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Add R_X86_64_RELATIVE64 and handle R_X86_64_64 for x32.

Browse Source 
bfd/

2011-08-12  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/13082
	* elf64-x86-64.c (x86_64_elf_howto_table): Add R_X86_64_RELATIVE64.
	(elf_x86_64_relocate_section): Treat R_X86_64_64 like R_X86_64_32
	and zero-extend it to 64bit if addend is zero for x32.  Generate
	R_X86_64_RELATIVE64 for x32.

include/elf/

2011-08-12  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/13082
	* x86-64.h (R_X86_64_RELATIVE64): New.

ld/testsuite/

2011-08-12  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/13082
	* ld-x86-64/pr13082-1.s: New.
	* ld-x86-64/pr13082-1a.d: Likewise.
	* ld-x86-64/pr13082-1b.d: Likewise.
	* ld-x86-64/pr13082-2.s: Likewise.
	* ld-x86-64/pr13082-2a.d: Likewise.
	* ld-x86-64/pr13082-2b.d: Likewise.
	* ld-x86-64/pr13082-3.s: Likewise.
	* ld-x86-64/pr13082-3a.d: Likewise.
	* ld-x86-64/pr13082-3b.d: Likewise.
	* ld-x86-64/pr13082-4.s: Likewise.
	* ld-x86-64/pr13082-4a.d: Likewise.
	* ld-x86-64/pr13082-4b.d: Likewise.
	* ld-x86-64/pr13082-5.s: Likewise.
	* ld-x86-64/pr13082-5a.d: Likewise.
	* ld-x86-64/pr13082-5b.d: Likewise.
	* ld-x86-64/pr13082-6.s: Likewise.
	* ld-x86-64/pr13082-6a.d: Likewise.
	* ld-x86-64/pr13082-6b.d: Likewise.

	* ld-x86-64/x86-64.exp: Run pr13082-[1-6][ab].
This commit is contained in:
H.J. Lu 2011-08-12 19:42:39 +00:00
parent 091c2a968a
commit 64d25c4414
22 changed files with 252 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
bfd/ChangeLog
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@ -1,3 +1,11 @@
2011-08-12 H.J. Lu <hongjiu.lu@intel.com>
PR ld/13082
* elf64-x86-64.c (x86_64_elf_howto_table): Add R_X86_64_RELATIVE64.
(elf_x86_64_relocate_section): Treat R_X86_64_64 like R_X86_64_32
and zero-extend it to 64bit if addend is zero for x32. Generate
R_X86_64_RELATIVE64 for x32.
2011-08-09 Matthew Gretton-Dann <matthew.gretton-dann@arm.com>
* bfd-in.h (bfd_elf32_arm_set_target_relocs): Update prototype.

21
bfd/elf64-x86-64.c
View File

@ -164,6 +164,9 @@ static reloc_howto_type x86_64_elf_howto_table[] =
HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
MINUS_ONE, FALSE),
HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
MINUS_ONE, FALSE),
/* We have a gap in the reloc numbers here.
R_X86_64_standard counts the number up to this point, and
@ -3083,6 +3086,16 @@ elf_x86_64_relocate_section (bfd *output_bfd,
if (info->relocatable)
continue;
if (rel->r_addend == 0
&& r_type == R_X86_64_64
&& !ABI_64_P (output_bfd))
{
/* For x32, treat R_X86_64_64 like R_X86_64_32 and zero-extend
it to 64bit if addend is zero. */
r_type = R_X86_64_32;
memset (contents + rel->r_offset + 4, 0, 4);
}
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle
it here if it is defined in a non-shared object. */
if (h != NULL
@ -3597,6 +3610,14 @@ elf_x86_64_relocate_section (bfd *output_bfd,
outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
outrel.r_addend = relocation + rel->r_addend;
}
else if (r_type == R_X86_64_64
&& !ABI_64_P (output_bfd))
{
relocate = TRUE;
outrel.r_info = htab->r_info (0,
R_X86_64_RELATIVE64);
outrel.r_addend = relocation + rel->r_addend;
}
else
{
long sindx;

