SPARC Floating-Point Registers

TotalView : TotalView Reference Guide : PART IV Platforms and Operating Systems : Architectures : Sun SPARC : SPARC Floating-Point Registers

TotalView displays Power floating point registers in the Registers view. The next table describes how TotalView treats each floating-point register, and the actions you can take with each register.

Register	Description	Data Type	Edit	Dive	Specify in Expression
F0, F1, F0_F1	Floating-point registers (f registers), used singly	$float	no	yes	$f0, $f1, $f0_f1
F2 - F31	Floating-point registers (f registers), used singly	$float	yes	yes	$f2- $f31
F0, F1, F0_F1	Floating-point registers (f registers), used as pairs	$double	no	yes	$f0, $f1, $f0_f1
F0/F1 - F30/F31	Floating-point registers (f registers), used as pairs	$double	yes	yes	$2 - $f30_f31
FPCR	Floating-point control register	$int	no	no	$fpcr
FPSR	Floating-point status register	$int	yes	no	$fpsr

TotalView allows you to use these registers singly or in pairs, depending on how they are used by your program. For example, if you use F1 by itself, its type is $float, but if you use the F0/F1 pair, its type is $double.