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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/xcofflink.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/xcofflink.c')
| -rw-r--r-- | bfd/xcofflink.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/bfd/xcofflink.c b/bfd/xcofflink.c index f0e0fe7..1607cd5 100644 --- a/bfd/xcofflink.c +++ b/bfd/xcofflink.c @@ -2653,7 +2653,7 @@ xcoff_auto_export_p (struct bfd_link_info *info, static bool xcoff_need_ldrel_p (struct bfd_link_info *info, struct internal_reloc *rel, - struct xcoff_link_hash_entry *h) + struct xcoff_link_hash_entry *h, asection *ssec) { if (!xcoff_hash_table (info)->loader_section) return false; @@ -2701,6 +2701,14 @@ xcoff_need_ldrel_p (struct bfd_link_info *info, struct internal_reloc *rel, && bfd_is_abs_section (sec->output_section))) return false; } + + /* Absolute relocations from read-only sections are forbidden + by AIX loader. However, they can appear in their section's + relocations. */ + if (ssec != NULL + && (ssec->output_section->flags & SEC_READONLY) != 0) + return false; + return true; case R_TLS: @@ -2989,7 +2997,7 @@ xcoff_mark (struct bfd_link_info *info, asection *sec) /* See if this reloc needs to be copied into the .loader section. */ - if (xcoff_need_ldrel_p (info, rel, h)) + if (xcoff_need_ldrel_p (info, rel, h, sec)) { ++xcoff_hash_table (info)->ldrel_count; if (h != NULL) @@ -4982,7 +4990,7 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *flinfo, } if ((o->flags & SEC_DEBUGGING) == 0 - && xcoff_need_ldrel_p (flinfo->info, irel, h)) + && xcoff_need_ldrel_p (flinfo->info, irel, h, o)) { asection *sec; |