[PATCH] x86-64: Generate R_X86_64_PLT32 for ".long foo@PLT - .L4"

[H.J. Lu]

Add BFD_RELOC_X86_64_PLT32 and use it to generate R_X86_64_PLT32 for
directives like ".long foo@PLT - .L4" so that PLT entries are used to
resolve the PC32 relocation against function symbols for such directives.

bfd/

PR gas/34423
* elf64-x86-64.c (x86_64_reloc_map): Add BFD_RELOC_X86_64_PLT32.
* reloc.c (bfd_reloc_code_real): Add BFD_RELOC_X86_64_PLT32.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.

gas/

PR gas/34423
* config/tc-i386.c (x86_cons): Return BFD_RELOC_X86_64_PLT32 for
directives like ".long foo@PLT - .L4".
(tc_gen_reloc): Generate R_X86_64_PLT32 for BFD_RELOC_X86_64_PLT32
with addend computed like R_X86_64_PC32.
* testsuite/gas/i386/reloc64.l: Updated.
* testsuite/gas/i386/reloc64.s: Replace ".long xtrn@plt - ." with
".long xtrn@plt - _start".
* testsuite/gas/i386/ilp32/reloc64.l: Updated.
* testsuite/gas/i386/ilp32/reloc64.s: Replace ".long xtrn@plt - ."
with ".long xtrn@plt - ptr".
* testsuite/gas/i386/x86-64-jump-table.d: New file.
* testsuite/gas/i386/x86-64-jump-table.d: Likewise.
* testsuite/gas/i386/x86-64-jump-table.s: Likewise.
* testsuite/gas/i386/x86-64.exp: Run x86-64-jump-table.
* testsuite/gas/i386/ilp32/x86-64-jump-table.d: New file.

ld/

PR gas/34423
* testsuite/ld-x86-64/pr34423.c: New file.
* testsuite/ld-x86-64/x86-64-jump-table.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run gas/34423 tests.


-- 
H.J.
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