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/* ldmisc.c
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Copyright (C) 1991-2022 Free Software Foundation, Inc.
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Written by Steve Chamberlain of Cygnus Support.
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This file is part of the GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libiberty.h"
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#include "ctf-api.h"
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#include "safe-ctype.h"
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#include "filenames.h"
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#include "demangle.h"
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#include <stdarg.h>
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#include "ld.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include <ldgram.h>
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#include "ldlex.h"
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#include "ldmain.h"
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#include "ldfile.h"
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/*
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%% literal %
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%C clever filename:linenumber with function
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%D like %C, but no function name
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%E current bfd error or errno
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%F error is fatal
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%G like %D, but only function name
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%H like %C but in addition emit section+offset
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%P print program name
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%V hex bfd_vma
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%W hex bfd_vma with 0x with no leading zeros taking up 8 spaces
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%X no object output, fail return
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%d integer, like printf
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%ld long, like printf
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%lu unsigned long, like printf
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%p native (host) void* pointer, like printf
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%pA section name from a section
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%pB filename from a bfd
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%pI filename from a lang_input_statement_type
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%pR info about a relent
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%pS print script file and linenumber from etree_type.
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%pT symbol name
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%pU print script file without linenumber from etree_type.
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%s arbitrary string, like printf
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%u integer, like printf
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%v hex bfd_vma, no leading zeros
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*/
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void
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vfinfo (FILE *fp, const char *fmt, va_list ap, bool is_warning)
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{
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bool fatal = false;
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const char *scan;
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int arg_type;
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unsigned int arg_count = 0;
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unsigned int arg_no;
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union vfinfo_args
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{
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int i;
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long l;
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void *p;
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bfd_vma v;
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struct {
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bfd *abfd;
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asection *sec;
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bfd_vma off;
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} reladdr;
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enum
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{
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Bad,
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Int,
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Long,
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Ptr,
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Vma,
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RelAddr
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} type;
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} args[9];
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for (arg_no = 0; arg_no < sizeof (args) / sizeof (args[0]); arg_no++)
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args[arg_no].type = Bad;
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arg_count = 0;
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scan = fmt;
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while (*scan != '\0')
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{
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while (*scan != '%' && *scan != '\0')
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scan++;
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if (*scan == '%')
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{
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scan++;
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arg_no = arg_count;
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if (*scan != '0' && ISDIGIT (*scan) && scan[1] == '$')
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{
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arg_no = *scan - '1';
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scan += 2;
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}
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arg_type = Bad;
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switch (*scan++)
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{
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case '\0':
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--scan;
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break;
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case 'V':
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case 'v':
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case 'W':
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arg_type = Vma;
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break;
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case 's':
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arg_type = Ptr;
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break;
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case 'p':
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if (*scan == 'A' || *scan == 'B' || *scan == 'I'
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|| *scan == 'R' || *scan == 'S' || *scan == 'T')
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scan++;
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arg_type = Ptr;
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break;
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case 'C':
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case 'D':
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case 'G':
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case 'H':
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arg_type = RelAddr;
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break;
