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2019-07-02libbb: reduce the overhead of single parameter bb_error_msg() callsJames Byrne
Back in 2007, commit 0c97c9d43707 ("'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>
2017-10-05whitespace and comment format fixes, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-10-28libbb: shrink base64 decoding a bitDenys Vlasenko
function old new delta bb_uuenc_tbl_base64 67 66 -1 decode_base64 182 161 -21 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-10-28whitespace fixesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-10-28libbb: split decode_base64 off read_base64Leonid Lisovskiy
function old new delta decode_base64 - 182 +182 read_base64 378 255 -123 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/1 up/down: 182/-123) Total: 59 bytes Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-09-16move read_base64 to libbb/uuencode.cDenys Vlasenko
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-08-16*: make GNU licensing statement forms more regularDenys Vlasenko
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>
2008-06-27*: introduce and use FAST_FUNC: regparm on i386, otherwise no-onDenis Vlasenko
text data bss dec hex filename 808035 611 6868 815514 c719a busybox_old 804472 611 6868 811951 c63af busybox_unstripped
2007-08-12trylink: produce even more info about final link stageDenis Vlasenko
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
2007-08-06bb_uudecode: now this is the more thorough fix... I hope...Denis Vlasenko
2007-08-06bb_uuencode: fix obscure case where we were using data past last byte of sourceDenis Vlasenko
(fixes testsuite failure) bb_uuencode 154 160 +6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/0 up/down: 6/0) Total: 6 bytes text data bss dec hex filename 770284 1096 11228 782608 bf110 busybox_old 770288 1096 11228 782612 bf114 busybox_unstripped
2007-06-26uuencode: shrinkDenis Vlasenko
function old new delta uuencode_main 427 337 -90 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-90) Total: -90 bytes text data bss dec hex filename 734981 3028 14400 752409 b7b19 busybox_old 734889 3028 14400 752317 b7abd busybox_unstripped
2007-06-12uudecode: nuke duplicate base64_table[]. saves 65 bytesDenis Vlasenko
2006-09-03uuencode: common implementation for wget and uuencode (closing bug 694)Denis Vlasenko