0,0 → 1,1141 |
/* Assorted BFD support routines, only used internally. |
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
Free Software Foundation, Inc. |
Written by Cygnus Support. |
|
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 3 of the License, or |
(at your option) any later version. |
|
This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
|
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., 51 Franklin Street - Fifth Floor, Boston, |
MA 02110-1301, USA. */ |
|
#include "sysdep.h" |
#include "bfd.h" |
#include "libbfd.h" |
|
#ifndef HAVE_GETPAGESIZE |
#define getpagesize() 2048 |
#endif |
|
/* |
SECTION |
Implementation details |
|
SUBSECTION |
Internal functions |
|
DESCRIPTION |
These routines are used within BFD. |
They are not intended for export, but are documented here for |
completeness. |
*/ |
|
/* A routine which is used in target vectors for unsupported |
operations. */ |
|
bfd_boolean |
bfd_false (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return FALSE; |
} |
|
/* A routine which is used in target vectors for supported operations |
which do not actually do anything. */ |
|
bfd_boolean |
bfd_true (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
return TRUE; |
} |
|
/* A routine which is used in target vectors for unsupported |
operations which return a pointer value. */ |
|
void * |
bfd_nullvoidptr (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return NULL; |
} |
|
int |
bfd_0 (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
return 0; |
} |
|
unsigned int |
bfd_0u (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
return 0; |
} |
|
long |
bfd_0l (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
return 0; |
} |
|
/* A routine which is used in target vectors for unsupported |
operations which return -1 on error. */ |
|
long |
_bfd_n1 (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return -1; |
} |
|
void |
bfd_void (bfd *ignore ATTRIBUTE_UNUSED) |
{ |
} |
|
long |
_bfd_norelocs_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
asection *sec ATTRIBUTE_UNUSED) |
{ |
return sizeof (arelent *); |
} |
|
long |
_bfd_norelocs_canonicalize_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
asection *sec ATTRIBUTE_UNUSED, |
arelent **relptr, |
asymbol **symbols ATTRIBUTE_UNUSED) |
{ |
*relptr = NULL; |
return 0; |
} |
|
bfd_boolean |
_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; |
} |
|
/* Routine to handle core_file_failing_command entry point for targets |
without core file support. */ |
|
char * |
_bfd_nocore_core_file_failing_command (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return NULL; |
} |
|
/* Routine to handle core_file_failing_signal entry point for targets |
without core file support. */ |
|
int |
_bfd_nocore_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return 0; |
} |
|
/* Routine to handle the core_file_pid entry point for targets without |
core file support. */ |
|
int |
_bfd_nocore_core_file_pid (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return 0; |
} |
|
const bfd_target * |
_bfd_dummy_target (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
{ |
bfd_set_error (bfd_error_wrong_format); |
return 0; |
} |
|
/* Allocate memory using malloc. */ |
