Debug Manual

Table Of Contents

Using Debug on TNS/R Processors

Debug Manual—421921-003

2-11

TNS/R Registers

Alias names for registers $01 through $31 and $F00 through $F09 appear in this list:

In TNS and accelerated modes, registers $01 through $10 contain temporary values

for various operations. Registers $13 through $25 and $28 through $30 maintain TNS

state information. For many registers, use depends on the execution mode: TNS

mode, accelerated mode, or native mode. A summary of how TNS/R registers are

used with the three execution modes is listed in Table 2-2 on page 2-13.

Note that Debug never reports valid contents for registers $26 and $27, which are

reserved for use by low-level millicode.

Also note that floating-point registers are available only on native programs where

floating-point instructions have been executed. Floating-point registers $F00 through

$F09 can be entered as $F0 through $F9. Floating-point registers $F10 through $F31

and $FCR31 have no alias names.

$00

$01 $AT $16 $S0

$02 $V0 $17 $S1

$03 $V1 $18 $S2

$04 $A0 $19 $S3

$05 $A1 $20 $S4

$06 $A2 $21 $S5

$07 $A3 $22 $S6

$08 $T0 $23 $S7

$09 $T1 $24 $T8

$10 $T2 $25 $T9

$11 $T3 $26 $K0

$12 $T4 $27 $K1

$13 $T5 $28 $GP

$14 $T6 $29 $SP

$15 $T7 $30 $S8 or $FP

$31 $RA

$F00 $F0 $F05 $F5

$F01 $F1 $F06 $F6

$F02 $F2 $F07 $F7

$F03 $F3 $F08 $F8

$F04 $F4 $F09 $F9