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119 lines
3.8 KiB
C
Executable File
119 lines
3.8 KiB
C
Executable File
/* $Id: return.h,v 1.2 1999/01/03 02:06:22 sybalsky Exp $ (C) Copyright Venue, All Rights Reserved */
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/**************************************************************/
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/*
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File Name : return.h
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Desc. : Macros for return,contextsw
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Written by : Takeshi Shimizu
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11-May-88
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*/
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/**************************************************************/
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/************************************************************************/
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/* */
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/* (C) Copyright 1989-98 Venue. All Rights Reserved. */
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/* Manufactured in the United States of America. */
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/* */
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/* The contents of this file are proprietary information */
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/* belonging to Venue, and are provided to you under license. */
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/* They may not be further distributed or disclosed to third */
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/* parties without the specific permission of Venue. */
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/* */
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/************************************************************************/
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#ifdef BIGVM
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#define FX_FNHEADER CURRENTFX->fnheader
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#else
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#define FX_FNHEADER (CURRENTFX->hi2fnheader << 16) | CURRENTFX->lofnheader
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#endif /* BIGVM */
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/* FAST case return use */
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#ifndef ISC
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#define FastRetCALL \
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{ \
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/* Get IVar from Retunee's IVAR offset slot(BF) */ \
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IVar = Addr68k_from_LADDR(STK_OFFSET | GETWORD((DLword *)CURRENTFX -1)); \
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/* Get FuncObj from Retunee's FNHEAD slot in FX */ \
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FuncObj = (struct fnhead *) \
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Addr68k_from_LADDR(FX_FNHEADER); \
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/* Get PC from Retunee's pc slot in FX */ \
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PC = (ByteCode *)FuncObj + CURRENTFX->pc ; \
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}
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#else
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#define FastRetCALL \
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{ \
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/* Get IVar from Retunee's IVAR offset slot(BF) */ \
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IVar = Addr68k_from_LADDR(STK_OFFSET | GETWORD((DLword *)CURRENTFX -1)); \
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/* Get FuncObj from Retunee's FNHEAD slot in FX */ \
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FuncObj = (struct fnhead *) \
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Addr68k_from_LADDR(FX_FNHEADER); \
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/* Get PC from Retunee's pc slot in FX */ \
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PC = (ByteCode *)FuncObj + CURRENTFX->pc ; \
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if (!(FuncObj->byteswapped)) \
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{ \
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byte_swap_code_block(FuncObj); \
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FuncObj->byteswapped = 1; \
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} \
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}
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#endif /* ISC */
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/** in CONTEXTSW , for exchanging context **/
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#define Midpunt(fxnum) \
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{ register DLword midpunt; \
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midpunt = LOLOC(LADDR_from_68k(CURRENTFX)); \
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PVar=(DLword *) \
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Addr68k_from_StkOffset( \
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(GETWORD(((DLword *)InterfacePage) +fxnum))) \
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+ FRAMESIZE; \
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GETWORD(((DLword *)InterfacePage) +fxnum) = midpunt ; \
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}
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#define CHECKFX \
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if (((UNSIGNED)PVar -(UNSIGNED)CURRENTFX) != 20) \
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{ printf("Invalid FX(0x%x) and PV(0x%x) \n", \
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LADDR_from_68k(CURRENTFX),LADDR_from_68k(PVar)); \
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}
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/**** Calls when invoke the function is assumed
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that it is called by CONTEXTSW in orginal LISP code **/
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#define BEFORE_CONTEXTSW \
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{ CurrentStackPTR += 2; \
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CURRENTFX->nextblock=StkOffset_from_68K(CurrentStackPTR); \
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GETWORD(CurrentStackPTR)=STK_FSB_WORD; \
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GETWORD(CurrentStackPTR+1)= (((UNSIGNED)EndSTKP-(UNSIGNED)(CurrentStackPTR))>>1); \
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if (GETWORD(CurrentStackPTR+1) == 0) error("0-long free block."); \
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}
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#define AFTER_CONTEXTSW \
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{ register DLword *ptr68k,*freeptr; \
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ptr68k = (DLword*)Addr68k_from_StkOffset(CURRENTFX->nextblock); \
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if(GETWORD(ptr68k) != STK_FSB_WORD) error("pre_moveframe: MP9316"); \
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CHECK_FX(CURRENTFX); \
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freeptr=ptr68k; \
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while(GETWORD(freeptr) == STK_FSB_WORD) \
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EndSTKP=freeptr=freeptr+ GETWORD(freeptr+1); \
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S_CHECK(CURRENTFX->incall== NIL, "CONTEXTSW during fn call"); \
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/*S_CHECK(CURRENTFX->nopush== NIL, "CONTEXTSW, NOPUSH is set"); ** JDS 4/9/96 this seems not to matter, so I removed it. */\
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CurrentStackPTR = ptr68k- 2 ; \
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CHECK_FX(CURRENTFX); \
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S_CHECK( EndSTKP > CurrentStackPTR, \
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"End of stack isn't beyond current stk pointer."); \
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}
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