@@ -57,12 +57,6 @@
/* Required for the following registry. */
#include "gdb-stabs.h"
-#define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private))
-#define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size)
-#define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset)
-#define STRING_OFFSET(p) (SYMLOC(p)->string_offset)
-#define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset)
-#define PST_LANGUAGE(p) (SYMLOC(p)->pst_language)
/* find_text_range --- find start and end of loadable code sections
@@ -115,24 +109,6 @@ find_text_range (bfd * sym_bfd, struct objfile *objfile)
/* Local function prototypes. */
-static void read_ofile_symtab (struct objfile *, legacy_psymtab *);
-
-static void dbx_read_symtab (legacy_psymtab *self,
- struct objfile *objfile);
-
-static void dbx_expand_psymtab (legacy_psymtab *, struct objfile *);
-
-static void read_dbx_symtab (minimal_symbol_reader &, psymtab_storage *,
- struct objfile *);
-
-static legacy_psymtab *find_corresponding_bincl_psymtab (const char *,
- int,
- struct objfile *);
-
-static const char *dbx_next_symbol_text (struct objfile *);
-
-static void fill_symbuf (bfd *, struct objfile *);
-
static void dbx_symfile_init (struct objfile *);
static void dbx_new_init (struct objfile *);
@@ -141,12 +117,6 @@ static void dbx_symfile_read (struct objfile *, symfile_add_flags);
static void dbx_symfile_finish (struct objfile *);
-static void record_minimal_symbol (minimal_symbol_reader &,
- const char *, unrelocated_addr, int,
- struct objfile *);
-
-static legacy_psymtab *start_psymtab (psymtab_storage *, struct objfile *,
- const char *, unrelocated_addr, int);
#if 0
static struct type **
@@ -166,92 +136,6 @@ explicit_lookup_type (int real_filenum, int index)
}
#endif
-static void
-record_minimal_symbol (minimal_symbol_reader &reader,
- const char *name, unrelocated_addr address, int type,
- struct objfile *objfile)
-{
- enum minimal_symbol_type ms_type;
- int section;
- struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
-
- switch (type)
- {
- case N_TEXT | N_EXT:
- ms_type = mst_text;
- section = SECT_OFF_TEXT (objfile);
- break;
- case N_DATA | N_EXT:
- ms_type = mst_data;
- section = SECT_OFF_DATA (objfile);
- break;
- case N_BSS | N_EXT:
- ms_type = mst_bss;
- section = SECT_OFF_BSS (objfile);
- break;
- case N_ABS | N_EXT:
- ms_type = mst_abs;
- section = -1;
- break;
-#ifdef N_SETV
- case N_SETV | N_EXT:
- ms_type = mst_data;
- section = SECT_OFF_DATA (objfile);
- break;
- case N_SETV:
- /* I don't think this type actually exists; since a N_SETV is the result
- of going over many .o files, it doesn't make sense to have one
- file local. */
- ms_type = mst_file_data;
- section = SECT_OFF_DATA (objfile);
- break;
-#endif
- case N_TEXT:
- case N_NBTEXT:
- case N_FN:
- case N_FN_SEQ:
- ms_type = mst_file_text;
- section = SECT_OFF_TEXT (objfile);
- break;
- case N_DATA:
- ms_type = mst_file_data;
-
- /* Check for __DYNAMIC, which is used by Sun shared libraries.
- Record it as global even if it's local, not global, so
- lookup_minimal_symbol can find it. We don't check symbol_leading_char
- because for SunOS4 it always is '_'. */
- if (strcmp ("__DYNAMIC", name) == 0)
- ms_type = mst_data;
-
- /* Same with virtual function tables, both global and static. */
- {
- const char *tempstring = name;
-
- if (*tempstring != '\0'
- && *tempstring == bfd_get_symbol_leading_char (objfile->obfd.get ()))
- ++tempstring;
- if (is_vtable_name (tempstring))
- ms_type = mst_data;
- }
- section = SECT_OFF_DATA (objfile);
- break;
- case N_BSS:
- ms_type = mst_file_bss;
- section = SECT_OFF_BSS (objfile);
- break;
- default:
- ms_type = mst_unknown;
- section = -1;
- break;
- }
-
- if ((ms_type == mst_file_text || ms_type == mst_text)
- && address < key->ctx.lowest_text_address)
- key->ctx.lowest_text_address = address;
-
- reader.record_with_info (name, address, ms_type, section);
-}
-
/* Scan and build partial symbols for a symbol file.
