/* M16C/M32C specific support for 32-bit ELF.
- Copyright (C) 2005-2020 Free Software Foundation, Inc.
+ Copyright (C) 2005-2021 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
/* Forward declarations. */
static reloc_howto_type * m32c_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
-static bfd_boolean m32c_info_to_howto_rela
+static bool m32c_info_to_howto_rela
(bfd *, arelent *, Elf_Internal_Rela *);
-static bfd_boolean m32c_elf_relocate_section
+static int m32c_elf_relocate_section
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
-static bfd_boolean m32c_elf_check_relocs
+static bool m32c_elf_check_relocs
(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
-static bfd_boolean m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
+static bool m32c_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
#ifdef DEBUG
char * m32c_get_reloc (long reloc);
void dump_symtab (bfd *, void *, void *);
#endif
-static bfd_boolean m32c_elf_relax_section
-(bfd *abfd, asection *sec, struct bfd_link_info *link_info, bfd_boolean *again);
+static bool m32c_elf_relax_section
+(bfd *abfd, asection *sec, struct bfd_link_info *link_info, bool *again);
static bfd_reloc_status_type m32c_apply_reloc_24
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
0, /* rightshift */
3, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_NONE", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
/* GCC intentionally overflows these next two in order to work
around limitations in the addressing modes, so don't complain
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_16", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m32c_apply_reloc_24, /* special_function */
"R_M32C_24", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_32", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_8_PCREL, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
- TRUE, /* pc_relative */
+ true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_8_PCREL", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
- TRUE), /* pcrel_offset */
+ true), /* pcrel_offset */
HOWTO (R_M32C_16_PCREL, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- TRUE, /* pc_relative */
+ true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_16_PCREL", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- TRUE), /* pcrel_offset */
+ true), /* pcrel_offset */
HOWTO (R_M32C_8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_8", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_LO16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_LO16", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_HI8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_HI8", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_HI16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_HI16", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_RL_JUMP, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_RL_JUMP", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_RL_1ADDR, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_RL_1ADDR", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
HOWTO (R_M32C_RL_2ADDR, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- FALSE, /* pc_relative */
+ false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M32C_RL_2ADDR", /* name */
- FALSE, /* partial_inplace */
+ false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- FALSE), /* pcrel_offset */
+ false), /* pcrel_offset */
};
\f
/* Set the howto pointer for an M32C ELF reloc. */
-static bfd_boolean
+static bool
m32c_info_to_howto_rela (bfd * abfd,
arelent * cache_ptr,
Elf_Internal_Rela * dst)
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
- return FALSE;
+ return false;
}
cache_ptr->howto = & m32c_elf_howto_table [r_type];
- return TRUE;
+ return true;
}
\f
section, which means that the addend must be adjusted
accordingly. */
-static bfd_boolean
+static int
m32c_elf_relocate_section
(bfd * output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info * info,
else if (!bfd_link_relocatable (info))
(*info->callbacks->undefined_symbol) (info, h->root.root.string,
input_bfd, input_section,
- rel->r_offset, TRUE);
+ rel->r_offset, true);
}
if (sec != NULL && discarded_section (sec))
case bfd_reloc_undefined:
(*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section, rel->r_offset, TRUE);
+ (info, name, input_bfd, input_section, rel->r_offset, true);
break;
case bfd_reloc_outofrange:
}
}
- return TRUE;
+ return true;
}
\f
/* We support 16-bit pointers to code above 64k by generating a thunk
below 64k containing a JMP instruction to the final address. */
-static bfd_boolean
+static bool
m32c_elf_check_relocs
(bfd * abfd,
struct bfd_link_info * info,
bfd *dynobj;
if (bfd_link_relocatable (info))
- return TRUE;
+ return true;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
elf_hash_table (info)->splt = splt;
if (splt == NULL
|| !bfd_set_section_alignment (splt, 1))
- return FALSE;
+ return false;
}
if (h != NULL)
size = symtab_hdr->sh_info * sizeof (bfd_vma);
local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size);
if (local_plt_offsets == NULL)
- return FALSE;
+ return false;
elf_local_got_offsets (abfd) = local_plt_offsets;
for (i = 0; i < symtab_hdr->sh_info; i++)
}
}
- return TRUE;
+ return true;
}
/* This must exist if dynobj is ever set. */
-static bfd_boolean
+static bool
m32c_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
}
}
- return TRUE;
+ return true;
}
-static bfd_boolean
+static bool
m32c_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
asection *splt;
if (bfd_link_relocatable (info))
- return TRUE;
+ return true;
dynobj = elf_hash_table (info)->dynobj;
if (dynobj == NULL)
- return TRUE;
+ return true;
splt = elf_hash_table (info)->splt;
BFD_ASSERT (splt != NULL);
splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size);
if (splt->contents == NULL)
- return FALSE;
+ return false;
- return TRUE;
+ return true;
}
\f
/* Function to set the ELF flag bits. */
-static bfd_boolean
+static bool
m32c_elf_set_private_flags (bfd *abfd, flagword flags)
{
elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = TRUE;
- return TRUE;
+ elf_flags_init (abfd) = true;
+ return true;
}
/* Merge backend specific data from an object file to the output
object file when linking. */
-static bfd_boolean
+static bool
m32c_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;
+ bool error = false;
char new_opt[80];
char old_opt[80];
if (!elf_flags_init (obfd))
{
/* First call, no flags set. */
- elf_flags_init (obfd) = TRUE;
+ elf_flags_init (obfd) = true;
elf_elfheader (obfd)->e_flags = new_flags;
}
/* Print out any mismatches from above. */
if (new_opt[0])
{
- error = TRUE;
+ error = true;
_bfd_error_handler
/* xgettext:c-format */
(_("%pB: compiled with %s and linked with modules compiled with %s"),
/* Warn about any other mismatches. */
if (new_flags != old_flags)
{
- error = TRUE;
+ error = true;
_bfd_error_handler
/* xgettext:c-format */
(_("%pB: uses different e_flags (%#x) fields"
}
\f
-static bfd_boolean
+static bool
m32c_elf_print_private_bfd_data (bfd *abfd, void *ptr)
{
FILE *file = (FILE *) ptr;
}
fputc ('\n', file);
- return TRUE;
+ return true;
}
/* Return the MACH for an e_flags value. */
return bfd_mach_m16c;
}
-static bfd_boolean
+static bool
m32c_elf_object_p (bfd *abfd)
{
bfd_default_set_arch_mach (abfd, bfd_arch_m32c,
elf32_m32c_machine (abfd));
- return TRUE;
+ return true;
}
\f
Elf_Internal_Sym *isymend;
Elf_Internal_Sym *isym;
Elf_Internal_Shdr *symtab_hdr;
- bfd_boolean free_internal = 0, free_external = 0;
+ bool free_internal = 0, free_external = 0;
char * st_info_str;
char * st_info_stb_str;
char * st_other_str;
struct relax_plt_data
{
asection *splt;
- bfd_boolean *again;
+ bool *again;
};
-static bfd_boolean
+static bool
m32c_relax_plt_check (struct elf_link_hash_entry *h, void * xdata)
{
struct relax_plt_data *data = (struct relax_plt_data *) xdata;
{
h->plt.offset = -1;
data->splt->size -= 4;
- *data->again = TRUE;
+ *data->again = true;
}
}
- return TRUE;
+ return true;
}
/* A subroutine of m32c_elf_relax_section. If the global symbol H
previously had a plt entry, give it a new entry offset. */
-static bfd_boolean
+static bool
m32c_relax_plt_realloc (struct elf_link_hash_entry *h, void * xdata)
{
bfd_vma *entry = (bfd_vma *) xdata;
*entry += 4;
}
- return TRUE;
+ return true;
}
-static bfd_boolean
+static bool
m32c_elf_relax_plt_section (asection *splt,
struct bfd_link_info *info,
- bfd_boolean *again)
+ bool *again)
{
struct relax_plt_data relax_plt_data;
