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authorH.J. Lu <hjl.tools@gmail.com>2018-02-05 08:38:16 -0800
committerH.J. Lu <hjl.tools@gmail.com>2018-02-05 08:38:16 -0800
commitcd04836359da82ae1dc67e5a05565536f4427b51 (patch)
treefc72f6593a58e26174caadbfe9515204901fb318 /ld/testsuite/ld-x86-64/load1a.d
parentb8df6ca79e69678a07d3216b9b2b552fce27cda8 (diff)
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x86: Remove the unused _GLOBAL_OFFSET_TABLE_
Since _GLOBAL_OFFSET_TABLE_ may be referenced implicitly on x86, checking ref_regular_nonweak leaves the unused _GLOBAL_OFFSET_TABLE_ in output. This patch checks explicit GOT references instead. ld-i386/discarded1.s and ld-x86-64/discarded1.s are updated to avoid linker optimization which removes GOT references. bfd/ PR ld/22782 * elf32-i386.c (elf_i386_check_relocs): Set got_referenced if _GLOBAL_OFFSET_TABLE_ is referenced or GOT is needed to resolve undefined weak symbol to 0. * elf64-x86-64.c (elf_x86_64_check_relocs): Set got_referenced if _GLOBAL_OFFSET_TABLE_ is referenced. * elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Check got_referenced instead of ref_regular_nonweak. Remove the unused _GLOBAL_OFFSET_TABLE_ from symbol table. * elfxx-x86.h (elf_x86_link_hash_table): Add got_referenced. ld/ PR ld/22782 * testsuite/ld-i386/discarded1.s: Replace mov with div. * testsuite/ld-x86-64/discarded1.s: Likewise. * testsuite/ld-i386/i386.exp: Run pr22782. * testsuite/ld-i386/load1-nacl.d: Updated for removing _GLOBAL_OFFSET_TABLE_ from output. * testsuite/ld-i386/load1.d: Likewise. * testsuite/ld-x86-64/load1a-nacl.d: Likewise. * testsuite/ld-x86-64/load1a.d: Likewise. * testsuite/ld-x86-64/load1b-nacl.d: Likewise. * testsuite/ld-x86-64/load1b.d: Likewise. * testsuite/ld-i386/pr22782.d: New file. * testsuite/ld-i386/pr22782.s: Likewise. * testsuite/ld-x86-64/pr22782.s: Likewise. * testsuite/ld-x86-64/pr22782a.d: Likewise. * testsuite/ld-x86-64/pr22782b.d: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run pr22782a and pr22782b.
Diffstat (limited to 'ld/testsuite/ld-x86-64/load1a.d')
-rw-r--r--ld/testsuite/ld-x86-64/load1a.d76
1 files changed, 38 insertions, 38 deletions
diff --git a/ld/testsuite/ld-x86-64/load1a.d b/ld/testsuite/ld-x86-64/load1a.d
index 0eb4880..bbbd204 100644
--- a/ld/testsuite/ld-x86-64/load1a.d
+++ b/ld/testsuite/ld-x86-64/load1a.d
@@ -8,48 +8,48 @@
SYMBOL TABLE:
#...
-0+6001b8 l O .data 0+1 bar
+0+60019e l O .data 0+1 bar
#...
-0+6001b9 g O .data 0+1 foo
+0+60019f g O .data 0+1 foo
#...
