/* BFD back-end for Zilog Z800n COFF binaries.
- Copyright 1992, 93, 94, 95, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1992-2024 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 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 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.
+ 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. */
+ 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 "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "coff/z8k.h"
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
static reloc_howto_type r_imm32 =
-HOWTO (R_IMM32, 0, 1, 32, false, 0,
+HOWTO (R_IMM32, 0, 4, 32, false, 0,
complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
0xffffffff, false);
complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);
static reloc_howto_type r_da =
-HOWTO (R_IMM16, 0, 1, 16, false, 0,
+HOWTO (R_IMM16, 0, 2, 16, false, 0,
complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
false);
complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
false);
-static reloc_howto_type r_jr =
-HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0,
- "r_jr", true, 0, 0, true);
+static reloc_howto_type r_rel16 =
+HOWTO (R_REL16, 0, 2, 16, false, 0,
+ complain_overflow_bitfield, 0, "r_rel16", true, 0x0000ffff, 0x0000ffff,
+ true);
-/* Turn a howto into a reloc number */
-
-static int
-coff_z8k_select_reloc (howto)
- reloc_howto_type *howto;
-{
- return howto->type;
-}
+static reloc_howto_type r_jr =
+HOWTO (R_JR, 1, 1, 8, true, 0, complain_overflow_signed, 0,
+ "r_jr", true, 0xff, 0xff, true);
-#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
+static reloc_howto_type r_disp7 =
+HOWTO (R_DISP7, 0, 1, 7, true, 0, complain_overflow_bitfield, 0,
+ "r_disp7", true, 0x7f, 0x7f, true);
+static reloc_howto_type r_callr =
+HOWTO (R_CALLR, 1, 2, 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 Z8K 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
+/* 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
- */
+/* 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;
+rtype2howto (arelent *internal, struct internal_reloc *dst)
{
switch (dst->r_type)
{
default:
- abort ();
+ internal->howto = NULL;
break;
case R_IMM8:
internal->howto = &r_imm8;
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;
}
}
-#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
+#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;
+ }
+}
-/* Perform any necessary magic to the addend in a reloc entry */
+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 (relent, reloc, symbols, abfd, section)
- arelent * relent;
- struct internal_reloc *reloc;
- asymbol ** symbols;
- bfd * abfd;
- asection * 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];
- }
+ if (reloc->r_symndx == -1 || symbols == NULL)
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ else if (reloc->r_symndx >= 0 && reloc->r_symndx < obj_conv_table_size (abfd))
+ relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
else
{
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: warning: illegal symbol index %ld in relocs"),
+ abfd, reloc->r_symndx);
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
}
-
-
relent->addend = reloc->r_offset;
relent->address -= section->vma;
}
-static void
-extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
- 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;
+static bool
+extra_case (bfd *in_abfd,
+ struct bfd_link_info *link_info,
+ struct bfd_link_order *link_order,
+ arelent *reloc,
+ bfd_byte *data,
+ size_t *src_ptr,
+ size_t *dst_ptr)
{
- asection *input_section = link_order->u.indirect.section;
+ asection * input_section = link_order->u.indirect.section;
+ bfd_size_type end = bfd_get_section_limit_octets (in_abfd, input_section);
+ bfd_size_type reloc_size = bfd_get_reloc_size (reloc->howto);
+
+ if (*src_ptr > end
+ || reloc_size > end - *src_ptr)
+ {
+ link_info->callbacks->einfo
+ /* xgettext:c-format */
+ (_("%X%P: %pB(%pA): relocation \"%pR\" goes out of range\n"),
+ in_abfd, input_section, reloc);
+ return false;
+ }
switch (reloc->howto->type)
{
bfd_put_8 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
data + *dst_ptr);
- (*dst_ptr) += 1;
- (*src_ptr) += 1;
+ *dst_ptr += 1;
+ *src_ptr += 1;
break;
case R_IMM32:
- bfd_put_32 (in_abfd,
- bfd_coff_reloc16_get_value (reloc, link_info, input_section),
- data + *dst_ptr);
- (*dst_ptr) += 4;
- (*src_ptr) += 4;
+ /* 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))),
+ ((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;
+ *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;
+ *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 = (link_order->offset
- + *dst_ptr
+ bfd_vma dot = (*dst_ptr
+ + input_section->output_offset
+ + input_section->output_section->vma);
+ /* -1, since we're in the odd byte of the word and the pc has
+ been incremented. */
+ bfd_signed_vma gap = dst - dot - 1;
+
+ if ((gap & 1) != 0 || gap > 254 || gap < -256)
+ {
+ 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);
+ return false;
+ }
+
+ bfd_put_8 (in_abfd, gap / 2, data + *dst_ptr);
+ *dst_ptr += 1;
+ *src_ptr += 1;
+ 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);
+ bfd_signed_vma gap = dst - dot - 1;
+
+ if ((gap & 1) != 0 || gap > 0 || gap < -254)
+ {
+ 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);
+ return false;
+ }
+
+ bfd_put_8 (in_abfd,
+ ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0x80)
+ + (-gap / 2 & 0x7f)),
+ data + *dst_ptr);
+ *dst_ptr += 1;
+ *src_ptr += 1;
+ 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 - 1;/* -1 since were in the odd byte of the
- word and the pc's been incremented */
+ bfd_signed_vma gap = dst - dot - 2;
- if (gap & 1)
- abort ();
- gap /= 2;
- if (gap > 128 || gap < -128)
+ if ((gap & 1) != 0 || gap > 4096 || gap < -4095)
{
- 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 ();
+ 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);
+ return false;
}
- bfd_put_8 (in_abfd, gap, data + *dst_ptr);
- (*dst_ptr)++;
- (*src_ptr)++;
+
+ bfd_put_16 (in_abfd,
+ ((bfd_get_16 (in_abfd, data + *dst_ptr) & 0xf000)
+ | (-gap / 2 & 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);
+ bfd_signed_vma gap = dst - dot - 2;
+
+ if (gap > 32767 || gap < -32768)
+ {
+ 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);
+ return false;
+ }
+
+ bfd_put_16 (in_abfd, gap, data + *dst_ptr);
+ *dst_ptr += 2;
+ *src_ptr += 2;
+ break;
+ }
+
default:
- abort ();
+ link_info->callbacks->einfo
+ /* xgettext:c-format */
+ (_("%X%P: %pB(%pA): relocation \"%pR\" is not supported\n"),
+ in_abfd, input_section, reloc);
+ return false;
}
+ return true;
}
-#define coff_reloc16_extra_cases extra_case
+#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
-#include "coffcode.h"
+#ifndef bfd_pe_print_pdata
+#define bfd_pe_print_pdata NULL
+#endif
+#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
+
+#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)
+CREATE_BIG_COFF_TARGET_VEC (z8k_coff_vec, "coff-z8k", 0, 0, '_', NULL, COFF_SWAP_TABLE)
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