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

PRELIMINARY DATA
134 Debug protocols and interfaces
Reference message (14-bytes)
Field
Size
Header bit
positions
Description
TIME_VALUE 5-bytes N/A The value of the 40-bit timestamp counter in the
debug module.
PC_ADDRESS 4-bytes The absolute 4-byte address of the shadow program
counter at the time this message is generated. This
address becomes the new reference PC value and the
relative address in a trace message which follows will
be based on this value.
BA_ADDRESS 4-bytes The absolute 4-byte reference address associated
with the SuperHyway bus analyzer. This value
becomes the new bus analyzer reference address and
the relative address in a bus analyzer trace message
which follows will be based on this value.
Byte name
in Table 49
Table 47: Reference message
Handling of misaligned store instructions
This section describes the contents of the DATA_FIELD_SIZE and DATA_ADDRESS fields
in OA and IV trace messages that result from STHI.Q, STHI.L, STLO.Q or STLO.L
instructions. The field contents are shown in Table 49. The 8 bytes within the
register containing the data for the store are identified by A, B, C, D, E, F, G, H. The
association between these labels and the bytes in the register is shown in Table 48.
Data source register for store (referred to as Ry in the instruction definitions)
MSB
Bits
[63:56]
Bits
[55:48]
Bits
[47:40]
Bits
[39:32]
Bits
[31:24]
Bits
[23:16]
Bits
[15:8]
D R A FT
H G F E D C B A
Table 48: Byte naming convention used in table Table 49
LSB
Bits
[7:0]
SuperH, Inc.
SH-5 System Architecture, Volume 3: Debug 05-SA-10003 v1.0