/* * $Id$ */ /* * Harbour Project source code: * Compiler main file * * Copyright 2000 Ryszard Glab * www - http://www.harbour-project.org * * 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, with one exception: * * The exception is that if you link the Harbour Runtime Library (HRL) * and/or the Harbour Virtual Machine (HVM) with other files to produce * an executable, this does not by itself cause the resulting executable * to be covered by the GNU General Public License. Your use of that * executable is in no way restricted on account of linking the HRL * and/or HVM code into it. * * 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., 675 Mass Ave, Cambridge, MA 02139, USA (or visit * their web site at http://www.gnu.org/). * */ #include #include "hbcomp.h" /* helper structure to pass information */ typedef struct HB_stru_fix_info { USHORT iNestedCodeblock; } HB_FIX_INFO, * HB_FIX_INFO_PTR; #define HB_FIX_FUNC( func ) HB_PCODE_FUNC( func, HB_FIX_INFO_PTR ) typedef HB_FIX_FUNC( HB_FIX_FUNC_ ); typedef HB_FIX_FUNC_ * HB_FIX_FUNC_PTR; static HB_FIX_FUNC( hb_p_pushstr ) { HB_SYMBOL_UNUSED( cargo ); return 3 + pFunc->pCode[ lPCodePos + 1 ] + pFunc->pCode[ lPCodePos + 2 ] * 256; } static HB_FIX_FUNC( hb_p_pushstrshort ) { HB_SYMBOL_UNUSED( cargo ); return 2 + pFunc->pCode[ lPCodePos + 1 ]; } static HB_FIX_FUNC( hb_p_endblock ) { HB_SYMBOL_UNUSED( pFunc ); HB_SYMBOL_UNUSED( lPCodePos ); --cargo->iNestedCodeblock; return 1; } static HB_FIX_FUNC( hb_p_pushblock ) { USHORT wVar; USHORT * pLocal; ULONG ulStart = lPCodePos; ++cargo->iNestedCodeblock; wVar = * ( ( USHORT * ) &( pFunc->pCode [ lPCodePos + 5 ] ) ); /* opcode + codeblock size + number of parameters + number of local variables */ lPCodePos += 7; /* fix local variable's reference */ while( wVar-- ) { pLocal = ( USHORT * ) &( pFunc->pCode [ lPCodePos ] ); *pLocal += pFunc->wParamCount; lPCodePos +=2; } return (USHORT) (lPCodePos - ulStart); } static HB_FIX_FUNC( hb_p_pushblockshort ) { HB_SYMBOL_UNUSED( pFunc ); HB_SYMBOL_UNUSED( lPCodePos ); ++cargo->iNestedCodeblock; return 2; } static HB_FIX_FUNC( hb_p_localname ) { ULONG ulStart = lPCodePos; HB_SYMBOL_UNUSED( cargo ); lPCodePos += 3; while( pFunc->pCode[ lPCodePos ] ) ++lPCodePos; return (USHORT) (lPCodePos - ulStart + 1) ; } static HB_FIX_FUNC( hb_p_modulename ) { ULONG ulStart = lPCodePos; HB_SYMBOL_UNUSED( cargo ); lPCodePos += 3; while( pFunc->pCode[ lPCodePos ] ) ++lPCodePos; return (USHORT) (lPCodePos - ulStart + 1); } static HB_FIX_FUNC( hb_p_poplocal ) { if( cargo->iNestedCodeblock == 0 ) { /* only local variables used outside of a codeblock need fixing */ SHORT * pVar = ( SHORT * ) &( pFunc->pCode )[ lPCodePos + 1 ]; *pVar += pFunc->wParamCount; } return (USHORT) 3; } static HB_FIX_FUNC( hb_p_pushlocal ) { if( cargo->iNestedCodeblock == 0 ) { /* only local variables used outside of a codeblock need fixing */ SHORT * pVar = ( SHORT * ) &( pFunc->pCode )[ lPCodePos + 1 ]; *pVar += pFunc->wParamCount; } return (USHORT) 3; } static HB_FIX_FUNC( hb_p_pushlocalref ) { if( cargo->iNestedCodeblock == 0 ) { /* only local variables used outside of a codeblock need fixing */ SHORT * pVar = ( SHORT * ) &( pFunc->pCode )[ lPCodePos + 1 ]; *pVar += pFunc->wParamCount; } return (USHORT) 3; } static HB_FIX_FUNC( hb_p_poplocalnear ) { if( cargo->iNestedCodeblock == 0 ) { /* only local variables used outside of a codeblock need fixing */ SHORT * pVar = ( SHORT * ) &( pFunc->pCode )[ lPCodePos + 1 ]; *pVar += pFunc->wParamCount; if( *pVar >= -128 && *pVar <= 127 ) { pFunc->pCode[ lPCodePos + 2 ] = HB_P_NOOP; hb_compNOOPadd( pFunc, lPCodePos + 2 ); } else { /* After fixing this variable cannot be accessed using near code */ pFunc->pCode[ lPCodePos ] = HB_P_POPLOCAL; } } return (USHORT) 3; } static HB_FIX_FUNC( hb_p_pushlocalnear ) { if( cargo->iNestedCodeblock == 0 ) { /* only local variables used outside of a codeblock need fixing */ SHORT * pVar = ( SHORT * ) &( pFunc->pCode )[ lPCodePos + 1 ]; *pVar += pFunc->wParamCount; if( *pVar >= -128 && *pVar <= 127 ) { pFunc->pCode[ lPCodePos + 2 ] = HB_P_NOOP; hb_compNOOPadd( pFunc, lPCodePos + 2 ); } else { /* After fixing this variable cannot be accessed using near code */ pFunc->pCode[ lPCodePos ] = HB_P_PUSHLOCAL; } } return (USHORT) 3; } static HB_FIX_FUNC( hb_p_staticname ) { ULONG ulStart = lPCodePos; HB_SYMBOL_UNUSED( cargo ); lPCodePos += 3; while( pFunc->pCode[ lPCodePos ] ) ++lPCodePos; return (USHORT) (lPCodePos - ulStart + 1) ; } /* NOTE: The order of functions have to match the order of opcodes * mnemonics */ static HB_FIX_FUNC_PTR s_fixlocals_table[] = { NULL, /* HB_P_AND, */ NULL, /* HB_P_ARRAYPUSH, */ NULL, /* HB_P_ARRAYPOP, */ NULL, /* HB_P_ARRAYDIM, */ NULL, /* HB_P_ARRAYGEN, */ NULL, /* HB_P_EQUAL, */ hb_p_endblock, /* HB_P_ENDBLOCK, */ NULL, /* HB_P_ENDPROC, */ NULL, /* HB_P_EXACTLYEQUAL, */ NULL, /* HB_P_FALSE, */ NULL, /* HB_P_FORTEST, */ NULL, /* HB_P_FUNCTION, */ NULL, /* HB_P_FUNCTIONSHORT, */ NULL, /* HB_P_FRAME, */ NULL, /* HB_P_FUNCPTR, */ NULL, /* HB_P_GREATER, */ NULL, /* HB_P_GREATEREQUAL, */ NULL, /* HB_P_DEC, */ NULL, /* HB_P_DIVIDE, */ NULL, /* HB_P_DO, */ NULL, /* HB_P_DOSHORT, */ NULL, /* HB_P_DUPLICATE, */ NULL, /* HB_P_DUPLTWO, */ NULL, /* HB_P_INC, */ NULL, /* HB_P_INSTRING, */ NULL, /* HB_P_JUMPNEAR, */ NULL, /* HB_P_JUMP, */ NULL, /* HB_P_JUMPFAR, */ NULL, /* HB_P_JUMPFALSENEAR, */ NULL, /* HB_P_JUMPFALSE, */ NULL, /* HB_P_JUMPFALSEFAR, */ NULL, /* HB_P_JUMPTRUENEAR, */ NULL, /* HB_P_JUMPTRUE, */ NULL, /* HB_P_JUMPTRUEFAR, */ NULL, /* HB_P_LESSEQUAL, */ NULL, /* HB_P_LESS, */ NULL, /* HB_P_LINE, */ hb_p_localname, /* HB_P_LOCALNAME, */ NULL, /* HB_P_MACROPOP, */ NULL, /* HB_P_MACROPOPALIASED, */ NULL, /* HB_P_MACROPUSH, */ NULL, /* HB_P_MACROPUSHALIASED, */ NULL, /* HB_P_MACROSYMBOL, */ NULL, /* HB_P_MACROTEXT, */ NULL, /* HB_P_MESSAGE, */ NULL, /* HB_P_MINUS, */ NULL, /* HB_P_MODULUS, */ hb_p_modulename, /* HB_P_MODULENAME, */ /* start: pcodes generated by macro compiler */ NULL, /* HB_P_MMESSAGE, */ NULL, /* HB_P_MPOPALIASEDFIELD, */ NULL, /* HB_P_MPOPALIASEDVAR, */ NULL, /* HB_P_MPOPFIELD, */ NULL, /* HB_P_MPOPMEMVAR, */ NULL, /* HB_P_MPUSHALIASEDFIELD, */ NULL, /* HB_P_MPUSHALIASEDVAR, */ NULL, /* HB_P_MPUSHBLOCK, */ NULL, /* HB_P_MPUSHFIELD, */ NULL, /* HB_P_MPUSHMEMVAR, */ NULL, /* HB_P_MPUSHMEMVARREF, */ NULL, /* HB_P_MPUSHSYM, */ NULL, /* HB_P_MPUSHVARIABLE, */ /* end: */ NULL, /* HB_P_MULT, */ NULL, /* HB_P_NEGATE, */ NULL, /* HB_P_NOOP, */ NULL, /* HB_P_NOT, */ NULL, /* HB_P_NOTEQUAL, */ NULL, /* HB_P_OR, */ NULL, /* HB_P_PARAMETER, */ NULL, /* HB_P_PLUS, */ NULL, /* HB_P_POP, */ NULL, /* HB_P_POPALIAS, */ NULL, /* HB_P_POPALIASEDFIELD, */ NULL, /* HB_P_POPALIASEDFIELDNEAR, */ NULL, /* HB_P_POPALIASEDVAR, */ NULL, /* HB_P_POPFIELD, */ hb_p_poplocal, /* HB_P_POPLOCAL, */ hb_p_poplocalnear, /* HB_P_POPLOCALNEAR, */ NULL, /* HB_P_POPMEMVAR, */ NULL, /* HB_P_POPSTATIC, */ NULL, /* HB_P_POPVARIABLE, */ NULL, /* HB_P_POWER, */ NULL, /* HB_P_PUSHALIAS, */ NULL, /* HB_P_PUSHALIASEDFIELD, */ NULL, /* HB_P_PUSHALIASEDFIELDNEAR, */ NULL, /* HB_P_PUSHALIASEDVAR, */ hb_p_pushblock, /* HB_P_PUSHBLOCK, */ hb_p_pushblockshort, /* HB_P_PUSHBLOCKSHORT, */ NULL, /* HB_P_PUSHFIELD, */ NULL, /* HB_P_PUSHBYTE, */ NULL, /* HB_P_PUSHINT, */ hb_p_pushlocal, /* HB_P_PUSHLOCAL, */ hb_p_pushlocalnear, /* HB_P_PUSHLOCALNEAR, */ hb_p_pushlocalref, /* HB_P_PUSHLOCALREF, */ NULL, /* HB_P_PUSHLONG, */ NULL, /* HB_P_PUSHMEMVAR, */ NULL, /* HB_P_PUSHMEMVARREF, */ NULL, /* HB_P_PUSHNIL, */ NULL, /* HB_P_PUSHDOUBLE, */ NULL, /* HB_P_PUSHSELF, */ NULL, /* HB_P_PUSHSTATIC, */ NULL, /* HB_P_PUSHSTATICREF, */ hb_p_pushstr, /* HB_P_PUSHSTR, */ hb_p_pushstrshort, /* HB_P_PUSHSTRSHORT, */ NULL, /* HB_P_PUSHSYM, */ NULL, /* HB_P_PUSHSYMNEAR, */ NULL, /* HB_P_PUSHVARIABLE, */ NULL, /* HB_P_RETVALUE, */ NULL, /* HB_P_SEND, */ NULL, /* HB_P_SENDSHORT, */ NULL, /* HB_P_SEQBEGIN, */ NULL, /* HB_P_SEQEND, */ NULL, /* HB_P_SEQRECOVER, */ NULL, /* HB_P_SFRAME, */ NULL, /* HB_P_STATICS, */ hb_p_staticname, /* HB_P_STATICNAME, */ NULL, /* HB_P_SWAPALIAS, */ NULL, /* HB_P_TRUE, */ NULL, /* HB_P_ZERO, */ NULL /* HB_P_ONE, */ }; void hb_compFixFuncPCode( PFUNCTION pFunc ) { HB_FIX_INFO fix_info; fix_info.iNestedCodeblock = 0; assert( HB_P_LAST_PCODE == sizeof( s_fixlocals_table ) / sizeof( HB_FIX_FUNC_PTR ) ); hb_compPCodeEval( pFunc, ( HB_PCODE_FUNC_PTR * ) s_fixlocals_table, ( void * ) &fix_info ); }