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authorNick Clifton <nickc@redhat.com>2000-07-21 23:31:53 +0000
committerNick Clifton <nickc@redhat.com>2000-07-21 23:31:53 +0000
commit20bccb34854e0468796b72f96f3c9b1fb1978680 (patch)
treee8f53aca3cf544eb9914158bf84b20f837fa8d1c /bfd
parentf41603356dd6c6ff780c5f92c1a298d54229d055 (diff)
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Applied Michael's Sokolov's patch to implement --embedded-relocs for m68k coff.
Diffstat (limited to 'bfd')
-rw-r--r--bfd/ChangeLog6
-rw-r--r--bfd/coff-m68k.c93
2 files changed, 98 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index eee5f1a..52b30ae 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2000-07-27 Michael Sokolov <msokolov@ivan.Harhan.ORG>
+
+ * coff-m68k.c (bfd_m68k_coff_create_embedded_relocs): New function.
+ * bfd-in.h (bfd_m68k_coff_create_embedded_relocs): Add declaration.
+ * bfd-in2.h: Regenerate.
+
2000-07-21 Nick Clifton <nickc@cygnus.com>
* elf32-mips.c (_bfd_mips_elf_check_relocs): Detect out of
diff --git a/bfd/coff-m68k.c b/bfd/coff-m68k.c
index d7138c0..3ae98db 100644
--- a/bfd/coff-m68k.c
+++ b/bfd/coff-m68k.c
@@ -1,5 +1,5 @@
/* BFD back-end for Motorola 68000 COFF binaries.
- Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1999
+ Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 99, 2000
Free Software Foundation, Inc.
Written by Cygnus Support.
@@ -419,6 +419,97 @@ m68kcoff_common_addend_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
#endif /* ! defined (coff_rtype_to_howto) */
#endif /* COFF_COMMON_ADDEND */
+
+#if !defined ONLY_DECLARE_RELOCS && ! defined STATIC_RELOCS
+/* Given a .data section and a .emreloc in-memory section, store
+ relocation information into the .emreloc section which can be
+ used at runtime to relocate the section. This is called by the
+ linker when the --embedded-relocs switch is used. This is called
+ after the add_symbols entry point has been called for all the
+ objects, and before the final_link entry point is called. */
+
+boolean
+bfd_m68k_coff_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *datasec;
+ asection *relsec;
+ char **errmsg;
+{
+ char *extsyms;
+ bfd_size_type symesz;
+ struct internal_reloc *irel, *irelend;
+ bfd_byte *p;
+
+ BFD_ASSERT (! info->relocateable);
+
+ *errmsg = NULL;
+
+ if (datasec->reloc_count == 0)
+ return true;
+
+ extsyms = obj_coff_external_syms (abfd);
+ symesz = bfd_coff_symesz (abfd);
+
+ irel = _bfd_coff_read_internal_relocs (abfd, datasec, true, NULL, false,
+ NULL);
+ irelend = irel + datasec->reloc_count;
+
+ relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12);
+ if (relsec->contents == NULL)
+ return false;
+
+ p = relsec->contents;
+
+ for (; irel < irelend; irel++, p += 12)
+ {
+ asection *targetsec;
+
+ /* We are going to write a four byte longword into the runtime
+ reloc section. The longword will be the address in the data
+ section which must be relocated. It is followed by the name
+ of the target section NUL-padded or truncated to 8
+ characters. */
+
+ /* We can only relocate absolute longword relocs at run time. */
+ if (irel->r_type != R_RELLONG)
+ {
+ *errmsg = _("unsupported reloc type");
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ if (irel->r_symndx == -1)
+ targetsec = bfd_abs_section_ptr;
+ else
+ {
+ struct coff_link_hash_entry *h;
+
+ h = obj_coff_sym_hashes (abfd)[irel->r_symndx];
+ if (h == NULL)
+ {
+ struct internal_syment isym;
+
+ bfd_coff_swap_sym_in (abfd, extsyms + symesz * irel->r_symndx,
+ &isym);
+ targetsec = coff_section_from_bfd_index (abfd, isym.n_scnum);
+ }
+ else if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ targetsec = h->root.u.def.section;
+ else
+ targetsec = NULL;
+ }
+
+ bfd_put_32 (abfd,
+ (irel->r_vaddr - datasec->vma + datasec->output_offset), p);
+ memset (p + 4, 0, 8);
+ strncpy (p + 4, targetsec->output_section->name, 8);
+ }
+
+ return true;
+}
+#endif /* neither ONLY_DECLARE_RELOCS not STATIC_RELOCS */
#define coff_bfd_is_local_label_name m68k_coff_is_local_label_name