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bfd/doc/libbfd.texi

Index: bfd/doc/libbfd.texi
diff --git a/bfd/doc/libbfd.texi b/bfd/doc/libbfd.texi
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-@section Implementation details
-
-
-@subsection Internal functions
-
-
-@strong{Description}@*
-These routines are used within BFD.
-They are not intended for export, but are documented here for
-completeness.
-
-@findex bfd_write_bigendian_4byte_int
-@subsubsection @code{bfd_write_bigendian_4byte_int}
-@strong{Synopsis}
-@example
-bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int);
-@end example
-@strong{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.
-
-@findex bfd_put_size
-@subsubsection @code{bfd_put_size}
-@findex bfd_get_size
-@subsubsection @code{bfd_get_size}
-@strong{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 @code{GET_WORD}
-to either @code{bfd_get_32} or @code{bfd_get_64}.
-
-In the put routines, @var{val} must be a @code{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 @code{lint}
-or @code{gcc -Wall} from detecting sins such as passing a pointer.
-To detect calling these with less than a @code{bfd_vma}, use
-@code{gcc -Wconversion} on a host with 64 bit @code{bfd_vma}'s.
-@example
-
-/* 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))
-
-@end example
-
-@findex bfd_h_put_size
-@subsubsection @code{bfd_h_put_size}
-@strong{Description}@*
-These macros have the same function as their @code{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.
-@example
-
-/* 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
-
-
-@end example
-
-@findex bfd_log2
-@subsubsection @code{bfd_log2}
-@strong{Synopsis}
-@example
-unsigned int bfd_log2 (bfd_vma x);
-@end example
-@strong{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.
-