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650 lines
27 KiB
650 lines
27 KiB
/*static char *SCCSID = "%W% %E%";*/
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/*
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* Copyright Microsoft Corporation 1986,1987
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*
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* This Module contains Proprietary Information of Microsoft
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* Corporation and should be treated as Confidential.
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*/
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/*
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* NEWMAP3.C
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*
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* Routines to set up load image map for DOS3 exes.
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*/
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#include <minlit.h> /* Types and constants */
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#include <bndtrn.h> /* Types and constants */
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#include <bndrel.h> /* Types and constants */
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#include <lnkmsg.h> /* Error messages */
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#include <extern.h> /* External declarations */
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#include <string.h>
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LOCAL SEGTYPE seg; /* Current seg number */
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/*
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* FUNCTION PROTOTYPES
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*/
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LOCAL void NEAR SetSizes(unsigned short segPrev);
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LOCAL void NEAR PackCodeSegs(unsigned short segTop);
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#if OVERLAYS
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/*
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* SetupOverlays:
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*
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* Set up the overlay area.
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* Called by AssignAddresses.
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*/
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void NEAR SetupOverlays ()
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{
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APROPSNPTR apropSn;
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WORD cbOvlData; /* Amount of overlay data */
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if(osnMac > OSNMAX) osnMac = OSNMAX;
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apropSn = GenSeg("\014OVERLAY_DATA","\004DATA",ggrDGroup, (FTYPE) TRUE);
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/* Create (maybe) data segment */
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apropSn->as_flags = dfData; /* Type data */
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gsnOvlData = apropSn->as_gsn; /* Save SEGDEF number */
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cbOvlData = (((WORD) apropSn->as_cbMx) + 0xF) & 0xFFF0;
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/* Round size up to paragraph bound */
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/* We will have one word table indexed by overlay segment number, one
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* char table indexed by overlay seg. no., one long table indexed by
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* overlay number, 15 bytes for the file name, a word for the number of
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* overlays, a word for the number of overlay segs., and a byte for the
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* interrupt number.
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*/
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apropSn->as_cbMx = 20 + ((long) osnMac << 1) +
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(long) (fDynamic ? osnMac << 1 : osnMac) +
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((long) iovMac << 2) + (long) cbOvlData;
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// For dynamic overlays add one table of longs indexed by overlay
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// number and one byte for overlay interrup number.
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if (fDynamic)
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apropSn->as_cbMx += ((long) iovMac << 2) + 1;
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MARKVP(); /* Page has been modified */
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MkPubSym("\006$$CGSN",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Count of segments */
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cbOvlData += 2; /* Increment size */
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MkPubSym("\006$$COVL",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Count of overlays */
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cbOvlData += 2; /* Increment size */
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MkPubSym("\013$$MPGSNBASE",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Gsn to base table */
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cbOvlData += osnMac << 1; /* Accumulate size of data so far */
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MkPubSym("\012$$MPGSNOVL",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Gsn to overlay table */
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if (fDynamic)
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cbOvlData += osnMac << 1; /* Accumulate size of data so far */
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else
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cbOvlData += osnMac;
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MkPubSym("\012$$MPOVLLFA",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Overlay to file address table */
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cbOvlData += iovMac << 2; /* Accumulate size of data so far */
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if (fDynamic)
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{
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MkPubSym("\013$$MPOVLSIZE",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Overlay to size table */
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cbOvlData += iovMac << 2; /* Accumulate size of data so far */
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MkPubSym("\007$$INTNO",ggrDGroup,gsnOvlData, (RATYPE)cbOvlData);
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/* Overlay interrupt number */
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cbOvlData++;
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MkPubSym("\010$$OVLEND", ggrDGroup, gsnOvlData, (RATYPE) cbOvlData);
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/* Last byte in overlay area */
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apropSn = GenSeg("\016OVERLAY_THUNKS","\004CODE",GRNIL, TRUE);
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/* Create thunk segment */
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apropSn->as_flags = dfCode; /* Code segment */
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apropSn->as_cbMx = ovlThunkMax * OVLTHUNKSIZE;
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apropSn->as_tysn = apropSn->as_tysn & ~MASKTYSNCOMBINE;
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apropSn->as_tysn = apropSn->as_tysn | TYSNCOMMON;
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gsnOverlay = apropSn->as_gsn; /* Save thunks SEGDEF number */
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MARKVP(); /* Page has changed */
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MkPubSym("\015$$OVLTHUNKBEG", GRNIL, gsnOverlay,0);
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MkPubSym("\015$$OVLTHUNKEND", GRNIL, gsnOverlay,ovlThunkMax*OVLTHUNKSIZE);
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}
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else
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{
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MkPubSym("\010$$EXENAM",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Executable file name */
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cbOvlData += 15; /* 15-byte name field */
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MkPubSym("\007$$INTNO",ggrDGroup,gsnOvlData,(RATYPE)cbOvlData);
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/* Overlay interrupt number */
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apropSn = GenSeg("\014OVERLAY_AREA","\004CODE",GRNIL,FALSE);
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/* Create overlay area */
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apropSn->as_flags = dfCode; /* Code segment */
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gsnOverlay = apropSn->as_gsn; /* Save overlay SEGDEF number */
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MARKVP(); /* Page has changed */
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MkPubSym("\011$$OVLBASE",GRNIL,gsnOverlay,(RATYPE)0);
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/* First byte in overlay area */
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apropSn = GenSeg("\013OVERLAY_END","\004CODE",GRNIL,FALSE);
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/* Create overlay end */
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apropSn->as_flags = dfCode; /* Code segment */
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MkPubSym("\010$$OVLEND",GRNIL,apropSn->as_gsn,(RATYPE)0);
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/* Last byte in overlay area */
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MARKVP(); /* Page has changed */
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}
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}
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#endif /* OVERLAYS */
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/****************************************************************
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* *
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* SetSizes: *
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* *
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* This function sets the starting address for the segth *
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* segment assuming the segment indexed by segPrev immediately *
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* precedes the segth segment. If there is a starting address *
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* for the segth segment already, then SetSizes will not *
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* change that address unless the new address it calculates *
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* is higher. *
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* *
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****************************************************************/
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LOCAL void NEAR SetSizes (segPrev)
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SEGTYPE segPrev;
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{
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long addr; /* 20-bit address */
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/* Get address of end of previous segment */
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addr = ((long) mpsegsa[segPrev] << 4) +
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mpsegcb[segPrev] + mpsegraFirst[segPrev];
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/* Form 20-bit address of segment */
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switch(B2W(mpsegalign[seg])) /* Align the address properly */
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{
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case ALGNWRD: /* Word-aligned */
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addr = (addr + 1) & ~1L; /* Round up to word offset */
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break;
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#if OMF386
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case ALGNDBL: /* Double word-aligned */
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addr = (addr + 3) & ~3L; /* Round up to dword offset */
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break;
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#endif
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case ALGNPAR: /* Paragraph-aligned */
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addr = (addr + 0xF) & ~0xFL;
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/* Round up to paragraph offset */
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break;
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case ALGNPAG: /* Page-aligned */
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addr = (addr + 0xFF) & ~0xFFL;
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/* Round up to page offset */
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default: /* Byte-aligned */
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break;
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}
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/* Assign beginning of this segment */
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if(addr > ((long) mpsegsa[seg] << 4) + (long) mpsegraFirst[seg])
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{
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mpsegsa[seg] = (WORD)(addr >> 4);
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mpsegraFirst[seg] = (WORD) addr & 0xF;
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}
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}
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/*
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* PackCodeSegs : Pack adjacent code segments
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*
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* Pack as many adjacent code segments (which are in the same
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* overlay) together as possible. Start with the current
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* segment, seg, and stop when the packing limit is exceeded,
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* a data segment is reached, or the given highest segment is
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* reached. For DOS3, packing means assigning the same base
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* address and adjusting the offset of the first byte.
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*
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* Parameters:
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* segTop Number of highest segment which can be packed.
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* Returns:
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* Nothing.