24
ld/testsuite/ChangeLog
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@ -1,3 +1,27 @@
2011-08-12 H.J. Lu <hongjiu.lu@intel.com>
PR ld/13082
* ld-x86-64/pr13082-1.s: New.
* ld-x86-64/pr13082-1a.d: Likewise.
* ld-x86-64/pr13082-1b.d: Likewise.
* ld-x86-64/pr13082-2.s: Likewise.
* ld-x86-64/pr13082-2a.d: Likewise.
* ld-x86-64/pr13082-2b.d: Likewise.
* ld-x86-64/pr13082-3.s: Likewise.
* ld-x86-64/pr13082-3a.d: Likewise.
* ld-x86-64/pr13082-3b.d: Likewise.
* ld-x86-64/pr13082-4.s: Likewise.
* ld-x86-64/pr13082-4a.d: Likewise.
* ld-x86-64/pr13082-4b.d: Likewise.
* ld-x86-64/pr13082-5.s: Likewise.
* ld-x86-64/pr13082-5a.d: Likewise.
* ld-x86-64/pr13082-5b.d: Likewise.
* ld-x86-64/pr13082-6.s: Likewise.
* ld-x86-64/pr13082-6a.d: Likewise.
* ld-x86-64/pr13082-6b.d: Likewise.
* ld-x86-64/x86-64.exp: Run pr13082-[1-6][ab].
2011-08-09 Matthew Gretton-Dann <matthew.gretton-dann@arm.com>
* ld-arm/arm-elf.exp (armelftests): Update for new command-line

10
ld/testsuite/ld-x86-64/pr13082-1.s Normal file
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@ -0,0 +1,10 @@
.text
.globl _start
_start:
lea .Ljmp(%rip), %rax
.L1:
jmp *(%rax)
.section .data.rel.ro.local,"aw",@progbits
.align 8
.Ljmp:
.quad .L1

9
ld/testsuite/ld-x86-64/pr13082-1a.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-1.s
#name: PR ld/13082-1 (a)
#as: --x32
#ld: -shared -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_RELATIVE64 +[0-9a-f]+

9
ld/testsuite/ld-x86-64/pr13082-1b.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-1.s
#name: PR ld/13082-1 (b)
#as: --x32
#ld: -pie -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_RELATIVE64 +[0-9a-f]+

9
ld/testsuite/ld-x86-64/pr13082-2.s Normal file
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@ -0,0 +1,9 @@
.text
.globl _start
_start:
lea .Ljmp(%rip), %rax
jmp *(%rax)
.section .data.rel.ro.local,"aw",@progbits
.align 8
.Ljmp:
.quad _start

9
ld/testsuite/ld-x86-64/pr13082-2a.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-2.s
#name: PR ld/13082-2 (a)
#as: --x32
#ld: -shared -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_32 +[0-9a-f]+ +_start \+ 0

9
ld/testsuite/ld-x86-64/pr13082-2b.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-2.s
#name: PR ld/13082-2 (b)
#as: --x32
#ld: -pie -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_RELATIVE +[0-9a-f]+

10
ld/testsuite/ld-x86-64/pr13082-3.s Normal file
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@ -0,0 +1,10 @@
.text
.globl _start
_start:
lea .Ljmp(%rip), %rax
jmp *(%rax)
.section .data.rel.ro.local,"aw",@progbits
.weak func
.align 8
.Ljmp:
.quad func

9
ld/testsuite/ld-x86-64/pr13082-3a.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-3.s
#name: PR ld/13082-3 (a)
#as: --x32
#ld: -shared -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_32 +[0-9a-f]+ +func \+ 0

9
ld/testsuite/ld-x86-64/pr13082-3b.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-3.s
#name: PR ld/13082-3 (b)
#as: --x32
#ld: -pie -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_32 +[0-9a-f]+ +func \+ 0

10
ld/testsuite/ld-x86-64/pr13082-4.s Normal file
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@ -0,0 +1,10 @@
.text
.globl _start
_start:
lea .Ljmp(%rip), %rax
jmp *(%rax)
.section .data.rel.ro.local,"aw",@progbits
.weak func
.align 8
.Ljmp:
.quad func + 1

9
ld/testsuite/ld-x86-64/pr13082-4a.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-4.s
#name: PR ld/13082-4 (a)
#as: --x32
#ld: -shared -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_64 +[0-9a-f]+ +func \+ 1

9
ld/testsuite/ld-x86-64/pr13082-4b.d Normal file
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@ -0,0 +1,9 @@
#source: pr13082-4.s
#name: PR ld/13082-4 (b)
#as: --x32
#ld: -pie -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_64 +[0-9a-f]+ +func \+ 1

12
ld/testsuite/ld-x86-64/pr13082-5.s Normal file
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@ -0,0 +1,12 @@
.text
.globl _start
.globl ifunc
.type ifunc, @gnu_indirect_function
_start:
lea .Ljmp(%rip), %rax
ifunc:
jmp *(%rax)
.section .data.rel.ro.local,"aw",@progbits
.align 8
.Ljmp:
.quad ifunc

14
ld/testsuite/ld-x86-64/pr13082-5a.d Normal file
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@ -0,0 +1,14 @@
#source: pr13082-5.s
#name: PR ld/13082-5 (a)
#as: --x32
#ld: -shared -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 2 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_32 +ifunc\(\)+ +ifunc \+ 0
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_GLOB_DAT +ifunc\(\)+ +ifunc \+ 0
Relocation section '.rela.plt' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_JUMP_SLOT +ifunc\(\)+ +ifunc \+ 0

13
ld/testsuite/ld-x86-64/pr13082-5b.d Normal file
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@ -0,0 +1,13 @@
#source: pr13082-5.s
#name: PR ld/13082-5 (b)
#as: --x32
#ld: -pie -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_IRELATIVE +[0-9a-f]+
Relocation section '.rela.plt' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_IRELATIVE +[0-9a-f]+

11
ld/testsuite/ld-x86-64/pr13082-6.s Normal file
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@ -0,0 +1,11 @@
.text
.globl _start
.type ifunc, @gnu_indirect_function
_start:
lea .Ljmp(%rip), %rax
ifunc:
jmp *(%rax)
.section .data.rel.ro.local,"aw",@progbits
.align 8
.Ljmp:
.quad ifunc

13
ld/testsuite/ld-x86-64/pr13082-6a.d Normal file
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@ -0,0 +1,13 @@
#source: pr13082-6.s
#name: PR ld/13082-6 (a)
#as: --x32
#ld: -shared -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_IRELATIVE +[0-9a-f]+
Relocation section '.rela.plt' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_IRELATIVE +[0-9a-f]+

13
ld/testsuite/ld-x86-64/pr13082-6b.d Normal file
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@ -0,0 +1,13 @@
#source: pr13082-6.s
#name: PR ld/13082-6 (b)
#as: --x32
#ld: -pie -melf32_x86_64
#readelf: -r --wide
Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_IRELATIVE +[0-9a-f]+
Relocation section '.rela.plt' at offset 0x[0-9a-f]+ contains 1 entries:
Offset Info Type Sym. Value Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ +R_X86_64_IRELATIVE +[0-9a-f]+

12
ld/testsuite/ld-x86-64/x86-64.exp
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@ -213,6 +213,18 @@ run_dump_test "ia32-3"
run_dump_test "lp64-1"
run_dump_test "lp64-2"
run_dump_test "lp64-3"
run_dump_test "pr13082-1a"
run_dump_test "pr13082-1b"
run_dump_test "pr13082-2a"
run_dump_test "pr13082-2b"
run_dump_test "pr13082-3a"
run_dump_test "pr13082-3b"
run_dump_test "pr13082-4a"
run_dump_test "pr13082-4b"
run_dump_test "pr13082-5a"
run_dump_test "pr13082-5b"
run_dump_test "pr13082-6a"
run_dump_test "pr13082-6b"
# Must be native with the C compiler
if { [isnative] && [which $CC] != 0 } {