Disassembly of section .text:
0+4000b0 <_start>:
-[ ]*[a-f0-9]+: 81 d0 b8 01 60 00 adc \$0x6001b8,%eax
-[ ]*[a-f0-9]+: 81 c3 b8 01 60 00 add \$0x6001b8,%ebx
-[ ]*[a-f0-9]+: 81 e1 b8 01 60 00 and \$0x6001b8,%ecx
-[ ]*[a-f0-9]+: 81 fa b8 01 60 00 cmp \$0x6001b8,%edx
-[ ]*[a-f0-9]+: 81 ce b8 01 60 00 or \$0x6001b8,%esi
-[ ]*[a-f0-9]+: 81 df b8 01 60 00 sbb \$0x6001b8,%edi
-[ ]*[a-f0-9]+: 81 ed b8 01 60 00 sub \$0x6001b8,%ebp
-[ ]*[a-f0-9]+: 41 81 f0 b8 01 60 00 xor \$0x6001b8,%r8d
-[ ]*[a-f0-9]+: 41 f7 c7 b8 01 60 00 test \$0x6001b8,%r15d
-[ ]*[a-f0-9]+: 48 81 d0 b8 01 60 00 adc \$0x6001b8,%rax
-[ ]*[a-f0-9]+: 48 81 c3 b8 01 60 00 add \$0x6001b8,%rbx
-[ ]*[a-f0-9]+: 48 81 e1 b8 01 60 00 and \$0x6001b8,%rcx
-[ ]*[a-f0-9]+: 48 81 fa b8 01 60 00 cmp \$0x6001b8,%rdx
-[ ]*[a-f0-9]+: 48 81 cf b8 01 60 00 or \$0x6001b8,%rdi
-[ ]*[a-f0-9]+: 48 81 de b8 01 60 00 sbb \$0x6001b8,%rsi
-[ ]*[a-f0-9]+: 48 81 ed b8 01 60 00 sub \$0x6001b8,%rbp
-[ ]*[a-f0-9]+: 49 81 f0 b8 01 60 00 xor \$0x6001b8,%r8
-[ ]*[a-f0-9]+: 49 f7 c7 b8 01 60 00 test \$0x6001b8,%r15
-[ ]*[a-f0-9]+: 81 d0 b9 01 60 00 adc \$0x6001b9,%eax
-[ ]*[a-f0-9]+: 81 c3 b9 01 60 00 add \$0x6001b9,%ebx
-[ ]*[a-f0-9]+: 81 e1 b9 01 60 00 and \$0x6001b9,%ecx
-[ ]*[a-f0-9]+: 81 fa b9 01 60 00 cmp \$0x6001b9,%edx
-[ ]*[a-f0-9]+: 81 ce b9 01 60 00 or \$0x6001b9,%esi
-[ ]*[a-f0-9]+: 81 df b9 01 60 00 sbb \$0x6001b9,%edi
-[ ]*[a-f0-9]+: 81 ed b9 01 60 00 sub \$0x6001b9,%ebp
-[ ]*[a-f0-9]+: 41 81 f0 b9 01 60 00 xor \$0x6001b9,%r8d
-[ ]*[a-f0-9]+: 41 f7 c7 b9 01 60 00 test \$0x6001b9,%r15d
-[ ]*[a-f0-9]+: 48 81 d0 b9 01 60 00 adc \$0x6001b9,%rax
-[ ]*[a-f0-9]+: 48 81 c3 b9 01 60 00 add \$0x6001b9,%rbx
-[ ]*[a-f0-9]+: 48 81 e1 b9 01 60 00 and \$0x6001b9,%rcx
-[ ]*[a-f0-9]+: 48 81 fa b9 01 60 00 cmp \$0x6001b9,%rdx
-[ ]*[a-f0-9]+: 48 81 cf b9 01 60 00 or \$0x6001b9,%rdi
-[ ]*[a-f0-9]+: 48 81 de b9 01 60 00 sbb \$0x6001b9,%rsi
-[ ]*[a-f0-9]+: 48 81 ed b9 01 60 00 sub \$0x6001b9,%rbp
-[ ]*[a-f0-9]+: 49 81 f0 b9 01 60 00 xor \$0x6001b9,%r8
-[ ]*[a-f0-9]+: 49 f7 c7 b9 01 60 00 test \$0x6001b9,%r15
