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Stop readekf and objdump from aggressively following links.

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* dwarf.c (dwarf_select_sections_by_names): Return zero if no
	sections were selected.
	(dwarf_select_sections_by_letters): Likewise.
	* dwarf.h: (dwarf_select_sections_by_names): Update prototype.
	(dwarf_select_sections_by_letters): Update prototype.
	* objdump.c (might_need_separate_debug_info): New function.
	(dump_bfd): Call new function before attempting to load separate
	debug info files.
	(main): Do not enable dwarf section dumping for -WK or -WN.
	* readelf.c (parse_args): Do not enable dwarf section dumping for
	-wK or -wN.
	(might_need_separate_debug_info): New function.
	(process_object): Call new function before attempting to load
	separate debug info files.
	* testsuite/binutils-all/debuginfo.exp: Expect -WE and -wE
	debuginfod tests to pass.
	* testsuite/binutils-all/objdump.Wk: Add extra regexps.
	* testsuite/binutils-all/readelf.k: Add extra regexps.
This commit is contained in:
Nick Clifton
2022-05-20 16:55:36 +01:00
parent 9ecdcd1be1
commit 94585d6d44
8 changed files with 179 additions and 66 deletions
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110
binutils/dwarf.c
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@ -12062,7 +12062,11 @@ free_debug_memory (void)
free_dwo_info ();
}
void
/* Enable display of specific DWARF sections as determined by the comma
separated strings in NAMES. Returns non-zero if any displaying was
enabled. */
int
dwarf_select_sections_by_names (const char *names)
{
typedef struct
@ -12115,6 +12119,7 @@ dwarf_select_sections_by_names (const char *names)
};
const char *p;
int result = 0;
p = names;
while (*p)
@ -12129,6 +12134,7 @@ dwarf_select_sections_by_names (const char *names)
&& (p[len] == ',' || p[len] == '\0'))
{
* entry->variable = entry->val;
result |= entry->val;
/* The --debug-dump=frames-interp option also
enables the --debug-dump=frames option. */
@ -12151,48 +12157,82 @@ dwarf_select_sections_by_names (const char *names)
if (*p == ',')
p++;
}
return result;
}
void
/* Enable display of specific DWARF sections as determined by the characters
in LETTERS. Returns non-zero if any displaying was enabled. */
int
dwarf_select_sections_by_letters (const char *letters)
{
unsigned int lindex = 0;
typedef struct
{
const char letter;
int * variable;
int val;
bool cont;
}
debug_dump_letter_opts;
while (letters[lindex])
switch (letters[lindex++])
{
case 'A': do_debug_addr = 1; break;
case 'a': do_debug_abbrevs = 1; break;
case 'c': do_debug_cu_index = 1; break;
static const debug_dump_letter_opts letter_table [] =
{
{ 'A', & do_debug_addr, 1, false},
{ 'a', & do_debug_abbrevs, 1, false },
{ 'c', & do_debug_cu_index, 1, false },
#ifdef HAVE_LIBDEBUGINFOD
case 'D': use_debuginfod = 1; break;
case 'E': use_debuginfod = 0; break;
{ 'D', & use_debuginfod, 1, false },
{ 'E', & use_debuginfod, 0, false },
#endif
case 'F': do_debug_frames_interp = 1; /* Fall through. */
case 'f': do_debug_frames = 1; break;
case 'g': do_gdb_index = 1; break;
case 'i': do_debug_info = 1; break;
case 'K': do_follow_links = 1; break;
case 'N': do_follow_links = 0; break;
case 'k': do_debug_links = 1; break;
case 'l': do_debug_lines |= FLAG_DEBUG_LINES_RAW; break;
case 'L': do_debug_lines |= FLAG_DEBUG_LINES_DECODED; break;
case 'm': do_debug_macinfo = 1; break;
case 'O': do_debug_str_offsets = 1; break;
case 'o': do_debug_loc = 1; break;
case 'p': do_debug_pubnames = 1; break;
case 'R': do_debug_ranges = 1; break;
case 'r': do_debug_aranges = 1; break;
case 's': do_debug_str = 1; break;
case 'T': do_trace_aranges = 1; break;
case 't': do_debug_pubtypes = 1; break;
case 'U': do_trace_info = 1; break;
case 'u': do_trace_abbrevs = 1; break;
{ 'F', & do_debug_frames_interp, 1, true }, /* Note the fall through. */
{ 'f', & do_debug_frames, 1, false },
{ 'g', & do_gdb_index, 1, false },
{ 'i', & do_debug_info, 1, false },
{ 'K', & do_follow_links, 1, false },
{ 'k', & do_debug_links, 1, false },
{ 'L', & do_debug_lines, FLAG_DEBUG_LINES_DECODED, false },
{ 'l', & do_debug_lines, FLAG_DEBUG_LINES_RAW, false },
{ 'm', & do_debug_macinfo, 1, false },
{ 'N', & do_follow_links, 0, false },
{ 'O', & do_debug_str_offsets, 1, false },
{ 'o', & do_debug_loc, 1, false },
{ 'p', & do_debug_pubnames, 1, false },
{ 'R', & do_debug_ranges, 1, false },
{ 'r', & do_debug_aranges, 1, false },
{ 's', & do_debug_str, 1, false },
{ 'T', & do_trace_aranges, 1, false },
{ 't', & do_debug_pubtypes, 1, false },
{ 'U', & do_trace_info, 1, false },
{ 'u', & do_trace_abbrevs, 1, false },
{ 0, NULL, 0, false }
};
default:
warn (_("Unrecognized debug option '%s'\n"), letters);
break;
}
int result = 0;
while (* letters)
{
const debug_dump_letter_opts * entry;
for (entry = letter_table; entry->letter; entry++)
{
if (entry->letter == * letters)
{
* entry->variable |= entry->val;
result |= entry->val;
if (! entry->cont)
break;
}
}
if (entry->letter == 0)
warn (_("Unrecognized debug letter option '%c'\n"), * letters);
letters ++;
}
return result;
}
void