|
void * |
bfd_malloc (bfd_size_type size) |
{ |
void *ptr; |
|
if (size != (size_t) size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
ptr = malloc ((size_t) size); |
if (ptr == NULL && (size_t) size != 0) |
bfd_set_error (bfd_error_no_memory); |
|
return ptr; |
} |
|
/* Allocate memory using malloc, nmemb * size with overflow checking. */ |
|
void * |
bfd_malloc2 (bfd_size_type nmemb, bfd_size_type size) |
{ |
void *ptr; |
|
if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
&& size != 0 |
&& nmemb > ~(bfd_size_type) 0 / size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
size *= nmemb; |
|
if (size != (size_t) size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
ptr = malloc ((size_t) size); |
if (ptr == NULL && (size_t) size != 0) |
bfd_set_error (bfd_error_no_memory); |
|
return ptr; |
} |
|
/* Reallocate memory using realloc. */ |
|
void * |
bfd_realloc (void *ptr, bfd_size_type size) |
{ |
void *ret; |
|
if (size != (size_t) size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
if (ptr == NULL) |
ret = malloc ((size_t) size); |
else |
ret = realloc (ptr, (size_t) size); |
|
if (ret == NULL && (size_t) size != 0) |
bfd_set_error (bfd_error_no_memory); |
|
return ret; |
} |
|
/* Reallocate memory using realloc, nmemb * size with overflow checking. */ |
|
void * |
bfd_realloc2 (void *ptr, bfd_size_type nmemb, bfd_size_type size) |
{ |
void *ret; |
|
if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
&& size != 0 |
&& nmemb > ~(bfd_size_type) 0 / size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
size *= nmemb; |
|
if (size != (size_t) size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
if (ptr == NULL) |
ret = malloc ((size_t) size); |
else |
ret = realloc (ptr, (size_t) size); |
|
if (ret == NULL && (size_t) size != 0) |
bfd_set_error (bfd_error_no_memory); |
|
return ret; |
} |
|
/* Reallocate memory using realloc. |
If this fails the pointer is freed before returning. */ |
|
void * |
bfd_realloc_or_free (void *ptr, bfd_size_type size) |
{ |
size_t amount = (size_t) size; |
void *ret; |
|
if (size != amount) |
ret = NULL; |
else if (ptr == NULL) |
ret = malloc (amount); |
else |
ret = realloc (ptr, amount); |
|
if (ret == NULL) |
{ |
if (amount > 0) |
bfd_set_error (bfd_error_no_memory); |
|
if (ptr != NULL) |
free (ptr); |
} |
|
return ret; |
} |
|
/* Allocate memory using malloc and clear it. */ |
|
void * |
bfd_zmalloc (bfd_size_type size) |
{ |
void *ptr; |
|
if (size != (size_t) size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
ptr = malloc ((size_t) size); |
|
if ((size_t) size != 0) |
{ |
if (ptr == NULL) |
bfd_set_error (bfd_error_no_memory); |
else |
memset (ptr, 0, (size_t) size); |
} |
|
return ptr; |
} |
|
/* Allocate memory using malloc (nmemb * size) with overflow checking |
and clear it. */ |
|
void * |
bfd_zmalloc2 (bfd_size_type nmemb, bfd_size_type size) |
{ |
void *ptr; |
|
if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
&& size != 0 |
&& nmemb > ~(bfd_size_type) 0 / size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
size *= nmemb; |
|
if (size != (size_t) size) |
{ |
bfd_set_error (bfd_error_no_memory); |
return NULL; |
} |
|
ptr = malloc ((size_t) size); |
|
