/* Shared code to pre-read a stab (dbx-style), when building a psymtab.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992 Free Software Foundation,
- Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
+ Free Software Foundation, Inc.
This file is part of GDB.
case N_TEXT | N_EXT:
case N_NBTEXT | N_EXT:
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+ goto record_it;
+
+ case N_DATA | N_EXT:
case N_NBDATA | N_EXT:
+ 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:
+ case N_SETV | N_EXT: /* FIXME, is this in BSS? */
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_BSS);
+ goto record_it;
+
case N_ABS | N_EXT:
- case N_DATA | N_EXT:
- case N_BSS | N_EXT:
+ record_it:
#ifdef DBXREAD_ONLY
-
- CUR_SYMBOL_VALUE += addr; /* Relocate */
-
SET_NAMESTRING();
bss_ext_symbol:
case N_FN_SEQ:
case N_TEXT:
#ifdef DBXREAD_ONLY
- CUR_SYMBOL_VALUE += addr; /* Relocate */
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
SET_NAMESTRING();
if ((namestring[0] == '-' && namestring[1] == 'l')
|| (namestring [(nsl = strlen (namestring)) - 1] == 'o'
&& namestring [nsl - 2] == '.')
-#ifdef hp9000s800
+#ifdef GDB_TARGET_IS_HPPA
/* some cooperation from gcc to get around ld stupidity */
- || (namestring[0] == 'e' && !strcmp (namestring, "end_file."))
+ || (namestring[0] == 'e' && STREQ (namestring, "end_file."))
#endif
)
{
-#ifndef hp9000s800
+#ifndef GDB_TARGET_IS_HPPA
if (objfile -> ei.entry_point < CUR_SYMBOL_VALUE &&
- objfile -> ei.entry_point >= last_o_file_start &&
- addr == 0) /* FIXME nogood nomore */
+ 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;
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 += addr; /* Relocate */
- 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.
- Same with virtual function tables, both global and static. */
- if ((namestring[8] == 'C' && (strcmp ("__DYNAMIC", namestring) == 0))
- || VTBL_PREFIX_P ((namestring+HASH_OFFSET)))
- {
- /* Not really a function here, but... */
- record_minimal_symbol (namestring, CUR_SYMBOL_VALUE,
- CUR_SYMBOL_TYPE, objfile); /* Always */
- }
-#endif /* DBXREAD_ONLY */
- continue;
+ CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_DATA);
+ 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;
*/
case N_SO: {
- unsigned long valu = CUR_SYMBOL_VALUE;
- static int last_so_symnum = -10;
- static int dir_so_symnum = -10;
- int tmp;
+ unsigned long valu;
+ static int prev_so_symnum = -10;
+ static int first_so_symnum;
char *p;
-
- /* End the current partial symtab and start a new one */
- SET_NAMESTRING();
+ valu = CUR_SYMBOL_VALUE + ANOFFSET (section_offsets, SECT_OFF_TEXT);
+
+ past_first_source_file = 1;
- valu += addr; /* Relocate */
+ if (prev_so_symnum != symnum - 1)
+ { /* Here if prev stab wasn't N_SO */
+ first_so_symnum = symnum;
- if (pst)
- {
- END_PSYMTAB (pst, psymtab_include_list, includes_used,
- symnum * symbol_size, valu,
- dependency_list, dependencies_used);
- pst = (struct partial_symtab *) 0;
- includes_used = 0;
- dependencies_used = 0;
+ if (pst)
+ {
+ END_PSYMTAB (pst, psymtab_include_list, includes_used,
+ symnum * symbol_size, valu,
+ dependency_list, dependencies_used);
+ pst = (struct partial_symtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ }
}
+ prev_so_symnum = symnum;
+
+ /* End the current partial symtab and start a new one */
+
+ SET_NAMESTRING();
+
/* 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 '/',
p = strrchr (namestring, '/');
if (p && *(p+1) == '\000')
- {
- dir_so_symnum = symnum;
- continue; /* Simply ignore directory name SOs */
- }
+ continue; /* Simply ignore directory name SOs */
/* Some other compilers (C++ ones in particular) emit useless
- SOs for non-existant .c files. */
-
- if (last_so_symnum == symnum - 1)
- continue; /* Ignore repeated SOs */
- last_so_symnum = symnum;
-
- past_first_source_file = 1;
-
- if (dir_so_symnum == symnum - 1) /* Was prev. SO a directory? */
- tmp = dir_so_symnum;
- else
- tmp = symnum;
- pst = START_PSYMTAB (objfile, addr,
- namestring, valu,
- tmp * symbol_size,
- objfile -> global_psymbols.next,
- objfile -> static_psymbols.next);
- dir_so_symnum = -10;
+ SOs for non-existant .c files. We ignore all subsequent SOs that
+ immediately follow the first. */
+
+ if (!pst)
+ pst = START_PSYMTAB (objfile, section_offsets,
+ namestring, valu,
+ first_so_symnum * symbol_size,
+ objfile -> global_psymbols.next,
+ objfile -> static_psymbols.next);
continue;
}
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 */
-
- SET_NAMESTRING();
-
- add_bincl_to_list (pst, namestring, CUR_SYMBOL_VALUE);
+ 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 */
- /* Mark down an include file in the current psymtab */
+ SET_NAMESTRING();
- psymtab_include_list[includes_used++] = namestring;
- if (includes_used >= includes_allocated)
- {
- char **orig = psymtab_include_list;
+ tmp_language = deduce_language_from_filename (namestring);
- psymtab_include_list = (char **)
- alloca ((includes_allocated *= 2) *
- sizeof (char *));
- memcpy ((PTR)psymtab_include_list, (PTR)orig,
- includes_used * sizeof (char *));
- }
+ /* 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;
-#endif /* DBXREAD_ONLY */
- continue;
+ add_bincl_to_list (pst, namestring, CUR_SYMBOL_VALUE);
- case N_SOL:
- /* Mark down an include file in the current psymtab */
+ /* Mark down an include file in the current psymtab */
- SET_NAMESTRING();
+ goto record_include_file;
- /* 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 && !strcmp (namestring, pst->filename))
+#else /* DBXREAD_ONLY */
continue;
- {
- register int i;
- for (i = 0; i < includes_used; i++)
- if (!strcmp (namestring, psymtab_include_list[i]))
- {
- i = -1;
- break;
- }
- if (i == -1)
- continue;
+#endif
}
- psymtab_include_list[includes_used++] = namestring;
- if (includes_used >= includes_allocated)
+ case N_SOL:
+ {
+ 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;
{
- 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 " */
+ case N_ROSYM: /* Read-only data seg var -- static. */
case N_NBSTS: /* Gould nobase. */
case N_NBLCS: /* symbols. */
+ case N_FUN:
+ case N_GSYM: /* Global (extern) variable; can be
+ data or bss (sigh FIXME). */
+
+ /* Following may probably be ignored; I'll leave them here
+ for now (until I do Pascal and Modula 2 extensions). */
+
+ case N_PC: /* I may or may not need this; I
+ suspect not. */
+ case N_M2C: /* I suspect that I can ignore this here. */
+ case N_SCOPE: /* Same. */
SET_NAMESTRING();
p = (char *) strchr (namestring, ':');
+ if (!p)
+ continue; /* Not a debugging symbol. */
+
- /* Skip if there is no :. */
- if (!p) continue;
+
+ /* Main processing section for debugging symbols which
+ the initial read through the symbol tables needs to worry
+ about. If we reach this point, the symbol which we are
+ considering is definitely one we are interested in.
