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

PRELIMINARY DATA
Debug protocols and interfaces 131
FPF watchpoint trace message (15-bytes)
Field
Size
Header bit
positions
Description
OVER_STALL 1-bit [11]
RESERVED 4-bits [15:12]
ASID 1 byte N/A The ASID is always included in the trace message.
PC 4 bytes N/A A full PC address is always sent.
Note that this value does not reseed the PC reference
value.
FPF_DATA 8 bytes N/A The data written to the fast printf register is always a
64 bit value.
Field
Table 45: FPF Watchpoint Trace Message
PL Watchpoint trace message (7-bytes minimum, 20-bytes maximum)
Size
Header bit
positions
MESSAGE_TYPE 3-bits [2:0] 0b010 or 0b011
Description
SOURCE_MODULE 3-bits [5:3] 1 (SuperHyway bus analyzer)
EVENT_TYPE 5-bits [10:6] 0x00 through 0x01 (see Table 89: SH-5 evaluation
device trace message codes on page 247).
OVER_STALL 1-bit [11] Set to indicate that one or more trace messages
before this one were discarded because there was no
space available in the debug module FIFO.
D R A FT
Table 46: PL Watchpoint trace message
05-SA-10003 v1.0
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug