gdb/

	STT_GNU_IFUNC reader implementation.
	* elfread.c: Include gdbtypes.h, value.h and infcall.h.
	(SYMBOL_GOT_PLT_SUFFIX, elf_rel_plt_read)
	(elf_objfile_gnu_ifunc_cache_data, struct elf_gnu_ifunc_cache)
	(elf_gnu_ifunc_cache_hash, elf_gnu_ifunc_cache_eq)
	(elf_gnu_ifunc_record_cache, elf_gnu_ifunc_resolve_by_cache)
	(elf_gnu_ifunc_resolve_by_got, elf_gnu_ifunc_resolve_name)
	(elf_gnu_ifunc_resolve_addr): New.
	(elf_symfile_read): Call elf_rel_plt_read.
	(elf_gnu_ifunc_fns): New.
	(_initialize_elfread): Initialize elf_objfile_gnu_ifunc_cache_data.
	Install elf_gnu_ifunc_fns.
	* infcall.c (find_function_return_type): New function.
	(find_function_addr): Resolve TYPE_GNU_IFUNC functions, if possible.
	* minsyms.c (stub_gnu_ifunc_resolve_addr)
	(stub_gnu_ifunc_resolve_name): New functions.
	(stub_gnu_ifunc_fns, gnu_ifunc_fns_p): New variables.
	* symtab.h (struct gnu_ifunc_fns, gnu_ifunc_resolve_addr)
	(gnu_ifunc_resolve_name, gnu_ifunc_fns_p): New.

1 files changed, 18 insertions, 0 deletions

diff --git a/gdb/symtab.h b/gdb/symtab.h
index 0645515f3f..bc48d3c9b2 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -1044,6 +1044,24 @@ extern struct minimal_symbol *lookup_minimal_symbol_by_pc (CORE_ADDR);
 
 extern int in_gnu_ifunc_stub (CORE_ADDR pc);
 
+/* Functions for resolving STT_GNU_IFUNC symbols which are implemented only
+   for ELF symbol files.  */
+
+struct gnu_ifunc_fns
+{
+  /* See elf_gnu_ifunc_resolve_addr for its real implementation.  */
+  CORE_ADDR (*gnu_ifunc_resolve_addr) (struct gdbarch *gdbarch, CORE_ADDR pc);
+
+  /* See elf_gnu_ifunc_resolve_name for its real implementation.  */
+  int (*gnu_ifunc_resolve_name) (const char *function_name,
+				 CORE_ADDR *function_address_p);
+};
+
+#define gnu_ifunc_resolve_addr gnu_ifunc_fns_p->gnu_ifunc_resolve_addr
+#define gnu_ifunc_resolve_name gnu_ifunc_fns_p->gnu_ifunc_resolve_name
+
+extern const struct gnu_ifunc_fns *gnu_ifunc_fns_p;
+
 extern struct minimal_symbol *
     lookup_minimal_symbol_and_objfile (const char *,
 				       struct objfile **);