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Merge pull request #46 from Russell-S-Harper/development

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Revising process information definitions.
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Russell-S-Harper 2019-03-30 09:33:31 -04:00 committed by GitHub
commit aca9f33c1e
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1 changed files with 7 additions and 7 deletions
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common/common.h
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@ -42,8 +42,8 @@
; BRO xxyy 0a yy xx PC <- PC + xxyy - branch if overflow (after arithmetic operations) ; BRO xxyy 0a yy xx PC <- PC + xxyy - branch if overflow (after arithmetic operations)
; BRU xxyy 0b yy xx PC <- PC + xxyy - branch if underflow (after arithmetic operations) ; BRU xxyy 0b yy xx PC <- PC + xxyy - branch if underflow (after arithmetic operations)
; CPR pq 0c pq Rp <- Rq - copy register ; CPR pq 0c pq Rp <- Rq - copy register
; LDI pq 0d pq Rp <- (int(Rq)) - load indirect from memory ; LDI pq 0d pq Rp <- (int(Rq)) - load indirect via allocated memory offset
; SVI pq 0e pq (int(Rp)) <- Rq - save indirect to memory ; SVI pq 0e pq (int(Rp)) <- Rq - save indirect via allocated memory offset
; CMR pq 0f pq F <- Rp <=> Rq - compare registers ; CMR pq 0f pq F <- Rp <=> Rq - compare registers
; 40 bytes in page zero for common registers ; 40 bytes in page zero for common registers
@ -97,10 +97,10 @@ _CR = _CRL ; code real memory address
_AR = _ARL ; allocated real memory address _AR = _ARL ; allocated real memory address
; register I8 maintains process information for context switching ; register I8 maintains process information for context switching
_PST = _I8 ; current process status _PSO = _I8 ; offset to running processes table
_PSI = _PST + 1 ; process stack index to save/restore
_PSO = _PSI + 1 ; offset to running processes table
_PSF = _PSO + 1 ; initial running process status PPPCCCLF _PSF = _PSO + 1 ; initial running process status PPPCCCLF
_PST = _PSF + 1 ; current process status
_PSI = _PST + 1 ; process stack index to save/restore
; register I9 saves/restores processor status ; register I9 saves/restores processor status
; (dd cc bb aa) aa: accumulator, bb: index X, cc: index Y, dd: processor status ; (dd cc bb aa) aa: accumulator, bb: index X, cc: index Y, dd: processor status
@ -127,8 +127,8 @@ _RPS = FN_FX - _RP ; running process table size
; process information indices ; process information indices
_RPV_I = 0 ; 4 bytes virtual memory address _RPV_I = 0 ; 4 bytes virtual memory address
_RPR_I = _RPV_I + 4 ; 2 bytes real memory address _RPR_I = _RPV_I + 4 ; 2 bytes real memory address
_RPS_I = _RPR_I + 2 ; 1 byte size of program (in pages) including allocated memory _RPS_I = _RPR_I + 2 ; 1 byte size in pages: code + allocated memory + context switching
_RPF_I = _RPS_I + 1 ; 1 byte status PPPCCCLF / P priority / C counter / L loaded / F finished _RPF_I = _RPS_I + 1 ; 1 byte status PPPCCCLF: P priority / C counter / L loaded / F finished
_RPE = _RPF_I + 1 ; size of running process entry _RPE = _RPF_I + 1 ; size of running process entry
_RPL = _RPS / _RPE ; number of running processes limit _RPL = _RPS / _RPE ; number of running processes limit