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-rw-r--r--arch/powerpc/boot/string.S13
-rw-r--r--arch/powerpc/boot/string.h1
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/boot/string.S b/arch/powerpc/boot/string.S
index 2627558bcb7..643e4cb2f11 100644
--- a/arch/powerpc/boot/string.S
+++ b/arch/powerpc/boot/string.S
@@ -219,6 +219,19 @@ backwards_memcpy:
mtctr r7
b 1b
+ .globl memchr
+memchr:
+ cmpwi 0,r5,0
+ blelr
+ mtctr r5
+ addi r3,r3,-1
+1: lbzu r0,1(r3)
+ cmpw r0,r4
+ beqlr
+ bdnz 1b
+ li r3,0
+ blr
+
.globl memcmp
memcmp:
cmpwi 0,r5,0
diff --git a/arch/powerpc/boot/string.h b/arch/powerpc/boot/string.h
index 4650030d104..50091cc0eed 100644
--- a/arch/powerpc/boot/string.h
+++ b/arch/powerpc/boot/string.h
@@ -14,6 +14,7 @@ extern size_t strnlen(const char *s, size_t count);
extern void *memset(void *s, int c, size_t n);
extern void *memmove(void *dest, const void *src, unsigned long n);
extern void *memcpy(void *dest, const void *src, unsigned long n);
+extern void *memchr(const void *s, int c, size_t n);
extern int memcmp(const void *s1, const void *s2, size_t n);
#endif /* _PPC_BOOT_STRING_H_ */