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| author | Cl?ment Chigot <clement.chigot@atos.net> | 2021-04-20 14:40:43 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2021-04-20 14:40:43 +0100 |
| commit | c5df7e442e6cdc9303b7373842370d6ee8f67ea5 (patch) | |
| tree | 28e1442062fdbb13b5c46d98ceeba9c556e6f3b0 /bfd/coff64-rs6000.c | |
| parent | d549b029d6d622af531211ef4c7bc48cb5011d93 (diff) | |
| download | gdb-c5df7e442e6cdc9303b7373842370d6ee8f67ea5.zip gdb-c5df7e442e6cdc9303b7373842370d6ee8f67ea5.tar.gz gdb-c5df7e442e6cdc9303b7373842370d6ee8f67ea5.tar.bz2 | |
Rework the R_NEG support on both gas and ld for the PowerPC AIX targets, in order to manage C++ exceptions built with GCC.
bfd PR binutils/21700
* reloc.c (BFD_RELOC_PPC_NEG): New relocation.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
* coff-rs6000.c (_bfd_xcoff_reloc_type_lookup): Add
BFD_RELOC_PPC_NEG handler.
(xcoff_reloc_type_neg): Correctly substract addend.
* coff64-rs6000.c (xcoff64_howto_table): Add R_NEG_32
howto.
(xcoff64_rtype2howto): Add handler for R_NEG_32.
(xcoff64_reloc_type_lookup): Add BFD_RELOC_PPC_NEG handler.
* xcofflink.c (xcoff_need_ldrel_p): Check output section
for R_POS-like relocations. New argument added.
(xcoff_mark): Adapt to new xcoff_need_ldrel_p argument.
(xcoff_link_input_bfd): Likewise.
gas * config/tc-ppc.c (ppc_get_csect_to_adjust): New function.
(ppc_fix_adjustable): Manage fx_subsy part.
(tc_gen_reloc): Create second relocation when both
fx_addsy and fx_subsy are provided.
* config/tc-ppc.h (RELOC_EXPANSION_POSSIBLE): New define.
(MAX_RELOC_EXPANSION): Likewise.
(TC_FORCE_RELOCATION_SUB_SAME): Likewise
(UNDEFINED_DIFFERENCE_OK): Likewise
* testsuite/gas/all/gas.exp: Skip difference between two
undefined symbols test.
ld * testsuite/ld-powerpc/aix52.exp: Add new test.
* testsuite/ld-powerpc/aix-neg-reloc-32.d: New test.
* testsuite/ld-powerpc/aix-neg-reloc-64.d: New test.
* testsuite/ld-powerpc/aix-neg-reloc.ex: New test.
* testsuite/ld-powerpc/aix-neg-reloc.s: New test.
Diffstat (limited to 'bfd/coff64-rs6000.c')
| -rw-r--r-- | bfd/coff64-rs6000.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/bfd/coff64-rs6000.c b/bfd/coff64-rs6000.c index cc671b2..8895340 100644 --- a/bfd/coff64-rs6000.c +++ b/bfd/coff64-rs6000.c @@ -1320,7 +1320,21 @@ reloc_howto_type xcoff64_howto_table[] = MINUS_ONE, /* dst_mask */ false), /* pcrel_offset */ - EMPTY_HOWTO(0x26), + /* 0x26: 32 bit relocation, but store negative value. */ + HOWTO (R_NEG, /* type */ + 0, /* rightshift */ + -2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_NEG_32", /* name */ + true, /* partial_inplace */ + MINUS_ONE, /* src_mask */ + MINUS_ONE, /* dst_mask */ + false), /* pcrel_offset */ + EMPTY_HOWTO(0x27), EMPTY_HOWTO(0x28), EMPTY_HOWTO(0x29), @@ -1386,6 +1400,9 @@ xcoff64_rtype2howto (arelent *relent, struct internal_reloc *internal) { if (R_POS == internal->r_type) relent->howto = &xcoff64_howto_table[0x1c]; + + if (R_NEG == internal->r_type) + relent->howto = &xcoff64_howto_table[0x26]; } /* The r_size field of an XCOFF reloc encodes the bitsize of the @@ -1426,6 +1443,8 @@ xcoff64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, return &xcoff64_howto_table[0]; case BFD_RELOC_NONE: return &xcoff64_howto_table[0xf]; + case BFD_RELOC_PPC_NEG: + return &xcoff64_howto_table[0x1]; case BFD_RELOC_PPC64_TLSGD: return &xcoff64_howto_table[0x20]; case BFD_RELOC_PPC64_TLSIE: |