/* BFD back-end for National Semiconductor's CR16C ELF
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright 2004, 2005, 2006, 2007, 2009, 2010
+ 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"
return 0;
}
+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 void
elf_cr16c_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr ATTRIBUTE_UNUSED,
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:
return bfd_reloc_overflow;
value &= 0xFF;
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_16: /* Two bytes. */
if (value > (int) MAX_UWORD || value < MIN_WORD)
return bfd_reloc_overflow;
sword = value;
bfd_put_16 (abfd, (bfd_vma) sword,
(unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_32: /* Four bytes. */
value &= 0xFFFFFFFF;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
default:
return bfd_reloc_notsupported;
}
value <<= 4;
value |= left_val;
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_08: /* word1(0-3,8-11). */
if (value > 255 || value < -256 || value == 0x80)
return bfd_reloc_overflow;
sword |= left_val;
bfd_put_16 (abfd, (bfd_vma) sword,
(unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_16: /* word2. */
if (value > 65535 || value < -65536)
return bfd_reloc_overflow;
sword = value;
bfd_put_16 (abfd, (bfd_vma) sword,
(unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_24_a: /* word1(0-7),word2. */
if (value > 16777215 || value < -16777216)
return bfd_reloc_overflow;
((value & 0x00800000) >> 7) | ((value & 0x007F8000) >> 15);
value |= left_val;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_24: /* word2(0-3,8-11),word3. */
if (value > 16777215 || value < -16777216)
return bfd_reloc_overflow;
((value & 0x000F0000) >> 8) | ((value & 0x00F00000) >> 20);
value |= left_val;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
default:
return bfd_reloc_notsupported;
}
value &= 0xF;
value |= left_val;
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_04_a: /* word1(12-15) not scaled. */
if (value > 26 || value < 0)
return bfd_reloc_overflow;
value >>= 1;
value |= left_val;
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_14: /* word1(4-5),word2(0-3,8-15). */
if (value < 0 || value > 16383)
return bfd_reloc_overflow;
((value & 0x0000000F) << 16) | (value & 0x00000030);
value |= left_val;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_16: /* word2. */
if (value > 65535 || value < 0)
return bfd_reloc_overflow;
sword = value;
bfd_put_16 (abfd, (bfd_vma) sword,
(unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_20: /* word2(8-11),word3. */
/* if (value > 1048575 || value < 0) RELOC_ERROR(1); */
value &= 0xFFFFF;
bfd_put_8 (abfd, (bfd_vma) value,
(unsigned char *) data + octets - 3);
}
- return bfd_reloc_ok;
break;
+
default:
return bfd_reloc_notsupported;
}
((value & 0x000F0000) >> 16);
value |= left_val;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_24: /* word2(0-3,8-11),word3. */
/* if (value > 16777215 || value < 0) RELOC_ERROR(1); */
value &= 0xFFFFFF;
((value & 0x000F0000) >> 8) | ((value & 0x00F00000) >> 20);
value |= left_val;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
default:
return bfd_reloc_notsupported;
}
value <<= 4;
value |= left_val;
bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_16: /* word2. */
if (value > 32767 || value < -32768)
return bfd_reloc_overflow;
sword = value;
bfd_put_16 (abfd, (bfd_vma) sword,
(unsigned char *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_20: /* word1(0-3),word2. */
if (value > 1048575 || value < 0)
return bfd_reloc_overflow;
((value & 0x000F0000) >> 16);
value |= left_val;
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
case R_S_16C_32: /* word2, word3. */
value &= 0xFFFFFFFF;
value = ((value & 0x0000FFFF) << 16) |
((value & 0xFFFF0000) >> 16);
bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
break;
+
default:
return bfd_reloc_notsupported;
}
default:
return bfd_reloc_notsupported;
}
+
+ return bfd_reloc_ok;
}
/* Relocate a CR16C ELF section. */
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;
unresolved_reloc, warned);
}
+ if (sec != NULL && elf_discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, relend, howto, contents);
+
+ 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 (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,
input_section,
contents, rel->r_offset,
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 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_add_symbol_hook elf32_cr16c_add_symbol_hook
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