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2003-08-23 Jason Eckhardt <jle@rice.edu>

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[bfd/ChangeLog]
        * coff-i860.c (coff_i860_reloc_nyi): New function.
	(howto_table): Add entries for relocations PAIR, HIGHADJ, HIGH,
	LOWn, SPLITn, and BRADDR.
	(RTYPE2HOWTO): Check that the r_type is within the howto_table
	before trying to access the entry.
	(coff_i860_rtype_to_howto): Likewise.
	(coff_i860_reloc_type_lookup): New function.
	(i860_reloc_processing): New function.
	(coff_bfd_reloc_type_lookup): Define macro.
	(RELOC_PROCESSING): Define macro.
	Minor formatting adjustments.

[include/coff/ChangeLog]
	* coff/i860.h (COFF860_R_PAIR, COFF860_R_LOW0, COFF860_R_LOW1,
	COFF860_R_LOW2, COFF860_R_LOW3, COFF860_R_LOW4, COFF860_R_SPLIT0,
	COFF860_R_SPLIT1, COFF860_R_SPLIT2, COFF860_R_HIGHADJ,
	COFF860_R_BRADDR): Define new relocation constants and document.
	Minor formatting adjustments.
This commit is contained in:
Jason Eckhardt
2003-08-23 23:00:09 +00:00
parent 0485f6ad30
commit c28b1c2869
4 changed files with 352 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

305
bfd/coff-i860.c
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@@ -1,4 +1,4 @@
/* 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
@@ -126,6 +126,22 @@ coff_i860_reloc (bfd *abfd,
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);
}
#ifndef PCRELOFFSET
#define PCRELOFFSET FALSE
#endif
@@ -249,17 +265,184 @@ static reloc_howto_type howto_table[] =
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
@@ -313,6 +496,12 @@ coff_i860_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
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)
@@ -346,7 +535,111 @@ coff_i860_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
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);
}
}
#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"