X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flib%2Fendian.h;fp=src%2Flib%2Fendian.h;h=7e5fc32bbbecbfe71383d0d4e5b7ea1090404462;hb=b4e9c266d656c6b595cc57920a34937776acc300;hp=0000000000000000000000000000000000000000;hpb=6ffbc2b68c34c2d1e42d5f6bcd8f2b94b82d05d7;p=pintos-anon

diff --git a/src/lib/endian.h b/src/lib/endian.h
new file mode 100644
index 0000000..7e5fc32
--- /dev/null
+++ b/src/lib/endian.h
@@ -0,0 +1,19 @@
+#ifndef __LIB_ENDIAN_H
+#define __LIB_ENDIAN_H
+
+
+#define endian_swap32(x)       ((((x) & 0xff000000) >> 24) | \
+		                   (((x) & 0x00ff0000) >> 8)  | \
+		                   (((x) & 0x0000ff00) << 8)  | \
+		                   (((x) & 0x000000ff) << 24))
+#define endian_swap16(x)        ((((x) & 0xff00)>> 8) | (((x) & 0x00ff) << 8))
+#define endian_swap24(x)	(((x) >> 16) & 0xff) | (((x) & 0xff) << 16) | ((x) & 0xff00)
+
+#define be32_to_machine(x)	endian_swap32(x)
+#define be16_to_machine(x)	endian_swap16(x)
+#define be24_to_machine(x)	endian_swap24(x)
+#define machine_to_be32(x)	endian_swap32(x)
+#define machine_to_be16(x)	endian_swap16(x)
+#define machine_to_be24(x)	endian_swap24(x)
+
+#endif