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* Side effects:
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* seg is set to the last segment included in the packing group
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*/
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LOCAL void NEAR PackCodeSegs (segTop)
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SEGTYPE segTop;
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{
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DWORD sacb; /* Length of packing group */
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SEGTYPE segi; /* Our private current segment no. */
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RATYPE raSave; /* Original mpsegraFirst[segi] */
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#if OVERLAYS
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IOVTYPE iov; /* Overlay of 1st seg in group */
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iov = mpsegiov[seg]; /* Determine current overlay */
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#endif
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sacb = mpsegcb[seg] + mpsegraFirst[seg]; /* Initialize group size */
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for(segi = seg + 1; segi <= segTop; ++segi)
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{ /* Loop until highest code seg */
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#if OVERLAYS
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if(mpsegiov[segi] != iov) /* If not a member of this ovl, skip */
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continue;
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#endif
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if(!(mpsegFlags[segi] & FCODE)) /* Stop if we hit a data segment */
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break;
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/* Adjust alignment */
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switch(mpsegalign[segi]) /* Switch on alignment type */
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{
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case ALGNWRD: /* Word-aligned */
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sacb = (sacb + 1) & ~1L;
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/* Round up size to word boundary */
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break;
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#if OMF386
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case ALGNDBL: /* Double word-aligned */
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sacb = (sacb + 3) & ~3L; /* Round up to dword offset */
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break;
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#endif
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case ALGNPAR: /* Paragraph-aligned */
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sacb = (sacb + 0xF) & ~0xFL;
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/* Round up size to para boundary */
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break;
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case ALGNPAG: /* Page-aligned */
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sacb = (sacb + 0xFF) & ~0xFFL;
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/* Round up size to page boundary */
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break;
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}
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raSave = mpsegraFirst[segi]; /* Save original value */
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mpsegraFirst[segi] = sacb; /* Set new offset */
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sacb += mpsegcb[segi]; /* Increment size of group */
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if(sacb > packLim) /* If packing limit exceeded, stop */
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{
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mpsegraFirst[segi] = raSave; /* Restore original value */
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break;
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}
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mpsegsa[segi] = mpsegsa[seg]; /* Assign base address */
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}
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}
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/*
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* AssignDos3Addr:
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*
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* Assign addresses for a DOS3-format program.
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* Called by AssignAddresses.
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*/
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void NEAR AssignDos3Addr(void)
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{
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APROPSNPTR apropSn; /* Pointer to a SEGDEF */
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SNTYPE gsn; /* Current global SEGDEF no. */
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ALIGNTYPE align; /* Alignment type */
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GRTYPE ggr; /* Current global GRPDEF no. */
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SEGTYPE segTop=0; /* Highest segment in DGROUP */
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SNTYPE gsnTop=0; /* Highest segment in DGROUP */
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SNTYPE gsnBottomDGroup;/* For DS-allocate */
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SEGTYPE segBottomDGroup;/* For DS-allocate */
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SATYPE saMaxDGroup; /* For DS-allocate */
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SEGTYPE segOverlay;
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SEGTYPE segPrev;
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#if OVERLAYS
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SEGTYPE FAR *mpiovsegPrev;
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IOVTYPE iov;
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ALIGNTYPE alignOverlay;
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long cbOverlay;
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WORD segOvlSa;
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RATYPE segOvlRaFirst;
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#endif
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SEGTYPE segStack; /* Logical segment no. of stack */
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#if OVERLAYS
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mpiovsegPrev = (SEGTYPE FAR *) GetMem(iovMac*sizeof(SEGTYPE));
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#endif
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segTop = 0;
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/* We haven't yet assigned absolute segments (it is assumed
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* they are empty and are used only for addressing purposes),
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* but now we must assign them somewhere.
