IBM Cell Broadband Engine

TotalView displays Cell general registers in the Stack Frame Pane of the Process Window. The following table describes how TotalView treats each register, and the actions you can take with it.

 

Register	Description	Data Type	Edit	Dive	Specify in Expression
R0–R127	General Registers	union $spu_vec128	yes	yes	$r0–$r127
FPSCR	Floating point status and control register	$int128	yes	yes	$fpscr
OBJECT_ID	Context ID created by application; used later by profiling tools to uniquely identify context	$long_long	no	yes	$object_id
ID	Instruction dispatch register	$int	no	yes	$id
PC	Program counter	$code[272]	yes	yes	$pc
SP	Stack pointer	$int	yes	yes	$sp
FP	Floating point register	$int	no	yes	$fp
LR	Link register	$code[657]	yes	yes	$lr
SRR0	Interrupt return address register	$int	yes	no	$srr0
LSLR	Local storage limit register	$int	no	yes	$lslr
DECR	SPU decrementer	$int	yes	yes	$decr
DECR_STATUS	Decrementer status	$int	yes	yes	$decr_status
CNTL	Read access to the status register	$int	yes	yes	$cntl
EVENT_MASK	Event mask for SPU interrupts	$int	no	yes	$event_mask
EVENT_STATUS	Number of pending SPU events	$int	no	yes	$event_status
IBOX	Second SPU to CPU communication mailbox	$int	no	yes	$ibox
MBOX	First SPU to CPU communication mailbox	$int	no	yes	$mbox
WBOX	CPU to SPU communication mailbox	$int128	no	yes	$wbox
IBOX_STAT	Length of the IBOX queue	$int	no	yes	$ibox_stat
MBOX_STAT	Length of the MBOX queue	$int	no	yes	$mbox_stat
WBOX_STAT	Length of the WBOX queue	$int	no	yes	$wbox_stat
SIGNAL1	Signal notification channel	$int	no	yes	$signal1
SIGNAL1_TYPE	Behavior of signal1 notification channel	$int	no	yes	$signal1_type
SIGNAL2	Signal notification channel	$int	no	yes	$signal2
SIGNAL2_TYPE	Behavior of signal1 notification channel	$int	no	yes	$signal2_type
MFC	Access to the MFC DMA area	$long_long	no	yes	$mfg.