diff options
Diffstat (limited to 'src/Specific/montgomery64_2e243m9/feopp.c')
-rw-r--r-- | src/Specific/montgomery64_2e243m9/feopp.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/Specific/montgomery64_2e243m9/feopp.c b/src/Specific/montgomery64_2e243m9/feopp.c new file mode 100644 index 000000000..7fcf38323 --- /dev/null +++ b/src/Specific/montgomery64_2e243m9/feopp.c @@ -0,0 +1,38 @@ +#include <stdint.h> +#include <stdbool.h> +#include <x86intrin.h> +#include "liblow.h" + +#include "feopp.h" + +typedef unsigned int uint128_t __attribute__((mode(TI))); + +#if (defined(__GNUC__) || defined(__GNUG__)) && !(defined(__clang__)||defined(__INTEL_COMPILER)) +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81294 +#define _subborrow_u32 __builtin_ia32_sbb_u32 +#define _subborrow_u64 __builtin_ia32_sbb_u64 +#endif + +#undef force_inline +#define force_inline __attribute__((always_inline)) + +void force_inline feopp(uint64_t* out, uint64_t x5, uint64_t x6, uint64_t x4, uint64_t x2) +{ uint64_t x8; uint8_t x9 = _subborrow_u64(0x0, 0x0, x2, &x8); +{ uint64_t x11; uint8_t x12 = _subborrow_u64(x9, 0x0, x4, &x11); +{ uint64_t x14; uint8_t x15 = _subborrow_u64(x12, 0x0, x6, &x14); +{ uint64_t x17; uint8_t x18 = _subborrow_u64(x15, 0x0, x5, &x17); +{ uint64_t x19 = (uint64_t)cmovznz(x18, 0x0, 0xffffffffffffffffL); +{ uint64_t x20 = (x19 & 0xfffffffffffffff7L); +{ uint64_t x22; uint8_t x23 = _addcarryx_u64(0x0, x8, x20, &x22); +{ uint64_t x24 = (x19 & 0xffffffffffffffffL); +{ uint64_t x26; uint8_t x27 = _addcarryx_u64(x23, x11, x24, &x26); +{ uint64_t x28 = (x19 & 0xffffffffffffffffL); +{ uint64_t x30; uint8_t x31 = _addcarryx_u64(x27, x14, x28, &x30); +{ uint64_t x32 = (x19 & 0x7ffffffffffff); +{ uint64_t x34; uint8_t _ = _addcarryx_u64(x31, x17, x32, &x34); +out[0] = x34; +out[1] = x30; +out[2] = x26; +out[3] = x22; +}}}}}}}}}}}}} +// caller: uint64_t out[4]; |