User’s Manual
Preliminary PPC440x5 CPU Core
instalfa.fm.
September 12, 2002 Page 553 of 589
subfze
RT, RA, RB
Subtract (RA) from zero with carry-in.
(RT) ←¬(RA) + XER[CA].
Place carry-out in XER[CA].
434
subfze. CR[CR0]
subfzeo XER[SO, OV]
subfzeo. CR[CR0]
XER[SO, OV]
subi RT, RA, IM
Subtract EXTS(IM) from (RA|0).
Place result in RT.
Extended mnemonic for
addi RT,RA,−IM
258
subic RT, RA, IM
Subtract EXTS(IM) from (RA).
Place result in RT.
Place carry-out in XER[CA].
Extended mnemonic for
addic RT,RA,−IM
259
subic. RT, RA, IM
Subtract EXTS(IM) from (RA).
Place result in RT.
Place carry-out in XER[CA].
Extended mnemonic for
addic. RT,RA,−IM
CR[CR0] 260
subis RT, RA, IM
Subtract (IM || 160) from (RA|0).
Place result in RT.
Extended mnemonic for
addis RT,RA,−IM
261
tlbre RT, RA,WS
tlbentry←TLB[(RA)26:31]
if WS = 0
(RT)0:27←tlbentry[EPN,V,TS,SIZE]
(RT)28:31←40
MMUCR[STID]←tlbentry[TID]
else if WS = 1
(RT)0:21←tlbentry[RPN]
(RT)22:27←60
(RT)28:31←tlbentry[ERPN]
else if WS = 2
(RT)0:15←160
(RT)16:24←tlbentry[U0,U1,U2,U3,W,I,M,G,E]
(RT)25←0
(RT)26:31←tlbentry[UX,UW,UR,SX,SW,SR]
else (RT), MMUCR[STID]←undefined
435
tlbsx
RT,RA,RB
Search the TLB for a valid entry that translates the EA.
EA = (RA|0) + (RB)
if Rc = 1CR[CR0]0← 0
CR[CR0]1← 0
CR[CR0]3← XER[SO}
if Valid TLB entry matching EA and MMUCR[STID,STS] is in
the TLB then
(RT)← Index of matching TLB Entry
if Rc = 1 CR[CR0]2← 1
else (RT)←Undefined
if Rc = 1 CR[CR0]2← 0
437
tlbsx. CR[CR0]
TableA-1. PPC440x5 Instruction Syntax Summary (continued)
Mnemonic Operands Function Other Registers
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