Don't use INTDEF/INTUSE with _dl_init (bug 14132)
diff mbox

Message ID alpine.DEB.2.10.1411042319280.14071@digraph.polyomino.org.uk
State New
Headers show

Commit Message

Joseph Myers Nov. 4, 2014, 11:20 p.m. UTC
Continuing the removal of the obsolete INTDEF / INTUSE mechanism, this
patch eliminates its use for _dl_init.  Since _dl_init was already
declared with hidden visibility, creating a second hidden alias for it
was completely pointless, so this patch replaces all uses of
_dl_init_internal with plain _dl_init instead of using hidden_proto /
hidden_def (which are only needed when you want a hidden alias for a
non-hidden symbol; it's quite possible there are cases where they are
used but don't need to be because the symbol in question is not part
of the public ABI and is only used within a single library, so using
attributes_hidden instead would suffice).

Tested for x86_64 that installed stripped shared libraries are
unchanged by the patch.

2014-11-04  Joseph Myers  <joseph@codesourcery.com>

	[BZ #14132]
	* elf/dl-init.c (_dl_init): Don't use INTDEF.
	* sysdeps/aarch64/dl-machine.h (RTLD_START): Use _dl_init instead
	of _dl_init_internal.
	* sysdeps/alpha/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/arm/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/hppa/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/i386/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/ia64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/m68k/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/microblaze/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/powerpc/powerpc32/dl-start.S (_start): Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sh/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/tile/dl-start.S (_start): Likewise.
	* sysdeps/x86_64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/x86_64/x32/dl-machine.h (RTLD_START): Likewise.

Comments

Roland McGrath Nov. 4, 2014, 11:25 p.m. UTC | #1
Looks fine to me.

