X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/060df5ea7c632b1ac8cc8aac1fb59758165c2084..6d2010ae8f7a6078e10b361c6962983bab233e0f:/libkern/crypto/intel/sha1edp.h?ds=inline

diff --git a/libkern/crypto/intel/sha1edp.h b/libkern/crypto/intel/sha1edp.h
new file mode 100644
index 000000000..ba90122fd
--- /dev/null
+++ b/libkern/crypto/intel/sha1edp.h
@@ -0,0 +1,51 @@
+#if !defined sha1edp_h
+#define	sha1edp_h
+
+
+/*	This file is included in sha1edpLittleEndian.s and sha1edpBigEndian.s to
+	define the symbols below for use in assembly code.
+
+	It is also included in sha1_locl.h and compiled in C to test that the
+	hard-coded values here match the values used in C.  CC_SHA1_BLOCK_BYTES
+	is defined in another header, so an error will be generated if its
+	definition here conflicts.  The other symbols are tested below, with
+	the CheckAssertion definition.
+*/
+
+
+// Number of bytes in a SHA-1 block.
+#define	CC_SHA1_BLOCK_BYTES	64
+
+// Offset of h0 to h4 members in SHA-1 context structure.
+#define	Contexth0	(0*4)
+#define	Contexth1	(1*4)
+#define	Contexth2	(2*4)
+#define	Contexth3	(3*4)
+#define	Contexth4	(4*4)
+
+
+#if !defined __ASSEMBLER__
+
+	#include <stddef.h>	// Get offsetof macro.
+
+	/*	Declare CheckAssertion so that if any of the declarations below
+		differ from it, the compiler will report an error.
+	*/
+	extern char CheckAssertion[1];
+
+	/*	Ensure that Contexth0 through Contexth4 are the byte offsets of the
+		h0 through h4 members of the SHA-1 context structure.
+	*/
+	extern char CheckAssertion[Contexth0 == offsetof(SHA_CTX, h0)];
+	extern char CheckAssertion[Contexth1 == offsetof(SHA_CTX, h1)];
+	extern char CheckAssertion[Contexth2 == offsetof(SHA_CTX, h2)];
+	extern char CheckAssertion[Contexth3 == offsetof(SHA_CTX, h3)];
+	extern char CheckAssertion[Contexth4 == offsetof(SHA_CTX, h4)];
+		/*	If these assertions fail, change the definitions of Contexth0 to
+			Contexth4 to match the offsets of the members.
+		*/
+
+#endif	// !defined __ASSEMBLER__
+
+
+#endif	// !defined sha1edp_h