diff options
Diffstat (limited to 'contrib/gdb/bfd/coff-h8300.c')
| -rw-r--r-- | contrib/gdb/bfd/coff-h8300.c | 650 |
1 files changed, 0 insertions, 650 deletions
diff --git a/contrib/gdb/bfd/coff-h8300.c b/contrib/gdb/bfd/coff-h8300.c deleted file mode 100644 index 48d0d5a..0000000 --- a/contrib/gdb/bfd/coff-h8300.c +++ /dev/null @@ -1,650 +0,0 @@ -/* BFD back-end for Hitachi H8/300 COFF binaries. - Copyright 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. - Written by Steve Chamberlain, <sac@cygnus.com>. - -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, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "obstack.h" -#include "libbfd.h" -#include "bfdlink.h" -#include "genlink.h" -#include "coff/h8300.h" -#include "coff/internal.h" -#include "libcoff.h" - -#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) - - -/* special handling for H8/300 relocs. - We only come here for pcrel stuff and return normally if not an -r link. - When doing -r, we can't do any arithmetic for the pcrel stuff, because - the code in reloc.c assumes that we can manipulate the targets of - the pcrel branches. This isn't so, since the H8/300 can do relaxing, - which means that the gap after the instruction may not be enough to - contain the offset required for the branch, so we have to use the only - the addend until the final link */ - -static bfd_reloc_status_type -special (abfd, reloc_entry, symbol, data, input_section, output_bfd, - error_message) - bfd *abfd; - arelent *reloc_entry; - asymbol *symbol; - PTR data; - asection *input_section; - bfd *output_bfd; - char **error_message; -{ - if (output_bfd == (bfd *) NULL) - return bfd_reloc_continue; - - return bfd_reloc_ok; -} - -static reloc_howto_type howto_table[] = -{ - HOWTO (R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "8", false, 0x000000ff, 0x000000ff, false), - HOWTO (R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "16", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, special, "32", false, 0xffffffff, 0xffffffff, false), - HOWTO (R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, special, "DISP8", false, 0x000000ff, 0x000000ff, true), - HOWTO (R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, special, "DISP16", false, 0x0000ffff, 0x0000ffff, true), - HOWTO (R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, special, "DISP32", false, 0xffffffff, 0xffffffff, true), - HOWTO (R_MOVB1, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "16/8", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_MOVB2, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "8/16", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_JMP1, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "16/pcrel", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_JMP2, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "pcrecl/16", false, 0x000000ff, 0x000000ff, false), - - - HOWTO (R_JMPL1, 0, 2, 32, false, 0, complain_overflow_bitfield, special, "24/pcrell", false, 0x00ffffff, 0x00ffffff, false), - HOWTO (R_JMPL_B8, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "pc8/24", false, 0x000000ff, 0x000000ff, false), - - HOWTO (R_MOVLB1, 0, 1, 16, false, 0, complain_overflow_bitfield,special, "24/8", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_MOVLB2, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "8/24", false, 0x0000ffff, 0x0000ffff, false), - - /* An indirect reference to a function. This causes the function's address - to be added to the function vector in lo-mem and puts the address of - the function vector's entry in the jsr instruction. */ - HOWTO (R_MEM_INDIRECT, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "8/indirect", false, 0x000000ff, 0x000000ff, false), - -}; - - -/* Turn a howto into a reloc number */ - -#define SELECT_RELOC(x,howto) \ - { x.r_type = select_reloc(howto); } - -#define BADMAG(x) (H8300BADMAG(x)&& H8300HBADMAG(x)) -#define H8300 1 /* Customize coffcode.h */ -#define __A_MAGIC_SET__ - - - -/* Code to swap in the reloc */ -#define SWAP_IN_RELOC_OFFSET bfd_h_get_32 -#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 -#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ - dst->r_stuff[0] = 'S'; \ - dst->r_stuff[1] = 'C'; - - -static int -select_reloc (howto) - reloc_howto_type *howto; -{ - return howto->type; -} - -/* Code to turn a r_type into a howto ptr, uses the above howto table - */ - -static void -rtype2howto (internal, dst) - arelent *internal; - struct internal_reloc *dst; -{ - switch (dst->r_type) - { - case R_RELBYTE: - internal->howto = howto_table + 0; - break; - case R_RELWORD: - internal->howto = howto_table + 1; - break; - case R_RELLONG: - internal->howto = howto_table + 2; - break; - case R_PCRBYTE: - internal->howto = howto_table + 3; - break; - case R_PCRWORD: - internal->howto = howto_table + 4; - break; - case R_PCRLONG: - internal->howto = howto_table + 5; - break; - case R_MOVB1: - internal->howto = howto_table + 6; - break; - case R_MOVB2: - internal->howto = howto_table + 7; - break; - case R_JMP1: - internal->howto = howto_table + 8; - break; - case R_JMP2: - internal->howto = howto_table + 9; - break; - case R_JMPL1: - internal->howto = howto_table + 10; - break; - case R_JMPL_B8: - internal->howto = howto_table + 11; - break; - case R_MOVLB1: - internal->howto = howto_table + 12; - break; - case R_MOVLB2: - internal->howto = howto_table + 13; - break; - case R_MEM_INDIRECT: - internal->howto = howto_table + 14; - break; - default: - abort (); - break; - } -} - -#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) - - -/* Perform any necessaru magic to the addend in a reloc entry */ - - -#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ - cache_ptr->addend = ext_reloc.r_offset; - - -#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; -{ - relent->address = reloc->r_vaddr; - rtype2howto (relent, reloc); - - if (((int) reloc->r_symndx) > 0) - { - relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; - } - else - { - relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; - } - - - - relent->addend = reloc->r_offset; - - relent->address -= section->vma; - /* relent->section = 0;*/ -} - - -static int -h8300_reloc16_estimate(abfd, input_section, reloc, shrink, link_info) - bfd *abfd; - asection *input_section; - arelent *reloc; - unsigned int shrink; - struct bfd_link_info *link_info; -{ - bfd_vma value; - bfd_vma dot; - bfd_vma gap; - - /* The address of the thing to be relocated will have moved back by - the size of the shrink - but we don't change reloc->address here, - since we need it to know where the relocation lives in the source - uncooked section */ - - /* reloc->address -= shrink; conceptual */ - - bfd_vma address = reloc->address - shrink; - - - switch (reloc->howto->type) - { - case R_MOVB2: - case R_JMP2: - shrink+=2; - break; - - /* Thing is a move one byte */ - case R_MOVB1: - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - if (value >= 0xff00) - { - - /* Change the reloc type from 16bit, possible 8 to 8bit - possible 16 */ - reloc->howto = reloc->howto + 1; - /* The place to relc moves back by one */ - /* This will be two bytes smaller in the long run */ - shrink +=2 ; - bfd_perform_slip(abfd, 2, input_section, address); - } - - break; - /* This is the 24 bit branch which could become an 8 bitter, - the relocation points to the first byte of the insn, not the - actual data */ - - case R_JMPL1: - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - dot = input_section->output_section->vma + - input_section->output_offset + address; - - /* See if the address we're looking at within 127 bytes of where - we are, if so then we can use a small branch rather than the - jump we were going to */ - - gap = value - dot ; - - if (-120 < (long)gap && (long)gap < 120 ) - { - - /* Change the reloc type from 24bit, possible 8 to 8bit - possible 32 */ - reloc->howto = reloc->howto + 1; - /* This will be two bytes smaller in the long run */ - shrink +=2 ; - bfd_perform_slip(abfd, 2, input_section, address); - } - break; - - case R_JMP1: - - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - dot = input_section->output_section->vma + - input_section->output_offset + address; - - /* See if the address we're looking at within 127 bytes of where - we are, if so then we can use a small branch rather than the - jump we were going to */ - - gap = value - (dot - shrink); - - - if (-120 < (long)gap && (long)gap < 120 ) - { - - /* Change the reloc type from 16bit, possible 8 to 8bit - possible 16 */ - reloc->howto = reloc->howto + 1; - /* The place to relc moves back by one */ - - /* This will be two bytes smaller in the long run */ - shrink +=2 ; - bfd_perform_slip(abfd, 2, input_section, address); - } - break; - } - - - return shrink; -} - - -/* First phase of a relaxing link */ - -/* Reloc types - large small - R_MOVB1 R_MOVB2 mov.b with 16bit or 8 bit address - R_JMP1 R_JMP2 jmp or pcrel branch - R_JMPL1 R_JMPL_B8 24jmp or pcrel branch - R_MOVLB1 R_MOVLB2 24 or 8 bit reloc for mov.b - -*/ - -static void -h8300_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr, - dst_ptr) - bfd *abfd; - struct bfd_link_info *link_info; - struct bfd_link_order *link_order; - arelent *reloc; - bfd_byte *data; - unsigned int *src_ptr; - unsigned int *dst_ptr; -{ - unsigned int src_address = *src_ptr; - unsigned int dst_address = *dst_ptr; - asection *input_section = link_order->u.indirect.section; - - switch (reloc->howto->type) - { - /* A 24 bit branch which could be a 8 bit pcrel, really pointing to - the byte before the 24bit hole, so we can treat it as a 32bit pointer */ - case R_PCRBYTE: - { - bfd_vma dot = link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma; - int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section) - - dot); - if (gap > 127 || gap < -128) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - gap &= ~1; - bfd_put_8 (abfd, gap, data + dst_address); - dst_address++; - src_address++; - - break; - } - case R_PCRWORD: - { - bfd_vma dot = link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma; - int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section) - - dot) - 1; - if (gap > 32767 || gap < -32768) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - bfd_put_16 (abfd, gap, data + dst_address); - dst_address+=2; - src_address+=2; - - break; - } - - case R_MEM_INDIRECT: /* Temporary */ - case R_RELBYTE: - { - unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info, - input_section); - if (gap < 0xff - || (gap >= 0x0000ff00 - && gap <= 0x0000ffff) - || ( gap >= 0x00ffff00 - && gap <= 0x00ffffff) - || ( gap >= 0xffffff00 - && gap <= 0xffffffff)) - { - bfd_put_8 (abfd, gap, data + dst_address); - dst_address += 1; - src_address += 1; - } - else - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - } - break; - case R_JMP1: - /* A relword which would have like to have been a pcrel */ - case R_MOVB1: - /* A relword which would like to have been modified but - didn't make it */ - case R_RELWORD: - bfd_put_16 (abfd, - bfd_coff_reloc16_get_value (reloc, link_info, input_section), - data + dst_address); - dst_address += 2; - src_address += 2; - break; - case R_RELLONG: - bfd_put_32 (abfd, - bfd_coff_reloc16_get_value (reloc, link_info, input_section), - data + dst_address); - dst_address += 4; - src_address += 4; - break; - - case R_MOVB2: - /* Special relaxed type, there will be a gap between where we - get stuff from and where we put stuff to now - - for a mov.b @aa:16 -> mov.b @aa:8 - opcode 0x6a 0x0y offset - -> 0x2y off - */ - if (data[dst_address - 1] != 0x6a) - abort (); - switch (data[src_address] & 0xf0) - { - case 0x00: - /* Src is memory */ - data[dst_address - 1] = (data[src_address] & 0xf) | 0x20; - break; - case 0x80: - /* Src is reg */ - data[dst_address - 1] = (data[src_address] & 0xf) | 0x30; - break; - default: - abort (); - } - - /* the offset must fit ! after all, what was all the relaxing - about ? */ - - bfd_put_8 (abfd, - bfd_coff_reloc16_get_value (reloc, link_info, input_section), - data + dst_address); - - /* Note the magic - src goes up by two bytes, but dst by only - one */ - dst_address += 1; - src_address += 3; - - break; - - case R_JMP2: - - /* Speciial relaxed type */ - { - bfd_vma dot = link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma; - - int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section) - - dot - 1); - - if ((gap & ~0xff) != 0 && ((gap & 0xff00) != 0xff00)) - abort (); - - bfd_put_8 (abfd, gap, data + dst_address); - - switch (data[dst_address - 1]) - { - case 0x5e: - /* jsr -> bsr */ - bfd_put_8 (abfd, 0x55, data + dst_address - 1); - break; - case 0x5a: - /* jmp ->bra */ - bfd_put_8 (abfd, 0x40, data + dst_address - 1); - break; - - default: - abort (); - } - dst_address++; - src_address += 3; - - break; - } - break; - - case R_JMPL_B8: /* 24 bit branch which is now 8 bits */ - - /* Speciial relaxed type */ - { - bfd_vma dot = link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma; - - int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section) - - dot - 2); - - if ((gap & ~0xff) != 0 && ((gap & 0xff00) != 0xff00)) - abort (); - - switch (data[src_address]) - { - case 0x5e: - /* jsr -> bsr */ - bfd_put_8 (abfd, 0x55, data + dst_address); - break; - case 0x5a: - /* jmp ->bra */ - bfd_put_8 (abfd, 0x40, data + dst_address); - break; - - default: - bfd_put_8 (abfd, 0xde, data + dst_address); - break; - } - - bfd_put_8 (abfd, gap, data + dst_address + 1); - dst_address += 2; - src_address += 4; - - break; - } - - case R_JMPL1: - { - int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - int o = bfd_get_32 (abfd, data + src_address); - v = (v & 0x00ffffff) | (o & 0xff000000); - bfd_put_32 (abfd, v, data + dst_address); - dst_address += 4; - src_address += 4; - } - - break; - - - /* A 24 bit mov which could be an 8 bit move, really pointing to - the byte before the 24bit hole, so we can treat it as a 32bit pointer */ - case R_MOVLB1: - { - int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - int o = bfd_get_32 (abfd, data + dst_address); - v = (v & 0x00ffffff) | (o & 0xff000000); - bfd_put_32 (abfd, v, data + dst_address); - dst_address += 4; - src_address += 4; - } - - break; - default: - - abort (); - break; - - } - *src_ptr = src_address; - *dst_ptr = dst_address; - -} - -#define coff_reloc16_extra_cases h8300_reloc16_extra_cases -#define coff_reloc16_estimate h8300_reloc16_estimate - -#define COFF_LONG_FILENAMES -#include "coffcode.h" - - -#undef coff_bfd_get_relocated_section_contents -#undef coff_bfd_relax_section -#define coff_bfd_get_relocated_section_contents \ - bfd_coff_reloc16_get_relocated_section_contents -#define coff_bfd_relax_section bfd_coff_reloc16_relax_section - - - -const bfd_target h8300coff_vec = -{ - "coff-h8300", /* 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 | BFD_IS_RELAXABLE ), - (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ - '_', /* leading char */ - '/', /* ar_pad_char */ - 15, /* ar_max_namelen */ - bfd_getb64, bfd_getb_signed_64, bfd_putb64, - bfd_getb32, bfd_getb_signed_32, bfd_putb32, - bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* 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, /* hdrs */ - - {_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}, - - 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), - - COFF_SWAP_TABLE, -}; |
