X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldmisc.c;h=465992157816ca850077fe9d597b254a93e374f6;hb=b80c3053162ec5533e120ee4e4ed30296d4c5fb2;hp=60df285d52eb6686a79b939727a64ff4116d53b5;hpb=2a28d8b006b3e2a9fae710219ded826abaefa587;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldmisc.c b/ld/ldmisc.c index 60df285d52..4659921578 100644 --- a/ld/ldmisc.c +++ b/ld/ldmisc.c @@ -1,475 +1,544 @@ /* ldmisc.c - Copyright (C) 1991 Free Software Foundation, Inc. - + Copyright (C) 1991-2015 Free Software Foundation, Inc. Written by Steve Chamberlain of Cygnus Support. -This file is part of GLD, the Gnu Linker. + This file is part of the GNU Binutils. -GLD 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, or (at your option) -any later version. + 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 3 of the License, or + (at your option) any later version. -GLD 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. + 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 GLD; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -#include "bfd.h" #include "sysdep.h" -#include -#include - +#include "bfd.h" +#include "bfdlink.h" +#include "libiberty.h" +#include "filenames.h" +#include "demangle.h" +#include #include "ld.h" #include "ldmisc.h" +#include "ldexp.h" #include "ldlang.h" +#include #include "ldlex.h" -/* IMPORTS */ - -extern char *program_name; - -extern FILE *ldlex_input_stack; -extern char *ldfile_input_filename; -extern ld_config_type config; - - -extern int errno; -extern int sys_nerr; -extern char *sys_errlist[]; - -/* VARARGS*/ -static void finfo (); +#include "ldmain.h" +#include "ldfile.h" +#include "elf-bfd.h" +#include "coff-bfd.h" /* - %F error is fatal - %P print progam name - %S print script file and linenumber + %% literal % + %A section name from a section + %B filename from a bfd + %C clever filename:linenumber with function + %D like %C, but no function name %E current bfd error or errno + %F error is fatal + %G like %D, but only function name + %H like %C but in addition emit section+offset %I filename from a lang_input_statement_type - %B filename from a bfd - %T symbol table entry - %X no object output, fail return + %P print program name + %R info about a relent + %S print script file and linenumber from etree_type. + %T symbol name %V hex bfd_vma + %W hex bfd_vma with 0x with no leading zeros taking up 8 spaces + %X no object output, fail return + %d integer, like printf + %ld long, like printf + %lu unsigned long, like printf + %p native (host) void* pointer, like printf + %s arbitrary string, like printf + %u integer, like printf %v hex bfd_vma, no leading zeros - %C Clever filename:linenumber - %R info about a relent - % */ -extern bfd *output_bfd; -static char * -demangle(string, remove_underscore) -char *string; -int remove_underscore; -{ - char *res; - if (remove_underscore && output_bfd) - { - if (bfd_get_symbol_leading_char(output_bfd) == string[0]) - string++; - } - /* Note that there's a memory leak here, we keep buying memory - for demangled names, and never free. But if you have so many - errors that you run out of VM with the error messages, then - there's something up */ - res = cplus_demangle(string, DMGL_ANSI|DMGL_PARAMS); - return res ? res : string; -} - -static void -vfinfo(fp, fmt, arg) - FILE *fp; - char *fmt; - va_list arg; +void +vfinfo (FILE *fp, const char *fmt, va_list arg, bfd_boolean is_warning) { - boolean fatal = false; + bfd_boolean fatal = FALSE; - while (*fmt) - { - while (*fmt != '%' && *fmt != '\0') + while (*fmt != '\0') { - putc(*fmt, fp); - fmt++; - } - - if (*fmt == '%') - { - fmt ++; - switch (*fmt++) - { - case 'X': - config.make_executable = false; - break; - - case 'V': - { - bfd_vma value = va_arg(arg, bfd_vma); - fprintf_vma(fp, value); - } - break; - - case 'v': + const char *str = fmt; + while (*fmt != '%' && *fmt != '\0') + fmt++; + if (fmt != str) + if (fwrite (str, 1, fmt - str, fp)) + { + /* Ignore. */ + } + + if (*fmt == '%') { - char buf[100]; - char *p = buf; - bfd_vma value = va_arg (arg, bfd_vma); - sprintf_vma (p, value); - while (*p == '0') - p++; - if (!