/* BFD back-end for National Semiconductor's CR16C ELF
- Copyright 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2004-2019 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
+ 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,
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. */
+ 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 "elf/cr16c.h"
#define USE_REL 1 /* CR16C uses REL relocations instead of RELA. */
-/* The following definition is based on EMPTY_HOWTO macro,
+/* The following definition is based on EMPTY_HOWTO macro,
but also initiates the "name" field in HOWTO struct. */
#define ONLY_NAME_HOWTO(C) \
HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
STRINGX(C), FALSE, 0, 0, FALSE)
/* reloc_map_index array maps CRASM relocation type into a BFD
- relocation enum. The array's indices are synchronized with
+ relocation enum. The array's indices are synchronized with
RINDEX_16C_* indices, created in include/elf/cr16c.h.
The array is used in:
1. elf32-cr16c.c : elf_cr16c_reloc_type_lookup().
return 0;
}
-static void
+static reloc_howto_type *
+elf_cr16c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
+ if (elf_howto_table[i].name != NULL
+ && strcasecmp (elf_howto_table[i].name, r_name) == 0)
+ return &elf_howto_table[i];
+
+ return NULL;
+}
+
+static bfd_boolean
elf_cr16c_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr ATTRIBUTE_UNUSED,
Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
{
- abort ();
+ return FALSE;
}
-static void
+static bfd_boolean
elf_cr16c_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) RINDEX_16C_MAX);
+ if (r_type >= RINDEX_16C_MAX)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
cache_ptr->howto = &elf_howto_table[r_type];
+ return TRUE;
}
/* Perform a relocation as part of a final link. */
unsigned long format, addr_type, code_factor;
unsigned short size;
unsigned short r_type;
- asymbol *symbol = NULL;
unsigned long disp20_opcod;
char neg = 0;
addr_type = r_type & R_ADDRTYPE;
code_factor = ((addr_type == R_CODE_ADDR) ? 1 : 0);
- if (sym_sec)
- symbol = sym_sec->symbol;
-
switch (format)
{
case R_NUMBER:
switch (size)
{
- case R_S_16C_08: /* One byte. */
+ case R_S_16C_08: /* One byte. */
value = bfd_get_8 (abfd, (char *) data + octets);
break;
- case R_S_16C_16: /* Two bytes. */
+ case R_S_16C_16: /* Two bytes. */
sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
value = sword;
break;
case R_NUMBER:
switch (size)
{
- case R_S_16C_08: /* One byte. */
+ case R_S_16C_08: /* One byte. */
if (value > (int) MAX_UBYTE || value < MIN_BYTE)
return bfd_reloc_overflow;
value &= 0xFF;
if (neg2pos)
{
/* Change load/stor negative displ opcode
- to load/stor positive displ opcode. */
+ to load/stor positive displ opcode. */
value = bfd_get_8 (abfd, (char *) data + octets - 3);
value &= 0xF7;
value |= 0x2;
r_type = ELF32_R_TYPE (rel->r_info);
howto = elf_howto_table + r_type;
- if (info->relocatable)
- {
- /* This is a relocatable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
- continue;
- }
-
- /* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
}
else
{
- bfd_boolean unresolved_reloc, warned;
+ bfd_boolean unresolved_reloc, warned, ignored;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
- unresolved_reloc, warned);
+ unresolved_reloc, warned, ignored);
+ }
+
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
+
+ if (bfd_link_relocatable (info))
+ {
+ /* This is a relocatable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+ if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ rel->r_addend += sec->output_offset;
+ continue;
}
r = cr16c_elf_final_link_relocate (howto, input_bfd, output_bfd,
switch (r)
{
case bfd_reloc_overflow:
- if (!((*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section,
- rel->r_offset)))
- return FALSE;
+ (*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
- if (!((*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section,
- rel->r_offset, TRUE)))
- return FALSE;
+ (*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section, rel->r_offset, TRUE);
break;
case bfd_reloc_outofrange:
/* fall through */
common_error:
- if (!((*info->callbacks->warning)
- (info, msg, name, input_bfd, input_section,
- rel->r_offset)))
- return FALSE;
+ (*info->callbacks->warning) (info, msg, name, input_bfd,
+ input_section, rel->r_offset);
break;
}
}
return TRUE;
}
-static asection *
-elf32_cr16c_gc_mark_hook (asection *sec,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
-{
- if (h != NULL)
- {
- switch (ELF32_R_TYPE (rel->r_info))
- {
-
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
-
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
-
- default:
- break;
- }
- }
- }
- else
- {
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- }
-
- return NULL;
-}
-
-/* Update the got entry reference counts for the section being removed. */
-
-static bfd_boolean
-elf32_cr16c_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- asection *sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
-{
- /* We don't support garbage collection of GOT and PLT relocs yet. */
- return TRUE;
-}
-
/* CR16C ELF uses three common sections:
One is for default common symbols (placed in usual common section).
Second is for near common symbols (placed in "ncommon" section).
return TRUE;
}
-static bfd_boolean
+static int
elf32_cr16c_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
const char *name ATTRIBUTE_UNUSED,
Elf_Internal_Sym *sym,
sym->st_shndx = SHN_CR16C_NCOMMON;
}
- return TRUE;
+ return 1;
}
/* Definitions for setting CR16C target vector. */
-#define TARGET_LITTLE_SYM bfd_elf32_cr16c_vec
+#define TARGET_LITTLE_SYM cr16c_elf32_vec
#define TARGET_LITTLE_NAME "elf32-cr16c"
#define ELF_ARCH bfd_arch_cr16c
#define ELF_MACHINE_CODE EM_CR
#define elf_symbol_leading_char '_'
#define bfd_elf32_bfd_reloc_type_lookup elf_cr16c_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup elf_cr16c_reloc_name_lookup
#define elf_info_to_howto elf_cr16c_info_to_howto
#define elf_info_to_howto_rel elf_cr16c_info_to_howto_rel
#define elf_backend_relocate_section elf32_cr16c_relocate_section
-#define elf_backend_gc_mark_hook elf32_cr16c_gc_mark_hook
-#define elf_backend_gc_sweep_hook elf32_cr16c_gc_sweep_hook
#define elf_backend_symbol_processing elf32_cr16c_symbol_processing
-#define elf_backend_section_from_bfd_section elf32_cr16c_section_from_bfd_section
+#define elf_backend_section_from_bfd_section elf32_cr16c_section_from_bfd_section
#define elf_backend_add_symbol_hook elf32_cr16c_add_symbol_hook
-#define elf_backend_link_output_symbol_hook elf32_cr16c_link_output_symbol_hook
+#define elf_backend_link_output_symbol_hook elf32_cr16c_link_output_symbol_hook
#define elf_backend_can_gc_sections 1
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