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Preserve addend for R_386_GOT32 and R_X86_64_GOT32

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We should preserve addend for R_386_GOT32 and R_X86_64_GOT32 as in
"movl $foo@GOT + 4, %eax" and "movq $foo@GOT + 4, %rax".

	PR gas/19600
	* config/tc-i386.c (md_apply_fix): Preserve addend for
	BFD_RELOC_386_GOT32 and BFD_RELOC_X86_64_GOT32.
	* testsuite/gas/i386/addend.d: New file.
	* testsuite/gas/i386/addend.s: Likewise.
	* testsuite/gas/i386/x86-64-addend.d: Likewise.
	* testsuite/gas/i386/x86-64-addend.s: Likewise.
	* testsuite/gas/i386/i386.exp: Run addend and x86-64-addend.
	* testsuite/gas/i386/reloc32.d: Updated.
This commit is contained in:
H.J. Lu 2016-05-20 06:01:28 -07:00
parent 17c6c9d9f3
commit 4e21640f67
8 changed files with 64 additions and 5 deletions
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12
gas/ChangeLog
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@ -1,3 +1,15 @@
2016-05-20 H.J. Lu <hongjiu.lu@intel.com>
PR gas/19600
* config/tc-i386.c (md_apply_fix): Preserve addend for
BFD_RELOC_386_GOT32 and BFD_RELOC_X86_64_GOT32.
* testsuite/gas/i386/addend.d: New file.
* testsuite/gas/i386/addend.s: Likewise.
* testsuite/gas/i386/x86-64-addend.d: Likewise.
* testsuite/gas/i386/x86-64-addend.s: Likewise.
* testsuite/gas/i386/i386.exp: Run addend and x86-64-addend.
* testsuite/gas/i386/reloc32.d: Updated.
2016-05-20 Maciej W. Rozycki <macro@imgtec.com>
* config/tc-mips.c (append_insn): Correct the encoding of a

5
gas/config/tc-i386.c
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@ -9341,11 +9341,6 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
fixP->fx_done = 0;
return;
case BFD_RELOC_386_GOT32:
case BFD_RELOC_X86_64_GOT32:
value = 0; /* Fully resolved at runtime. No addend. */
break;
case BFD_RELOC_VTABLE_INHERIT:
case BFD_RELOC_VTABLE_ENTRY:
fixP->fx_done = 0;

14
gas/testsuite/gas/i386/addend.d Normal file
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@ -0,0 +1,14 @@
#as: -mrelax-relocations=yes
#objdump: -dwr
.*: +file format .*
Disassembly of section .text:
0+ <_start>:
[ ]*[a-f0-9]+: b8 00 00 00 00 mov \$0x0,%eax 1: R_386_GOT32 foo
[ ]*[a-f0-9]+: b8 04 00 00 00 mov \$0x4,%eax 6: R_386_GOT32 foo
[ ]*[a-f0-9]+: b8 00 00 00 00 mov \$0x0,%eax b: R_386_GOT32 foo
[ ]*[a-f0-9]+: b8 04 00 00 00 mov \$0x4,%eax 10: R_386_GOT32 foo
#pass

9
gas/testsuite/gas/i386/addend.s Normal file
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@ -0,0 +1,9 @@
.text
_start:
movl $foo@GOT, %eax
movl $foo@GOT + 4, %eax
.intel_syntax noprefix
mov eax, offset foo@got
mov eax, offset foo@got + 4

4
gas/testsuite/gas/i386/i386.exp
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@ -412,6 +412,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]]
run_dump_test "got"
run_dump_test "got-no-relax"
run_dump_test "addend"
if {![istarget "*-*-nacl*"]} then {
run_dump_test "iamcu-1"
run_dump_test "iamcu-2"
@ -797,6 +799,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
run_dump_test "x86-64-gotpcrel"
run_dump_test "x86-64-gotpcrel-no-relax"
run_dump_test "x86-64-addend"
}
set ASFLAGS "$old_ASFLAGS"

2
gas/testsuite/gas/i386/reloc32.d
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@ -68,4 +68,6 @@ Disassembly of section \.data:
.*[ ]+R_386_PC8[ ]+xtrn
#...
.*[ ]+R_386_GOT32[ ]+xtrn
#...
.*[ ]+R_386_GOT32[ ]+xtrn
#pass

14
gas/testsuite/gas/i386/x86-64-addend.d Normal file
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@ -0,0 +1,14 @@
#as: -mrelax-relocations=yes
#objdump: -dwr
.*: +file format .*
Disassembly of section .text:
0+ <_start>:
[ ]*[a-f0-9]+: 48 c7 c0 00 00 00 00 mov \$0x0,%rax 3: R_X86_64_GOT32 foo
[ ]*[a-f0-9]+: 48 c7 c0 00 00 00 00 mov \$0x0,%rax a: R_X86_64_GOT32 foo\+0x4
[ ]*[a-f0-9]+: 48 c7 c0 00 00 00 00 mov \$0x0,%rax 11: R_X86_64_GOT32 foo
[ ]*[a-f0-9]+: 48 c7 c0 00 00 00 00 mov \$0x0,%rax 18: R_X86_64_GOT32 foo\+0x4
#pass

9
gas/testsuite/gas/i386/x86-64-addend.s Normal file
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@ -0,0 +1,9 @@
.text
_start:
movq $foo@GOT, %rax
movq $foo@GOT + 4, %rax
.intel_syntax noprefix
mov rax, offset foo@got
mov rax, offset foo@got + 4