diff options
| author | Shuah Khan <shuahkh@osg.samsung.com> | 2016-09-21 16:54:36 -0600 |
|---|---|---|
| committer | Shuah Khan <shuahkh@osg.samsung.com> | 2016-09-23 13:07:27 -0600 |
| commit | a67cd5482f37a255b9990ddb942aa7009dcba12f (patch) | |
| tree | a12daae75e787e134d2b0813fa089ce2365e2ac8 /tools/pcmcia | |
| parent | 3ca9760fdfa411f7e5db54b3437fbb858d2ec825 (diff) | |
tools: move pcmcia crc32hash tool from Documentation
Move pcmcia crc32hash tool from Documentation to tools/pcmcia and
remove it from Documentation Makefile. Update location information
for this tool. Create a new Makefile to build pcmcia. It can be built
from top level directory or from pcmcia directory:
Run make -C tools/pcmcia or cd tools/pcmcia; make
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Diffstat (limited to 'tools/pcmcia')
| -rw-r--r-- | tools/pcmcia/.gitignore | 1 | ||||
| -rw-r--r-- | tools/pcmcia/Makefile | 9 | ||||
| -rw-r--r-- | tools/pcmcia/crc32hash.c | 32 |
3 files changed, 42 insertions, 0 deletions
diff --git a/tools/pcmcia/.gitignore b/tools/pcmcia/.gitignore new file mode 100644 index 000000000000..53d081336757 --- /dev/null +++ b/tools/pcmcia/.gitignore @@ -0,0 +1 @@ +crc32hash diff --git a/tools/pcmcia/Makefile b/tools/pcmcia/Makefile new file mode 100644 index 000000000000..81a7498c5cd9 --- /dev/null +++ b/tools/pcmcia/Makefile @@ -0,0 +1,9 @@ +CC := $(CROSS_COMPILE)gcc +CFLAGS := -I../../usr/include + +PROGS := crc32hash + +all: $(PROGS) + +clean: + rm -fr $(PROGS) diff --git a/tools/pcmcia/crc32hash.c b/tools/pcmcia/crc32hash.c new file mode 100644 index 000000000000..44f8beea7260 --- /dev/null +++ b/tools/pcmcia/crc32hash.c @@ -0,0 +1,32 @@ +/* crc32hash.c - derived from linux/lib/crc32.c, GNU GPL v2 */ +/* Usage example: +$ ./crc32hash "Dual Speed" +*/ + +#include <string.h> +#include <stdio.h> +#include <ctype.h> +#include <stdlib.h> + +static unsigned int crc32(unsigned char const *p, unsigned int len) +{ + int i; + unsigned int crc = 0; + while (len--) { + crc ^= *p++; + for (i = 0; i < 8; i++) + crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0); + } + return crc; +} + +int main(int argc, char **argv) { + unsigned int result; + if (argc != 2) { + printf("no string passed as argument\n"); + return -1; + } + result = crc32((unsigned char const *)argv[1], strlen(argv[1])); + printf("0x%x\n", result); + return 0; +} |