/* 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, 1995, 1996
Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* The following need to be defined:
SET_NAMESTRING() --Set namestring to name of symbol.
CUR_SYMBOL_TYPE --Type code of current symbol.
CUR_SYMBOL_VALUE --Value field of current symbol. May be adjusted here.
+ namestring - variable pointing to the name of the stab.
+ section_offsets - variable pointing to the section offsets.
+ pst - the partial symbol table being built.
+
+ psymtab_include_list, includes_used, includes_allocated - list of include
+ file names (N_SOL) seen so far.
+ dependency_list, dependencies_used, dependencies_allocated - list of
+ N_EXCL stabs seen so far.
+
+ END_PSYMTAB -- end a partial symbol table.
+ START_PSYMTAB -- start a partial symbol table.
*/
/* End of macro definitions, now let's handle them symbols! */
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? */
SET_NAMESTRING();
if ((namestring[0] == '-' && namestring[1] == 'l')
|| (namestring [(nsl = strlen (namestring)) - 1] == 'o'
- && namestring [nsl - 2] == '.')
-#ifdef GDB_TARGET_IS_HPPA
- /* some cooperation from gcc to get around ld stupidity */
- || (namestring[0] == 'e' && STREQ (namestring, "end_file."))
-#endif
- )
+ && namestring [nsl - 2] == '.'))
{
-#ifndef GDB_TARGET_IS_HPPA
if (objfile -> ei.entry_point < CUR_SYMBOL_VALUE &&
objfile -> ei.entry_point >= last_o_file_start)
{
objfile -> ei.entry_file_lowpc = last_o_file_start;
objfile -> ei.entry_file_highpc = CUR_SYMBOL_VALUE;
}
-#endif
if (past_first_source_file && pst
/* The gould NP1 uses low values for .o and -l symbols
which are not the address. */
&& CUR_SYMBOL_VALUE >= pst->textlow)
{
END_PSYMTAB (pst, psymtab_include_list, includes_used,
- symnum * symbol_size, CUR_SYMBOL_VALUE,
- dependency_list, dependencies_used);
+ symnum * symbol_size,
+ CUR_SYMBOL_VALUE > pst->texthigh
+ ? CUR_SYMBOL_VALUE : pst->texthigh,
+ dependency_list, dependencies_used, textlow_not_set);
pst = (struct partial_symtab *) 0;
includes_used = 0;
dependencies_used = 0;
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
case N_UNDF:
#ifdef DBXREAD_ONLY
- if (processing_acc_compilation && bufp->n_strx == 1) {
+ if (processing_acc_compilation && CUR_SYMBOL_STRX == 1) {
/* Deal with relative offsets in the string table
used in ELF+STAB under Solaris. If we want to use the
n_strx field, which contains the name of the file,
past_first_source_file = 1;
file_string_table_offset = next_file_string_table_offset;
next_file_string_table_offset =
- file_string_table_offset + bufp->n_value;
+ file_string_table_offset + CUR_SYMBOL_VALUE;
if (next_file_string_table_offset < file_string_table_offset)
error ("string table offset backs up at %d", symnum);
/* FIXME -- replace error() with complaint. */
/* Lots of symbol types we can just ignore. */
case N_ABS:
- case N_BSS:
case N_NBDATA:
case N_NBBSS:
continue;
static int prev_so_symnum = -10;
static int first_so_symnum;
char *p;
+ int prev_textlow_not_set;
valu = CUR_SYMBOL_VALUE + ANOFFSET (section_offsets, SECT_OFF_TEXT);
+ prev_textlow_not_set = textlow_not_set;
+
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* A zero value is probably an indication for the SunPRO 3.0
+ compiler. end_psymtab explicitly tests for zero, so
+ don't relocate it. */
+
+ if (CUR_SYMBOL_VALUE == 0)
+ {
+ textlow_not_set = 1;
+ valu = 0;
+ }
+ else
+ textlow_not_set = 0;
+#else
+ textlow_not_set = 0;
+#endif
past_first_source_file = 1;
if (prev_so_symnum != symnum - 1)
if (pst)
{
END_PSYMTAB (pst, psymtab_include_list, includes_used,
- symnum * symbol_size, valu,
- dependency_list, dependencies_used);
+ symnum * symbol_size,
+ valu > pst->texthigh ? valu : pst->texthigh,
+ dependency_list, dependencies_used,
+ prev_textlow_not_set);
pst = (struct partial_symtab *) 0;
includes_used = 0;
dependencies_used = 0;
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 " */
SET_NAMESTRING();
+#ifdef DBXREAD_ONLY
+ /* See if this is an end of function stab. */
+ if (CUR_SYMBOL_TYPE == N_FUN && *namestring == '\000')
+ {
+ unsigned long valu;
+
+ /* It's value is the size (in bytes) of the function for
+ function relative stabs, or the address of the function's
+ end for old style stabs. */
+ valu = CUR_SYMBOL_VALUE + last_function_start;
+ if (pst->texthigh == 0 || valu > pst->texthigh)
+ pst->texthigh = valu;
+ break;
+ }
+#endif
+
p = (char *) strchr (namestring, ':');
if (!p)
continue; /* Not a debugging symbol. */
{
case 'S':
CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_DATA);
- ADD_PSYMBOL_ADDR_TO_LIST (namestring, p - namestring,
- VAR_NAMESPACE, LOC_STATIC,
- objfile->static_psymbols,
- CUR_SYMBOL_VALUE,
- psymtab_language, objfile);
+#ifdef STATIC_TRANSFORM_NAME
+ namestring = STATIC_TRANSFORM_NAME (namestring);
+#endif
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_STATIC,
+ &objfile->static_psymbols,
+ 0, CUR_SYMBOL_VALUE,
+ psymtab_language, objfile);
continue;
case 'G':
CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_DATA);
/* The addresses in these entries are reported to be
wrong. See the code that reads 'G's for symtabs. */
- ADD_PSYMBOL_ADDR_TO_LIST (namestring, p - namestring,
- VAR_NAMESPACE, LOC_STATIC,
- objfile->global_psymbols,
- CUR_SYMBOL_VALUE,
- psymtab_language, objfile);
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_STATIC,
+ &objfile->global_psymbols,
+ 0, CUR_SYMBOL_VALUE,
+ psymtab_language, objfile);
continue;
case 'T':
if (p != namestring) /* a name is there, not just :T... */
{
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ add_psymbol_to_list (namestring, p - namestring,
STRUCT_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols,
- CUR_SYMBOL_VALUE,
+ &objfile->static_psymbols,
+ CUR_SYMBOL_VALUE, 0,
psymtab_language, objfile);
if (p[2] == 't')
{
/* Also a typedef with the same name. */
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ add_psymbol_to_list (namestring, p - namestring,
VAR_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols,
- CUR_SYMBOL_VALUE, psymtab_language,
- objfile);
+ &objfile->static_psymbols,
+ CUR_SYMBOL_VALUE, 0,
+ psymtab_language, 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, 0,
+ psymtab_language, objfile);
+ }
}
goto check_enum;
case 't':
if (p != namestring) /* a name is there, not just :T... */
{
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ add_psymbol_to_list (namestring, p - namestring,
VAR_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols,
- CUR_SYMBOL_VALUE,
+ &objfile->static_psymbols,
+ CUR_SYMBOL_VALUE, 0,
psymtab_language, objfile);
}
check_enum:
if (*p++ == 'e')
{
+ /* The aix4 compiler emits extra crud before the members. */
+ if (*p == '-')
+ {
+ /* Skip over the type (?). */
+ while (*p != ':')
+ p++;
+
+ /* Skip over the colon. */
+ p++;
+ }
+
/* We have found an enumerated type. */
/* According to comments in read_enum_type
a comma could end it instead of a semicolon.
/* Check for and handle cretinous dbx symbol name
continuation! */
- if (*p == '\\')
- p = next_symbol_text ();
+ if (*p == '\\' || (*p == '?' && p[1] == '\0'))
+ p = next_symbol_text (objfile);
/* Point to the character after the name
of the enum constant. */
;
/* Note that the value doesn't matter for
enum constants in psymtabs, just in symtabs. */
- ADD_PSYMBOL_TO_LIST (p, q - p,
+ add_psymbol_to_list (p, q - p,
VAR_NAMESPACE, LOC_CONST,
- objfile->static_psymbols, 0,
- psymtab_language, objfile);
+ &objfile->static_psymbols, 0,
+ 0, psymtab_language, objfile);
/* Point past the name. */
p = q;
/* Skip over the value. */
continue;
case 'c':
/* Constant, e.g. from "const" in Pascal. */
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ add_psymbol_to_list (namestring, p - namestring,
VAR_NAMESPACE, LOC_CONST,
- objfile->static_psymbols, CUR_SYMBOL_VALUE,
- psymtab_language, objfile);
+ &objfile->static_psymbols, CUR_SYMBOL_VALUE,
+ 0, psymtab_language, objfile);
continue;
case 'f':
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
#ifdef DBXREAD_ONLY
+ /* Keep track of the start of the last function so we
+ can handle end of function symbols. */
+ last_function_start = CUR_SYMBOL_VALUE;
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
- if (pst && pst->textlow == 0)
- pst->textlow = CUR_SYMBOL_VALUE;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* 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 && textlow_not_set)
+ {
+ pst->textlow =
+ find_stab_function_addr (namestring, pst, objfile);
+ textlow_not_set = 0;
+ }
+#endif
#if 0
if (startup_file_end == 0)
startup_file_end = CUR_SYMBOL_VALUE;
#endif
/* End kludge. */
+
+ /* In reordered executables this function may lie outside
+ the bounds created by N_SO symbols. If that's the case
+ use the address of this function as the low bound for
+ the partial symbol table. */
+ if (textlow_not_set
+ || (CUR_SYMBOL_VALUE < pst->textlow
+ && CUR_SYMBOL_VALUE
+ != ANOFFSET (section_offsets, SECT_OFF_TEXT)))
+ {
+ pst->textlow = CUR_SYMBOL_VALUE;
+ textlow_not_set = 0;
+ }
#endif /* DBXREAD_ONLY */
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ add_psymbol_to_list (namestring, p - namestring,
VAR_NAMESPACE, LOC_BLOCK,
- objfile->static_psymbols, CUR_SYMBOL_VALUE,
- psymtab_language, objfile);
+ &objfile->static_psymbols, CUR_SYMBOL_VALUE,
+ 0, psymtab_language, objfile);
continue;
/* Global functions were ignored here, but now they
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
+ /* Keep track of the start of the last function so we
+ can handle end of function symbols. */
+ last_function_start = CUR_SYMBOL_VALUE;
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
- if (pst && pst->textlow == 0)
- pst->textlow = CUR_SYMBOL_VALUE;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* 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 && textlow_not_set)
+ {
+ pst->textlow =
+ find_stab_function_addr (namestring, pst, objfile);
+ textlow_not_set = 0;
+ }
+#endif
#if 0
if (startup_file_end == 0)
startup_file_end = CUR_SYMBOL_VALUE;
#endif
/* End kludge. */
+ /* In reordered executables this function may lie outside
+ the bounds created by N_SO symbols. If that's the case
+ use the address of this function as the low bound for
+ the partial symbol table. */
+ if (textlow_not_set
+ || (CUR_SYMBOL_VALUE < pst->textlow
+ && CUR_SYMBOL_VALUE
+ != ANOFFSET (section_offsets, SECT_OFF_TEXT)))
+ {
+ pst->textlow = CUR_SYMBOL_VALUE;
+ textlow_not_set = 0;
+ }
#endif /* DBXREAD_ONLY */
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+ add_psymbol_to_list (namestring, p - namestring,
VAR_NAMESPACE, LOC_BLOCK,
- objfile->global_psymbols, CUR_SYMBOL_VALUE,
- psymtab_language, objfile);
+ &objfile->global_psymbols, CUR_SYMBOL_VALUE,
+ 0, psymtab_language, objfile);
continue;
/* Two things show up here (hopefully); static symbols of
case '7':
case '8':
case '9':
+ case '-':
+ /* added to support cfront stabs strings */
+ case 'Z': /* for definition continuations */
+ case 'P': /* for prototypes */
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;
+ case N_ENDM:
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Solaris 2 end of module, finish current partial symbol table.
+ END_PSYMTAB will set pst->texthigh to the proper value, which
+ is necessary if a module compiled without debugging info
+ follows this module. */
+ if (pst)
+ {
+ END_PSYMTAB (pst, psymtab_include_list, includes_used,
+ symnum * symbol_size,
+ (CORE_ADDR) 0,
+ dependency_list, dependencies_used, textlow_not_set);
+ pst = (struct partial_symtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ }
+#endif
+ continue;
+
case N_RBRAC:
#ifdef HANDLE_RBRAC
HANDLE_RBRAC(CUR_SYMBOL_VALUE);
case N_OBJ: /* useless types from Solaris */
case N_OPT:
- case N_ENDM:
/* These symbols aren't interesting; don't worry about them */
continue;
projects / binutils.git / blobdiff