if ((size_t) size != 0) |
{ |
if (ptr == NULL) |
bfd_set_error (bfd_error_no_memory); |
else |
memset (ptr, 0, (size_t) size); |
} |
|
return ptr; |
} |
|
/* |
INTERNAL_FUNCTION |
bfd_write_bigendian_4byte_int |
|
SYNOPSIS |
bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int); |
|
DESCRIPTION |
Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big |
endian order regardless of what else is going on. This is useful in |
archives. |
|
*/ |
bfd_boolean |
bfd_write_bigendian_4byte_int (bfd *abfd, unsigned int i) |
{ |
bfd_byte buffer[4]; |
bfd_putb32 ((bfd_vma) i, buffer); |
return bfd_bwrite (buffer, (bfd_size_type) 4, abfd) == 4; |
} |
|
|
/** The do-it-yourself (byte) sex-change kit */ |
|
/* The middle letter e.g. get<b>short indicates Big or Little endian |
target machine. It doesn't matter what the byte order of the host |
machine is; these routines work for either. */ |
|
/* FIXME: Should these take a count argument? |
Answer (gnu@cygnus.com): No, but perhaps they should be inline |
functions in swap.h #ifdef __GNUC__. |
Gprof them later and find out. */ |
|
/* |
FUNCTION |
bfd_put_size |
FUNCTION |
bfd_get_size |
|
DESCRIPTION |
These macros as used for reading and writing raw data in |
sections; each access (except for bytes) is vectored through |
the target format of the BFD and mangled accordingly. The |
mangling performs any necessary endian translations and |
removes alignment restrictions. Note that types accepted and |
returned by these macros are identical so they can be swapped |
around in macros---for example, @file{libaout.h} defines <<GET_WORD>> |
to either <<bfd_get_32>> or <<bfd_get_64>>. |
|
In the put routines, @var{val} must be a <<bfd_vma>>. If we are on a |
system without prototypes, the caller is responsible for making |
sure that is true, with a cast if necessary. We don't cast |
them in the macro definitions because that would prevent <<lint>> |
or <<gcc -Wall>> from detecting sins such as passing a pointer. |
To detect calling these with less than a <<bfd_vma>>, use |
<<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s. |
|
. |
.{* Byte swapping macros for user section data. *} |
. |
.#define bfd_put_8(abfd, val, ptr) \ |
. ((void) (*((unsigned char *) (ptr)) = (val) & 0xff)) |
.#define bfd_put_signed_8 \ |
. bfd_put_8 |
.#define bfd_get_8(abfd, ptr) \ |
. (*(const unsigned char *) (ptr) & 0xff) |
.#define bfd_get_signed_8(abfd, ptr) \ |
. (((*(const unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80) |
. |
.#define bfd_put_16(abfd, val, ptr) \ |
. BFD_SEND (abfd, bfd_putx16, ((val),(ptr))) |
.#define bfd_put_signed_16 \ |
. bfd_put_16 |
.#define bfd_get_16(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_getx16, (ptr)) |
.#define bfd_get_signed_16(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_getx_signed_16, (ptr)) |
. |
.#define bfd_put_32(abfd, val, ptr) \ |
. BFD_SEND (abfd, bfd_putx32, ((val),(ptr))) |
.#define bfd_put_signed_32 \ |
. bfd_put_32 |
.#define bfd_get_32(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_getx32, (ptr)) |
.#define bfd_get_signed_32(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_getx_signed_32, (ptr)) |
. |
.#define bfd_put_64(abfd, val, ptr) \ |
