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authorMichal Simek <monstr@monstr.eu>2011-09-23 08:46:24 +0200
committerMichal Simek <monstr@monstr.eu>2011-10-14 12:24:32 +0200
commitc8ae8a820880cf8bf3588752ac0ded6d4d218d50 (patch)
tree0a23e63968ccaeb4bd4bed523dc5cc7be48ed812 /arch/microblaze/lib
parent15ec090833eeb2ab242c049a68b6224345771619 (diff)
downloadlinux-c8ae8a820880cf8bf3588752ac0ded6d4d218d50.tar.gz
microblaze: Add __ucmpdi2() helper function
Add missing __ucmpdi2 helper function. Error log: kernel/built-in.o: In function `print_graph_duration': : undefined reference to `__ucmpdi2' kernel/built-in.o: In function `print_graph_duration': : undefined reference to `__ucmpdi2' Based on MIPS code. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze/lib')
-rw-r--r--arch/microblaze/lib/Makefile1
-rw-r--r--arch/microblaze/lib/ucmpdi2.c20
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile
index 10c320aa908..c13067b243c 100644
--- a/arch/microblaze/lib/Makefile
+++ b/arch/microblaze/lib/Makefile
@@ -25,5 +25,6 @@ lib-y += lshrdi3.o
lib-y += modsi3.o
lib-y += muldi3.o
lib-y += mulsi3.o
+lib-y += ucmpdi2.o
lib-y += udivsi3.o
lib-y += umodsi3.o
diff --git a/arch/microblaze/lib/ucmpdi2.c b/arch/microblaze/lib/ucmpdi2.c
new file mode 100644
index 00000000000..63ca105b671
--- /dev/null
+++ b/arch/microblaze/lib/ucmpdi2.c
@@ -0,0 +1,20 @@
+#include <linux/module.h>
+
+#include "libgcc.h"
+
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+ const DWunion au = {.ll = a};
+ const DWunion bu = {.ll = b};
+
+ if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
+ return 0;
+ else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
+ return 2;
+ if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+ return 0;
+ else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+ return 2;
+ return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);