/* Shared code to pre-read a stab (dbx-style), when building a psymtab.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
Free Software Foundation, Inc.
This file is part of GDB.
CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_DATA);
goto record_it;
+ case N_BSS:
case N_BSS | N_EXT:
case N_NBBSS | N_EXT:
case N_SETV | N_EXT: /* FIXME, is this in BSS? */
|| (namestring [(nsl = strlen (namestring)) - 1] == 'o'
&& namestring [nsl - 2] == '.')
#ifdef GDB_TARGET_IS_HPPA
- /* some cooperation from gcc to get around ld stupidity */
+ /* This braindamage is necessary for versions of GCC 2.6 and
+ earlier; it will not be necessary for GCC 2.7.
+
+ In a nutshell, we need a way to determine when we've hit
+ the end of a file with debug symbols. Most ports do this
+ with a N_SO record with a NULL symbol name (as will GCC 2.7
+ on the PA). GCC 2.6 (and earlier) on the PA instead creates
+ an N_TEXT symbol with the name "end_file." */
|| (namestring[0] == 'e' && STREQ (namestring, "end_file."))
#endif
)
past_first_source_file = 1;
last_o_file_start = CUR_SYMBOL_VALUE;
}
+ else
+ goto record_it;
#endif /* DBXREAD_ONLY */
continue;
case N_DATA:
-#ifdef DBXREAD_ONLY
CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_DATA);
- SET_NAMESTRING ();
- /* Check for __DYNAMIC, which is used by Sun shared libraries.
- Record it even if it's local, not global, so we can find it.
- FIXME: this might want to check for _DYNAMIC and the current
- symbol_leading_char. */
- if (namestring[8] == 'C' && STREQ ("__DYNAMIC", namestring))
- goto record_it;
-
- /* Same with virtual function tables, both global and static. */
- {
- char *tempstring = namestring;
- if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd))
- tempstring++;
- if (VTBL_PREFIX_P ((tempstring)))
- goto record_it;
- }
-#endif /* DBXREAD_ONLY */
- continue;
+ goto record_it;
case N_UNDF | N_EXT:
#ifdef DBXREAD_ONLY
/* Lots of symbol types we can just ignore. */
case N_ABS:
- case N_BSS:
case N_NBDATA:
case N_NBBSS:
continue;
SET_NAMESTRING();
+ /* Null name means end of .o file. Don't start a new one. */
+ if (*namestring == '\000')
+ continue;
+
/* Some compilers (including gcc) emit a pair of initial N_SOs.
The first one is a directory name; the second the file name.
If pst exists, is empty, and has a filename ending in '/',
}
case N_BINCL:
+ {
#ifdef DBXREAD_ONLY
- /* Add this bincl to the bincl_list for future EXCLs. No
- need to save the string; it'll be around until
- read_dbx_symtab function returns */
+ enum language tmp_language;
+ /* Add this bincl to the bincl_list for future EXCLs. No
+ need to save the string; it'll be around until
+ read_dbx_symtab function returns */
- SET_NAMESTRING();
+ SET_NAMESTRING();
+
+ tmp_language = deduce_language_from_filename (namestring);
+
+ /* Only change the psymtab's language if we've learned
+ something useful (eg. tmp_language is not language_unknown).
+ In addition, to match what start_subfile does, never change
+ from C++ to C. */
+ if (tmp_language != language_unknown
+ && (tmp_language != language_c
+ || psymtab_language != language_cplus))
+ psymtab_language = tmp_language;
- add_bincl_to_list (pst, namestring, CUR_SYMBOL_VALUE);
+ add_bincl_to_list (pst, namestring, CUR_SYMBOL_VALUE);
- /* Mark down an include file in the current psymtab */
+ /* Mark down an include file in the current psymtab */
- goto record_include_file;
+ goto record_include_file;
#else /* DBXREAD_ONLY */
- continue;
+ continue;
#endif
+ }
case N_SOL:
- /* Mark down an include file in the current psymtab */
-
- SET_NAMESTRING();
-
- /* In C++, one may expect the same filename to come round many
- times, when code is coming alternately from the main file
- and from inline functions in other files. So I check to see
- if this is a file we've seen before -- either the main
- source file, or a previously included file.
-
- This seems to be a lot of time to be spending on N_SOL, but
- things like "break c-exp.y:435" need to work (I
- suppose the psymtab_include_list could be hashed or put
- in a binary tree, if profiling shows this is a major hog). */
- if (pst && STREQ (namestring, pst->filename))
- continue;
{
- register int i;
- for (i = 0; i < includes_used; i++)
- if (STREQ (namestring, psymtab_include_list[i]))
- {
- i = -1;
- break;
- }
- if (i == -1)
+ enum language tmp_language;
+ /* Mark down an include file in the current psymtab */
+
+ SET_NAMESTRING();
+
+ tmp_language = deduce_language_from_filename (namestring);
+
+ /* Only change the psymtab's language if we've learned
+ something useful (eg. tmp_language is not language_unknown).
