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Commit 41b93b23 authored by Bharat Bhushan's avatar Bharat Bhushan Committed by Benjamin Herrenschmidt
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powerpc: Added __cmpdi2 for signed 64bit comparision 



This was missing on powerpc and I am getting compilation error
drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2'
drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2'

Signed-off-by: default avatarBharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 8616dff5

arch/powerpc/kernel/misc_32.S

+14 −0
Original line number Diff line number Diff line
@@ -658,6 +658,20 @@ _GLOBAL(__lshrdi3) 
	or	r4,r4,r7	# LSW |= t2

	blr



/*

 * 64-bit comparison: __cmpdi2(s64 a, s64 b)

 * Returns 0 if a < b, 1 if a == b, 2 if a > b.

 */

_GLOBAL(__cmpdi2)

	cmpw	r3,r5

	li	r3,1

	bne	1f

	cmplw	r4,r6

	beqlr

1:	li	r3,0

	bltlr

	li	r3,2

	blr

/*

 * 64-bit comparison: __ucmpdi2(u64 a, u64 b)

 * Returns 0 if a < b, 1 if a == b, 2 if a > b.

arch/powerpc/kernel/ppc_ksyms.c

+2 −0
Original line number Diff line number Diff line
@@ -145,6 +145,8 @@ EXPORT_SYMBOL(__ashldi3); 
EXPORT_SYMBOL(__lshrdi3);

int __ucmpdi2(unsigned long long, unsigned long long);

EXPORT_SYMBOL(__ucmpdi2);

int __cmpdi2(long long, long long);

EXPORT_SYMBOL(__cmpdi2);

#endif

long long __bswapdi2(long long);

EXPORT_SYMBOL(__bswapdi2);