gdb: SPU
21.4.6 Cell Broadband Engine SPU architecture
---------------------------------------------
When GDB is debugging the Cell Broadband Engine SPU architecture, it
provides the following special commands:
'info spu event'
Display SPU event facility status. Shows current event mask and
pending event status.
'info spu signal'
Display SPU signal notification facility status. Shows pending
signal-control word and signal notification mode of both signal
notification channels.
'info spu mailbox'
Display SPU mailbox facility status. Shows all pending entries, in
order of processing, in each of the SPU Write Outbound, SPU Write
Outbound Interrupt, and SPU Read Inbound mailboxes.
'info spu dma'
Display MFC DMA status. Shows all pending commands in the MFC DMA
queue. For each entry, opcode, tag, class IDs, effective and local
store addresses and transfer size are shown.
'info spu proxydma'
Display MFC Proxy-DMA status. Shows all pending commands in the
MFC Proxy-DMA queue. For each entry, opcode, tag, class IDs,
effective and local store addresses and transfer size are shown.
When GDB is debugging a combined PowerPC/SPU application on the Cell
Broadband Engine, it provides in addition the following special
commands:
'set spu stop-on-load ARG'
Set whether to stop for new SPE threads. When set to 'on', GDB
will give control to the user when a new SPE thread enters its
'main' function. The default is 'off'.
'show spu stop-on-load'
Show whether to stop for new SPE threads.
'set spu auto-flush-cache ARG'
Set whether to automatically flush the software-managed cache.
When set to 'on', GDB will automatically cause the SPE
software-managed cache to be flushed whenever SPE execution stops.
This provides a consistent view of PowerPC memory that is accessed
via the cache. If an application does not use the software-managed
cache, this option has no effect.
'show spu auto-flush-cache'
Show whether to automatically flush the software-managed cache.
Info Catalog
gdb: HPPA
gdb: Architectures
gdb: PowerPC