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75 Commits

Author SHA1 Message Date
Denys Vlasenko
53b2fdcdba *: add NOINLINEs where code noticeably shrinks 
function                                             old     new   delta
display                                               85    1463   +1378  -73 bytes
select_and_cluster                                     -    1088   +1088 -139 bytes
parse_reply                                            -     979    +979 -109 bytes
zbc_num_sqrt                                           -     632    +632 -191 bytes
show_bridge_port                                       -     585    +585  -56 bytes
sp_256_proj_point_add_8                                -     576    +576  -45 bytes
encode_then_append_var_plusminus                       -     554    +554 -118 bytes
read_mode_db                                           -     537    +537  -47 bytes
fbset_main                                          1331     747    -584
sp_256_ecc_mulmod_8                                 1157     536    -621
brctl_main                                          2189    1548    -641
expand_one_var                                      2544    1872    -672
zxc_vm_process                                      6412    5589    -823
send_queries                                        1813     725   -1088
recv_and_process_peer_pkt                           2245    1018   -1227
bb_dump_dump                                        1531      80   -1451
------------------------------------------------------------------------------
(add/remove: 7/0 grow/shrink: 1/8 up/down: 6329/-7107)       Total: -778 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-10 13:50:53 +02:00
Denys Vlasenko
2c436679fb xxd: implement -i "C style output" 
function                                             old     new   delta
xxd_main                                             710     888    +178
.rodata                                           103252  103331     +79
print_C_style                                          -      78     +78
packed_usage                                       33639   33652     +13
next                                                 276     278      +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 350/0)             Total: 350 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-06-18 00:59:17 +02:00
Denys Vlasenko
25fe2d50bd xxd: do not try reading from closed stdin when non-existent file is given 
Was:
	xxd: FILE: No such file or directory
	xxd: FILE: Bad file descriptor

function                                             old     new   delta
next                                                 276     278      +2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-06-18 00:32:29 +02:00
Denys Vlasenko
4d16161797 xxd: implement -o DISPLAYOFFSET 
function                                             old     new   delta
xxd_main                                             680     710     +30
xstrtoll                                               -      30     +30
bb_dump_dump                                        1511    1531     +20
rewrite                                              941     951     +10
packed_usage                                       33629   33639     +10
.rodata                                           103250  103252      +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/0 up/down: 102/0)             Total: 102 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-06-17 23:53:30 +02:00
Denys Vlasenko
a0f8076d19 hexdump: fix error message 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-06-17 23:23:26 +02:00
Ron Yorston
cad3fc743a libbb: introduce and use fputs_stdout 
function                                             old     new   delta
fputs_stdout                                           -      12     +12
zxc_vm_process                                      7237    7230      -7
yes_main                                              85      78      -7
write_block                                          380     373      -7
wrapf                                                305     298      -7
strings_main                                         437     430      -7
show_bridge                                          353     346      -7
rev_main                                             384     377      -7
put_prompt_custom                                     58      51      -7
put_cur_glyph_and_inc_cursor                         168     161      -7
print_numbered_lines                                 152     145      -7
print_named_ascii                                    130     123      -7
print_name                                           135     128      -7
print_login_issue                                    386     379      -7
print_ascii                                          208     201      -7
powertop_main                                       1249    1242      -7
od_main                                             1789    1782      -7
logread_main                                         518     511      -7
head_main                                            804     797      -7
display_process_list                                1319    1312      -7
cut_main                                            1002     995      -7
bb_dump_dump                                        1550    1543      -7
bb_ask_noecho                                        393     386      -7
baseNUM_main                                         702     695      -7
expand_main                                          755     745     -10
dumpleases_main                                      497     487     -10
write1                                                12       -     -12
putcsi                                                37      23     -14
print_login_prompt                                    55      41     -14
paste_main                                           525     511     -14
cat_main                                             440     426     -14
print_it                                             245     230     -15
print_addrinfo                                      1188    1171     -17
print_rule                                           770     750     -20
print_linkinfo                                       842     822     -20
httpd_main                                           791     771     -20
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/34 up/down: 12/-341)         Total: -329 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-02-03 20:52:40 +01:00
Denys Vlasenko
112453acf2 od: unbreak it 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-25 23:44:22 +01:00
Denys Vlasenko
079487b487 hexdump: fix dup block comparison 
function                                             old     new   delta
bb_dump_dump                                        1523    1520      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-20 19:29:32 +02:00
Denys Vlasenko
dac5b83142 xxd: fix printing of trailing spaces 
function                                             old     new   delta
bb_dump_dump                                        1497    1523     +26
xxd_main                                             459     466      +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 33/0)               Total: 33 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-20 18:57:02 +02:00
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
e5d5f5b9a7 hexdump: fix short file of zero butes treated as dup 
function                                             old     new   delta
bb_dump_dump                                        1466    1491     +25

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-07-03 16:29:06 +02:00
Denys Vlasenko
2ab994f707 placate gcc-8.0.1 warnings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-04-06 18:26:33 +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
95f7953f2c do not use `a' quoting style in comments 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-02 14:26:33 +02:00
Denys Vlasenko
90678f0cd7 xxd: allow "-" as file name meaning stdin 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 16:29:30 +02:00
Denys Vlasenko
63214a68f1 libbb/dump: allow skipping over stdin too 
function                                             old     new   delta
next                                                 294     265     -29

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 16:18:16 +02:00
Denys Vlasenko
5f7904b6d1 libbb/dump: fix a few broken commits and shrink code 
function                                             old     new   delta
next                                                 310     294     -16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-14 16:03:43 +02:00
Denys Vlasenko
cb8e84e65a libbb: shrink sump.c 
function                                             old     new   delta
dot_flags_width_chars                                  -      16     +16
int_convs                                              -       7      +7
lcc                                                    7       -      -7
index_str                                             16       -     -16
rewrite                                             1013     937     -76
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 0/1 up/down: 23/-99)            Total: -76 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-25 16:21:00 +01:00
Denys Vlasenko
0f4364775f xxd: new applet 
Yet Another Hexdumper

function                                             old     new   delta
xxd_main                                               -     364    +364
packed_usage                                       31046   31116     +70
applet_names                                        2560    2564      +4
applet_main                                         1476    1480      +4
rewrite                                             1022    1013      -9
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/1 up/down: 442/-9)            Total: 433 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-25 01:58:00 +01:00
Denys Vlasenko
d3d7f085eb hexdump: fix numerous bugs in handling of backslashes 
Was:
	t=48\\	t=45\\	t=4c\\	t=4c\\	t=4f\\	t=0a\\
Now:
	=48=\n	=45=\n	=4c=\n	=4c=\n	=4f=\n	=0a=\n

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-08-26 20:14:31 +02:00
Denys Vlasenko
ef6747e290 hexdump: don't unconditionally limit the usable address range 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-03-27 15:15:33 +01:00
Denys Vlasenko
a0bef7cc27 hexdump: fix hexdump -n1 -ve '8/2 ""' SEGV. Closes 4478 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-18 02:47:35 +01:00
Denys Vlasenko
60a9414cad fix "variable 'foo' set but not used" warnings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-05-13 20:57:01 +02:00
Denys Vlasenko
e4dcba1c10 *: whitespace fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-28 18:57:19 +02:00
Denys Vlasenko
8d3e225a2d libbb: add xfstat function 
function                                             old     new   delta
xfstat                                                 -      25     +25
mkfs_ext2_main                                      2421    2423      +2
mkfs_reiser_main                                    1197    1194      -3
next                                                 312     307      -5
ar_main                                              533     522     -11
mkfs_minix_main                                     2938    2924     -14
mkfs_vfat_main                                      1511    1495     -16
writeTarFile                                         272     255     -17
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 27/-66)            Total: -39 bytes