We have been initialized by a call to dbx_symfile_init, which
put all the relevant info into a "struct dbx_symfile_info",
@@ -288,7 +172,7 @@ dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
psymbol_functions *psf = new psymbol_functions ();
psymtab_storage *partial_symtabs = psf->get_partial_symtabs ().get ();
objfile->qf.emplace_front (psf);
- read_dbx_symtab (reader, partial_symtabs, objfile);
+ read_stabs_symtab (reader, partial_symtabs, objfile);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
@@ -444,1444 +328,6 @@ dbx_symfile_finish (struct objfile *objfile)
-/* Buffer for reading the symbol table entries. */
-static struct external_nlist symbuf[4096];
-static int symbuf_idx;
-static int symbuf_end;
-
-/* Refill the symbol table input buffer
- and set the variables that control fetching entries from it.
- Reports an error if no data available.
- This function can read past the end of the symbol table
- (into the string table) but this does no harm. */
-
-static void
-fill_symbuf (bfd *sym_bfd, struct objfile *objfile)
-{
- unsigned int count;
- int nbytes;
- struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
-
- if (key->ctx.stabs_data)
- {
- nbytes = sizeof (symbuf);
- if (nbytes > key->ctx.symbuf_left)
- nbytes = key->ctx.symbuf_left;
- memcpy (symbuf, key->ctx.stabs_data + key->ctx.symbuf_read, nbytes);
- }
- else if (key->ctx.symbuf_sections == NULL)
- {
- count = sizeof (symbuf);
- nbytes = bfd_read (symbuf, count, sym_bfd);
- }
- else
- {
- if (key->ctx.symbuf_left <= 0)
- {
- file_ptr filepos = (*key->ctx.symbuf_sections)[key->ctx.sect_idx]->filepos;
-
- if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0)
- perror_with_name (bfd_get_filename (sym_bfd));
- key->ctx.symbuf_left = bfd_section_size ((*key->ctx.symbuf_sections)[key->ctx.sect_idx]);
- key->ctx.symbol_table_offset = filepos - key->ctx.symbuf_read;
- ++key->ctx.sect_idx;
- }
-
- count = key->ctx.symbuf_left;
- if (count > sizeof (symbuf))
- count = sizeof (symbuf);
- nbytes = bfd_read (symbuf, count, sym_bfd);
- }
-
- if (nbytes < 0)
- perror_with_name (bfd_get_filename (sym_bfd));
- else if (nbytes == 0)
- error (_("Premature end of file reading symbol table"));
- symbuf_end = nbytes / key->ctx.symbol_size;
- symbuf_idx = 0;
- key->ctx.symbuf_left -= nbytes;
- key->ctx.symbuf_read += nbytes;
-}
-
-static void
-stabs_seek (int sym_offset, struct objfile *objfile)
-{
- dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
- if (key->ctx.stabs_data)
- {
- key->ctx.symbuf_read += sym_offset;
- key->ctx.symbuf_left -= sym_offset;
- }
- else
- if (bfd_seek (objfile->obfd.get (), sym_offset, SEEK_CUR) != 0)
- perror_with_name (bfd_get_filename (objfile->obfd.get ()));
-}
-
-#define INTERNALIZE_SYMBOL(intern, extern, abfd) \
- { \
- (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \
- (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \
- (intern).n_other = 0; \
- (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \
- if (bfd_get_sign_extend_vma (abfd)) \
- (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \
- else \
- (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \
- }
-
-/* Invariant: The symbol pointed to by symbuf_idx is the first one
- that hasn't been swapped. Swap the symbol at the same time
- that symbuf_idx is incremented. */
-
-/* dbx allows the text of a symbol name to be continued into the
- next symbol name! When such a continuation is encountered
- (a \ at the end of the text of a name)
- call this function to get the continuation. */
-
-static const char *
-dbx_next_symbol_text (struct objfile *objfile)
-{
- struct internal_nlist nlist;
-
- if (symbuf_idx == symbuf_end)
- fill_symbuf (objfile->obfd.get (), objfile);
-
- symnum++;
- INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], objfile->obfd.get ());
- OBJSTAT (objfile, n_stabs++);
-
- symbuf_idx++;
-
- return nlist.n_strx
- + dbx_objfile_data_key.get (objfile)->ctx.stringtab_global
- + dbx_objfile_data_key.get (objfile)->ctx.file_string_table_offset;
-}
-
-
-/* Given a name, value pair, find the corresponding
