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Author SHA1 Message Date
Denys Vlasenko
524fa29a93 bzip2: eliminate write-only local numQSorted 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 17:30:16 +01:00
Denys Vlasenko
2109fce410 bzip2: make locals in mainSort() saner, convert one of them from uint16 to unsigned 
function                                             old     new   delta
mainSort                                            1192    1178     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 17:22:06 +01:00
Denys Vlasenko
aaa3818a75 bzip2: remove redundant loop termination check in mainSort() 
function                                             old     new   delta
mainSort                                            1202    1192     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 16:43:33 +01:00
Denys Vlasenko
e59e5ff96e bzip2: reduce indentation, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:59:46 +01:00
Denys Vlasenko
9e5662ea74 bzip2: reuse zPend processing code 
function                                             old     new   delta
generateMTFValues                                    378     357     -21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:53:17 +01:00
Denys Vlasenko
2cfe10a558 bzip2: shrink makeMaps_e() 
function                                             old     new   delta
generateMTFValues                                    378     368     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:31:54 +01:00
Denys Vlasenko
1cbcb02316 bzip2: optimize zPend variable code 
function                                             old     new   delta
generateMTFValues                                    433     378     -55

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 15:26:00 +01:00
Denys Vlasenko
fc228b48c9 bzip2: have two separate "store bit 0" and "store bit 1" functions 
function                                             old     new   delta
sendMTFValues                                       2051    2085     +34
bsW1_0                                                 -      33     +33
BZ2_compressBlock                                    225     223      -2
bsW1                                                  52       -     -52
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/1 up/down: 67/-54)             Total: 13 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 14:56:43 +01:00
Denys Vlasenko
feafb3423e bzip2: ~1% speedup by special-casing "store 1 bit" function 
function                                             old     new   delta
bsW1                                                   -      52     +52
BZ2_compressBlock                                    230     225      -5
BZ2_blockSort                                        125     118      -7
sendMTFValues                                       2070    2051     -19
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 52/-31)             Total: 21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 04:43:46 +01:00
Denys Vlasenko
982c44d030 bzip2: rewrite bit of code which depends on integer overflow 
function                                             old     new   delta
sendMTFValues                                       2093    2070     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 03:34:40 +01:00
Denys Vlasenko
83dd4ff696 bzip2: delete write-only fave[] array 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 03:17:48 +01:00
Denys Vlasenko
3a2c97bd12 bgip2: fewer specifically-sized [u]int32_t's locals in sendMTFValues 
Generic ints/unsigneds are usually fine. Yes, really.

function                                             old     new   delta
sendMTFValues                                       2100    2093      -7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 03:14:07 +01:00
Denys Vlasenko
359230da8e bzip2: code shrink 
function                                             old     new   delta
sendMTFValues                                       2111    2100     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 02:03:42 +01:00
Denys Vlasenko
e594fb2171 bzip2: code shrink 
function                                             old     new   delta
BZ2_compressBlock                                    225     230      +5
handle_compress                                      356     355      -1
bsW16                                                 59      56      -3
bsW                                                   64      61      -3
bsFinishWrite                                         37      32      -5
prepare_new_block                                     48      34     -14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/5 up/down: 5/-26)             Total: -21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-03 01:30:12 +01:00
Denys Vlasenko
125c3ff4b1 bzip2: code shrink 
function                                             old     new   delta
bsW16                                                  -      59     +59
sendMTFValues                                       2116    2111      -5
bsPutU16                                              36       -     -36
bsPutU32                                              76      31     -45
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 59/-86)            Total: -27 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-02 20:59:28 +01:00
Denys Vlasenko
da49e7057a cksum: code shrink 
function                                             old     new   delta
cksum_main                                           281     262     -19

