/* IQ2000-specific support for 32-bit ELF.
- Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 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,
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 "elf-bfd.h"
#include "elf/iq2000.h"
+#include "libiberty.h"
/* Forward declarations. */
HOWTO (R_IQ2000_NONE, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_IQ2000_NONE", /* name */
FALSE, /* partial_inplace */
bfd_vma insn;
insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
-
+
value += relhi->r_addend;
value &= 0x7fffffff; /* Mask off top-bit which is Harvard mask bit. */
if (value & 0x8000)
value += 0x10000;
- value >>= 16;
+ value >>= 16;
insn = ((insn & ~0xFFFF) | value);
bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
return bfd_reloc_ok;
}
+static bfd_reloc_status_type
+iq2000_elf_relocate_offset16 (bfd *input_bfd,
+ Elf_Internal_Rela *rel,
+ bfd_byte *contents,
+ bfd_vma value,
+ bfd_vma location)
+{
+ bfd_vma insn;
+ bfd_vma jtarget;
+
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+
+ value += rel->r_addend;
+
+ if (value & 3)
+ return bfd_reloc_dangerous;
+
+ jtarget = (value & 0x3fffc) | (location & 0xf0000000L);
+
+ if (jtarget != value)
+ return bfd_reloc_overflow;
+
+ insn = (insn & ~0xFFFF) | ((value >> 2) & 0xFFFF);
+
+ bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ return bfd_reloc_ok;
+}
+
/* Map BFD reloc types to IQ2000 ELF reloc types. */
static reloc_howto_type *
return NULL;
}
+static reloc_howto_type *
+iq2000_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (iq2000_elf_howto_table)
+ / sizeof (iq2000_elf_howto_table[0]));
+ i++)
+ if (iq2000_elf_howto_table[i].name != NULL
+ && strcasecmp (iq2000_elf_howto_table[i].name, r_name) == 0)
+ return &iq2000_elf_howto_table[i];
+
+ if (strcasecmp (iq2000_elf_vtinherit_howto.name, r_name) == 0)
+ return &iq2000_elf_vtinherit_howto;
+ if (strcasecmp (iq2000_elf_vtentry_howto.name, r_name) == 0)
+ return &iq2000_elf_vtentry_howto;
+
+ return NULL;
+}
\f
/* Perform a single relocation. By default we use the standard BFD
routines. */
\f
/* Set the howto pointer for a IQ2000 ELF reloc. */
-static void
+static bfd_boolean
iq2000_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
arelent * cache_ptr,
Elf_Internal_Rela * dst)
break;
default:
+ if (r_type >= ARRAY_SIZE (iq2000_elf_howto_table))
+ {
+ /* 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 = & iq2000_elf_howto_table [r_type];
break;
}
+ return TRUE;
}
/* Look through the relocs for a section during the first phase.
Since we don't do .gots or .plts, we just need to consider the
virtual table relocs for gc. */
-
+
static bfd_boolean
iq2000_elf_check_relocs (bfd *abfd,
struct bfd_link_info *info,
const Elf_Internal_Rela *relocs)
{
Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+ struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
bfd_boolean changed = FALSE;
-
- if (info->relocatable)
+
+ if (bfd_link_relocatable (info))
return TRUE;
-
+
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
- sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
-
+
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
struct elf_link_hash_entry *h;
unsigned long r_symndx;
-
+
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
-
+
switch (ELF32_R_TYPE (rel->r_info))
{
/* This relocation describes the C++ object vtable
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
return FALSE;
break;
-
+
/* This relocation describes which C++ vtable entries
are actually used. Record for later use during GC. */
case R_IQ2000_GNU_VTENTRY:
case R_IQ2000_32:
/* For debug section, change to special harvard-aware relocations. */
- if (memcmp (sec->name, ".debug", 6) == 0
- || memcmp (sec->name, ".stab", 5) == 0
- || memcmp (sec->name, ".eh_frame", 9) == 0)
+ if (CONST_STRNEQ (sec->name, ".debug")
+ || CONST_STRNEQ (sec->name, ".stab")
+ || CONST_STRNEQ (sec->name, ".eh_frame"))
{
((Elf_Internal_Rela *) rel)->r_info
= ELF32_R_INFO (ELF32_R_SYM (rel->r_info), R_IQ2000_32_DEBUG);
Elf_Internal_Rela * rel;
Elf_Internal_Rela * relend;
- if (info->relocatable)
- return TRUE;
-
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
relend = relocs + input_section->reloc_count;
bfd_reloc_status_type r;
const char * name = NULL;
int r_type;
-
+
r_type = ELF32_R_TYPE (rel->r_info);
-
+
if ( r_type == R_IQ2000_GNU_VTINHERIT
|| r_type == R_IQ2000_GNU_VTENTRY)
continue;
-
+
r_symndx = ELF32_R_SYM (rel->r_info);
- /* This is a final link. */
howto = iq2000_elf_howto_table + ELF32_R_TYPE (rel->r_info);
h = NULL;
sym = NULL;
sec = NULL;
-
+
if (r_symndx < symtab_hdr->sh_info)
{
+ asection *osec;
+
sym = local_syms + r_symndx;
- sec = local_sections [r_symndx];
+ osec = sec = local_sections [r_symndx];
+ if ((sec->flags & SEC_MERGE)
+ && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ /* This relocation is relative to a section symbol that is
+ going to be merged. Change it so that it is relative
+ to the merged section symbol. */
+ rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym, &sec,
+ rel->r_addend);
+
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
-
+
name = bfd_elf_string_from_elf_section