*p) - p--; - fputs (p, fp); + fmt++; + switch (*fmt++) + { + case '%': + /* literal % */ + putc ('%', fp); + break; + + case 'X': + /* no object output, fail return */ + config.make_executable = FALSE; + break; + + case 'V': + /* hex bfd_vma */ + { + bfd_vma value = va_arg (arg, bfd_vma); + fprintf_vma (fp, value); + } + break; + + case 'v': + /* hex bfd_vma, no leading zeros */ + { + char buf[100]; + char *p = buf; + bfd_vma value = va_arg (arg, bfd_vma); + sprintf_vma (p, value); + while (*p == '0') + p++; + if (!*p) + p--; + fputs (p, fp); + } + break; + + case 'W': + /* hex bfd_vma with 0x with no leading zeroes taking up + 8 spaces. */ + { + char buf[100]; + bfd_vma value; + char *p; + int len; + + value = va_arg (arg, bfd_vma); + sprintf_vma (buf, value); + for (p = buf; *p == '0'; ++p) + ; + if (*p == '\0') + --p; + len = strlen (p); + while (len < 8) + { + putc (' ', fp); + ++len; + } + fprintf (fp, "0x%s", p); + } + break; + + case 'T': + /* Symbol name. */ + { + const char *name = va_arg (arg, const char *); + + if (name == NULL || *name == 0) + { + fprintf (fp, _("no symbol")); + break; + } + else if (demangling) + { + char *demangled; + + demangled = bfd_demangle (link_info.output_bfd, name, + DMGL_ANSI | DMGL_PARAMS); + if (demangled != NULL) + { + fprintf (fp, "%s", demangled); + free (demangled); + break; + } + } + fprintf (fp, "%s", name); + } + break; + + case 'A': + /* section name from a section */ + { + asection *sec = va_arg (arg, asection *); + bfd *abfd = sec->owner; + const char *group = NULL; + struct coff_comdat_info *ci; + + fprintf (fp, "%s", sec->name); + 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) + fprintf (fp, "[%s]", group); + } + break; + + case 'B': + /* filename from a bfd */ + { + bfd *abfd = va_arg (arg, bfd *); + + if (abfd == NULL) + fprintf (fp, "%s generated", program_name); + else if (abfd->my_archive) + fprintf (fp, "%s(%s)", abfd->my_archive->filename, + abfd->filename); + else + fprintf (fp, "%s", abfd->filename); + } + break; + + case 'F': + /* Error is fatal. */ + fatal = TRUE; + break; + + case 'P': + /* Print program name. */ + fprintf (fp, "%s", program_name); + break; + + case 'E': + /* current bfd error or errno */ + fprintf (fp, "%s", bfd_errmsg (bfd_get_error ())); + break; + + case 'I': + /* filename from a lang_input_statement_type */ + { + lang_input_statement_type *i; + + i = va_arg (arg, lang_input_statement_type *); + if (bfd_my_archive (i->the_bfd) != NULL) + fprintf (fp, "(%s)", + bfd_get_filename (bfd_my_archive (i->the_bfd))); + fprintf (fp, "%s", i->local_sym_name); + if (bfd_my_archive (i->the_bfd) == NULL + && filename_cmp (i->local_sym_name, i->filename) != 0) + fprintf (fp, " (%s)", i->filename); + } + break; + + case 'S': + /* Print script file and linenumber. */ + { + etree_type node; + etree_type *tp = va_arg (arg, etree_type *); + + if (tp == NULL) + { + tp = &node; + tp->type.filename = ldlex_filename (); + tp->type.lineno = lineno; + } + if (tp->type.filename != NULL) + fprintf (fp, "%s:%u", tp->type.filename, tp->type.lineno); + } + break; + + case 'R': + /* Print all that's interesting about a relent. */ + { + arelent *relent = va_arg (arg, arelent *); + + lfinfo (fp, "%s+0x%v (type %s)", + (*(relent->sym_ptr_ptr))->name, + relent->addend, + relent->howto->name); + } + break; + + case 'C': + case 'D': + case 'G': + case 'H': + /* Clever filename:linenumber with function name if possible. + The arguments are a BFD, a section, and an offset. */ + { + static bfd *last_bfd; + static char *last_file = NULL; + static char *last_function = NULL; + bfd *abfd; + asection *section; + bfd_vma offset; + asymbol **asymbols = NULL; + const char *filename; + const char *functionname; + unsigned int linenumber; + bfd_boolean discard_last; + bfd_boolean done; + + abfd = va_arg (arg, bfd *); + section = va_arg (arg, asection *); + offset = va_arg (arg, bfd_vma); + + if (abfd != NULL) + { + if (!bfd_generic_link_read_symbols (abfd)) + einfo (_("%B%F: could not read symbols: %E\n"), abfd); + + asymbols = bfd_get_outsymbols (abfd); + } + + /* The GNU Coding Standard requires that error messages + be of the form: + + source-file-name:lineno: message + + We do not always have a line number available so if + we cannot find them we print out the section name and + offset instead. */ + discard_last = TRUE; + if (abfd != NULL + && bfd_find_nearest_line (abfd, section, asymbols, offset, + &filename, &functionname, + &linenumber)) + { + if (functionname != NULL + && (fmt[-1] == 'C' || fmt[-1] == 'H')) + { + /* Detect the case where we are printing out a + message for the same function as the last + call to vinfo ("%C"). In this situation do + not print out the ABFD filename or the + function name again. Note - we do still + print out the source filename, as this will + allow programs that parse the linker's output + (eg emacs) to correctly locate multiple + errors in the same source file. */ + if (last_bfd == NULL + || last_file == NULL + || last_function == NULL + || last_bfd != abfd + || (filename != NULL + && filename_cmp (last_file, filename) != 0) + || strcmp (last_function, functionname) != 0) + { + lfinfo (fp, _("%B: In function `%T':\n"), + abfd, functionname); + + last_bfd = abfd; + if (last_file != NULL) + free (last_file); + last_file = NULL; + if (filename) + last_file = xstrdup (filename); + if (last_function != NULL) + free (last_function); + last_function = xstrdup (functionname); + } + discard_last = FALSE; + } + else + lfinfo (fp, "%B:", abfd); + + if (filename != NULL) + fprintf (fp, "%s:", filename); + + done = fmt[-1] != 'H'; + if (functionname != NULL && fmt[-1] == 'G') + lfinfo (fp, "%T", functionname); + else if (filename != NULL && linenumber != 0) + fprintf (fp, "%u%s", linenumber, done ? "" : ":"); + else + done = FALSE; + } + else + { + lfinfo (fp, "%B:", abfd); + done = FALSE; + } + if (!done) + lfinfo (fp, "(%A+0x%v)", section, offset); + + if (discard_last) + { + last_bfd = NULL; + if (last_file != NULL) + { + free (last_file); + last_file = NULL; + } + if (last_function != NULL) + { + free (last_function); + last_function = NULL; + } + } + } + break; + + case 'p': + /* native (host) void* pointer, like printf */ + fprintf (fp, "%p", va_arg (arg, void *)); + break; + + case 's': + /* arbitrary string, like printf */ + fprintf (fp, "%s", va_arg (arg, char *)); + break; + + case 'd': + /* integer, like printf */ + fprintf (fp, "%d", va_arg (arg, int)); + break; + + case 'u': + /* unsigned integer, like printf */ + fprintf (fp, "%u", va_arg (arg, unsigned int)); + break; + + case 'l': + if (*fmt == 'd') + { + fprintf (fp, "%ld", va_arg (arg, long)); + ++fmt; + break; + } + else if (*fmt == 'u') + { + fprintf (fp, "%lu", va_arg (arg, unsigned long)); + ++fmt; + break; + } + /* Fall thru */ + + default: + fprintf (fp, "%%%c", fmt[-1]); + break; + } } - break; - - case 'T': - { - asymbol *symbol = va_arg(arg, asymbol *); - if (symbol) - { - asection *section = symbol->section; - char *cplusname = demangle(symbol->name, 1); - CONST char *section_name = section->name; - if (section != &bfd_und_section) - { - fprintf(fp,"%s (%s)", cplusname, section_name); - } - else - { - fprintf(fp,"%s", cplusname); - } - } - else - { - fprintf(fp,"no symbol"); - } - } - break; - - case 'B': - { - bfd *abfd = va_arg(arg, bfd *); - if (abfd->my_archive) { - fprintf(fp,"%s(%s)", abfd->my_archive->filename, - abfd->filename); - } - else { - fprintf(fp,"%s", abfd->filename); - } - } - break; - - case 