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authorSzabolcs Nagy <szabolcs.nagy@arm.com>2021-02-11 11:58:20 +0000
committerSzabolcs Nagy <szabolcs.nagy@arm.com>2021-04-15 09:47:59 +0100
commita75a02a696f9f869d77b17b99964823aa8833a8b (patch)
tree1722a7a55de984673490e385fa31d74b6950be1f /sysdeps/i386/dl-tlsdesc.S
parent55c9f3238080e9aba733bc0902779c46cfa16446 (diff)
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i386: Remove lazy tlsdesc relocation related code
Like in commit e75711ebfa976d5468ec292282566a18b07e4d67 for x86_64,
remove unused lazy tlsdesc relocation processing code:

  _dl_tlsdesc_resolve_abs_plus_addend
  _dl_tlsdesc_resolve_rel
  _dl_tlsdesc_resolve_rela
  _dl_tlsdesc_resolve_hold
Diffstat (limited to 'sysdeps/i386/dl-tlsdesc.S')
-rw-r--r--sysdeps/i386/dl-tlsdesc.S156
1 files changed, 0 insertions, 156 deletions
diff --git a/sysdeps/i386/dl-tlsdesc.S b/sysdeps/i386/dl-tlsdesc.S
index e781d973b7..255fe88651 100644
--- a/sysdeps/i386/dl-tlsdesc.S
+++ b/sysdeps/i386/dl-tlsdesc.S
@@ -134,159 +134,3 @@ _dl_tlsdesc_dynamic:
 	cfi_endproc
 	.size	_dl_tlsdesc_dynamic, .-_dl_tlsdesc_dynamic
 #endif /* SHARED */
-
-     /* This function is a wrapper for a lazy resolver for TLS_DESC
-	REL relocations that reference the *ABS* segment in their own
-	link maps.  %ebx points to the caller's GOT.  %eax points to a
-	TLS descriptor, such that 0(%eax) holds the address of the
-	resolver wrapper itself (unless some other thread beat us to
-	it) and 4(%eax) holds the addend in the relocation.
-
-	When the actual resolver returns, it will have adjusted the
-	TLS descriptor such that we can tail-call it for it to return
-	the TP offset of the symbol.  */
-
-	.hidden _dl_tlsdesc_resolve_abs_plus_addend
-	.global	_dl_tlsdesc_resolve_abs_plus_addend
-	.type	_dl_tlsdesc_resolve_abs_plus_addend,@function
-	cfi_startproc
-	.align 16
-_dl_tlsdesc_resolve_abs_plus_addend:
-0:
-	_CET_ENDBR
-	pushl	%eax
-	cfi_adjust_cfa_offset (4)
-	pushl	%ecx
-	cfi_adjust_cfa_offset (4)
-	pushl	%edx
-	cfi_adjust_cfa_offset (4)
-	movl	$1f - 0b, %ecx
-	movl	4(%ebx), %edx
-	call	_dl_tlsdesc_resolve_abs_plus_addend_fixup
-1:
-	popl	%edx
-	cfi_adjust_cfa_offset (-4)
-	popl	%ecx
-	cfi_adjust_cfa_offset (-4)
-	popl	%eax
-	cfi_adjust_cfa_offset (-4)
-	jmp	*(%eax)
-	cfi_endproc
-	.size	_dl_tlsdesc_resolve_abs_plus_addend, .-_dl_tlsdesc_resolve_abs_plus_addend
-
-     /* This function is a wrapper for a lazy resolver for TLS_DESC
-	REL relocations that had zero addends.  %ebx points to the
-	caller's GOT.  %eax points to a TLS descriptor, such that
-	0(%eax) holds the address of the resolver wrapper itself
-	(unless some other thread beat us to it) and 4(%eax) holds a
-	pointer to the relocation.
