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69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
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/* Copyright (c) INRIA and Microsoft Corporation. All rights reserved.
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Licensed under the Apache 2.0 License. */
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#ifndef FSTAR_UINT128_STRUCT_ENDIANNESS_H
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#define FSTAR_UINT128_STRUCT_ENDIANNESS_H
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/* Hand-written implementation of endianness-related uint128 functions
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* for the extracted uint128 implementation */
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/* Access 64-bit fields within the int128. */
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#define HIGH64_OF(x) ((x)->high)
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#define LOW64_OF(x) ((x)->low)
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/* A series of definitions written using pointers. */
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inline static void load128_le_(uint8_t *b, uint128_t *r) {
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LOW64_OF(r) = load64_le(b);
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HIGH64_OF(r) = load64_le(b + 8);
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}
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inline static void store128_le_(uint8_t *b, uint128_t *n) {
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store64_le(b, LOW64_OF(n));
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store64_le(b + 8, HIGH64_OF(n));
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}
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inline static void load128_be_(uint8_t *b, uint128_t *r) {
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HIGH64_OF(r) = load64_be(b);
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LOW64_OF(r) = load64_be(b + 8);
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}
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inline static void store128_be_(uint8_t *b, uint128_t *n) {
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store64_be(b, HIGH64_OF(n));
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store64_be(b + 8, LOW64_OF(n));
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}
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#ifndef KRML_NOSTRUCT_PASSING
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inline static uint128_t load128_le(uint8_t *b) {
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uint128_t r;
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load128_le_(b, &r);
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return r;
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}
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inline static void store128_le(uint8_t *b, uint128_t n) {
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store128_le_(b, &n);
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}
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inline static uint128_t load128_be(uint8_t *b) {
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uint128_t r;
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load128_be_(b, &r);
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return r;
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}
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inline static void store128_be(uint8_t *b, uint128_t n) {
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store128_be_(b, &n);
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}
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#else /* !defined(KRML_STRUCT_PASSING) */
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# define print128 print128_
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# define load128_le load128_le_
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# define store128_le store128_le_
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# define load128_be load128_be_
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# define store128_be store128_be_
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#endif /* KRML_STRUCT_PASSING */
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#endif
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