/* M16C/M32C specific support for 32-bit ELF.
- Copyright (C) 2005-2021 Free Software Foundation, Inc.
+ Copyright (C) 2005-2023 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 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 **);
/* This reloc does nothing. */
HOWTO (R_M32C_NONE, /* type */
0, /* rightshift */
- 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* size */
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
about overflow. */
HOWTO (R_M32C_16, /* type */
0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 2, /* size */
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) */
+ 4, /* size */
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) */
+ 4, /* size */
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) */
+ 1, /* size */
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) */
+ 2, /* size */
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) */
+ 1, /* size */
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) */
+ 2, /* size */
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) */
+ 1, /* size */
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) */
+ 2, /* size */
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, /* size */
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, /* size */
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, /* size */
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
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
{ 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;
return m32c_elf_relax_plt_section (sec, link_info, again);
/* Assume nothing changes. */
- *again = FALSE;
+ *again = false;
machine = elf32_m32c_machine (abfd);
this section does not have relocs, or if this is not a
code section. */
if (bfd_link_relocatable (link_info)
- || (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
+ || (sec->flags & SEC_RELOC) == 0
+ || (sec->flags & SEC_HAS_CONTENTS) == 0
|| (sec->flags & SEC_CODE) == 0)
- return TRUE;
+ return true;
symtab_hdr = & elf_symtab_hdr (abfd);
if (elf_symtab_shndx_list (abfd))
if (gap_size == 0)
continue;
- *again = TRUE;
+ *again = true;
srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), new_type);
free_intsyms = NULL;
}
- return TRUE;
+ return true;
error_return:
free (free_relocs);
free (shndx_buf);
}
free (free_intsyms);
- return FALSE;
+ 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;
}
}
- return TRUE;
+ return true;
}
\f
/* This is for versions of gcc prior to 4.3. */