diff options
Diffstat (limited to 'binutils-2.17/bfd/coff-mcore.c')
| -rw-r--r-- | binutils-2.17/bfd/coff-mcore.c | 564 |
1 files changed, 0 insertions, 564 deletions
diff --git a/binutils-2.17/bfd/coff-mcore.c b/binutils-2.17/bfd/coff-mcore.c deleted file mode 100644 index 08935fd6..00000000 --- a/binutils-2.17/bfd/coff-mcore.c +++ /dev/null @@ -1,564 +0,0 @@ -/* BFD back-end for Motorola MCore COFF/PE - Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 - Free Software Foundation, Inc. - -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 2 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, 51 Franklin Street - Fifth Floor, -Boston, MA 02110-1301, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "coff/mcore.h" -#include "coff/internal.h" -#include "coff/pe.h" -#include "libcoff.h" - -#ifdef BADMAG -#undef BADMAG -#endif -#define BADMAG(x) MCOREBADMAG(x) - -#ifndef NUM_ELEM -#define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0]) -#endif - -/* This file is compiled more than once, but we only compile the - final_link routine once. */ -extern bfd_boolean mcore_bfd_coff_final_link - PARAMS ((bfd *, struct bfd_link_info *)); -static bfd_reloc_status_type mcore_coff_unsupported_reloc - PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); -static bfd_boolean coff_mcore_relocate_section - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, - struct internal_reloc *, struct internal_syment *, asection **)); -static reloc_howto_type *mcore_coff_reloc_type_lookup - PARAMS ((bfd *, bfd_reloc_code_real_type)); -static reloc_howto_type *coff_mcore_rtype_to_howto - PARAMS ((bfd *, asection *, struct internal_reloc *, - struct coff_link_hash_entry *, struct internal_syment *, - bfd_vma *)); -static void mcore_emit_base_file_entry - PARAMS ((struct bfd_link_info *, bfd *, asection *, bfd_vma)); -static bfd_boolean in_reloc_p PARAMS ((bfd *, reloc_howto_type *)); - -/* The NT loader points the toc register to &toc + 32768, in order to - use the complete range of a 16-bit displacement. We have to adjust - for this when we fix up loads displaced off the toc reg. */ -#define TOC_LOAD_ADJUSTMENT (-32768) -#define TOC_SECTION_NAME ".private.toc" - -/* The main body of code is in coffcode.h. */ -#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2 - -/* In case we're on a 32-bit machine, construct a 64-bit "-1" value - from smaller values. Start with zero, widen, *then* decrement. */ -#define MINUS_ONE (((bfd_vma)0) - 1) - -static reloc_howto_type mcore_coff_howto_table[] = -{ - /* Unused: */ - HOWTO (IMAGE_REL_MCORE_ABSOLUTE,/* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* dont complain_on_overflow */ - NULL, /* special_function */ - "ABSOLUTE", /* name */ - FALSE, /* partial_inplace */ - 0x00, /* src_mask */ - 0x00, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (IMAGE_REL_MCORE_ADDR32,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - NULL, /* special_function */ - "ADDR32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 8 bits + 2 zero bits; jmpi/jsri/lrw instructions. - Should not appear in object files. */ - HOWTO (IMAGE_REL_MCORE_PCREL_IMM8BY4, /* type */ - 2, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - mcore_coff_unsupported_reloc, /* special_function */ - "IMM8BY4", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* bsr/bt/bf/br instructions; 11 bits + 1 zero bit - Span 2k instructions == 4k bytes. - Only useful pieces at the relocated address are the opcode (5 bits) */ - HOWTO (IMAGE_REL_MCORE_PCREL_IMM11BY2,/* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 11, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - NULL, /* special_function */ - "IMM11BY2", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x7ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 4 bits + 1 zero bit; 'loopt' instruction only; unsupported. */ - HOWTO (IMAGE_REL_MCORE_PCREL_IMM4BY2, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 4, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - mcore_coff_unsupported_reloc, /* special_function */ - "IMM4BY2", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 32-bit pc-relative. Eventually this will help support PIC code. */ - HOWTO (IMAGE_REL_MCORE_PCREL_32,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - NULL, /* special_function */ - "PCREL_32", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* Like PCREL_IMM11BY2, this relocation indicates that there is a - 'jsri' at the specified address. There is a separate relocation - entry for the literal pool entry that it references, but we - might be able to change the jsri to a bsr if the target turns out - to be close enough [even though we won't reclaim the literal pool - entry, we'll get some runtime efficiency back]. Note that this - is a relocation that we are allowed to safely ignore. */ - HOWTO (IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2,/* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 11, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - NULL, /* special_function */ - "JSR_IMM11BY2", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x7ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (IMAGE_REL_MCORE_RVA, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - NULL, /* special_function */ - "MCORE_RVA", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE) /* pcrel_offset */ -}; - -/* Extend the coff_link_hash_table structure with a few M*Core specific fields. - This allows us to store global data here without actually creating any - global variables, which is a no-no in the BFD world. */ -typedef struct coff_mcore_link_hash_table -{ - /* The original coff_link_hash_table structure. MUST be first field. */ - struct coff_link_hash_table root; - - bfd * bfd_of_toc_owner; - long int global_toc_size; - long int import_table_size; - long int first_thunk_address; - long int thunk_size; -} -mcore_hash_table; - -/* Get the MCore coff linker hash table from a link_info structure. */ -#define coff_mcore_hash_table(info) \ - ((mcore_hash_table *) ((info)->hash)) - - -/* Add an entry to the base file. */ - -static void -mcore_emit_base_file_entry (info, output_bfd, input_section, reloc_offset) - struct bfd_link_info * info; - bfd * output_bfd; - asection * input_section; - bfd_vma reloc_offset; -{ - bfd_vma addr = reloc_offset - - input_section->vma - + input_section->output_offset - + input_section->output_section->vma; - - if (coff_data (output_bfd)->pe) - addr -= pe_data (output_bfd)->pe_opthdr.ImageBase; - - fwrite (&addr, 1, sizeof (addr), (FILE *) info->base_file); -} - -static bfd_reloc_status_type -mcore_coff_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section, - output_bfd, error_message) - bfd * abfd; - arelent * reloc_entry; - asymbol * symbol ATTRIBUTE_UNUSED; - PTR data ATTRIBUTE_UNUSED; - asection * input_section ATTRIBUTE_UNUSED; - bfd * output_bfd ATTRIBUTE_UNUSED; - char ** error_message ATTRIBUTE_UNUSED; -{ - BFD_ASSERT (reloc_entry->howto != (reloc_howto_type *)0); - - _bfd_error_handler (_("%B: Relocation %s (%d) is not currently supported.\n"), - abfd, - reloc_entry->howto->name, - reloc_entry->howto->type); - - return bfd_reloc_notsupported; -} - -/* A cheesy little macro to make the code a little more readable. */ -#define HOW2MAP(bfd_rtype, mcore_rtype) \ - case bfd_rtype: return & mcore_coff_howto_table [mcore_rtype] - -static reloc_howto_type * -mcore_coff_reloc_type_lookup (abfd, code) - bfd * abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; -{ - switch (code) - { - HOW2MAP (BFD_RELOC_32, IMAGE_REL_MCORE_ADDR32); - HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM8BY4, IMAGE_REL_MCORE_PCREL_IMM8BY4); - HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM11BY2, IMAGE_REL_MCORE_PCREL_IMM11BY2); - HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM4BY2, IMAGE_REL_MCORE_PCREL_IMM4BY2); - HOW2MAP (BFD_RELOC_32_PCREL, IMAGE_REL_MCORE_PCREL_32); - HOW2MAP (BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2, IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2); - HOW2MAP (BFD_RELOC_RVA, IMAGE_REL_MCORE_RVA); - default: - return NULL; - } - /*NOTREACHED*/ -} - -#undef HOW2MAP - -#define RTYPE2HOWTO(cache_ptr, dst) \ - (cache_ptr)->howto = mcore_coff_howto_table + (dst)->r_type; - -static reloc_howto_type * -coff_mcore_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 ATTRIBUTE_UNUSED; - struct internal_syment * sym; - bfd_vma * addendp; -{ - reloc_howto_type * howto; - - if (rel->r_type >= NUM_ELEM (mcore_coff_howto_table)) - return NULL; - - howto = mcore_coff_howto_table + rel->r_type; - - if (rel->r_type == IMAGE_REL_MCORE_RVA) - * addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase; - - else if (howto->pc_relative) - { - * addendp = sec->vma - 2; /* XXX guess - is this right ? */ - - /* If the symbol is defined, then the generic code is going to - add back the symbol value in order to cancel out an - adjustment it made to the addend. However, we set the addend - to 0 at the start of this function. We need to adjust here, - to avoid the adjustment the generic code will make. FIXME: - This is getting a bit hackish. */ - if (sym != NULL && sym->n_scnum != 0) - * addendp -= sym->n_value; - } - else - * addendp = 0; - - return howto; -} - -/* Return TRUE if this relocation should appear in the output .reloc section. - This function is referenced in pe_mkobject in peicode.h. */ - -static bfd_boolean -in_reloc_p (abfd, howto) - bfd * abfd ATTRIBUTE_UNUSED; - reloc_howto_type * howto; -{ - return ! howto->pc_relative && howto->type != IMAGE_REL_MCORE_RVA; -} - -/* The reloc processing routine for the optimized COFF linker. */ -static bfd_boolean -coff_mcore_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, syms, sections) - bfd * output_bfd; - 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; - - /* Check if we have the same endianess */ - if ( input_bfd->xvec->byteorder != output_bfd->xvec->byteorder - && output_bfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) - { - (*_bfd_error_handler) - (_("%B: compiled for a %s system and target is %s.