From 1025f3afc85be633451c4312ab26d179d47132e5 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Fri, 16 Sep 2011 02:18:56 -0700 Subject: [PATCH] Add an implementation for the memchr library function Change-Id: Icded479d246f7cce8a3d2154c69f75178fa513e1 Signed-off-by: Gabe Black Reviewed-on: http://review.coreboot.org/708 Reviewed-by: Ronald G. Minnich Tested-by: build bot (Jenkins) Reviewed-by: Mathias Krause --- src/include/string.h | 1 + src/lib/Makefile.inc | 2 ++ src/lib/memchr.c | 11 +++++++++++ 3 files changed, 14 insertions(+) create mode 100644 src/lib/memchr.c diff --git a/src/include/string.h b/src/include/string.h index 21689473c..708961b63 100644 --- a/src/include/string.h +++ b/src/include/string.h @@ -8,6 +8,7 @@ void *memcpy(void *dest, const void *src, size_t n); void *memmove(void *dest, const void *src, size_t n); void *memset(void *s, int c, size_t n); int memcmp(const void *s1, const void *s2, size_t n); +void *memchr(const void *s, int c, size_t n); #if !defined(__PRE_RAM__) int sprintf(char * buf, const char *fmt, ...); #endif diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 432e24e78..a31033cf5 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -1,6 +1,7 @@ romstage-y += memset.c +romstage-y += memchr.c romstage-y += memcpy.c romstage-y += memcmp.c romstage-y += cbfs.c @@ -15,6 +16,7 @@ romstage-$(CONFIG_CONSOLE_NE2K) += compute_ip_checksum.c romstage-$(CONFIG_USBDEBUG) += usbdebug.c ramstage-y += memset.c +ramstage-y += memchr.c ramstage-y += memcpy.c ramstage-y += memcmp.c ramstage-y += memmove.c diff --git a/src/lib/memchr.c b/src/lib/memchr.c new file mode 100644 index 000000000..a890dcead --- /dev/null +++ b/src/lib/memchr.c @@ -0,0 +1,11 @@ +#include +void *memchr(const void *s, int c, size_t n) +{ + const unsigned char *sc = s; + while (n--) { + if (*sc == (unsigned char)c) + return (void *)sc; + sc++; + } + return NULL; +} -- 2.25.1