-/* BFD back-end for Intel 860 COFF files.
+/* BFD back-end for Intel i860 COFF files.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Created mostly by substituting "860" for "386" in coff-i386.c
#include "libcoff.h"
-static bfd_reloc_status_type coff_i860_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static reloc_howto_type *coff_i860_rtype_to_howto
- PARAMS ((bfd *, asection *, struct internal_reloc *,
- struct coff_link_hash_entry *, struct internal_syment *,
- bfd_vma *));
-static const bfd_target * i3coff_object_p PARAMS ((bfd *));
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
/* The page size is a guess based on ELF. */
reloc type to make any required adjustments. */
static bfd_reloc_status_type
-coff_i860_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section ATTRIBUTE_UNUSED;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
+coff_i860_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section ATTRIBUTE_UNUSED,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
{
symvalue diff;
return bfd_reloc_continue;
}
+/* This is just a temporary measure until we teach bfd to generate
+ these relocations. */
+
+static bfd_reloc_status_type
+coff_i860_reloc_nyi (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section ATTRIBUTE_UNUSED,
+ bfd *output_bfd ATTRIBUTE_UNUSED,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ reloc_howto_type *howto = reloc_entry->howto;
+ fprintf (stderr, _("Relocation `%s' not yet implemented\n"), howto->name);
+ return bfd_reloc_notsupported;
+}
+
#ifndef PCRELOFFSET
#define PCRELOFFSET FALSE
#endif
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
- PCRELOFFSET) /* pcrel_offset */
+ PCRELOFFSET), /* pcrel_offset */
+ EMPTY_HOWTO (0x15),
+ EMPTY_HOWTO (0x16),
+ EMPTY_HOWTO (0x17),
+ EMPTY_HOWTO (0x18),
+ EMPTY_HOWTO (0x19),
+ EMPTY_HOWTO (0x1a),
+ EMPTY_HOWTO (0x1b),
+ HOWTO (COFF860_R_PAIR, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc_nyi, /* special_function */
+ "PAIR", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ EMPTY_HOWTO (0x1d),
+ HOWTO (COFF860_R_HIGH, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc, /* special_function */
+ "HIGH", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_LOW0, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc, /* special_function */
+ "LOW0", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_LOW1, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc, /* special_function */
+ "LOW1", /* name */
+ FALSE, /* partial_inplace */
+ 0xfffe, /* src_mask */
+ 0xfffe, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_LOW2, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc, /* special_function */
+ "LOW2", /* name */
+ FALSE, /* partial_inplace */
+ 0xfffc, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_LOW3, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc, /* special_function */
+ "LOW3", /* name */
+ FALSE, /* partial_inplace */
+ 0xfff8, /* src_mask */
+ 0xfff8, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_LOW4, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc, /* special_function */
+ "LOW4", /* name */
+ FALSE, /* partial_inplace */
+ 0xfff0, /* src_mask */
+ 0xfff0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_SPLIT0, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc_nyi, /* special_function */
+ "SPLIT0", /* name */
+ FALSE, /* partial_inplace */
+ 0x1f07ff, /* src_mask */
+ 0x1f07ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_SPLIT1, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc_nyi, /* special_function */
+ "SPLIT1", /* name */
+ FALSE, /* partial_inplace */
+ 0x1f07fe, /* src_mask */
+ 0x1f07fe, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_SPLIT2, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc_nyi, /* special_function */
+ "SPLIT2", /* name */
+ FALSE, /* partial_inplace */
+ 0x1f07fc, /* src_mask */
+ 0x1f07fc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_HIGHADJ, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_i860_reloc_nyi, /* special_function */
+ "HIGHADJ", /* name */
+ FALSE, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+ HOWTO (COFF860_R_BRADDR, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_i860_reloc_nyi, /* special_function */
+ "BRADDR", /* name */
+ FALSE, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ TRUE) /* pcrel_offset */
};
-/* Turn a howto into a reloc nunmber */
+/* Turn a howto into a reloc number. */
#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
#define BADMAG(x) I860BADMAG(x)
#define I860 1 /* Customize coffcode.h */
-#define RTYPE2HOWTO(cache_ptr, dst) \
- (cache_ptr)->howto = howto_table + (dst)->r_type;
+#define RTYPE2HOWTO(cache_ptr, dst) \
+ ((cache_ptr)->howto = \
+ ((dst)->r_type < sizeof (howto_table) / sizeof (howto_table[0]) \
+ ? howto_table + (dst)->r_type \
+ : NULL))
/* For 860 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
library. On some other COFF targets STYP_BSS is normally
FIXME: This macro refers to symbols and asect; these are from the
calling function, not the macro arguments. */
