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PDP10: Added mask on EXE repeat count (COVERITY)

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Bob Supnik 2017-03-09 19:50:01 -08:00 • committed by Mark Pizzolato
parent f26fa3d17f
commit 3530f0de7d
1 changed files with 4 additions and 3 deletions
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7
PDP10/pdp10_sys.c
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@ -23,6 +23,7 @@
used in advertising or otherwise to promote the sale, use or other dealings used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik. in this Software without prior written authorization from Robert M Supnik.
09-Mar-17 RMS Added mask on EXE repeat count (COVERITY)
20-Jan-17 RMS Fixed RIM loader to handle ITS and RIM10B formats 20-Jan-17 RMS Fixed RIM loader to handle ITS and RIM10B formats
04-Apr-11 RMS Removed DEUNA/DELUA support - never implemented 04-Apr-11 RMS Removed DEUNA/DELUA support - never implemented
01-Feb-07 RMS Added CD support 01-Feb-07 RMS Added CD support
@ -333,7 +334,7 @@ do {
switch (bty) { /* case type */ switch (bty) { /* case type */
case EXE_DIR: /* directory */ case EXE_DIR: /* directory */
if (ndir) /* got one */ if (ndir != 0) /* got one */
return SCPE_FMT; return SCPE_FMT;
ndir = fxread (dirbuf, sizeof (d10), bsz, fileref); ndir = fxread (dirbuf, sizeof (d10), bsz, fileref);
if (ndir < bsz) /* error */ if (ndir < bsz) /* error */
@ -367,7 +368,7 @@ do {
for (i = 0; i < ndir; i = i + 2) { /* loop thru dir */ for (i = 0; i < ndir; i = i + 2) { /* loop thru dir */
fpage = (int32) (dirbuf[i] & RMASK); /* file page */ fpage = (int32) (dirbuf[i] & RMASK); /* file page */
mpage = (int32) (dirbuf[i + 1] & RMASK); /* memory page */ mpage = (int32) (dirbuf[i + 1] & RMASK); /* memory page */
rpt = (int32) ((dirbuf[i + 1] >> 27) + 1); /* repeat count */ rpt = ((int32) ((dirbuf[i + 1] >> 27) + 1)) & 0777; /* repeat count */
for (j = 0; j < rpt; j++, mpage++) { /* loop thru rpts */ for (j = 0; j < rpt; j++, mpage++) { /* loop thru rpts */
if (fpage) { /* file pages? */ if (fpage) { /* file pages? */
fseek (fileref, (fpage << PAG_V_PN) * sizeof (d10), SEEK_SET); fseek (fileref, (fpage << PAG_V_PN) * sizeof (d10), SEEK_SET);
@ -385,7 +386,7 @@ for (i = 0; i < ndir; i = i + 2) { /* loop thru dir */
} /* end rpt */ } /* end rpt */
} /* end directory */ } /* end directory */
if (entvec && entbuf[1]) if (entvec && entbuf[1])
saved_PC = (int32) entbuf[1] & RMASK; /* start addr */ saved_PC = (int32) (entbuf[1] & RMASK); /* start addr */
return SCPE_OK; return SCPE_OK;
} }