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[binutils-gdb.git] / bfd / elf-bfd.h

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 05e17c8f5b0206b6f5c9dcd680625d6a9ac81897..754e7335b651a997d1a9a5b0466d81c6a770ae07 100644 (file)
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -426,6 +426,7 @@ enum elf_target_id
   SH_ELF_DATA,
   SPARC_ELF_DATA,
   SPU_ELF_DATA,
+  TIC6X_ELF_DATA,
   X86_64_ELF_DATA,
   XTENSA_ELF_DATA,
   GENERIC_ELF_DATA
@@ -1244,10 +1245,11 @@ struct elf_backend_data
   /* The section type to use for an attributes section.  */
   unsigned int obj_attrs_section_type;
 
-  /* This function determines the order in which any attributes are written.
-     It must be defined for input in the range 4..NUM_KNOWN_OBJ_ATTRIBUTES-1
-     (this range is used in order to make unity easy).  The returned value is
-     the actual tag number to place in the input position.  */
+  /* This function determines the order in which any attributes are
+     written.  It must be defined for input in the range
+     LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
+     is used in order to make unity easy).  The returned value is the
+     actual tag number to place in the input position.  */
   int (*obj_attrs_order) (int);
 
   /* This is TRUE if the linker should act like collect and gather
@@ -1411,6 +1413,12 @@ struct bfd_elf_section_data
 #define get_elf_backend_data(abfd) \
    xvec_get_elf_backend_data ((abfd)->xvec)
 
+/* The least object attributes (within an attributes subsection) known
+   for any target.  Some code assumes that the value 0 is not used and
+   the field for that attribute can instead be used as a marker to
+   indicate that attributes have been initialized.  */
+#define LEAST_KNOWN_OBJ_ATTRIBUTE 2
+
 /* The maximum number of known object attributes for any target.  */
 #define NUM_KNOWN_OBJ_ATTRIBUTES 71
 
@@ -2324,9 +2332,53 @@ extern asection _bfd_elf_large_com_section;
            return FALSE;                                               \
          warned = TRUE;                                                \
        }                                                               \
+      (void) unresolved_reloc;                                         \
+      (void) warned;                                                   \
     }                                                                  \
   while (0)
 
+/* This macro is to avoid lots of duplicated code in the body of the
+   loop over relocations in xxx_relocate_section() in the various
+   elfxx-xxxx.c files.
+   
+   Handle relocations against symbols from removed linkonce sections,
+   or sections discarded by a linker script.  When doing a relocatable
+   link, we remove such relocations.  Otherwise, we just want the
+   section contents zeroed and avoid any special processing.  */
+#define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section,        \
+                                       rel, relend, howto, contents)   \
+  {                                                                    \
+    if (info->relocatable                                              \
+       && (input_section->flags & SEC_DEBUGGING))                      \
+      {                                                                        \
+       /* Only remove relocations in debug sections since other        \
+          sections may require relocations.  */                        \
+       Elf_Internal_Shdr *rel_hdr;                                     \
+                                                                       \
+       rel_hdr = &elf_section_data (input_section->output_section)->rel_hdr; \
+                                                                       \
+       /* Avoid empty output section.  */                              \
+       if (rel_hdr->sh_size > rel_hdr->sh_entsize)                     \
+         {                                                             \
+           rel_hdr->sh_size -= rel_hdr->sh_entsize;                    \
+           rel_hdr = &elf_section_data (input_section)->rel_hdr;       \
+           rel_hdr->sh_size -= rel_hdr->sh_entsize;                    \
+                                                                       \
+           memmove (rel, rel + 1, (relend - rel) * sizeof (*rel));     \
+                                                                       \
+           input_section->reloc_count--;                               \
+           relend--;                                                   \
+           rel--;                                                      \
+           continue;                                                   \
+         }                                                             \
+      }                                                                        \
+                                                                       \
+    _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);  \
+    rel->r_info = 0;                                                   \
+    rel->r_addend = 0;                                                 \
+    continue;                                                          \
+  }
+
 /* Will a symbol be bound to the the definition within the shared
    library, if any.  A unique symbol can never be bound locally.  */
 #define SYMBOLIC_BIND(INFO, H) \