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*/
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csegsAbs = 0; /* Assume there are no absolute segs */
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for(gsn = 1; gsn < gsnMac; ++gsn) /* Loop to initialize absolute segs */
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{
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if(mpgsnseg[gsn] == SEGNIL) /* If we have an absolute segment */
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{
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++csegsAbs; /* Increment counter */
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mpgsnseg[gsn] = ++segLast; /* Assign a segment order number */
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}
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}
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if(vfDSAlloc) /* If doing DS allocation */
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{
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if(gsnMac >= gsnMax)
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Fatal(ER_segmax);
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/* We implicitly use another segment */
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gsnBottomDGroup = gsnMac; /* Fix the bottom of DGROUP */
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++csegsAbs; /* Inc absolute seg counter */
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segBottomDGroup = ++segLast; /* Bottom segment in DGROUP */
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mpgsnseg[gsnBottomDGroup] = segLast;
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/* Store entry in table */
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}
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#if OVERLAYS
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alignOverlay = ALGNPAR; /* Overlays are para-aligned */
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#endif
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segLast -= csegsAbs; /* Get no. of last non-abs seg */
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/* Find lowest segment in groups, etc. */
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for(gsn = 1; gsn < gsnMac; ++gsn) /* Loop to find lowest segs */
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{
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seg = mpgsnseg[gsn]; /* Get segment number */
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apropSn = (APROPSNPTR ) FetchSym(mpgsnrprop[gsn],TRUE);
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/* Get symbol table entry */
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mpgsndra[gsn] = 0;
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#if OVERLAYS
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mpsegiov[seg] = apropSn->as_iov;
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/* Save overlay number */
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#endif
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mpsegcb[seg] = apropSn->as_cbMx;
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/* Save segment size */
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if(apropSn->as_tysn == TYSNABS) /* Assign absolute segs their loc. */
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mpsegsa[seg] = (SATYPE) apropSn->as_cbMx;
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ggr = apropSn->as_ggr; /* Get GRPDEF number */
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if(ggr != GRNIL) /* If segment is group member */
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{
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if(mpggrgsn[ggr] == SNNIL || mpgsnseg[mpggrgsn[ggr]] > seg)
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mpggrgsn[ggr] = gsn;
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if(ggr == ggrDGroup && seg > segTop)
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{
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segTop = seg;
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gsnTop = gsn;
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}
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}
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align = (ALIGNTYPE) ((apropSn->as_tysn) >> 5);
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if((apropSn->as_tysn & MASKTYSNCOMBINE) == TYSNSTACK) align = ALGNPAR;
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if(align > mpsegalign[seg]) mpsegalign[seg] = align;
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#if OVERLAYS
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if(mpsegiov[seg] != IOVROOT &&
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mpiovsegPrev[mpsegiov[seg]] == SEGNIL && align > alignOverlay)
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{
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mpiovsegPrev[mpsegiov[seg]] = SEGNIL + 1;
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alignOverlay = align;
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}
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#endif
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/* Define special symbols "_edata" and "_end" */
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if (fSegOrder)
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Define_edata_end(apropSn);
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}
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if (fSegOrder)
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Check_edata_end(gsnTop, segTop);
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/* Now we assign actual addresses. The procedure is as follows:
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* For each code segment
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* (1) Assign all addresses of the root up to OVERLAY_AREA or THUNK_AREA.
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* (2) Assign all addresses of the overlays.
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* (3) If dynamic overlays then set the size of OVERLAY_AREA to zero
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* else set the start of the segment after OVERLAY_AREA to be
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* the greatest of all the overlays including the root
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* OVERLAY_AREA.
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* (4) Assign the rest of the root segments.
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* Repeat steps one through four for all remaining segments.
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*
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* Set limit of part (1): up to OVERLAY_AREA(if there are overlays)
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* or the end of the segment list. Do not assign OVERLAY_AREA until
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* after all the overlays have been taken care of.
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*
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* For dynamic overlays the DGROUP part of the root overlay
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* immediatelly follows the OVERLAY_THUNKS, since the OVERLAY_AREA
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* is dynamically allocated by the overlay manager at run-time.
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*/
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#if OVERLAYS
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if(fOverlays) /* If there are overlays */
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{
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segOverlay = mpgsnseg[gsnOverlay];
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/* Set limit at 1st overlay */
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mpsegalign[segOverlay] = alignOverlay;
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}
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else
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#endif
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segOverlay = segLast; /* Look at all segments */
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/* Set the sizes of all of the root up until the OVERLAY_AREA. */
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segPrev = 0; /* No previous segment */
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for(seg = 1; seg <= segOverlay; ++seg)
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{ /* Loop thru segs up to overlay area */
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#if OVERLAYS
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if(mpsegiov[seg] == IOVROOT)
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{ /* If root member */
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#endif
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SetSizes(segPrev); /* Set start address */
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/* If packing code segs and this is one, pack until segOverlay */
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if (!fDynamic && packLim != 0L && (mpsegFlags[seg] & FCODE))
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PackCodeSegs(segOverlay);
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segPrev = seg; /* Save segment number */
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#if OVERLAYS
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}
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#endif
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}
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#if OVERLAYS
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/* If there are no overlays, then we have assigned all
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* segments. Otherwise, the previous segment of the
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* beginning of the overlays is the OVERLAY_AREA in the
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* root. If the dynamic overlays were requested, then
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* the OVERLAY_THUNKS becomes the previous segment for
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* all overlay segments.
