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

PRELIMINARY DATA
Debug protocols and interfaces 127
OA watchpoint trace message (7-bytes minimum, 16-bytes maximum)
Field
Size
Header bit
positions
Description
DATA_ADDRESS
4, 5, 6 or
8 bytes
N/A
If .DATA_FIELD_SIZE indicates a 0 byte store, this field
is 4 bytes in length.
If .DATA_FIELD_SIZE indicates a 1 byte store, this field
is 5 bytes in length. Bits [39:32] correspond to the
8-bits of data stored to memory.
If .DATA_FIELD_SIZE indicates a 2 byte store, this field
is 6 bytes in length. Bits [47:32] correspond to the
16-bits of data stored to memory.
If .DATA_FIELD_SIZE indicates a 4 byte store, this field
is 8 bytes in length. Bits [63:32] correspond to the
32-bits of data stored to memory.
If .DATA_FIELD_SIZE indicates an 8 byte store, this
field is 8 bytes in length. Bits [63:32] correspond to
bits [31:0] of the 64 bits of data stored to memory.
The meaning of bits [31:0] is dependant on the setting
of WPC.ADDR_IN_TRACE:
If .MUX_ADDR == 1, bits[31:0] correspond to the
operand address at which the triggering instruction
stored data to memory.
If .MUX_ADDR == 0, bits[31:0] correspond to bits
[63:32] of the 64 bits of data stored to memory by the
triggering instruction. They only contain valid
information if .DATA_FIELD_SIZE indicates an 8 byte
store.
For the store instructions that support misaligned
addresses, the contents of this field are described in
Handling of misaligned store instructions on page 134
D R A FT
Table 42: OA watchpoint trace message
05-SA-10003 v1.0
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug