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Diffstat (limited to '')
-rw-r--r-- | security/nss/lib/freebl/verified/karamel/krmllib/dist/minimal/fstar_uint128_gcc64.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/verified/karamel/krmllib/dist/minimal/fstar_uint128_gcc64.h b/security/nss/lib/freebl/verified/karamel/krmllib/dist/minimal/fstar_uint128_gcc64.h new file mode 100644 index 0000000000..33cff6b6d4 --- /dev/null +++ b/security/nss/lib/freebl/verified/karamel/krmllib/dist/minimal/fstar_uint128_gcc64.h @@ -0,0 +1,225 @@ +/* Copyright (c) INRIA and Microsoft Corporation. All rights reserved. + Licensed under the Apache 2.0 License. */ + +/******************************************************************************/ +/* Machine integers (128-bit arithmetic) */ +/******************************************************************************/ + +/* This header contains two things. + * + * First, an implementation of 128-bit arithmetic suitable for 64-bit GCC and + * Clang, i.e. all the operations from FStar.UInt128. + * + * Second, 128-bit operations from C.Endianness (or LowStar.Endianness), + * suitable for any compiler and platform (via a series of ifdefs). This second + * part is unfortunate, and should be fixed by moving {load,store}128_{be,le} to + * FStar.UInt128 to avoid a maze of preprocessor guards and hand-written code. + * */ + +/* This file is used for both the minimal and generic krmllib distributions. As + * such, it assumes that the machine integers have been bundled the exact same + * way in both cases. */ + +#ifndef FSTAR_UINT128_GCC64 +#define FSTAR_UINT128_GCC64 + +#include "FStar_UInt128.h" +#include "FStar_UInt_8_16_32_64.h" +#include "LowStar_Endianness.h" + +/* GCC + using native unsigned __int128 support */ + +inline static uint128_t +load128_le(uint8_t *b) +{ + uint128_t l = (uint128_t)load64_le(b); + uint128_t h = (uint128_t)load64_le(b + 8); + return (h << 64 | l); +} + +inline static void +store128_le(uint8_t *b, uint128_t n) +{ + store64_le(b, (uint64_t)n); + store64_le(b + 8, (uint64_t)(n >> 64)); +} + +inline static uint128_t +load128_be(uint8_t *b) +{ + uint128_t h = (uint128_t)load64_be(b); + uint128_t l = (uint128_t)load64_be(b + 8); + return (h << 64 | l); +} + +inline static void +store128_be(uint8_t *b, uint128_t n) +{ + store64_be(b, (uint64_t)(n >> 64)); + store64_be(b + 8, (uint64_t)n); +} + +inline static uint128_t +FStar_UInt128_add(uint128_t x, uint128_t y) +{ + return x + y; +} + +inline static uint128_t +FStar_UInt128_mul(uint128_t x, uint128_t y) +{ + return x * y; +} + +inline static uint128_t +FStar_UInt128_add_mod(uint128_t x, uint128_t y) +{ + return x + y; +} + +inline static uint128_t +FStar_UInt128_sub(uint128_t x, uint128_t y) +{ + return x - y; +} + +inline static uint128_t +FStar_UInt128_sub_mod(uint128_t x, uint128_t y) +{ + return x - y; +} + +inline static uint128_t +FStar_UInt128_logand(uint128_t x, uint128_t y) +{ + return x & y; +} + +inline static uint128_t +FStar_UInt128_logor(uint128_t x, uint128_t y) +{ + return x | y; +} + +inline static uint128_t +FStar_UInt128_logxor(uint128_t x, uint128_t y) +{ + return x ^ y; +} + +inline static uint128_t +FStar_UInt128_lognot(uint128_t x) +{ + return ~x; +} + +inline static uint128_t +FStar_UInt128_shift_left(uint128_t x, uint32_t y) +{ + return x << y; +} + +inline static uint128_t +FStar_UInt128_shift_right(uint128_t x, uint32_t y) +{ + return x >> y; +} + +inline static uint128_t +FStar_UInt128_uint64_to_uint128(uint64_t x) +{ + return (uint128_t)x; +} + +inline static uint64_t +FStar_UInt128_uint128_to_uint64(uint128_t x) +{ + return (uint64_t)x; +} + +inline static uint128_t +FStar_UInt128_mul_wide(uint64_t x, uint64_t y) +{ + return ((uint128_t)x) * y; +} + +inline static uint128_t +FStar_UInt128_eq_mask(uint128_t x, uint128_t y) +{ + uint64_t mask = + FStar_UInt64_eq_mask((uint64_t)(x >> 64), (uint64_t)(y >> 64)) & + FStar_UInt64_eq_mask(x, y); + return ((uint128_t)mask) << 64 | mask; +} + +inline static uint128_t +FStar_UInt128_gte_mask(uint128_t x, uint128_t y) +{ + uint64_t mask = + (FStar_UInt64_gte_mask(x >> 64, y >> 64) & + ~(FStar_UInt64_eq_mask(x >> 64, y >> 64))) | + (FStar_UInt64_eq_mask(x >> 64, y >> 64) & FStar_UInt64_gte_mask(x, y)); + return ((uint128_t)mask) << 64 | mask; +} + +inline static uint64_t +FStar_UInt128___proj__Mkuint128__item__low(uint128_t x) +{ + return (uint64_t)x; +} + +inline static uint64_t +FStar_UInt128___proj__Mkuint128__item__high(uint128_t x) +{ + return (uint64_t)(x >> 64); +} + +inline static uint128_t +FStar_UInt128_add_underspec(uint128_t x, uint128_t y) +{ + return x + y; +} + +inline static uint128_t +FStar_UInt128_sub_underspec(uint128_t x, uint128_t y) +{ + return x - y; +} + +inline static bool +FStar_UInt128_eq(uint128_t x, uint128_t y) +{ + return x == y; +} + +inline static bool +FStar_UInt128_gt(uint128_t x, uint128_t y) +{ + return x > y; +} + +inline static bool +FStar_UInt128_lt(uint128_t x, uint128_t y) +{ + return x < y; +} + +inline static bool +FStar_UInt128_gte(uint128_t x, uint128_t y) +{ + return x >= y; +} + +inline static bool +FStar_UInt128_lte(uint128_t x, uint128_t y) +{ + return x <= y; +} + +inline static uint128_t +FStar_UInt128_mul32(uint64_t x, uint32_t y) +{ + return (uint128_t)x * (uint128_t)y; +} + +#endif |