+[ ]*[a-f0-9]+: 81 d0 9e 01 60 00 adc \$0x60019e,%eax
+[ ]*[a-f0-9]+: 81 c3 9e 01 60 00 add \$0x60019e,%ebx
+[ ]*[a-f0-9]+: 81 e1 9e 01 60 00 and \$0x60019e,%ecx
+[ ]*[a-f0-9]+: 81 fa 9e 01 60 00 cmp \$0x60019e,%edx
+[ ]*[a-f0-9]+: 81 ce 9e 01 60 00 or \$0x60019e,%esi
+[ ]*[a-f0-9]+: 81 df 9e 01 60 00 sbb \$0x60019e,%edi
+[ ]*[a-f0-9]+: 81 ed 9e 01 60 00 sub \$0x60019e,%ebp
+[ ]*[a-f0-9]+: 41 81 f0 9e 01 60 00 xor \$0x60019e,%r8d
+[ ]*[a-f0-9]+: 41 f7 c7 9e 01 60 00 test \$0x60019e,%r15d
+[ ]*[a-f0-9]+: 48 81 d0 9e 01 60 00 adc \$0x60019e,%rax
+[ ]*[a-f0-9]+: 48 81 c3 9e 01 60 00 add \$0x60019e,%rbx
+[ ]*[a-f0-9]+: 48 81 e1 9e 01 60 00 and \$0x60019e,%rcx
+[ ]*[a-f0-9]+: 48 81 fa 9e 01 60 00 cmp \$0x60019e,%rdx
+[ ]*[a-f0-9]+: 48 81 cf 9e 01 60 00 or \$0x60019e,%rdi
+[ ]*[a-f0-9]+: 48 81 de 9e 01 60 00 sbb \$0x60019e,%rsi
+[ ]*[a-f0-9]+: 48 81 ed 9e 01 60 00 sub \$0x60019e,%rbp
+[ ]*[a-f0-9]+: 49 81 f0 9e 01 60 00 xor \$0x60019e,%r8
+[ ]*[a-f0-9]+: 49 f7 c7 9e 01 60 00 test \$0x60019e,%r15
+[ ]*[a-f0-9]+: 81 d0 9f 01 60 00 adc \$0x60019f,%eax
+[ ]*[a-f0-9]+: 81 c3 9f 01 60 00 add \$0x60019f,%ebx
+[ ]*[a-f0-9]+: 81 e1 9f 01 60 00 and \$0x60019f,%ecx
+[ ]*[a-f0-9]+: 81 fa 9f 01 60 00 cmp \$0x60019f,%edx
+[ ]*[a-f0-9]+: 81 ce 9f 01 60 00 or \$0x60019f,%esi
+[ ]*[a-f0-9]+: 81 df 9f 01 60 00 sbb \$0x60019f,%edi
+[ ]*[a-f0-9]+: 81 ed 9f 01 60 00 sub \$0x60019f,%ebp
+[ ]*[a-f0-9]+: 41 81 f0 9f 01 60 00 xor \$0x60019f,%r8d
+[ ]*[a-f0-9]+: 41 f7 c7 9f 01 60 00 test \$0x60019f,%r15d
+[ ]*[a-f0-9]+: 48 81 d0 9f 01 60 00 adc \$0x60019f,%rax
+[ ]*[a-f0-9]+: 48 81 c3 9f 01 60 00 add \$0x60019f,%rbx
+[ ]*[a-f0-9]+: 48 81 e1 9f 01 60 00 and \$0x60019f,%rcx
+[ ]*[a-f0-9]+: 48 81 fa 9f 01 60 00 cmp \$0x60019f,%rdx
+[ ]*[a-f0-9]+: 48 81 cf 9f 01 60 00 or \$0x60019f,%rdi
+[ ]*[a-f0-9]+: 48 81 de 9f 01 60 00 sbb \$0x60019f,%rsi
+[ ]*[a-f0-9]+: 48 81 ed 9f 01 60 00 sub \$0x60019f,%rbp
+[ ]*[a-f0-9]+: 49 81 f0 9f 01 60 00 xor \$0x60019f,%r8
+[ ]*[a-f0-9]+: 49 f7 c7 9f 01 60 00 test \$0x60019f,%r15
#pass