- bincl in the list. Return the partial symtab associated
- with that header_file_location. */
-
-static legacy_psymtab *
-find_corresponding_bincl_psymtab (const char *name, int instance,
- struct objfile* objfile)
-{
- stabsread_context ctx = dbx_objfile_data_key.get (objfile) -> ctx;
- for (const header_file_location &bincl : ctx.bincl_list)
- if (bincl.instance == instance
- && strcmp (name, bincl.name) == 0)
- return bincl.pst;
-
- repeated_header_complaint (name, symnum);
- return (legacy_psymtab *) 0;
-}
-
-/* Set namestring based on nlist. If the string table index is invalid,
- give a fake name, and print a single error message per symbol file read,
- rather than abort the symbol reading or flood the user with messages. */
-
-static const char *
-set_namestring (struct objfile *objfile, const struct internal_nlist *nlist)
-{
- const char *namestring;
- struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
-
- if (nlist->n_strx + key->ctx.file_string_table_offset
- >= DBX_STRINGTAB_SIZE (objfile)
- || nlist->n_strx + key->ctx.file_string_table_offset < nlist->n_strx)
- {
- complaint (_("bad string table offset in symbol %d"),
- symnum);
- namestring = "<bad string table offset>";
- }
- else
- namestring = (nlist->n_strx + key->ctx.file_string_table_offset
- + DBX_STRINGTAB (objfile));
- return namestring;
-}
-
-static void
-function_outside_compilation_unit_complaint (const char *arg1)
-{
- complaint (_("function `%s' appears to be defined "
- "outside of all compilation units"),
- arg1);
-}
-
-/* Setup partial_symtab's describing each source file for which
- debugging information is available. */
-
-static void
-read_dbx_symtab (minimal_symbol_reader &reader,
- psymtab_storage *partial_symtabs,
- struct objfile *objfile)
-{
- struct gdbarch *gdbarch = objfile->arch ();
- struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */
- struct internal_nlist nlist;
- CORE_ADDR text_addr;
- int text_size;
- const char *sym_name;
- int sym_len;
- unsigned int next_file_string_table_offset = 0;
- struct dbx_symfile_info *dbx = dbx_objfile_data_key.get(objfile);
-
- const char *namestring;
- int nsl;
- int past_first_source_file = 0;
- CORE_ADDR last_function_start = 0;
- bfd *abfd;
- int textlow_not_set;
- int data_sect_index;
-
- /* Current partial symtab. */
- legacy_psymtab *pst;
-
- /* List of current psymtab's include files. */
- const char **psymtab_include_list;
- int includes_allocated;
- int includes_used;
-
- /* Index within current psymtab dependency list. */
- legacy_psymtab **dependency_list;
- int dependencies_used, dependencies_allocated;
-
- text_addr = DBX_TEXT_ADDR (objfile);
- text_size = DBX_TEXT_SIZE (objfile);
-
- /* FIXME. We probably want to change stringtab_global rather than add this
- while processing every symbol entry. FIXME. */
- dbx->ctx.file_string_table_offset = 0;
-
- dbx->ctx.stringtab_global = DBX_STRINGTAB (objfile);
-
- pst = (legacy_psymtab *) 0;
-
- includes_allocated = 30;
- includes_used = 0;
- psymtab_include_list = (const char **) alloca (includes_allocated *
- sizeof (const char *));
-
- dependencies_allocated = 30;
- dependencies_used = 0;
- dependency_list =
- (legacy_psymtab **) alloca (dependencies_allocated *
- sizeof (legacy_psymtab *));
-
- /* Init bincl list */
- std::vector<struct header_file_location> bincl_storage;
- scoped_restore restore_bincl_global
- = make_scoped_restore (&(dbx->ctx.bincl_list), bincl_storage);
-
- set_last_source_file (NULL);
-
- dbx->ctx.lowest_text_address = (unrelocated_addr) -1;
-
- abfd = objfile->obfd.get ();
- symbuf_end = symbuf_idx = 0;
- next_symbol_text_func = dbx_next_symbol_text;
- textlow_not_set = 1;
- dbx->ctx.has_line_numbers = 0;
-
- /* FIXME: jimb/2003-09-12: We don't apply the right section's offset
- to global and static variables. The stab for a global or static
- variable doesn't give us any indication of which section it's in,
- so we can't tell immediately which offset in
- objfile->section_offsets we should apply to the variable's
- address.
