/*
- * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2014 Cryptography Research, Inc.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* Originally written by Mike Hamburg
*/
-#ifndef __WORD_H__
-#define __WORD_H__
-
-#include <string.h>
-
-#include <assert.h>
-#include <openssl/e_os2.h>
-#include "arch_intrinsics.h"
-
-#include "curve448utils.h"
-
-#ifndef _BSD_SOURCE
-#define _BSD_SOURCE 1
-#endif
-
-#ifndef _DEFAULT_SOURCE
-#define _DEFAULT_SOURCE 1
-#endif
-
-#include <stdlib.h>
-
-#if defined(__ARM_NEON__)
-#include <arm_neon.h>
-#elif defined(__SSE2__)
- #if !defined(__GNUC__) || defined(__clang__) || __GNUC__ >= 5 || (__GNUC__==4 && __GNUC_MINOR__ >= 4)
- #include <immintrin.h>
- #else
- #include <emmintrin.h>
- #endif
-#endif
-
-#if (ARCH_WORD_BITS == 64)
- typedef uint64_t word_t, mask_t;
- typedef __uint128_t dword_t;
- typedef int32_t hsword_t;
- typedef int64_t sword_t;
- typedef __int128_t dsword_t;
-#elif (ARCH_WORD_BITS == 32)
- typedef uint32_t word_t, mask_t;
- typedef uint64_t dword_t;
- typedef int16_t hsword_t;
- typedef int32_t sword_t;
- typedef int64_t dsword_t;
-#else
- #error "For now, libdecaf only supports 32- and 64-bit architectures."
-#endif
-
-/* Scalar limbs are keyed off of the API word size instead of the arch word size. */
-#if DECAF_WORD_BITS == 64
- #define SC_LIMB(x) (x)
-#elif DECAF_WORD_BITS == 32
- #define SC_LIMB(x) ((uint32_t)x),(x>>32)
-#else
- #error "For now, libdecaf only supports 32- and 64-bit architectures."
-#endif
-
-#ifdef __ARM_NEON__
- typedef uint32x4_t vecmask_t;
-#elif defined(__clang__)
- typedef uint64_t uint64x2_t __attribute__((ext_vector_type(2)));
- typedef int64_t int64x2_t __attribute__((ext_vector_type(2)));
- typedef uint64_t uint64x4_t __attribute__((ext_vector_type(4)));
- typedef int64_t int64x4_t __attribute__((ext_vector_type(4)));
- typedef uint32_t uint32x4_t __attribute__((ext_vector_type(4)));
- typedef int32_t int32x4_t __attribute__((ext_vector_type(4)));
- typedef uint32_t uint32x2_t __attribute__((ext_vector_type(2)));
- typedef int32_t int32x2_t __attribute__((ext_vector_type(2)));
- typedef uint32_t uint32x8_t __attribute__((ext_vector_type(8)));
- typedef int32_t int32x8_t __attribute__((ext_vector_type(8)));
- typedef word_t vecmask_t __attribute__((ext_vector_type(4)));
-#else /* GCC, hopefully? */
- typedef uint64_t uint64x2_t __attribute__((vector_size(16)));
- typedef int64_t int64x2_t __attribute__((vector_size(16)));
- typedef uint64_t uint64x4_t __attribute__((vector_size(32)));
- typedef int64_t int64x4_t __attribute__((vector_size(32)));
- typedef uint32_t uint32x4_t __attribute__((vector_size(16)));
- typedef int32_t int32x4_t __attribute__((vector_size(16)));
- typedef uint32_t uint32x2_t __attribute__((vector_size(8)));
- typedef int32_t int32x2_t __attribute__((vector_size(8)));
- typedef uint32_t uint32x8_t __attribute__((vector_size(32)));
- typedef int32_t int32x8_t __attribute__((vector_size(32)));
- typedef word_t vecmask_t __attribute__((vector_size(32)));
-#endif
-
-#if defined(__AVX2__)
- #define VECTOR_ALIGNED __attribute__((aligned(32)))
- typedef uint32x8_t big_register_t;
- typedef uint64x4_t uint64xn_t;
- typedef uint32x8_t uint32xn_t;
-
- static ossl_inline big_register_t
- br_set_to_mask(mask_t x) {
- uint32_t y = (uint32_t)x;
- big_register_t ret = {y,y,y,y,y,y,y,y};
- return ret;
- }
-#elif defined(__SSE2__)
- #define VECTOR_ALIGNED __attribute__((aligned(16)))
- typedef uint32x4_t big_register_t;
- typedef uint64x2_t uint64xn_t;
- typedef uint32x4_t uint32xn_t;
-
- static ossl_inline big_register_t
- br_set_to_mask(mask_t x) {
- uint32_t y = x;
- big_register_t ret = {y,y,y,y};
- return ret;
- }
-#elif defined(__ARM_NEON__)
- #define VECTOR_ALIGNED __attribute__((aligned(16)))
- typedef uint32x4_t big_register_t;
- typedef uint64x2_t uint64xn_t;
- typedef uint32x4_t uint32xn_t;
-
- static ossl_inline big_register_t
- br_set_to_mask(mask_t x) {
- return vdupq_n_u32(x);
- }
-#elif defined(_WIN64) || defined(__amd64__) || defined(__X86_64__) \
- || defined(__aarch64__)
- #define VECTOR_ALIGNED __attribute__((aligned(8)))
- typedef uint64_t big_register_t, uint64xn_t;
-
- typedef uint32_t uint32xn_t;
- static ossl_inline big_register_t
- br_set_to_mask(mask_t x) {
- return (big_register_t)x;
- }
-#else
- #define VECTOR_ALIGNED __attribute__((aligned(4)))
- typedef uint64_t uint64xn_t;