'F': - fatal = true; - break; - - case 'P': - fprintf(fp,"%s", program_name); - break; - - case 'E': - /* Replace with the most recent errno explanation */ - fprintf(fp, bfd_errmsg(bfd_error)); - break; - - case 'I': - { - lang_input_statement_type *i = - va_arg(arg,lang_input_statement_type *); - - fprintf(fp,"%s", i->local_sym_name); - } - break; - - case 'S': - /* Print source script file and line number */ - { - extern unsigned int lineno; - if (ldfile_input_filename == (char *)NULL) { - fprintf(fp,"command line"); - } - else { - fprintf(fp,"%s:%u", ldfile_input_filename, lineno ); - } - } - break; - - case 'R': - /* Print all that's interesting about a relent */ - { - arelent *relent = va_arg(arg, arelent *); - - finfo (fp, "%s+0x%v (type %s)", - (*(relent->sym_ptr_ptr))->name, - relent->addend, - relent->howto->name); - } - break; - - case 'C': - { - CONST char *filename; - CONST char *functionname; - char *cplus_name; - - unsigned int linenumber; - bfd *abfd = va_arg(arg, bfd *); - asection *section = va_arg(arg, asection *); - asymbol **symbols = va_arg(arg, asymbol **); - bfd_vma offset = va_arg(arg, bfd_vma); - - if (bfd_find_nearest_line(abfd, - section, - symbols, - offset, - &filename, - &functionname, - &linenumber)) - { - if (filename == (char *)NULL) - filename = abfd->filename; - if (functionname != (char *)NULL) - { - cplus_name = demangle(functionname, 1); - fprintf(fp,"%s:%u: (%s)", filename, linenumber, cplus_name); - } - - else if (linenumber != 0) - fprintf(fp,"%s:%u", filename, linenumber); - else - finfo (fp, "%s(%s+0x%v)", filename, section->name, offset); - - } - else - finfo (fp, "%s(%s+0x%v)", abfd->filename, section->name, offset); - } - break; - - case 's': - fprintf(fp,"%s", va_arg(arg, char *)); - break; - - case 'd': - fprintf(fp,"%d", va_arg(arg, int)); - break; - - default: - fprintf(fp,"%s", va_arg(arg, char *)); - break; - } } - } - - if (fatal == true) - { - extern char *output_filename; - if (output_filename) - { - char *new = malloc(strlen(output_filename)+2); - extern bfd *output_bfd; - - strcpy(new, output_filename); - if (output_bfd && output_bfd->iostream) - fclose((FILE *)(output_bfd->iostream)); - unlink(new); - } - exit(1); - } -} -/* Format info message and print on stdout. */ + if (is_warning && config.fatal_warnings) + config.make_executable = FALSE; -void info(va_alist) -va_dcl -{ - char *fmt; - va_list arg; - va_start(arg); - fmt = va_arg(arg, char *); - vfinfo(stdout, fmt, arg); - va_end(arg); + if (fatal) + xexit (1); } -/* ('e' for error.) Format info message and print on stderr. */ +/* Format info message and print on stdout. */ + +/* (You would think this should be called just "info", but then you + would be hosed by LynxOS, which defines that name in its libc.) */ -void einfo(va_alist) -va_dcl +void +info_msg (const char *fmt, ...) { - char *fmt; va_list arg; - va_start(arg); - fmt = va_arg(arg, char *); - vfinfo(stderr, fmt, arg); - va_end(arg); + + va_start (arg, fmt); + vfinfo (stdout, fmt, arg, FALSE); + va_end (arg); } -/* Warn about a symbol NEWSYM being multiply defined with another symbol OLDSYM. - MESSAGE1 and MESSAGE2 should look something like: - "%C: warning: multiple commons of `%s'\n" - "%C: warning: previous common here\n" */ +/* ('e' for error.) Format info message and print on stderr. */ void -multiple_warn (message1, newsym, message2, oldsym) - char *message1; - asymbol *newsym; - char *message2; - asymbol *oldsym; +einfo (const char *fmt, ...) { - lang_input_statement_type *stat; - asymbol **stat_symbols; - - stat = (lang_input_statement_type *) bfd_asymbol_bfd (newsym)->usrdata; - stat_symbols = stat ? stat->asymbols : 0; - - einfo (message1, - bfd_asymbol_bfd (newsym), newsym->section, stat_symbols, newsym->value, - demangle (newsym->name, 1)); - - stat = (lang_input_statement_type *) bfd_asymbol_bfd (oldsym)->usrdata; - stat_symbols = stat ? stat->asymbols : 0; - - einfo (message2, - bfd_asymbol_bfd (oldsym), oldsym->section, stat_symbols, oldsym->value); -} + va_list arg; -void -info_assert(file, line) - char *file; - unsigned int line; -{ - einfo("%F%P internal error %s %d\n", file,line); + fflush (stdout); + va_start (arg, fmt); + vfinfo (stderr, fmt, arg, TRUE); + va_end (arg); + fflush (stderr); } -/* Return a newly-allocated string - whose contents concatenate those of S1, S2, S3. */ - -char * -concat (s1, s2, s3) - CONST char *s1; - CONST char *s2; - CONST char *s3; +void +info_assert (const char *file, unsigned int line) { - size_t len1 = strlen (s1); - size_t len2 = strlen (s2); - size_t len3 = strlen (s3); - char *result = ldmalloc (len1 + len2 + len3 + 1); - - if (len1 != 0) - memcpy(result, s1, len1); - if (len2 != 0) - memcpy(result+len1, s2, len2); - if (len3 != 0) - memcpy(result+len1+len2, s2, len3); - *(result + len1 + len2 + len3) = 0; - - return result; + einfo (_("%F%P: internal error %s %d\n"), file, line); } +/* ('m' for map) Format info message and print on map. */ -PTR -ldmalloc (size) - size_t size; +void +minfo (const char *fmt, ...) { - PTR result = malloc ((int)size); - - if (result == (char *)NULL && size != 0) - einfo("%F%P virtual memory exhausted\n"); - - return result; -} + if (config.map_file != NULL) + { + va_list arg; -PTR -xmalloc (size) - int size; -{ -return ldmalloc(size); + va_start (arg, fmt); + if (fmt[0] == '%' && fmt[1] == '!' && fmt[2] == 0) + { + /* Stash info about --as-needed shared libraries. Print + later so they don't appear intermingled with archive + library info. */ + struct asneeded_minfo *m = xmalloc (sizeof *m); + + m->next = NULL; + m->soname = va_arg (arg, const char *); + m->ref = va_arg (arg, bfd *); + m->name = va_arg (arg, const char *); + *asneeded_list_tail = m; + asneeded_list_tail = &m->next; + } + else + vfinfo (config.map_file, fmt, arg, FALSE); + va_end (arg); + } } - -PTR -ldrealloc (ptr, size) - PTR ptr; - size_t size; -{ - PTR result = realloc (ptr, (int)size); - - if (result == (char *)NULL && size != 0) - einfo("%F%P virtual memory exhausted\n"); - - return result; -} - -PTR -xrealloc (ptr, size) - PTR ptr; - size_t size; +void +lfinfo (FILE *file, const char *fmt, ...) { -return ldrealloc(ptr, size); -} - + va_list arg; -char * -buystring (x) - CONST char *CONST x; -{ - size_t l = strlen(x)+1; - char *r = ldmalloc(l); - memcpy(r, x,l); - return r; + va_start (arg, fmt); + vfinfo (file, fmt, arg, FALSE); + va_end (arg); } + +/* Functions to print the link map. */ - -/* ('m' for map) Format info message and print on map. */ - -void minfo(va_alist) -va_dcl +void +print_space (void) { - char *fmt; - va_list arg; - va_start(arg); - fmt = va_arg(arg, char *); - vfinfo(config.map_file, fmt, arg); - va_end(arg); + fprintf (config.map_file, " "); } - -static void -finfo (va_alist) - va_dcl +void +print_nl (void) { - char *fmt; - FILE *file; - va_list arg; - va_start (arg); - file = va_arg (arg, FILE *); - fmt = va_arg (arg, char *); - vfinfo (file, fmt, arg); - va_end (arg); + fprintf (config.map_file, "\n"); } +/* A more or less friendly abort message. In ld.h abort is defined to + call this function. */ - -/*---------------------------------------------------------------------- - Functions to print the link map - */ - -void -print_space () -{ - fprintf(config.map_file, " "); -} -void -print_nl () -{ - fprintf(config.map_file, "\n"); -} -void -print_address (value) - bfd_vma value; +void +ld_abort (const char *file, int line, const char *fn) { - fprintf_vma(config.map_file, value); + if (fn != NULL) + einfo (_("%P: internal error: aborting at %s:%d in %s\n"), + file, line, fn); + else + einfo (_("%P: internal error: aborting at %s:%d\n"), + file, line); + einfo (_("%P%F: please report this bug\n")); + xexit (1); }