-/* AMD 29000 COFF back-end for BFD.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+/* BFD back-end for AMD 29000 COFF binaries.
+ Copyright 1990, 91, 92, 93, 94, 95, 97, 98, 1999
+ Free Software Foundation, Inc.
Contributed by David Wood at New York University 7/8/91.
This file is part of BFD, the Binary File Descriptor library.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/* $Id$ */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define A29K 1
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
-#include "obstack.h"
-#include "amdcoff.h"
-#include "internalcoff.h"
+#include "coff/a29k.h"
+#include "coff/internal.h"
#include "libcoff.h"
+static long get_symbol_value PARAMS ((asymbol *));
+static bfd_reloc_status_type a29k_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static boolean coff_a29k_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ struct internal_reloc *, struct internal_syment *, asection **));
+static boolean coff_a29k_adjust_symndx
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
+ struct internal_reloc *, boolean *));
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
+
#define INSERT_HWORD(WORD,HWORD) \
- (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
-#define EXTRACT_HWORD(WORD) (((WORD) & 0x00ff0000) >> 8) | ((WORD) & 0xff)
+ (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
+#define EXTRACT_HWORD(WORD) \
+ ((((WORD) & 0x00ff0000) >> 8) | ((WORD)& 0xff))
+#define SIGN_EXTEND_HWORD(HWORD) \
+ ((HWORD) & 0x8000 ? (HWORD)|(~0xffffL) : (HWORD))
/* Provided the symbol, returns the value reffed */
-static long
-get_symbol_value(symbol)
-asymbol *symbol;
+static long
+get_symbol_value (symbol)
+ asymbol *symbol;
{
long relocation = 0;
- if (symbol != (asymbol *)NULL) {
- if (symbol->flags & BSF_FORT_COMM) {
- relocation = 0;
- } else {
- relocation = symbol->value;
- }
- if (symbol->section != (asection *)NULL) {
- relocation += symbol->section->output_section->vma +
- symbol->section->output_offset;
- }
+ if (bfd_is_com_section (symbol->section))
+ {
+ relocation = 0;
}
+ else
+ {
+ relocation = symbol->value +
+ symbol->section->output_section->vma +
+ symbol->section->output_offset;
+ }
+
return(relocation);
}
+/* this function is in charge of performing all the 29k relocations */
+
static bfd_reloc_status_type
-a29k_reloc(abfd, reloc_entry, symbol_in, data, input_section)
-bfd *abfd;
-arelent *reloc_entry;
-asymbol *symbol_in;
-unsigned char *data;
-asection *input_section;
+a29k_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol_in;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
{
- static unsigned long part1_consth_active=0;
- static unsigned long part1_consth_value;
- unsigned long insn, value, sym_value;
- unsigned short r_type;
- /* bfd_reloc_status_type result;*/
- /* coff_symbol_type *cs = coffsymbol(symbol_in);*/
+ /* the consth relocation comes in two parts, we have to remember
+ the state between calls, in these variables */
+ static boolean part1_consth_active = false;
+ static unsigned long part1_consth_value;
+
+ unsigned long insn;
+ unsigned long sym_value;
+ unsigned long unsigned_value;
+ unsigned short r_type;
+ long signed_value;
+
+ unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
+ bfd_byte *hit_data =addr + (bfd_byte *)(data);
- r_type = reloc_entry->howto->type;
-
- /* FIXME: Do we need to check for partial linking here */
- if (symbol_in && (symbol_in->flags & BSF_UNDEFINED)) {
- /* Keep the state machine happy in case we're called again */
- if (r_type == R_IHIHALF) {
- part1_consth_active = 1;
- part1_consth_value = 0;
- }
- return(bfd_reloc_undefined);
- }
+ r_type = reloc_entry->howto->type;
- if ((part1_consth_active) && (r_type != R_IHCONST)) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename);
- part1_consth_active = 0;
- return(bfd_reloc_dangerous);
+ if (output_bfd) {
+ /* Partial linking - do nothing */
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+
+ }
+
+ if (symbol_in != NULL
+ && bfd_is_und_section (symbol_in->section))
+ {
+ /* Keep the state machine happy in case we're called again */
+ if (r_type == R_IHIHALF)
+ {
+ part1_consth_active = true;
+ part1_consth_value = 0;
}
+ return(bfd_reloc_undefined);
+ }
- insn = bfd_get_32(abfd, data + reloc_entry->address);
- sym_value = get_symbol_value(symbol_in);
-
- switch (r_type) {
- case R_IREL:
- /* We don't want to use the value already in the offset..
