}
}
-static bfd_boolean elf32_arm_section_flags (flagword *, const Elf_Internal_Shdr *);
-static void elf32_arm_final_write_processing (bfd *, bfd_boolean);
-
/* Set the right machine number for an Arm ELF file. */
static bfd_boolean
bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
}
+/* Return TRUE if this is an unwinding table entry. */
+
+static bfd_boolean
+is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
+{
+ size_t len1, len2;
+
+ len1 = sizeof (ELF_STRING_ARM_unwind) - 1;
+ len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1;
+ return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0
+ || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0);
+}
+
+
+/* Set the type and flags for an ARM section. We do this by
+ the section name, which is a hack, but ought to work. */
+
+static bfd_boolean
+elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
+{
+ const char * name;
+
+ name = bfd_get_section_name (abfd, sec);
+
+ if (is_arm_elf_unwind_section_name (abfd, name))
+ {
+ hdr->sh_type = SHT_ARM_EXIDX;
+ hdr->sh_flags |= SHF_LINK_ORDER;
+ }
+ return TRUE;
+}
+
+/* Handle an ARM specific section when reading an object file.
+ This is called when elf.c finds a section with an unknown type. */
+
+static bfd_boolean
+elf32_arm_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr * hdr,
+ const char *name)
+{
+ /* There ought to be a place to keep ELF backend specific flags, but
+ at the moment there isn't one. We just keep track of the
+ sections by their name, instead. Fortunately, the ABI gives
+ names for all the ARM specific sections, so we will probably get
+ away with this. */
+ switch (hdr->sh_type)
+ {
+ case SHT_ARM_EXIDX:
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ return FALSE;
+
+ return TRUE;
+}
/* Called for each symbol. Builds a section map based on mapping symbols.
Does not alter any of the symbols. */
#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
#define elf_backend_object_p elf32_arm_object_p
#define elf_backend_section_flags elf32_arm_section_flags
+#define elf_backend_fake_sections elf32_arm_fake_sections
+#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
#define elf_backend_final_write_processing elf32_arm_final_write_processing
#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
#define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */
#define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */
+/* Additional section types. */
+#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */
+
/* ARM-specific values for sh_flags. */
#define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */
#define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */
/* The name of the note section used to identify arm variants. */
#define ARM_NOTE_SECTION ".note.gnu.arm.ident"
-
+
+/* Special section names. */
+#define ELF_STRING_ARM_unwind ".ARM.exidx"
+#define ELF_STRING_ARM_unwind_info ".ARM.extab"
+#define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx."
+#define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab."
+
#endif /* _ELF_ARM_H */