SuperH (SH) 64-bit RISC Series SH-5 System Architecture, Volume ...

PRELIMINARY DATA
WP channel type OA 149
DM.OA_MATCH_DATAMASK:
DM.OA_MATCH_DATAMASK
0x100038
Field Bits Size Volatile? Synopsis Type
MASK [63:0] 64 — Data mask RW
Operation
When read
When written
HARD reset
1.12.4 SHcompact behavior
Defines a data mask.
A value of ‘1’ in a bit position causes the data comparator to
ignore the corresponding bit of the DM.OA_MATCH_DATAVAL
field.
A value of ‘0’ in a bit position makes the comparison significant
when the bit is valid for the size of data written by the triggering
instruction.
When the bit value is ‘0’ and the data bit is not valid for the size
of data written by the triggering instruction, the data comparator
ignores the corresponding bit in the comparison.
Returns current value
Updates value
Undefined
Table 55: DM.OA_MATCH_DATAMASK register definition
The SH-5 may implement SHcompact instruction execution by actual execution of a
sequence of SHmedia instructions. In such implementations, OA watchpoint
matches are made against this sequence of SHmedia instructions. At most a single
OA watchpoint will trigger for this sequence of instructions.
D R A FT
05-SA-10003 v1.0
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug