/* Generic target-file-type support for the BFD library.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
target are unknown. BFD uses various mechanisms to determine
how to interpret the file. The operations performed are:
- o First a BFD is created by calling the internal routine
- <<new_bfd>>, then <<bfd_find_target>> is called with the
+ o Create a BFD by calling the internal routine
+ <<new_bfd>>, then call <<bfd_find_target>> with the
target string supplied to <<bfd_openr>> and the new BFD pointer.
o If a null target string was provided to <<bfd_find_target>>,
- it looks up the environment variable <<GNUTARGET>> and uses
+ look up the environment variable <<GNUTARGET>> and use
that as the target string.
- o If the target string is still NULL, or the target string is
- <<default>>, then the first item in the target vector is used
- as the target type, and <<target_defaulted>> is set to
+ o If the target string is still <<NULL>>, or the target string is
+ <<default>>, then use the first item in the target vector
+ as the target type, and set <<target_defaulted>> in the BFD to
cause <<bfd_check_format>> to loop through all the targets.
@xref{bfd_target}. @xref{Formats}.
- o Otherwise, the elements in the target vector are inspected
+ o Otherwise, inspect the elements in the target vector
one by one, until a match on target name is found. When found,
- that is used.
+ use it.
- o Otherwise the error <<invalid_target>> is returned to
+ o Otherwise return the error <<invalid_target>> to
<<bfd_openr>>.
o <<bfd_openr>> attempts to open the file using
format may be determined. This is done by calling
<<bfd_check_format>> on the BFD with a suggested format.
If <<target_defaulted>> has been set, each possible target
- type is tried to see if it recognizes the specified format. The
- routine returns <<true>> when the application guesses right.
+ type is tried to see if it recognizes the specified format.
+ <<bfd_check_format>> returns <<true>> when the caller guesses right.
@menu
@* bfd_target::
@end menu
DESCRIPTION
This structure contains everything that BFD knows about a
- target. It includes things like its byte order, name, what
- routines to call to do various operations, etc.
+ target. It includes things like its byte order, name, and which
+ routines to call to do various operations.
Every BFD points to a target structure with its <<xvec>>
member.
- These macros are used to dispatch to functions through the
- bfd_target vector. They are used in a number of macros further
+ The macros below are used to dispatch to functions through the
+ <<bfd_target>> vector. They are used in a number of macros further
down in @file{bfd.h}, and are also used when calling various
- routines by hand inside the BFD implementation. The "arglist"
+ routines by hand inside the BFD implementation. The @var{arglist}
argument must be parenthesized; it contains all the arguments
to the called function.
.#define BFD_SEND(bfd, message, arglist) \
. ((*((bfd)->xvec->message)) arglist)
- For operations which index on the BFD format
+ For operations which index on the BFD format:
.#define BFD_SEND_FMT(bfd, message, arglist) \
. (((bfd)->xvec->message[(int)((bfd)->format)]) arglist)
- This is the struct which defines the type of BFD this is. The
+ This is the structure which defines the type of BFD this is. The
<<xvec>> member of the struct <<bfd>> itself points here. Each
module that implements access to a different target under BFD,
defines one of these.
the entry points which call them. Too bad we can't have one
macro to define them both!
+.enum bfd_flavour {
+. bfd_target_unknown_flavour,
+. bfd_target_aout_flavour,
+. bfd_target_coff_flavour,
+. bfd_target_ecoff_flavour,
+. bfd_target_elf_flavour,
+. bfd_target_ieee_flavour,
+. bfd_target_nlm_flavour,
+. bfd_target_oasys_flavour,
+. bfd_target_tekhex_flavour,
+. bfd_target_srec_flavour,
+. bfd_target_som_flavour};
+
.typedef struct bfd_target
.{
-Identifies the kind of target, eg SunOS4, Ultrix, etc.
+Identifies the kind of target, e.g., SunOS4, Ultrix, etc.
. char *name;
The "flavour" of a back end is a general indication about the contents
of a file.