+/* FIXME: This was copied from the i386 version originally but
+ appears to be wrong for i860. For now we'll do nothing. */
+#if 0
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
{ \
coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
if (ptr && howto_table[reloc.r_type].pc_relative) \
cache_ptr->addend += asect->vma; \
}
+#else
+#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)
+#endif
/* We use the special COFF backend linker. */
#define coff_relocate_section _bfd_coff_generic_relocate_section
static reloc_howto_type *
-coff_i860_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
- bfd *abfd ATTRIBUTE_UNUSED;
- asection *sec;
- struct internal_reloc *rel;
- struct coff_link_hash_entry *h;
- struct internal_syment *sym;
- bfd_vma *addendp;
+coff_i860_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec,
+ struct internal_reloc *rel,
+ struct coff_link_hash_entry *h,
+ struct internal_syment *sym,
+ bfd_vma *addendp)
{
reloc_howto_type *howto;
+ if (rel->r_type > sizeof (howto_table) / sizeof (howto_table[0]))
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+ }
+
howto = howto_table + rel->r_type;
if (howto->pc_relative)
BFD_ASSERT (h != NULL);
/* I think we *do* want to bypass this. If we don't, I have seen some data
- parameters get the wrong relcation address. If I link two versions
+ parameters get the wrong relocation address. If I link two versions
with and without this section bypassed and then do a binary comparison,
the addresses which are different can be looked up in the map. The
case in which this section has been bypassed has addresses which correspond
return howto;
}
-#define coff_rtype_to_howto coff_i860_rtype_to_howto
+static reloc_howto_type *
+coff_i860_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ switch (code)
+ {
+ case BFD_RELOC_32:
+ return howto_table + R_DIR32;
+ case BFD_RELOC_860_PC26:
+ return howto_table + COFF860_R_BRADDR;
+ case BFD_RELOC_860_PC16:
+ /* ??? How to handle PC16 for COFF? SPLIT0 is close for now. */
+ return howto_table + COFF860_R_SPLIT0;
+ case BFD_RELOC_860_LOW0:
+ return howto_table + COFF860_R_LOW0;
+ case BFD_RELOC_860_SPLIT0:
+ return howto_table + COFF860_R_SPLIT0;
+ case BFD_RELOC_860_LOW1:
+ return howto_table + COFF860_R_LOW1;
+ case BFD_RELOC_860_SPLIT1:
+ return howto_table + COFF860_R_SPLIT1;
+ case BFD_RELOC_860_LOW2:
+ return howto_table + COFF860_R_LOW2;
+ case BFD_RELOC_860_SPLIT2:
+ return howto_table + COFF860_R_SPLIT2;
+ case BFD_RELOC_860_LOW3:
+ return howto_table + COFF860_R_LOW3;
+ case BFD_RELOC_860_HIGHADJ:
+ return howto_table + COFF860_R_HIGHADJ;
+ case BFD_RELOC_860_HIGH:
+ return howto_table + COFF860_R_HIGH;
+ default:
+ BFD_FAIL ();
+ return 0;
+ }
+}
+
+/* This is called from coff_slurp_reloc_table for each relocation
+ entry. This special handling is due to the `PAIR' relocation
+ which has a different meaning for the `r_symndx' field. */
+
+static void
+i860_reloc_processing (arelent *cache_ptr, struct internal_reloc *dst,
+ asymbol **symbols, bfd *abfd, asection *asect)
+{
+ if (dst->r_type == COFF860_R_PAIR)
+ {
+ /* Handle the PAIR relocation specially. */
+ cache_ptr->howto = howto_table + dst->r_type;
+ cache_ptr->address = dst->r_vaddr;
+ cache_ptr->addend = dst->r_symndx;
+ cache_ptr->sym_ptr_ptr= bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+ else
+ {
+ /* For every other relocation, do exactly what coff_slurp_reloc_table
+ would do (which this code is taken directly from). */
+ asymbol *ptr = NULL;
+ cache_ptr->address = dst->r_vaddr;
+
+ if (dst->r_symndx != -1)
+ {
+ if (dst->r_symndx < 0 || dst->r_symndx >= obj_conv_table_size (abfd))
+ {
+ (*_bfd_error_handler)
+ (_("%s: warning: illegal symbol index %ld in relocs"),
+ bfd_archive_filename (abfd), dst->r_symndx);
+ cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ ptr = NULL;
+ }
+ else
+ {
+ cache_ptr->sym_ptr_ptr = (symbols
+ + obj_convert (abfd)[dst->r_symndx]);
+ ptr = *(cache_ptr->sym_ptr_ptr);
+ }
+ }
+ else
+ {
+ cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ ptr = NULL;
+ }
+
+ /* The symbols definitions that we have read in have been
+ relocated as if their sections started at 0. But the offsets
+ refering to the symbols in the raw data have not been
+ modified, so we have to have a negative addend to compensate.
+
+ Note that symbols which used to be common must be left alone. */
+
+ /* Calculate any reloc addend by looking at the symbol. */
+ CALC_ADDEND (abfd, ptr, (*dst), cache_ptr);
+
+ cache_ptr->address -= asect->vma;
+
+ /* Fill in the cache_ptr->howto field from dst->r_type. */
+ RTYPE2HOWTO (cache_ptr, dst);
+ }
+}
+\f
+#define coff_rtype_to_howto coff_i860_rtype_to_howto
+#define coff_bfd_reloc_type_lookup coff_i860_reloc_type_lookup
+
+#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
+ i860_reloc_processing (relent, reloc, symbols, abfd, section)
#include "coffcode.h"
static const bfd_target *
-i3coff_object_p(a)
- bfd *a;
+i3coff_object_p(bfd *a)
{
return coff_object_p (a);
}
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