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

PRELIMINARY DATA
128 Debug protocols and interfaces
IV watchpoint trace message (7-bytes minimum, 16-bytes maximum)
Field
Size
Header bit
positions
Description
MESSAGE_TYPE 3-bits [2:0] 0b010 or 0b011
SOURCE_MODULE 3-bits [5:3] 0 (WPC)
EVENT_TYPE 5-bits [10:6] 0x06 through 0x07 (see Table 89: SH-5 evaluation
device trace message codes on page 247).
OVER_STALL 1-bit [11]
PC_ABSOLUTE 1-bit [12]
DATA_FIELD_SIZE 3-bits [15:13] Defines how much data was stored to memory by the
triggering instruction.
Value - Description
0b000: The instruction which hit the watchpoint did
not write to a memory location
0b001: Undefined
0b010: Undefined
0b011: Undefined
0b100: 1 byte. The instruction which hit the watchpoint
did a 1 byte write to a memory location
0b101: 2 byte write (as above)
0b110: 4 byte write (as above)
0b111: 8 byte write (as above)
TIMESTAMP 0 or 1
byte
ASID 0 or 1
byte
PC 1, 2 or 4
bytes
N/A
N/A
N/A
D R A FT
Table 43: IV watchpoint trace message
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug 05-SA-10003 v1.0