From a8acc5fb18af9d4b0da318218680534414325e13 Mon Sep 17 00:00:00 2001
From: Nick Clifton <nickc@redhat.com>
Date: Thu, 3 May 2012 13:04:57 +0000
Subject: Add support for Motorola XGATE embedded CPU
---
bfd/elf32-xgate.c | 729 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 729 insertions(+)
create mode 100644 bfd/elf32-xgate.c
(limited to 'bfd/elf32-xgate.c')
diff --git a/bfd/elf32-xgate.c b/bfd/elf32-xgate.c
new file mode 100644
index 0000000..bd5ebc4
--- /dev/null
+++ b/bfd/elf32-xgate.c
@@ -0,0 +1,729 @@
+/* Freescale XGATE-specific support for 32-bit ELF
+ Copyright 2010, 2011, 2012
+ Free Software Foundation, Inc.
+ Contributed by Sean Keys(skeys@ipdatasys.com)
+
+ 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. */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+#include "elf32-xgate.h"
+#include "elf/xgate.h"
+#include "opcode/xgate.h"
+#include "libiberty.h"
+
+/* Relocation functions. */
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_name_lookup (bfd *, const char *);
+static void
+xgate_info_to_howto_rel (bfd *, arelent *, Elf_Internal_Rela *);
+static bfd_boolean
+xgate_elf_set_mach_from_flags (bfd *);
+static struct bfd_hash_entry *
+stub_hash_newfunc (struct bfd_hash_entry *, struct bfd_hash_table *,
+ const char *);
+static struct bfd_link_hash_table*
+xgate_elf_bfd_link_hash_table_create (bfd *);
+
+/* Use REL instead of RELA to save space */
+#define USE_REL 1
+
+static reloc_howto_type elf_xgate_howto_table[] =
+{
+ /* This reloc does nothing. */
+ HOWTO (R_XGATE_NONE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 8 bit absolute relocation. */
+ HOWTO (R_XGATE_8, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_8", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 8 bit PC-rel relocation. */
+ HOWTO (R_XGATE_PCREL_8, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_PCREL_8", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 16 bit absolute relocation. */
+ HOWTO (R_XGATE_16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont /*bitfield */, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_16", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 32 bit absolute relocation. This one is never used for the
+ code relocation. It's used by gas for -gstabs generation. */
+ HOWTO (R_XGATE_32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16 bit PC-rel relocation. */
+ HOWTO (R_XGATE_PCREL_16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_PCREL_16", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable hierarchy. */
+ HOWTO (R_XGATE_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_XGATE_GNU_VTINHERIT", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable member usage. */
+ HOWTO (R_XGATE_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_elf_rel_vtable_reloc_fn, /* special_function */
+ "R_XGATE_GNU_VTENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 24 bit relocation. */
+ HOWTO (R_XGATE_24, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM8_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16-bit low relocation. */
+ HOWTO (R_XGATE_LO16, /* type */
+ 8, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM8_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A page relocation. */
+ HOWTO (R_XGATE_GPAGE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ xgate_elf_special_reloc,/* special_function */
+ "R_XGATE_GPAGE", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 9 bit absolute relocation. */
+ HOWTO (R_XGATE_PCREL_9, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 9, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_PCREL_9", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 8 bit absolute relocation (upper address). */
+ HOWTO (R_XGATE_PCREL_10, /* type */
+ 8, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 10, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_PCREL_10", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 8 bit absolute relocation. */
+ HOWTO (R_XGATE_IMM8_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM8_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16 bit absolute relocation (upper address). */
+ HOWTO (R_XGATE_IMM8_HI, /* type */
+ 8, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM8_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 3 bit absolute relocation. */
+ HOWTO (R_XGATE_IMM3, /* type */
+ 8, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM3", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 4 bit absolute relocation. */
+ HOWTO (R_XGATE_IMM4, /* type */
+ 8, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM4", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 5 bit absolute relocation. */
+ HOWTO (R_XGATE_IMM5, /* type */
+ 8, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_XGATE_IMM5", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ff, /* src_mask */
+ 0x00ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Mark beginning of a jump instruction (any form). */
+ HOWTO (R_XGATE_RL_JUMP, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ xgate_elf_ignore_reloc, /* special_function */
+ "R_XGATE_RL_JUMP", /* name */
+ TRUE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* Mark beginning of Gcc relaxation group instruction. */
+ HOWTO (R_XGATE_RL_GROUP, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ xgate_elf_ignore_reloc, /* special_function */
+ "R_XGATE_RL_GROUP", /* name */
+ TRUE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ TRUE), /* pcrel_offset */
+};
+
+/* Map BFD reloc types to XGATE ELF reloc types. */
+
+struct xgate_reloc_map
+{
+ bfd_reloc_code_real_type bfd_reloc_val;
+ unsigned char elf_reloc_val;
+};
+
+static const struct xgate_reloc_map xgate_reloc_map[] =
+{
+ {BFD_RELOC_NONE, R_XGATE_NONE},
+ {BFD_RELOC_8, R_XGATE_8},
+ {BFD_RELOC_8_PCREL, R_XGATE_PCREL_8},
+ {BFD_RELOC_16_PCREL, R_XGATE_PCREL_16},
+ {BFD_RELOC_16, R_XGATE_16},
+ {BFD_RELOC_32, R_XGATE_32},
+
+ {BFD_RELOC_VTABLE_INHERIT, R_XGATE_GNU_VTINHERIT},
+ {BFD_RELOC_VTABLE_ENTRY, R_XGATE_GNU_VTENTRY},
+
+ {BFD_RELOC_XGATE_LO16, R_XGATE_LO16},
+ {BFD_RELOC_XGATE_GPAGE, R_XGATE_GPAGE},
+ {BFD_RELOC_XGATE_24, R_XGATE_24},
+ {BFD_RELOC_XGATE_PCREL_9, R_XGATE_PCREL_9},
+ {BFD_RELOC_XGATE_PCREL_10, R_XGATE_PCREL_10},
+ {BFD_RELOC_XGATE_IMM8_LO, R_XGATE_IMM8_LO},
+ {BFD_RELOC_XGATE_IMM8_HI, R_XGATE_IMM8_HI},
+ {BFD_RELOC_XGATE_IMM3, R_XGATE_IMM3},
+ {BFD_RELOC_XGATE_IMM4, R_XGATE_IMM4},
+ {BFD_RELOC_XGATE_IMM5, R_XGATE_IMM5},
+
+ {BFD_RELOC_XGATE_RL_JUMP, R_XGATE_RL_JUMP},
+ {BFD_RELOC_XGATE_RL_GROUP, R_XGATE_RL_GROUP},
+};
+
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE (xgate_reloc_map); i++)
+ if (xgate_reloc_map[i].bfd_reloc_val == code)
+ return &elf_xgate_howto_table[xgate_reloc_map[i].elf_reloc_val];
+
+ return NULL;
+}
+
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE (elf_xgate_howto_table); i++)
+ if (elf_xgate_howto_table[i].name != NULL
+ && strcasecmp (elf_xgate_howto_table[i].name, r_name) == 0)
+ return &elf_xgate_howto_table[i];
+
+ return NULL;
+}
+
+/* Set the howto pointer for an XGATE ELF reloc. */
+
+static void
+xgate_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (dst->r_info);
+ BFD_ASSERT(r_type < (unsigned int) R_XGATE_max);
+ cache_ptr->howto = &elf_xgate_howto_table[r_type];
+}
+
+/* Free the derived linker hash table. */
+
+void
+xgate_elf_bfd_link_hash_table_free (struct bfd_link_hash_table *hash)
+{
+ struct xgate_elf_link_hash_table *ret =
+ (struct xgate_elf_link_hash_table *) hash;
+
+ bfd_hash_table_free (ret->stub_hash_table);
+ free (ret->stub_hash_table);
+ _bfd_generic_link_hash_table_free (hash);
+}
+
+/* Create a XGATE ELF linker hash table. */
+
+static struct bfd_link_hash_table*
+xgate_elf_bfd_link_hash_table_create (bfd *abfd)
+{
+ struct xgate_elf_link_hash_table *ret;
+ bfd_size_type amt = sizeof(struct xgate_elf_link_hash_table);
+
+ ret = (struct xgate_elf_link_hash_table *) bfd_malloc (amt);
+ if (ret == (struct xgate_elf_link_hash_table *) NULL)
+ return NULL;
+
+ memset (ret, 0, amt);
+ if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