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*/
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if (fOverlays) /* If there are overlays */
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{
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for (iov = IOVROOT + 1; iov < (IOVTYPE) iovMac; ++iov)
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mpiovsegPrev[iov] = segOverlay;
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/* Assign addresses to the overlays. We do not assign the
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* rest of the root because we may have to expand the size of
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* OVERLAY_AREA to accommodate a large overlay.
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*/
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if (fDynamic)
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{
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// All dymanic overlay are zero based
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segOvlSa = mpsegsa[segOverlay];
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mpsegsa[segOverlay] = 0;
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segOvlRaFirst = mpsegraFirst[segOverlay];
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mpsegraFirst[segOverlay] = 0;
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}
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cbOverlay = mpsegcb[segOverlay];/* Save size of overlay segment */
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mpsegcb[segOverlay] = 0; /* Zero the size field for SetSizes */
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for (seg = 1; seg <= segLast; ++seg)
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{
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if(mpsegiov[seg] != IOVROOT)
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{
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SetSizes(mpiovsegPrev[mpsegiov[seg]]);
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/* If packing code segs and this is one, pack until segLast */
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if(packLim != 0L && (mpsegFlags[seg] & FCODE))
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PackCodeSegs(segLast);
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mpiovsegPrev[mpsegiov[seg]] = seg;
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}
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}
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if (fDynamic)
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{
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mpsegsa[segOverlay] = segOvlSa;
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mpsegraFirst[segOverlay] = segOvlRaFirst;
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}
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mpsegcb[segOverlay] = cbOverlay;/* Reset the size field */
|
|
|
|
/* Determine first segment in root after OVERLAY_AREA or OVERLAY_THUNKS */
|
|
|
|
seg = segOverlay + 1;
|
|
while (seg <= segLast && mpsegiov[seg] != IOVROOT)
|
|
++seg;
|
|
/*
|
|
* If there is a segment in the root after the overlays,
|
|
* then go through all of the overlays as previous segments
|
|
* and set its size with the previous one being the last seg
|
|
* of each overlay. We won't initialize the Vm for that
|
|
* segment because we won't know the maximum placement until
|
|
* afterward.
|
|
*/
|
|
if (seg <= segLast)
|
|
{
|
|
for (iov = IOVROOT + 1; iov < (IOVTYPE) iovMac; ++iov)
|
|
SetSizes(mpiovsegPrev[iov]);
|
|
|
|
/* Assign the rest of the root */
|
|
|
|
segPrev = segOverlay;
|
|
while (seg <= segLast)
|
|
{
|
|
if (mpsegiov[seg] == IOVROOT)
|
|
{
|
|
SetSizes(segPrev);
|
|
|
|
/* If packing code segs and this is one, pack until segLast */
|
|
|
|
if(packLim != 0L && (mpsegFlags[seg] & FCODE))
|
|
PackCodeSegs(segLast);
|
|
segPrev = seg;
|
|
}
|
|
++seg;
|
|
}
|
|
}
|
|
}
|
|
#endif /* OVERLAYS */
|
|
if(vfDSAlloc) /* If doing DS allocation */
|
|
{
|
|
saMaxDGroup = (SATYPE) (mpsegsa[segTop] +
|
|
((mpsegcb[segTop] + mpsegraFirst[segTop] + 0xF) >> 4));
|
|
mpggrgsn[ggrDGroup] = gsnBottomDGroup;
|
|
mpsegsa[segBottomDGroup] = (SATYPE)((saMaxDGroup - 0x1000) & ~(~0 << WORDLN));
|
|
#if OVERLAYS
|
|
mpsegiov[segBottomDGroup] = mpsegiov[segTop];
|
|
/* Top and bottom in same overlay */
|
|
#endif
|
|
mpgsndra[gsnBottomDGroup] = 0;
|
|
}
|
|
/* If /DOSSEG enabled, stack segment defined, and DGROUP defined,
|
|
* check for combined stack + DGROUP <= 64K.