. BFD_SEND (abfd, bfd_putx64, ((val), (ptr))) |
.#define bfd_put_signed_64 \ |
. bfd_put_64 |
.#define bfd_get_64(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_getx64, (ptr)) |
.#define bfd_get_signed_64(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_getx_signed_64, (ptr)) |
. |
.#define bfd_get(bits, abfd, ptr) \ |
. ((bits) == 8 ? (bfd_vma) bfd_get_8 (abfd, ptr) \ |
. : (bits) == 16 ? bfd_get_16 (abfd, ptr) \ |
. : (bits) == 32 ? bfd_get_32 (abfd, ptr) \ |
. : (bits) == 64 ? bfd_get_64 (abfd, ptr) \ |
. : (abort (), (bfd_vma) - 1)) |
. |
.#define bfd_put(bits, abfd, val, ptr) \ |
. ((bits) == 8 ? bfd_put_8 (abfd, val, ptr) \ |
. : (bits) == 16 ? bfd_put_16 (abfd, val, ptr) \ |
. : (bits) == 32 ? bfd_put_32 (abfd, val, ptr) \ |
. : (bits) == 64 ? bfd_put_64 (abfd, val, ptr) \ |
. : (abort (), (void) 0)) |
. |
*/ |
|
/* |
FUNCTION |
bfd_h_put_size |
bfd_h_get_size |
|
DESCRIPTION |
These macros have the same function as their <<bfd_get_x>> |
brethren, except that they are used for removing information |
for the header records of object files. Believe it or not, |
some object files keep their header records in big endian |
order and their data in little endian order. |
. |
.{* Byte swapping macros for file header data. *} |
. |
.#define bfd_h_put_8(abfd, val, ptr) \ |
. bfd_put_8 (abfd, val, ptr) |
.#define bfd_h_put_signed_8(abfd, val, ptr) \ |
. bfd_put_8 (abfd, val, ptr) |
.#define bfd_h_get_8(abfd, ptr) \ |
. bfd_get_8 (abfd, ptr) |
.#define bfd_h_get_signed_8(abfd, ptr) \ |
. bfd_get_signed_8 (abfd, ptr) |
. |
.#define bfd_h_put_16(abfd, val, ptr) \ |
. BFD_SEND (abfd, bfd_h_putx16, (val, ptr)) |
.#define bfd_h_put_signed_16 \ |
. bfd_h_put_16 |
.#define bfd_h_get_16(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_h_getx16, (ptr)) |
.#define bfd_h_get_signed_16(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_h_getx_signed_16, (ptr)) |
. |
.#define bfd_h_put_32(abfd, val, ptr) \ |
. BFD_SEND (abfd, bfd_h_putx32, (val, ptr)) |
.#define bfd_h_put_signed_32 \ |
. bfd_h_put_32 |
.#define bfd_h_get_32(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_h_getx32, (ptr)) |
.#define bfd_h_get_signed_32(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_h_getx_signed_32, (ptr)) |
. |
.#define bfd_h_put_64(abfd, val, ptr) \ |
. BFD_SEND (abfd, bfd_h_putx64, (val, ptr)) |
.#define bfd_h_put_signed_64 \ |
. bfd_h_put_64 |
.#define bfd_h_get_64(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_h_getx64, (ptr)) |
.#define bfd_h_get_signed_64(abfd, ptr) \ |
. BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr)) |
. |
.{* Aliases for the above, which should eventually go away. *} |
. |
.#define H_PUT_64 bfd_h_put_64 |
.#define H_PUT_32 bfd_h_put_32 |
.#define H_PUT_16 bfd_h_put_16 |
.#define H_PUT_8 bfd_h_put_8 |
.#define H_PUT_S64 bfd_h_put_signed_64 |
.#define H_PUT_S32 bfd_h_put_signed_32 |
.#define H_PUT_S16 bfd_h_put_signed_16 |
.#define H_PUT_S8 bfd_h_put_signed_8 |
.#define H_GET_64 bfd_h_get_64 |
.#define H_GET_32 bfd_h_get_32 |
.#define H_GET_16 bfd_h_get_16 |
.#define H_GET_8 bfd_h_get_8 |
.#define H_GET_S64 bfd_h_get_signed_64 |
.#define H_GET_S32 bfd_h_get_signed_32 |
.#define H_GET_S16 bfd_h_get_signed_16 |
.#define H_GET_S8 bfd_h_get_signed_8 |
. |
