc( 0, yyc );
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/* specify the function address if it is a defined function or a
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external called function */
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if( GetFunction( pSym->szName ) ) /* is it a defined function ? */
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{
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fputc( SYM_FUNC, yyc );
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}
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else
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{
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if( GetFuncall( pSym->szName ) )
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{
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fputc( SYM_EXTERN, yyc );
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}
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else
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{
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fputc( SYM_NOLINK, yyc );
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}
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}
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pSym = pSym->pNext;
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}
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pFunc = functions.pFirst;
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if( ! _bStartProc )
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pFunc = pFunc->pNext;
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lSymbols = 0; /* Count number of symbols */
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while( pFunc )
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{
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lSymbols++;
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pFunc = pFunc->pNext;
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}
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fputc( ( BYTE ) ( ( lSymbols ) & 255 ), yyc ); /* Write number symbols */
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fputc( ( BYTE ) ( ( lSymbols >> 8 ) & 255 ), yyc );
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fputc( ( BYTE ) ( ( lSymbols >> 16 ) & 255 ), yyc );
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fputc( ( BYTE ) ( ( lSymbols >> 24 ) & 255 ), yyc );
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/* Generate functions data
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*/
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pFunc = functions.pFirst;
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if( ! _bStartProc )
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pFunc = pFunc->pNext; /* No implicit starting procedure */
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while( pFunc )
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{
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fputs( pFunc->szName, yyc );
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fputc( 0, yyc );
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/* We will have to add HB_P_ENDPROC in cases when RETURN statement
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* was not used in a function/procedure - this is why we have to reserve
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* one additional byte
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*/
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ulCodeLength = pFunc->lPCodePos + 1;
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fputc( ( BYTE ) ( ( ulCodeLength ) & 255 ), yyc ); /* Write size */
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fputc( ( BYTE ) ( ( ulCodeLength >> 8 ) & 255 ), yyc );
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fputc( ( BYTE ) ( ( ulCodeLength >> 16 ) & 255 ), yyc );
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fputc( ( BYTE ) ( ( ulCodeLength >> 24 ) & 255 ), yyc );
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/* printf( "Creating output for %s\n", pFunc->szName ); */
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lPCodePos = 0;
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lPad = 0; /* Number of bytes optimized */
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bEndProcReq = TRUE;
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while( lPCodePos < pFunc->lPCodePos )
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{
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switch( pFunc->pCode[ lPCodePos ] )
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{
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case HB_P_AND:
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case HB_P_ARRAYAT:
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case HB_P_ARRAYPUT:
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case HB_P_DEC:
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case HB_P_DIVIDE:
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case HB_P_DUPLICATE:
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case HB_P_DUPLTWO:
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case HB_P_ENDBLOCK:
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case HB_P_EQUAL:
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case HB_P_EXACTLYEQUAL:
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case HB_P_FALSE:
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case HB_P_FORTEST:
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case HB_P_FUNCPTR:
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case HB_P_GREATER:
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case HB_P_GREATEREQUAL:
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case HB_P_INC:
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case HB_P_INSTRING:
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case HB_P_LESS:
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case HB_P_LESSEQUAL:
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case HB_P_MINUS:
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case HB_P_MODULUS:
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case HB_P_MULT:
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case HB_P_NEGATE:
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case HB_P_NOT:
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case HB_P_NOTEQUAL:
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case HB_P_OR:
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case HB_P_PLUS:
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case HB_P_POP:
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case HB_P_POPALIAS:
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case HB_P_POWER:
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case HB_P_PUSHALIAS:
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case HB_P_PUSHNIL:
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case HB_P_PUSHSELF:
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case HB_P_RETVALUE:
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case HB_P_SWAPALIAS:
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case HB_P_SEQRECOVER:
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case HB_P_TRUE:
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case HB_P_ZERO:
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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break;
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case HB_P_DIMARRAY:
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case HB_P_DO:
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case HB_P_FUNCTION:
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case HB_P_GENARRAY:
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case HB_P_JUMP:
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case HB_P_JUMPFALSE:
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case HB_P_JUMPTRUE:
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case HB_P_LINE:
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case HB_P_POPLOCAL:
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case HB_P_POPSTATIC:
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case HB_P_PUSHINT:
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case HB_P_PUSHLOCAL:
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case HB_P_PUSHLOCALREF:
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case HB_P_PUSHSTATIC:
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case HB_P_PUSHSTATICREF:
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case HB_P_SEQBEGIN:
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case HB_P_SEQEND:
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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break;
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case HB_P_ENDPROC:
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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if( lPCodePos == pFunc->lPCodePos )
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bEndProcReq = FALSE;
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break;
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case HB_P_FRAME:
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/* update the number of local variables */
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{