+ p must also contain the (valid) index into the namestring
+ which indicates the debugging type symbol. */
switch (p[1])
{
+ 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);
+ 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);
+ continue;
+
case 'T':
if (p != namestring) /* a name is there, not just :T... */
{
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
STRUCT_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
+ objfile->static_psymbols,
+ CUR_SYMBOL_VALUE,
+ psymtab_language, objfile);
if (p[2] == 't')
{
/* Also a typedef with the same name. */
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
+ objfile->static_psymbols,
+ CUR_SYMBOL_VALUE, 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, psymtab_language,
+ objfile);
+ }
}
goto check_enum;
case 't':
{
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
+ objfile->static_psymbols,
+ CUR_SYMBOL_VALUE,
+ psymtab_language, objfile);
}
check_enum:
/* If this is an enumerated type, we need to
"enum {a, b} c;" in C, but fortunately those are
rare. There is no way for GDB to find those from the
enum type without spending too much time on it. Thus
- to solve this problem, the compiler needs to put out separate
- constant symbols ('c' N_LSYMS) for enum constants in
- enums without names, or put out a dummy type. */
+ to solve this problem, the compiler needs to put out the
+ enum in a nameless type. GCC2 does this. */
/* We are looking for something of the form
<name> ":" ("t" | "T") [<number> "="] "e"
enum constants in psymtabs, just in symtabs. */
ADD_PSYMBOL_TO_LIST (p, q - p,
VAR_NAMESPACE, LOC_CONST,
- objfile->static_psymbols, 0);
+ objfile->static_psymbols, 0,
+ psymtab_language, objfile);
/* Point past the name. */
p = q;
/* Skip over the value. */
/* Constant, e.g. from "const" in Pascal. */
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_CONST,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
- continue;
- default:
- /* Skip if the thing following the : is
- not a letter (which indicates declaration of a local
- variable, which we aren't interested in). */
- continue;
- }
-
- case N_FUN:
- case N_GSYM: /* Global (extern) variable; can be
- data or bss (sigh). */
-
- /* Following may probably be ignored; I'll leave them here
- for now (until I do Pascal and Modula 2 extensions). */
-
- case N_PC: /* I may or may not need this; I
- suspect not. */
- case N_M2C: /* I suspect that I can ignore this here. */
- case N_SCOPE: /* Same. */
-
- SET_NAMESTRING();
-
- p = (char *) strchr (namestring, ':');
- if (!p)
- continue; /* Not a debugging symbol. */
-
-
-
- /* Main processing section for debugging symbols which
- the initial read through the symbol tables needs to worry
- about. If we reach this point, the symbol which we are
- considering is definitely one we are interested in.
- p must also contain the (valid) index into the namestring
- which indicates the debugging type symbol. */
-
- switch (p[1])
- {
- case 'c':
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
- VAR_NAMESPACE, LOC_CONST,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
- continue;
- case 'S':
- CUR_SYMBOL_VALUE += addr; /* Relocate */
- ADD_PSYMBOL_ADDR_TO_LIST (namestring, p - namestring,
- VAR_NAMESPACE, LOC_STATIC,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
- continue;
- case 'G':
- CUR_SYMBOL_VALUE += addr; /* Relocate */
- /* 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);
- continue;
-
- case 't':
- ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
- VAR_NAMESPACE, LOC_TYPEDEF,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
+ objfile->static_psymbols, CUR_SYMBOL_VALUE,
+ psymtab_language, objfile);
continue;
case 'f':
#ifdef DBXREAD_ONLY
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
- if (pst->textlow == 0)
+ if (pst && pst->textlow == 0)
pst->textlow = CUR_SYMBOL_VALUE;
#if 0
if (startup_file_end == 0)
#endif /* DBXREAD_ONLY */
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_BLOCK,
- objfile->static_psymbols, CUR_SYMBOL_VALUE);
+ objfile->static_psymbols, CUR_SYMBOL_VALUE,
+ 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 misc fn vector...
- FIXME, why did it used to ignore these? That broke
- "i fun" on these functions. */
+ They're also in the minimal symbol table. */
case 'F':
#ifdef DBXREAD_ONLY
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
- if (pst->textlow == 0)
+ if (pst && pst->textlow == 0)
pst->textlow = CUR_SYMBOL_VALUE;
#if 0
if (startup_file_end == 0)
#endif /* DBXREAD_ONLY */
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_BLOCK,
- objfile->global_psymbols, CUR_SYMBOL_VALUE);
+ objfile->global_psymbols, CUR_SYMBOL_VALUE,
+ psymtab_language, objfile);
continue;
/* Two things show up here (hopefully); static symbols of
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;
}
case N_EXCL:
(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
}
case N_NSYMS: /* Ultrix 4.0: symbol count */
case N_DEFD: /* GNU Modula-2 */
- case N_OBJ: /* two useless types from Solaris */
+ case N_OBJ: /* useless types from Solaris */
case N_OPT:
+ case N_ENDM:
/* These symbols aren't interesting; don't worry about them */
continue;
default:
/* If we haven't found it yet, ignore it. It's probably some
new type we don't know about yet. */
- complain (&unknown_symtype_complaint, local_hex_string(CUR_SYMBOL_TYPE));
+ complain (&unknown_symtype_complaint,
+ local_hex_string ((unsigned long) CUR_SYMBOL_TYPE));
continue;
}
projects / deliverable / binutils-gdb.git / blobdiff