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

PRELIMINARY DATA
70 WP channel matching
Note:
The ACTION_TRACE, ACTION_TRIG_OUT and ACTION_CHAIN_ALTER actions can occur
regardless of whether action_interrupt is enabled.
IA, OA, IV, BR and
WPC_PERF channels are
gated by SR.WATCH, all
others are un-gated
basic_enable ✓
asid_ok ✓
isa/cpumode ok ✓
chain ok ✓
specific matches ✓
action.exception == 1
raise a debug
exception (note, all
other actions are
ignored)
PARTIAL_WP_HIT
if (action.ecount)
decrement ecounter
INITIAL_WP_HIT
EXTRA_HIT (always
‘1’ for non-OA WP
channels)
Figure 2: Channel matching algorithm
FULL_WP_HIT
action.exception == 0
raise appropriate
actions
1.6.4 Behavior when more than one WPC channel matches an
instruction
D R A FT
This section describes the defined behavior when more than one WPC channel (IA,
IV or OA) matches on the same instruction. Most of the text describes the behavior
when in SHmedia mode. The SHcompact behavior is similar, but with some
divergence; it is described at the end.
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug 05-SA-10003 v1.0