F.1.2 Full Context Save And Restore - Texas Instruments TMS320C28x Reference Manual

F.1.2 Full Context Save and Restore
Figure F−2. Full Context Save/Restore
31
AH
PH
AR1
DP
DBGSTAT
PCH
On both C27x and C28x, the registers in Figure F−2 are automatically saved
on the stack on an interrupt or trap operation and automatically restored on an
IRET instruction.
16
T
Due to the register changes described in section F.1.1. C28x additional regis-
ters must be saved for a full-context store. Figure F−3 shows the difference
between a C27x and C28x full-context save/restore for an interrupt or trap.
1
Migration From C27x to C28x
Architecture Changes
ST0
AL
PL
AR0
ST1
IER
PCL
0
F-5