- typedef uint32_t uint32xn_t;
- typedef uint32_t big_register_t;
-
- static ossl_inline big_register_t
- br_set_to_mask(mask_t x) {
- return (big_register_t)x;
- }
-#endif
-
-#if defined(__AVX2__)
- static ossl_inline big_register_t
- br_is_zero(big_register_t x) {
- return (big_register_t)(x == br_set_to_mask(0));
- }
-#elif defined(__SSE2__)
- static ossl_inline big_register_t
- br_is_zero(big_register_t x) {
- return (big_register_t)_mm_cmpeq_epi32((__m128i)x, _mm_setzero_si128());
- //return (big_register_t)(x == br_set_to_mask(0));
- }
-#elif defined(__ARM_NEON__)
- static ossl_inline big_register_t
- br_is_zero(big_register_t x) {
- return vceqq_u32(x,x^x);
- }
-#else
- #define br_is_zero word_is_zero
-#endif
+#ifndef HEADER_WORD_H
+# define HEADER_WORD_H
+
+# include <string.h>
+
+# include <assert.h>
+# include <openssl/e_os2.h>
+# include "arch_intrinsics.h"
+
+# include "curve448utils.h"
+# include <stdlib.h>
+
+# if defined(__ARM_NEON__)
+# include <arm_neon.h>
+# elif defined(__SSE2__)
+# if !defined(__GNUC__) || defined(__clang__) || __GNUC__ >= 5 \
+ || (__GNUC__==4 && __GNUC_MINOR__ >= 4)
+# include <immintrin.h>
+# else
+# include <emmintrin.h>
+# endif
+# endif
+
+# if (ARCH_WORD_BITS == 64)
+typedef uint64_t word_t, mask_t;
+typedef __uint128_t dword_t;
+typedef int32_t hsword_t;
+typedef int64_t sword_t;
+typedef __int128_t dsword_t;
+# elif (ARCH_WORD_BITS == 32)
+typedef uint32_t word_t, mask_t;
+typedef uint64_t dword_t;
+typedef int16_t hsword_t;
+typedef int32_t sword_t;
+typedef int64_t dsword_t;
+# else
+# error "For now, we only support 32- and 64-bit architectures."
+# endif
+
+/*
+ * Scalar limbs are keyed off of the API word size instead of the arch word
+ * size.
+ */
+# if C448_WORD_BITS == 64
+# define SC_LIMB(x) (x)
+# elif C448_WORD_BITS == 32
+# define SC_LIMB(x) ((uint32_t)x),(x >> 32)
+# else
+# error "For now we only support 32- and 64-bit architectures."
+# endif
+
/* PERF: vectorize vs unroll */
-#ifdef __clang__
-#if 100*__clang_major__ + __clang_minor__ > 305
-#define UNROLL _Pragma("clang loop unroll(full)")
-#endif
-#endif
+# ifdef __clang__
+# if 100*__clang_major__ + __clang_minor__ > 305
+# define UNROLL _Pragma("clang loop unroll(full)")
+# endif
+# endif
-#ifndef UNROLL
-#define UNROLL
-#endif
+# ifndef UNROLL
+# define UNROLL
+# endif
-/* The plan on booleans:
- *
- * The external interface uses decaf_bool_t, but this might be a different
- * size than our particular arch's word_t (and thus mask_t). Also, the caller
- * isn't guaranteed to pass it as nonzero. So bool_to_mask converts word sizes
- * and checks nonzero.
- *
- * On the flip side, mask_t is always -1 or 0, but it might be a different size
- * than decaf_bool_t.
- *
- * On the third hand, we have success vs boolean types, but that's handled in
- * common.h: it converts between decaf_bool_t and decaf_error_t.
+/*
+ * The plan on booleans: The external interface uses c448_bool_t, but this
+ * might be a different size than our particular arch's word_t (and thus
+ * mask_t). Also, the caller isn't guaranteed to pass it as nonzero. So
+ * bool_to_mask converts word sizes and checks nonzero. On the flip side,
+ * mask_t is always -1 or 0, but it might be a different size than
+ * c448_bool_t. On the third hand, we have success vs boolean types, but
+ * that's handled in common.h: it converts between c448_bool_t and
+ * c448_error_t.
*/
-static ossl_inline decaf_bool_t mask_to_bool (mask_t m) {
- return (decaf_sword_t)(sword_t)m;
+static ossl_inline c448_bool_t mask_to_bool(mask_t m)
+{
+ return (c448_sword_t)(sword_t)m;
}
-static ossl_inline mask_t bool_to_mask (decaf_bool_t m) {
+static ossl_inline mask_t bool_to_mask(c448_bool_t m)
+{
/* On most arches this will be optimized to a simple cast. */
mask_t ret = 0;
unsigned int i;
+ unsigned int limit = sizeof(c448_bool_t) / sizeof(mask_t);
+
+ if (limit < 1)
+ limit = 1;
+ for (i = 0; i < limit; i++)
+ ret |= ~word_is_zero(m >> (i * 8 * sizeof(word_t)));
- unsigned int limit = sizeof(decaf_bool_t)/sizeof(mask_t);
- if (limit < 1) limit = 1;
- for (i=0; i<limit; i++) {
- ret |= ~ word_is_zero(m >> (i*8*sizeof(word_t)));
- }
return ret;
}
-static ossl_inline void ignore_result ( decaf_bool_t boo ) {
+static ossl_inline void ignore_result(c448_bool_t boo)
+{
(void)boo;
}
-#endif /* __WORD_H__ */
+#endif /* HEADER_WORD_H */
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