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i386/x32: Align .eh_frame section to 4 bytes

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.eh_frame section covering PLT sections should be aligned to 4 bytes
for i386 and x32.

bfd/

	* elf32-i386.c (elf_i386_check_relocs): Align .eh_frame section
	to 4 bytes.
	* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Align
	.eh_frame section to 4 bytes for x32.
	(elf_x86_64_check_relocs): Likewise.

ld/

	* testsuite/ld-x86-64/pr20830b.d: Updated.
This commit is contained in:
H.J. Lu 2017-01-10 14:18:11 -08:00
parent 59a1e29d9e
commit 52b232b366
5 changed files with 18 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
bfd/ChangeLog
View File

@ -1,3 +1,11 @@
2017-01-10 H.J. Lu <hongjiu.lu@intel.com>
* elf32-i386.c (elf_i386_check_relocs): Align .eh_frame section
to 4 bytes.
* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Align
.eh_frame section to 4 bytes for x32.
(elf_x86_64_check_relocs): Likewise.
2017-01-10 H.J. Lu <hongjiu.lu@intel.com>
PR ld/20830

2
bfd/elf32-i386.c
View File

@ -2395,7 +2395,7 @@ do_size:
if (htab->plt_got_eh_frame == NULL
|| !bfd_set_section_alignment (htab->elf.dynobj,
htab->plt_got_eh_frame,
3))
2))
goto error_return;
}
}

5
bfd/elf64-x86-64.c
View File

@ -1172,7 +1172,8 @@ elf_x86_64_create_dynamic_sections (bfd *dynobj,
htab->plt_eh_frame
= bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
if (htab->plt_eh_frame == NULL
|| !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3))
|| !bfd_set_section_alignment (dynobj, htab->plt_eh_frame,
ABI_64_P (dynobj) ? 3 : 2))
return FALSE;
}
@ -2796,7 +2797,7 @@ do_size:
if (htab->plt_got_eh_frame == NULL
|| !bfd_set_section_alignment (htab->elf.dynobj,
htab->plt_got_eh_frame,
3))
ABI_64_P (htab->elf.dynobj) ? 3 : 2))
goto error_return;
}
}

4
ld/ChangeLog
View File

@ -1,3 +1,7 @@
2017-01-10 H.J. Lu <hongjiu.lu@intel.com>
* testsuite/ld-x86-64/pr20830b.d: Updated.
2017-01-10 H.J. Lu <hongjiu.lu@intel.com>
* emulparams/elf32_x86_64.sh (TINY_READONLY_SECTION): New.

10
ld/testsuite/ld-x86-64/pr20830b.d
View File

@ -26,20 +26,14 @@ Contents of the .eh_frame section:
DW_CFA_nop
DW_CFA_nop
0+2c ZERO terminator
0+30 0000000000000020 00000034 FDE cie=00000000 pc=0000000000000170..0000000000000180
0+2c 0000000000000020 00000030 FDE cie=00000000 pc=0000000000000170..0000000000000180
DW_CFA_def_cfa_offset: 16
DW_CFA_advance_loc: 6 to 0000000000000176
DW_CFA_def_cfa_offset: 24
DW_CFA_advance_loc: 10 to 0000000000000180
DW_CFA_def_cfa_expression \(DW_OP_breg7 \(rsp\): 8; DW_OP_breg16 \(rip\): 0; DW_OP_lit15; DW_OP_and; DW_OP_lit11; DW_OP_ge; DW_OP_lit3; DW_OP_shl; DW_OP_plus\)
0+54 ZERO terminator
0+58 0000000000000010 0000005c FDE cie=00000000 pc=0000000000000180..0000000000000188
0+50 0000000000000010 00000054 FDE cie=00000000 pc=0000000000000180..0000000000000188
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop