#define SYMBOL_REFERENCES_LOCAL_P(INFO, H) \
_bfd_x86_elf_link_symbol_references_local ((INFO), (H))
-/* Is a undefined weak symbol which is resolved to 0. Reference to an
- undefined weak symbol is resolved to 0 when building executable if
- it isn't dynamic and
- 1. Has non-GOT/non-PLT relocations in text section. Or
- 2. Has no GOT/PLT relocation.
- Local undefined weak symbol is always resolved to 0.
- */
+/* TRUE if an undefined weak symbol should be resolved to 0. Local
+ undefined weak symbol is always resolved to 0. Reference to an
+ undefined weak symbol is resolved to 0 in executable if undefined
+ weak symbol should be resolved to 0 (zero_undefweak > 0). */
#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
((EH)->elf.root.type == bfd_link_hash_undefweak \
&& (SYMBOL_REFERENCES_LOCAL_P ((INFO), &(EH)->elf) \
|| (bfd_link_executable (INFO) \
- && (!(EH)->has_got_reloc \
- || (EH)->has_non_got_reloc))))
+ && (EH)->zero_undefweak > 0)))
/* Should copy relocation be generated for a symbol. Don't generate
copy relocation against a protected symbol defined in a shared
&& ((H)->root.type == bfd_link_hash_defweak \
|| !(H)->def_regular)))
+/* TRUE if dynamic relocation should be generated. Don't copy a
+ pc-relative relocation into the output file if the symbol needs
+ copy reloc or the symbol is undefined when building executable.
+ Copy dynamic function pointer relocations. Don't generate dynamic
+ relocations against resolved undefined weak symbols in PIE, except
+ when PC32_RELOC is TRUE. Undefined weak symbol is bound locally
+ when PIC is false. */
+#define GENERATE_DYNAMIC_RELOCATION_P(INFO, EH, R_TYPE, \
+ NEED_COPY_RELOC_IN_PIE, \
+ RESOLVED_TO_ZERO, PC32_RELOC) \
+ ((bfd_link_pic (INFO) \
+ && !(NEED_COPY_RELOC_IN_PIE) \
+ && ((EH) == NULL \
+ || ((ELF_ST_VISIBILITY ((EH)->elf.other) == STV_DEFAULT \
+ && (!(RESOLVED_TO_ZERO) || PC32_RELOC)) \
+ || (EH)->elf.root.type != bfd_link_hash_undefweak)) \
+ && ((!X86_PCREL_TYPE_P (R_TYPE) \
+ && !X86_SIZE_TYPE_P (R_TYPE)) \
+ || ! SYMBOL_CALLS_LOCAL ((INFO), &(EH)->elf))) \
+ || (ELIMINATE_COPY_RELOCS \
+ && !bfd_link_pic (INFO) \
+ && (EH) != NULL \
+ && (EH)->elf.dynindx != -1 \
+ && (!(EH)->elf.non_got_ref \
+ || (EH)->func_pointer_refcount > 0 \
+ || ((EH)->elf.root.type == bfd_link_hash_undefweak \
+ && !(RESOLVED_TO_ZERO))) \
+ && (((EH)->elf.def_dynamic && !(EH)->elf.def_regular) \
+ || (EH)->elf.root.type == bfd_link_hash_undefined)))
+
+/* TRUE if this input relocation should be copied to output. H->dynindx
+ may be -1 if this symbol was marked to become local. */
+#define COPY_INPUT_RELOC_P(INFO, H, R_TYPE) \
+ ((H) != NULL \
+ && (H)->dynindx != -1 \
+ && (X86_PCREL_TYPE_P (R_TYPE) \
+ || !(bfd_link_executable (INFO) || SYMBOLIC_BIND ((INFO), (H))) \
+ || !(H)->def_regular))
+
/* TRUE if this is actually a static link, or it is a -Bsymbolic link
and the symbol is defined locally, or the symbol was forced to be
local because of a version file. */
&& (H)->dynindx == -1 \
&& (TLS_TYPE & GOT_TLS_IE))
+/* Verify that the symbol has an entry in the procedure linkage table. */
+#define VERIFY_PLT_ENTRY(INFO, H, PLT, GOTPLT, RELPLT, LOCAL_UNDEFWEAK) \
+ do \
+ { \
+ if (((H)->dynindx == -1 \
+ && !LOCAL_UNDEFWEAK \
+ && !(((H)->forced_local || bfd_link_executable (INFO)) \
+ && (H)->def_regular \
+ && (H)->type == STT_GNU_IFUNC)) \
+ || (PLT) == NULL \
+ || (GOTPLT) == NULL \
+ || (RELPLT) == NULL) \
+ abort (); \
+ } \
+ while (0);
+
+/* Verify that the symbol supports copy relocation. */
+#define VERIFY_COPY_RELOC(H, HTAB) \
+ do \
+ { \
+ if ((H)->dynindx == -1 \
+ || ((H)->root.type != bfd_link_hash_defined \
+ && (H)->root.type != bfd_link_hash_defweak) \
+ || (HTAB)->elf.srelbss == NULL \
+ || (HTAB)->elf.sreldynrelro == NULL) \
+ abort (); \
+ } \
+ while (0);
+
/* x86 ELF linker hash entry. */
struct elf_x86_link_hash_entry
unsigned char tls_type;
- /* TRUE if symbol has GOT or PLT relocations. */
- unsigned int has_got_reloc : 1;
-
- /* TRUE if symbol has non-GOT/non-PLT relocations in text sections. */
- unsigned int has_non_got_reloc : 1;
+ /* Bit 0: Symbol has no GOT nor PLT relocations.
+ Bit 1: Symbol has non-GOT/non-PLT relocations in text sections.
+ zero_undefweak is initialized to 1 and undefined weak symbol
+ should be resolved to 0 if zero_undefweak > 0. */
+ unsigned int zero_undefweak : 2;
/* Don't call finish_dynamic_symbol on this symbol. */
unsigned int no_finish_dynamic_symbol : 1;
projects / deliverable / binutils-gdb.git / blobdiff