Patch
diff mbox

diff --git a/elf/dl-init.c b/elf/dl-init.c
index 598df3b..e5ade47 100644
--- a/elf/dl-init.c
+++ b/elf/dl-init.c
@@ -130,4 +130,3 @@  _dl_init (struct link_map *main_map, int argc, char **argv, char **env)
   INTUSE(_dl_starting_up) = 0;
 #endif
 }
-INTDEF (_dl_init)
diff --git a/sysdeps/aarch64/dl-machine.h b/sysdeps/aarch64/dl-machine.h
index 6615b8f..6746437 100644
--- a/sysdeps/aarch64/dl-machine.h
+++ b/sysdeps/aarch64/dl-machine.h
@@ -178,7 +178,7 @@  _dl_start_user:							\n\
 	adrp	x16, _rtld_local				\n\
         add	x16, x16, #:lo12:_rtld_local			\n\
         ldr	x0, [x16]					\n\
-	bl	_dl_init_internal				\n\
+	bl	_dl_init					\n\
 	// load the finalizer function				\n\
 	adrp	x0, _dl_fini					\n\
 	add	x0, x0, #:lo12:_dl_fini				\n\
diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h
index 64385ad..b350b9c 100644
--- a/sysdeps/alpha/dl-machine.h
+++ b/sysdeps/alpha/dl-machine.h
@@ -173,7 +173,7 @@  $fixup_stack_ret:						\n\
 	lda	$18, 8($sp)					\n\
 	s8addq	$17, 8, $19					\n\
 	addq	$19, $18, $19					\n\
-	bsr	$26, _dl_init_internal	!samegp			\n\
+	bsr	$26, _dl_init		!samegp			\n\
 	/* Pass our finalizer function to the user in $0. */	\n\
 	ldah	$0, _dl_fini($gp)	!gprelhigh		\n\
 	lda	$0, _dl_fini($0)	!gprellow		\n\
diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h
index 31a9251..33ea2f6 100644
--- a/sysdeps/arm/dl-machine.h
+++ b/sysdeps/arm/dl-machine.h
@@ -170,7 +170,7 @@  _dl_start_user:\n\
 	ldr	r0, .L_LOADED\n\
 	ldr	r0, [sl, r0]\n\
 	@ call _dl_init\n\
-	bl	_dl_init_internal(PLT)\n\
+	bl	_dl_init(PLT)\n\
 	@ load the finalizer function\n\
 	ldr	r0, .L_FINI_PROC\n\
 	add	r0, sl, r0\n\
diff --git a/sysdeps/hppa/dl-machine.h b/sysdeps/hppa/dl-machine.h
index 9c7471e..9a9fe44 100644
--- a/sysdeps/hppa/dl-machine.h
+++ b/sysdeps/hppa/dl-machine.h
@@ -432,7 +432,7 @@  asm (									\
 									\
 	/* envp = argv + argc + 1 */					\
 "	sh2add	%r25,%r24,%r23\n"					\
-"	bl	_dl_init_internal,%r2\n"				\
+"	bl	_dl_init,%r2\n"						\
 "	ldo	4(%r23),%r23\n"	/* delay slot */			\
 									\
 	/* Reload argc, argv to the registers start.S expects.  */	\
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index a3a632c..c10b1e5 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -221,7 +221,7 @@  _dl_start_user:\n\
 	# Clear %ebp, so that even constructors have terminated backchain.\n\
 	xorl %ebp, %ebp\n\
 	# Call the function to run the initializers.\n\
-	call _dl_init_internal@PLT\n\
+	call _dl_init@PLT\n\
 	# Pass our finalizer function to the user in %edx, as per ELF ABI.\n\
 	leal _dl_fini@GOTOFF(%ebx), %edx\n\
 	# Restore %esp _start expects.\n\
diff --git a/sysdeps/ia64/dl-machine.h b/sysdeps/ia64/dl-machine.h
index 7d3be04..39d918a 100644
--- a/sysdeps/ia64/dl-machine.h
+++ b/sysdeps/ia64/dl-machine.h
@@ -271,7 +271,7 @@  elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
 "	}\n"								      \
 "	{ .mmb\n"							      \
 "	  st8 [r2] = r17		/* Load the new _dl_argv. */\n"	      \