-
-	When the actual resolver returns, it will have adjusted the
-	TLS descriptor such that we can tail-call it for it to return
-	the TP offset of the symbol.  */
-
-	.hidden _dl_tlsdesc_resolve_rel
-	.global	_dl_tlsdesc_resolve_rel
-	.type	_dl_tlsdesc_resolve_rel,@function
-	cfi_startproc
-	.align 16
-_dl_tlsdesc_resolve_rel:
-0:
-	_CET_ENDBR
-	pushl	%eax
-	cfi_adjust_cfa_offset (4)
-	pushl	%ecx
-	cfi_adjust_cfa_offset (4)
-	pushl	%edx
-	cfi_adjust_cfa_offset (4)
-	movl	$1f - 0b, %ecx
-	movl	4(%ebx), %edx
-	call	_dl_tlsdesc_resolve_rel_fixup
-1:
-	popl	%edx
-	cfi_adjust_cfa_offset (-4)
-	popl	%ecx
-	cfi_adjust_cfa_offset (-4)
-	popl	%eax
-	cfi_adjust_cfa_offset (-4)
-	jmp	*(%eax)
-	cfi_endproc
-	.size	_dl_tlsdesc_resolve_rel, .-_dl_tlsdesc_resolve_rel
-
-     /* This function is a wrapper for a lazy resolver for TLS_DESC
-	RELA relocations.  %ebx points to the caller's GOT.  %eax
-	points to a TLS descriptor, such that 0(%eax) holds the
-	address of the resolver wrapper itself (unless some other
-	thread beat us to it) and 4(%eax) holds a pointer to the
-	relocation.
-
-	When the actual resolver returns, it will have adjusted the
-	TLS descriptor such that we can tail-call it for it to return
-	the TP offset of the symbol.  */
-
-	.hidden _dl_tlsdesc_resolve_rela
-	.global	_dl_tlsdesc_resolve_rela
-	.type	_dl_tlsdesc_resolve_rela,@function
-	cfi_startproc
-	.align 16
-_dl_tlsdesc_resolve_rela:
-0:
-	_CET_ENDBR
-	pushl	%eax
-	cfi_adjust_cfa_offset (4)
-	pushl	%ecx
-	cfi_adjust_cfa_offset (4)
-	pushl	%edx
-	cfi_adjust_cfa_offset (4)
-	movl	$1f - 0b, %ecx
-	movl	4(%ebx), %edx
-	call	_dl_tlsdesc_resolve_rela_fixup
-1:
-	popl	%edx
-	cfi_adjust_cfa_offset (-4)
-	popl	%ecx
-	cfi_adjust_cfa_offset (-4)
-	popl	%eax
-	cfi_adjust_cfa_offset (-4)
-	jmp	*(%eax)
-	cfi_endproc
-	.size	_dl_tlsdesc_resolve_rela, .-_dl_tlsdesc_resolve_rela
-
-     /* This function is a placeholder for lazy resolving of TLS
-	relocations.  Once some thread starts resolving a TLS
-	relocation, it sets up the TLS descriptor to use this
-	resolver, such that other threads that would attempt to
-	resolve it concurrently may skip the call to the original lazy
-	resolver and go straight to a condition wait.
-
-	When the actual resolver returns, it will have adjusted the
-	TLS descriptor such that we can tail-call it for it to return
-	the TP offset of the symbol.  */
-
-	.hidden _dl_tlsdesc_resolve_hold
-	.global	_dl_tlsdesc_resolve_hold
-	.type	_dl_tlsdesc_resolve_hold,@function
-	cfi_startproc
-	.align 16
-_dl_tlsdesc_resolve_hold:
-0:
-	_CET_ENDBR
-	pushl	%eax
-	cfi_adjust_cfa_offset (4)
-	pushl	%ecx
-	cfi_adjust_cfa_offset (4)
-	pushl	%edx
-	cfi_adjust_cfa_offset (4)
-	movl	$1f - 0b, %ecx
-	movl	4(%ebx), %edx
-	call	_dl_tlsdesc_resolve_hold_fixup
-1:
-	popl	%edx
-	cfi_adjust_cfa_offset (-4)
-	popl	%ecx
-	cfi_adjust_cfa_offset (-4)
-	popl	%eax
-	cfi_adjust_cfa_offset (-4)
-	jmp	*(%eax)
-	cfi_endproc
-	.size	_dl_tlsdesc_resolve_hold, .-_dl_tlsdesc_resolve_hold