+ _bfd_elf_link_hash_newfunc, sizeof(struct elf_link_hash_entry),
+ XGATE_ELF_DATA))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ /* Init the stub hash table too. */
+ amt = sizeof(struct bfd_hash_table);
+ ret->stub_hash_table = (struct bfd_hash_table*) bfd_malloc (amt);
+ if (ret->stub_hash_table == NULL)
+ {
+ free (ret);
+ return NULL;
+ }
+
+ if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc,
+ sizeof(struct elf32_xgate_stub_hash_entry)))
+ return NULL;
+
+ ret->stub_bfd = NULL;
+ ret->stub_section = 0;
+ ret->add_stub_section = NULL;
+ ret->sym_cache.abfd = NULL;
+
+ return &ret->root.root;
+}
+
+static bfd_boolean
+xgate_elf_set_mach_from_flags (bfd *abfd ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+/* Specific sections:
+ - The .page0 is a data section that is mapped in [0x0000..0x00FF].
+ Page0 accesses are faster on the M68HC12.
+ - The .vectors is the section that represents the interrupt
+ vectors.
+ - The .xgate section is starts in 0xE08800 or as xgate sees it 0x0800. */
+static const struct bfd_elf_special_section elf32_xgate_special_sections[] =
+{
+ { STRING_COMMA_LEN (".eeprom"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC },
+/*{ STRING_COMMA_LEN (".xgate"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ TODO finish this implementation */
+ { NULL, 0, 0, 0, 0 }
+};
+
+struct xgate_scan_param
+{
+ struct xgate_page_info* pinfo;
+ bfd_boolean use_memory_banks;
+};
+
+/* Assorted hash table functions. */
+
+/* Initialize an entry in the stub hash table. */
+
+static struct bfd_hash_entry *
+stub_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table ATTRIBUTE_UNUSED,
+ const char *string ATTRIBUTE_UNUSED)
+{
+ return entry;
+}
+
+/* Hook called by the linker routine which adds symbols from an object
+ file. */
+
+bfd_boolean
+elf32_xgate_add_symbol_hook (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ Elf_Internal_Sym *sym ATTRIBUTE_UNUSED,
+ const char **namep ATTRIBUTE_UNUSED,
+ flagword *flagsp ATTRIBUTE_UNUSED,
+ asection **secp ATTRIBUTE_UNUSED,
+ bfd_vma *valp ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+/* External entry points for sizing and building linker stubs. */
+
+/* Set up various things so that we can make a list of input sections
+ for each output section included in the link. Returns -1 on error,
+ 0 when no stubs will be needed, and 1 on success. */
+
+int
+elf32_xgate_setup_section_lists (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ return 1;
+}
+
+/* Determine and set the size of the stub section for a final link.
+ The basic idea here is to examine all the relocations looking for
+ PC-relative calls to a target that is unreachable with any "9-bit PC-REL"
+ instruction. */
+
+bfd_boolean
+elf32_xgate_size_stubs (bfd *output_bfd ATTRIBUTE_UNUSED,
+ bfd *stub_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ asection * (*add_stub_section) (const char*, asection*) ATTRIBUTE_UNUSED)
+{
+ return FALSE;
+}
+
+/* Build all the stubs associated with the current output file. The
+ stubs are kept in a hash table attached to the main linker hash
+ table. This function is called via xgateelf_finish in the
+ linker. */
+
+bfd_boolean
+elf32_xgate_build_stubs (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+void
+xgate_elf_get_bank_parameters (struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ return;
+}
+
+/* This function is used for relocs which are only used for relaxing,
+ which the linker should otherwise ignore. */
+
+bfd_reloc_status_type
+xgate_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ if (output_bfd != NULL)
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+}
+
+bfd_reloc_status_type
+xgate_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry ATTRIBUTE_UNUSED,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section ATTRIBUTE_UNUSED,
+ bfd *output_bfd ATTRIBUTE_UNUSED,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ abort ();
+}
+
+/* Look through the relocs for a section during the first phase.