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 11:44:52 +01:00
Denys Vlasenko
ddacb03e87 libbb: commonalize a bit of little-endian CRC32 table generation code 
function                                             old     new   delta
global_crc32_new_table_le                              -      11     +11
crc32_new_table_le                                     -       9      +9
inflate_unzip_internal                               560     556      -4
flash_eraseall_main                                  823     819      -4
unpack_xz_stream                                    2403    2394      -9
lzop_main                                            121     112      -9
gzip_main                                            187     178      -9
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/5 up/down: 20/-35)            Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 10:56:19 +01:00
Denys Vlasenko
06076494da udhcpd: use ptr_to_globals for its lone global data (g_leases) 
function                                             old     new   delta
udhcpd_main                                         1461    1463      +2
add_lease                                            320     318      -2
g_leases                                               4       -      -4
write_leases                                         223     214      -9
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/2 up/down: 2/-15)             Total: -13 bytes
   text	   data	    bss	    dec	    hex	filename
 933232	    481	   6856	 940569	  e5a19	busybox_old
 933223	    481	   6852	 940556	  e5a0c	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 10:41:14 +01:00
Aaro Koskinen
d15d7a0a4b cp: implement -T 
Implement "cp -T". Some Linux kernel Makefiles started using this recently,
so allow also building on systems using busybox cp.

function                                             old     new   delta
cp_main                                              360     428     +68
copy_file                                           1678    1676      -2
packed_usage                                       32290   32259     -31
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 76/-39)             Total: 35 bytes

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 09:30:59 +01:00
Denys Vlasenko
d6f0f03b68 libarchive: move bbunpack constants to bb_archive.h 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 09:13:14 +01:00
Denys Vlasenko
99ac1759dd lzop: code shrink 
function                                             old     new   delta
lzo_decompress                                       526     524      -2
lzo_compress                                         473     470      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 01:41:31 +01:00
Denys Vlasenko
97058d0585 unlzop: fix --help: it has -U instead of -k 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 01:03:50 +01:00
Denys Vlasenko
1b8ac93a20 bzip2: code shrink, stop using global data variable 
function                                             old     new   delta
compressStream                                       523     538     +15
level                                                  1       -      -1
bzip2_main                                           110      73     -37
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/1 up/down: 15/-38)            Total: -23 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-02-01 01:00:58 +01:00
Denys Vlasenko
54a174eb01 gzip: "compressed_len" is unused, stop wasting code and time calculating it 
function                                             old     new   delta
flush_block                                          595     523     -72

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 23:26:11 +01:00
Denys Vlasenko
a142926029 gzip: remove unnecessary forward declarations, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 18:16:34 +01:00
Denys Vlasenko
919bc9d43c gzip: flush output buffer after stored blocks only if necessary 
function                                             old     new   delta
flush_block                                          671     680      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 17:37:32 +01:00
Denys Vlasenko
f21ebeece5 gzip: flush output buffer after stored blocks, they are not 32-bit aligned 
function                                             old     new   delta
flush_block                                          665     671      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 17:19:59 +01:00
Denys Vlasenko
ba63d70e2d gzip: make debugging of bits_sent less ugly, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 17:00:41 +01:00
Denys Vlasenko
26eea71c87 gzip: code shrink 
function                                             old     new   delta
flush_block                                          668     665      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 16:36:17 +01:00
Denys Vlasenko
05251986c7 gzip: code shrink 
Use one memset to clear part of G1, and all of G2.

function                                             old     new   delta
pack_gzip                                            838     828     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 16:11:56 +01:00
Denys Vlasenko
8fd35a1fa6 gzip: code shrink 
function                                             old     new   delta
pack_gzip                                            861     838     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 15:42:45 +01:00
Denys Vlasenko
468731a86b gzip: code shrink and speedup 
function                                             old     new   delta
pack_gzip                                            908     861     -47

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 15:32:32 +01:00
Denys Vlasenko
631c16855a gzip: optionally faster put_32bit() 
function                                             old     new   delta
put_32bit                                             22      55     +33

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 00:42:29 +01:00
Denys Vlasenko
b7dfbbcdaa gzip: speed up send_bits() 
Replace one RMW op with store. This speeds up gzip of a png file by ~2%.

function                                             old     new   delta
send_bits                                             62      66      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-31 00:01:06 +01:00
Denys Vlasenko
d7500f856d gzip: use "unsigned" type for bit fields and bit counts 
This does not change any logic, those values should always be positive.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-30 23:53:38 +01:00
Denys Vlasenko
6ba6a6f28e gzip: use wider (32-bit, not 16) bi_buf 
function                                             old     new   delta
bi_windup                                             76      74      -2
send_bits                                             70      62      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-30 23:47:45 +01:00
Denys Vlasenko
e4c4e6ddc3 gzip: code shrink 
function                                             old     new   delta
send_bits                                             92      70     -22

