Implement generic debugging support. Implement a stabs reader and
a generic printer. * budbg.h, debug.c, debug.h, prdbg.c, rddbg.c, stabs.c: New files. * objdump.c: Include "debug.h" and "budbg.h". (dump_debugging): New global variable. (usage): Mention --debugging. (long_options): Add "debugging". (display_bfd): Handle --debugging. * Makefile.in (OBJDUMP_OBJS): New variable. ($(OBJDUMP_PROG)): Use $(OBJDUMP_OBJS). * binutils.texi, objdump.1: Document --debugging.
This commit is contained in:
Ian Lance Taylor
parent
cd46af111e
commit
e1c145993e
10 changed files with 8471 additions and 41 deletions
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@ -21,11 +21,11 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "getopt.h"
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#include "progress.h"
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#include "bucomm.h"
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#include <sys/types.h>
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#include <stdio.h>
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#include <ctype.h>
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#include "dis-asm.h"
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#include "libiberty.h"
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#include "debug.h"
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#include "budbg.h"
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/* Internal headers for the ELF .stab-dump code - sorry. */
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#define BYTES_IN_WORD 32
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@ -60,6 +60,7 @@ char *only; /* -j secname */
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int wide_output; /* -w */
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bfd_vma start_address = (bfd_vma) -1; /* --start-address */
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bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
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int dump_debugging; /* --debugging */
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/* Extra info to pass to the disassembler address printing function. */
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struct objdump_disasm_info {
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@ -120,6 +121,9 @@ objdump_print_address PARAMS ((bfd_vma, struct disassemble_info *));
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static void
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show_line PARAMS ((bfd *, asection *, bfd_vma));
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static const char *
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endian_string PARAMS ((enum bfd_endian));
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void
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usage (stream, status)
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@ -128,7 +132,7 @@ usage (stream, status)
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{
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fprintf (stream, "\
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Usage: %s [-ahifdDprRtTxsSlw] [-b bfdname] [-m machine] [-j section-name]\n\
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[--archive-headers] [--target=bfdname] [--disassemble]\n\
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[--archive-headers] [--target=bfdname] [--debugging] [--disassemble]\n\
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[--disassemble-all] [--file-headers] [--section-headers] [--headers]\n\
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[--info] [--section=section-name] [--line-numbers] [--source]\n",
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program_name);
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@ -153,6 +157,7 @@ static struct option long_options[]=
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{"private-headers", no_argument, NULL, 'p'},
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{"architecture", required_argument, NULL, 'm'},
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{"archive-headers", no_argument, NULL, 'a'},
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{"debugging", no_argument, &dump_debugging, 1},
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{"disassemble", no_argument, NULL, 'd'},
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{"disassemble-all", no_argument, NULL, 'D'},
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{"dynamic-reloc", no_argument, NULL, 'R'},
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@ -321,7 +326,7 @@ remove_useless_symbols (symbols, count)
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return out_ptr - symbols;
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}
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/* Sort symbols into value order. */
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/* Sort symbols into value order. */
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static int
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compare_symbols (ap, bp)
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@ -333,6 +338,7 @@ compare_symbols (ap, bp)
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const char *an, *bn;
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size_t anl, bnl;
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boolean af, bf;
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flagword aflags, bflags;
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if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
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return 1;
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@ -381,6 +387,27 @@ compare_symbols (ap, bp)
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if (! af && bf)
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return -1;
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/* Finally, try to sort global symbols before local symbols before
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debugging symbols. */
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aflags = a->flags;
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bflags = b->flags;
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if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
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{
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if ((aflags & BSF_DEBUGGING) != 0)
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return 1;
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else
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return -1;
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}
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if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
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{
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if ((aflags & BSF_LOCAL) != 0)
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return 1;
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else
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return -1;
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}
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return 0;
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}
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@ -432,9 +459,6 @@ objdump_print_address (vma, info)
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bfd_vma vma;
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struct disassemble_info *info;
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{
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/* @@ For relocateable files, should filter out symbols belonging to
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the wrong section. Unfortunately, not enough information is supplied
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to this routine to determine the correct section in all cases. */
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/* @@ Would it speed things up to cache the last two symbols returned,
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and maybe their address ranges? For many processors, only one memory
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operand can be present at a time, so the 2-entry cache wouldn't be
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@ -471,43 +495,14 @@ objdump_print_address (vma, info)
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}
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/* The symbol we want is now in min, the low end of the range we
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were searching. */
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were searching. If there are several symbols with the same
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value, we want the first one. */
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thisplace = min;
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while (thisplace > 0
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&& (bfd_asymbol_value (sorted_syms[thisplace])
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== bfd_asymbol_value (sorted_syms[thisplace - 1])))
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--thisplace;
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{
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/* If this symbol isn't global, search for one with the same value
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that is. */
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bfd_vma val = bfd_asymbol_value (sorted_syms[thisplace]);
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long i;
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if (sorted_syms[thisplace]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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for (i = thisplace - 1; i >= 0; i--)
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{
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if (bfd_asymbol_value (sorted_syms[i]) == val
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&& (!(sorted_syms[i]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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|| ((sorted_syms[thisplace]->flags & BSF_DEBUGGING)
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&& !(sorted_syms[i]->flags & BSF_DEBUGGING))))
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{
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thisplace = i;
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break;
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}
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}
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if (sorted_syms[thisplace]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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for (i = thisplace + 1; i < sorted_symcount; i++)
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{
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if (bfd_asymbol_value (sorted_syms[i]) == val
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&& (!(sorted_syms[i]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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|| ((sorted_syms[thisplace]->flags & BSF_DEBUGGING)
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&& !(sorted_syms[i]->flags & BSF_DEBUGGING))))
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{
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thisplace = i;
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break;
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}
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}
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}
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{
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/* If the file is relocateable, and the symbol could be from this
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section, prefer a symbol from this section over symbols from
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@ -1321,6 +1316,18 @@ display_bfd (abfd)
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dump_data (abfd);
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if (disassemble)
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disassemble_data (abfd);
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if (dump_debugging)
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{
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PTR dhandle;
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dhandle = read_debugging_info (abfd);
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if (dhandle != NULL)
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{
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if (! print_debugging_info (stdout, dhandle))
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fprintf (stderr, "%s: printing debugging information failed\n",
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bfd_get_filename (abfd));
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}
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}
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if (syms)
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{
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free (syms);
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@ -1678,6 +1685,18 @@ dump_reloc_set (abfd, relpp, relcount)
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#define L_tmpnam 25
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#endif
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static const char *
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endian_string (endian)
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enum bfd_endian endian;
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{
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if (endian == BFD_ENDIAN_BIG)
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return "big endian";
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else if (endian == BFD_ENDIAN_LITTLE)
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return "little endian";
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else
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return "endianness unknown";
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}
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/* List the targets that BFD is configured to support, each followed
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by its endianness and the architectures it supports. */
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@ -1698,8 +1717,8 @@ display_target_list ()
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int a;
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printf ("%s\n (header %s, data %s)\n", p->name,
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p->header_byteorder_big_p ? "big endian" : "little endian",
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p->byteorder_big_p ? "big endian" : "little endian");
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endian_string (p->header_byteorder),
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endian_string (p->byteorder));
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if (abfd == NULL)
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{
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