- The field isn't big enought to hold the full range of values.
- Will the break anything ? Steve@cygnus */
- value = 0; /*EXTRACT_HWORD(insn) << 2;*/
- value += sym_value + reloc_entry->addend;
- if (0 && value <= 0x3ffff) { /* Absolute jmp/call */
- insn |= 0x01000000; /* Make it absolute */
- /* FIXME: Should we change r_type to R_IABS */
- } else {
- /* Relative jmp/call, so subtract from the value the
- address of the place we're coming from */
- value -= reloc_entry->address +
- input_section->output_section->vma +
- input_section->output_offset;
- if (value > 0x3ffff) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"Jmp/call too far; to %s from %s\n",
- symbol_in->name,abfd->filename);
- return(bfd_reloc_outofrange);
- }
- }
- value >>= 2;
- insn = INSERT_HWORD(insn,value);
- break;
- case R_ILOHALF:
- value = EXTRACT_HWORD(insn);
- value += sym_value + reloc_entry->addend;
- insn = INSERT_HWORD(insn,value);
- break;
- case R_IHIHALF: /* consth, part 1 */
- /* Just get the symbol value that is referenced */
- part1_consth_active = 1;
- part1_consth_value = sym_value + reloc_entry->addend;
- return(bfd_reloc_ok); /* Don't modify insn until R_IHCONST */
- break;
- case R_IHCONST: /* consth, part 2 */
- /* Now relocate the reference */
- if (!part1_consth_active) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"IHIHALF missing in module %s\n",
- abfd->filename);
- part1_consth_active = 0;
- return(bfd_reloc_dangerous);
- }
- /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
- value = (unsigned int)reloc_entry->addend; /* r_symndx */
- value += part1_consth_value;
- value >>= 16;
- insn = INSERT_HWORD(insn,value);
- part1_consth_active = 0;
- break;
- case R_BYTE:
- value = (insn >> 24) + sym_value + reloc_entry->addend;
- if (value & 0xffffff00) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"byte value too large in module %s\n",
- abfd->filename);
- return(bfd_reloc_overflow);
- }
- insn = (insn & 0x00ffffff) | (value << 24);
- break;
- case R_HWORD:
- value = (insn >> 16) + sym_value + reloc_entry->addend;
- if (value & 0xffff0000) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"hword value too large in module %s\n",
- abfd->filename);
- return(bfd_reloc_overflow);
- }
- insn = (insn & 0x0000ffff) | (value<<16);
- break;
- case R_WORD:
- insn += sym_value + reloc_entry->addend;
- break;
- default:
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"Unrecognized reloc type %d, in module %s\n",
- r_type,abfd->filename);
- return (bfd_reloc_dangerous);
+ if ((part1_consth_active) && (r_type != R_IHCONST))
+ {
+ part1_consth_active = false;
+ *error_message = (char *) _("Missing IHCONST");
+ return(bfd_reloc_dangerous);
+ }
+
+
+ sym_value = get_symbol_value(symbol_in);
+
+ switch (r_type)
+ {
+ case R_IREL:
+ insn = bfd_get_32(abfd, hit_data);
+ /* Take the value in the field and sign extend it */
+ signed_value = EXTRACT_HWORD(insn);
+ signed_value = SIGN_EXTEND_HWORD(signed_value);
+ signed_value <<= 2;
+
+ /* See the note on the R_IREL reloc in coff_a29k_relocate_section. */
+ if (signed_value == - (long) reloc_entry->address)
+ signed_value = 0;
+
+ signed_value += sym_value + reloc_entry->addend;
+ if ((signed_value & ~0x3ffff) == 0)
+ { /* Absolute jmp/call */
+ insn |= (1<<24); /* Make it absolute */
