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tls: P256: 64-bit optimizations

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function                                             old     new   delta
sp_256_proj_point_dbl_8                              421     428      +7
sp_256_point_from_bin2x32                             78      84      +6
sp_256_cmp_8                                          38      42      +4
sp_256_to_bin_8                                       28      31      +3
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(add/remove: 0/0 grow/shrink: 4/0 up/down: 20/0)               Total: 20 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2021-11-27 11:28:11 +01:00
parent 15f7d618ea
commit 4bc9da1071
2 changed files with 102 additions and 16 deletions
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2
include/platform.h
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@ -239,6 +239,7 @@ typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
# define move_from_unaligned_long(v, longp) ((v) = *(bb__aliased_long*)(longp))
# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
# define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
# define move_from_unaligned64(v, u64p) ((v) = *(bb__aliased_uint64_t*)(u64p))
# define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
# define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
# define move_to_unaligned64(u64p, v) (*(bb__aliased_uint64_t*)(u64p) = (v))
@ -250,6 +251,7 @@ typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
# define move_from_unaligned_long(v, longp) (memcpy(&(v), (longp), sizeof(long)))
# define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
# define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
# define move_from_unaligned64(v, u64p) (memcpy(&(v), (u64p), 8))
# define move_to_unaligned16(u16p, v) do { \
uint16_t __t = (v); \
memcpy((u16p), &__t, 2); \