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case 'd':
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case 'u':
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arg_type = Int;
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break;
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case 'l':
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if (*scan == 'd' || *scan == 'u')
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{
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++scan;
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arg_type = Long;
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}
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break;
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default:
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break;
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}
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if (arg_type != Bad)
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{
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if (arg_no >= sizeof (args) / sizeof (args[0]))
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abort ();
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args[arg_no].type = arg_type;
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++arg_count;
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}
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}
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}
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for (arg_no = 0; arg_no < arg_count; arg_no++)
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{
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switch (args[arg_no].type)
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{
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case Int:
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args[arg_no].i = va_arg (ap, int);
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break;
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case Long:
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args[arg_no].l = va_arg (ap, long);
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break;
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case Ptr:
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args[arg_no].p = va_arg (ap, void *);
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break;
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case Vma:
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args[arg_no].v = va_arg (ap, bfd_vma);
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break;
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case RelAddr:
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args[arg_no].reladdr.abfd = va_arg (ap, bfd *);
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args[arg_no].reladdr.sec = va_arg (ap, asection *);
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args[arg_no].reladdr.off = va_arg (ap, bfd_vma);
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break;
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default:
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abort ();
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}
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}
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arg_count = 0;
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while (*fmt != '\0')
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{
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const char *str = fmt;
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while (*fmt != '%' && *fmt != '\0')
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fmt++;
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if (fmt != str)
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if (fwrite (str, 1, fmt - str, fp))
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{
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/* Ignore. */
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}
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if (*fmt == '%')
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{
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fmt++;
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arg_no = arg_count;
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if (*fmt != '0' && ISDIGIT (*fmt) && fmt[1] == '$')
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{
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arg_no = *fmt - '1';
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fmt += 2;
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}
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switch (*fmt++)
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{
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case '\0':
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--fmt;
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/* Fall through. */
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case '%':
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/* literal % */
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putc ('%', fp);
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break;
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case 'X':
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/* no object output, fail return */
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config.make_executable = false;
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break;
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case 'V':
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/* hex bfd_vma */
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{
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bfd_vma value = args[arg_no].v;
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++arg_count;
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fprintf_vma (fp, value);
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}
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break;
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case 'v':
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/* hex bfd_vma, no leading zeros */
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{
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char buf[100];
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char *p = buf;
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bfd_vma value = args[arg_no].v;
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++arg_count;
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sprintf_vma (p, value);
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while (*p == '0')
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p++;
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if (!*p)
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p--;
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fputs (p, fp);
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}
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break;
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case 'W':
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/* hex bfd_vma with 0x with no leading zeroes taking up
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8 spaces. */
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{
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char buf[100];
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bfd_vma value;
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char *p;
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int len;
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value = args[arg_no].v;
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++arg_count;
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sprintf_vma (buf, value);
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for (p = buf; *p == '0'; ++p)
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;
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if (*p == '\0')
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--p;
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len = strlen (p);
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while (len < 8)