.*/ |
|
/* Sign extension to bfd_signed_vma. */ |
#define COERCE16(x) (((bfd_signed_vma) (x) ^ 0x8000) - 0x8000) |
#define COERCE32(x) (((bfd_signed_vma) (x) ^ 0x80000000) - 0x80000000) |
#define EIGHT_GAZILLION ((bfd_int64_t) 1 << 63) |
#define COERCE64(x) \ |
(((bfd_int64_t) (x) ^ EIGHT_GAZILLION) - EIGHT_GAZILLION) |
|
bfd_vma |
bfd_getb16 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
return (addr[0] << 8) | addr[1]; |
} |
|
bfd_vma |
bfd_getl16 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
return (addr[1] << 8) | addr[0]; |
} |
|
bfd_signed_vma |
bfd_getb_signed_16 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
return COERCE16 ((addr[0] << 8) | addr[1]); |
} |
|
bfd_signed_vma |
bfd_getl_signed_16 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
return COERCE16 ((addr[1] << 8) | addr[0]); |
} |
|
void |
bfd_putb16 (bfd_vma data, void *p) |
{ |
bfd_byte *addr = (bfd_byte *) p; |
addr[0] = (data >> 8) & 0xff; |
addr[1] = data & 0xff; |
} |
|
void |
bfd_putl16 (bfd_vma data, void *p) |
{ |
bfd_byte *addr = (bfd_byte *) p; |
addr[0] = data & 0xff; |
addr[1] = (data >> 8) & 0xff; |
} |
|
bfd_vma |
bfd_getb32 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
unsigned long v; |
|
v = (unsigned long) addr[0] << 24; |
v |= (unsigned long) addr[1] << 16; |
v |= (unsigned long) addr[2] << 8; |
v |= (unsigned long) addr[3]; |
return v; |
} |
|
bfd_vma |
bfd_getl32 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
unsigned long v; |
|
v = (unsigned long) addr[0]; |
v |= (unsigned long) addr[1] << 8; |
v |= (unsigned long) addr[2] << 16; |
v |= (unsigned long) addr[3] << 24; |
return v; |
} |
|
bfd_signed_vma |
bfd_getb_signed_32 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
unsigned long v; |
|
v = (unsigned long) addr[0] << 24; |
v |= (unsigned long) addr[1] << 16; |
v |= (unsigned long) addr[2] << 8; |
v |= (unsigned long) addr[3]; |
return COERCE32 (v); |
} |
|
bfd_signed_vma |
bfd_getl_signed_32 (const void *p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
unsigned long v; |
|
v = (unsigned long) addr[0]; |
v |= (unsigned long) addr[1] << 8; |
v |= (unsigned long) addr[2] << 16; |
v |= (unsigned long) addr[3] << 24; |
return COERCE32 (v); |
} |
|
bfd_uint64_t |
bfd_getb64 (const void *p ATTRIBUTE_UNUSED) |
{ |
#ifdef BFD_HOST_64_BIT |
const bfd_byte *addr = (const bfd_byte *) p; |
bfd_uint64_t v; |
|
v = addr[0]; v <<= 8; |
v |= addr[1]; v <<= 8; |
v |= addr[2]; v <<= 8; |
v |= addr[3]; v <<= 8; |
v |= addr[4]; v <<= 8; |
v |= addr[5]; v <<= 8; |
v |= addr[6]; v <<= 8; |
v |= addr[7]; |
|
return v; |
#else |
BFD_FAIL(); |
return 0; |
#endif |
} |
|
bfd_uint64_t |
bfd_getl64 (const void *p ATTRIBUTE_UNUSED) |
{ |
#ifdef BFD_HOST_64_BIT |
const bfd_byte *addr = (const bfd_byte *) p; |
bfd_uint64_t v; |
|
v = addr[7]; v <<= 8; |
v |= addr[6]; v <<= 8; |
v |= addr[5]; v <<= 8; |
v |= addr[4]; v <<= 8; |
v |= addr[3]; v <<= 8; |
v |= addr[2]; v <<= 8; |
v |= addr[1]; v <<= 8; |
v |= addr[0]; |
|
return v; |
#else |
BFD_FAIL(); |
return 0; |
#endif |
|
} |
|
bfd_int64_t |
bfd_getb_signed_64 (const void *p ATTRIBUTE_UNUSED) |
{ |
#ifdef BFD_HOST_64_BIT |
const bfd_byte *addr = (const bfd_byte *) p; |
bfd_uint64_t v; |
|
v = addr[0]; v <<= 8; |