+ Since we don't do .gots or .plts, we just need to consider the
+ virtual table relocs for gc. */
+
+bfd_boolean
+elf32_xgate_check_relocs (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+/* Relocate a XGATE/S12x ELF section. */
+
+bfd_boolean
+elf32_xgate_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ bfd *input_bfd ATTRIBUTE_UNUSED,
+ asection *input_section ATTRIBUTE_UNUSED,
+ bfd_byte *contents ATTRIBUTE_UNUSED,
+ Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED,
+ Elf_Internal_Sym *local_syms ATTRIBUTE_UNUSED,
+ asection **local_sections ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+/* Set and control ELF flags in ELF header. */
+
+bfd_boolean
+_bfd_xgate_elf_set_private_flags (bfd *abfd ATTRIBUTE_UNUSED,
+ flagword flags ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+bfd_boolean
+_bfd_xgate_elf_merge_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED,
+ bfd *obfd ATTRIBUTE_UNUSED)
+{
+ return TRUE;
+}
+
+bfd_boolean
+_bfd_xgate_elf_print_private_bfd_data (bfd *abfd, void *ptr)
+{
+ FILE *file = (FILE *) ptr;
+
+ BFD_ASSERT (abfd != NULL && ptr != NULL);
+
+ /* Print normal ELF private data. */
+ _bfd_elf_print_private_bfd_data (abfd, ptr);
+
+ /* xgettext:c-format */
+ fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
+
+ if (elf_elfheader (abfd)->e_flags & E_XGATE_I32)
+ fprintf (file, _("[abi=32-bit int, "));
+ else
+ fprintf (file, _("[abi=16-bit int, "));
+
+ if (elf_elfheader (abfd)->e_flags & E_XGATE_F64)
+ fprintf (file, _("64-bit double, "));
+ else
+ fprintf (file, _("32-bit double, "));
+ if (elf_elfheader (abfd)->e_flags & EF_XGATE_MACH)
+ fprintf (file, _("cpu=XGATE]"));
+ else
+ fprintf (file, _("error reading cpu type from elf private data"));
+ fputc ('\n', file);
+
+ return TRUE;
+}
+
+void
+elf32_xgate_post_process_headers (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
+{
+
+}
+
+#define ELF_ARCH bfd_arch_xgate
+#define ELF_MACHINE_CODE EM_XGATE
+#define ELF_TARGET_ID XGATE_ELF_DATA
+
+#define ELF_MAXPAGESIZE 0x1000
+
+#define TARGET_BIG_SYM bfd_elf32_xgate_vec
+#define TARGET_BIG_NAME "elf32-xgate"
+
+#define elf_info_to_howto 0
+#define elf_info_to_howto_rel xgate_info_to_howto_rel
+#define elf_backend_check_relocs elf32_xgate_check_relocs
+#define elf_backend_relocate_section elf32_xgate_relocate_section
+#define elf_backend_object_p xgate_elf_set_mach_from_flags
+#define elf_backend_final_write_processing 0
+#define elf_backend_can_gc_sections 1
+#define elf_backend_special_sections elf32_xgate_special_sections
+#define elf_backend_post_process_headers elf32_xgate_post_process_headers
+#define elf_backend_add_symbol_hook elf32_xgate_add_symbol_hook
+
+#define bfd_elf32_bfd_link_hash_table_create xgate_elf_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_free xgate_elf_bfd_link_hash_table_free
+#define bfd_elf32_bfd_merge_private_bfd_data _bfd_xgate_elf_merge_private_bfd_data
+#define bfd_elf32_bfd_set_private_flags _bfd_xgate_elf_set_private_flags
+#define bfd_elf32_bfd_print_private_bfd_data _bfd_xgate_elf_print_private_bfd_data
+
+#define xgate_stub_hash_lookup(table, string, create, copy) \
+ ((struct elf32_xgate_stub_hash_entry *) \
+ bfd_hash_lookup ((table), (string), (create), (copy)))
+
+#include "elf32-target.h"
--
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