Difference between revisions of "Registers"

From Mill Computing Wiki
Jump to: navigation, search
 
(One intermediate revision by the same user not shown)
Line 35:Line 35:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| global address of code address region
 
|| global address of code address region
 
|-
 
|-
Line 46:Line 46:
 
|-
 
|-
 
| codePointer || cp
 
| codePointer || cp
−
|style="text-align:center"| ✔
+
|style="text-align:center"| ✘
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| local address of code address region
 
|| local address of code address region
 
|-
 
|-
Line 63:Line 63:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| upper bound of code address region
 
|| upper bound of code address region
 
|-
 
|-
Line 77:Line 77:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| global address of data address region
 
|| global address of data address region
 
|-
 
|-
Line 84:Line 84:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| local address of data address region
 
|| local address of data address region
 
|-
 
|-
Line 91:Line 91:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| upper bound of data address region
 
|| upper bound of data address region
 
|-
 
|-
 
| ebbEntry ||  
 
| ebbEntry ||  
−
|style="text-align:center"| ✘
 
−
|style="text-align:center"| ✘
 
−
|style="text-align:center"| ✘
 
−
|style="padding:0 1em"| call, task switch
 
−
|| address of head byte of current ebb
 
−
|-
 
−
| exuLag ||
 
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="padding:0 1em"| call, task switch
 
|style="padding:0 1em"| call, task switch
−
|| cycles until next exu instruction issue
+
|| offset from cpReg of head byte of current ebb
 
|-
 
|-
 
| faultBase ||  
 
| faultBase ||  
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="text-align:center"| ✘
+
|style="text-align:center"| ✔
−
|style="text-align:center"| ✘
+
|style="text-align:center"| ✔
 
|style="padding:0 1em"| call, task switch
 
|style="padding:0 1em"| call, task switch
 
|| fault vector base address
 
|| fault vector base address
 
|-
 
|-
−
| fpState ||  
+
| floatControl ||  
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
−
|style="text-align:center"| ✘
+
|style="text-align:center"| ✔
 
|style="padding:0 1em"| call, task switch
 
|style="padding:0 1em"| call, task switch
−
|| floating point state
+
|| floating point mode control
 
|-
 
|-
−
| flowLag ||  
+
| floatStatus ||  
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
−
|style="text-align:center"| ✘
+
|style="text-align:center"| ✔
 
|style="padding:0 1em"| call, task switch
 
|style="padding:0 1em"| call, task switch
−
|| cycles until next flow instruction issue
+
|| floating point status
 
|-
 
|-
 
| framePointer || fp
 
| framePointer || fp
Line 136:Line 129:
 
|| address of current stack frame
 
|| address of current stack frame
 
|-
 
|-
−
| flowCorePC || fpc
+
| functionEntry || func
 +
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="text-align:center"| ✔
 
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="padding:0 1em"| call, task switch
 
|style="padding:0 1em"| call, task switch
−
|| flowCore instruction counter
+
|| offset from cpReg of function entry address
 
|-
 
|-
−
| functionEntry || func
+
| globalObjectTable || gotp
 +
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="text-align:center"| ✘
+
|style="padding:0 1em"| task switch
−
|style="padding:0 1em"| call, task switch
+
|| address of GOT (Global Object Table)
−
|| function entry address
+
 
|-
 
|-
 
| inboundArguments || inp
 
| inboundArguments || inp
Line 184:Line 177:
 
|style="padding:0 1em"|  
 
|style="padding:0 1em"|  
 
|| global address of upper bound of the MMIO aperture
 
|| global address of upper bound of the MMIO aperture
 +
|-
 +
| outboundArguments || outp
 +
|style="text-align:center"| ✔
 +
|style="text-align:center"| ✔
 +
|style="text-align:center"| ✘
 +
|style="padding:0 1em"| call, task switch
 +
|| outbound memory arguments address
 
|-
 
|-
 
| processID ||  
 
| processID ||  
Line 273:Line 273:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| address of per-thread data
 
|| address of per-thread data
 
|-
 
|-
Line 280:Line 280:
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✔
 
|style="text-align:center"| ✘
 
|style="text-align:center"| ✘
−
|style="padding:0 1em"| call, task switch
+
|style="padding:0 1em"| task switch
 
|| address of receiver of method call
 
|| address of receiver of method call
 
|-
 
|-
Line 289:Line 289:
 
|style="padding:0 1em"| task switch
 
|style="padding:0 1em"| task switch
 
|| trap vector base address
 
|| trap vector base address
−
|-
 
−
| exuCorePC || xpc
 
−
|style="text-align:center"| ✘
 
−
|style="text-align:center"| ✔
 
−
|style="text-align:center"| ✘
 
−
|style="padding:0 1em"| call, task switch
 
−
|| exuCore instruction counter
 
 
|}
 
|}

Latest revision as of 13:24, 23 February 2021

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 ✘ ✔ ✘ task switch global address of code address region
coreNum ✘ ✔ ✘ ordinal number of this core on the chip
codePointer cp ✘ ✔ ✘ task switch local address of code address region
constantPool cpp ✔ ✔ ✘ call, task switch address of constant pool
codeUpperBound ✘ ✔ ✘ task switch upper bound of code address region
cycleCounter ✘ ✔ ✘ task switch instruction cycle counter
dataLowerBound ✘ ✔ ✘ task switch global address of data address region
dataPointer dp ✔ ✔ ✘ task switch local address of data address region
dataUpperBound ✘ ✔ ✘ task switch upper bound of data address region
ebbEntry ✘ ✔ ✘ call, task switch offset from cpReg of head byte of current ebb
faultBase ✘ ✔ ✔ call, task switch fault vector base address
floatControl ✘ ✔ ✔ call, task switch floating point mode control
floatStatus ✘ ✔ ✔ call, task switch floating point status
framePointer fp ✔ ✔ ✘ call, task switch address of current stack frame
functionEntry func ✘ ✘ ✘ call, task switch offset from cpReg of function entry address
globalObjectTable gotp ✔ ✘ ✘ task switch address of GOT (Global Object Table)
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
outboundArguments outp ✔ ✔ ✘ call, task switch outbound memory arguments address
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 ✔ ✔ ✘ task switch address of per-thread data
thisPointer tp ✔ ✔ ✘ task switch address of receiver of method call
trapBase ✘ ✘ ✘ task switch trap vector base address
Retrieved from "http://millcomputing.com/w/index.php?title=Registers&oldid=4257"