+ /* FIXME: Should we change r_type to R_IABS */
+ }
+ else
+ {
+ /* Relative jmp/call, so subtract from the value the
+ address of the place we're coming from */
+ signed_value -= (reloc_entry->address
+ + input_section->output_section->vma
+ + input_section->output_offset);
+ if (signed_value>0x1ffff || signed_value<-0x20000)
+ return(bfd_reloc_overflow);
}
+ signed_value >>= 2;
+ insn = INSERT_HWORD(insn, signed_value);
+ bfd_put_32(abfd, insn ,hit_data);
+ break;
+ case R_ILOHALF:
+ insn = bfd_get_32(abfd, hit_data);
+ unsigned_value = EXTRACT_HWORD(insn);
+ unsigned_value += sym_value + reloc_entry->addend;
+ insn = INSERT_HWORD(insn, unsigned_value);
+ bfd_put_32(abfd, insn, hit_data);
+ break;
+ case R_IHIHALF:
+ insn = bfd_get_32(abfd, hit_data);
+ /* consth, part 1
+ Just get the symbol value that is referenced */
+ part1_consth_active = true;
+ part1_consth_value = sym_value + reloc_entry->addend;
+ /* Don't modify insn until R_IHCONST */
+ break;
+ case R_IHCONST:
+ insn = bfd_get_32(abfd, hit_data);
+ /* consth, part 2
+ Now relocate the reference */
+ if (part1_consth_active == false) {
+ *error_message = (char *) _("Missing IHIHALF");
+ return(bfd_reloc_dangerous);
+ }
+ /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
+ unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/
+ unsigned_value += reloc_entry->addend; /* r_symndx */
+ unsigned_value += part1_consth_value;
+ unsigned_value = unsigned_value >> 16;
+ insn = INSERT_HWORD(insn, unsigned_value);
+ part1_consth_active = false;
+ bfd_put_32(abfd, insn, hit_data);
+ break;
+ case R_BYTE:
+ insn = bfd_get_8(abfd, hit_data);
+ unsigned_value = insn + sym_value + reloc_entry->addend;
+ if (unsigned_value & 0xffffff00)
+ return(bfd_reloc_overflow);
+ bfd_put_8(abfd, unsigned_value, hit_data);
+ break;
+ case R_HWORD:
+ insn = bfd_get_16(abfd, hit_data);
+ unsigned_value = insn + sym_value + reloc_entry->addend;
+ if (unsigned_value & 0xffff0000)
+ return(bfd_reloc_overflow);
+ bfd_put_16(abfd, insn, hit_data);
+ break;
+ case R_WORD:
+ insn = bfd_get_32(abfd, hit_data);
+ insn += sym_value + reloc_entry->addend;
+ bfd_put_32(abfd, insn, hit_data);
+ break;
+ default:
+ *error_message = _("Unrecognized reloc");
+ return (bfd_reloc_dangerous);
+ }
- bfd_put_32(abfd, insn, data+reloc_entry->address);
- return(bfd_reloc_ok);
+
+ return(bfd_reloc_ok);
}
/* type rightshift
*/
/*FIXME: I'm not real sure about this table */
-#define NA 0 /* Obsolete fields, via the documentation */
static reloc_howto_type howto_table[] =
{
- {R_ABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
- {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10},
- {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
- {21}, {22}, {23},
- {R_IREL, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false},
- {R_IABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false},
- {R_ILOHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
- {R_IHIHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
- {R_IHCONST, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
- {R_BYTE, 0, 0, NA, false, NA, NA, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false},
- {R_HWORD, 0, 1, NA, false, NA, NA, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false},
- {R_WORD, 0, 2, NA, false, NA, NA, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false},
+ {R_ABS, 0, 3, 32, false, 0, complain_overflow_bitfield,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
+ EMPTY_HOWTO (1),
+ EMPTY_HOWTO (2),
+ EMPTY_HOWTO (3),
+ EMPTY_HOWTO (4),
+ EMPTY_HOWTO (5),
+ EMPTY_HOWTO (6),
+ EMPTY_HOWTO (7),
+ EMPTY_HOWTO (8),
+ EMPTY_HOWTO (9),
+ EMPTY_HOWTO (10),
+ EMPTY_HOWTO (11),
+ EMPTY_HOWTO (12),
+ EMPTY_HOWTO (13),
+ EMPTY_HOWTO (14),
+ EMPTY_HOWTO (15),
+ EMPTY_HOWTO (16),
+ EMPTY_HOWTO (17),
+ EMPTY_HOWTO (18),
+ EMPTY_HOWTO (19),
+ EMPTY_HOWTO (20),
+ EMPTY_HOWTO (21),
+ EMPTY_HOWTO (22),
+ EMPTY_HOWTO (23),
+ {R_IREL, 0, 3, 32, true, 0, complain_overflow_signed,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false},
+ {R_IABS, 0, 3, 32, false, 0, complain_overflow_bitfield, a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false},
+ {R_ILOHALF, 0, 3, 16, true, 0, complain_overflow_signed, a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
+ {R_IHIHALF, 0, 3, 16, true, 16, complain_overflow_signed, a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
+ {R_IHCONST, 0, 3, 16, true, 0, complain_overflow_signed, a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
+ {R_BYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false},
+ {R_HWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false},
+ {R_WORD, 0, 2, 32, false, 0, complain_overflow_bitfield, a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false},
};
-#undef NA
#define BADMAG(x) A29KBADMAG(x)
-#include "coffcode.h"
+#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
+ reloc_processing(relent, reloc, symbols, abfd, section)
+
+static void
+reloc_processing (relent,reloc, symbols, abfd, section)
+ arelent *relent;
+ struct internal_reloc *reloc;
+ asymbol **symbols;
+ bfd *abfd;
+ asection *section;
+{
+ static bfd_vma ihihalf_vaddr = (bfd_vma) -1;
+
+ relent->address = reloc->r_vaddr;
+ relent->howto = howto_table + reloc->r_type;
+ if (reloc->r_type == R_IHCONST)
+ {
+ /* The address of an R_IHCONST should always be the address of
+ the immediately preceding R_IHIHALF. relocs generated by gas
+ are correct, but relocs generated by High C are different (I
+ can't figure out what the address means for High C). We can
+ handle both gas and High C by ignoring the address here, and
+ simply reusing the address saved for R_IHIHALF. */
+ if (ihihalf_vaddr == (bfd_vma) -1)
+ abort ();
+ relent->address = ihihalf_vaddr;
+ ihihalf_vaddr = (bfd_vma) -1;
+ relent->addend = reloc->r_symndx;
+ relent->sym_ptr_ptr= bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+ else
+ {
+ asymbol *ptr;
+ relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
+
+ ptr = *(relent->sym_ptr_ptr);
+
+ if (ptr
+ && bfd_asymbol_bfd(ptr) == abfd
+
+ && ((ptr->flags & BSF_OLD_COMMON)== 0))
+ {
+ relent->addend = 0;
+ }
+ else
+ {
+ relent->addend = 0;
+ }
+ relent->address-= section->vma;
+ if (reloc->r_type == R_IHIHALF)
+ ihihalf_vaddr = relent->address;
+ else if (ihihalf_vaddr != (bfd_vma) -1)
+ abort ();
+ }
+}
+
+/* The reloc processing routine for the optimized COFF linker. */
-bfd_target a29kcoff_big_vec =
+static boolean
+coff_a29k_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, syms, sections)
+ bfd *output_bfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ struct internal_reloc *relocs;
