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SDS: trap_P not set if mem mgt trap during fetch (COVERITY)

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Bob Supnik 2017-03-09 19:47:19 -08:00 committed by Mark Pizzolato
parent 92e809f7c9
commit 97a11f2b05
1 changed files with 4 additions and 2 deletions
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6
SDS/sds_cpu.c
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@ -1,6 +1,6 @@
/* sds_cpu.c: SDS 940 CPU simulator
Copyright (c) 2001-2008, Robert M. Supnik
Copyright (c) 2001-2017, Robert M. Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
@ -26,6 +26,7 @@
cpu central processor
rtc real time clock
09-Mar-17 RMS trap_P not set if mem mgt trap during fetch (COVERITY)
28-Apr-07 RMS Removed clock initialization
29-Dec-06 RMS Fixed breakpoint variable declarations
16-Aug-05 RMS Fixed C++ declaration and cast problems
@ -456,7 +457,8 @@ while (reason == 0) { /* loop until halted */
break;
}
}
reason = Read (save_P = P, &inst); /* get instr */
trap_P = save_P = P; /* set backups for fetch */
reason = Read (P, &inst); /* get instr */
P = (P + 1) & VA_MASK; /* incr PC */
if (reason == SCPE_OK) { /* fetch ok? */
ion_defer = 0; /* clear ion */