binutils-gdb/ld/testsuite/ld-i386/pr17689b.S

	.text
	.globl	main
	.type	main, @function
main:
	leal	4(%esp), %ecx
	andl	$-16, %esp
	pushl	-4(%ecx)
	pushl	%ebp
	movl	%esp, %ebp
	pushl	%ebx
	pushl	%ecx
	call	__x86.get_pc_thunk.bx
	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
	subl	$12, %esp
	pushl	bar_alias@GOTOFF(%ebx)
	call	foo@PLT
	popl	%eax
	movl	ptr@GOTOFF(%ebx), %eax
	pushl	(%eax)
	call	foo@PLT
	addl	$16, %esp
	leal	-8(%ebp), %esp
	xorl	%eax, %eax
	popl	%ecx
	popl	%ebx
	popl	%ebp
	leal	-4(%ecx), %esp
	ret
	.size	main, .-main
	.globl	ptr
	.section	.data.rel.local,"aw",@progbits
	.align 4
	.type	ptr, @object
	.size	ptr, 4
ptr:
	.long	bar_alias
	.section	.text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
	.globl	__x86.get_pc_thunk.bx
	.hidden	__x86.get_pc_thunk.bx
	.type	__x86.get_pc_thunk.bx, @function
__x86.get_pc_thunk.bx:
	movl	(%esp), %ebx
	ret
	.section	.note.GNU-stack,"",@progbits
i386: Allow copy relocs for building PIE This patch allows copy relocs for R_386_GOTOFF relocations in PIE. For extern int glob_a; int foo () { return glob_a; } compiler now can optimize it from call __x86.get_pc_thunk.ax addl $_GLOBAL_OFFSET_TABLE_, %eax movl glob_a@GOT(%eax), %eax movl (%eax), %eax ret to call __x86.get_pc_thunk.ax addl $_GLOBAL_OFFSET_TABLE_, %eax movl glob_a@GOTOFF(%eax), %eax ret bfd/ PR ld/18289 * elf32-i386.c (elf_i386_link_hash_entry): Add gotoff_ref. (elf_i386_link_hash_newfunc): Initialize gotoff_ref to 0. (elf_i386_create_dynamic_sections): Always allow copy relocs for building executables. (elf_i386_copy_indirect_symbol): Also copy gotoff_ref. (elf_i386_check_relocs): Set gotoff_ref for R_386_GOTOFF. (elf_i386_adjust_dynamic_symbol): Also allocate copy relocs for PIE and R_386_GOTOFF. (elf_i386_relocate_section): Allow R_386_GOTOFF in executable. ld/testsuite/ PR ld/18289 * ld-i386/copyreloc-lib.c: New file. * ld-i386/copyreloc-main.S: Likewise. * ld-i386/copyreloc-main.out: Likewise. * ld-i386/copyreloc-main1.rd: Likewise. * ld-i386/copyreloc-main2.rd: Likewise. * ld-i386/dummy.c: Likewise. * ld-i386/pr17689.out: Likewise. * ld-i386/pr17689.rd: Likewise. * ld-i386/pr17689a.c: Likewise. * ld-i386/pr17689b.S: Likewise. * ld-i386/pr17827.rd: Likewise. * ld-i386/pr17827ver.rd: Likewise. * ld-i386/i386.exp: Run copyreloc tests. 2015-04-22 20:24:54 +08:00			`.text`
			`.globl main`
			`.type main, @function`
			`main:`
			`leal 4(%esp), %ecx`
			`andl $-16, %esp`
			`pushl -4(%ecx)`
			`pushl %ebp`
			`movl %esp, %ebp`
			`pushl %ebx`
			`pushl %ecx`
			`call __x86.get_pc_thunk.bx`
			`addl $_GLOBAL_OFFSET_TABLE_, %ebx`
			`subl $12, %esp`
			`pushl bar_alias@GOTOFF(%ebx)`
			`call foo@PLT`
			`popl %eax`
			`movl ptr@GOTOFF(%ebx), %eax`
			`pushl (%eax)`
			`call foo@PLT`
			`addl $16, %esp`
			`leal -8(%ebp), %esp`
			`xorl %eax, %eax`
			`popl %ecx`
			`popl %ebx`
			`popl %ebp`
			`leal -4(%ecx), %esp`
			`ret`
			`.size main, .-main`
			`.globl ptr`
			`.section .data.rel.local,"aw",@progbits`
			`.align 4`
			`.type ptr, @object`
			`.size ptr, 4`
			`ptr:`
			`.long bar_alias`
			`.section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat`
			`.globl __x86.get_pc_thunk.bx`
			`.hidden __x86.get_pc_thunk.bx`
			`.type __x86.get_pc_thunk.bx, @function`
			`__x86.get_pc_thunk.bx:`
			`movl (%esp), %ebx`
			`ret`
			`.section .note.GNU-stack,"",@progbits`