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authorGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
committerGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
commitc71c03bda1e86c9d5198c5d83f712e695c4f2a1e (patch)
treeecb166cb3e2b7e2adb3b5e292245fefd23381ac8 /arch/sh/lib
parentea53c912f8a86a8567697115b6a0d8152beee5c8 (diff)
parent6a00f206debf8a5c8899055726ad127dbeeed098 (diff)
Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp
Conflicts: litmus/sched_cedf.c
Diffstat (limited to 'arch/sh/lib')
-rw-r--r--arch/sh/lib/Makefile2
-rw-r--r--arch/sh/lib/delay.c10
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index dab4d2129812..7b95f29e3174 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -30,4 +30,4 @@ lib-$(CONFIG_MMU) += copy_page.o __clear_user.o
30lib-$(CONFIG_MCOUNT) += mcount.o 30lib-$(CONFIG_MCOUNT) += mcount.o
31lib-y += $(memcpy-y) $(memset-y) $(udivsi3-y) 31lib-y += $(memcpy-y) $(memset-y) $(udivsi3-y)
32 32
33EXTRA_CFLAGS += -Werror 33ccflags-y := -Werror
diff --git a/arch/sh/lib/delay.c b/arch/sh/lib/delay.c
index faa8f86c0db4..0901b2f14e15 100644
--- a/arch/sh/lib/delay.c
+++ b/arch/sh/lib/delay.c
@@ -10,6 +10,16 @@
10void __delay(unsigned long loops) 10void __delay(unsigned long loops)
11{ 11{
12 __asm__ __volatile__( 12 __asm__ __volatile__(
13 /*
14 * ST40-300 appears to have an issue with this code,
15 * normally taking two cycles each loop, as with all
16 * other SH variants. If however the branch and the
17 * delay slot straddle an 8 byte boundary, this increases
18 * to 3 cycles.
19 * This align directive ensures this doesn't occur.
20 */
21 ".balign 8\n\t"
22
13 "tst %0, %0\n\t" 23 "tst %0, %0\n\t"
14 "1:\t" 24 "1:\t"
15 "bf/s 1b\n\t" 25 "bf/s 1b\n\t"