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liblzma: SHA-256: Do the byteswapping without a temporary buffer.

This commit is contained in:
Lasse Collin 2014-08-03 19:56:43 +03:00
parent 544aaa3d13
commit bc7650d87b
1 changed files with 1 additions and 12 deletions
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13
src/liblzma/check/sha256.c
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@ -31,7 +31,7 @@
// At least on x86, GCC is able to optimize this to a rotate instruction. // At least on x86, GCC is able to optimize this to a rotate instruction.
#define rotr_32(num, amount) ((num) >> (amount) | (num) << (32 - (amount))) #define rotr_32(num, amount) ((num) >> (amount) | (num) << (32 - (amount)))
#define blk0(i) (W[i] = data[i]) #define blk0(i) (W[i] = conv32be(data[i]))
#define blk2(i) (W[i & 15] += s1(W[(i - 2) & 15]) + W[(i - 7) & 15] \ #define blk2(i) (W[i & 15] += s1(W[(i - 2) & 15]) + W[(i - 7) & 15] \
+ s0(W[(i - 15) & 15])) + s0(W[(i - 15) & 15]))
@ -111,18 +111,7 @@ transform(uint32_t state[8], const uint32_t data[16])
static void static void
process(lzma_check_state *check) process(lzma_check_state *check)
{ {
#ifdef WORDS_BIGENDIAN
transform(check->state.sha256.state, check->buffer.u32); transform(check->state.sha256.state, check->buffer.u32);
#else
uint32_t data[16];
for (size_t i = 0; i < 16; ++i)
data[i] = bswap32(check->buffer.u32[i]);
transform(check->state.sha256.state, data);
#endif
return; return;
} }