Commit 45458aa4 authored by John David Anglin's avatar John David Anglin Committed by Helge Deller
Browse files

parisc: Define depi_safe macro 



The depi instruction is similar to the extru instruction on 64-bit machines.
It leaves the most-significant 32 bits of the target register in an undefined
state.  On 64-bit machines, the macro uses depdi to perform safe deposits in
the least-significant 32 bits.

Signed-off-by: default avatarJohn David Anglin <dave.anglin@bell.net>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 3cbadd20

arch/parisc/include/asm/assembly.h

+10 −0
Original line number Diff line number Diff line
@@ -158,6 +158,16 @@ 
#endif

	.endm



	/* The depi instruction leaves the most significant 32 bits of the

	 * target register in an undefined state on PA 2.0 systems. */

	.macro depi_safe i, p, len, t

#ifdef CONFIG_64BIT

	depdi	\i, 32+(\p), \len, \t

#else

	depi	\i, \p, \len, \t

#endif

	.endm



	/* load 32-bit 'value' into 'reg' compensating for the ldil

	 * sign-extension when running in wide mode.

	 * WARNING!! neither 'value' nor 'reg' can be expressions