(input_bfd, symtab_hdr->sh_link, sym->st_name);
- name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
+ name = name == NULL ? bfd_section_name (osec) : name;
}
else
{
bfd_boolean unresolved_reloc;
- bfd_boolean warned;
+ bfd_boolean 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);
name = h->root.root.string;
}
+ 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))
+ continue;
+
switch (r_type)
{
case R_IQ2000_HI16:
r = iq2000_elf_relocate_hi16 (input_bfd, rel, contents, relocation);
break;
+ case R_IQ2000_OFFSET_16:
+ r = iq2000_elf_relocate_offset16 (input_bfd, rel, contents, relocation,
+ input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+ break;
+
case R_IQ2000_PC16:
rel->r_addend -= 4;
/* Fall through. */
switch (r)
{
case bfd_reloc_overflow:
- r = info->callbacks->reloc_overflow
+ (*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:
- r = info->callbacks->undefined_symbol
+ (*info->callbacks->undefined_symbol)
(info, name, input_bfd, input_section, rel->r_offset, TRUE);
break;
-
+
case bfd_reloc_outofrange:
msg = _("internal error: out of range error");
break;
}
if (msg)
- r = info->callbacks->warning
- (info, msg, name, input_bfd, input_section, rel->r_offset);
-
- if (! r)
- return FALSE;
+ (*info->callbacks->warning) (info, msg, name, input_bfd,
+ input_section, rel->r_offset);
}
}
}
\f
-/* Update the got entry reference counts for the section being
- removed. */
-
-static bfd_boolean
-iq2000_elf_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)
-{
- return TRUE;
-}
-
/* Return the section that should be marked against GC for a given
relocation. */
static asection *
-iq2000_elf_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)
+iq2000_elf_gc_mark_hook (asection *sec,
+ struct bfd_link_info *info,
+ Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
- if (h == NULL)
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
-
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_IQ2000_GNU_VTINHERIT:
- case R_IQ2000_GNU_VTENTRY:
- break;
-
- 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;
- }
- }
-
- return NULL;
+ if (h != NULL)
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_IQ2000_GNU_VTINHERIT:
+ case R_IQ2000_GNU_VTENTRY:
+ return NULL;
+ }
+
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
\f
return TRUE;
}
-/* Copy backend specific data from one object module to another. */
-
-static bfd_boolean
-iq2000_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
-{
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return TRUE;
-
- BFD_ASSERT (!elf_flags_init (obfd)
- || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
-
- elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
- elf_flags_init (obfd) = TRUE;
- return TRUE;
-}
-
/* Merge backend specific data from an object
file to the output object file when linking. */
static bfd_boolean
-iq2000_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+iq2000_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
{
+ bfd *obfd = info->output_bfd;
flagword old_flags, old_partial;
flagword new_flags, new_partial;
bfd_boolean error = FALSE;
break;
}
}
-
+
/* Print out any mismatches from above. */
if (new_opt[0])
{
error = TRUE;
_bfd_error_handler
- (_("%s: compiled with %s and linked with modules compiled with %s"),
- bfd_get_filename (ibfd), new_opt, old_opt);
+ /* xgettext:c-format */
+ (_("%pB: compiled with %s and linked with modules compiled with %s"),
+ ibfd, new_opt, old_opt);
}
new_flags &= ~ EF_IQ2000_ALL_FLAGS;
error = TRUE;
_bfd_error_handler
- (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
- bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
+ /* xgettext:c-format */
+ (_("%pB: uses different e_flags (%#x) fields than previous modules (%#x)"),
+ ibfd, new_flags, old_flags);
}
}
_bfd_elf_print_private_bfd_data (abfd, ptr);
flags = elf_elfheader (abfd)->e_flags;
- fprintf (file, _("private flags = 0x%lx:"), (long)flags);
+ fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);
switch (flags & EF_IQ2000_CPU_MASK)
{
#define ELF_MACHINE_CODE EM_IQ2000
#define ELF_MAXPAGESIZE 0x1000
-#define TARGET_BIG_SYM bfd_elf32_iq2000_vec
+#define TARGET_BIG_SYM iq2000_elf32_vec
#define TARGET_BIG_NAME "elf32-iq2000"
#define elf_info_to_howto_rel NULL
#define elf_info_to_howto iq2000_info_to_howto_rela
#define elf_backend_relocate_section iq2000_elf_relocate_section
#define elf_backend_gc_mark_hook iq2000_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook iq2000_elf_gc_sweep_hook
#define elf_backend_check_relocs iq2000_elf_check_relocs
#define elf_backend_object_p iq2000_elf_object_p
#define elf_backend_rela_normal 1
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_reloc_type_lookup iq2000_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup iq2000_reloc_name_lookup
#define bfd_elf32_bfd_set_private_flags iq2000_elf_set_private_flags
-#define bfd_elf32_bfd_copy_private_bfd_data iq2000_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data iq2000_elf_merge_private_bfd_data
#define bfd_elf32_bfd_print_private_bfd_data iq2000_elf_print_private_bfd_data
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