mirror of
https://github.com/vincentmli/bpfire.git
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151 lines
4.4 KiB
Diff
151 lines
4.4 KiB
Diff
From 4a531bb0b3b582cb693de9f76d2d97d970f9a5d5 Mon Sep 17 00:00:00 2001
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From: H.J. Lu <hongjiu.lu@intel.com>
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Date: Fri, 24 Dec 2010 20:14:37 -0500
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Subject: [PATCH] Remove `.ctors' and `.dtors' output sections
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---
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config.h.in | 3 +
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configure.in | 2 +
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elf/sofini.c | 2 +
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elf/soinit.c | 2 +
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sysdeps/i386/init-first.c | 2 +
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sysdeps/mach/hurd/i386/init-first.c | 2 +-
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sysdeps/mach/hurd/powerpc/init-first.c | 2 +-
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sysdeps/sh/init-first.c | 2 +
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sysdeps/unix/sysv/linux/init-first.c | 2 +-
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9 files changed, 16 insertions(+), 3 deletions(-)
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diff --git a/config.h.in b/config.h.in
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index 18bf01a..9e797eb 100644
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--- a/config.h.in
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+++ b/config.h.in
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@@ -201,6 +201,9 @@
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/* Define if multi-arch DSOs should be generated. */
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#undef USE_MULTIARCH
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+/* Define if `.ctors' and `.dtors' sections shouldn't be used. */
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+#undef NO_CTORS_DTORS_SECTIONS
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+
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/*
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*/
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diff --git a/configure.in b/configure.in
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index d8cd5f1..ad25b9b 100644
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--- a/configure.in
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+++ b/configure.in
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@@ -1497,6 +1497,8 @@ EOF
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rm -f conftest*])
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if test $libc_cv_initfini_array != yes; then
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AC_MSG_ERROR([Need linker with .init_array/.fini_array support.])
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+ elif AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep SORT_BY_INIT_PRIORITY 1>&AS_MESSAGE_LOG_FD]); then
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+ AC_DEFINE(NO_CTORS_DTORS_SECTIONS)
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fi
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AC_CACHE_CHECK(for libunwind-support in compiler,
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diff --git a/elf/sofini.c b/elf/sofini.c
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index 5e06f0c..13e74b7 100644
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--- a/elf/sofini.c
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+++ b/elf/sofini.c
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@@ -1,12 +1,14 @@
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/* Finalizer module for ELF shared C library. This provides terminating
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null pointer words in the `.ctors' and `.dtors' sections. */
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+#ifndef NO_CTORS_DTORS_SECTIONS
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static void (*const __CTOR_END__[1]) (void)
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__attribute__ ((used, section (".ctors")))
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= { 0 };
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static void (*const __DTOR_END__[1]) (void)
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__attribute__ ((used, section (".dtors")))
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= { 0 };
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+#endif
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/* Terminate the frame unwind info section with a 4byte 0 as a sentinel;
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this would be the 'length' field in a real FDE. */
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diff --git a/elf/soinit.c b/elf/soinit.c
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index 6fecbb5..1db676a 100644
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--- a/elf/soinit.c
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+++ b/elf/soinit.c
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@@ -3,6 +3,7 @@
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the `.ctors' and `.dtors' sections so the lists are terminated, and
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calling those lists of functions. */
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+#ifndef NO_CTORS_DTORS_SECTIONS
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#include <libc-internal.h>
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#include <stdlib.h>
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@@ -40,3 +41,4 @@ __libc_fini (void)
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void (*_fini_ptr) (void) __attribute__ ((section (".fini_array")))
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= &__libc_fini;
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+#endif
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diff --git a/sysdeps/i386/init-first.c b/sysdeps/i386/init-first.c
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index c6355a8..2af042f 100644
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--- a/sysdeps/i386/init-first.c
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+++ b/sysdeps/i386/init-first.c
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@@ -59,7 +59,9 @@ _init (int argc, ...)
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{
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init (&argc);
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+#ifndef NO_CTORS_DTORS_SECTIONS
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__libc_global_ctors ();
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+#endif
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}
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#endif
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diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c
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index f9a7a58..60823bd 100644
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--- a/sysdeps/mach/hurd/i386/init-first.c
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+++ b/sysdeps/mach/hurd/i386/init-first.c
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@@ -92,7 +92,7 @@ posixland_init (int argc, char **argv, char **envp)
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__getopt_clean_environment (envp);
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#endif
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-#ifdef SHARED
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+#if defined SHARED && !defined NO_CTORS_DTORS_SECTIONS
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__libc_global_ctors ();
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#endif
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}
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diff --git a/sysdeps/mach/hurd/powerpc/init-first.c b/sysdeps/mach/hurd/powerpc/init-first.c
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index 20fa1d4..21b5054 100644
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--- a/sysdeps/mach/hurd/powerpc/init-first.c
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+++ b/sysdeps/mach/hurd/powerpc/init-first.c
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@@ -82,7 +82,7 @@ posixland_init (int argc, char **argv, char **envp)
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__getopt_clean_environment (__environ);
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#endif
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-#ifdef SHARED
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+#if defined SHARED && !defined NO_CTORS_DTORS_SECTIONS
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__libc_global_ctors ();
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#endif
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}
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diff --git a/sysdeps/sh/init-first.c b/sysdeps/sh/init-first.c
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index d816625..1f3a821 100644
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--- a/sysdeps/sh/init-first.c
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+++ b/sysdeps/sh/init-first.c
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@@ -59,7 +59,9 @@ _init (int argc, ...)
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{
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init (&argc);
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+#ifndef NO_CTORS_DTORS_SECTIONS
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__libc_global_ctors ();
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+#endif
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}
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#endif
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diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c
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index 7b2333d..a60212f 100644
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--- a/sysdeps/unix/sysv/linux/init-first.c
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+++ b/sysdeps/unix/sysv/linux/init-first.c
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@@ -93,7 +93,7 @@ _init (int argc, char **argv, char **envp)
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__getopt_clean_environment (envp);
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#endif
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-#ifdef SHARED
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+#if defined SHARED && !defined NO_CTORS_DTORS_SECTIONS
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__libc_global_ctors ();
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#endif
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}
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--
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1.7.3.4
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