/* BFD back-end for AMD 29000 COFF binaries.
- Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001,
+ 2002, 2003
+ 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. */
+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 "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 bfd_boolean coff_a29k_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ struct internal_reloc *, struct internal_syment *, asection **));
+static bfd_boolean coff_a29k_adjust_symndx
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
+ struct internal_reloc *, bfd_boolean *));
+static void reloc_processing
+ PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
+
+#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) & 0x00ff0000) >> 8) | ((WORD) & 0xff))
#define SIGN_EXTEND_HWORD(HWORD) \
- ((HWORD) & 0x8000 ? (HWORD)|0xffff0000 : (HWORD))
+ (((HWORD) ^ 0x8000) - 0x8000)
+
+/* Provided the symbol, returns the value reffed. */
-/* 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 (bfd_is_com_section (symbol->section))
- {
- relocation = 0;
- }
- else
- {
+ relocation = 0;
+ else
relocation = symbol->value +
- symbol->section->output_section->vma +
+ symbol->section->output_section->vma +
symbol->section->output_offset;
- }
- return(relocation);
+ return relocation;
}
-/* this function is in charge of performing all the 29k relocations */
+/* This function is in charge of performing all the 29k relocations. */
static bfd_reloc_status_type
-DEFUN(a29k_reloc,(abfd, reloc_entry, symbol_in, data, input_section, output_bfd),
- bfd *abfd AND
- arelent *reloc_entry AND
- asymbol *symbol_in AND
- PTR data AND
- asection *input_section AND
- bfd *output_bfd)
+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;
{
- /* the consth relocation comes in two parts, we have to remember
- the state between calls, in these variables */
- static boolean part1_consth_active = false;
+ /* The consth relocation comes in two parts, we have to remember
+ the state between calls, in these variables. */
+ static bfd_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;
+ bfd_byte *hit_data =addr + (bfd_byte *) (data);
- if (output_bfd) {
- /* Partial linking - do nothing */
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
+ r_type = reloc_entry->howto->type;
- }
+ if (output_bfd)
+ {
+ /* Partial linking - do nothing. */
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
- if (symbol_in && (symbol_in->section == &bfd_und_section))
- {
- /* Keep the state machine happy in case we're called again */
- if (r_type == R_IHIHALF)
+ if (symbol_in != NULL
+ && bfd_is_und_section (symbol_in->section))
{
- part1_consth_active = true;
- part1_consth_value = 0;
+ /* 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;
}
- return(bfd_reloc_undefined);
- }
- 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 = false;
- 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) << 2;
- signed_value = SIGN_EXTEND_HWORD(signed_value);
- 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
+ switch (r_type)
{
- /* 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_outofrange);
- }
- 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) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"IHIHALF missing in module %s\n",
- abfd->filename);
- 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) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"byte value too large in module %s\n",
- abfd->filename);
- 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) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"hword value too large in module %s\n",
- abfd->filename);
- return(bfd_reloc_overflow);
+ 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, (bfd_vma) 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, (bfd_vma) 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)
+ {
+ *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, (bfd_vma) 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, (bfd_vma) insn, hit_data);
+ break;
+ case R_WORD:
+ insn = bfd_get_32 (abfd, hit_data);
+ insn += sym_value + reloc_entry->addend;
+ bfd_put_32 (abfd, (bfd_vma) insn, hit_data);
+ break;
+ default:
+ *error_message = _("Unrecognized reloc");
+ return bfd_reloc_dangerous;
}
- 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:
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"Unrecognized reloc type %d, in module %s\n",
- r_type,abfd->filename);
- return (bfd_reloc_dangerous);
- }
-
-
- return(bfd_reloc_ok);
+ return(bfd_reloc_ok);
}
-/* type rightshift
- size
- bitsize
- pc-relative
- bitpos
- absolute
- complain_on_overflow
- special_function
- relocation name
- partial_inplace
- src_mask
-*/
-
-/*FIXME: I'm not real sure about this table */
-#define NA 0 /* Obsolete fields, via the documentation */
-#define NAB false
