emo/busybox
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sha256/512: code shrink. Run-tested.

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function                                             old     new   delta
sha512_process_block128                                -    1444   +1444
sha1_process_block64                                   -     542    +542
sha256_process_block64                                 -     529    +529
K512_lo                                                -     320    +320
K256                                                   -     320    +320
init512_lo                                             -      32     +32
init256                                                -      32     +32
sha1_hash                                             99     128     +29
sha256_end                                           160     135     -25
sha1_end                                             189     160     -29
sha512_end                                           237     204     -33
sha256_begin                                          77      44     -33
sha512_begin                                         154      88     -66
sha256_hash                                          338     259     -79
sha512_hash                                          358     262     -96
sha1_compile                                         542       -    -542
sha256_process_block                                 594       -    -594
static.K                                             896       -    -896
sha512_process_block                                1861       -   -1861
------------------------------------------------------------------------------
(add/remove: 7/4 grow/shrink: 1/7 up/down: 3248/-4254)      Total: -1006 bytes
   text    data     bss     dec     hex filename
 808013     468    7856  816337   c74d1 busybox_old
 807007     468    7856  815331   c70e3 busybox_unstripped
This commit is contained in:
Denis Vlasenko
2009-03-11 21:15:51 +00:00
parent 54ac03a618
commit 98c87f7575
2 changed files with 255 additions and 286 deletions
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16
include/libbb.h
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@@ -1321,27 +1321,27 @@ extern const char bb_uuenc_tbl_std[];
void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC;
typedef struct sha1_ctx_t {
uint32_t count[2];
uint64_t total64;
uint32_t wbuffer[16]; /* NB: always correctly aligned for uint64_t */
uint32_t hash[5];
uint32_t wbuf[16];
} sha1_ctx_t;
void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC;
void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC;
typedef struct sha256_ctx_t {
unsigned wbuflen;
uint32_t H[8];
uint32_t total[2]; /* rename to "count"? */
uint32_t buflen;
char buffer[128]; /* NB: always correctly aligned for uint32_t */
uint64_t total64;
char wbuffer[64*2]; /* NB: always correctly aligned for uint64_t */
} sha256_ctx_t;
void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
void sha256_hash(const void *buffer, size_t len, sha256_ctx_t *ctx) FAST_FUNC;
void sha256_end(void *resbuf, sha256_ctx_t *ctx) FAST_FUNC;
typedef struct sha512_ctx_t {
unsigned wbuflen;
uint64_t H[8];
uint64_t total[2];
uint64_t buflen;
char buffer[256]; /* NB: always correctly aligned for uint64_t */
uint64_t total64[2];
char wbuffer[128*2]; /* NB: always correctly aligned for uint64_t */
} sha512_ctx_t;
void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;
void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC;