summaryrefslogtreecommitdiffstats
path: root/arch/sh/lib64/strlen.S
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2008-12-29 09:45:15 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-29 09:45:15 +0100
commite1df957670aef74ffd9a4ad93e6d2c90bf6b4845 (patch)
treebca1fcfef55b3e3e82c9a822b4ac6428fce2b419 /arch/sh/lib64/strlen.S
parent2b583d8bc8d7105b58d7481a4a0ceb718dac49c6 (diff)
parent3c92ec8ae91ecf59d88c798301833d7cf83f2179 (diff)
downloadop-kernel-dev-e1df957670aef74ffd9a4ad93e6d2c90bf6b4845.zip
op-kernel-dev-e1df957670aef74ffd9a4ad93e6d2c90bf6b4845.tar.gz
Merge branch 'linus' into perfcounters/core
Conflicts: fs/exec.c include/linux/init_task.h Simple context conflicts.
Diffstat (limited to 'arch/sh/lib64/strlen.S')
-rw-r--r--arch/sh/lib64/strlen.S33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sh/lib64/strlen.S b/arch/sh/lib64/strlen.S
new file mode 100644
index 0000000..cbc0d91
--- /dev/null
+++ b/arch/sh/lib64/strlen.S
@@ -0,0 +1,33 @@
+/*
+ * Simplistic strlen() implementation for SHmedia.
+ *
+ * Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org>
+ */
+
+ .section .text..SHmedia32,"ax"
+ .globl strlen
+ .type strlen,@function
+
+ .balign 16
+strlen:
+ ptabs r18, tr4
+
+ /*
+ * Note: We could easily deal with the NULL case here with a simple
+ * sanity check, though it seems that the behavior we want is to fault
+ * in the event that r2 == NULL, so we don't bother.
+ */
+/* beqi r2, 0, tr4 */ ! Sanity check
+
+ movi -1, r0
+ pta/l loop, tr0
+loop:
+ ld.b r2, 0, r1
+ addi r2, 1, r2
+ addi r0, 1, r0
+ bnei/l r1, 0, tr0
+
+ or r0, r63, r2
+ blink tr4, r63
+
+ .size strlen,.-strlen
OpenPOWER on IntegriCloud