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Clean up RED/YELLOW logging

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This commit is contained in:
Neil Webber 2024-05-24 07:38:43 -05:00
parent 62150f45de
commit ff2d6b6de4
1 changed files with 4 additions and 5 deletions
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9
machine.py
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@ -626,17 +626,16 @@ class PDP11:
# (as defined by hardware book)
lim = self.stack_limit_register or 0o400
if self.r[self.SP] < lim:
if not (self.straps & self.STRAPBITS.YELLOW):
self.logger.info(f"YELLOW ZONE, {list(map(oct, self.r))}")
# how about red?
if self.r[self.SP] + 32 < lim: # uh oh - below the yellow!
mstr = self.machinestate(fmt=oct)
if self.r[self.SP] + 32 < lim: # is it red?
# this is a red zone trap which is immediate
# the stack pointer is set to location 4
# and this trap is executed
self.r[self.SP] = 4 # !! just enough room for...
self.logger.warning(f"RED ZONE, {mstr}")
raise PDPTraps.AddressError(cpuerr=self.CPUERR_BITS.REDZONE)
else:
self.logger.info(f"YELLOW ZONE, {mstr}")
self.straps |= self.STRAPBITS.YELLOW
def get_synchronous_trap(self, abort_trap):