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8c0546e928
When linking Windows x86-64 relocatable object files to generate x86-64 ELF executable, we need to subtract __ImageBase, aka __executable_start, for R_AMD64_IMAGEBASE relocation: 1. Add link_info to struct output_elf_obj_tdata to store linker info and _bfd_get_link_info() to retrieve it. 2. Add ldelf_set_output_arch to set up link_info. 3. Add pex64_link_add_symbols to create an indirect reference to __executable_start for __ImageBase to support R_AMD64_IMAGEBASE relocation when adding symbols from Windows x86-64 relocatable object files to generate x86-64 ELF executable. 4. Also subtract __ImageBase for R_AMD64_IMAGEBASE when generating x86-64 ELF executable. bfd/ PR ld/27425 PR ld/27432 * bfd.c (_bfd_get_link_info): New function. * elf-bfd.h (output_elf_obj_tdata): Add link_info. (elf_link_info): New. * libbfd-in.h (_bfd_get_link_info): New prototype. * coff-x86_64.c (coff_amd64_reloc): Also subtract __ImageBase for R_AMD64_IMAGEBASE when generating x86-64 ELF executable. * pe-x86_64.c: Include "coff/internal.h" and "libcoff.h". (pex64_link_add_symbols): New function. (coff_bfd_link_add_symbols): New macro. * libbfd.h: Regenerated. ld/ PR ld/27425 PR ld/27432 * ldelf.c (ldelf_set_output_arch): New function. * ldelf.h (ldelf_set_output_arch): New prototype. * emultempl/elf.em (LDEMUL_SET_OUTPUT_ARCH): Default to ldelf_set_output_arch. * ld-x86-64/pe-x86-64-1.od: Expect __executable_start. * testsuite/ld-x86-64/pe-x86-64-2.od: Likewise. * testsuite/ld-x86-64/pe-x86-64-3.od: Likewise. * testsuite/ld-x86-64/pe-x86-64-4.od: Likewise. * testsuite/ld-x86-64/pe-x86-64-5.od: Likewise. * testsuite/ld-x86-64/pe-x86-64-5.rd: Likewise. * testsuite/ld-x86-64/pe-x86-64-6.obj.bz2: New file. * testsuite/ld-x86-64/pe-x86-64-6.od: Likewise. * testsuite/ld-x86-64/pe-x86-64.exp: Run ld/27425 test.
35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
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.*: +file format .*
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SYMBOL TABLE:
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0+400000 g .text\$mn 0000000000000000 __executable_start
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0+401000 g .text\$mn 0000000000000000 getaddr1
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0+401020 g .text\$mn 0000000000000000 begin
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0+403014 g .bss 0000000000000000 __bss_start
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0+403014 g .bss 0000000000000000 var
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0+401010 g .text\$mn 0000000000000000 getaddr2
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0+403014 g .bss 0000000000000000 _edata
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0+403018 g .bss 0000000000000000 _end
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Disassembly of section .text\$mn:
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0+401000 <getaddr1>:
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+[a-f0-9]+: 48 8d 05 0d 20 00 00 lea 0x200d\(%rip\),%rax # 403014 <__bss_start>
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+[a-f0-9]+: c3 ret
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+[a-f0-9]+: 0f 1f 84 00 00 00 00 00 nopl 0x0\(%rax,%rax,1\)
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0+401010 <getaddr2>:
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+[a-f0-9]+: 48 8d 05 fd 1f 00 00 lea 0x1ffd\(%rip\),%rax # 403014 <__bss_start>
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+[a-f0-9]+: c3 ret
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+[a-f0-9]+: 0f 1f 84 00 00 00 00 00 nopl 0x0\(%rax,%rax,1\)
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0+401020 <begin>:
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+[a-f0-9]+: 48 83 ec 28 sub \$0x28,%rsp
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+[a-f0-9]+: e8 d7 ff ff ff call 401000 <getaddr1>
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+[a-f0-9]+: e8 e2 ff ff ff call 401010 <getaddr2>
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+[a-f0-9]+: 48 83 c4 28 add \$0x28,%rsp
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+[a-f0-9]+: c3 ret
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#pass
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