/* Assorted BFD support routines, only used internally.
- Copyright (C) 1990-2020 Free Software Foundation, Inc.
+ Copyright (C) 1990-2021 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
completeness.
*/
-bfd_boolean
+bool
_bfd_bool_bfd_false (bfd *abfd ATTRIBUTE_UNUSED)
{
- return FALSE;
+ return false;
}
-bfd_boolean
+bool
_bfd_bool_bfd_asymbol_false (bfd *abfd ATTRIBUTE_UNUSED,
asymbol *sym ATTRIBUTE_UNUSED)
{
- return FALSE;
+ return false;
}
/* A routine which is used in target vectors for unsupported
operations. */
-bfd_boolean
+bool
_bfd_bool_bfd_false_error (bfd *ignore ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
- return FALSE;
+ return false;
}
-bfd_boolean
+bool
_bfd_bool_bfd_link_false_error (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
/* A routine which is used in target vectors for supported operations
which do not actually do anything. */
-bfd_boolean
+bool
_bfd_bool_bfd_true (bfd *ignore ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_bool_bfd_link_true (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_bool_bfd_bfd_true (bfd *ibfd ATTRIBUTE_UNUSED,
bfd *obfd ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_bool_bfd_uint_true (bfd *abfd ATTRIBUTE_UNUSED,
unsigned int flags ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_bool_bfd_asection_bfd_asection_true (bfd *ibfd ATTRIBUTE_UNUSED,
asection *isec ATTRIBUTE_UNUSED,
bfd *obfd ATTRIBUTE_UNUSED,
asection *osec ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_bool_bfd_asymbol_bfd_asymbol_true (bfd *ibfd ATTRIBUTE_UNUSED,
asymbol *isym ATTRIBUTE_UNUSED,
bfd *obfd ATTRIBUTE_UNUSED,
asymbol *osym ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_bool_bfd_ptr_true (bfd *abfd ATTRIBUTE_UNUSED,
void *ptr ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}
/* A routine which is used in target vectors for unsupported
/* Do nothing. */
}
-bfd_boolean
+bool
_bfd_nocore_core_file_matches_executable_p
(bfd *ignore_core_bfd ATTRIBUTE_UNUSED,
bfd *ignore_exec_bfd ATTRIBUTE_UNUSED)
{
bfd_set_error (bfd_error_invalid_operation);
- return FALSE;
+ return false;
}
/* Routine to handle core_file_failing_command entry point for targets
#define SSIZE_MAX ((size_t) -1 >> 1)
#endif
+/*
+INTERNAL_FUNCTION
+ bfd_malloc
+
+SYNOPSIS
+ extern void * bfd_malloc (bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
+
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then it will be treated as if it were
+ 1. If SIZE is too big then NULL will be returned.
+
+ Returns NULL upon error and sets bfd_error.
+*/
void *
bfd_malloc (bfd_size_type size)
{
return NULL;
}
- ptr = malloc (sz);
- if (ptr == NULL && sz != 0)
+ ptr = malloc (sz ? sz : 1);
+ if (ptr == NULL)
bfd_set_error (bfd_error_no_memory);
return ptr;
}
+/*
+INTERNAL_FUNCTION
+ bfd_realloc
+
+SYNOPSIS
+ extern void * bfd_realloc (void * MEM, bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
+
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then it will be treated as if it were
+ 1. If SIZE is too big then NULL will be returned.
+
+ If MEM is not NULL then it must point to an allocated block of memory.
+ If this block is large enough then MEM may be used as the return
+ value for this function, but this is not guaranteed.
+
+ If MEM is not returned then the first N bytes in the returned block
+ will be identical to the first N bytes in region pointed to by MEM,
+ where N is the lessor of SIZE and the length of the region of memory
+ currently addressed by MEM.
+
+ Returns NULL upon error and sets bfd_error.
+*/
void *
bfd_realloc (void *ptr, bfd_size_type size)
{
return NULL;
}
- ret = realloc (ptr, sz);
+ /* The behaviour of realloc(0) is implementation defined,
+ but for this function we always allocate memory. */
+ ret = realloc (ptr, sz ? sz : 1);
- if (ret == NULL && sz != 0)
+ if (ret == NULL)
bfd_set_error (bfd_error_no_memory);
return ret;
}
-/* Reallocate memory using realloc.