+ struct internal_syment *syms;
+ asection **sections;
{
- "coff-a29k-big", /* name */
- bfd_target_coff_flavour,
- true, /* data byte order is big */
- true, /* header byte order is big */
+ struct internal_reloc *rel;
+ struct internal_reloc *relend;
+ boolean hihalf;
+ bfd_vma hihalf_val;
+
+ /* If we are performing a relocateable link, we don't need to do a
+ thing. The caller will take care of adjusting the reloc
+ addresses and symbol indices. */
+ if (info->relocateable)
+ return true;
+
+ hihalf = false;
+ hihalf_val = 0;
+
+ rel = relocs;
+ relend = rel + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ long symndx;
+ bfd_byte *loc;
+ struct coff_link_hash_entry *h;
+ struct internal_syment *sym;
+ asection *sec;
+ bfd_vma val;
+ boolean overflow;
+ unsigned long insn;
+ long signed_value;
+ unsigned long unsigned_value;
+ bfd_reloc_status_type rstat;
- (HAS_RELOC | EXEC_P | /* object flags */
- HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
+ symndx = rel->r_symndx;
+ loc = contents + rel->r_vaddr - input_section->vma;
- (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */
- | SEC_LOAD | SEC_RELOC
- | SEC_READONLY ),
- '/', /* ar_pad_char */
- 15, /* ar_max_namelen */
+ if (symndx == -1 || rel->r_type == R_IHCONST)
+ h = NULL;
+ else
+ h = obj_coff_sym_hashes (input_bfd)[symndx];
- 3, /* minimum section alignment */
-_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
-_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
+ sym = NULL;
+ sec = NULL;
+ val = 0;
+ /* An R_IHCONST reloc does not have a symbol. Instead, the
+ symbol index is an addend. R_IHCONST is always used in
+ conjunction with R_IHHALF. */
+ if (rel->r_type != R_IHCONST)
+ {
+ if (h == NULL)
+ {
+ if (symndx == -1)
+ sec = bfd_abs_section_ptr;
+ else
+ {
+ sym = syms + symndx;
+ sec = sections[symndx];
+ val = (sec->output_section->vma
+ + sec->output_offset
+ + sym->n_value
+ - sec->vma);
+ }
+ }
+ else
+ {
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ sec = h->root.u.def.section;
+ val = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+
+ if (hihalf)
+ {
+ if (! ((*info->callbacks->reloc_dangerous)
+ (info, _("missing IHCONST reloc"), input_bfd,
+ input_section, rel->r_vaddr - input_section->vma)))
+ return false;
+ hihalf = false;
+ }
+ }
+
+ overflow = false;
+
+ switch (rel->r_type)
+ {
+ default:
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+
+ case R_IREL:
+ insn = bfd_get_32 (input_bfd, loc);
+
+ /* Extract the addend. */
+ signed_value = EXTRACT_HWORD (insn);
+ signed_value = SIGN_EXTEND_HWORD (signed_value);
+ signed_value <<= 2;
+
+ /* Unfortunately, there are two different versions of COFF
+ a29k. In the original AMD version, the value stored in
+ the field for the R_IREL reloc is a simple addend. In
+ the GNU version, the value is the negative of the address
+ of the reloc within section. We try to cope here by
+ assuming the AMD version, unless the addend is exactly
+ the negative of the address; in the latter case we assume
+ the GNU version. This means that something like
+ .text
+ nop
+ jmp i-4
+ will fail, because the addend of -4 will happen to equal
+ the negative of the address within the section. The
+ compiler will never generate code like this.
