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-rw-r--r--binutils-2.25/bfd/coff-or32.c629
1 files changed, 629 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/coff-or32.c b/binutils-2.25/bfd/coff-or32.c
new file mode 100644
index 00000000..18835e13
--- /dev/null
+++ b/binutils-2.25/bfd/coff-or32.c
@@ -0,0 +1,629 @@
+/* BFD back-end for OpenRISC 1000 COFF binaries.
+ Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2011, 2012
+ Free Software Foundation, Inc.
+ Contributed by Ivan Guzvinec <ivang@opencores.org>
+
+ 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 OR32 1
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "coff/or32.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+static bfd_reloc_status_type or32_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
+
+#define INSERT_HWORD(WORD,HWORD) \
+ (((WORD) & 0xffff0000) | ((HWORD)& 0x0000ffff))
+#define EXTRACT_HWORD(WORD) \
+ ((WORD) & 0x0000ffff)
+#define SIGN_EXTEND_HWORD(HWORD) \
+ ((HWORD) & 0x8000 ? (HWORD)|(~0xffffL) : (HWORD))
+
+#define INSERT_JUMPTARG(WORD,JT) \
+ (((WORD) & 0xfc000000) | ((JT)& 0x03ffffff))
+#define EXTRACT_JUMPTARG(WORD) \
+ ((WORD) & 0x03ffffff)
+#define SIGN_EXTEND_JUMPTARG(JT) \
+ ((JT) & 0x04000000 ? (JT)|(~0x03ffffffL) : (JT))
+
+/* Provided the symbol, returns the value reffed. */
+
+static long
+get_symbol_value (asymbol *symbol)
+{
+ long relocation = 0;
+
+ 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 or32 relocations. */
+
+static bfd_reloc_status_type
+or32_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol_in,
+ void * 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 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;
+
+ 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;
+ }
+
+ 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_JUMPTARG (insn);
+ signed_value = SIGN_EXTEND_JUMPTARG (signed_value);
+ signed_value <<= 2;
+
+ /* See the note on the R_IREL reloc in coff_or32_relocate_section. */
+ if (signed_value == - (long) reloc_entry->address)
+ signed_value = 0;
+
+ signed_value += sym_value + reloc_entry->addend;
+ /* 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 > 0x7ffffff || signed_value < -0x8000000)
+ return bfd_reloc_overflow;
+
+ signed_value >>= 2;
+ insn = INSERT_JUMPTARG (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)
+ {
+ *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;
+ }
+
+ 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. */
+static reloc_howto_type howto_table[] =
+{
+ { R_ABS, 0, 3, 32, FALSE, 0, complain_overflow_bitfield, or32_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, or32_reloc, "IREL", TRUE, 0xffffffff,0xffffffff, FALSE },
+ { R_IABS, 0, 3, 32, FALSE, 0, complain_overflow_bitfield, or32_reloc, "IABS", TRUE, 0xffffffff,0xffffffff, FALSE },
+ { R_ILOHALF, 0, 3, 16, TRUE, 0, complain_overflow_signed, or32_reloc, "ILOHALF", TRUE, 0x0000ffff,0x0000ffff, FALSE },
+ { R_IHIHALF, 0, 3, 16, TRUE, 16,complain_overflow_signed, or32_reloc, "IHIHALF", TRUE, 0xffff0000,0xffff0000, FALSE },
+ { R_IHCONST, 0, 3, 16, TRUE, 0, complain_overflow_signed, or32_reloc, "IHCONST", TRUE, 0xffff0000,0xffff0000, FALSE },
+ { R_BYTE, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, or32_reloc, "BYTE", TRUE, 0x000000ff,0x000000ff, FALSE },
+ { R_HWORD, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, or32_reloc, "HWORD", TRUE, 0x0000ffff,0x0000ffff, FALSE },
+ { R_WORD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, or32_reloc, "WORD", TRUE, 0xffffffff,0xffffffff, FALSE },
+};
+
+#define BADMAG(x) OR32BADMAG (x)
+
+#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)
+{
+ 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
+ {
+ relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
+ 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. */
+
+static bfd_boolean
+coff_or32_relocate_section (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_JUMPTARG (insn);
+ signed_value = SIGN_EXTEND_JUMPTARG (signed_value);
+ signed_value <<= 2;
+
+ /* Determine the destination of the jump. */
+ signed_value += val;
+
+ /* 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 > 0x7ffffff || signed_value < - 0x8000000)
+ {
+ overflow = TRUE;
+ signed_value = 0;
+ }
+
+ /* Put the adjusted value back into the instruction. */
+ signed_value >>= 2;
+ insn = INSERT_JUMPTARG(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 = NULL;
+ 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, (h ? &h->root : NULL), 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_or32_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. */
+
+static bfd_boolean
+coff_or32_adjust_symndx (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)
+{
+ if (irel->r_type == R_IHCONST)
+ *adjustedp = TRUE;
+ else
+ *adjustedp = FALSE;
+ return TRUE;
+}
+
+#define coff_adjust_symndx coff_or32_adjust_symndx
+
+#ifndef bfd_pe_print_pdata
+#define bfd_pe_print_pdata NULL
+#endif
+
+#include "coffcode.h"
+
+const bfd_target or32coff_big_vec =
+{
+ "coff-or32-big", /* Name. */
+ bfd_target_coff_flavour,
+ BFD_ENDIAN_BIG, /* Data byte order is big. */
+ BFD_ENDIAN_BIG, /* Header byte order is big. */
+
+ (HAS_RELOC | EXEC_P | /* Object flags. */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | WP_TEXT),
+
+ (SEC_HAS_CONTENTS | SEC_ALLOC | /* Section flags. */
+ SEC_LOAD | SEC_RELOC |
+ SEC_READONLY ),
+ '_', /* Leading underscore. */
+ '/', /* ar_pad_char. */
+ 15, /* ar_max_namelen. */
+ 0, /* match priority. */
+
+ /* Data. */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16,
+
+ /* Headers. */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_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
+ },
+
+ BFD_JUMP_TABLE_GENERIC (coff),
+ BFD_JUMP_TABLE_COPY (coff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (coff),
+ BFD_JUMP_TABLE_RELOCS (coff),
+ BFD_JUMP_TABLE_WRITE (coff),
+ BFD_JUMP_TABLE_LINK (coff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ /* Alternative_target. */
+#ifdef TARGET_LITTLE_SYM
+ & TARGET_LITTLE_SYM,
+#else
+ NULL,
+#endif
+
+ COFF_SWAP_TABLE
+};
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