-static reloc_howto_type howto_table[] =
-{
- {R_ABS, 0, 3, NA, false, NA, NAB, 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, NAB, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false},
- {R_IABS, 0, 3, NA, false, NA, NAB, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false},
- {R_ILOHALF, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
- {R_IHIHALF, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
- {R_IHCONST, 0, 3, NA, true, NA, NAB, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
- {R_BYTE, 0, 0, NA, false, NA, NAB, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false},
- {R_HWORD, 0, 1, NA, false, NA, NAB, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false},
- {R_WORD, 0, 2, NA, false, NA, NAB, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false},
-};
-#undef NA
+/*FIXME: I'm not real sure about this table. */
+static reloc_howto_type howto_table[] =
+ {
+ {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},
+ };
#define BADMAG(x) A29KBADMAG(x)
#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
reloc_processing(relent, reloc, symbols, abfd, section)
-static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) ,
- arelent *relent AND
- struct internal_reloc *reloc AND
- asymbol **symbols AND
- bfd *abfd AND
- asection *section)
+static void
+reloc_processing (relent,reloc, symbols, abfd, section)
+ arelent *relent;
+ struct internal_reloc *reloc;
+ asymbol **symbols;
+ bfd *abfd;
+ asection *section;
{
- relent->address = reloc->r_vaddr;
- relent->howto = howto_table + reloc->r_type;
- if (reloc->r_type == R_IHCONST)
- {
- relent->addend = reloc->r_symndx;
- relent->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr;
+ 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
+ else
{
asymbol *ptr;
- relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
- ptr = *(relent->sym_ptr_ptr);
+ relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
- if (ptr
- && bfd_asymbol_bfd(ptr) == abfd
+ ptr = *(relent->sym_ptr_ptr);
- && ((ptr->flags & BSF_OLD_COMMON)== 0))
- {
- relent->addend = 0;
- }
+ if (ptr
+ && bfd_asymbol_bfd(ptr) == abfd
+ && ((ptr->flags & BSF_OLD_COMMON) == 0))
+ relent->addend = 0;
else
- {
- relent->addend = 0;
- }
+ 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 ();
+ }
}
-#include "coffcode.h"
+/* The reloc processing routine for the optimized COFF linker. */
+
+static bfd_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;
+{
+ struct internal_reloc *rel;
+ struct internal_reloc *relend;
+ bfd_boolean hihalf;
+ bfd_vma hihalf_val;
+
+ /* If we are performing a relocatable link, we don't need to do a
+ thing. The caller will take care of adjusting the reloc
+ addresses and symbol indices. */
+ if (info->relocatable)
+ 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;
+ bfd_boolean overflow;
+ unsigned long insn;
+ long signed_value;
+ unsigned long unsigned_value;
+ bfd_reloc_status_type rstat;
+
+ symndx = rel->r_symndx;
+ loc = contents + rel->r_vaddr - input_section->vma;
+
+ if (symndx == -1 || rel->r_type == R_IHCONST)
+ h = NULL;
+ else
+ h = obj_coff_sym_hashes (input_bfd)[symndx];
+
+ 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, TRUE)))
+ 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. */
+
+ if (signed_value == - (long) (rel->r_vaddr - input_section->vma))
+ signed_value = 0;
+
+ /* 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, (bfd_vma) 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. */
-bfd_target a29kcoff_big_vec =
+static bfd_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;
+ bfd_boolean *adjustedp;
{
- "coff-a29k-big", /* name */
- bfd_target_coff_flavour,
- true, /* data byte order is big */
- true, /* header byte order is big */
-
- (HAS_RELOC | EXEC_P | /* object flags */
- HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
-
- (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */
- | SEC_LOAD | SEC_RELOC
- | SEC_READONLY ),
- '_', /* leading underscore */
- '/', /* ar_pad_char */
- 15, /* ar_max_namelen */
- 2, /* minimum section alignment */
- /* data */
- _do_getb64, _do_getb_signed_64, _do_putb64,
- _do_getb32, _do_getb_signed_32, _do_putb32,
- _do_getb16, _do_getb_signed_16, _do_putb16,
- /* hdrs */
- _do_getb64, _do_getb_signed_64, _do_putb64,
- _do_getb32, _do_getb_signed_32, _do_putb32,
- _do_getb16, _do_getb_signed_16, _do_putb16,
-
- {
-
- _bfd_dummy_target,
- coff_object_p,
- bfd_generic_archive_p,
- _bfd_dummy_target
- },
- {
- bfd_false,
- coff_mkobject,
- _bfd_generic_mkarchive,
- bfd_false
- },
- {
- bfd_false,
- coff_write_object_contents,
- _bfd_write_archive_contents,
- bfd_false
- },
-
- JUMP_TABLE(coff),
- COFF_SWAP_TABLE
- };
+ 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, COFF_SWAP_TABLE)
projects / thirdparty / binutils-gdb.git / blobdiff