NonStop S-Series Server Description Manual (G06.24+)

TNS Instruction Set Definition
HP NonStop S-Series Server Description Manual—520331-003
C-8
Symbol Definitions
Trap_Int_zero_divide = %60
Trap_Int_Overflow = %61
Trap_Bounds = %62
Trap_soft_Overflow = %63
Trap_Fp_Zero_divide = %64
Trap_Fp_Exp_Overflow = %65
Trap_Fp_Exp_Underflow= %66
TRACE = sysstack[ %121 ]
TRBASE = sysstack[ %117 ]
TRLIM = sysstack[ %120 ]
U
UC= ENV.<0>
UCSEGBASE = %h7000,0000
ULSEGBASE = %h7200,0000
V
V simulated overflow flag
VPTE(ppte)= vpte := 0
9
^ppte.pfn^ppte.r^ppte.d^(~ppte.v)
W
word = mem[ dseg, address ]
wordx = mem[ dseg, address + $XADR(X) ]
WphyPTE(ppte,frame,
tags)=
{
ppte.pfn := frame ;
ppte.N := tag.<10>;
ppte.G := tag.<11>;
ppte.P := tag.<12>;
ppte.R := tag.<13>;
ppte.D := tag.<14>;
ppte.V := ~tag.<15>;
};
X
X = if I.<5:6>=0 then 0 else R[I.<5:6>+4]
XB.<0:31> = simulated extended base address register
xbase= stack[ Lx*I.<5>+I.<10:15> : Lx*I.<5>+I.<10:15>+1 ]
XL.<0:31> = simulated extended limit address register
xmem[ x ] = if DS then
IPDS[ x]
16
else
CPDS[ x]
16
IPDS = the special process data space used by
all machine interrupt handlers
CPDS = the process data space as currently
mapped for the current user process
Table C-1. Definitions of Symbols (page 8 of 9)
Notation Description