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bfb1e8c15a
There is no need to generate .note.gnu.property section with empty X86_FEATURE_1_AND property. This patch adds fixup_gnu_properties to ELF linker backend so that x86 backend can remove it. bfd/ PR ld/23515 * elf-bfd.h (elf_backend_data): Add fixup_gnu_properties. * elf-properties.c (_bfd_elf_link_setup_gnu_properties): Call backend fixup_gnu_properties if it isn't NULL. Discard .note.gnu.property section if all properties have been removed. * elfxx-target.h (elf_backend_fixup_gnu_properties): New. (elfNN_bed): Initialize fixup_gnu_properties. * elfxx-x86.c (_bfd_x86_elf_link_fixup_gnu_properties): New function. * elfxx-x86.h (_bfd_x86_elf_link_fixup_gnu_properties): New prototype. (elf_backend_fixup_gnu_properties): New. ld/ PR ld/23515 * testsuite/ld-i386/ibt-plt-2a.d: Updated. * testsuite/ld-i386/ibt-plt-2b.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2a-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2a.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2b-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2b.d: Likewise.
44 lines
1.6 KiB
Makefile
44 lines
1.6 KiB
Makefile
#source: ibt-plt-2.s
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#as: --64 -defsym __64_bit__=1
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#ld: -shared -m elf_x86_64 -z ibtplt --hash-style=sysv -z max-page-size=0x200000 -z noseparate-code
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#objdump: -dw
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.*: +file format .*
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Disassembly of section .plt:
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0+1f0 <.plt>:
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+[a-f0-9]+: ff 35 ca 01 20 00 pushq 0x2001ca\(%rip\) # 2003c0 <_GLOBAL_OFFSET_TABLE_\+0x8>
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+[a-f0-9]+: f2 ff 25 cb 01 20 00 bnd jmpq \*0x2001cb\(%rip\) # 2003c8 <_GLOBAL_OFFSET_TABLE_\+0x10>
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+[a-f0-9]+: 0f 1f 00 nopl \(%rax\)
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+[a-f0-9]+: f3 0f 1e fa endbr64
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+[a-f0-9]+: 68 00 00 00 00 pushq \$0x0
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+[a-f0-9]+: f2 e9 e1 ff ff ff bnd jmpq 1f0 <.plt>
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+[a-f0-9]+: 90 nop
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+[a-f0-9]+: f3 0f 1e fa endbr64
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+[a-f0-9]+: 68 01 00 00 00 pushq \$0x1
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+[a-f0-9]+: f2 e9 d1 ff ff ff bnd jmpq 1f0 <.plt>
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+[a-f0-9]+: 90 nop
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Disassembly of section .plt.sec:
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0+220 <bar1@plt>:
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+[a-f0-9]+: f3 0f 1e fa endbr64
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+[a-f0-9]+: f2 ff 25 a5 01 20 00 bnd jmpq \*0x2001a5\(%rip\) # 2003d0 <bar1>
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+[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
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0+230 <bar2@plt>:
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+[a-f0-9]+: f3 0f 1e fa endbr64
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+[a-f0-9]+: f2 ff 25 9d 01 20 00 bnd jmpq \*0x20019d\(%rip\) # 2003d8 <bar2>
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+[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
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Disassembly of section .text:
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0+240 <foo>:
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+[a-f0-9]+: 48 83 ec 08 sub \$0x8,%rsp
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+[a-f0-9]+: e8 e7 ff ff ff callq 230 <bar2@plt>
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+[a-f0-9]+: 48 83 c4 08 add \$0x8,%rsp
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+[a-f0-9]+: e9 ce ff ff ff jmpq 220 <bar1@plt>
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#pass
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