Add support for Motorola XGATE embedded CPU

1 files changed, 144 insertions, 0 deletions

diff --git a/bfd/elf32-xgate.h b/bfd/elf32-xgate.h
new file mode 100644
index 0000000..7ecdf12
--- /dev/null
+++ b/bfd/elf32-xgate.h
@@ -0,0 +1,144 @@
+/* Freescale XGATE-specific support for 32-bit ELF
+   Copyright 2012 Free Software Foundation, Inc.
+
+   Contributed by Sean Keys (skeys@ipdatasys.com)
+   (Heavily copied from the HC11 port by Stephane Carrez (stcarrez@nerim.fr))
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#ifndef _ELF32_XGATE_H
+#define _ELF32_XGATE_H
+
+#include "elf-bfd.h"
+#include "bfdlink.h"
+#include "elf/xgate.h"
+
+/* Set and control ELF flags in ELF header.  */
+extern bfd_boolean _bfd_xgate_elf_merge_private_bfd_data (bfd*,bfd*);
+extern bfd_boolean _bfd_xgate_elf_set_private_flags (bfd*,flagword);
+extern bfd_boolean _bfd_xgate_elf_print_private_bfd_data (bfd*, void*);
+
+struct elf32_xgate_stub_hash_entry
+{
+  /* Base hash table entry structure.  */
+  struct bfd_hash_entry root;
+
+  /* The stub section.  */
+  asection *stub_sec;
+
+  /* Offset within stub_sec of the beginning of this stub.  */
+  bfd_vma stub_offset;
+
+  /* Given the symbol's value and its section we can determine its final
+     value when building the stubs (so the stub knows where to jump.  */
+  bfd_vma target_value;
+  asection *target_section;
+};
+
+struct xgate_page_info
+{
+  bfd_vma bank_virtual;
+  bfd_vma bank_physical;
+  bfd_vma bank_physical_end;
+  bfd_vma bank_mask;
+  bfd_vma bank_size;
+  int bank_shift;
+  int bank_param_initialized;
+  bfd_vma trampoline_addr;
+};
+
+struct xgate_elf_link_hash_table
+{
+  struct elf_link_hash_table root;
+  struct xgate_page_info pinfo;
+
+  /* The stub hash table.  */
+  struct bfd_hash_table* stub_hash_table;
+
+  /* Linker stub bfd.  */
+  bfd *stub_bfd;
+
+  asection* stub_section;
+  asection* tramp_section;
+
+  /* Linker call-backs.  */
+  asection * (*add_stub_section) (const char *, asection *);
+
+  /* Assorted information used by elf32_hppa_size_stubs.  */
+  unsigned int bfd_count;
+  int          top_index;
+  asection **  input_list;
+
+  /* Small local sym cache.  */
+  struct sym_cache sym_cache;
+
+  bfd_boolean (*size_one_stub) (struct bfd_hash_entry*, void*);
+  bfd_boolean (*build_one_stub) (struct bfd_hash_entry*, void*);
+};
+
+/* Get the XGate ELF linker hash table from a link_info structure.  */
+
+#define xgate_elf_hash_table(p) \
+  ((struct xgate_elf_link_hash_table *) ((p)->hash))
+
+/* Create a XGATE ELF linker hash table.  */
+
+extern struct xgate_elf_link_hash_table* xgate_elf_hash_table_create
+  (bfd *);
+extern void xgate_elf_bfd_link_hash_table_free (struct bfd_link_hash_table *);
+
+extern void xgate_elf_get_bank_parameters (struct bfd_link_info *);
+
+/* Return 1 if the address is in banked memory.
+   This can be applied to a virtual address and to a physical address.  */
+extern int xgate_addr_is_banked (struct xgate_page_info *, bfd_vma);
+
+/* Return the physical address seen by the processor, taking
+   into account banked memory.  */
+extern bfd_vma xgate_phys_addr (struct xgate_page_info *, bfd_vma);
+
+/* Return the page number corresponding to an address in banked memory.  */
+extern bfd_vma xgate_phys_page (struct xgate_page_info *, bfd_vma);
+
+bfd_reloc_status_type xgate_elf_ignore_reloc
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+bfd_reloc_status_type xgate_elf_special_reloc
+  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+bfd_boolean elf32_xgate_check_relocs
+  (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
+bfd_boolean elf32_xgate_relocate_section
+  (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+   Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
+
+bfd_boolean elf32_xgate_add_symbol_hook
+  (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **,
+   flagword *, asection **, bfd_vma *);
+
+/* Tweak the OSABI field of the elf header.  */
+extern void elf32_xgate_post_process_headers (bfd *, struct bfd_link_info *);
+
+int elf32_xgate_setup_section_lists (bfd *, struct bfd_link_info *);
+
+bfd_boolean elf32_xgate_size_stubs
+  (bfd *, bfd *, struct bfd_link_info *,
+   asection * (*) (const char *, asection *));
+
+bfd_boolean elf32_xgate_build_stubs (bfd * abfd, struct bfd_link_info *);
+
+#endif /* _ELF32_XGATE_H */