\n"), - input_bfd, - bfd_big_endian (input_bfd) ? _("big endian") : _("little endian"), - bfd_big_endian (output_bfd) ? _("big endian") : _("little endian")); - - bfd_set_error (bfd_error_wrong_format); - return FALSE; - } - - hihalf = FALSE; - hihalf_val = 0; - - rel = relocs; - relend = rel + input_section->reloc_count; - - for (; rel < relend; rel++) - { - long symndx; - struct internal_syment * sym; - bfd_vma val; - bfd_vma addend; - bfd_reloc_status_type rstat; - bfd_byte * loc; - unsigned short r_type = rel->r_type; - reloc_howto_type * howto = NULL; - struct coff_link_hash_entry * h; - const char * my_name; - - symndx = rel->r_symndx; - loc = contents + rel->r_vaddr - input_section->vma; - - if (symndx == -1) - { - h = NULL; - sym = NULL; - } - else - { - h = obj_coff_sym_hashes (input_bfd)[symndx]; - sym = syms + symndx; - } - - addend = 0; - - /* Get the howto and initialise the addend. */ - howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, - sym, & addend); - if (howto == NULL) - return FALSE; - - val = 0; - - if (h == NULL) - { - if (symndx == -1) - my_name = "*ABS*"; - else - { - asection * sec = sections[symndx]; - - val = (sym->n_value - + sec->output_section->vma - + sec->output_offset); - - if (sym == NULL) - my_name = "*unknown*"; - else if ( sym->_n._n_n._n_zeroes == 0 - && sym->_n._n_n._n_offset != 0) - my_name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset; - else - { - static char buf [SYMNMLEN + 1]; - - strncpy (buf, sym->_n._n_name, SYMNMLEN); - buf[SYMNMLEN] = '\0'; - my_name = buf; - } - } - } - else - { - if ( h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - asection * 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; - } - - my_name = h->root.root.string; - } - - rstat = bfd_reloc_ok; - - /* Each case must do its own relocation, setting rstat appropriately. */ - switch (r_type) - { - default: - _bfd_error_handler (_("%B: unsupported relocation type 0x%02x"), - input_bfd, r_type); - bfd_set_error (bfd_error_bad_value); - return FALSE; - - case IMAGE_REL_MCORE_ABSOLUTE: - _bfd_error_handler - (_("Warning: unsupported reloc %s <file %B, section %A>\n" - "sym %ld (%s), r_vaddr %ld (%lx)"), - input_bfd, input_section, howto->name, - rel->r_symndx, my_name, (long) rel->r_vaddr, - (unsigned long) rel->r_vaddr); - break; - - case IMAGE_REL_MCORE_PCREL_IMM8BY4: - case IMAGE_REL_MCORE_PCREL_IMM11BY2: - case IMAGE_REL_MCORE_PCREL_IMM4BY2: - case IMAGE_REL_MCORE_PCREL_32: - case IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2: - case IMAGE_REL_MCORE_ADDR32: - /* XXX fixme - shouldn't this be like the code for the RVA reloc ? */ - rstat = _bfd_relocate_contents (howto, input_bfd, val, loc); - break; - - case IMAGE_REL_MCORE_RVA: - rstat = _bfd_final_link_relocate - (howto, input_bfd, - input_section, contents, rel->r_vaddr - input_section->vma, - val, addend); - break; - } - - if (info->base_file) - { - /* Emit a reloc if the backend thinks it needs it. */ - if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) - mcore_emit_base_file_entry (info, output_bfd, input_section, rel->r_vaddr); - } - - switch (rstat) - { - default: - abort (); - - case bfd_reloc_ok: - break; - - case bfd_reloc_overflow: - if (! ((*info->callbacks->reloc_overflow) - (info, (h ? &h->root : NULL), my_name, howto->name, - (bfd_vma) 0, input_bfd, - input_section, rel->r_vaddr - input_section->vma))) - return FALSE; - } - } - - return TRUE; -} - -/* Tailor coffcode.h -- macro heaven. */ - -/* We use the special COFF backend linker, with our own special touch. */ - -#define coff_bfd_reloc_type_lookup mcore_coff_reloc_type_lookup -#define coff_relocate_section coff_mcore_relocate_section -#define coff_rtype_to_howto coff_mcore_rtype_to_howto - -#define SELECT_RELOC(internal, howto) {internal.r_type = howto->type;} - -/* Make sure that the 'r_offset' field is copied properly - so that identical binaries will compare the same. */ -#define SWAP_IN_RELOC_OFFSET H_GET_32 -#define SWAP_OUT_RELOC_OFFSET H_PUT_32 - -#define COFF_PAGE_SIZE 0x1000 - -#include "coffcode.h" - -/* Forward declaration to initialise alternative_target field. */ -extern const bfd_target TARGET_LITTLE_SYM; - -/* The transfer vectors that lead the outside world to all of the above. */ -CREATE_BIG_COFF_TARGET_VEC (TARGET_BIG_SYM, TARGET_BIG_NAME, D_PAGED, - (SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_READONLY | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), - 0, & TARGET_LITTLE_SYM, COFF_SWAP_TABLE) -CREATE_LITTLE_COFF_TARGET_VEC (TARGET_LITTLE_SYM, TARGET_LITTLE_NAME, D_PAGED, - (SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_READONLY | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), - 0, & TARGET_BIG_SYM, COFF_SWAP_TABLE) |