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Diffstat (limited to 'binutils-2.17/bfd/bfd.c')
| -rw-r--r-- | binutils-2.17/bfd/bfd.c | 1515 |
1 files changed, 0 insertions, 1515 deletions
diff --git a/binutils-2.17/bfd/bfd.c b/binutils-2.17/bfd/bfd.c deleted file mode 100644 index 733f6ee0..00000000 --- a/binutils-2.17/bfd/bfd.c +++ /dev/null @@ -1,1515 +0,0 @@ -/* Generic BFD library interface and support routines. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002, 2003, 2004, 2005, 2006 - 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. */ - -/* -SECTION - <<typedef bfd>> - - A BFD has type <<bfd>>; objects of this type are the - cornerstone of any application using BFD. Using BFD - consists of making references though the BFD and to data in the BFD. - - Here is the structure that defines the type <<bfd>>. It - contains the major data about the file and pointers - to the rest of the data. - -CODE_FRAGMENT -. -.struct bfd -.{ -. {* A unique identifier of the BFD *} -. unsigned int id; -. -. {* The filename the application opened the BFD with. *} -. const char *filename; -. -. {* A pointer to the target jump table. *} -. const struct bfd_target *xvec; -. -. {* The IOSTREAM, and corresponding IO vector that provide access -. to the file backing the BFD. *} -. void *iostream; -. const struct bfd_iovec *iovec; -. -. {* Is the file descriptor being cached? That is, can it be closed as -. needed, and re-opened when accessed later? *} -. bfd_boolean cacheable; -. -. {* Marks whether there was a default target specified when the -. BFD was opened. This is used to select which matching algorithm -. to use to choose the back end. *} -. bfd_boolean target_defaulted; -. -. {* The caching routines use these to maintain a -. least-recently-used list of BFDs. *} -. struct bfd *lru_prev, *lru_next; -. -. {* When a file is closed by the caching routines, BFD retains -. state information on the file here... *} -. ufile_ptr where; -. -. {* ... and here: (``once'' means at least once). *} -. bfd_boolean opened_once; -. -. {* Set if we have a locally maintained mtime value, rather than -. getting it from the file each time. *} -. bfd_boolean mtime_set; -. -. {* File modified time, if mtime_set is TRUE. *} -. long mtime; -. -. {* Reserved for an unimplemented file locking extension. *} -. int ifd; -. -. {* The format which belongs to the BFD. (object, core, etc.) *} -. bfd_format format; -. -. {* The direction with which the BFD was opened. *} -. enum bfd_direction -. { -. no_direction = 0, -. read_direction = 1, -. write_direction = 2, -. both_direction = 3 -. } -. direction; -. -. {* Format_specific flags. *} -. flagword flags; -. -. {* Currently my_archive is tested before adding origin to -. anything. I believe that this can become always an add of -. origin, with origin set to 0 for non archive files. *} -. ufile_ptr origin; -. -. {* Remember when output has begun, to stop strange things -. from happening. *} -. bfd_boolean output_has_begun; -. -. {* A hash table for section names. *} -. struct bfd_hash_table section_htab; -. -. {* Pointer to linked list of sections. *} -. struct bfd_section *sections; -. -. {* The last section on the section list. *} -. struct bfd_section *section_last; -. -. {* The number of sections. *} -. unsigned int section_count; -. -. {* Stuff only useful for object files: -. The start address. *} -. bfd_vma start_address; -. -. {* Used for input and output. *} -. unsigned int symcount; -. -. {* Symbol table for output BFD (with symcount entries). *} -. struct bfd_symbol **outsymbols; -. -. {* Used for slurped dynamic symbol tables. *} -. unsigned int dynsymcount; -. -. {* Pointer to structure which contains architecture information. *} -. const struct bfd_arch_info *arch_info; -. -. {* Flag set if symbols from this BFD should not be exported. *} -. bfd_boolean no_export; -. -. {* Stuff only useful for archives. *} -. void *arelt_data; -. struct bfd *my_archive; {* The containing archive BFD. *} -. struct bfd *next; {* The next BFD in the archive. *} -. struct bfd *archive_head; {* The first BFD in the archive. *} -. bfd_boolean has_armap; -. -. {* A chain of BFD structures involved in a link. *} -. struct bfd *link_next; -. -. {* A field used by _bfd_generic_link_add_archive_symbols. This will -. be used only for archive elements. *} -. int archive_pass; -. -. {* Used by the back end to hold private data. *} -. union -. { -. struct aout_data_struct *aout_data; -. struct artdata *aout_ar_data; -. struct _oasys_data *oasys_obj_data; -. struct _oasys_ar_data *oasys_ar_data; -. struct coff_tdata *coff_obj_data; -. struct pe_tdata *pe_obj_data; -. struct xcoff_tdata *xcoff_obj_data; -. struct ecoff_tdata *ecoff_obj_data; -. struct ieee_data_struct *ieee_data; -. struct ieee_ar_data_struct *ieee_ar_data; -. struct srec_data_struct *srec_data; -. struct ihex_data_struct *ihex_data; -. struct tekhex_data_struct *tekhex_data; -. struct elf_obj_tdata *elf_obj_data; -. struct nlm_obj_tdata *nlm_obj_data; -. struct bout_data_struct *bout_data; -. struct mmo_data_struct *mmo_data; -. struct sun_core_struct *sun_core_data; -. struct sco5_core_struct *sco5_core_data; -. struct trad_core_struct *trad_core_data; -. struct som_data_struct *som_data; -. struct hpux_core_struct *hpux_core_data; -. struct hppabsd_core_struct *hppabsd_core_data; -. struct sgi_core_struct *sgi_core_data; -. struct lynx_core_struct *lynx_core_data; -. struct osf_core_struct *osf_core_data; -. struct cisco_core_struct *cisco_core_data; -. struct versados_data_struct *versados_data; -. struct netbsd_core_struct *netbsd_core_data; -. struct mach_o_data_struct *mach_o_data; -. struct mach_o_fat_data_struct *mach_o_fat_data; -. struct bfd_pef_data_struct *pef_data; -. struct bfd_pef_xlib_data_struct *pef_xlib_data; -. struct bfd_sym_data_struct *sym_data; -. void *any; -. } -. tdata; -. -. {* Used by the application to hold private data. *} -. void *usrdata; -. -. {* Where all the allocated stuff under this BFD goes. This is a -. struct objalloc *, but we use void * to avoid requiring the inclusion -. of objalloc.h. *} -. void *memory; -.}; -. -*/ - -#include "bfd.h" -#include "bfdver.h" -#include "sysdep.h" -#include <stdarg.h> -#include "libiberty.h" -#include "safe-ctype.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "coff/internal.h" -#include "coff/sym.h" -#include "libcoff.h" -#include "libecoff.h" -#undef obj_symbols -#include "elf-bfd.h" - -#ifndef EXIT_FAILURE -#define EXIT_FAILURE 1 -#endif - - -/* provide storage for subsystem, stack and heap data which may have been - passed in on the command line. Ld puts this data into a bfd_link_info - struct which ultimately gets passed in to the bfd. When it arrives, copy - it to the following struct so that the data will be available in coffcode.h - where it is needed. The typedef's used are defined in bfd.h */ - -/* -SECTION - Error reporting - - Most BFD functions return nonzero on success (check their - individual documentation for precise semantics). On an error, - they call <<bfd_set_error>> to set an error condition that callers - can check by calling <<bfd_get_error>>. - If that returns <<bfd_error_system_call>>, then check - <<errno>>. - - The easiest way to report a BFD error to the user is to - use <<bfd_perror>>. - -SUBSECTION - Type <<bfd_error_type>> - - The values returned by <<bfd_get_error>> are defined by the - enumerated type <<bfd_error_type>>. - -CODE_FRAGMENT -. -.typedef enum bfd_error -.{ -. bfd_error_no_error = 0, -. bfd_error_system_call, -. bfd_error_invalid_target, -. bfd_error_wrong_format, -. bfd_error_wrong_object_format, -. bfd_error_invalid_operation, -. bfd_error_no_memory, -. bfd_error_no_symbols, -. bfd_error_no_armap, -. bfd_error_no_more_archived_files, -. bfd_error_malformed_archive, -. bfd_error_file_not_recognized, -. bfd_error_file_ambiguously_recognized, -. bfd_error_no_contents, -. bfd_error_nonrepresentable_section, -. bfd_error_no_debug_section, -. bfd_error_bad_value, -. bfd_error_file_truncated, -. bfd_error_file_too_big, -. bfd_error_invalid_error_code -.} -.bfd_error_type; -. -*/ - -static bfd_error_type bfd_error = bfd_error_no_error; - -const char *const bfd_errmsgs[] = -{ - N_("No error"), - N_("System call error"), - N_("Invalid bfd target"), - N_("File in wrong format"), - N_("Archive object file in wrong format"), - N_("Invalid operation"), - N_("Memory exhausted"), - N_("No symbols"), - N_("Archive has no index; run ranlib to add one"), - N_("No more archived files"), - N_("Malformed archive"), - N_("File format not recognized"), - N_("File format is ambiguous"), - N_("Section has no contents"), - N_("Nonrepresentable section on output"), - N_("Symbol needs debug section which does not exist"), - N_("Bad value"), - N_("File truncated"), - N_("File too big"), - N_("#<Invalid error code>") -}; - -/* -FUNCTION - bfd_get_error - -SYNOPSIS - bfd_error_type bfd_get_error (void); - -DESCRIPTION - Return the current BFD error condition. -*/ - -bfd_error_type -bfd_get_error (void) -{ - return bfd_error; -} - -/* -FUNCTION - bfd_set_error - -SYNOPSIS - void bfd_set_error (bfd_error_type error_tag); - -DESCRIPTION - Set the BFD error condition to be @var{error_tag}. -*/ - -void -bfd_set_error (bfd_error_type error_tag) -{ - bfd_error = error_tag; -} - -/* -FUNCTION - bfd_errmsg - -SYNOPSIS - const char *bfd_errmsg (bfd_error_type error_tag); - -DESCRIPTION - Return a string describing the error @var{error_tag}, or - the system error if @var{error_tag} is <<bfd_error_system_call>>. -*/ - -const char * -bfd_errmsg (bfd_error_type error_tag) -{ -#ifndef errno - extern int errno; -#endif - if (error_tag == bfd_error_system_call) - return xstrerror (errno); - - if (error_tag > bfd_error_invalid_error_code) - error_tag = bfd_error_invalid_error_code; /* sanity check */ - - return _(bfd_errmsgs [error_tag]); -} - -/* -FUNCTION - bfd_perror - -SYNOPSIS - void bfd_perror (const char *message); - -DESCRIPTION - Print to the standard error stream a string describing the - last BFD error that occurred, or the last system error if - the last BFD error was a system call failure. If @var{message} - is non-NULL and non-empty, the error string printed is preceded - by @var{message}, a colon, and a space. It is followed by a newline. -*/ - -void -bfd_perror (const char *message) -{ - if (bfd_get_error () == bfd_error_system_call) - /* Must be a system error then. */ - perror ((char *) message); - else - { - if (message == NULL || *message == '\0') - fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); - else - fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); - } -} - -/* -SUBSECTION - BFD error handler - - Some BFD functions want to print messages describing the - problem. They call a BFD error handler function. This - function may be overridden by the program. - - The BFD error handler acts like printf. - -CODE_FRAGMENT -. -.typedef void (*bfd_error_handler_type) (const char *, ...); -. -*/ - -/* The program name used when printing BFD error messages. */ - -static const char *_bfd_error_program_name; - -/* This is the default routine to handle BFD error messages. - Like fprintf (stderr, ...), but also handles some extra format specifiers. - - %A section name from section. For group components, print group name too. - %B file name from bfd. For archive components, prints archive too. - */ - -void -_bfd_default_error_handler (const char *fmt, ...) -{ - va_list ap; - char *bufp; - const char *new_fmt, *p; - size_t avail = 1000; - char buf[1000]; - - if (_bfd_error_program_name != NULL) - fprintf (stderr, "%s: ", _bfd_error_program_name); - else - fprintf (stderr, "BFD: "); - - va_start (ap, fmt); - new_fmt = fmt; - bufp = buf; - - /* Reserve enough space for the existing format string. */ - avail -= strlen (fmt) + 1; - if (avail > 1000) - _exit (EXIT_FAILURE); - - p = fmt; - while (1) - { - char *q; - size_t len, extra, trim; - - p = strchr (p, '%'); - if (p == NULL || p[1] == '\0') - { - if (new_fmt == buf) - { - len = strlen (fmt); - memcpy (bufp, fmt, len + 1); - } - break; - } - - if (p[1] == 'A' || p[1] == 'B') - { - len = p - fmt; - memcpy (bufp, fmt, len); - bufp += len; - fmt = p + 2; - new_fmt = buf; - - /* If we run out of space, tough, you lose your ridiculously - long file or section name. It's not safe to try to alloc - memory here; We might be printing an out of memory message. */ - if (avail == 0) - { - *bufp++ = '*'; - *bufp++ = '*'; - *bufp = '\0'; - } - else - { - if (p[1] == 'B') - { - bfd *abfd = va_arg (ap, bfd *); - if (abfd->my_archive) - snprintf (bufp, avail, "%s(%s)", - abfd->my_archive->filename, abfd->filename); - else - snprintf (bufp, avail, "%s", abfd->filename); - } - else - { - asection *sec = va_arg (ap, asection *); - bfd *abfd = sec->owner; - const char *group = NULL; - struct coff_comdat_info *ci; - - if (abfd != NULL - && bfd_get_flavour (abfd) == bfd_target_elf_flavour - && elf_next_in_group (sec) != NULL - && (sec->flags & SEC_GROUP) == 0) - group = elf_group_name (sec); - else if (abfd != NULL - && bfd_get_flavour (abfd) == bfd_target_coff_flavour - && (ci = bfd_coff_get_comdat_section (sec->owner, - sec)) != NULL) - group = ci->name; - if (group != NULL) - snprintf (bufp, avail, "%s[%s]", sec->name, group); - else - snprintf (bufp, avail, "%s", sec->name); - } - len = strlen (bufp); - avail = avail - len + 2; - - /* We need to replace any '%' we printed by "%%". - First count how many. */ - q = bufp; - bufp += len; - extra = 0; - while ((q = strchr (q, '%')) != NULL) - { - ++q; - ++extra; - } - - /* If there isn't room, trim off the end of the string. */ - q = bufp; - bufp += extra; - if (extra > avail) - { - trim = extra - avail; - bufp -= trim; - do - { - if (*--q == '%') - --extra; - } - while (--trim != 0); - *q = '\0'; - avail = extra; - } - avail -= extra; - - /* Now double all '%' chars, shuffling the string as we go. */ - while (extra != 0) - { - while ((q[extra] = *q) != '%') - --q; - q[--extra] = '%'; - --q; - } - } - } - p = p + 2; - } - - vfprintf (stderr, new_fmt, ap); - va_end (ap); - - putc ('\n', stderr); -} - -/* This is a function pointer to the routine which should handle BFD - error messages. It is called when a BFD routine encounters an - error for which it wants to print a message. Going through a - function pointer permits a program linked against BFD to intercept - the messages and deal with them itself. */ - -bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler; - -/* -FUNCTION - bfd_set_error_handler - -SYNOPSIS - bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type); - -DESCRIPTION - Set the BFD error handler function. Returns the previous - function. -*/ - -bfd_error_handler_type -bfd_set_error_handler (bfd_error_handler_type pnew) -{ - bfd_error_handler_type pold; - - pold = _bfd_error_handler; - _bfd_error_handler = pnew; - return pold; -} - -/* -FUNCTION - bfd_set_error_program_name - -SYNOPSIS - void bfd_set_error_program_name (const char *); - -DESCRIPTION - Set the program name to use when printing a BFD error. This - is printed before the error message followed by a colon and - space. The string must not be changed after it is passed to - this function. -*/ - -void -bfd_set_error_program_name (const char *name) -{ - _bfd_error_program_name = name; -} - -/* -FUNCTION - bfd_get_error_handler - -SYNOPSIS - bfd_error_handler_type bfd_get_error_handler (void); - -DESCRIPTION - Return the BFD error handler function. -*/ - -bfd_error_handler_type -bfd_get_error_handler (void) -{ - return _bfd_error_handler; -} - -/* -SECTION - Miscellaneous - -SUBSECTION - Miscellaneous functions -*/ - -/* -FUNCTION - bfd_get_reloc_upper_bound - -SYNOPSIS - long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); - -DESCRIPTION - Return the number of bytes required to store the - relocation information associated with section @var{sect} - attached to bfd @var{abfd}. If an error occurs, return -1. - -*/ - -long -bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) -{ - if (abfd->format != bfd_object) - { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - - return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect)); -} - -/* -FUNCTION - bfd_canonicalize_reloc - -SYNOPSIS - long bfd_canonicalize_reloc - (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); - -DESCRIPTION - Call the back end associated with the open BFD - @var{abfd} and translate the external form of the relocation - information attached to @var{sec} into the internal canonical - form. Place the table into memory at @var{loc}, which has - been preallocated, usually by a call to - <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or - -1 on error. - - The @var{syms} table is also needed for horrible internal magic - reasons. - -*/ -long -bfd_canonicalize_reloc (bfd *abfd, - sec_ptr asect, - arelent **location, - asymbol **symbols) -{ - if (abfd->format != bfd_object) - { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - - return BFD_SEND (abfd, _bfd_canonicalize_reloc, - (abfd, asect, location, symbols)); -} - -/* -FUNCTION - bfd_set_reloc - -SYNOPSIS - void bfd_set_reloc - (bfd *abfd, asection *sec, arelent **rel, unsigned int count); - -DESCRIPTION - Set the relocation pointer and count within - section @var{sec} to the values @var{rel} and @var{count}. - The argument @var{abfd} is ignored. - -*/ - -void -bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, - sec_ptr asect, - arelent **location, - unsigned int count) -{ - asect->orelocation = location; - asect->reloc_count = count; -} - -/* -FUNCTION - bfd_set_file_flags - -SYNOPSIS - bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags); - -DESCRIPTION - Set the flag word in the BFD @var{abfd} to the value @var{flags}. - - Possible errors are: - o <<bfd_error_wrong_format>> - The target bfd was not of object format. - o <<bfd_error_invalid_operation>> - The target bfd was open for reading. - o <<bfd_error_invalid_operation>> - - The flag word contained a bit which was not applicable to the - type of file. E.g., an attempt was made to set the <<D_PAGED>> bit - on a BFD format which does not support demand paging. - -*/ - -bfd_boolean -bfd_set_file_flags (bfd *abfd, flagword flags) -{ - if (abfd->format != bfd_object) - { - bfd_set_error (bfd_error_wrong_format); - return FALSE; - } - - if (bfd_read_p (abfd)) - { - bfd_set_error (bfd_error_invalid_operation); - return FALSE; - } - - bfd_get_file_flags (abfd) = flags; - if ((flags & bfd_applicable_file_flags (abfd)) != flags) - { - bfd_set_error (bfd_error_invalid_operation); - return FALSE; - } - - return TRUE; -} - -void -bfd_assert (const char *file, int line) -{ - (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"), - BFD_VERSION_STRING, file, line); -} - -/* A more or less friendly abort message. In libbfd.h abort is - defined to call this function. */ - -void -_bfd_abort (const char *file, int line, const char *fn) -{ - if (fn != NULL) - (*_bfd_error_handler) - (_("BFD %s internal error, aborting at %s line %d in %s\n"), - BFD_VERSION_STRING, file, line, fn); - else - (*_bfd_error_handler) - (_("BFD %s internal error, aborting at %s line %d\n"), - BFD_VERSION_STRING, file, line); - (*_bfd_error_handler) (_("Please report this bug.\n")); - _exit (EXIT_FAILURE); -} - -/* -FUNCTION - bfd_get_arch_size - -SYNOPSIS - int bfd_get_arch_size (bfd *abfd); - -DESCRIPTION - Returns the architecture address size, in bits, as determined - by the object file's format. For ELF, this information is - included in the header. - -RETURNS - Returns the arch size in bits if known, <<-1>> otherwise. -*/ - -int -bfd_get_arch_size (bfd *abfd) -{ - if (abfd->xvec->flavour == bfd_target_elf_flavour) - return get_elf_backend_data (abfd)->s->arch_size; - - return -1; -} - -/* -FUNCTION - bfd_get_sign_extend_vma - -SYNOPSIS - int bfd_get_sign_extend_vma (bfd *abfd); - -DESCRIPTION - Indicates if the target architecture "naturally" sign extends - an address. Some architectures implicitly sign extend address - values when they are converted to types larger than the size - of an address. For instance, bfd_get_start_address() will - return an address sign extended to fill a bfd_vma when this is - the case. - -RETURNS - Returns <<1>> if the target architecture is known to sign - extend addresses, <<0>> if the target architecture is known to - not sign extend addresses, and <<-1>> otherwise. -*/ - -int -bfd_get_sign_extend_vma (bfd *abfd) -{ - char *name; - - if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) - return get_elf_backend_data (abfd)->sign_extend_vma; - - name = bfd_get_target (abfd); - - /* Return a proper value for DJGPP & PE COFF (x86 COFF variants). - This function is required for DWARF2 support, but there is - no place to store this information in the COFF back end. - Should enough other COFF targets add support for DWARF2, - a place will have to be found. Until then, this hack will do. */ - if (strncmp (name, "coff-go32", sizeof ("coff-go32") - 1) == 0 - || strcmp (name, "pe-i386") == 0 - || strcmp (name, "pei-i386") == 0) - return 1; - - bfd_set_error (bfd_error_wrong_format); - return -1; -} - -/* -FUNCTION - bfd_set_start_address - -SYNOPSIS - bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma); - -DESCRIPTION - Make @var{vma} the entry point of output BFD @var{abfd}. - -RETURNS - Returns <<TRUE>> on success, <<FALSE>> otherwise. -*/ - -bfd_boolean -bfd_set_start_address (bfd *abfd, bfd_vma vma) -{ - abfd->start_address = vma; - return TRUE; -} - -/* -FUNCTION - bfd_get_gp_size - -SYNOPSIS - unsigned int bfd_get_gp_size (bfd *abfd); - -DESCRIPTION - Return the maximum size of objects to be optimized using the GP - register under MIPS ECOFF. This is typically set by the <<-G>> - argument to the compiler, assembler or linker. -*/ - -unsigned int -bfd_get_gp_size (bfd *abfd) -{ - if (abfd->format == bfd_object) - { - if (abfd->xvec->flavour == bfd_target_ecoff_flavour) - return ecoff_data (abfd)->gp_size; - else if (abfd->xvec->flavour == bfd_target_elf_flavour) - return elf_gp_size (abfd); - } - return 0; -} - -/* -FUNCTION - bfd_set_gp_size - -SYNOPSIS - void bfd_set_gp_size (bfd *abfd, unsigned int i); - -DESCRIPTION - Set the maximum size of objects to be optimized using the GP - register under ECOFF or MIPS ELF. This is typically set by - the <<-G>> argument to the compiler, assembler or linker. -*/ - -void -bfd_set_gp_size (bfd *abfd, unsigned int i) -{ - /* Don't try to set GP size on an archive or core file! */ - if (abfd->format != bfd_object) - return; - - if (abfd->xvec->flavour == bfd_target_ecoff_flavour) - ecoff_data (abfd)->gp_size = i; - else if (abfd->xvec->flavour == bfd_target_elf_flavour) - elf_gp_size (abfd) = i; -} - -/* Get the GP value. This is an internal function used by some of the - relocation special_function routines on targets which support a GP - register. */ - -bfd_vma -_bfd_get_gp_value (bfd *abfd) -{ - if (! abfd) - return 0; - if (abfd->format != bfd_object) - return 0; - - if (abfd->xvec->flavour == bfd_target_ecoff_flavour) - return ecoff_data (abfd)->gp; - else if (abfd->xvec->flavour == bfd_target_elf_flavour) - return elf_gp (abfd); - - return 0; -} - -/* Set the GP value. */ - -void -_bfd_set_gp_value (bfd *abfd, bfd_vma v) -{ - if (! abfd) - BFD_FAIL (); - if (abfd->format != bfd_object) - return; - - if (abfd->xvec->flavour == bfd_target_ecoff_flavour) - ecoff_data (abfd)->gp = v; - else if (abfd->xvec->flavour == bfd_target_elf_flavour) - elf_gp (abfd) = v; -} - -/* -FUNCTION - bfd_scan_vma - -SYNOPSIS - bfd_vma bfd_scan_vma (const char *string, const char **end, int base); - -DESCRIPTION - Convert, like <<strtoul>>, a numerical expression - @var{string} into a <<bfd_vma>> integer, and return that integer. - (Though without as many bells and whistles as <<strtoul>>.) - The expression is assumed to be unsigned (i.e., positive). - If given a @var{base}, it is used as the base for conversion. - A base of 0 causes the function to interpret the string - in hex if a leading "0x" or "0X" is found, otherwise - in octal if a leading zero is found, otherwise in decimal. - - If the value would overflow, the maximum <<bfd_vma>> value is - returned. -*/ - -bfd_vma -bfd_scan_vma (const char *string, const char **end, int base) -{ - bfd_vma value; - bfd_vma cutoff; - unsigned int cutlim; - int overflow; - - /* Let the host do it if possible. */ - if (sizeof (bfd_vma) <= sizeof (unsigned long)) - return strtoul (string, (char **) end, base); - -#ifdef HAVE_STRTOULL - if (sizeof (bfd_vma) <= sizeof (unsigned long long)) - return strtoull (string, (char **) end, base); -#endif - - if (base == 0) - { - if (string[0] == '0') - { - if ((string[1] == 'x') || (string[1] == 'X')) - base = 16; - else - base = 8; - } - } - - if ((base < 2) || (base > 36)) - base = 10; - - if (base == 16 - && string[0] == '0' - && (string[1] == 'x' || string[1] == 'X') - && ISXDIGIT (string[2])) - { - string += 2; - } - - cutoff = (~ (bfd_vma) 0) / (bfd_vma) base; - cutlim = (~ (bfd_vma) 0) % (bfd_vma) base; - value = 0; - overflow = 0; - while (1) - { - unsigned int digit; - - digit = *string; - if (ISDIGIT (digit)) - digit = digit - '0'; - else if (ISALPHA (digit)) - digit = TOUPPER (digit) - 'A' + 10; - else - break; - if (digit >= (unsigned int) base) - break; - if (value > cutoff || (value == cutoff && digit > cutlim)) - overflow = 1; - value = value * base + digit; - ++string; - } - - if (overflow) - value = ~ (bfd_vma) 0; - - if (end != NULL) - *end = string; - - return value; -} - -/* -FUNCTION - bfd_copy_private_header_data - -SYNOPSIS - bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd); - -DESCRIPTION - Copy private BFD header information from the BFD @var{ibfd} to the - the BFD @var{obfd}. This copies information that may require - sections to exist, but does not require symbol tables. Return - <<true>> on success, <<false>> on error. - Possible error returns are: - - o <<bfd_error_no_memory>> - - Not enough memory exists to create private data for @var{obfd}. - -.#define bfd_copy_private_header_data(ibfd, obfd) \ -. BFD_SEND (obfd, _bfd_copy_private_header_data, \ -. (ibfd, obfd)) - -*/ - -/* -FUNCTION - bfd_copy_private_bfd_data - -SYNOPSIS - bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd); - -DESCRIPTION - Copy private BFD information from the BFD @var{ibfd} to the - the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error. - Possible error returns are: - - o <<bfd_error_no_memory>> - - Not enough memory exists to create private data for @var{obfd}. - -.#define bfd_copy_private_bfd_data(ibfd, obfd) \ -. BFD_SEND (obfd, _bfd_copy_private_bfd_data, \ -. (ibfd, obfd)) - -*/ - -/* -FUNCTION - bfd_merge_private_bfd_data - -SYNOPSIS - bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd); - -DESCRIPTION - Merge private BFD information from the BFD @var{ibfd} to the - the output file BFD @var{obfd} when linking. Return <<TRUE>> - on success, <<FALSE>> on error. Possible error returns are: - - o <<bfd_error_no_memory>> - - Not enough memory exists to create private data for @var{obfd}. - -.#define bfd_merge_private_bfd_data(ibfd, obfd) \ -. BFD_SEND (obfd, _bfd_merge_private_bfd_data, \ -. (ibfd, obfd)) - -*/ - -/* -FUNCTION - bfd_set_private_flags - -SYNOPSIS - bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); - -DESCRIPTION - Set private BFD flag information in the BFD @var{abfd}. - Return <<TRUE>> on success, <<FALSE>> on error. Possible error - returns are: - - o <<bfd_error_no_memory>> - - Not enough memory exists to create private data for @var{obfd}. - -.#define bfd_set_private_flags(abfd, flags) \ -. BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) - -*/ - -/* -FUNCTION - Other functions - -DESCRIPTION - The following functions exist but have not yet been documented. - -.#define bfd_sizeof_headers(abfd, reloc) \ -. BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc)) -. -.#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \ -. BFD_SEND (abfd, _bfd_find_nearest_line, \ -. (abfd, sec, syms, off, file, func, line)) -. -.#define bfd_find_line(abfd, syms, sym, file, line) \ -. BFD_SEND (abfd, _bfd_find_line, \ -. (abfd, syms, sym, file, line)) -. -.#define bfd_find_inliner_info(abfd, file, func, line) \ -. BFD_SEND (abfd, _bfd_find_inliner_info, \ -. (abfd, file, func, line)) -. -.#define bfd_debug_info_start(abfd) \ -. BFD_SEND (abfd, _bfd_debug_info_start, (abfd)) -. -.#define bfd_debug_info_end(abfd) \ -. BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) -. -.#define bfd_debug_info_accumulate(abfd, section) \ -. BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section)) -. -.#define bfd_stat_arch_elt(abfd, stat) \ -. BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) -. -.#define bfd_update_armap_timestamp(abfd) \ -. BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd)) -. -.#define bfd_set_arch_mach(abfd, arch, mach)\ -. BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach)) -. -.#define bfd_relax_section(abfd, section, link_info, again) \ -. BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again)) -. -.#define bfd_gc_sections(abfd, link_info) \ -. BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info)) -. -.#define bfd_merge_sections(abfd, link_info) \ -. BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info)) -. -.#define bfd_is_group_section(abfd, sec) \ -. BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec)) -. -.#define bfd_discard_group(abfd, sec) \ -. BFD_SEND (abfd, _bfd_discard_group, (abfd, sec)) -. -.#define bfd_link_hash_table_create(abfd) \ -. BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd)) -. -.#define bfd_link_hash_table_free(abfd, hash) \ -. BFD_SEND (abfd, _bfd_link_hash_table_free, (hash)) -. -.#define bfd_link_add_symbols(abfd, info) \ -. BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) -. -.#define bfd_link_just_syms(abfd, sec, info) \ -. BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) -. -.#define bfd_final_link(abfd, info) \ -. BFD_SEND (abfd, _bfd_final_link, (abfd, info)) -. -.#define bfd_free_cached_info(abfd) \ -. BFD_SEND (abfd, _bfd_free_cached_info, (abfd)) -. -.#define bfd_get_dynamic_symtab_upper_bound(abfd) \ -. BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd)) -. -.#define bfd_print_private_bfd_data(abfd, file)\ -. BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file)) -. -.#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \ -. BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols)) -. -.#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \ -. BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \ -. dyncount, dynsyms, ret)) -. -.#define bfd_get_dynamic_reloc_upper_bound(abfd) \ -. BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd)) -. -.#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \ -. BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) -. -.extern bfd_byte *bfd_get_relocated_section_contents -. (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, -. bfd_boolean, asymbol **); -. - -*/ - -bfd_byte * -bfd_get_relocated_section_contents (bfd *abfd, - struct bfd_link_info *link_info, - struct bfd_link_order *link_order, - bfd_byte *data, - bfd_boolean relocatable, - asymbol **symbols) -{ - bfd *abfd2; - bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *, - bfd_byte *, bfd_boolean, asymbol **); - - if (link_order->type == bfd_indirect_link_order) - { - abfd2 = link_order->u.indirect.section->owner; - if (abfd2 == NULL) - abfd2 = abfd; - } - else - abfd2 = abfd; - - fn = abfd2->xvec->_bfd_get_relocated_section_contents; - - return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); -} - -/* Record information about an ELF program header. */ - -bfd_boolean -bfd_record_phdr (bfd *abfd, - unsigned long type, - bfd_boolean flags_valid, - flagword flags, - bfd_boolean at_valid, - bfd_vma at, - bfd_boolean includes_filehdr, - bfd_boolean includes_phdrs, - unsigned int count, - asection **secs) -{ - struct elf_segment_map *m, **pm; - bfd_size_type amt; - - if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) - return TRUE; - - amt = sizeof (struct elf_segment_map); - amt += ((bfd_size_type) count - 1) * sizeof (asection *); - m = bfd_alloc (abfd, amt); - if (m == NULL) - return FALSE; - - m->next = NULL; - m->p_type = type; - m->p_flags = flags; - m->p_paddr = at; - m->p_flags_valid = flags_valid; - m->p_paddr_valid = at_valid; - m->includes_filehdr = includes_filehdr; - m->includes_phdrs = includes_phdrs; - m->count = count; - if (count > 0) - memcpy (m->sections, secs, count * sizeof (asection *)); - - for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) - ; - *pm = m; - - return TRUE; -} - -void -bfd_sprintf_vma (bfd *abfd, char *buf, bfd_vma value) -{ - if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) - get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value); - else - sprintf_vma (buf, value); -} - -void -bfd_fprintf_vma (bfd *abfd, void *stream, bfd_vma value) -{ - if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) - get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value); - else - fprintf_vma ((FILE *) stream, value); -} - -/* -FUNCTION - bfd_alt_mach_code - -SYNOPSIS - bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); - -DESCRIPTION - - When more than one machine code number is available for the - same machine type, this function can be used to switch between - the preferred one (alternative == 0) and any others. Currently, - only ELF supports this feature, with up to two alternate - machine codes. -*/ - -bfd_boolean -bfd_alt_mach_code (bfd *abfd, int alternative) -{ - if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) - { - int code; - - switch (alternative) - { - case 0: - code = get_elf_backend_data (abfd)->elf_machine_code; - break; - - case 1: - code = get_elf_backend_data (abfd)->elf_machine_alt1; - if (code == 0) - return FALSE; - break; - - case 2: - code = get_elf_backend_data (abfd)->elf_machine_alt2; - if (code == 0) - return FALSE; - break; - - default: - return FALSE; - } - - elf_elfheader (abfd)->e_machine = code; - - return TRUE; - } - - return FALSE; -} - -/* -CODE_FRAGMENT - -.struct bfd_preserve -.{ -. void *marker; -. void *tdata; -. flagword flags; -. const struct bfd_arch_info *arch_info; -. struct bfd_section *sections; -. struct bfd_section *section_last; -. unsigned int section_count; -. struct bfd_hash_table section_htab; -.}; -. -*/ - -/* -FUNCTION - bfd_preserve_save - -SYNOPSIS - bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *); - -DESCRIPTION - When testing an object for compatibility with a particular - target back-end, the back-end object_p function needs to set - up certain fields in the bfd on successfully recognizing the - object. This typically happens in a piecemeal fashion, with - failures possible at many points. On failure, the bfd is - supposed to be restored to its initial state, which is - virtually impossible. However, restoring a subset of the bfd - state works in practice. This function stores the subset and - reinitializes the bfd. - -*/ - -bfd_boolean -bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve) -{ - preserve->tdata = abfd->tdata.any; - preserve->arch_info = abfd->arch_info; - preserve->flags = abfd->flags; - preserve->sections = abfd->sections; - preserve->section_last = abfd->section_last; - preserve->section_count = abfd->section_count; - preserve->section_htab = abfd->section_htab; - - if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc, - sizeof (struct section_hash_entry))) - return FALSE; - - abfd->tdata.any = NULL; - abfd->arch_info = &bfd_default_arch_struct; - abfd->flags &= BFD_IN_MEMORY; - abfd->sections = NULL; - abfd->section_last = NULL; - abfd->section_count = 0; - - return TRUE; -} - -/* -FUNCTION - bfd_preserve_restore - -SYNOPSIS - void bfd_preserve_restore (bfd *, struct bfd_preserve *); - -DESCRIPTION - This function restores bfd state saved by bfd_preserve_save. - If MARKER is non-NULL in struct bfd_preserve then that block - and all subsequently bfd_alloc'd memory is freed. - -*/ - -void -bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve) -{ - bfd_hash_table_free (&abfd->section_htab); - - abfd->tdata.any = preserve->tdata; - abfd->arch_info = preserve->arch_info; - abfd->flags = preserve->flags; - abfd->section_htab = preserve->section_htab; - abfd->sections = preserve->sections; - abfd->section_last = preserve->section_last; - abfd->section_count = preserve->section_count; - - /* bfd_release frees all memory more recently bfd_alloc'd than - its arg, as well as its arg. */ - if (preserve->marker != NULL) - { - bfd_release (abfd, preserve->marker); - preserve->marker = NULL; - } -} - -/* -FUNCTION - bfd_preserve_finish - -SYNOPSIS - void bfd_preserve_finish (bfd *, struct bfd_preserve *); - -DESCRIPTION - This function should be called when the bfd state saved by - bfd_preserve_save is no longer needed. ie. when the back-end - object_p function returns with success. - -*/ - -void -bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve) -{ - /* It would be nice to be able to free more memory here, eg. old - tdata, but that's not possible since these blocks are sitting - inside bfd_alloc'd memory. The section hash is on a separate - objalloc. */ - bfd_hash_table_free (&preserve->section_htab); -} |