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{
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putc (' ', fp);
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++len;
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}
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fprintf (fp, "0x%s", p);
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}
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break;
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case 'F':
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/* Error is fatal. */
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fatal = true;
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break;
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case 'P':
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/* Print program name. */
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fprintf (fp, "%s", program_name);
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break;
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case 'E':
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/* current bfd error or errno */
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fprintf (fp, "%s", bfd_errmsg (bfd_get_error ()));
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break;
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case 'C':
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case 'D':
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case 'G':
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case 'H':
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/* Clever filename:linenumber with function name if possible.
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The arguments are a BFD, a section, and an offset. */
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{
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static bfd *last_bfd;
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static char *last_file;
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static char *last_function;
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bfd *abfd;
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asection *section;
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bfd_vma offset;
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asymbol **asymbols = NULL;
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const char *filename;
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const char *functionname;
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unsigned int linenumber;
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bool discard_last;
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bool done;
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bfd_error_type last_bfd_error = bfd_get_error ();
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abfd = args[arg_no].reladdr.abfd;
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section = args[arg_no].reladdr.sec;
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offset = args[arg_no].reladdr.off;
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++arg_count;
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if (abfd != NULL)
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{
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if (!bfd_generic_link_read_symbols (abfd))
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einfo (_("%F%P: %pB: could not read symbols: %E\n"), abfd);
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asymbols = bfd_get_outsymbols (abfd);
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}
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/* The GNU Coding Standard requires that error messages
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be of the form:
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source-file-name:lineno: message
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We do not always have a line number available so if
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we cannot find them we print out the section name and
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offset instead. */
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discard_last = true;
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if (abfd != NULL
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&& bfd_find_nearest_line (abfd, section, asymbols, offset,
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&filename, &functionname,
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&linenumber))
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{
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if (functionname != NULL
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&& (fmt[-1] == 'C' || fmt[-1] == 'H'))
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{
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/* Detect the case where we are printing out a
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message for the same function as the last
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call to vinfo ("%C"). In this situation do
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not print out the ABFD filename or the
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function name again. Note - we do still
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print out the source filename, as this will
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allow programs that parse the linker's output
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(eg emacs) to correctly locate multiple
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errors in the same source file. */
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if (last_bfd == NULL
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|| last_function == NULL
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|| last_bfd != abfd
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|| (last_file == NULL) != (filename == NULL)
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|| (filename != NULL
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&& filename_cmp (last_file, filename) != 0)
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|| strcmp (last_function, functionname) != 0)
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{
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lfinfo (fp, _("%pB: in function `%pT':\n"),
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abfd, functionname);
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last_bfd = abfd;
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free (last_file);
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last_file = NULL;
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if (filename)
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last_file = xstrdup (filename);
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free (last_function);
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last_function = xstrdup (functionname);
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}
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discard_last = false;
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}
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else
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lfinfo (fp, "%pB:", abfd);
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if (filename != NULL)
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fprintf (fp, "%s:", filename);
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done = fmt[-1] != 'H';
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if (functionname != NULL && fmt[-1] == 'G')
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lfinfo (fp, "%pT", functionname);
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else if (filename != NULL && linenumber != 0)
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fprintf (fp, "%u%s", linenumber, done ? "" : ":");
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else
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done = false;
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}
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else