-"	  br.call.sptk.many b0 = _dl_init_internal#\n"			      \
+"	  br.call.sptk.many b0 = _dl_init#\n"				      \
 "	  ;;\n"								      \
 "	}\n"								      \
 "	/* Pass our finalizer function to the user,\n"			      \
diff --git a/sysdeps/m68k/dl-machine.h b/sysdeps/m68k/dl-machine.h
index 4e7c7db..cc4bebb 100644
--- a/sysdeps/m68k/dl-machine.h
+++ b/sysdeps/m68k/dl-machine.h
@@ -149,7 +149,7 @@  _dl_start_user:\n\
 	pea 8(%sp)\n\
 	move.l %d1, -(%sp)\n\
 	" PCREL_OP ("move.l", "_rtld_local", "-(%sp)", "%d0", "%pc") "\n\
-	jbsr _dl_init_internal@PLTPC\n\
+	jbsr _dl_init@PLTPC\n\
 	addq.l #8, %sp\n\
 	addq.l #8, %sp\n\
 	| Pass our finalizer function to the user in %a1.\n\
diff --git a/sysdeps/microblaze/dl-machine.h b/sysdeps/microblaze/dl-machine.h
index d230a1b..102c6bb 100644
--- a/sysdeps/microblaze/dl-machine.h
+++ b/sysdeps/microblaze/dl-machine.h
@@ -129,7 +129,7 @@  _dl_start_user:\n\
 	addk  r8,r7,r5\n\
 	addik r8,r8,4\n\
 	lwi   r5,r20,_rtld_local@GOTOFF\n\
-	brlid r15,_dl_init_internal\n\
+	brlid r15,_dl_init\n\
 	nop\n\
 	lwi   r5,r1,24\n\
 	lwi   r3,r1,20\n\
diff --git a/sysdeps/mips/dl-machine.h b/sysdeps/mips/dl-machine.h
index eef0384..5000d2a 100644
--- a/sysdeps/mips/dl-machine.h
+++ b/sysdeps/mips/dl-machine.h
@@ -295,14 +295,14 @@  do {									\
 	sll $7, $5, " STRINGXP (PTRLOG) "\n\
 	" STRINGXP(PTR_ADDU) " $7, $7, $6\n\
 	" STRINGXP(PTR_ADDU) " $7, $7, " STRINGXP (PTRSIZE) " \n\
-	# Make sure the stack pointer is aligned for _dl_init_internal.\n\
+	# Make sure the stack pointer is aligned for _dl_init.\n\
 	and $2, $29, -2 * " STRINGXP(SZREG) "\n\
 	move $8, $29\n\
 	" STRINGXP(PTR_SUBIU) " $29, $2, 32\n\
 	" STRINGXP(PTR_S) " $8, (32 - " STRINGXP(SZREG) ")($29)\n\
 	" STRINGXP(SAVE_GP(16)) "\n\
 	# Call the function to run the initializers.\n\
-	jal _dl_init_internal\n\
+	jal _dl_init\n\
 	# Restore the stack pointer for _start.\n\
 	" STRINGXP(PTR_L)  " $29, (32 - " STRINGXP(SZREG) ")($29)\n\
 	# Pass our finalizer function to the user in $2 as per ELF ABI.\n\
@@ -371,7 +371,7 @@  do {									\
 	sll $7, $5, " STRINGXP (PTRLOG) "\n\
 	addu $7, $6\n\
 	addu $7, " STRINGXP (PTRSIZE) "\n\
-	# Make sure the stack pointer is aligned for _dl_init_internal.\n\
+	# Make sure the stack pointer is aligned for _dl_init.\n\
 	li $2, 2 * " STRINGXP (SZREG) "\n\
 	neg $2, $2\n\
 	move $3, $sp\n\
@@ -381,7 +381,7 @@  do {									\
 	move $sp, $2\n\
 	sw $16, 16($sp)\n\
 	# Call the function to run the initializers.\n\
-	lw $2, %call16(_dl_init_internal)($16)\n\
+	lw $2, %call16(_dl_init)($16)\n\
 	move $25, $2\n\
 	jalr $2\n\
 	# Restore the stack pointer for _start.\n\
diff --git a/sysdeps/powerpc/powerpc32/dl-start.S b/sysdeps/powerpc/powerpc32/dl-start.S
index be8ce44..d54cd70 100644
--- a/sysdeps/powerpc/powerpc32/dl-start.S
+++ b/sysdeps/powerpc/powerpc32/dl-start.S
@@ -63,7 +63,7 @@  _dl_start_user:
 	slwi	r6,r4,2
 	add	r6,r5,r6
 	addi	r6,r6,4
-	bl	_dl_init_internal@local
+	bl	_dl_init@local
 