-. enum target_flavour {
-. bfd_target_unknown_flavour,
-. bfd_target_aout_flavour,
-. bfd_target_coff_flavour,
-. bfd_target_ecoff_flavour,
-. bfd_target_elf_flavour,
-. bfd_target_ieee_flavour,
-. bfd_target_oasys_flavour,
-. bfd_target_tekhex_flavour,
-. bfd_target_srec_flavour,
-. bfd_target_hppa_flavour} flavour;
+. enum bfd_flavour flavour;
The order of bytes within the data area of a file.
. boolean header_byteorder_big_p;
-This is a mask of all the flags which an executable may have set -
+A mask of all the flags which an executable may have set -
from the set <<NO_FLAGS>>, <<HAS_RELOC>>, ...<<D_PAGED>>.
. flagword object_flags;
-This is a mask of all the flags which a section may have set - from
+A mask of all the flags which a section may have set - from
the set <<SEC_NO_FLAGS>>, <<SEC_ALLOC>>, ...<<SET_NEVER_LOAD>>.
. flagword section_flags;
The character normally found at the front of a symbol
-(if any), perhaps _.
+(if any), perhaps `_'.
. char symbol_leading_char;
-The pad character for filenames within an archive header.
+The pad character for file names within an archive header.
. char ar_pad_char;
. unsigned int align_power_min;
-Entries for byte swapping for data. These are different to the other
-entry points, since they don't take BFD as first arg. Certain other handlers
-could do the same.
+Entries for byte swapping for data. These are different from the other
+entry points, since they don't take a BFD asthe first argument.
+Certain other handlers could do the same.
. bfd_vma (*bfd_getx64) PARAMS ((bfd_byte *));
+. bfd_signed_vma (*bfd_getx_signed_64) PARAMS ((bfd_byte *));
. void (*bfd_putx64) PARAMS ((bfd_vma, bfd_byte *));
. bfd_vma (*bfd_getx32) PARAMS ((bfd_byte *));
+. bfd_signed_vma (*bfd_getx_signed_32) PARAMS ((bfd_byte *));
. void (*bfd_putx32) PARAMS ((bfd_vma, bfd_byte *));
. bfd_vma (*bfd_getx16) PARAMS ((bfd_byte *));
+. bfd_signed_vma (*bfd_getx_signed_16) PARAMS ((bfd_byte *));
. void (*bfd_putx16) PARAMS ((bfd_vma, bfd_byte *));
Byte swapping for the headers
. bfd_vma (*bfd_h_getx64) PARAMS ((bfd_byte *));
+. bfd_signed_vma (*bfd_h_getx_signed_64) PARAMS ((bfd_byte *));
. void (*bfd_h_putx64) PARAMS ((bfd_vma, bfd_byte *));
. bfd_vma (*bfd_h_getx32) PARAMS ((bfd_byte *));
+. bfd_signed_vma (*bfd_h_getx_signed_32) PARAMS ((bfd_byte *));
. void (*bfd_h_putx32) PARAMS ((bfd_vma, bfd_byte *));
. bfd_vma (*bfd_h_getx16) PARAMS ((bfd_byte *));
+. bfd_signed_vma (*bfd_h_getx_signed_16) PARAMS ((bfd_byte *));
. void (*bfd_h_putx16) PARAMS ((bfd_vma, bfd_byte *));
Format dependent routines: these are vectors of entry points
within the target vector structure, one for each format to check.
-Check the format of a file being read. Return bfd_target * or zero.
+Check the format of a file being read. Return a <<bfd_target *>> or zero.
. struct bfd_target * (*_bfd_check_format[bfd_type_end]) PARAMS ((bfd *));
. boolean (*_bfd_set_format[bfd_type_end]) PARAMS ((bfd *));
-Write cached information into a file being written, at bfd_close.
+Write cached information into a file being written, at <<bfd_close>>.
. boolean (*_bfd_write_contents[bfd_type_end]) PARAMS ((bfd *));
The following functions are defined in <<JUMP_TABLE>>. The idea is
that the back end writer of <<foo>> names all the routines
-<<foo_>>@var{entry_point}, <<JUMP_TABLE>> will built the entries
+<<foo_>>@var{entry_point}; <<JUMP_TABLE>> will build the entries
in this structure in the right order.
-Core file entry points
+Core file entry points.
. char * (*_core_file_failing_command) PARAMS ((bfd *));
. int (*_core_file_failing_signal) PARAMS ((bfd *));
. boolean (*_core_file_matches_executable_p) PARAMS ((bfd *, bfd *));
-Archive entry points
+Archive entry points.
. boolean (*_bfd_slurp_armap) PARAMS ((bfd *));
. boolean (*_bfd_slurp_extended_name_table) PARAMS ((bfd *));
. file_ptr, bfd_size_type));
. boolean (*_new_section_hook) PARAMS ((bfd *, sec_ptr));
-Symbols and relocations
+Symbols and relocations.
. unsigned int (*_get_symtab_upper_bound) PARAMS ((bfd *));
. unsigned int (*_bfd_canonicalize_symtab) PARAMS ((bfd *,
. struct symbol_cache_entry *,
. bfd_print_symbol_type));
.#define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e))
+. void (*_bfd_get_symbol_info) PARAMS ((bfd *,
+. struct symbol_cache_entry *,
+. symbol_info *));
+.#define bfd_get_symbol_info(b,p,e) BFD_SEND(b, _bfd_get_symbol_info, (b,p,e))
. alent * (*_get_lineno) PARAMS ((bfd *, struct symbol_cache_entry *));
.
. void (*_bfd_debug_info_accumulate) PARAMS ((bfd *, struct sec *));
.
. bfd_byte * (*_bfd_get_relocated_section_contents) PARAMS ((bfd *,
-. struct bfd_seclet *, bfd_byte *data));
+. struct bfd_seclet *, bfd_byte *data,
+. boolean relocateable));
.
. boolean (*_bfd_relax_section) PARAMS ((bfd *, struct sec *,
. struct symbol_cache_entry **));
+.
+. boolean (*_bfd_seclet_link) PARAMS ((bfd *, PTR data,
+. boolean relocateable));
. {* See documentation on reloc types. *}
. CONST struct reloc_howto_struct *
. void *ptr,
. unsigned long size));
-Data for use by back-end routines; e.g., for a.out, includes whether
-this particular target maps ZMAGIC files contiguously or with text and
-data separated. Could perhaps also be used to eliminate some of the
-above COFF-specific fields.
+Data for use by back-end routines, which isn't generic enough to belong
+in this structure.
. PTR backend_data;
.} bfd_target;
*/
-/* The default is to define a target_vector containing all the targets.
- By setting MINIMIZE=1 on the "make" command line, the user can change this
- to a vector containing just DEFAULT_VECTOR and any required
- traditional-core-file handler. (This is to save space in the executables.)
- The config files can also override the default large vector by giving an
- explicit SELECT_VECS macro. */
-
-#if MINIMIZE && defined(DEFAULT_VECTOR) && !defined(SELECT_VECS)
-#ifdef TRAD_CORE
-#define SELECT_VECS &DEFAULT_VECTOR,&trad_core_vec
-#else
-#ifdef SCO_CORE
-#define SELECT_VECS &DEFAULT_VECTOR,&sco_core_vec
-#else
-#ifdef AIX386_CORE
-#define SELECT_VECS &DEFAULT_VECTOR,&aix386_core_vec
-#else
-#define SELECT_VECS &DEFAULT_VECTOR
-#endif
-#endif
-#endif
-#endif
-
-/* All known xvecs. They are listed a second time below, since
+/* All known xvecs (even those that don't compile on all systems).
+ Alphabetized for easy reference.
+ They are listed a second time below, since
we can't intermix extern's and initializers. */
-extern bfd_target ecoff_little_vec;
-extern bfd_target ecoff_big_vec;
-extern bfd_target sunos_big_vec;
-extern bfd_target demo_64_vec;
-extern bfd_target srec_vec;
-extern bfd_target tekhex_vec;
+extern bfd_target a29kcoff_big_vec;
extern bfd_target a_out_adobe_vec;
-extern bfd_target b_out_vec_little_host;
+extern bfd_target aout_mips_big_vec;
+extern bfd_target aout_mips_little_vec;
+extern bfd_target apollocoff_vec;
extern bfd_target b_out_vec_big_host;
-extern bfd_target icoff_little_vec;
+extern bfd_target b_out_vec_little_host;
+extern bfd_target bfd_elf32_big_generic_vec;
+extern bfd_target bfd_elf32_bigmips_vec;
+extern bfd_target bfd_elf32_hppa_vec;
+extern bfd_target bfd_elf32_i386_vec;
+extern bfd_target bfd_elf32_i860_vec;
+extern bfd_target bfd_elf32_little_generic_vec;
+extern bfd_target bfd_elf32_littlemips_vec;
+extern bfd_target bfd_elf32_m68k_vec;
+extern bfd_target bfd_elf32_m88k_vec;
+extern bfd_target bfd_elf32_sparc_vec;
+extern bfd_target bfd_elf64_big_generic_vec;
+extern bfd_target bfd_elf64_little_generic_vec;
+/* start-sanitize-v9 */
+extern bfd_target bfd_elf64_sparc_vec;
+/* end-sanitize-v9 */
+extern bfd_target demo_64_vec;
+extern bfd_target ecoff_big_vec;
+extern bfd_target ecoff_little_vec;
+extern bfd_target ecoffalpha_little_vec;
+extern bfd_target h8300coff_vec;
+extern bfd_target h8500coff_vec;
+extern bfd_target host_aout_vec;
+extern bfd_target hp300bsd_vec;
+extern bfd_target hp300hpux_vec;
+extern bfd_target som_vec;
+extern bfd_target i386aout_vec;
+extern bfd_target i386bsd_vec;
+extern bfd_target netbsd386_vec;
+extern bfd_target i386coff_vec;
+extern bfd_target i386linux_vec;
+extern bfd_target i386lynx_aout_vec;
+extern bfd_target i386lynx_coff_vec;
+extern bfd_target i386mach3_vec;
extern bfd_target icoff_big_vec;
-extern bfd_target elf_little_vec;
-extern bfd_target elf_big_vec;
+extern bfd_target icoff_little_vec;
extern bfd_target ieee_vec;
-extern bfd_target oasys_vec;
-extern bfd_target m88kbcs_vec;
extern bfd_target m68kcoff_vec;
-extern bfd_target i386coff_vec;
-extern bfd_target i386aout_vec;
-extern bfd_target i386linux_vec;
-extern bfd_target a29kcoff_big_vec;
-extern bfd_target trad_core_vec;
-extern bfd_target sco_core_vec;
-extern bfd_target aix386_core_vec;
+extern bfd_target m68kcoffun_vec;
+extern bfd_target m68klynx_aout_vec;
+extern bfd_target m68klynx_coff_vec;
+extern bfd_target m88kbcs_vec;
+extern bfd_target newsos3_vec;
+extern bfd_target nlm32_big_generic_vec;
+extern bfd_target nlm32_i386_vec;
+extern bfd_target nlm32_sparc_vec;
+extern bfd_target nlm32_little_generic_vec;
+extern bfd_target nlm64_big_generic_vec;
+extern bfd_target nlm64_little_generic_vec;
+extern bfd_target oasys_vec;
extern bfd_target rs6000coff_vec;
-extern bfd_target h8300coff_vec;
-extern bfd_target z8kcoff_vec;
+extern bfd_target shcoff_vec;
+extern bfd_target sparclynx_aout_vec;
+extern bfd_target sparclynx_coff_vec;
+extern bfd_target sparccoff_vec;
+extern bfd_target sunos_big_vec;
+extern bfd_target tekhex_vec;
extern bfd_target we32kcoff_vec;
-#ifdef HOST_HPPAHPUX
-extern bfd_target hppa_vec;
-#endif
+extern bfd_target z8kcoff_vec;
-#ifdef DEFAULT_VECTOR
-extern bfd_target DEFAULT_VECTOR;
-#endif
+/* srec is always included. */
+extern bfd_target srec_vec;
+extern bfd_target symbolsrec_vec;
-#ifdef SELECT_VECS
+/* All of the xvecs for core files. */
+extern bfd_target aix386_core_vec;
+extern bfd_target hpux_core_vec;
+extern bfd_target hppabsd_core_vec;
+extern bfd_target irix_core_vec;
+extern bfd_target osf_core_vec;
+extern bfd_target sco_core_vec;
+extern bfd_target trad_core_vec;
+extern bfd_target ptrace_core_vec;
bfd_target *target_vector[] = {
- SELECT_VECS,
- 0
-};
-#else
+#ifdef SELECT_VECS
-bfd_target *target_vector[] = {
+ SELECT_VECS,
+
+#else /* not SELECT_VECS */
#ifdef DEFAULT_VECTOR
&DEFAULT_VECTOR,
#endif
+ /* This list is alphabetized to make it easy to compare
+ with other vector lists -- the decls above and
+ the case statement in configure.in.
+ Vectors that don't compile on all systems, or aren't finished,
+ should have an entry here with #if 0 around it, to show that
+ it wasn't omitted by mistake. */
+ &a29kcoff_big_vec,
+ &a_out_adobe_vec,
+#if 0 /* No one seems to use this. */
+ &aout_mips_big_vec,
+#endif
+ &aout_mips_little_vec,
+ &b_out_vec_big_host,
+ &b_out_vec_little_host,
- &i386coff_vec,
- &i386aout_vec,
- &ecoff_little_vec,
+ /* This, and other vectors, may not be used in any *.mt configuration.
+ But that does not mean they are unnecessary. If configured
+ --with-targets=all, objdump or gdb should be able to examine
+ the file even if we don't recognize the machine type. */
+ &bfd_elf32_big_generic_vec,
+ &bfd_elf32_bigmips_vec,
+ &bfd_elf32_hppa_vec,
+ &bfd_elf32_i386_vec,
+ &bfd_elf32_i860_vec,
+ &bfd_elf32_little_generic_vec,
+ &bfd_elf32_littlemips_vec,
+ &bfd_elf32_m68k_vec,
+ &bfd_elf32_m88k_vec,
+ &bfd_elf32_sparc_vec,
+#ifdef BFD64 /* No one seems to use this. */
+ &bfd_elf64_big_generic_vec,
+ &bfd_elf64_little_generic_vec,
+#endif
+/* start-sanitize-v9 */
+#if 0
+ &bfd_elf64_sparc_vec,
+#endif
+/* end-sanitize-v9 */
+#ifdef BFD64
+ &demo_64_vec, /* Only compiled if host has long-long support */
+#endif
&ecoff_big_vec,
+ &ecoff_little_vec,
+#if 0
+ &ecoffalpha_little_vec,
+#endif
+ &h8300coff_vec,
+ &h8500coff_vec,
+#if 0
+ /* Since a.out files lack decent magic numbers, no way to recognize
+ which kind of a.out file it is. */
+ &host_aout_vec,
+#endif
+#if 0 /* Clashes with sunos_big_vec magic no. */
+ &hp300bsd_vec,
+#endif
+ &hp300hpux_vec,
+#if defined (HOST_HPPAHPUX) || defined (HOST_HPPABSD)
+ &som_vec,
+#endif
+ &i386aout_vec,
+ &i386bsd_vec,
+ &netbsd386_vec,
+ &i386coff_vec,
+#if 0
+ /* Since a.out files lack decent magic numbers, no way to recognize
+ which kind of a.out file it is. */
+ &i386linux_vec,
+#endif
+ &i386lynx_aout_vec,
+ &i386lynx_coff_vec,
+ &icoff_big_vec,
+ &icoff_little_vec,
&ieee_vec,
+ &m68kcoff_vec,
+ &m68kcoffun_vec,
+ &m68klynx_aout_vec,
+ &m68klynx_coff_vec,
+ &m88kbcs_vec,
+ &newsos3_vec,
+ &nlm32_big_generic_vec,
+ &nlm32_i386_vec,
+ &nlm32_sparc_vec,
+#ifdef BFD64
+ &nlm64_big_generic_vec,
+ &nlm64_little_generic_vec,
+#endif
#if 0
/* We have no oasys tools anymore, so we can't test any of this
anymore. If you want to test the stuff yourself, go ahead...
steve@cygnus.com
Worse, since there is no magic number for archives, there
- can annoying target mis-matches. */
+ can be annoying target mis-matches. */
&oasys_vec,
#endif
+ &rs6000coff_vec,
+ &shcoff_vec,
+ &sparclynx_aout_vec,
+ &sparclynx_coff_vec,
&sunos_big_vec,
-#ifdef HOST_64_BIT
- &demo_64_vec, /* Only compiled if host has long-long support */
+#if 0
+ &tekhex_vec,
#endif
- &h8300coff_vec,
+ &we32kcoff_vec,
&z8kcoff_vec,
- &m88kbcs_vec,
+
+#endif /* not SELECT_VECS */
+
+/* Always support S-records, for convenience. */
&srec_vec,
-/* &tekhex_vec,*/
- &icoff_little_vec,
- &icoff_big_vec,
- &elf_little_vec,
- &elf_big_vec,
- &a_out_adobe_vec,
- &b_out_vec_little_host,
- &b_out_vec_big_host,
- &m68kcoff_vec,
- &a29kcoff_big_vec,
- &rs6000coff_vec,
-#ifdef HOST_HPPAHPUX
- &hppa_vec,
-#endif
- &we32kcoff_vec,
+ &symbolsrec_vec,
-#ifdef TRAD_CORE
- &trad_core_vec,
+/* Add any required traditional-core-file-handler. */
+
+#ifdef AIX386_CORE
+ &aix386_core_vec,
#endif
-#ifdef SCO_CORE
- &sco_core_vec,
+#ifdef HPUX_CORE
+ &hpux_core_vec,
#endif
-#ifdef AIX386_CORE
- &aix386_core_vec,
+#ifdef HPPABSD_CORE
+ &hppabsd_core_vec,
+#endif
+#ifdef IRIX_CORE
+ &irix_core_vec,
+#endif
+#ifdef OSF_CORE
+ &osf_core_vec,
+#endif
+#ifdef TRAD_CORE
+ &trad_core_vec,
#endif
- NULL, /* end of list marker */
-};
+#ifdef PTRACE_CORE
+ &ptrace_core_vec,
#endif
+ NULL /* end of list marker */
+};
+
/* default_vector[0] contains either the address of the default vector,
if there is one, or zero if there isn't. */
#ifdef DEFAULT_VECTOR
&DEFAULT_VECTOR,
#endif
- 0,
+ NULL
};
FUNCTION
bfd_find_target
+SYNOPSIS
+ bfd_target *bfd_find_target(CONST char *target_name, bfd *abfd);
+
DESCRIPTION
- Returns a pointer to the transfer vector for the object target
- named target_name. If target_name is NULL, chooses the one in
- the environment variable GNUTARGET; if that is null or not
- defined thenthe first entry in the target list is chosen.
+ Return a pointer to the transfer vector for the object target
+ named @var{target_name}. If @var{target_name} is <<NULL>>, choose the
+ one in the environment variable <<GNUTARGET>>; if that is null or not
+ defined, then choose the first entry in the target list.
Passing in the string "default" or setting the environment
variable to "default" will cause the first entry in the target
list to be returned, and "target_defaulted" will be set in the
BFD. This causes <<bfd_check_format>> to loop over all the
targets to find the one that matches the file being read.
-
-SYNOPSIS
- bfd_target *bfd_find_target(CONST char *, bfd *);
*/
bfd_target *
FUNCTION
bfd_target_list
-DESCRIPTION
- This function returns a freshly malloced NULL-terminated
- vector of the names of all the valid BFD targets. Do not
- modify the names
-
SYNOPSIS
CONST char **bfd_target_list(void);
+DESCRIPTION
+ Return a freshly malloced NULL-terminated
+ vector of the names of all the valid BFD targets. Do not
+ modify the names.
+
*/
CONST char **
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