| /* Assorted BFD support routines, only used internally. |
| Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 2000, 2001, 2002, 2003, 2004, 2005 |
| 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 2 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 "bfd.h" |
| #include "sysdep.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) |
| { |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| /* 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) \ |
| . (*(unsigned char *) (ptr) & 0xff) |
| .#define bfd_get_signed_8(abfd, ptr) \ |
| . (((*(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 = p; |
| return (addr[0] << 8) | addr[1]; |
| } |
| |
| bfd_vma |
| bfd_getl16 (const void *p) |
| { |
| const bfd_byte *addr = p; |
| return (addr[1] << 8) | addr[0]; |
| } |
| |
| bfd_signed_vma |
| bfd_getb_signed_16 (const void *p) |
| { |
| const bfd_byte *addr = p; |
| return COERCE16 ((addr[0] << 8) | addr[1]); |
| } |
| |
| bfd_signed_vma |
| bfd_getl_signed_16 (const void *p) |
| { |
| const bfd_byte *addr = p; |
| return COERCE16 ((addr[1] << 8) | addr[0]); |
| } |
| |
| void |
| bfd_putb16 (bfd_vma data, void *p) |
| { |
| bfd_byte *addr = p; |
| addr[0] = (data >> 8) & 0xff; |
| addr[1] = data & 0xff; |
| } |
| |
| void |
| bfd_putl16 (bfd_vma data, void *p) |
| { |
| bfd_byte *addr = p; |
| addr[0] = data & 0xff; |
| addr[1] = (data >> 8) & 0xff; |
| } |
| |
| bfd_vma |
| bfd_getb32 (const void *p) |
| { |
| const bfd_byte *addr = 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 = 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 = 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 = 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 = 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 = 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 = 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 = 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 = 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 = 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 = 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 = 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 = p; |
| int i; |
| int bytes; |
| |
| if (bits % 8 != 0) |
| abort (); |
| |
| bytes = bits / 8; |
| for (i = 0; i < bytes; i++) |
| { |
| int index = big_p ? bytes - i - 1 : i; |
| |
| 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 = 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 index = big_p ? i : bytes - i - 1; |
| |
| data = (data << 8) | 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; |
| |
| sz = section->rawsize ? section->rawsize : section->size; |
| if (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); |
| } |
| sz = section->rawsize ? section->rawsize : 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; |
| |
| while ((x = (x >> 1)) != 0) |
| ++result; |
| 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) |
| { |
| /* 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); |
| 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_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; |
| } |