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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.
53 lines
1.8 KiB
Makefile
53 lines
1.8 KiB
Makefile
#source: ibt-plt-2.s
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#as: --32
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#ld: -shared -m elf_i386 -z ibtplt --hash-style=sysv -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+140 <.plt>:
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+[a-f0-9]+: ff b3 04 00 00 00 pushl 0x4\(%ebx\)
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+[a-f0-9]+: ff a3 08 00 00 00 jmp \*0x8\(%ebx\)
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+[a-f0-9]+: 0f 1f 40 00 nopl 0x0\(%eax\)
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: 68 00 00 00 00 push \$0x0
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+[a-f0-9]+: e9 e2 ff ff ff jmp 140 <.plt>
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+[a-f0-9]+: 66 90 xchg %ax,%ax
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: 68 08 00 00 00 push \$0x8
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+[a-f0-9]+: e9 d2 ff ff ff jmp 140 <.plt>
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+[a-f0-9]+: 66 90 xchg %ax,%ax
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Disassembly of section .plt.sec:
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0+170 <bar1@plt>:
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: ff a3 0c 00 00 00 jmp \*0xc\(%ebx\)
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+[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%eax,%eax,1\)
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0+180 <bar2@plt>:
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: ff a3 10 00 00 00 jmp \*0x10\(%ebx\)
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+[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%eax,%eax,1\)
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Disassembly of section .text:
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0+190 <foo>:
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+[a-f0-9]+: 53 push %ebx
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+[a-f0-9]+: e8 18 00 00 00 call 1ae <__x86.get_pc_thunk.bx>
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+[a-f0-9]+: 81 c3 1a 11 00 00 add \$0x111a,%ebx
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+[a-f0-9]+: 83 ec 08 sub \$0x8,%esp
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+[a-f0-9]+: e8 dc ff ff ff call 180 <bar2@plt>
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+[a-f0-9]+: e8 c7 ff ff ff call 170 <bar1@plt>
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+[a-f0-9]+: 83 c4 08 add \$0x8,%esp
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+[a-f0-9]+: 5b pop %ebx
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+[a-f0-9]+: c3 ret
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0+1ae <__x86.get_pc_thunk.bx>:
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+[a-f0-9]+: 8b 1c 24 mov \(%esp\),%ebx
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+[a-f0-9]+: c3 ret
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#pass
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