rpms/kernel/devel linux-2.6-ppc32-ucmpdi2.patch,NONE,1.1

[fedora-cvs-commits at redhat.com]

Author: dwmw2

Update of /cvs/dist/rpms/kernel/devel
In directory cvs.devel.redhat.com:/tmp/cvs-serv8965

Added Files:
	linux-2.6-ppc32-ucmpdi2.patch 
Log Message:
work around gcc bug

linux-2.6-ppc32-ucmpdi2.patch:
 misc_32.S   |   21 +++++++++++++++++++++
 ppc_ksyms.c |    2 ++
 2 files changed, 23 insertions(+)

--- NEW FILE linux-2.6-ppc32-ucmpdi2.patch ---
--- linux-2.6.19.ppc/arch/powerpc/kernel/misc_32.S~	2006-11-29 21:57:37.000000000 +0000
+++ linux-2.6.19.ppc/arch/powerpc/kernel/misc_32.S	2006-12-17 12:19:48.000000000 +0000
@@ -728,6 +728,27 @@ _GLOBAL(__lshrdi3)
 	or	r4,r4,r7	# LSW |= t2
 	blr
 
+/*
+ * __ucmpdi2: 64-bit comparison
+ *
+ * R3/R4 has 64 bit value A
+ * R5/R6 has 64 bit value B
+ * result in R3: 0 for A < B
+ *		 1 for A == B
+ *		 2 for A > B
+ */
+_GLOBAL(__ucmpdi2)
+	cmplw	r7,r3,r5	# compare high words
+	li	r3,0
+	blt	r7,2f		# a < b ... return 0
+	bgt	r7,1f		# a > b ... return 2
+	cmplw	r6,r4,r6	# compare low words
+	blt	r6,2f		# a < b ... return 0
+	li	r3,1
+	ble	r6,2f		# a = b ... return 1
+1:	li	r3,2
+2:	blr
+
 _GLOBAL(abs)
 	srawi	r4,r3,31
 	xor	r3,r3,r4
--- linux-2.6.19.ppc/arch/powerpc/kernel/ppc_ksyms.c~	2006-12-15 17:19:56.000000000 +0000
+++ linux-2.6.19.ppc/arch/powerpc/kernel/ppc_ksyms.c	2006-12-17 12:16:54.000000000 +0000
@@ -161,9 +161,11 @@ EXPORT_SYMBOL(to_tm);
 long long __ashrdi3(long long, int);
 long long __ashldi3(long long, int);
 long long __lshrdi3(long long, int);
+int __ucmpdi2(uint64_t, uint64_t);
 EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__ashldi3);
 EXPORT_SYMBOL(__lshrdi3);
+EXPORT_SYMBOL(__ucmpdi2);
 #endif
 
 EXPORT_SYMBOL(memcpy);