|
|
*/
|
|
if(fSegOrder && gsnStack != SNNIL && mpggrgsn[ggrDGroup] != SNNIL)
|
|
{
|
|
segStack = mpgsnseg[gsnStack];
|
|
if ((((long) mpsegsa[segStack] << 4) + mpsegcb[segStack])
|
|
- ((long) mpsegsa[mpgsnseg[mpggrgsn[ggrDGroup]]] << 4)
|
|
> LXIVK)
|
|
Fatal(ER_stktoobig);
|
|
}
|
|
segResLast = segLast;
|
|
for(gsn = 1; gsn < gsnMac; ++gsn)
|
|
mpgsndra[gsn] += mpsegraFirst[mpgsnseg[gsn]];
|
|
#if OVERLAYS
|
|
/* Set all absolute segs to the root overlay */
|
|
seg = segLast + 1;
|
|
while(seg < (SEGTYPE) (segLast + csegsAbs)) mpsegiov[seg++] = IOVROOT;
|
|
/* "Remember those absolute symbols, too !" */
|
|
mpsegiov[0] = IOVROOT;
|
|
FFREE(mpiovsegPrev);
|
|
#endif
|
|
}
|
|
|
|
#if OVERLAYS
|
|
#pragma check_stack(on)
|
|
/****************************************************************
|
|
* *
|
|
* FixOvlData: *
|
|
* *
|
|
* Initialize overlay data tables. *
|
|
* *
|
|
****************************************************************/
|
|
|
|
void NEAR FixOvlData()
|
|
{
|
|
APROPNAMEPTR apropName; /* Public symbol name */
|
|
AHTEPTR ahte; /* Pointer to hash table entry */
|
|
BYTE wrd[2]; /* Word as byte array */
|
|
long ra; /* Offset */
|
|
SNTYPE osn; /* Overlay segment index */
|
|
SEGTYPE seg; /* Segment number */
|
|
SATYPE sa; /* Segment base */
|
|
BYTE *pb; /* Byte pointer */
|
|
SBTYPE sb; /* String buffer */
|
|
SNTYPE gsn;
|
|
|
|
apropName = (APROPNAMEPTR ) PropSymLookup("\006$$CGSN",ATTRPNM,FALSE);
|
|
/* Look up public symbol */
|
|
mpsegFlags[mpgsnseg[apropName->an_gsn]] |= FNOTEMPTY;
|
|
/* Segment is not empty */
|
|
wrd[0] = (BYTE) (osnMac & 0xff); /* Get lo byte */
|
|
wrd[1] = (BYTE) ((osnMac >> BYTELN) & 0xff); /* Get hi byte */
|
|
MoveToVm(2,wrd,mpgsnseg[apropName->an_gsn],apropName->an_ra);
|
|
/* Store value */
|
|
wrd[0] = (BYTE) (iovMac & 0xff); /* Get lo byte */
|
|
wrd[1] = (BYTE) ((iovMac >> BYTELN) & 0xff); /* Get hi byte */
|
|
apropName = (APROPNAMEPTR ) PropSymLookup("\006$$COVL",ATTRPNM,FALSE);
|
|
/* Look up public symbol */
|
|
MoveToVm(2,wrd,mpgsnseg[apropName->an_gsn],apropName->an_ra);
|
|
/* Store value */
|
|
apropName = (APROPNAMEPTR )PropSymLookup("\013$$MPGSNBASE",ATTRPNM,FALSE);
|
|
/* Look up public symbol */
|
|
ra = apropName->an_ra; /* Get table offset */
|
|
seg = mpgsnseg[apropName->an_gsn]; /* Get segment number */
|
|
vrectData = LEDATA;
|
|
RecordSegmentReference(seg,ra,seg); /* Record load-time fixup */
|
|
ra += 2; /* Increment offset */
|
|
/* Entries 1 thru osnMac - 1 contain bases of segments at runtime */
|
|
for(osn = 1; osn < osnMac; ++osn) /* Loop thru segment definitions */
