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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.
43 lines
1.3 KiB
Makefile
43 lines
1.3 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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#readelf: -wf -n
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Contents of the .eh_frame section:
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0+ 0000000000000014 00000000 CIE
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Version: 1
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Augmentation: "zR"
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Code alignment factor: 1
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Data alignment factor: -8
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Return address column: 16
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Augmentation data: 1b
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DW_CFA_def_cfa: r7 \(rsp\) ofs 8
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DW_CFA_offset: r16 \(rip\) at cfa-8
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DW_CFA_nop
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DW_CFA_nop
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0+18 0000000000000014 0000001c FDE cie=00000000 pc=0000000000000240..0000000000000252
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DW_CFA_advance_loc: 4 to 0000000000000244
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DW_CFA_def_cfa_offset: 16
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DW_CFA_advance_loc: 9 to 000000000000024d
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DW_CFA_def_cfa_offset: 8
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DW_CFA_nop
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0+30 0000000000000024 00000034 FDE cie=00000000 pc=00000000000001f0..0000000000000220
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DW_CFA_def_cfa_offset: 16
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DW_CFA_advance_loc: 6 to 00000000000001f6
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DW_CFA_def_cfa_offset: 24
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DW_CFA_advance_loc: 10 to 0000000000000200
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DW_CFA_def_cfa_expression \(DW_OP_breg7 \(rsp\): 8; DW_OP_breg16 \(rip\): 0; DW_OP_lit15; DW_OP_and; DW_OP_lit10; DW_OP_ge; DW_OP_lit3; DW_OP_shl; DW_OP_plus\)
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DW_CFA_nop
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DW_CFA_nop
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DW_CFA_nop
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DW_CFA_nop
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0+58 0000000000000010 0000005c FDE cie=00000000 pc=0000000000000220..0000000000000240
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DW_CFA_nop
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DW_CFA_nop
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DW_CFA_nop
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