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{
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lfinfo (fp, "%pB:", abfd);
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done = false;
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}
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if (!done)
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lfinfo (fp, "(%pA+0x%v)", section, offset);
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bfd_set_error (last_bfd_error);
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if (discard_last)
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{
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last_bfd = NULL;
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free (last_file);
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last_file = NULL;
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free (last_function);
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last_function = NULL;
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}
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}
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break;
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case 'p':
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if (*fmt == 'A')
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{
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/* section name from a section */
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asection *sec;
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bfd *abfd;
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fmt++;
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sec = (asection *) args[arg_no].p;
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++arg_count;
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fprintf (fp, "%s", sec->name);
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abfd = sec->owner;
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|
if (abfd != NULL)
|
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|
{
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|
const char *group = bfd_group_name (abfd, sec);
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|
if (group != NULL)
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|
fprintf (fp, "[%s]", group);
|
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|
}
|
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|
}
|
|
|
else if (*fmt == 'B')
|
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|
{
|
|
|
/* filename from a bfd */
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|
bfd *abfd = (bfd *) args[arg_no].p;
|
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|
|
|
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fmt++;
|
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|
++arg_count;
|
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|
if (abfd == NULL)
|
|
|
fprintf (fp, "%s generated", program_name);
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|
else if (abfd->my_archive != NULL
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|
&& !bfd_is_thin_archive (abfd->my_archive))
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|
fprintf (fp, "%s(%s)",
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|
bfd_get_filename (abfd->my_archive),
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|
bfd_get_filename (abfd));
|
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|
else
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|
fprintf (fp, "%s", bfd_get_filename (abfd));
|
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|
}
|
|
|
else if (*fmt == 'I')
|
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|
{
|
|
|
/* filename from a lang_input_statement_type */
|
|
|
lang_input_statement_type *i;
|
|
|
|
|
|
fmt++;
|
|
|
i = (lang_input_statement_type *) args[arg_no].p;
|
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|
++arg_count;
|
|
|
if (i->the_bfd != NULL
|
|
|
&& i->the_bfd->my_archive != NULL
|
|
|
&& !bfd_is_thin_archive (i->the_bfd->my_archive))
|
|
|
fprintf (fp, "(%s)%s",
|
|
|
bfd_get_filename (i->the_bfd->my_archive),
|
|
|
i->local_sym_name);
|
|
|
else
|
|
|
fprintf (fp, "%s", i->filename);
|
|
|
}
|
|
|
else if (*fmt == 'R')
|
|
|
{
|
|
|
/* Print all that's interesting about a relent. */
|
|
|
arelent *relent = (arelent *) args[arg_no].p;
|
|
|
|
|
|
fmt++;
|
|
|
++arg_count;
|
|
|
lfinfo (fp, "%s+0x%v (type %s)",
|
|
|
(*(relent->sym_ptr_ptr))->name,
|
|
|
relent->addend,
|
|
|
relent->howto->name);
|
|
|
}
|
|
|
else if (*fmt == 'S' || *fmt == 'U')
|
|
|
{
|
|
|
/* Print script file and perhaps the associated linenumber. */
|
|
|
etree_type node;
|
|
|
etree_type *tp = (etree_type *) args[arg_no].p;
|
|
|
|
|
|
fmt++;
|
|
|
++arg_count;
|
|
|
if (tp == NULL)
|
|
|
{
|
|
|
tp = &node;
|
|
|
tp->type.filename = ldlex_filename ();
|
|
|
tp->type.lineno = lineno;
|
|
|
}
|
|
|
if (tp->type.filename != NULL && fmt[-1] == 'S')
|
|
|
fprintf (fp, "%s:%u", tp->type.filename, tp->type.lineno);
|
|
|
else if (tp->type.filename != NULL && fmt[-1] == 'U')
|
|
|
fprintf (fp, "%s", tp->type.filename);
|
|
|
}
|
|
|
else if (*fmt == 'T')
|
|
|
{
|
|
|
/* Symbol name. */
|
|
|
const char *name = (const char *) args[arg_no].p;
|
|
|
|
|
|
fmt++;
|
|
|
++arg_count;
|
|
|
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);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/* native (host) void* pointer, like printf */
|
|
|
fprintf (fp, "%p", args[arg_no].p);
|
|
|
++arg_count;
|
|
|
}
|
|
|
break;
|
|
|
|
|
|
case 's':
|
|
|
/* arbitrary string, like printf */
|
|
|
fprintf (fp, "%s", (char *) args[arg_no].p);
|
|
|
++arg_count;
|
|
|
break;
|
|
|
|
|
|
case 'd':
|
|
|
/* integer, like printf */
|
|
|
fprintf (fp, "%d", args[arg_no].i);
|
|
|
++arg_count;
|
|
|
break;
|
|
|
|
|
|
case 'u':
|
|
|
/* unsigned integer, like printf */
|
|
|
fprintf (fp, "%u", args[arg_no].i);
|
|
|
++arg_count;
|
|
|
break;
|
|
|
|
|
|
case 'l':
|
|
|
if (*fmt == 'd')
|
|
|
{
|
|
|
fprintf (fp, "%ld", args[arg_no].l);
|
|
|
++arg_count;
|
|
|
++fmt;
|
|
|
break;
|
|
|
}
|
|
|
else if (*fmt == 'u')
|
|
|
{
|
|
|
fprintf (fp, "%lu", args[arg_no].l);
|
|
|
++arg_count;
|
|
|
++fmt;
|
|
|
break;
|
|
|
}
|
|
|
/* Fallthru */
|
|
|
|
|
|
default:
|
|
|
fprintf (fp, "%%%c", fmt[-1]);
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (is_warning && config.fatal_warnings)
|
|
|
config.make_executable = false;
|
|
|
|
|
|
if (fatal)
|
|
|
xexit (1);
|
|
|
}
|
|
|
|
|
|
/* 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
|
|
|
info_msg (const char *fmt, ...)
|
|
|
{
|
|
|
va_list arg;
|
|
|
|
|
|
va_start (arg, fmt);
|
|
|
vfinfo (stdout, fmt, arg, false);
|
|
|
va_end (arg);
|
|
|
}
|
|
|
|
|
|
/* ('e' for error.) Format info message and print on stderr. */
|
|
|
|
|
|
void
|
|
|
einfo (const char *fmt, ...)
|
|
|
{
|
|
|
va_list arg;
|
|
|
|
|
|
fflush (stdout);
|
|
|
va_start (arg, fmt);
|
|
|
vfinfo (stderr, fmt, arg, true);
|
|
|
va_end (arg);
|
|
|
fflush (stderr);
|
|
|
}
|
|
|
|
|
|
void
|
|
|
info_assert (const char *file, unsigned int line)
|
|
|
{
|
|
|
einfo (_("%F%P: internal error %s %d\n"), file, line);
|
|
|
}
|
|
|
|
|
|
/* ('m' for map) Format info message and print on map. */
|
|
|
|
|
|
void
|
|
|
minfo (const char *fmt, ...)
|
|
|
{
|
|
|
if (config.map_file != NULL)
|
|
|
{
|
|
|
va_list arg;
|
|
|
|
|
|
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);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void
|
|
|
lfinfo (FILE *file, const char *fmt, ...)
|
|
|
{
|
|
|
va_list arg;
|
|
|
|
|
|
va_start (arg, fmt);
|
|
|
vfinfo (file, fmt, arg, false);
|
|
|
va_end (arg);
|
|
|
}
|
|
|
|
|
|
/* Functions to print the link map. */
|
|
|
|
|
|
void
|
|
|
print_space (void)
|
|
|
{
|
|
|
fprintf (config.map_file, " ");
|
|
|
}
|
|
|
|
|
|
void
|
|
|
print_nl (void)
|
|
|
{
|
|
|
fprintf (config.map_file, "\n");
|
|
|
}
|
|
|
|
|
|
/* A more or less friendly abort message. In ld.h abort is defined to
|
|
|
call this function. */
|
|
|
|
|
|
void
|
|
|
ld_abort (const char *file, int line, const char *fn)
|
|
|
{
|
|
|
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 (_("%F%P: please report this bug\n"));
|
|
|
xexit (1);
|
|
|
}
|