Registers

Name	ID	Base	Reader	Writer	Spilled On	Description
argsSize		✘	✘	✘	call, task switch	size of memory argument block for next dynamic call
atomicStatus		✘	✘	✘		status if in an atomic extent
backCount		✘	✘	✘		pending stalls for atomic backoff
backoff		✘	✘	✘		backoff increment on atomic failure
codeLowerBound		✘	✔	✘	call, task switch	global address of code address region
coreNum		✘	✔	✘		ordinal number of this core on the chip
codePointer	cp	✔	✔	✘	call, task switch	local address of code address region
constantPool	cpp	✔	✔	✘	call, task switch	address of constant pool
codeUpperBound		✘	✔	✘	call, task switch	upper bound of code address region
cycleCounter		✘	✔	✘	task switch	instruction cycle counter
dataLowerBound		✘	✔	✘	call, task switch	global address of data address region
dataPointer	dp	✔	✔	✘	call, task switch	local address of data address region
dataUpperBound		✘	✔	✘	call, task switch	upper bound of data address region
ebbEntry		✘	✘	✘	call, task switch	address of head byte of current ebb
exuLag		✘	✔	✘	call, task switch	cycles until next exu instruction issue
faultBase		✘	✘	✘	call, task switch	fault vector base address
fpState		✘	✔	✘	call, task switch	floating point state
flowLag		✘	✔	✘	call, task switch	cycles until next flow instruction issue
framePointer	fp	✔	✔	✘	call, task switch	address of current stack frame
flowCorePC	fpc	✘	✔	✘	call, task switch	flowCore instruction counter
functionEntry	func	✘	✘	✘	call, task switch	function entry address
inboundArguments	inp	✔	✔	✘	call, task switch	inbound memory arguments address
issueCounter		✘	✔	✘	task switch	instruction issue counter
localSpace		✘	✘	✘		base of process local space within global space
noCacheLowerBound		✘	✘	✘		global address of MMIO aperture (bypasses caches)
noCacheUpperBound		✘	✘	✘		global address of upper bound of the MMIO aperture
processID		✘	✔	✘	task switch	current process number
realTimeClock	rtc	✘	✔	✘		real time clock
startStop		✘	✘	✘		true to start, false to stall
scratchBase		✘	✘	✘	call, task switch	base address of extended scratchpad
scratchSize		✘	✘	✘	call, task switch	size (extent) of extended scratchpad
segExtent		✘	✘	✘		size in bytes of top stack segment
ssegmentBase		✘	✘	✘		address of start of top stack segment in memory
spillerSp		✘	✘	✘		spiller stack pointer
stackPointer		✘	✘	✘	call, task switch	address of current top of stack and upper address of stack address region
stacklets		✘	✘	✘		address of start of stacklets region in memory
stepsInEbb		✘	✔	✘	call, task switch	issue cycles executed within current ebb
threadID		✘	✔	✘	task switch	current thread number
threadPointer	tlp	✔	✔	✘	call, task switch	address of per-thread data
thisPointer	tp	✔	✔	✘	call, task switch	address of receiver of method call
trapBase		✘	✘	✘	task switch	trap vector base address
exuCorePC	xpc	✘	✔	✘	call, task switch	exuCore instruction counter