Security-57336.1.9.tar.gz

[apple/security.git] / OSX / libsecurity_cryptkit / lib / giantPort_PPC.h

diff --git a/OSX/libsecurity_cryptkit/lib/giantPort_PPC.h b/OSX/libsecurity_cryptkit/lib/giantPort_PPC.h
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+/* Copyright (c) 1998,2011,2014 Apple Inc.  All Rights Reserved.
+ *
+ * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
+ * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
+ * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
+ * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
+ * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
+ * EXPOSE YOU TO LIABILITY.
+ ***************************************************************************
+ *
+ * giantPort_PPC.h - PPC-dependent giant definitions.
+ *
+ * Revision History
+ * ----------------
+ * 10/06/98            ap
+ *     Changed to compile with C++.
+ * 06 Apr 1998 at Apple
+ *     Created.
+ */
+
+#ifndef        _CK_NSGIANT_PORT_PPC_H_
+#define _CK_NSGIANT_PORT_PPC_H_
+
+#include "feeDebug.h"
+#include "platform.h"
+#include "giantIntegers.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**** FIXME - implement asm giant digits! ****/
+/*
+ * 0 ==> use function declarations from this file and implementation
+ *       in giantPort_PPC.c
+ * 1 ==> use static inline C function in giantPort_Generic.h
+ */
+/*@@@ HACK @@@
+#if defined NeXT
+#define PPC_GIANT_PORT_INLINE  1
+#else
+#define PPC_GIANT_PORT_INLINE  0
+#endif
+*/
+#define PPC_GIANT_PORT_INLINE  1
+
+#if    PPC_GIANT_PORT_INLINE
+
+#include "giantPort_Generic.h"
+
+#else  // PPC_GIANT_PORT_INLINE
+
+/*
+ * We'll be using the compiler's 64-bit long long for these routines.
+ *
+ * Mask for upper word.
+ */
+#define GIANT_UPPER_DIGIT_MASK (~(unsigned long long(GIANT_DIGIT_MASK)))
+
+/*
+ * Multiple-precision arithmetic routines/macros. C for now, eventually
+ * they'll be in assembly.
+ */
+
+/*
+ * Add two digits, return sum. Carry bit returned as an out parameter.
+ * This should work any size giantDigits up to unsigned int.
+ */
+extern giantDigit giantAddDigits(
+       giantDigit dig1,
+       giantDigit dig2,
+       giantDigit *carry);                     /* RETURNED, 0 or 1 */
+
+/*
+ * Add a single digit value to a double digit accumulator in place.
+ * Carry out of the MSD of the accumulator is not handled.
+ */
+void giantAddDouble(
+       giantDigit *accLow,                     /* IN/OUT */
+       giantDigit *accHigh,                    /* IN/OUT */
+       giantDigit val);
+
+
+/*
+ * Subtract a - b, return difference. Borrow bit returned as an out parameter.
+ */
+giantDigit giantSubDigits(
+       giantDigit a,
+       giantDigit b,
+       giantDigit *borrow);                    /* RETURNED, 0 or 1 */
+
+
+/*
+ * Multiply two digits, return two digits.
+ */
+void giantMulDigits(
+       giantDigit      dig1,
+       giantDigit      dig2,
+       giantDigit      *lowProduct,            /* RETURNED, low digit */
+       giantDigit      *hiProduct);            /* RETURNED, high digit */
+
+/*
+ * Multiply a vector of giantDigits, candVector, by a single giantDigit,
+ * plierDigit, adding results into prodVector. Returns m.s. digit from
+ * final multiply; only candLength digits of *prodVector will be written.
+ */
+giantDigit VectorMultiply(
+       giantDigit plierDigit,
+       giantDigit *candVector,
+       unsigned candLength,
+       giantDigit *prodVector);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !PPC_GIANT_PORT_INLINE */
+
+#endif /*_CK_NSGIANT_PORT_PPC_H_*/