|
|
{
|
|
sa = mpsegsa[mpgsnseg[mposngsn[osn]]];
|
|
/* Get segment base */
|
|
if (fDynamic)
|
|
sa <<= 4; /* Convert para address to offset from overlay base */
|
|
wrd[0] = (BYTE) (sa & 0xff); /* Lo byte */
|
|
wrd[1] = (BYTE) ((sa >> BYTELN) & 0xff); /* Hi byte */
|
|
MoveToVm(2,wrd,seg,ra); /* Move to VM */
|
|
if (!fDynamic)
|
|
RecordSegmentReference(seg,ra,seg);
|
|
/* Record load-time fixup */
|
|
ra += 2; /* Increment offset */
|
|
}
|
|
apropName = (APROPNAMEPTR ) PropSymLookup("\012$$MPGSNOVL",ATTRPNM,FALSE);
|
|
/* Look up public symbol */
|
|
ra = apropName->an_ra; /* Get table offset */
|
|
seg = mpgsnseg[apropName->an_gsn]; /* Get segment number */
|
|
if (fDynamic)
|
|
{
|
|
ra += 2; /* First entry null */
|
|
for(osn = 1; osn < osnMac; ++osn)
|
|
{ /* Loop thru segment definitions */
|
|
wrd[0] = (BYTE) mpsegiov[mpgsnseg[mposngsn[osn]]];
|
|
wrd[1] = (BYTE) ((mpsegiov[mpgsnseg[mposngsn[osn]]] >> BYTELN) & 0xff);
|
|
/* Get overlay number */
|
|
MoveToVm(2,wrd,seg,ra); /* Move to VM */
|
|
ra += 2;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
++ra; /* First entry null */
|
|
for(osn = 1; osn < osnMac; ++osn)/* Loop thru segment definitions */
|
|
{
|
|
wrd[0] = (BYTE) mpsegiov[mpgsnseg[mposngsn[osn]]];
|
|
/* Get overlay number */
|
|
MoveToVm(1,wrd,seg,ra++); /* Move to VM */
|
|
}
|
|
|
|
apropName = (APROPNAMEPTR ) PropSymLookup("\010$$EXENAM",ATTRPNM,FALSE);
|
|
/* Look up public symbol */
|
|
ra = apropName->an_ra; /* Get table offset */
|
|
seg = mpgsnseg[apropName->an_gsn];
|
|
/* Get segment number */
|
|
ahte = (AHTEPTR ) FetchSym(rhteRunfile,FALSE);
|
|
memcpy(sb,GetFarSb(ahte->cch),1+B2W(ahte->cch[0]));
|
|
/* Copy the filename */
|
|
pb = StripDrivePath(sb); /* Strip drive and path */
|
|
sb[sb[0] + 1] = '\0';
|
|
if (strrchr(&sb[1], '.') == NULL)
|
|
UpdateFileParts(pb, sbDotExe);
|
|
MoveToVm(B2W(pb[0]),pb+1,seg,ra);
|
|
/* Move name to VM */
|
|
}
|
|
apropName = (APROPNAMEPTR ) PropSymLookup("\007$$INTNO",ATTRPNM,FALSE);
|
|
/* Look up public symbol */
|
|
MoveToVm(1,&vintno,mpgsnseg[apropName->an_gsn],apropName->an_ra);
|
|
/* Move overlay number to VM */
|
|
/* If /PACKCODE enabled, redefine $$OVLBASE so it has an offset of 0,
|
|
* which the overlay manager expects. Find 1st non-root segment
|
|
* and use that.
|
|
*/
|
|
if(packLim)
|
|
{
|
|
apropName = (APROPNAMEPTR) PropSymLookup("\011$$OVLBASE",ATTRPNM, TRUE);
|
|
for(gsn = 1; gsn < gsnMac && !mpsegiov[mpgsnseg[gsn]]; ++gsn);
|
|
apropName->an_gsn = gsn;
|
|
apropName->an_ra = 0;
|
|
}
|
|
}
|
|
#pragma check_stack(off)
|
|
#endif /* OVERLAYS */
|