v |= addr[1]; v <<= 8; |
v |= addr[2]; v <<= 8; |
v |= addr[3]; v <<= 8; |
v |= addr[4]; v <<= 8; |
v |= addr[5]; v <<= 8; |
v |= addr[6]; v <<= 8; |
v |= addr[7]; |
|
return COERCE64 (v); |
#else |
BFD_FAIL(); |
return 0; |
#endif |
} |
|
bfd_int64_t |
bfd_getl_signed_64 (const void *p ATTRIBUTE_UNUSED) |
{ |
#ifdef BFD_HOST_64_BIT |
const bfd_byte *addr = (const bfd_byte *) p; |
bfd_uint64_t v; |
|
v = addr[7]; v <<= 8; |
v |= addr[6]; v <<= 8; |
v |= addr[5]; v <<= 8; |
v |= addr[4]; v <<= 8; |
v |= addr[3]; v <<= 8; |
v |= addr[2]; v <<= 8; |
v |= addr[1]; v <<= 8; |
v |= addr[0]; |
|
return COERCE64 (v); |
#else |
BFD_FAIL(); |
return 0; |
#endif |
} |
|
void |
bfd_putb32 (bfd_vma data, void *p) |
{ |
bfd_byte *addr = (bfd_byte *) p; |
addr[0] = (data >> 24) & 0xff; |
addr[1] = (data >> 16) & 0xff; |
addr[2] = (data >> 8) & 0xff; |
addr[3] = data & 0xff; |
} |
|
void |
bfd_putl32 (bfd_vma data, void *p) |
{ |
bfd_byte *addr = (bfd_byte *) p; |
addr[0] = data & 0xff; |
addr[1] = (data >> 8) & 0xff; |
addr[2] = (data >> 16) & 0xff; |
addr[3] = (data >> 24) & 0xff; |
} |
|
void |
bfd_putb64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED) |
{ |
#ifdef BFD_HOST_64_BIT |
bfd_byte *addr = (bfd_byte *) p; |
addr[0] = (data >> (7*8)) & 0xff; |
addr[1] = (data >> (6*8)) & 0xff; |
addr[2] = (data >> (5*8)) & 0xff; |
addr[3] = (data >> (4*8)) & 0xff; |
addr[4] = (data >> (3*8)) & 0xff; |
addr[5] = (data >> (2*8)) & 0xff; |
addr[6] = (data >> (1*8)) & 0xff; |
addr[7] = (data >> (0*8)) & 0xff; |
#else |
BFD_FAIL(); |
#endif |
} |
|
void |
bfd_putl64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED) |
{ |
#ifdef BFD_HOST_64_BIT |
bfd_byte *addr = (bfd_byte *) p; |
addr[7] = (data >> (7*8)) & 0xff; |
addr[6] = (data >> (6*8)) & 0xff; |
addr[5] = (data >> (5*8)) & 0xff; |
addr[4] = (data >> (4*8)) & 0xff; |
addr[3] = (data >> (3*8)) & 0xff; |
addr[2] = (data >> (2*8)) & 0xff; |
addr[1] = (data >> (1*8)) & 0xff; |
addr[0] = (data >> (0*8)) & 0xff; |
#else |
BFD_FAIL(); |
#endif |
} |
|
void |
bfd_put_bits (bfd_uint64_t data, void *p, int bits, bfd_boolean big_p) |
{ |
bfd_byte *addr = (bfd_byte *) p; |
int i; |
int bytes; |
|
if (bits % 8 != 0) |
abort (); |
|
bytes = bits / 8; |
for (i = 0; i < bytes; i++) |
{ |
int addr_index = big_p ? bytes - i - 1 : i; |
|
addr[addr_index] = data & 0xff; |
data >>= 8; |
} |
} |
|
bfd_uint64_t |
bfd_get_bits (const void *p, int bits, bfd_boolean big_p) |
{ |
const bfd_byte *addr = (const bfd_byte *) p; |
bfd_uint64_t data; |
int i; |
int bytes; |
|
if (bits % 8 != 0) |
abort (); |
|
data = 0; |
bytes = bits / 8; |
for (i = 0; i < bytes; i++) |
{ |
int addr_index = big_p ? i : bytes - i - 1; |
|
data = (data << 8) | addr[addr_index]; |
} |
|
return data; |
} |
|
/* Default implementation */ |
|
bfd_boolean |
_bfd_generic_get_section_contents (bfd *abfd, |
sec_ptr section, |
void *location, |
file_ptr offset, |
bfd_size_type count) |
{ |
bfd_size_type sz; |
if (count == 0) |
return TRUE; |
|
if (section->compress_status != COMPRESS_SECTION_NONE) |
{ |
(*_bfd_error_handler) |
(_("%B: unable to get decompressed section %A"), |
abfd, section); |
bfd_set_error (bfd_error_invalid_operation); |
return FALSE; |
} |
|
/* We do allow reading of a section after bfd_final_link has |
written the contents out to disk. In that situation, rawsize is |
just a stale version of size, so ignore it. Otherwise we must be |
reading an input section, where rawsize, if different to size, |
is the on-disk size. */ |
if (abfd->direction != write_direction && section->rawsize != 0) |
sz = section->rawsize; |
else |
sz = section->size; |
if (offset + count < count |
|| offset + count > sz) |
{ |
bfd_set_error (bfd_error_invalid_operation); |
return FALSE; |
} |
|
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 |
|| bfd_bread (location, count, abfd) != count) |
return FALSE; |
|
return TRUE; |
} |
|
bfd_boolean |
_bfd_generic_get_section_contents_in_window |
(bfd *abfd ATTRIBUTE_UNUSED, |
sec_ptr section ATTRIBUTE_UNUSED, |
bfd_window *w ATTRIBUTE_UNUSED, |
file_ptr offset ATTRIBUTE_UNUSED, |
bfd_size_type count ATTRIBUTE_UNUSED) |
{ |
#ifdef USE_MMAP |
bfd_size_type sz; |
|
if (count == 0) |
return TRUE; |
if (abfd->xvec->_bfd_get_section_contents |
!= _bfd_generic_get_section_contents) |
{ |
/* We don't know what changes the bfd's get_section_contents |
method may have to make. So punt trying to map the file |
window, and let get_section_contents do its thing. */ |
/* @@ FIXME : If the internal window has a refcount of 1 and was |
allocated with malloc instead of mmap, just reuse it. */ |
bfd_free_window (w); |
w->i = bfd_zmalloc (sizeof (bfd_window_internal)); |
if (w->i == NULL) |
return FALSE; |
w->i->data = bfd_malloc (count); |
if (w->i->data == NULL) |
{ |
free (w->i); |
w->i = NULL; |
return FALSE; |
} |
w->i->mapped = 0; |
w->i->refcount = 1; |
w->size = w->i->size = count; |
w->data = w->i->data; |
return bfd_get_section_contents (abfd, section, w->data, offset, count); |
} |
if (abfd->direction != write_direction && section->rawsize != 0) |
sz = section->rawsize; |
else |
sz = section->size; |
if (offset + count > sz |
|| ! bfd_get_file_window (abfd, section->filepos + offset, count, w, |
TRUE)) |
return FALSE; |
return TRUE; |
#else |
abort (); |
#endif |
} |
|
/* This generic function can only be used in implementations where creating |
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 |
_bfd_generic_set_section_contents (bfd *abfd, |
sec_ptr section, |
const void *location, |
file_ptr offset, |
bfd_size_type count) |
{ |
if (count == 0) |
return TRUE; |
|
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 |
|| bfd_bwrite (location, count, abfd) != count) |
return FALSE; |
|
return TRUE; |
} |
|
/* |
INTERNAL_FUNCTION |
bfd_log2 |
|
SYNOPSIS |
unsigned int bfd_log2 (bfd_vma x); |
|
DESCRIPTION |
Return the log base 2 of the value supplied, rounded up. E.g., an |
@var{x} of 1025 returns 11. A @var{x} of 0 returns 0. |
*/ |
|
unsigned int |
bfd_log2 (bfd_vma x) |
{ |
unsigned int result = 0; |
|
if (x <= 1) |
return result; |
--x; |
do |
++result; |
while ((x >>= 1) != 0); |
return result; |
} |
|
bfd_boolean |
bfd_generic_is_local_label_name (bfd *abfd, const char *name) |
{ |
char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.'; |
|
return name[0] == locals_prefix; |
} |
|
/* Can be used from / for bfd_merge_private_bfd_data to check that |
endianness matches between input and output file. Returns |
