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-rw-r--r--binutils-2.25/bfd/coff-m88k.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/coff-m88k.c b/binutils-2.25/bfd/coff-m88k.c
new file mode 100644
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--- /dev/null
+++ b/binutils-2.25/bfd/coff-m88k.c
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+/* BFD back-end for Motorola 88000 COFF "Binary Compatibility Standard" files.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2005, 2007, 2008, 2012 Free Software Foundation, Inc.
+ Written by Cygnus Support.
+
+ 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. */
+
+#define M88 1 /* Customize various include files */
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "coff/m88k.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+static bfd_reloc_status_type m88k_special_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
+
+#define GET_SCNHDR_NRELOC H_GET_32
+#define GET_SCNHDR_NLNNO H_GET_32
+
+/* On coff-m88k, local labels start with '@'. */
+
+#define coff_bfd_is_local_label_name m88k_is_local_label_name
+
+static bfd_boolean
+m88k_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
+{
+ return name[0] == '@';
+}
+
+static bfd_reloc_status_type
+m88k_special_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void * data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ reloc_howto_type *howto = reloc_entry->howto;
+
+ switch (howto->type)
+ {
+ case R_HVRT16:
+ case R_LVRT16:
+ if (output_bfd != (bfd *) NULL)
+ {
+ /* This is a partial relocation, and we want to apply the
+ relocation to the reloc entry rather than the raw data.
+ Modify the reloc inplace to reflect what we now know. */
+
+ reloc_entry->address += input_section->output_offset;
+ }
+ else
+ {
+ bfd_vma output_base = 0;
+ bfd_vma addr = reloc_entry->address;
+ bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
+ asection *reloc_target_output_section;
+ long relocation = 0;
+
+ /* Work out which section the relocation is targeted at and the
+ initial relocation command value. */
+
+ /* Get symbol value. (Common symbols are special.) */
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ reloc_target_output_section = symbol->section->output_section;
+
+ /* Convert input-section-relative symbol value to absolute. */
+ if (output_bfd)
+ output_base = 0;
+ else
+ output_base = reloc_target_output_section->vma;
+
+ relocation += output_base + symbol->section->output_offset;
+
+ /* Add in supplied addend. */
+ relocation += ((reloc_entry->addend << howto->bitsize) + x);
+
+ reloc_entry->addend = 0;
+
+ relocation >>= (bfd_vma) howto->rightshift;
+
+ /* Shift everything up to where it's going to be used */
+
+ relocation <<= (bfd_vma) howto->bitpos;
+
+ if (relocation)
+ bfd_put_16 (abfd, (bfd_vma) relocation,
+ (unsigned char *) data + addr);
+ }
+
+ /* If we are not producing relocatable output, return an error if
+ the symbol is not defined. */
+ if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ return bfd_reloc_ok;
+
+ default:
+ if (output_bfd != (bfd *) NULL)
+ {
+ /* This is a partial relocation, and we want to apply the
+ relocation to the reloc entry rather than the raw data.
+ Modify the reloc inplace to reflect what we now know. */
+
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+ break;
+ }
+
+ if (output_bfd == (bfd *) NULL)
+ return bfd_reloc_continue;
+
+ return bfd_reloc_ok;
+}
+
+static reloc_howto_type howto_table[] =
+{
+ HOWTO (R_PCR16L, /* type */
+ 02, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "PCR16L", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_PCR26L, /* type */
+ 02, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "PCR26L", /* name */
+ FALSE, /* partial_inplace */
+ 0x03ffffff, /* src_mask */
+ 0x03ffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_VRT16, /* type */
+ 00, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "VRT16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_HVRT16, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "HVRT16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_LVRT16, /* type */
+ 00, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "LVRT16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_VRT32, /* type */
+ 00, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ m88k_special_reloc, /* special_function */
+ "VRT32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+};
+
+/* Code to turn an external r_type into a pointer to an entry in the
+ above howto table. */
+static void
+rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
+{
+ if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
+ {
+ cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
+ }
+ else
+ {
+ BFD_ASSERT (0);
+ }
+}
+
+#define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
+
+/* Code to swap in the reloc offset */
+#define SWAP_IN_RELOC_OFFSET H_GET_16
+#define SWAP_OUT_RELOC_OFFSET H_PUT_16
+
+#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
+ reloc_processing(relent, reloc, symbols, abfd, section)
+
+static void
+reloc_processing (arelent *relent,
+ struct internal_reloc *reloc,
+ asymbol **symbols,
+ bfd *abfd,
+ asection *section)
+{
+ relent->address = reloc->r_vaddr;
+ rtype2howto (relent, reloc);
+
+ if (((int) reloc->r_symndx) > 0)
+ {
+ relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
+ }
+ else
+ {
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+
+ relent->addend = reloc->r_offset;
+ relent->address -= section->vma;
+}
+
+#define BADMAG(x) MC88BADMAG(x)
+
+#ifndef bfd_pe_print_pdata
+#define bfd_pe_print_pdata NULL
+#endif
+
+#include "coffcode.h"
+
+#undef coff_write_armap
+
+CREATE_BIG_COFF_TARGET_VEC (m88kbcs_vec, "coff-m88kbcs", 0, 0, '_', NULL, COFF_SWAP_TABLE)
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-20 04:31:28 +0000