-
- We could certainly find out which section contains the variable
- by looking up the variable's unrelocated address with
- find_pc_section, but that would be expensive; this is the
- function that constructs the partial symbol tables by examining
- every symbol in the entire executable, and it's
- performance-critical. So that expense would not be welcome. I'm
- not sure what to do about this at the moment.
-
- What we have done for years is to simply assume that the .data
- section's offset is appropriate for all global and static
- variables. Recently, this was expanded to fall back to the .bss
- section's offset if there is no .data section, and then to the
- .rodata section's offset. */
- data_sect_index = objfile->sect_index_data;
- if (data_sect_index == -1)
- data_sect_index = SECT_OFF_BSS (objfile);
- if (data_sect_index == -1)
- data_sect_index = SECT_OFF_RODATA (objfile);
-
- /* If data_sect_index is still -1, that's okay. It's perfectly fine
- for the file to have no .data, no .bss, and no .text at all, if
- it also has no global or static variables. */
-
- for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++)
- {
- /* Get the symbol for this run and pull out some info. */
- QUIT; /* Allow this to be interruptable. */
- if (symbuf_idx == symbuf_end)
- fill_symbuf (abfd, objfile);
- bufp = &symbuf[symbuf_idx++];
-
- /*
- * Special case to speed up readin.
- */
- if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE)
- {
- dbx->ctx.has_line_numbers = 1;
- continue;
- }
-
- INTERNALIZE_SYMBOL (nlist, bufp, abfd);
- OBJSTAT (objfile, n_stabs++);
-
- /* Ok. There is a lot of code duplicated in the rest of this
- switch statement (for efficiency reasons). Since I don't
- like duplicating code, I will do my penance here, and
- describe the code which is duplicated:
-
- *) The assignment to namestring.
- *) The call to strchr.
- *) The addition of a partial symbol the two partial
- symbol lists. This last is a large section of code, so
- I've embedded it in the following macro. */
-
- switch (nlist.n_type)
- {
- /*
- * Standard, external, non-debugger, symbols
- */
-
- case N_TEXT | N_EXT:
- case N_NBTEXT | N_EXT:
- goto record_it;
-
- case N_DATA | N_EXT:
- case N_NBDATA | N_EXT:
- 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? */
- goto record_it;
-
- case N_ABS | N_EXT:
- record_it:
- namestring = set_namestring (objfile, &nlist);
-
- record_minimal_symbol (reader, namestring,
- unrelocated_addr (nlist.n_value),
- nlist.n_type, objfile); /* Always */
- continue;
-
- /* Standard, local, non-debugger, symbols. */
-
- case N_NBTEXT:
-
- /* We need to be able to deal with both N_FN or N_TEXT,
- because we have no way of knowing whether the sys-supplied ld
- or GNU ld was used to make the executable. Sequents throw
- in another wrinkle -- they renumbered N_FN. */
-
- case N_FN:
- case N_FN_SEQ:
- case N_TEXT:
- namestring = set_namestring (objfile, &nlist);
-
- if ((namestring[0] == '-' && namestring[1] == 'l')
- || (namestring[(nsl = strlen (namestring)) - 1] == 'o'
- && namestring[nsl - 2] == '.'))