TRUE for a match, otherwise returns FALSE and emits an error. */ |
bfd_boolean |
_bfd_generic_verify_endian_match (bfd *ibfd, bfd *obfd) |
{ |
if (ibfd->xvec->byteorder != obfd->xvec->byteorder |
&& ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
&& obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
{ |
const char *msg; |
|
if (bfd_big_endian (ibfd)) |
msg = _("%B: compiled for a big endian system and target is little endian"); |
else |
msg = _("%B: compiled for a little endian system and target is big endian"); |
|
(*_bfd_error_handler) (msg, ibfd); |
|
bfd_set_error (bfd_error_wrong_format); |
return FALSE; |
} |
|
return TRUE; |
} |
|
/* Give a warning at runtime if someone compiles code which calls |
old routines. */ |
|
void |
warn_deprecated (const char *what, |
const char *file, |
int line, |
const char *func) |
{ |
/* Poor man's tracking of functions we've already warned about. */ |
static size_t mask = 0; |
|
if (~(size_t) func & ~mask) |
{ |
fflush (stdout); |
/* Note: separate sentences in order to allow |
for translation into other languages. */ |
if (func) |
fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"), |
what, file, line, func); |
else |
fprintf (stderr, _("Deprecated %s called\n"), what); |
fflush (stderr); |
mask |= ~(size_t) func; |
} |
} |
|
/* Helper function for reading uleb128 encoded data. */ |
|
bfd_vma |
read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED, |
bfd_byte *buf, |
unsigned int *bytes_read_ptr) |
{ |
bfd_vma result; |
unsigned int num_read; |
unsigned int shift; |
unsigned char byte; |
|
result = 0; |
shift = 0; |
num_read = 0; |
do |
{ |
byte = bfd_get_8 (abfd, buf); |
buf++; |
num_read++; |
result |= (((bfd_vma) byte & 0x7f) << shift); |
shift += 7; |
} |
while (byte & 0x80); |
*bytes_read_ptr = num_read; |
return result; |
} |
|
/* Helper function for reading sleb128 encoded data. */ |
|
bfd_signed_vma |
read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED, |
bfd_byte *buf, |
unsigned int *bytes_read_ptr) |
{ |
bfd_vma result; |
unsigned int shift; |
unsigned int num_read; |
unsigned char byte; |
|
result = 0; |
shift = 0; |
num_read = 0; |
do |
{ |
byte = bfd_get_8 (abfd, buf); |
buf ++; |
num_read ++; |
result |= (((bfd_vma) byte & 0x7f) << shift); |
shift += 7; |
} |
while (byte & 0x80); |
if (shift < 8 * sizeof (result) && (byte & 0x40)) |
result |= (((bfd_vma) -1) << shift); |
*bytes_read_ptr = num_read; |
return result; |
} |
|
bfd_boolean |
_bfd_generic_find_line (bfd *abfd ATTRIBUTE_UNUSED, |
asymbol **symbols ATTRIBUTE_UNUSED, |
asymbol *symbol ATTRIBUTE_UNUSED, |
const char **filename_ptr ATTRIBUTE_UNUSED, |
unsigned int *linenumber_ptr ATTRIBUTE_UNUSED) |
{ |
return FALSE; |
} |
|
bfd_boolean |
_bfd_generic_find_nearest_line_discriminator (bfd *abfd ATTRIBUTE_UNUSED, |
asection *section ATTRIBUTE_UNUSED, |
asymbol **symbols ATTRIBUTE_UNUSED, |
bfd_vma offset ATTRIBUTE_UNUSED, |
const char **filename_ptr ATTRIBUTE_UNUSED, |
const char **functionname_ptr ATTRIBUTE_UNUSED, |
unsigned int *line_ptr ATTRIBUTE_UNUSED, |
unsigned int *discriminator_ptr ATTRIBUTE_UNUSED) |
{ |
return FALSE; |
} |
|
bfd_boolean |
_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; |
} |