Age | Commit message (Collapse) | Author |
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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remove the requirement for aligned buffer
function old new delta
sha512_hash 262 297 +35
sha1_end 136 143 +7
passwd_main 1019 1023 +4
sha256_end 135 137 +2
count_lines 72 74 +2
sha256_hash 259 260 +1
popstring 164 158 -6
sha512_begin 88 81 -7
sha256_begin 44 37 -7
parse_expr 832 824 -8
bbunpack 446 438 -8
sha256_process_block64 529 520 -9
md5_end 166 151 -15
evaltreenr 817 802 -15
evaltree 817 802 -15
sha512_end 204 182 -22
sha512_process_block128 1444 1405 -39
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(add/remove: 0/0 grow/shrink: 6/11 up/down: 51/-151) Total: -100 bytes
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function old new delta
sha512_end 239 237 -2
sha256_end 162 160 -2
sha1_end 191 189 -2
md5_end 168 166 -2
__md5__magic 4 - -4
md5_crypt 627 621 -6
static.S 16 - -16
__md5_Init 42 - -42
static.P 64 - -64
__md5_Final 131 - -131
__md5_Update 153 - -153
static.C 268 12 -256
__md5_Transform 293 - -293
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(add/remove: 0/7 grow/shrink: 0/6 up/down: 0/-973) Total: -973 bytes
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text data bss dec hex filename
808035 611 6868 815514 c719a busybox_old
804472 611 6868 811951 c63af busybox_unstripped
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This time it resulted in small code changes:
function old new delta
nexpr 820 828 +8
tail_main 1200 1202 +2
wrapf 166 167 +1
parse_mount_options 227 209 -18
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(add/remove: 0/0 grow/shrink: 3/1 up/down: 11/-18) Total: -7 bytes
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trylink: explain how to modify link and drastically decrease amount
of padding (unfortunately, needs hand editing ATM).
*: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts
size saving: 0.5k
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to/from little endian or big endian, which is a NOP if that's what the current
platform already is.
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handle packets out of sequence if some data goes through the buffer and
some doesn't, B) it works on systems that can't handle aligned access,
C) we just have one code path to worry about.
While we're at it, sizeof() and RESERVE_CONFIG_BUFFER() really don't combine
well, which is why md5sum has been reading and processing data 4 bytes at a
time. I suspect that the existence of CONFIG_MD5_SIZE_VS_SPEED to do loop
unrolling and such in the algorithm was an attempt to work around that bug.
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- include the correct headers: applets need busybox.h while lib* need libbb.h
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md5_sha1_sum.c to convert some #ifdef CONFIG to if(ENABLE).)
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