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-08-31 12:42:06 +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
Denys Vlasenko
6aca76d4d7 hexdump: fix "hexdump nonexistent_file" handling 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-02-06 13:53:21 +01:00
Denys Vlasenko
8684cbb5cc libbb: robustify isXXXX(). +39 bytes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-11-18 11:34:43 +01:00
Denys Vlasenko
a7bb3c1396 *: code shrink via NOINLINE 
function                                             old     new   delta
expand_vars_to_list                                    -    2118   +2118
lzo1x_optimize                                         -    1429   +1429
run_pipe                                             358    1775   +1417
arith_apply                                            -    1335   +1335
mainQSort3                                             -    1198   +1198
logdir_open                                            -    1163   +1163
rewrite                                                -    1039   +1039
dump_identity                                          -     987    +987
do_shm                                                 -     884    +884
cpio_o                                                 -     863    +863
cpio_main                                           1450     560    -890
ipcs_main                                           3442    2523    -919
bb_dump_dump                                        2611    1488   -1123
process_dev                                         4572    3405   -1167
logdirs_reopen                                      1308      86   -1222
arith                                               2084     707   -1377
mainSort                                            2622    1202   -1420
do_lzo_compress                                     2276     799   -1477
run_list                                            2491     943   -1548
expand_variables                                    2280     135   -2145
------------------------------------------------------------------------------
(add/remove: 9/0 grow/shrink: 1/10 up/down: 12433/-13288)    Total: -855 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-10-08 12:28:08 +02:00
Denis Vlasenko
3eb4466bf8 libbb: replace some memmove's with memcpy's (Ron (ron AT debian.org)) 
bb_dump_dump                                        2674    2611     -63
 2008-11-16 22:21:23 +00:00
Denis Vlasenko
15f2fdb2b9 hexdump: fix SEGV in hexdump -e "" 2008-08-23 23:15:48 +00:00
Denis Vlasenko
2f86d13dff libbb: dump: do not use uninitialized memory. close bug 4364. 2008-07-29 00:00:14 +00:00
Denis Vlasenko
55f7912dda libbb: get rid of statics in dump.c; code shrinks a lot too 
function                                             old     new   delta
alloc_dumper                                           -      26     +26
hexdump_main                                         600     601      +1
static.done                                            1       -      -1
static.ateof                                           1       -      -1
bb_dump_vflag                                          1       -      -1
static.savp                                            4       -      -4
static.nextfs                                          4       -      -4
static.curp                                            4       -      -4
exitval                                                4       -      -4
endfu                                                  4       -      -4
bb_dump_length                                         4       -      -4
bb_dump_fshead                                         4       -      -4
bb_dump_blocksize                                      4       -      -4
_argv                                                  4       -      -4
bb_dump_add                                          365     358      -7
savaddress                                             8       -      -8
eaddress                                               8       -      -8
bb_dump_skip                                           8       -      -8
address                                                8       -      -8
bb_dump_dump                                        2748    2672     -76
next                                                 538     445     -93
------------------------------------------------------------------------------
(add/remove: 1/16 grow/shrink: 1/3 up/down: 27/-247)         Total: -220 bytes
   text	   data	    bss	    dec	    hex	filename
 789458	    607	   6764	 796829	  c289d	busybox_old
 789309	    601	   6696	 796606	  c27be	busybox_unstripped
 2008-07-16 11:00:16 +00:00
Denis Vlasenko
bd9874db74 od,hexdump: fix bug where xrealloc may move pointer, 
leaving other pointers dangling (bug 4104).
 + many style fixes in libbb/dump.c.
 2008-07-16 07:22:14 +00:00
Denis Vlasenko
deeed59de0 libbb: introduce and use xrealloc_vector 
function                                             old     new   delta
xrealloc_vector_helper                                 -      51     +51
create_list                                           84      99     +15
getopt_main                                          690     695      +5
passwd_main                                         1049    1053      +4
get_cached                                            85      89      +4
msh_main                                            1377    1380      +3
add_match                                             42      41      -1
read_lines                                           720     718      -2
grave                                               1068    1066      -2
fill_match_lines                                     143     141      -2
add_to_dirlist                                        67      65      -2
add_input_file                                        49      47      -2
act                                                  252     250      -2
fsck_main                                           2252    2246      -6
man_main                                             765     757      -8
bb_internal_initgroups                               228     220      -8
cut_main                                            1052    1041     -11
add_edge_to_node                                      55      43     -12
dpkg_main                                           3851    3835     -16
ifupdown_main                                       2202    2178     -24
sort_main                                            838     812     -26
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/15 up/down: 82/-124)          Total: -42 bytes
 2008-07-08 05:14:36 +00:00
Denis Vlasenko
defc1ea340 *: introduce and use FAST_FUNC: regparm on i386, otherwise no-on 
text    data     bss     dec     hex filename
 808035     611    6868  815514   c719a busybox_old
 804472     611    6868  811951   c63af busybox_unstripped
 2008-06-27 02:52:20 +00:00
Denis Vlasenko
d02db89244 clean up TODO file. No real code changes. 2008-03-17 09:05:21 +00:00
Bernhard Reutner-Fischer
a985d306a1 - spelling fixes 2008-02-11 11:44:38 +00:00
Denis Vlasenko
6bef3d1d22 fbset: fix buglet where we were using wrong pointer 
readahead: stop using stdio.h
*: style fixes
 2007-11-06 03:05:54 +00:00
Denis Vlasenko
0c97c9d437 'simple' error message functions by Loic Grenie <loic.grenie@gmail.com>. 
263 bytes saved.
 2007-10-01 11:58:38 +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
990d0f63ee Replace index_in_[sub]str_array with index_in_[sub]strings, 
which scans thru "abc\0def\0123\0\0" type strings. Saves 250 bytes.

   text    data     bss     dec     hex filename
 781266    1328   11844  794438   c1f46 busybox_old
 781010    1328   11844  794182   c1e46 busybox_unstripped
 2007-07-24 15:54:42 +00:00
Denis Vlasenko
931de892cc random shrinkage of statics, -60 bytes saved 2007-06-21 12:43:45 +00:00
Denis Vlasenko
b6aae0f381 preparatory patch for -Wwrite-strings #2 2007-01-29 22:51:25 +00:00
Denis Vlasenko
bf0a201008 style fixes 
last xcalloc replaced by xzalloc
 2006-12-26 10:42:51 +00:00
Denis Vlasenko
0de9375ee6 leftover of e2fsck surgery 2006-12-26 02:51:29 +00:00
Denis Vlasenko
b95636c52f remove casts from xmalloc() 2006-12-19 23:36:04 +00:00
Denis Vlasenko
d9e15f2068 style cleanup: return(a) -> return a, part 2 2006-11-27 16:49:55 +00:00
Denis Vlasenko
079f8afa0a style cleanup: return(a) -> return a, part 1 2006-11-27 16:49:31 +00:00
Denis Vlasenko
d3d004dd35 last nail into error_msg() (de)capitalization 2006-10-27 09:02:31 +00:00