bfd *ibfd;
/* Assume nothing changes. */
- *again = FALSE;
+ *again = false;
if (bfd_link_relocatable (info))
- return TRUE;
+ return true;
/* Quick check for an empty plt. */
if (splt->size == 0)
- return TRUE;
+ return true;
/* Map across all global symbols; see which ones happen to
fall in the low 64k. */
symtab_hdr->sh_info, 0,
NULL, NULL, NULL);
if (isymbuf == NULL)
- return FALSE;
+ return false;
}
for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
{
local_plt_offsets[idx] = -1;
splt->size -= 4;
- *again = TRUE;
+ *again = true;
}
}
}
}
- return TRUE;
+ return true;
}
static int
m32c_offset_for_reloc (bfd *abfd,
Elf_Internal_Rela *rel,
Elf_Internal_Shdr *symtab_hdr,
- Elf_External_Sym_Shndx *shndx_buf ATTRIBUTE_UNUSED,
+ bfd_byte *shndx_buf ATTRIBUTE_UNUSED,
Elf_Internal_Sym *intsyms)
{
bfd_vma symval;
/* If the displacement is within the given range and the new encoding
differs from the old encoding (the index), then the insn can be
relaxed to the new encoding. */
-typedef struct {
+typedef const struct {
int bytes;
unsigned int max_disp;
unsigned char new_encoding;
{ 0, 0, 31 }, /* */
};
-static bfd_boolean
-m32c_elf_relax_section
- (bfd * abfd,
- asection * sec,
- struct bfd_link_info * link_info,
- bfd_boolean * again)
+static bool
+m32c_elf_relax_section (bfd *abfd,
+ asection *sec,
+ struct bfd_link_info *link_info,
+ bool *again)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *shndx_hdr;
bfd_byte * free_contents = NULL;
Elf_Internal_Sym *intsyms = NULL;
Elf_Internal_Sym *free_intsyms = NULL;
- Elf_External_Sym_Shndx *shndx_buf = NULL;
+ bfd_byte *shndx_buf = NULL;
int machine;
- if (abfd == elf_hash_table (link_info)->dynobj
+ if (is_elf_hash_table (link_info->hash)
+ && abfd == elf_hash_table (link_info)->dynobj
&& (sec->flags & SEC_LINKER_CREATED) != 0
&& strcmp (sec->name, ".plt") == 0)
return m32c_elf_relax_plt_section (sec, link_info, again);
/* Assume nothing changes. */
- *again = FALSE;
+ *again = false;
machine = elf32_m32c_machine (abfd);
|| (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
|| (sec->flags & SEC_CODE) == 0)
- return TRUE;
+ return true;
symtab_hdr = & elf_symtab_hdr (abfd);
if (elf_symtab_shndx_list (abfd))
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
- shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
- if (shndx_buf == NULL)
+ if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0)
goto error_return;
- if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (shndx_buf, amt, abfd) != amt)
+ shndx_buf = _bfd_malloc_and_read (abfd, amt, amt);
+ if (shndx_buf == NULL)
goto error_return;
- shndx_hdr->contents = (bfd_byte *) shndx_buf;
+ shndx_hdr->contents = shndx_buf;
}
/* Get a copy of the native relocations. */
if (gap_size == 0)
continue;
- *again = TRUE;
+ *again = true;
srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), new_type);
} /* next relocation */
- if (free_relocs != NULL)
- {
- free (free_relocs);
- free_relocs = NULL;
- }
+ free (free_relocs);
+ free_relocs = NULL;
if (free_contents != NULL)
{
/* Cache the symbols for elf_link_input_bfd. */
else
{
- symtab_hdr->contents = NULL /* (unsigned char *) intsyms*/;
+ symtab_hdr->contents = NULL /* (unsigned char *) intsyms*/;
}
free_intsyms = NULL;
}
- return TRUE;
+ return true;
error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
+ free (free_relocs);
+ free (free_contents);
if (shndx_buf != NULL)
{
shndx_hdr->contents = NULL;
free (shndx_buf);
}
- if (free_intsyms != NULL)
- free (free_intsyms);
- return FALSE;
+ free (free_intsyms);
+ return false;
}
/* Delete some bytes from a section while relaxing. */
-static bfd_boolean
-m32c_elf_relax_delete_bytes
- (bfd * abfd,
- asection * sec,
- bfd_vma addr,
- int count)
+static bool
+m32c_elf_relax_delete_bytes (bfd *abfd,
+ asection *sec,
+ bfd_vma addr,
+ int count)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *shndx_hdr;
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- symtab_hdr->sh_info);
sym_hashes = elf_sym_hashes (abfd);
- // sym_hashes += symtab_hdr->sh_info;
end_hashes = sym_hashes + symcount;
for (; sym_hashes < end_hashes; sym_hashes ++)
}
}
- return TRUE;
+ return true;
}
\f
/* This is for versions of gcc prior to 4.3. */
projects / deliverable / binutils-gdb.git / blobdiff