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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c

diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 59c29226662e827da21b588706df75a8fb231c1f..16199fbe3ed4295affbd9aafa2e15f0ce9086be7 100644 (file)
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -64,7 +64,8 @@ static bfd_vma opd_entry_value
 #define ELF_TARGET_ID          PPC64_ELF_DATA
 #define ELF_MACHINE_CODE       EM_PPC64
 #define ELF_MAXPAGESIZE                0x10000
-#define ELF_COMMONPAGESIZE     0x10000
+#define ELF_COMMONPAGESIZE     0x1000
+#define ELF_RELROPAGESIZE      ELF_MAXPAGESIZE
 #define elf_info_to_howto      ppc64_elf_info_to_howto
 
 #define elf_backend_want_got_sym 0
@@ -3034,13 +3035,22 @@ ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
 
     case NT_PRPSINFO:
       {
-       char data[136];
+       char data[136] ATTRIBUTE_NONSTRING;
        va_list ap;
 
        va_start (ap, note_type);
        memset (data, 0, sizeof (data));
        strncpy (data + 40, va_arg (ap, const char *), 16);
+       DIAGNOSTIC_PUSH;
+       /* GCC 8.1 warns about 80 equals destination size with
+          -Wstringop-truncation:
+          https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
+        */
+#if GCC_VERSION == 8001
+       DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
+#endif
        strncpy (data + 56, va_arg (ap, const char *), 80);
+       DIAGNOSTIC_POP;
        va_end (ap);
        return elfcore_write_note (abfd, buf, bufsiz,
                                   "CORE", note_type, data, sizeof (data));
@@ -3365,13 +3375,23 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
 
       if (!relocatable && symcount > 1)
        {
-         /* Trim duplicate syms, since we may have merged the normal and
-            dynamic symbols.  Actually, we only care about syms that have
-            different values, so trim any with the same value.  */
+         /* Trim duplicate syms, since we may have merged the normal
+            and dynamic symbols.  Actually, we only care about syms
+            that have different values, so trim any with the same
+            value.  Don't consider ifunc and ifunc resolver symbols
+            duplicates however, because GDB wants to know whether a
+            text symbol is an ifunc resolver.  */
          for (i = 1, j = 1; i < symcount; ++i)
-           if (syms[i - 1]->value + syms[i - 1]->section->vma
-               != syms[i]->value + syms[i]->section->vma)
-             syms[j++] = syms[i];
+           {
+             const asymbol *s0 = syms[i - 1];
+             const asymbol *s1 = syms[i];
+
+             if ((s0->value + s0->section->vma
+                  != s1->value + s1->section->vma)
+                 || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION)
+                     != (s1->flags & BSF_GNU_INDIRECT_FUNCTION)))
+               syms[j++] = syms[i];
+           }
          symcount = j;
        }
 
@@ -5023,11 +5043,6 @@ ppc64_elf_add_symbol_hook (bfd *ibfd,
                           asection **sec,
                           bfd_vma *value)
 {
-  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
-      && (ibfd->flags & DYNAMIC) == 0
-      && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
-    elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
-
   if (*sec != NULL
       && strcmp ((*sec)->name, ".opd") == 0)
     {
@@ -7293,8 +7308,8 @@ ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
              if (!readonly_dynrelocs (h))
                {
                  h->pointer_equality_needed = 0;
-                 /* If we haven't seen a branch reloc then we don't need
-                    a plt entry.  */
+                 /* If we haven't seen a branch reloc and the symbol
+                    isn't an ifunc then we don't need a plt entry.  */
                  if (!h->needs_plt)
                    h->plt.plist = NULL;
                }
@@ -7310,8 +7325,8 @@ ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
       else if (!h->needs_plt
               && !readonly_dynrelocs (h))
        {
-         /* If we haven't seen a branch reloc then we don't need a
-            plt entry.  */
+         /* If we haven't seen a branch reloc and the symbol isn't an
+            ifunc then we don't need a plt entry.  */
          h->plt.plist = NULL;
          h->pointer_equality_needed = 0;
          return TRUE;
@@ -11749,7 +11764,7 @@ ppc64_elf_setup_section_lists (struct bfd_link_info *info)
   if (htab == NULL)
     return -1;
 
-  htab->sec_info_arr_size = bfd_get_next_section_id ();
+  htab->sec_info_arr_size = _bfd_section_id;
   amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
   htab->sec_info = bfd_zmalloc (amt);
   if (htab->sec_info == NULL)