+
+ At some point in the future we may want to take out this
+ check. */
- {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
- bfd_generic_archive_p, _bfd_dummy_target},
- {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
- bfd_false},
- {bfd_false, coff_write_object_contents, /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
+ if (signed_value == - (long) (rel->r_vaddr - input_section->vma))
+ signed_value = 0;
- JUMP_TABLE(coff),
- COFF_SWAP_TABLE
- };
+ /* Determine the destination of the jump. */
+ signed_value += val;
+
+ if ((signed_value & ~0x3ffff) == 0)
+ {
+ /* We can use an absolute jump. */
+ insn |= (1 << 24);
+ }
+ else
+ {
+ /* Make the destination PC relative. */
+ signed_value -= (input_section->output_section->vma
+ + input_section->output_offset
+ + (rel->r_vaddr - input_section->vma));
+ if (signed_value > 0x1ffff || signed_value < - 0x20000)
+ {
+ overflow = true;
+ signed_value = 0;
+ }
+ }
+
+ /* Put the adjusted value back into the instruction. */
+ signed_value >>= 2;
+ insn = INSERT_HWORD (insn, signed_value);
+
+ bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
+
+ break;
+
+ case R_ILOHALF:
+ insn = bfd_get_32 (input_bfd, loc);
+ unsigned_value = EXTRACT_HWORD (insn);
+ unsigned_value += val;
+ insn = INSERT_HWORD (insn, unsigned_value);
+ bfd_put_32 (input_bfd, insn, loc);
+ break;
+
+ case R_IHIHALF:
+ /* Save the value for the R_IHCONST reloc. */
+ hihalf = true;
+ hihalf_val = val;
+ break;
+
+ case R_IHCONST:
+ if (! hihalf)
+ {
+ if (! ((*info->callbacks->reloc_dangerous)
+ (info, _("missing IHIHALF reloc"), input_bfd,
+ input_section, rel->r_vaddr - input_section->vma)))
+ return false;
+ hihalf_val = 0;
+ }
+
+ insn = bfd_get_32 (input_bfd, loc);
+ unsigned_value = rel->r_symndx + hihalf_val;
+ unsigned_value >>= 16;
+ insn = INSERT_HWORD (insn, unsigned_value);
+ bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
+
+ hihalf = false;
+
+ break;
+
+ case R_BYTE:
+ case R_HWORD:
+ case R_WORD:
+ rstat = _bfd_relocate_contents (howto_table + rel->r_type,
+ input_bfd, val, loc);
+ if (rstat == bfd_reloc_overflow)
+ overflow = true;
+ else if (rstat != bfd_reloc_ok)
+ abort ();
+ break;
+ }
+
+ if (overflow)
+ {
+ const char *name;
+ char buf[SYMNMLEN + 1];
+
+ if (symndx == -1)
+ name = "*ABS*";
+ else if (h != NULL)
+ name = h->root.root.string;
+ else if (sym == NULL)
+ name = "*unknown*";
+ else if (sym->_n._n_n._n_zeroes == 0
+ && sym->_n._n_n._n_offset != 0)
+ name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
+ else
+ {
+ strncpy (buf, sym->_n._n_name, SYMNMLEN);
+ buf[SYMNMLEN] = '\0';
+ name = buf;
+ }
+
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto_table[rel->r_type].name, (bfd_vma) 0,
+ input_bfd, input_section,
+ rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+#define coff_relocate_section coff_a29k_relocate_section
+
+/* We don't want to change the symndx of a R_IHCONST reloc, since it
+ is actually an addend, not a symbol index at all. */
+
+/*ARGSUSED*/
+static boolean
+coff_a29k_adjust_symndx (obfd, info, ibfd, sec, irel, adjustedp)
+ bfd *obfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ bfd *ibfd ATTRIBUTE_UNUSED;
+ asection *sec ATTRIBUTE_UNUSED;
+ struct internal_reloc *irel;
+ boolean *adjustedp;
+{
+ if (irel->r_type == R_IHCONST)
+ *adjustedp = true;
+ else
+ *adjustedp = false;
+ return true;
+}
+
+#define coff_adjust_symndx coff_a29k_adjust_symndx
+
+#include "coffcode.h"
+CREATE_BIG_COFF_TARGET_VEC (a29kcoff_big_vec, "coff-a29k-big", 0, SEC_READONLY, '_', NULL)
projects / external / binutils.git / blobdiff