diff options
Diffstat (limited to 'binutils-2.25/bfd/coff-z8k.c')
| -rw-r--r-- | binutils-2.25/bfd/coff-z8k.c | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/coff-z8k.c b/binutils-2.25/bfd/coff-z8k.c new file mode 100644 index 00000000..7e9dba50 --- /dev/null +++ b/binutils-2.25/bfd/coff-z8k.c @@ -0,0 +1,388 @@ +/* BFD back-end for Zilog Z800n COFF binaries. + Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, + 2004, 2005, 2007, 2008 Free Software Foundation, Inc. + Contributed by Cygnus Support. + 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 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. */ + +#include "sysdep.h" +#include "bfd.h" +#include "libbfd.h" +#include "bfdlink.h" +#include "coff/z8k.h" +#include "coff/internal.h" +#include "libcoff.h" + +#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) + +static reloc_howto_type r_imm32 = +HOWTO (R_IMM32, 0, 2, 32, FALSE, 0, + complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, + 0xffffffff, FALSE); + +static reloc_howto_type r_imm4l = +HOWTO (R_IMM4L, 0, 0, 4, FALSE, 0, + complain_overflow_bitfield, 0, "r_imm4l", TRUE, 0xf, 0xf, FALSE); + +static reloc_howto_type r_da = +HOWTO (R_IMM16, 0, 1, 16, FALSE, 0, + complain_overflow_bitfield, 0, "r_da", TRUE, 0x0000ffff, 0x0000ffff, + FALSE); + +static reloc_howto_type r_imm8 = +HOWTO (R_IMM8, 0, 0, 8, FALSE, 0, + complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, + FALSE); + +static reloc_howto_type r_rel16 = +HOWTO (R_REL16, 0, 1, 16, FALSE, 0, + complain_overflow_bitfield, 0, "r_rel16", TRUE, 0x0000ffff, 0x0000ffff, + TRUE); + +static reloc_howto_type r_jr = +HOWTO (R_JR, 1, 0, 8, TRUE, 0, complain_overflow_signed, 0, + "r_jr", TRUE, 0xff, 0xff, TRUE); + +static reloc_howto_type r_disp7 = +HOWTO (R_DISP7, 0, 0, 7, TRUE, 0, complain_overflow_bitfield, 0, + "r_disp7", TRUE, 0x7f, 0x7f, TRUE); + +static reloc_howto_type r_callr = +HOWTO (R_CALLR, 1, 1, 12, TRUE, 0, complain_overflow_signed, 0, + "r_callr", TRUE, 0xfff, 0xfff, TRUE); + +#define BADMAG(x) Z8KBADMAG(x) +#define Z8K 1 /* Customize coffcode.h. */ +#define __A_MAGIC_SET__ + +/* Code to swap in the reloc. */ +#define SWAP_IN_RELOC_OFFSET H_GET_32 +#define SWAP_OUT_RELOC_OFFSET H_PUT_32 +#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ + dst->r_stuff[0] = 'S'; \ + dst->r_stuff[1] = 'C'; + +/* Code to turn a r_type into a howto ptr, uses the above howto table. */ + +static void +rtype2howto (arelent *internal, struct internal_reloc *dst) +{ + switch (dst->r_type) + { + default: + abort (); + break; + case R_IMM8: + internal->howto = &r_imm8; + break; + case R_IMM16: + internal->howto = &r_da; + break; + case R_JR: + internal->howto = &r_jr; + break; + case R_DISP7: + internal->howto = &r_disp7; + break; + case R_CALLR: + internal->howto = &r_callr; + break; + case R_REL16: + internal->howto = &r_rel16; + break; + case R_IMM32: + internal->howto = &r_imm32; + break; + case R_IMM4L: + internal->howto = &r_imm4l; + break; + } +} + +#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry) + +static reloc_howto_type * +coff_z8k_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) +{ + switch (code) + { + case BFD_RELOC_8: return & r_imm8; + case BFD_RELOC_16: return & r_da; + case BFD_RELOC_32: return & r_imm32; + case BFD_RELOC_8_PCREL: return & r_jr; + case BFD_RELOC_16_PCREL: return & r_rel16; + case BFD_RELOC_Z8K_DISP7: return & r_disp7; + case BFD_RELOC_Z8K_CALLR: return & r_callr; + case BFD_RELOC_Z8K_IMM4L: return & r_imm4l; + default: BFD_FAIL (); + return 0; + } +} + +static reloc_howto_type * +coff_z8k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, + const char *r_name) +{ + if (strcasecmp (r_imm8.name, r_name) == 0) + return &r_imm8; + if (strcasecmp (r_da.name, r_name) == 0) + return &r_da; + if (strcasecmp (r_imm32.name, r_name) == 0) + return &r_imm32; + if (strcasecmp (r_jr.name, r_name) == 0) + return &r_jr; + if (strcasecmp (r_rel16.name, r_name) == 0) + return &r_rel16; + if (strcasecmp (r_disp7.name, r_name) == 0) + return &r_disp7; + if (strcasecmp (r_callr.name, r_name) == 0) + return &r_callr; + if (strcasecmp (r_imm4l.name, r_name) == 0) + return &r_imm4l; + + return NULL; +} + +/* Perform any necessary 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 (arelent *relent, + struct internal_reloc *reloc, + asymbol **symbols, + bfd *abfd, + asection *section) +{ + relent->address = reloc->r_vaddr; + rtype2howto (relent, reloc); + + if (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; +} + +static void +extra_case (bfd *in_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) +{ + asection * input_section = link_order->u.indirect.section; + + switch (reloc->howto->type) + { + case R_IMM8: + bfd_put_8 (in_abfd, + bfd_coff_reloc16_get_value (reloc, link_info, input_section), + data + *dst_ptr); + (*dst_ptr) += 1; + (*src_ptr) += 1; + break; + + case R_IMM32: + /* If no flags are set, assume immediate value. */ + if (! (*reloc->sym_ptr_ptr)->section->flags) + { + bfd_put_32 (in_abfd, + bfd_coff_reloc16_get_value (reloc, link_info, + input_section), + data + *dst_ptr); + } + else + { + bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, + input_section); + /* Addresses are 23 bit, and the layout of those in a 32-bit + value is as follows: + 1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA + (A - address bits, x - ignore). */ + dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000; + bfd_put_32 (in_abfd, dst, data + *dst_ptr); + } + (*dst_ptr) += 4; + (*src_ptr) += 4; + break; + + case R_IMM4L: + bfd_put_8 (in_abfd, + ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) + | (0x0f + & bfd_coff_reloc16_get_value (reloc, link_info, + input_section))), + data + *dst_ptr); + (*dst_ptr) += 1; + (*src_ptr) += 1; + break; + + case R_IMM16: + bfd_put_16 (in_abfd, + bfd_coff_reloc16_get_value (reloc, link_info, input_section), + data + *dst_ptr); + (*dst_ptr) += 2; + (*src_ptr) += 2; + break; + + case R_JR: + { + bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, + input_section); + bfd_vma dot = (*dst_ptr + + input_section->output_offset + + input_section->output_section->vma); + int gap = dst - dot - 1; /* -1, since we're in the odd byte of the + word and the pc's been incremented. */ + + if (gap & 1) + abort (); + gap /= 2; + if (gap > 128 || gap < -128) + { + if (! ((*link_info->callbacks->reloc_overflow) + (link_info, NULL, + bfd_asymbol_name (*reloc->sym_ptr_ptr), + reloc->howto->name, reloc->addend, input_section->owner, + input_section, reloc->address))) + abort (); + } + bfd_put_8 (in_abfd, gap, data + *dst_ptr); + (*dst_ptr)++; + (*src_ptr)++; + break; + } + + case R_DISP7: + { + bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, + input_section); + bfd_vma dot = (*dst_ptr + + input_section->output_offset + + input_section->output_section->vma); + int gap = dst - dot - 1; /* -1, since we're in the odd byte of the + word and the pc's been incremented. */ + + if (gap & 1) + abort (); + gap /= 2; + + if (gap > 0 || gap < -127) + { + if (! ((*link_info->callbacks->reloc_overflow) + (link_info, NULL, + bfd_asymbol_name (*reloc->sym_ptr_ptr), + reloc->howto->name, reloc->addend, input_section->owner, + input_section, reloc->address))) + abort (); + } + bfd_put_8 (in_abfd, + (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f), + data + *dst_ptr); + (*dst_ptr)++; + (*src_ptr)++; + break; + } + + case R_CALLR: + { + bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, + input_section); + bfd_vma dot = (*dst_ptr + + input_section->output_offset + + input_section->output_section->vma); + int gap = dst - dot - 2; + + if (gap & 1) + abort (); + if (gap > 4096 || gap < -4095) + { + if (! ((*link_info->callbacks->reloc_overflow) + (link_info, NULL, + bfd_asymbol_name (*reloc->sym_ptr_ptr), + reloc->howto->name, reloc->addend, input_section->owner, + input_section, reloc->address))) + abort (); + } + gap /= 2; + bfd_put_16 (in_abfd, + (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff), + data + *dst_ptr); + (*dst_ptr) += 2; + (*src_ptr) += 2; + break; + } + + case R_REL16: + { + bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, + input_section); + bfd_vma dot = (*dst_ptr + + input_section->output_offset + + input_section->output_section->vma); + int gap = dst - dot - 2; + + if (gap > 32767 || gap < -32768) + { + if (! ((*link_info->callbacks->reloc_overflow) + (link_info, NULL, + bfd_asymbol_name (*reloc->sym_ptr_ptr), + reloc->howto->name, reloc->addend, input_section->owner, + input_section, reloc->address))) + abort (); + } + bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); + (*dst_ptr) += 2; + (*src_ptr) += 2; + break; + } + + default: + abort (); + } +} + +#define coff_reloc16_extra_cases extra_case +#define coff_bfd_reloc_type_lookup coff_z8k_reloc_type_lookup +#define coff_bfd_reloc_name_lookup coff_z8k_reloc_name_lookup + +#ifndef bfd_pe_print_pdata +#define bfd_pe_print_pdata NULL +#endif + +#include "coffcode.h" + +#undef coff_bfd_get_relocated_section_contents +#define coff_bfd_get_relocated_section_contents \ + bfd_coff_reloc16_get_relocated_section_contents + +#undef coff_bfd_relax_section +#define coff_bfd_relax_section bfd_coff_reloc16_relax_section + +CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL, COFF_SWAP_TABLE) |