diff options
| author | Philip Guenther <guenther@cvs.openbsd.org> | 2018-12-21 05:45:43 +0000 |
|---|---|---|
| committer | Philip Guenther <guenther@cvs.openbsd.org> | 2018-12-21 05:45:43 +0000 |
| commit | 889f48af5f9aeb6e1669018879d4ec16eecb20fe (patch) | |
| tree | 5d73b49cf7696cc88e063678dd4adcb684908e16 /lib/csu | |
| parent | e55bf67773356778a0c58fad5e0ae358f09df53b (diff) | |
Add support for {preinit,init,fini}_array sections in static binaries
ok kettenis@
Diffstat (limited to 'lib/csu')
| -rw-r--r-- | lib/csu/crt0.c | 22 | ||||
| -rw-r--r-- | lib/csu/crtbegin.c | 12 | ||||
| -rw-r--r-- | lib/csu/extern.h | 2 |
3 files changed, 34 insertions, 2 deletions
diff --git a/lib/csu/crt0.c b/lib/csu/crt0.c index 0e8c7a5f5ee..0ffccaf312c 100644 --- a/lib/csu/crt0.c +++ b/lib/csu/crt0.c @@ -1,4 +1,4 @@ -/* $OpenBSD: crt0.c,v 1.10 2017/01/21 04:14:19 guenther Exp $ */ +/* $OpenBSD: crt0.c,v 1.11 2018/12/21 05:45:42 guenther Exp $ */ /* * Copyright (c) 1995 Christopher G. Demetriou @@ -67,14 +67,34 @@ MD_CRT0_START; #endif #endif +extern __dso_hidden initarray_f __preinit_array_start[], + __preinit_array_end[], __init_array_start[], __init_array_end[]; + +extern char __csu_do_fini_array __dso_hidden; + void ___start(MD_START_ARGS) { + size_t size, i; char ***environp; #ifdef MD_START_SETUP MD_START_SETUP #endif +#ifndef RCRT0 + if (cleanup == NULL) { +#endif + size = __preinit_array_end - __preinit_array_start; + for (i = 0; i < size; i++) + __preinit_array_start[i](argc, argv, envp, NULL); + size = __init_array_end - __init_array_start; + for (i = 0; i < size; i++) + __init_array_start[i](argc, argv, envp, NULL); + __csu_do_fini_array = 1; +#ifndef RCRT0 + } +#endif + environp = _csu_finish(argv, envp, cleanup); #ifdef MCRT0 diff --git a/lib/csu/crtbegin.c b/lib/csu/crtbegin.c index b6f5c7fe373..8290150592b 100644 --- a/lib/csu/crtbegin.c +++ b/lib/csu/crtbegin.c @@ -1,4 +1,4 @@ -/* $OpenBSD: crtbegin.c,v 1.24 2017/02/19 21:39:32 guenther Exp $ */ +/* $OpenBSD: crtbegin.c,v 1.25 2018/12/21 05:45:42 guenther Exp $ */ /* $NetBSD: crtbegin.c,v 1.1 1996/09/12 16:59:03 cgd Exp $ */ /* @@ -145,6 +145,9 @@ __do_init(void) } } +char __csu_do_fini_array __dso_hidden = 0; +extern __dso_hidden init_f __fini_array_start[], __fini_array_end[]; + void __do_fini(void) { @@ -156,6 +159,13 @@ __do_fini(void) * Call global destructors. */ __dtors(); + + if (__csu_do_fini_array) { + size_t i = __fini_array_end - __fini_array_start; + while (i-- > 0) + __fini_array_start[i](); + } + } } diff --git a/lib/csu/extern.h b/lib/csu/extern.h index d2087e0fa4e..5cc17413c8a 100644 --- a/lib/csu/extern.h +++ b/lib/csu/extern.h @@ -17,6 +17,8 @@ void __init(void) __dso_hidden; int main(int argc, char *argv[], char *envp[]); +struct dl_cb; +typedef void (*initarray_f)(int, char **, char **, const struct dl_cb *); typedef void (*init_f)(void); /* |