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PVAR pLocal = pFunc->pLocals;
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BYTE bLocals = 0;
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while( pLocal )
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{
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pLocal = pLocal->pNext;
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bLocals++;
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}
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if( bLocals || pFunc->wParamCount )
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{
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( ( BYTE )( bLocals - pFunc->wParamCount ), yyc );
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fputc( ( BYTE )( pFunc->wParamCount ), yyc );
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lPCodePos += 2;
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}
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else
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{
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lPad += 3;
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lPCodePos += 3;
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}
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}
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break;
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case HB_P_PUSHSYM:
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case HB_P_MESSAGE:
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case HB_P_POPMEMVAR:
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case HB_P_PUSHMEMVAR:
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case HB_P_PUSHMEMVARREF:
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case HB_P_POPFIELD:
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case HB_P_PUSHFIELD:
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case HB_P_POPALIASEDFIELD:
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case HB_P_PUSHALIASEDFIELD:
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fputc( pFunc->pCode[ lPCodePos ], yyc );
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wVar = FixSymbolPos( pFunc->pCode[ lPCodePos + 1 ] + 256 * pFunc->pCode[ lPCodePos + 2 ] );
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fputc( LOBYTE( wVar ), yyc );
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fputc( HIBYTE( wVar ), yyc );
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lPCodePos += 3;
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break;
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case HB_P_PARAMETER:
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fputc( pFunc->pCode[ lPCodePos ], yyc );
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wVar = FixSymbolPos( pFunc->pCode[ lPCodePos + 1 ] + 256 * pFunc->pCode[ lPCodePos + 2 ] );
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fputc( LOBYTE( wVar ), yyc );
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fputc( HIBYTE( wVar ), yyc );
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fputc( pFunc->pCode[ lPCodePos + 3 ], yyc );
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lPCodePos +=4;
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break;
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case HB_P_PUSHBLOCK:
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wVar = * ( ( WORD * ) &( pFunc->pCode [ lPCodePos + 5 ] ) );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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/* create the table of referenced local variables */
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while( wVar-- )
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{
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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}
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break;
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case HB_P_PUSHDOUBLE:
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{
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int i;
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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for( i = 0; i < sizeof( double ); ++i )
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fputc( ( ( BYTE * ) pFunc->pCode )[ lPCodePos + i ], yyc );
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fputc( pFunc->pCode[ lPCodePos + sizeof( double ) ], yyc );
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lPCodePos += sizeof( double ) + 1;
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}
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break;
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case HB_P_PUSHLONG:
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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break;
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case HB_P_PUSHSTR:
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wLen = pFunc->pCode[ lPCodePos + 1 ] +
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pFunc->pCode[ lPCodePos + 2 ] * 256;
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fputc( pFunc->pCode[ lPCodePos ], yyc );
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fputc( pFunc->pCode[ lPCodePos + 1 ], yyc );
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fputc( pFunc->pCode[ lPCodePos + 2 ], yyc );
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lPCodePos += 3;
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while( wLen-- )
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fputc( pFunc->pCode[ lPCodePos++ ], yyc );
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break;
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case HB_P_SFRAME:
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/* we only generate it if there are statics used in this function */
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if( pFunc->bFlags & FUN_USES_STATICS )
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{
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GetSymbol( _pInitFunc->szName, &w );
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w = FixSymbolPos( w );
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fputc( pFunc->pCode[ lPCodePos ], yyc );
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fputc( LOBYTE( w ), yyc );
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fputc( HIBYTE( w ), yyc );
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}
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else
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lPad += 3;
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lPCodePos += 3;
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break;
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case HB_P_STATICS:
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GetSymbol( _pInitFunc->szName, &w );
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w = FixSymbolPos( w );
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fputc( pFunc->pCode[ lPCodePos ], yyc );
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fputc( LOBYTE( w ), yyc );
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fputc( HIBYTE( w ), yyc );
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lPCodePos += 3;
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break;
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default:
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printf( "Incorrect pcode value: %u\n", pFunc->pCode[ lPCodePos ] );
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lPCodePos = pFunc->lPCodePos;
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break;
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}
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}
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if( bEndProcReq )
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fputc( HB_P_ENDPROC, yyc );
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else
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{
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/* HB_P_ENDPROC was the last opcode: we have to fill the byte
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* reserved earlier
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*/
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lPad++;
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}
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for( ; lPad; lPad-- )
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{
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/* write additional bytes to agree with stored earlier
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* function/procedure size
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*/
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fputc( 0, yyc );
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}
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pFunc = pFunc->pNext;
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}
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fclose( yyc );
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if( ! _bQuiet )
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printf( "Done.\n" );
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}
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