- If this fails the pointer is freed before returning. */
+/*
+INTERNAL_FUNCTION
+ bfd_realloc_or_free
+SYNOPSIS
+ extern void * bfd_realloc_or_free (void * MEM, bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
+
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then no memory will be allocated,
+ MEM will be freed, and NULL will be returned. This will not cause
+ bfd_error to be set.
+
+ If SIZE is too big then NULL will be returned and bfd_error will be
+ set.
+
+ If MEM is not NULL then it must point to an allocated block of memory.
+ If this block is large enough then MEM may be used as the return
+ value for this function, but this is not guaranteed.
+
+ If MEM is not returned then the first N bytes in the returned block
+ will be identical to the first N bytes in region pointed to by MEM,
+ where N is the lessor of SIZE and the length of the region of memory
+ currently addressed by MEM.
+*/
void *
bfd_realloc_or_free (void *ptr, bfd_size_type size)
{
- void *ret = bfd_realloc (ptr, size);
+ void *ret;
+ /* The behaviour of realloc(0) is implementation defined, but
+ for this function we treat it is always freeing the memory. */
+ if (size == 0)
+ {
+ free (ptr);
+ return NULL;
+ }
+
+ ret = bfd_realloc (ptr, size);
if (ret == NULL)
free (ptr);
return ret;
}
-/* Allocate memory using malloc and clear it. */
+/*
+INTERNAL_FUNCTION
+ bfd_zmalloc
+SYNOPSIS
+ extern void * bfd_zmalloc (bfd_size_type SIZE) ATTRIBUTE_HIDDEN;
+
+DESCRIPTION
+ Returns a pointer to an allocated block of memory that is at least
+ SIZE bytes long. If SIZE is 0 then it will be treated as if it were
+ 1. If SIZE is too big then NULL will be returned.
+
+ Returns NULL upon error and sets bfd_error.
+
+ If NULL is not returned then the allocated block of memory will
+ have been cleared.
+*/
void *
bfd_zmalloc (bfd_size_type size)
{
void *ptr = bfd_malloc (size);
- if (ptr != NULL && size > 0)
- memset (ptr, 0, (size_t) size);
+ if (ptr != NULL)
+ memset (ptr, 0, size ? (size_t) size : 1);
return ptr;
}
bfd_write_bigendian_4byte_int
SYNOPSIS
- bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int);
+ bool bfd_write_bigendian_4byte_int (bfd *, unsigned int);
DESCRIPTION
Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big
archives.
*/
-bfd_boolean
+bool
bfd_write_bigendian_4byte_int (bfd *abfd, unsigned int i)
{
bfd_byte buffer[4];
}
void
-bfd_put_bits (bfd_uint64_t data, void *p, int bits, bfd_boolean big_p)
+bfd_put_bits (bfd_uint64_t data, void *p, int bits, bool big_p)
{
bfd_byte *addr = (bfd_byte *) p;
int i;
}
bfd_uint64_t
-bfd_get_bits (const void *p, int bits, bfd_boolean big_p)
+bfd_get_bits (const void *p, int bits, bool big_p)
{
const bfd_byte *addr = (const bfd_byte *) p;
bfd_uint64_t data;
\f
/* Default implementation */
-bfd_boolean
+bool
_bfd_generic_get_section_contents (bfd *abfd,
sec_ptr section,
void *location,
{
bfd_size_type sz;
if (count == 0)
- return TRUE;
+ return true;
if (section->compress_status != COMPRESS_SECTION_NONE)
{
(_("%pB: unable to get decompressed section %pA"),
abfd, section);
bfd_set_error (bfd_error_invalid_operation);
- return FALSE;
+ return false;
}
/* We do allow reading of a section after bfd_final_link has
> arelt_size (abfd))))
{
bfd_set_error (bfd_error_invalid_operation);
- return FALSE;
+ return false;
}
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
|| bfd_bread (location, count, abfd) != count)
- return FALSE;
+ return false;
- return TRUE;
+ return true;
