X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Fbfd.c;h=77582ec82fe8aedb106d2ce13d0287ab274937e0;hb=53ed733c446e8834cfeb43b44de693908a7a90a6;hp=cff7119ee29555b479f1221d61dfeee5f4fe9363;hpb=3af9a47b1c2bef84a3d162e6bcea545212dd1e60;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/bfd.c b/bfd/bfd.c index cff7119ee2..77582ec82f 100644 --- a/bfd/bfd.c +++ b/bfd/bfd.c @@ -1,6 +1,6 @@ /* Generic BFD library interface and support routines. Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002 + 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Written by Cygnus Support. @@ -8,7 +8,7 @@ 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 + 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, @@ -18,7 +18,8 @@ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ /* SECTION @@ -34,48 +35,39 @@ SECTION CODE_FRAGMENT . -.struct _bfd +.enum bfd_direction +. { +. no_direction = 0, +. read_direction = 1, +. write_direction = 2, +. both_direction = 3 +. }; +. +.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; . -. {* To avoid dragging too many header files into every file that -. includes `<>', IOSTREAM has been declared as a "char *", -. and MTIME as a "long". Their correct types, to which they -. are cast when used, are "FILE *" and "time_t". The iostream -. is the result of an fopen on the filename. However, if the -. BFD_IN_MEMORY flag is set, then iostream is actually a pointer -. to a bfd_in_memory struct. *} -. PTR iostream; -. -. {* Is the file descriptor being cached? That is, can it be closed as -. needed, and re-opened when accessed later? *} -. 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. *} -. boolean target_defaulted; +. {* The IOSTREAM, and corresponding IO vector that provide access +. to the file backing the BFD. *} +. void *iostream; +. const struct bfd_iovec *iovec; . . {* The caching routines use these to maintain a . least-recently-used list of BFDs. *} -. struct _bfd *lru_prev, *lru_next; +. 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). *} -. boolean opened_once; -. -. {* Set if we have a locally maintained mtime value, rather than -. getting it from the file each time. *} -. boolean mtime_set; -. -. {* File modified time, if mtime_set is true. *} +. {* File modified time, if mtime_set is TRUE. *} . long mtime; . . {* Reserved for an unimplemented file locking extension. *} @@ -85,35 +77,115 @@ CODE_FRAGMENT . 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; +. enum bfd_direction direction; . . {* Format_specific flags. *} . flagword flags; . +. {* Values that may appear in the flags field of a BFD. These also +. appear in the object_flags field of the bfd_target structure, where +. they indicate the set of flags used by that backend (not all flags +. are meaningful for all object file formats) (FIXME: at the moment, +. the object_flags values have mostly just been copied from backend +. to another, and are not necessarily correct). *} +. +.#define BFD_NO_FLAGS 0x00 +. +. {* BFD contains relocation entries. *} +.#define HAS_RELOC 0x01 +. +. {* BFD is directly executable. *} +.#define EXEC_P 0x02 +. +. {* BFD has line number information (basically used for F_LNNO in a +. COFF header). *} +.#define HAS_LINENO 0x04 +. +. {* BFD has debugging information. *} +.#define HAS_DEBUG 0x08 +. +. {* BFD has symbols. *} +.#define HAS_SYMS 0x10 +. +. {* BFD has local symbols (basically used for F_LSYMS in a COFF +. header). *} +.#define HAS_LOCALS 0x20 +. +. {* BFD is a dynamic object. *} +.#define DYNAMIC 0x40 +. +. {* Text section is write protected (if D_PAGED is not set, this is +. like an a.out NMAGIC file) (the linker sets this by default, but +. clears it for -r or -N). *} +.#define WP_TEXT 0x80 +. +. {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the +. linker sets this by default, but clears it for -r or -n or -N). *} +.#define D_PAGED 0x100 +. +. {* BFD is relaxable (this means that bfd_relax_section may be able to +. do something) (sometimes bfd_relax_section can do something even if +. this is not set). *} +.#define BFD_IS_RELAXABLE 0x200 +. +. {* This may be set before writing out a BFD to request using a +. traditional format. For example, this is used to request that when +. writing out an a.out object the symbols not be hashed to eliminate +. duplicates. *} +.#define BFD_TRADITIONAL_FORMAT 0x400 +. +. {* This flag indicates that the BFD contents are actually cached +. in memory. If this is set, iostream points to a bfd_in_memory +. struct. *} +.#define BFD_IN_MEMORY 0x800 +. +. {* The sections in this BFD specify a memory page. *} +.#define HAS_LOAD_PAGE 0x1000 +. +. {* This BFD has been created by the linker and doesn't correspond +. to any input file. *} +.#define BFD_LINKER_CREATED 0x2000 +. +. {* This may be set before writing out a BFD to request that it +. be written using values for UIDs, GIDs, timestamps, etc. that +. will be consistent from run to run. *} +.#define BFD_DETERMINISTIC_OUTPUT 0x4000 +. +. {* Compress sections in this BFD. *} +.#define BFD_COMPRESS 0x8000 +. +. {* Decompress sections in this BFD. *} +.#define BFD_DECOMPRESS 0x10000 +. +. {* Flags bits to be saved in bfd_preserve_save. *} +.#define BFD_FLAGS_SAVED \ +. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS) +. +. {* Flags bits which are for BFD use only. *} +.#define BFD_FLAGS_FOR_BFD_USE_MASK \ +. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \ +. | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT) +. . {* 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. *} -. boolean output_has_begun; +. {* The origin in the archive of the proxy entry. This will +. normally be the same as origin, except for thin archives, +. when it will contain the current offset of the proxy in the +. thin archive rather than the offset of the bfd in its actual +. container. *} +. ufile_ptr proxy_origin; . . {* A hash table for section names. *} . struct bfd_hash_table section_htab; . . {* Pointer to linked list of sections. *} -. struct sec *sections; +. struct bfd_section *sections; . -. {* The place where we add to the section list. *} -. struct sec **section_tail; +. {* The last section on the section list. *} +. struct bfd_section *section_last; . . {* The number of sections. *} . unsigned int section_count; @@ -125,8 +197,9 @@ CODE_FRAGMENT . {* Used for input and output. *} . unsigned int symcount; . -. {* Symbol table for output BFD (with symcount entries). *} -. struct symbol_cache_entry **outsymbols; +. {* Symbol table for output BFD (with symcount entries). +. Also used by the linker to cache input BFD symbols. *} +. struct bfd_symbol **outsymbols; . . {* Used for slurped dynamic symbol tables. *} . unsigned int dynsymcount; @@ -135,14 +208,15 @@ CODE_FRAGMENT . const struct bfd_arch_info *arch_info; . . {* Stuff only useful for archives. *} -. PTR 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. *} -. boolean has_armap; +. void *arelt_data; +. struct bfd *my_archive; {* The containing archive BFD. *} +. struct bfd *archive_next; {* The next BFD in the archive. *} +. struct bfd *archive_head; {* The first BFD in the archive. *} +. struct bfd *nested_archives; {* List of nested archive in a flattened +. thin archive. *} . . {* A chain of BFD structures involved in a link. *} -. struct _bfd *link_next; +. struct bfd *link_next; . . {* A field used by _bfd_generic_link_add_archive_symbols. This will . be used only for archive elements. *} @@ -162,6 +236,7 @@ CODE_FRAGMENT . struct ieee_data_struct *ieee_data; . struct ieee_ar_data_struct *ieee_ar_data; . struct srec_data_struct *srec_data; +. struct verilog_data_struct *verilog_data; . struct ihex_data_struct *ihex_data; . struct tekhex_data_struct *tekhex_data; . struct elf_obj_tdata *elf_obj_data; @@ -182,35 +257,64 @@ CODE_FRAGMENT . 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 plugin_data_struct *plugin_data; . struct bfd_pef_data_struct *pef_data; . struct bfd_pef_xlib_data_struct *pef_xlib_data; . struct bfd_sym_data_struct *sym_data; -. PTR any; +. void *any; . } . tdata; . . {* Used by the application to hold private data. *} -. PTR usrdata; +. void *usrdata; . . {* Where all the allocated stuff under this BFD goes. This is a -. struct objalloc *, but we use PTR to avoid requiring the inclusion of -. objalloc.h. *} -. PTR memory; +. struct objalloc *, but we use void * to avoid requiring the inclusion +. of objalloc.h. *} +. void *memory; +. +. {* Is the file descriptor being cached? That is, can it be closed as +. needed, and re-opened when accessed later? *} +. unsigned int cacheable : 1; +. +. {* 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. *} +. unsigned int target_defaulted : 1; +. +. {* ... and here: (``once'' means at least once). *} +. unsigned int opened_once : 1; +. +. {* Set if we have a locally maintained mtime value, rather than +. getting it from the file each time. *} +. unsigned int mtime_set : 1; +. +. {* Flag set if symbols from this BFD should not be exported. *} +. unsigned int no_export : 1; +. +. {* Remember when output has begun, to stop strange things +. from happening. *} +. unsigned int output_has_begun : 1; +. +. {* Have archive map. *} +. unsigned int has_armap : 1; +. +. {* Set if this is a thin archive. *} +. unsigned int is_thin_archive : 1; +. +. {* Set if only required symbols should be added in the link hash table for +. this object. Used by VMS linkers. *} +. unsigned int selective_search : 1; .}; . */ -#include "bfd.h" -#include "bfdver.h" #include "sysdep.h" - -#ifdef ANSI_PROTOTYPES #include -#else -#include -#endif - +#include "bfd.h" +#include "bfdver.h" #include "libiberty.h" +#include "demangle.h" #include "safe-ctype.h" #include "bfdlink.h" #include "libbfd.h" @@ -220,6 +324,11 @@ CODE_FRAGMENT #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 @@ -270,6 +379,7 @@ CODE_FRAGMENT . bfd_error_bad_value, . bfd_error_file_truncated, . bfd_error_file_too_big, +. bfd_error_on_input, . bfd_error_invalid_error_code .} .bfd_error_type; @@ -277,6 +387,8 @@ CODE_FRAGMENT */ static bfd_error_type bfd_error = bfd_error_no_error; +static bfd *input_bfd = NULL; +static bfd_error_type input_error = bfd_error_no_error; const char *const bfd_errmsgs[] = { @@ -299,6 +411,7 @@ const char *const bfd_errmsgs[] = N_("Bad value"), N_("File truncated"), N_("File too big"), + N_("Error reading %s: %s"), N_("#") }; @@ -314,7 +427,7 @@ DESCRIPTION */ bfd_error_type -bfd_get_error () +bfd_get_error (void) { return bfd_error; } @@ -324,17 +437,32 @@ FUNCTION bfd_set_error SYNOPSIS - void bfd_set_error (bfd_error_type error_tag); + void bfd_set_error (bfd_error_type error_tag, ...); DESCRIPTION Set the BFD error condition to be @var{error_tag}. + If @var{error_tag} is bfd_error_on_input, then this function + takes two more parameters, the input bfd where the error + occurred, and the bfd_error_type error. */ void -bfd_set_error (error_tag) - bfd_error_type error_tag; +bfd_set_error (bfd_error_type error_tag, ...) { bfd_error = error_tag; + if (error_tag == bfd_error_on_input) + { + /* This is an error that occurred during bfd_close when + writing an archive, but on one of the input files. */ + va_list ap; + + va_start (ap, error_tag); + input_bfd = va_arg (ap, bfd *); + input_error = (bfd_error_type) va_arg (ap, int); + if (input_error >= bfd_error_on_input) + abort (); + va_end (ap); + } } /* @@ -350,20 +478,31 @@ DESCRIPTION */ const char * -bfd_errmsg (error_tag) - bfd_error_type error_tag; +bfd_errmsg (bfd_error_type error_tag) { #ifndef errno extern int errno; #endif + if (error_tag == bfd_error_on_input) + { + char *buf; + const char *msg = bfd_errmsg (input_error); + + if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg) + != -1) + return buf; + + /* Ick, what to do on out of memory? */ + return msg; + } + if (error_tag == bfd_error_system_call) return xstrerror (errno); - if ((((int) error_tag < (int) bfd_error_no_error) || - ((int) error_tag > (int) bfd_error_invalid_error_code))) - error_tag = bfd_error_invalid_error_code;/* sanity check */ + if (error_tag > bfd_error_invalid_error_code) + error_tag = bfd_error_invalid_error_code; /* sanity check */ - return _(bfd_errmsgs [(int)error_tag]); + return _(bfd_errmsgs [error_tag]); } /* @@ -382,19 +521,14 @@ DESCRIPTION */ void -bfd_perror (message) - const char *message; +bfd_perror (const char *message) { - if (bfd_get_error () == bfd_error_system_call) - /* Must be a system error then. */ - perror ((char *)message); + fflush (stdout); + if (message == NULL || *message == '\0') + fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ())); 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 ())); - } + fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ())); + fflush (stderr); } /* @@ -403,13 +537,13 @@ SUBSECTION Some BFD functions want to print messages describing the problem. They call a BFD error handler function. This - function may be overriden by the program. + function may be overridden by the program. The BFD error handler acts like printf. CODE_FRAGMENT . -.typedef void (*bfd_error_handler_type) PARAMS ((const char *, ...)); +.typedef void (*bfd_error_handler_type) (const char *, ...); . */ @@ -417,24 +551,181 @@ CODE_FRAGMENT static const char *_bfd_error_program_name; -/* This is the default routine to handle BFD error messages. */ +/* This is the default routine to handle BFD error messages. + Like fprintf (stderr, ...), but also handles some extra format specifiers. -static void _bfd_default_error_handler PARAMS ((const char *s, ...)); + %A section name from section. For group components, print group name too. + %B file name from bfd. For archive components, prints archive too. -static void -_bfd_default_error_handler VPARAMS ((const char *s, ...)) + Note - because these two extra format specifiers require special handling + they are scanned for and processed in this function, before calling + vfprintf. This means that the *arguments* for these format specifiers + must be the first ones in the variable argument