Commit Graph

102 Commits

Author SHA1 Message Date
Denys Vlasenko
965b795b87 decrease paddign: gcc-9.3.1 slaps 32-byte alignment on arrays willy-nilly
text	   data	    bss	    dec	    hex	filename
1021988	    559	   5052	1027599	  fae0f	busybox_old
1021236	    559	   5052	1026847	  fab1f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2020-11-30 13:03:03 +01:00
James Byrne
6937487be7 libbb: reduce the overhead of single parameter bb_error_msg() calls
Back in 2007, commit 0c97c9d437 ("'simple' error message functions by
Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower
overhead call to bb_perror_msg() when only a string was being printed
with no parameters. This saves space for some CPU architectures because
it avoids the overhead of a call to a variadic function. However there
has never been a simple version of bb_error_msg(), and since 2007 many
new calls to bb_perror_msg() have been added that only take a single
parameter and so could have been using bb_simple_perror_message().

This changeset introduces 'simple' versions of bb_info_msg(),
bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and
bb_herror_msg_and_die(), and replaces all calls that only take a
single parameter, or use something like ("%s", arg), with calls to the
corresponding 'simple' version.

Since it is likely that single parameter calls to the variadic functions
may be accidentally reintroduced in the future a new debugging config
option WARN_SIMPLE_MSG has been introduced. This uses some macro magic
which will cause any such calls to generate a warning, but this is
turned off by default to avoid use of the unpleasant macros in normal
circumstances.

This is a large changeset due to the number of calls that have been
replaced. The only files that contain changes other than simple
substitution of function calls are libbb.h, libbb/herror_msg.c,
libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c,
networking/udhcp/common.h and util-linux/mdev.c additonal macros have
been added for logging so that single parameter and multiple parameter
logging variants exist.

The amount of space saved varies considerably by architecture, and was
found to be as follows (for 'defconfig' using GCC 7.4):

Arm:     -92 bytes
MIPS:    -52 bytes
PPC:   -1836 bytes
x86_64: -938 bytes

Note that for the MIPS architecture only an exception had to be made
disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h)
because it made these files larger on MIPS.

Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-07-02 11:35:03 +02:00
Denys Vlasenko
4a6748662a top: tweak --help
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-02-27 16:45:39 +01:00
Denys Vlasenko
b097a84d62 config: update size information
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-28 03:20:17 +01:00
Denys Vlasenko
a02a4e9830 whitespace and comment format fixes, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-05 15:19:25 +02:00
Denys Vlasenko
ebe6d9d875 whitespace and comment format fixes, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-05 14:40:24 +02:00
Denys Vlasenko
3f5ba0c872 stty: add cmspar, flusho, extproc attributes
function                                             old     new   delta
mode_info                                            688     704     +16
mode_name                                            502     516     +14
wrapf                                                162     157      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 30/-5)              Total: 25 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-09-18 12:17:20 +02:00
Denys Vlasenko
b9be780705 sv,svc: fix NOEXEC fallout
function                                             old     new   delta
svc_main                                             145     162     +17
sv                                                  1280    1297     +17
status                                               139     133      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-6)              Total: 28 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-06 21:23:03 +02:00
Denys Vlasenko
184c738582 stty: fix bb_common_bufsiz1 use in NOEXEC
function                                             old     new   delta
stty_main                                           1211    1221     +10
do_display                                           379     370      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-06 20:55:56 +02:00
Denys Vlasenko
692eeb81a4 stty: make in NOEXEC
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04 20:07:19 +02:00
Denys Vlasenko
72089cf6b4 config: deindent all help texts
Those two spaces after tab have no effect, and always a nuisance when editing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21 09:50:55 +02:00
Denys Vlasenko
4eed2c6c50 Update menuconfig items with approximate applet sizes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18 22:01:24 +02:00
Denys Vlasenko
af3f420116 Convert all coreutils/* applets to "new style" applet definitions
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-23 14:46:56 +01:00
Denys Vlasenko
3e134ebf6a *: slap on a few ALIGN1/2s where appropriate
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"

   text	   data	    bss	    dec	    hex	filename
 829901	   4086	   1904	 835891	  cc133	busybox_before
 829665	   4086	   1904	 835655	  cc047	busybox

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-04-22 18:09:21 +02:00
Denys Vlasenko
e6a2f4cc5a libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for it
The config item is FEATURE_USE_BSS_TAIL. When it is off (default):

function                                             old     new   delta
read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
push                                                  46      44      -2
inetd_main                                          2136    2134      -2
uevent_main                                          421     418      -3
addLines                                              97      92      -5
bb_common_bufsiz1                                   8193    1024   -7169
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181)        Total: -7119 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829901	   4086	   1904	 835891	  cc133	busybox_unstripped

FEATURE_USE_BSS_TAIL=y:

read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
inetd_main                                          2136    2134      -2
bb_common_bufsiz1                                   8193       -   -8193
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195)        Total: -8133 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829911	   4086	    880	 834877	  cbd3d	busybox_unstripped

FIXME: setup_common_bufsiz() calls are missing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-04-21 17:39:11 +02:00
Denys Vlasenko
641caaec3d libbb: factor out code which queries screen width
function                                             old     new   delta
get_terminal_width                                     -      17     +17
stty_main                                           1196    1197      +1
pstree_main                                          321     319      -2
ls_main                                              735     731      -4
watch_main                                           232     225      -7
bb_progress_update                                   714     706      -8
ps_main                                              555     543     -12
run_applet_and_exit                                  708     695     -13
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 18/-46)            Total: -28 byte

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-10-23 01:44:22 +02:00
Bartosz Golaszewski
79c618c411 Refactor catv. Move visible() from stty to libbb.
Fixes the following TODO:

  stty's visible() function and catv's guts are identical. Merge them into
  an appropriate libbb function.

Also makes catv behave exactly like coreutils' cat -v e.g. it'll print 'M-^I'
instead of 'M-   '.

function                                             old     new   delta
visible                                                -      70     +70
do_display                                           431     379     -52
catv_main                                            306     250     -56
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 70/-108)           Total: -38 bytes

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-07-30 06:29:42 +02:00
Denys Vlasenko
ae0cf2a9d7 stty: disable CIBAUD leak check - it is not necessary on Linux
function                                             old     new   delta
stty_main                                           1233    1196     -37

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-05-17 20:08:12 +02:00
Denys Vlasenko
e9581b673c stty: code shrink
function                                             old     new   delta
set_mode                                             759     725     -34

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-05-17 18:06:49 +02:00
Denys Vlasenko
60cb48ca50 whitespace cleanup. no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-01-14 15:57:44 +01:00
Denys Vlasenko
5dd1f472a4 stty: trim too verbose error messages (-40 bytes)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-10-21 19:45:13 +02:00
Denys Vlasenko
66426760be *: remove "Options:" string from help texts
function                                             old     new   delta
packed_usage                                       28706   28623     -83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-06-05 03:58:28 +02:00
Pere Orga
34425389e0 move help text from include/usage.src.h to coreutils/*.c
Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-03-31 14:43:25 +02:00
Denys Vlasenko
e3d4c03852 stty: cosmetic fix to settings table; no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-01-26 11:58:37 +01:00
Denys Vlasenko
e54cfc5477 stty: enable line discipline display and change code if __linix__
function                                             old     new   delta
stty_main                                           1242    1276     +34
do_display                                           419     431     +12
display_speed                                         90      81      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 46/-9)              Total: 37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-01-24 18:30:35 +01:00
Denys Vlasenko
271c0ce379 stty: make swtch and iutf8 visible/settable
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-01-24 16:36:15 +01:00
Denys Vlasenko
e4dcba1c10 *: whitespace fixes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-10-28 18:57:19 +02:00
Denys Vlasenko
0ef64bdb40 *: make GNU licensing statement forms more regular
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16 20:14:46 +02:00
Jeremie Koenig
138ce54c9c stty: sort out preprocessor conditionals
* Move the definitions of missing constants to the top of the file.
* Fix undefined IDX_xxx on missing termios constants.
* FreeBSD has TABDLY, TAB0 and TAB3, but no TAB1 or TAB2
* Omit the definition of set_window_size() if TIOCGWINSZ is not available.

Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-01 03:31:35 +02:00
Denys Vlasenko
98a4c7cf3d *: suppress ~60% of "aliased warnings" on gcc-4.4.1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-02-04 15:00:15 +01:00
Denys Vlasenko
800ff7cc75 stty: code shrink -44 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-12-11 15:00:17 +01:00
Denys Vlasenko
9f5a577a32 stty: fix columns command. closes bug 791.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-12-11 14:17:02 +01:00
Denys Vlasenko
e992bae6f9 *: remove a few more cases of argc usage. -89 bytes.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-11-28 15:18:53 +01:00
Denys Vlasenko
ab19ede655 tidy up O_NONBLOCK usage. use libbb functions in stty.
Added O_RDONLY where improves readability. Note: O_RDONLY == 0,
so it is there even if not specified.

function                                             old     new   delta
stty_main                                           1289    1235     -54

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-11-11 21:05:42 +01:00
Bernhard Reutner-Fischer
a48308701a add and use xopen_nonblocking (-18b)
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-10-27 17:17:34 +01:00
Denys Vlasenko
043b1e5d99 more C standard compat fixes from Dan Fandrich
function                                             old     new   delta
docolon                                              207     204      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-09-06 12:47:55 +02:00
Denys Vlasenko
da49f58524 move libc related stuff out of platform.h
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-07-08 02:58:38 +02:00
Denys Vlasenko
9b1b62adc4 Patches to enable FreeBSD build
platform.h: fix wrong check for endianness, fix lchown
aliasing to chown on uclibc.

Code seems to not be affected in my testing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-07-05 03:34:12 +02:00
Denis Vlasenko
c7cc5a9432 mdev: Rob's #if forest removal
*: remove superfluous conts in "f(type *const param)"
2009-04-19 01:27:20 +00:00
Denis Vlasenko
a60f84ebf0 *: rename ATTRIBUTE_XXX to just XXX. 2008-07-05 09:18:54 +00:00
Denis Vlasenko
7049ff8696 whitespace fixes. no code changes 2008-06-25 09:53:17 +00:00
Denis Vlasenko
77ad97f199 more -Wall warning fixes from Cristian Ionescu-Idbohrn.
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
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/1 up/down: 11/-18)             Total: -7 bytes
2008-05-13 02:27:31 +00:00
Denis Vlasenko
da42bd5bbe stty: fix mishandling of 'control' keywords (Ralf Friedl <Ralf.Friedl@online.de>) 2008-01-27 23:24:31 +00:00
Denis Vlasenko
dd8bbfd084 stty: reorganize data tables - save 0.5k
function                                             old     new   delta
mode_name                                              -     496    +496
control_name                                           -      91     +91
stty_main                                           1235    1255     +20
find_mode                                             45      63     +18
find_control                                          45      63     +18
do_display                                           482     493     +11
wrapf                                                165     166      +1
set_mode                                             761     759      -2
max_col                                                4       -      -4
device_name                                            4       -      -4
control_info                                         153      34    -119
mode_info                                           1700     680   -1020
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 5/3 up/down: 655/-1149)        Total: -494 bytes
   text    data     bss     dec     hex filename
 777037     937    9100  787074   c0282 busybox_old
 776551     929    9100  786580   c0094 busybox_unstripped
2007-11-24 04:32:49 +00:00
Denis Vlasenko
2a587df80a stty: mark variable as static 2007-11-18 11:47:25 +00:00
Denis Vlasenko
2ea8c40e8f stty: incorporate strings into struct instead of keeping pointers there.
static:
   text    data     bss     dec     hex filename
 767535     974    9420  777929   bdec9 busybox_old
 767403     974    9420  777797   bde45 busybox_unstripped

dynamic -fpic:
   text    data     bss     dec     hex filename
 718954   14030   12032  745016   b5e38 busybox_old
 720278   12534   12032  744844   b5d8c busybox_unstripped
2007-10-11 16:02:36 +00:00
Denis Vlasenko
9b49a5ed85 add -fvisibility=hidden to CC flags, mark XXX_main functions
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
2007-10-11 10:05:36 +00:00
Denis Vlasenko
4daad9004d introduce bb_putchar(). saves ~1800 on uclibc (less on glibc). 2007-09-27 10:20:47 +00:00
Denis Vlasenko
6ca409e0e4 trylink: produce even more info about final link stage
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
2007-08-12 20:58:27 +00:00
Denis Vlasenko
f868963c67 multiplier suffixes are short, store them directly in struct suffix_mult
function                                             old     new   delta
xstrtoul_range_sfx                                   226     217      -9
xstrtoull_range_sfx                                  291     280     -11
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-20)             Total: -20 bytes
   text    data     bss     dec     hex filename
 669128    2668   13616  685412   a7564 busybox_old
 669108    2668   13616  685392   a7550 busybox_unstripped
2007-07-27 15:06:25 +00:00