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-30 22:37:06 +01:00
Denys Vlasenko
9c499a5af4 gzip: code shrink 
function                                             old     new   delta
fill_window_if_needed                                  -     238    +238
deflate                                              924     907     -17
pack_gzip                                            809     790     -19
fill_window                                          216       -    -216
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 238/-252)          Total: -14 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-30 18:15:39 +01:00
Denys Vlasenko
c6d2a26fac gzip: code shrink (consolidate zeroing on reinit) 
function                                             old     new   delta
deflate                                                -     938    +938
pack_gzip                                           1903     923    -980

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-30 17:39:57 +01:00
Denys Vlasenko
749575d3c5 hush: protect against self-modifying trap code 
function                                             old     new   delta
check_and_run_traps                                  211     236     +25

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-30 04:29:03 +01:00
Denys Vlasenko
6f9442ff30 ash: make it possible to disable "const global ptr" optimization 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-28 20:41:23 +01:00
Denys Vlasenko
f19e3c1c6c shell: handle $((NUM++...) like bash does. Closes 10706 
function                                             old     new   delta
evaluate_string                                      680     729     +49

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-28 20:13:33 +01:00
Denys Vlasenko
675d24aeaf ash: add LINENO support 
This patch is a backport from dash of the combination of:
    [SHELL] Add preliminary LINENO support
    [VAR] Fix varinit ordering that broke fc
    [SHELL] Improve LINENO support

function                                             old     new   delta
parse_command                                       1604    1677     +73
calcsize                                             156     223     +67
copynode                                             196     258     +62
evalcommand                                         1546    1606     +60
ash_main                                            1046    1103     +57
lookupvar                                             51     106     +55
evalcase                                             269     317     +48
evaltree                                             501     547     +46
evalfor                                              156     200     +44
evalsubshell                                         156     195     +39
raise_error_syntax                                    11      29     +18
varinit_data                                         120     132     +12
evalfun                                              270     280     +10
funcline                                               -       4      +4
cmdtxt                                               569     572      +3
trapcmd                                              306     304      -2
ash_vmsg                                             153     150      -3
startlinno                                             4       -      -4
funcnest                                               4       -      -4
xxreadtoken                                          263     250     -13
readtoken1                                          2645    2602     -43
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 14/4 up/down: 598/-69)          Total: 529 bytes
   text	   data	    bss	    dec	    hex	filename
 932834	    481	   6864	 940179	  e5893	busybox_old
 933375	    481	   6856	 940712	  e5aa8	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-27 22:02:05 +01:00
Denys Vlasenko
54c2111781 hush: add HUSH_BASH_SOURCE_CURDIR config option, to be on par with ash 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-27 20:46:45 +01:00
Denys Vlasenko
f7e0feaf97 hush: fix dot builtin to not search current directory 
function                                             old     new   delta
builtin_source                                       182     209     +27

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-27 19:05:59 +01:00
Denys Vlasenko
bb373dbc32 tar: accomodate non-terminated tar.chksum fields as seen from github.com 
function                                             old     new   delta
get_header_tar                                      1783    1696     -87

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-27 19:04:08 +01:00
Denys Vlasenko
01f7b9e182 ash: introduce a config option to search current directory for sourced files 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-26 15:15:43 +01:00
Denys Vlasenko
e503962981 gzip: fix debug code. Closes 10681 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-26 00:21:25 +01:00
Nicholas Clark
77a6678c42 dd: add 'fullblock' iflag 
Adds a fullblock iflag for improved compatibility with GNU dd.
The new iflag can be used to ensure that dd calls retrieve the
expected amount of data when reading from pipes or unusual
filesystems.

function                                             old     new   delta
packed_usage                                       32249   32334     +85
dd_main                                             1582    1632     +50
static.iflag_words                                    12      22     +10
------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 145/0)             Total: 145 bytes

Signed-off-by: Nicholas Clark <nicholas.clark@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-25 19:00:19 +01:00
Denys Vlasenko
043be55691 ash testsuite: add two hush tests from last commit 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-01-25 14:09:06 +01:00