list, regardless of where + the specifiers appear in the format string. Thus for example calling + this function with a format string of: + + "blah %s blah %A blah %d blah %B" + + would involve passing the arguments as: + + "blah %s blah %A blah %d blah %B", + asection_for_the_%A, + bfd_for_the_%B, + string_for_the_%s, + integer_for_the_%d); + */ + +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]; + + /* PR 4992: Don't interrupt output being sent to stdout. */ + fflush (stdout); + if (_bfd_error_program_name != NULL) fprintf (stderr, "%s: ", _bfd_error_program_name); else fprintf (stderr, "BFD: "); - VA_OPEN (p, s); - VA_FIXEDARG (p, const char *, s); - vfprintf (stderr, s, p); - VA_CLOSE (p); + 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; + } - fprintf (stderr, "\n"); + 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 == NULL) + /* Invoking %B with a null bfd pointer is an internal error. */ + abort (); + else 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; + const char *group = NULL; + struct coff_comdat_info *ci; + + if (sec == NULL) + /* Invoking %A with a null section pointer is an internal error. */ + abort (); + abfd = sec->owner; + 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); + fflush (stderr); } /* This is a function pointer to the routine which should handle BFD @@ -458,8 +749,7 @@ DESCRIPTION */ bfd_error_handler_type -bfd_set_error_handler (pnew) - bfd_error_handler_type pnew; +bfd_set_error_handler (bfd_error_handler_type pnew) { bfd_error_handler_type pold; @@ -483,8 +773,7 @@ DESCRIPTION */ void -bfd_set_error_program_name (name) - const char *name; +bfd_set_error_program_name (const char *name) { _bfd_error_program_name = name; } @@ -501,62 +790,17 @@ DESCRIPTION */ bfd_error_handler_type -bfd_get_error_handler () +bfd_get_error_handler (void) { return _bfd_error_handler; } - -/* -FUNCTION - bfd_archive_filename - -SYNOPSIS - const char *bfd_archive_filename (bfd *); - -DESCRIPTION - For a BFD that is a component of an archive, returns a string - with both the archive name and file name. For other BFDs, just - returns the file name. -*/ - -const char * -bfd_archive_filename (abfd) - bfd *abfd; -{ - if (abfd->my_archive) - { - static size_t curr = 0; - static char *buf; - size_t needed; - - needed = (strlen (bfd_get_filename (abfd->my_archive)) - + strlen (bfd_get_filename (abfd)) + 3); - if (needed > curr) - { - if (curr) - free (buf); - curr = needed + (needed >> 1); - buf = bfd_malloc ((bfd_size_type) curr); - /* If we can't malloc, fail safe by returning just the file - name. This function is only used when building error - messages. */ - if (!buf) - { - curr = 0; - return bfd_get_filename (abfd); - } - } - sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive), - bfd_get_filename (abfd)); - return buf; - } - else - return bfd_get_filename (abfd); -} /* SECTION - Symbols + Miscellaneous + +SUBSECTION + Miscellaneous functions */ /* @@ -564,7 +808,7 @@ FUNCTION bfd_get_reloc_upper_bound SYNOPSIS - long bfd_get_reloc_upper_bound(bfd *abfd, asection *sect); + long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect); DESCRIPTION Return the number of bytes required to store the @@ -574,9 +818,7 @@ DESCRIPTION */ long -bfd_get_reloc_upper_bound (abfd, asect) - bfd *abfd; - sec_ptr asect; +bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) { if (abfd->format != bfd_object) { @@ -593,10 +835,7 @@ FUNCTION SYNOPSIS long bfd_canonicalize_reloc - (bfd *abfd, - asection *sec, - arelent **loc, - asymbol **syms); + (bfd *abfd, asection *sec, arelent **loc, asymbol **syms); DESCRIPTION Call the back end associated with the open BFD @@ -612,11 +851,10 @@ DESCRIPTION */ long -bfd_canonicalize_reloc (abfd, asect, location, symbols) - bfd *abfd; - sec_ptr asect; - arelent **location; - asymbol **symbols; +bfd_canonicalize_reloc (bfd *abfd, + sec_ptr asect, + arelent **location, + asymbol **symbols) { if (abfd->format != bfd_object) { @@ -644,11 +882,10 @@ DESCRIPTION */ void -bfd_set_reloc (ignore_abfd, asect, location, count) - bfd *ignore_abfd ATTRIBUTE_UNUSED; - sec_ptr asect; - arelent **location; - unsigned int count; +bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, + sec_ptr asect, + arelent **location, + unsigned int count) { asect->orelocation = location; asect->reloc_count = count; @@ -659,7 +896,7 @@ FUNCTION bfd_set_file_flags SYNOPSIS - boolean bfd_set_file_flags(bfd *abfd, flagword flags); + 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}. @@ -674,37 +911,33 @@ DESCRIPTION */ -boolean -bfd_set_file_flags (abfd, flags) - bfd *abfd; - flagword flags; +bfd_boolean +bfd_set_file_flags (bfd *abfd, flagword flags) { if (abfd->format != bfd_object) { bfd_set_error (bfd_error_wrong_format); - return false; + return FALSE; } if (bfd_read_p (abfd)) { bfd_set_error (bfd_error_invalid_operation); - return false; + 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 FALSE; } - return true; + return TRUE; } void -bfd_assert (file, line) - const char *file; - int line; +bfd_assert (const char *file, int line) { (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"), BFD_VERSION_STRING, file, line); @@ -713,15 +946,8 @@ bfd_assert (file, line) /* A more or less friendly abort message. In libbfd.h abort is defined to call this function. */ -#ifndef EXIT_FAILURE -#define EXIT_FAILURE 1 -#endif - void -_bfd_abort (file, line, fn) - const char *file; - int line; - const char *fn; +_bfd_abort (const char *file, int line, const char *fn) { if (fn != NULL) (*_bfd_error_handler) @@ -732,7 +958,7 @@ _bfd_abort (file, line, fn) (_("BFD %s internal error, aborting at %s line %d\n"), BFD_VERSION_STRING, file, line); (*_bfd_error_handler) (_("Please report this bug.\n")); - xexit (EXIT_FAILURE); + _exit (EXIT_FAILURE); } /* @@ -752,11 +978,10 @@ RETURNS */ int -bfd_get_arch_size (abfd) - bfd *abfd; +bfd_get_arch_size (bfd *abfd) { if (abfd->xvec->flavour == bfd_target_elf_flavour) - return (get_elf_backend_data (abfd))->s->arch_size; + return get_elf_backend_data (abfd)->s->arch_size; return -1; } @@ -783,24 +1008,32 @@ RETURNS */ int -bfd_get_sign_extend_vma (abfd) - bfd *abfd; +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); + return get_elf_backend_data (abfd)->sign_extend_vma; name = bfd_get_target (abfd); - /* Return a proper value for DJGPP COFF (an x86 COFF variant). + /* Return a proper value for DJGPP & PE COFF. 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) + if (CONST_STRNEQ (name, "coff-go32") + || strcmp (name, "pe-i386") == 0 + || strcmp (name, "pei-i386") == 0 + || strcmp (name, "pe-x86-64") == 0 + || strcmp (name, "pei-x86-64") == 0 + || strcmp (name, "pe-arm-wince-little") == 0 + || strcmp (name, "pei-arm-wince-little") == 0) return 1; + if (CONST_STRNEQ (name, "mach-o")) + return 0; + bfd_set_error (bfd_error_wrong_format); return -1; } @@ -810,103 +1043,20 @@ FUNCTION bfd_set_start_address SYNOPSIS - boolean bfd_set_start_address(bfd *abfd, bfd_vma vma); + 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 <> on success, <> otherwise. + Returns <> on success, <> otherwise. */ -boolean -bfd_set_start_address (abfd, vma) - bfd *abfd; - bfd_vma vma; +bfd_boolean +bfd_set_start_address (bfd *abfd, bfd_vma vma) { abfd->start_address = vma; - return true; -} - -/* -FUNCTION - bfd_get_mtime - -SYNOPSIS - long bfd_get_mtime(bfd *abfd); - -DESCRIPTION - Return the file modification time (as read from the file system, or - from the archive header for archive members). - -*/ - -long -bfd_get_mtime (abfd) - bfd *abfd; -{ - FILE *fp; - struct stat buf; - - if (abfd->mtime_set) - return abfd->mtime; - - fp = bfd_cache_lookup (abfd); - if (0 != fstat (fileno (fp), &buf)) - return 0; - - abfd->mtime = buf.st_mtime; /* Save value in case anyone wants it */ - return buf.st_mtime; -} - -/* -FUNCTION - bfd_get_size - -SYNOPSIS - long bfd_get_size(bfd *abfd); - -DESCRIPTION - Return the file size (as read from file system) for the file - associated with BFD @var{abfd}. - - The initial motivation for, and use of, this routine is not - so we can get the exact size of the object the BFD applies to, since - that might not be generally possible (archive members for example). - It would be ideal if someone could eventually modify - it so that such results were guaranteed. - - Instead, we want to ask questions like "is this NNN byte sized - object I'm about to try read from file offset YYY reasonable?" - As as example of where we might do this, some object formats - use string tables for which the first <> bytes of the - table contain the size of the table itself, including the size bytes. - If an application tries to read what it thinks is one of these - string tables, without some way to validate the size, and for - some reason the size is wrong (byte swapping error, wrong location - for the string table, etc.), the only clue is likely to be a read - error when it tries to read the table, or a "virtual memory - exhausted" error when it tries to allocate 15 bazillon bytes - of space for the 15 bazillon byte table it is about to read. - This function at least allows us to answer the quesion, "is the - size reasonable?". -*/ - -long -bfd_get_size (abfd) - bfd *abfd; -{ - FILE *fp; - struct stat buf; - - if ((abfd->flags & BFD_IN_MEMORY) != 0) - return ((struct bfd_in_memory *) abfd->iostream)->size; - - fp = bfd_cache_lookup (abfd); - if (0 != fstat (fileno (fp), & buf)) - return 0; - - return buf.st_size; + return TRUE; } /* @@ -914,7 +1064,7 @@ FUNCTION bfd_get_gp_size SYNOPSIS - unsigned int bfd_get_gp_size(bfd *abfd); + unsigned int bfd_get_gp_size (bfd *abfd); DESCRIPTION Return the maximum size of objects to be optimized using the GP @@ -923,8 +1073,7 @@ DESCRIPTION */ unsigned int -bfd_get_gp_size (abfd) - bfd *abfd; +bfd_get_gp_size (bfd *abfd) { if (abfd->format == bfd_object) { @@ -941,7 +1090,7 @@ FUNCTION bfd_set_gp_size SYNOPSIS - void bfd_set_gp_size(bfd *abfd, unsigned int i); + void bfd_set_gp_size (bfd *abfd, unsigned int i); DESCRIPTION Set the maximum size of objects to be optimized using the GP @@ -950,9 +1099,7 @@ DESCRIPTION */ void -bfd_set_gp_size (abfd, i) - bfd *abfd; - unsigned int i; +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) @@ -969,9 +1116,10 @@ bfd_set_gp_size (abfd, i) register. */ bfd_vma -_bfd_get_gp_value (abfd) - bfd *abfd; +_bfd_get_gp_value (bfd *abfd) { + if (! abfd) + return 0; if (abfd->format != bfd_object) return 0; @@ -986,10 +1134,10 @@ _bfd_get_gp_value (abfd) /* Set the GP value. */ void -_bfd_set_gp_value (abfd, v) - bfd *abfd; - bfd_vma v; +_bfd_set_gp_value (bfd *abfd, bfd_vma v) { + if (! abfd) + abort (); if (abfd->format != bfd_object) return; @@ -1004,7 +1152,7 @@ FUNCTION bfd_scan_vma SYNOPSIS - bfd_vma bfd_scan_vma(const char *string, const char **end, int base); + bfd_vma bfd_scan_vma (const char *string, const char **end, int base); DESCRIPTION Convert, like <>, a numerical expression @@ -1021,10 +1169,7 @@ DESCRIPTION */ bfd_vma -bfd_scan_vma (string, end, base) - const char *string; - const char **end; - int base; +bfd_scan_vma (const char *string, const char **end, int base) { bfd_vma value; bfd_vma cutoff; @@ -1033,7 +1178,12 @@ bfd_scan_vma (string, end, base) /* Let the host do it if possible. */ if (sizeof (bfd_vma) <= sizeof (unsigned long)) - return (bfd_vma) strtoul (string, (char **) end, base); + 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) { @@ -1089,16 +1239,39 @@ bfd_scan_vma (string, end, base) 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 + <> on success, <> on error. + Possible error returns are: + + o <> - + 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 - boolean bfd_copy_private_bfd_data(bfd *ibfd, bfd *obfd); + 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 <> on success, <> on error. + the BFD @var{obfd}. Return <> on success, <> on error. Possible error returns are: o <> - @@ -1115,12 +1288,12 @@ FUNCTION bfd_merge_private_bfd_data SYNOPSIS - boolean bfd_merge_private_bfd_data(bfd *ibfd, bfd *obfd); + 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 <> - on success, <> on error. Possible error returns are: + the output file BFD @var{obfd} when linking. Return <> + on success, <> on error. Possible error returns are: o <> - Not enough memory exists to create private data for @var{obfd}. @@ -1136,54 +1309,60 @@ FUNCTION bfd_set_private_flags SYNOPSIS - boolean bfd_set_private_flags(bfd *abfd, flagword flags); + bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags); DESCRIPTION Set private BFD flag information in the BFD @var{abfd}. - Return <> on success, <> on error. Possible error + Return <> on success, <> on error. Possible error returns are: o <> - 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)) +. BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags)) */ /* FUNCTION - stuff + Other functions DESCRIPTION - Stuff which should be documented: + 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_sizeof_headers(abfd, info) \ +. BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info)) . .#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)) +. 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)) . -. {* Do these three do anything useful at all, for any back end? *} .#define bfd_debug_info_start(abfd) \ -. BFD_SEND (abfd, _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)) +. BFD_SEND (abfd, _bfd_debug_info_end, (abfd)) . .#define bfd_debug_info_accumulate(abfd, section) \ -. BFD_SEND (abfd, _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)) +. BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat)) . .#define bfd_update_armap_timestamp(abfd) \ -. BFD_SEND (abfd, _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)) +. 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)) @@ -1194,6 +1373,9 @@ DESCRIPTION .#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)) . @@ -1206,7 +1388,7 @@ DESCRIPTION .#define bfd_link_add_symbols(abfd, info) \ . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info)) . -.#define bfd_link_just_syms(sec, info) \ +.#define bfd_link_just_syms(abfd, sec, info) \ . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info)) . .#define bfd_final_link(abfd, info) \ @@ -1224,6 +1406,10 @@ DESCRIPTION .#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)) . @@ -1231,27 +1417,23 @@ DESCRIPTION . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms)) . .extern bfd_byte *bfd_get_relocated_section_contents -. PARAMS ((bfd *, struct bfd_link_info *, -. struct bfd_link_order *, bfd_byte *, -. boolean, asymbol **)); +. (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, +. bfd_boolean, asymbol **); . */ bfd_byte * -bfd_get_relocated_section_contents (abfd, link_info, link_order, data, - relocateable, symbols) - bfd *abfd; - struct bfd_link_info *link_info; - struct bfd_link_order *link_order; - bfd_byte *data; - boolean relocateable; - asymbol **symbols; +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) PARAMS ((bfd *, struct bfd_link_info *, - struct bfd_link_order *, bfd_byte *, boolean, - asymbol **)); + 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) { @@ -1264,45 +1446,42 @@ bfd_get_relocated_section_contents (abfd, link_info, link_order, data, fn = abfd2->xvec->_bfd_get_relocated_section_contents; - return (*fn) (abfd, link_info, link_order, data, relocateable, symbols); + return (*fn) (abfd, link_info, link_order, data, relocatable, symbols); } /* Record information about an ELF program header. */ -boolean -bfd_record_phdr (abfd, type, flags_valid, flags, at_valid, at, - includes_filehdr, includes_phdrs, count, secs) - bfd *abfd; - unsigned long type; - boolean flags_valid; - flagword flags; - boolean at_valid; - bfd_vma at; - boolean includes_filehdr; - boolean includes_phdrs; - unsigned int count; - asection **secs; +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; + return TRUE; amt = sizeof (struct elf_segment_map); amt += ((bfd_size_type) count - 1) * sizeof (asection *); - m = (struct elf_segment_map *) bfd_alloc (abfd, amt); + m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); if (m == NULL) - return false; + return FALSE; - m->next = NULL; m->p_type = type; m->p_flags = flags; m->p_paddr = at; - m->p_flags_valid = (unsigned int) flags_valid; - m->p_paddr_valid = (unsigned int) at_valid; - m->includes_filehdr = (unsigned int) includes_filehdr; - m->includes_phdrs = (unsigned int) includes_phdrs; + 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 *)); @@ -1311,31 +1490,53 @@ bfd_record_phdr (abfd, type, flags_valid, flags, at_valid, at, ; *pm = m; - return true; + return TRUE; } -void -bfd_sprintf_vma (abfd, buf, value) - bfd *abfd; - char *buf; - bfd_vma value; +#ifdef BFD64 +/* Return true iff this target is 32-bit. */ + +static bfd_boolean +is32bit (bfd *abfd) { 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); + { + const struct elf_backend_data *bed = get_elf_backend_data (abfd); + return bed->s->elfclass == ELFCLASS32; + } + + /* For non-ELF targets, use architecture information. */ + return bfd_arch_bits_per_address (abfd) <= 32; } +#endif + +/* bfd_sprintf_vma and bfd_fprintf_vma display an address in the + target's address size. */ void -bfd_fprintf_vma (abfd, stream, value) - bfd *abfd; - PTR stream; - bfd_vma value; +bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, 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); +#ifdef BFD64 + if (is32bit (abfd)) + { + sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff); + return; + } +#endif + sprintf_vma (buf, value); +} + +void +bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) +{ +#ifdef BFD64 + if (is32bit (abfd)) + { + fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff); + return; + } +#endif + fprintf_vma ((FILE *) stream, value); } /* @@ -1343,7 +1544,7 @@ FUNCTION bfd_alt_mach_code SYNOPSIS - boolean bfd_alt_mach_code(bfd *abfd, int alternative); + bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative); DESCRIPTION @@ -1354,10 +1555,8 @@ DESCRIPTION machine codes. */ -boolean -bfd_alt_mach_code (abfd, alternative) - bfd *abfd; - int alternative; +bfd_boolean +bfd_alt_mach_code (bfd *abfd, int alternative) { if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) { @@ -1372,23 +1571,364 @@ bfd_alt_mach_code (abfd, alternative) case 1: code = get_elf_backend_data (abfd)->elf_machine_alt1; if (code == 0) - return false; + return FALSE; break; case 2: code = get_elf_backend_data (abfd)->elf_machine_alt2; if (code == 0) - return false; + return FALSE; break; default: - return false; + return FALSE; } elf_elfheader (abfd)->e_machine = code; - return true; + 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_FLAGS_SAVED; + 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); +} + +/* +FUNCTION + bfd_emul_get_maxpagesize + +SYNOPSIS + bfd_vma bfd_emul_get_maxpagesize (const char *); + +DESCRIPTION + Returns the maximum page size, in bytes, as determined by + emulation. + +RETURNS + Returns the maximum page size in bytes for ELF, 0 otherwise. +*/ + +bfd_vma +bfd_emul_get_maxpagesize (const char *emul) +{ + const bfd_target *target; + + target = bfd_find_target (emul, NULL); + if (target != NULL + && target->flavour == bfd_target_elf_flavour) + return xvec_get_elf_backend_data (target)->maxpagesize; + + return 0; +} + +static void +bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size, + int offset, const bfd_target *orig_target) +{ + if (target->flavour == bfd_target_elf_flavour) + { + const struct elf_backend_data *bed; + + bed = xvec_get_elf_backend_data (target); + *((bfd_vma *) ((char *) bed + offset)) = size; + } + + if (target->alternative_target + && target->alternative_target != orig_target) + bfd_elf_set_pagesize (target->alternative_target, size, offset, + orig_target); +} + +/* +FUNCTION + bfd_emul_set_maxpagesize + +SYNOPSIS + void bfd_emul_set_maxpagesize (const char *, bfd_vma); + +DESCRIPTION + For ELF, set the maximum page size for the emulation. It is + a no-op for other formats. + +*/ + +void +bfd_emul_set_maxpagesize (const char *emul, bfd_vma size) +{ + const bfd_target *target; + + target = bfd_find_target (emul, NULL); + if (target) + bfd_elf_set_pagesize (target, size, + offsetof (struct elf_backend_data, + maxpagesize), target); +} + +/* +FUNCTION + bfd_emul_get_commonpagesize + +SYNOPSIS + bfd_vma bfd_emul_get_commonpagesize (const char *); + +DESCRIPTION + Returns the common page size, in bytes, as determined by + emulation. + +RETURNS + Returns the common page size in bytes for ELF, 0 otherwise. +*/ + +bfd_vma +bfd_emul_get_commonpagesize (const char *emul) +{ + const bfd_target *target; + + target = bfd_find_target (emul, NULL); + if (target != NULL + && target->flavour == bfd_target_elf_flavour) + return xvec_get_elf_backend_data (target)->commonpagesize; + + return 0; +} + +/* +FUNCTION + bfd_emul_set_commonpagesize + +SYNOPSIS + void bfd_emul_set_commonpagesize (const char *, bfd_vma); + +DESCRIPTION + For ELF, set the common page size for the emulation. It is + a no-op for other formats. + +*/ + +void +bfd_emul_set_commonpagesize (const char *emul, bfd_vma size) +{ + const bfd_target *target; + + target = bfd_find_target (emul, NULL); + if (target) + bfd_elf_set_pagesize (target, size, + offsetof (struct elf_backend_data, + commonpagesize), target); +} + +/* +FUNCTION + bfd_demangle + +SYNOPSIS + char *bfd_demangle (bfd *, const char *, int); + +DESCRIPTION + Wrapper around cplus_demangle. Strips leading underscores and + other such chars that would otherwise confuse the demangler. + If passed a g++ v3 ABI mangled name, returns a buffer allocated + with malloc holding the demangled name. Returns NULL otherwise + and on memory alloc failure. +*/ + +char * +bfd_demangle (bfd *abfd, const char *name, int options) +{ + char *res, *alloc; + const char *pre, *suf; + size_t pre_len; + bfd_boolean skip_lead; + + skip_lead = (abfd != NULL + && *name != '\0' + && bfd_get_symbol_leading_char (abfd) == *name); + if (skip_lead) + ++name; + + /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF + or the MS PE format. These formats have a number of leading '.'s + on at least some symbols, so we remove all dots to avoid + confusing the demangler. */ + pre = name; + while (*name == '.' || *name == '$') + ++name; + pre_len = name - pre; + + /* Strip off @plt and suchlike too. */ + alloc = NULL; + suf = strchr (name, '@'); + if (suf != NULL) + { + alloc = (char *) bfd_malloc (suf - name + 1); + if (alloc == NULL) + return NULL; + memcpy (alloc, name, suf - name); + alloc[suf - name] = '\0'; + name = alloc; + } + + res = cplus_demangle (name, options); + + if (alloc != NULL) + free (alloc); + + if (res == NULL) + { + if (skip_lead) + { + size_t len = strlen (pre) + 1; + alloc = (char *) bfd_malloc (len); + if (alloc == NULL) + return NULL; + memcpy (alloc, pre, len); + return alloc; + } + return NULL; + } + + /* Put back any prefix or suffix. */ + if (pre_len != 0 || suf != NULL) + { + size_t len; + size_t suf_len; + char *final; + + len = strlen (res); + if (suf == NULL) + suf = res + len; + suf_len = strlen (suf) + 1; + final = (char *) bfd_malloc (pre_len + len + suf_len); + if (final != NULL) + { + memcpy (final, pre, pre_len); + memcpy (final + pre_len, res, len); + memcpy (final + pre_len + len, suf, suf_len); + } + free (res); + res = final; } - return false; + return res; }