}
-bfd_boolean
+bool
_bfd_generic_get_section_contents_in_window
(bfd *abfd ATTRIBUTE_UNUSED,
sec_ptr section ATTRIBUTE_UNUSED,
bfd_size_type sz;
if (count == 0)
- return TRUE;
+ return true;
if (abfd->xvec->_bfd_get_section_contents
!= _bfd_generic_get_section_contents)
{
bfd_free_window (w);
w->i = bfd_zmalloc (sizeof (bfd_window_internal));
if (w->i == NULL)
- return FALSE;
+ return false;
w->i->data = bfd_malloc (count);
if (w->i->data == NULL)
{
free (w->i);
w->i = NULL;
- return FALSE;
+ return false;
}
w->i->mapped = 0;
w->i->refcount = 1;
&& ((ufile_ptr) section->filepos + offset + count
> arelt_size (abfd)))
|| ! bfd_get_file_window (abfd, section->filepos + offset, count, w,
- TRUE))
- return FALSE;
- return TRUE;
+ true))
+ return false;
+ return true;
#else
abort ();
#endif
NEW sections is disallowed. It is useful in patching existing sections
in read-write files, though. See other set_section_contents functions
to see why it doesn't work for new sections. */
-bfd_boolean
+bool
_bfd_generic_set_section_contents (bfd *abfd,
sec_ptr section,
const void *location,
bfd_size_type count)
{
if (count == 0)
- return TRUE;
+ return true;
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
|| bfd_bwrite (location, count, abfd) != count)
- return FALSE;
+ return false;
- return TRUE;
+ return true;
}
/*
return result;
}
-bfd_boolean
+bool
bfd_generic_is_local_label_name (bfd *abfd, const char *name)
{
char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.';
byte = bfd_get_8 (abfd, buf);
buf++;
num_read++;
- result |= (((bfd_vma) byte & 0x7f) << shift);
- shift += 7;
+ if (shift < 8 * sizeof (result))
+ {
+ result |= (((bfd_vma) byte & 0x7f) << shift);
+ shift += 7;
+ }
}
while (byte & 0x80);
*bytes_read_ptr = num_read;
return result;
}
-/* Read in a LEB128 encoded value from ABFD starting at DATA.
+/* Read in a LEB128 encoded value from ABFD starting at *PTR.
If SIGN is true, return a signed LEB128 value.
- If LENGTH_RETURN is not NULL, return in it the number of bytes read.
+ *PTR is incremented by the number of bytes read.
No bytes will be read at address END or beyond. */
bfd_vma
_bfd_safe_read_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_byte *data,
- unsigned int *length_return,
- bfd_boolean sign,
+ bfd_byte **ptr,
+ bool sign,
const bfd_byte * const end)
{
bfd_vma result = 0;
- unsigned int num_read = 0;
unsigned int shift = 0;
unsigned char byte = 0;
+ bfd_byte *data = *ptr;
while (data < end)
{
byte = bfd_get_8 (abfd, data);
data++;
- num_read++;
-
- result |= ((bfd_vma) (byte & 0x7f)) << shift;
-
- shift += 7;
+ if (shift < 8 * sizeof (result))
+ {
+ result |= ((bfd_vma) (byte & 0x7f)) << shift;
+ shift += 7;
+ }
if ((byte & 0x80) == 0)
break;
}
- if (length_return != NULL)
- *length_return = num_read;
+ *ptr = data;
if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40))
result |= -((bfd_vma) 1 << shift);
byte = bfd_get_8 (abfd, buf);
buf ++;
num_read ++;
- result |= (((bfd_vma) byte & 0x7f) << shift);
- shift += 7;
+ if (shift < 8 * sizeof (result))
+ {
+ result |= (((bfd_vma) byte & 0x7f) << shift);
+ shift += 7;
+ }
}
while (byte & 0x80);
if (shift < 8 * sizeof (result) && (byte & 0x40))
return p;
}
-bfd_boolean
+bool
_bfd_generic_init_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
asection *isec ATTRIBUTE_UNUSED,
bfd *obfd ATTRIBUTE_UNUSED,
asection *osec ATTRIBUTE_UNUSED,
struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
{
- return TRUE;
+ return true;
}