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authorH.J. Lu <hjl.tools@gmail.com>2018-06-08 10:28:38 -0700
committerH.J. Lu <hjl.tools@gmail.com>2018-06-08 10:28:52 -0700
commit67c0579669ba1fc265d770252fab31babf887329 (patch)
tree34059924ead164f11bc21fd73ccab758153bd9f7 /sysdeps/sh/crti.S
parent1c09524e4db3efd797ebcfcd8241bdb78f0b06f0 (diff)
downloadglibc-67c0579669ba1fc265d770252fab31babf887329.tar.gz
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Mark _init and _fini as hidden [BZ #23145]
_init and _fini are special functions provided by glibc for linker to
define DT_INIT and DT_FINI in executable and shared library.  They
should never be put in dynamic symbol table.  This patch marks them as
hidden to remove them from dynamic symbol table.

Tested with build-many-glibcs.py.

	[BZ #23145]
	* elf/Makefile (tests-special): Add $(objpfx)check-initfini.out.
	($(all-built-dso:=.dynsym): New target.
	(common-generated): Add $(all-built-dso:$(common-objpfx)%=%.dynsym).
	($(objpfx)check-initfini.out): New target.
	(generated): Add check-initfini.out.
	* scripts/check-initfini.awk: New file.
	* sysdeps/aarch64/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/alpha/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/arm/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/hppa/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/i386/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/ia64/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/m68k/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/microblaze/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/mips/mips32/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/mips/mips64/n32/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/mips/mips64/n64/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/nios2/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/powerpc/powerpc32/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/powerpc/powerpc64/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/s390/s390-32/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/s390/s390-64/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/sh/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/sparc/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
	* sysdeps/x86_64/crti.S (_init): Mark as hidden.
	(_fini): Likewise.
Diffstat (limited to 'sysdeps/sh/crti.S')
-rw-r--r--sysdeps/sh/crti.S2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/sh/crti.S b/sysdeps/sh/crti.S
index 48f04a48b6..c0707406f5 100644
--- a/sysdeps/sh/crti.S
+++ b/sysdeps/sh/crti.S
@@ -58,6 +58,7 @@
 	.section	.init,"ax",@progbits
 	.align 5
 	.global	_init
+	.hidden	_init
 	.type	_init, @function
 _init:
 	mov.l	r12,@-r15
@@ -103,6 +104,7 @@ _init:
 	.section	.fini,"ax",@progbits
 	.align 5
 	.global	_fini
+	.hidden	_fini
 	.type	_fini, @function
 _fini:
 	mov.l	r12,@-r15