busybox.git/libbb/ptr_to_globals.c, branch master

libbb: extend "errno pointer" trick to other than GLIBC

2020-09-30T22:34:44+00:00

Savings on musl:

function                                             old     new   delta
resume_main                                          582     614     +32
lbb_prepare                                            -      20     +20
seq_main                                             432     449     +17
fgetsetversion                                        74      88     +14
...
script_main                                         1207    1180     -27
close_silently                                        28       -     -28
shell_builtin_ulimit                                 655     626     -29
lineedit_read_key                                    280     247     -33
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 25/123 up/down: 182/-882)      Total: -700 bytes
   text	   data	    bss	    dec	    hex	filename
1005858	    551	   5676	1012085	  f7175	busybox_old
1005136	    551	   5680	1011367	  f6ea7	busybox_unstripped

Signed-off-by: Denys Vlasenko

whitespace and comment format fixes, no code changes

2017-10-05T12:40:24+00:00

Signed-off-by: Denys Vlasenko

*: make GNU licensing statement forms more regular

2010-08-16T18:14:46+00:00

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

*: remove remaining instances of ".data" hack

2008-04-22T00:08:27+00:00

fix build with gcc -combine

2008-04-11T11:27:29+00:00

*: add optimization barrier to all "G trick" locations

2008-02-27T18:41:59+00:00

busybox.git/libbb/ptr_to_globals.c, branch master

libbb: extend "errno pointer" trick to other than __GLIBC__

whitespace and comment format fixes, no code changes

*: make GNU licensing statement forms more regular

*: remove remaining instances of ".data" hack

fix build with gcc -combine

*: add optimization barrier to all "G trick" locations

libbb: extend "errno pointer" trick to other than GLIBC