 /* Now, to conform to the ELF ABI, we have to: */
 /* Pass argc (actually _dl_argc) in r3; */
diff --git a/sysdeps/s390/s390-32/dl-machine.h b/sysdeps/s390/s390-32/dl-machine.h
index 527233b..c56185c 100644
--- a/sysdeps/s390/s390-32/dl-machine.h
+++ b/sysdeps/s390/s390-32/dl-machine.h
@@ -203,7 +203,7 @@  _dl_start_user:\n\
 .Llit:\n\
 .Ladr0: .long _GLOBAL_OFFSET_TABLE_-.Llit\n\
 .Ladr1: .long _dl_start-.Llit\n\
-.Ladr4: .long _dl_init_internal@PLT-.Llit\n\
+.Ladr4: .long _dl_init@PLT-.Llit\n\
 ");
 
 #ifndef RTLD_START_SPECIAL_INIT
diff --git a/sysdeps/s390/s390-64/dl-machine.h b/sysdeps/s390/s390-64/dl-machine.h
index e48d355..463021c 100644
--- a/sysdeps/s390/s390-64/dl-machine.h
+++ b/sysdeps/s390/s390-64/dl-machine.h
@@ -175,7 +175,7 @@  _dl_start_user:\n\
 	lgr   %r5,%r3\n\
 	sllg  %r5,%r5,3\n\
 	la    %r5,176(%r5,%r15)\n\
-	brasl %r14,_dl_init_internal@PLT\n\
+	brasl %r14,_dl_init@PLT\n\
 	# Pass our finalizer function to the user in %r14, as per ELF ABI.\n\
 	lghi  %r14,_dl_fini@GOT\n\
 	lg    %r14,0(%r14,%r12)\n\
diff --git a/sysdeps/sh/dl-machine.h b/sysdeps/sh/dl-machine.h
index 81a417d..daac99d 100644
--- a/sysdeps/sh/dl-machine.h
+++ b/sysdeps/sh/dl-machine.h
@@ -188,7 +188,7 @@  _dl_start_user:\n\
 .L_dl_skip_args:\n\
 	.long _dl_skip_args@GOT\n\
 .L_dl_init:\n\
-	.long _dl_init_internal@PLT\n\
+	.long _dl_init@PLT\n\
 .L_dl_loaded:\n\
 	.long _rtld_local@GOT\n\
 .L_dl_fini:\n\
diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h
index 4b79cd6..a24d572 100644
--- a/sysdeps/sparc/sparc32/dl-machine.h
+++ b/sysdeps/sparc/sparc32/dl-machine.h
@@ -282,7 +282,7 @@  _dl_start_user:\n\
 	add	%o3, 4, %o3\n\
 	mov	%i5, %o1\n\
 	add	%o2, %o3, %o3\n\
-	call	_dl_init_internal\n\
+	call	_dl_init\n\
 	 ld	[%o0], %o0\n\
   /* Pass our finalizer function to the user in %g1.  */\n\
 	" RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) "\n\
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h
index d6d263e..c9ee835 100644
--- a/sysdeps/sparc/sparc64/dl-machine.h
+++ b/sysdeps/sparc/sparc64/dl-machine.h
@@ -333,7 +333,7 @@  elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
 "	add	%o3, 8, %o3\n"						\
 "	mov	%i5, %o1\n"						\
 "	add	%o2, %o3, %o3\n"					\
-"	call	_dl_init_internal\n"					\
+"	call	_dl_init\n"						\
 "	 ldx	[%o0], %o0\n"						\
 "   /* Pass our finalizer function to the user in %g1.  */\n"		\
        RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini)				\
diff --git a/sysdeps/tile/dl-start.S b/sysdeps/tile/dl-start.S
index d13f609..5a8876e 100644
--- a/sysdeps/tile/dl-start.S
+++ b/sysdeps/tile/dl-start.S
@@ -94,7 +94,7 @@  ENTRY (_start)
 	}
 	{
 	 SHL_PTR_ADD r3, r3, r2  /* point r3 at envp */
-	 jal _dl_init_internal
+	 jal _dl_init
 	}
 
 	/* Call user program whose address we saved in r50.
diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index f9ee1f7..8316f13 100644
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -145,7 +145,7 @@  _dl_start_user:\n\
 	movq %rdx, %rsi\n\
 	# Save %rsp value in %r13.\n\
 	movq %rsp, %r13\n\
-	# And align stack for the _dl_init_internal call. \n\
+	# And align stack for the _dl_init call. \n\
 	andq $-16, %rsp\n\
 	# _dl_loaded -> rdi\n\
 	movq _rtld_local(%rip), %rdi\n\
@@ -156,7 +156,7 @@  _dl_start_user:\n\
 	# Clear %rbp to mark outermost frame obviously even for constructors.\n\
 	xorl %ebp, %ebp\n\
 	# Call the function to run the initializers.\n\
-	call _dl_init_internal@PLT\n\
+	call _dl_init@PLT\n\
 	# Pass our finalizer function to the user in %rdx, as per ELF ABI.\n\
 	leaq _dl_fini(%rip), %rdx\n\
 	# And make sure %rsp points to argc stored on the stack.\n\
diff --git a/sysdeps/x86_64/x32/dl-machine.h b/sysdeps/x86_64/x32/dl-machine.h
index 3ee41cf..433435e 100644
--- a/sysdeps/x86_64/x32/dl-machine.h
+++ b/sysdeps/x86_64/x32/dl-machine.h
@@ -62,7 +62,7 @@  _dl_start_user:\n\
 	movl %edx, %esi\n\
 	# Save %rsp value in %r13.\n\
 	movl %esp, %r13d\n\
-	# And align stack for the _dl_init_internal call.\n\
+	# And align stack for the _dl_init call.\n\
 	and $-16, %esp\n\
 	# _dl_loaded -> rdi\n\
 	movl _rtld_local(%rip), %edi\n\
@@ -73,7 +73,7 @@  _dl_start_user:\n\
 	# Clear %rbp to mark outermost frame obviously even for constructors.\n\
 	xorl %ebp, %ebp\n\
 	# Call the function to run the initializers.\n\
-	call _dl_init_internal\n\
+	call _dl_init\n\
 	# Pass our finalizer function to the user in %rdx, as per ELF ABI.\n\
 	lea _dl_fini(%rip), %edx\n\
 	# And make sure %rsp points to argc stored on the stack.\n\