+ In addition, to match what start_subfile does, never change
+ from C++ to C. */
+ if (tmp_language != language_unknown
+ && (tmp_language != language_c
+ || psymtab_language != language_cplus))
+ psymtab_language = tmp_language;
+
+ /* In C++, one may expect the same filename to come round many
+ times, when code is coming alternately from the main file
+ and from inline functions in other files. So I check to see
+ if this is a file we've seen before -- either the main
+ source file, or a previously included file.
+
+ This seems to be a lot of time to be spending on N_SOL, but
+ things like "break c-exp.y:435" need to work (I
+ suppose the psymtab_include_list could be hashed or put
+ in a binary tree, if profiling shows this is a major hog). */
+ if (pst && STREQ (namestring, pst->filename))
continue;
- }
-
- record_include_file:
-
- psymtab_include_list[includes_used++] = namestring;
- if (includes_used >= includes_allocated)
{
- char **orig = psymtab_include_list;
-
- psymtab_include_list = (char **)
- alloca ((includes_allocated *= 2) *
- sizeof (char *));
- memcpy ((PTR)psymtab_include_list, (PTR)orig,
- includes_used * sizeof (char *));
+ register int i;
+ for (i = 0; i < includes_used; i++)
+ if (STREQ (namestring, psymtab_include_list[i]))
+ {
+ i = -1;
+ break;
+ }
+ if (i == -1)
+ continue;
}
- continue;
-
+
+#ifdef DBXREAD_ONLY
+ record_include_file:
+#endif
+
+ psymtab_include_list[includes_used++] = namestring;
+ if (includes_used >= includes_allocated)
+ {
+ char **orig = psymtab_include_list;
+
+ psymtab_include_list = (char **)
+ alloca ((includes_allocated *= 2) *
+ sizeof (char *));
+ memcpy ((PTR)psymtab_include_list, (PTR)orig,
+ includes_used * sizeof (char *));
+ }
+ continue;
+ }
case N_LSYM: /* Typedef or automatic variable. */
case N_STSYM: /* Data seg var -- static */
case N_LCSYM: /* BSS " */
objfile);
p += 1;
}
+ /* The semantics of C++ state that "struct foo { ... }"
+ also defines a typedef for "foo". Unfortuantely, cfront
+ never makes the typedef when translating from C++ to C.
+ We make the typedef here so that "ptype foo" works as
+ expected for cfront translated code. */
+ else if (psymtab_language == language_cplus)
+ {
+ /* Also a typedef with the same name. */
+ ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_TYPEDEF,
+ objfile->static_psymbols,
+ CUR_SYMBOL_VALUE, psymtab_language,
+ objfile);
+ }
}
goto check_enum;
case 't':
/* Check for and handle cretinous dbx symbol name
continuation! */
- if (*p == '\\')
+ if (*p == '\\' || (*p == '?' && p[1] == '\0'))
p = next_symbol_text ();
/* Point to the character after the name
continue;
case 'f':
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
#ifdef DBXREAD_ONLY
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
- if (pst && pst->textlow == 0)
+ /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit
+ value for the bottom of the text seg in those cases. */
+ if (pst && pst->textlow == 0 && !symfile_relocatable)
pst->textlow = CUR_SYMBOL_VALUE;
#if 0
if (startup_file_end == 0)
are put into the global psymtab like one would expect.
They're also in the minimal symbol table. */
case 'F':
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
#ifdef DBXREAD_ONLY
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
- if (pst && pst->textlow == 0)
+ /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit
+ value for the bottom of the text seg in those cases. */
+ if (pst && pst->textlow == 0 && !symfile_relocatable)
pst->textlow = CUR_SYMBOL_VALUE;
#if 0
if (startup_file_end == 0)
case '9':
continue;
- default:
- /* Unexpected symbol. Ignore it; perhaps it is an extension
- that we don't know about.
-
- Someone says sun cc puts out symbols like
+ case ':':
+ /* It is a C++ nested symbol. We don't need to record it
+ (I don't think); if we try to look up foo::bar::baz,
+ then symbols for the symtab containing foo should get
+ read in, I think. */
+ /* Someone says sun cc puts out symbols like
/foo/baz/maclib::/usr/local/bin/maclib,
which would get here with a symbol type of ':'. */
+ continue;
+
+ default:
+ /* Unexpected symbol descriptor. The second and subsequent stabs
+ of a continued stab can show up here. The question is
+ whether they ever can mimic a normal stab--it would be
+ nice if not, since we certainly don't want to spend the
+ time searching to the end of every string looking for
+ a backslash. */
+
complain (&unknown_symchar_complaint, p[1]);
+
+ /* Ignore it; perhaps it is an extension that we don't
+ know about. */
continue;
}
(dependencies_used
* sizeof (struct partial_symtab *)));
#ifdef DEBUG_INFO
- fprintf (stderr, "Had to reallocate dependency list.\n");
- fprintf (stderr, "New dependencies allocated: %d\n",
+ fprintf_unfiltered (gdb_stderr, "Had to reallocate dependency list.\n");
+ fprintf_unfiltered (gdb_stderr, "New dependencies allocated: %d\n",
dependencies_allocated);
#endif
}
}
- else
- error ("Invalid symbol data: \"repeated\" header file not previously seen, at symtab pos %d.",
- symnum);
}
#endif /* DBXREAD_ONLY */
continue;
projects / binutils.git / blobdiff