- {
- unrelocated_addr unrel_val = unrelocated_addr (nlist.n_value);
-
- if (past_first_source_file && pst
- /* The gould NP1 uses low values for .o and -l symbols
- which are not the address. */
- && unrel_val >= pst->unrelocated_text_low ())
- {
- stabs_end_psymtab (objfile, partial_symtabs,
- pst, psymtab_include_list,
- includes_used, symnum * dbx->ctx.symbol_size,
- unrel_val > pst->unrelocated_text_high ()
- ? unrel_val : pst->unrelocated_text_high (),
- dependency_list, dependencies_used,
- textlow_not_set);
- pst = (legacy_psymtab *) 0;
- includes_used = 0;
- dependencies_used = 0;
- dbx->ctx.has_line_numbers = 0;
- }
- else
- past_first_source_file = 1;
- }
- else
- goto record_it;
- continue;
-
- case N_DATA:
- goto record_it;
-
- case N_UNDF | N_EXT:
- /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol.
- We used to rely on the target to tell us whether it knows
- where the symbol has been relocated to, but none of the
- target implementations actually provided that operation.
- So we just ignore the symbol, the same way we would do if
- we had a target-side symbol lookup which returned no match.
-
- All other symbols (with nlist.n_value == 0), are really
- undefined, and so we ignore them too. */
- continue;
-
- case N_UNDF:
- if (dbx->ctx.processing_acc_compilation && nlist.n_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,
- we must adjust file_string_table_offset *before* calling
- set_namestring(). */
- past_first_source_file = 1;
- dbx->ctx.file_string_table_offset = next_file_string_table_offset;
- next_file_string_table_offset =
- dbx->ctx.file_string_table_offset + nlist.n_value;
- if (next_file_string_table_offset < dbx->ctx.file_string_table_offset)
- error (_("string table offset backs up at %d"), symnum);
- /* FIXME -- replace error() with complaint. */
- continue;
- }
- continue;
-
- /* Lots of symbol types we can just ignore. */
-
- case N_ABS:
- case N_NBDATA:
- case N_NBBSS:
- continue;
-
- /* Keep going . . . */
-
- /*
- * Special symbol types for GNU
- */
- case N_INDR:
- case N_INDR | N_EXT:
- case N_SETA:
- case N_SETA | N_EXT:
- case N_SETT:
- case N_SETT | N_EXT:
- case N_SETD:
- case N_SETD | N_EXT:
- case N_SETB:
- case N_SETB | N_EXT:
- case N_SETV:
- continue;
-
- /*
- * Debugger symbols
- */
-
- case N_SO:
- {
- CORE_ADDR valu;
- static int prev_so_symnum = -10;
- static int first_so_symnum;
- const char *p;
- static const char *dirname_nso;
- int prev_textlow_not_set;
-
- valu = nlist.n_value;
-
- prev_textlow_not_set = textlow_not_set;
-
- /* A zero value is probably an indication for the SunPRO 3.0
- compiler. stabs_end_psymtab explicitly tests for zero, so
- don't relocate it. */
-
- if (nlist.n_value == 0
- && gdbarch_sofun_address_maybe_missing (gdbarch))
- {
- textlow_not_set = 1;
- valu = 0;
- }
- else
- textlow_not_set = 0;
-
- past_first_source_file = 1;
-
- if (prev_so_symnum != symnum - 1)
- { /* Here if prev stab wasn't N_SO. */
- first_so_symnum = symnum;
-
- if (pst)
- {
- unrelocated_addr unrel_value = unrelocated_addr (valu);
- stabs_end_psymtab (objfile, partial_symtabs,
- pst, psymtab_include_list,
- includes_used, symnum * dbx->ctx.symbol_size,
- unrel_value > pst->unrelocated_text_high ()
- ? unrel_value
- : pst->unrelocated_text_high (),
- dependency_list, dependencies_used,
- prev_textlow_not_set);
- pst = (legacy_psymtab *) 0;
- includes_used = 0;
- dependencies_used = 0;
- dbx->ctx.has_line_numbers = 0;
- }
- }
-
- prev_so_symnum = symnum;
-
- /* End the current partial symtab and start a new one. */
-
- namestring = set_namestring (objfile, &nlist);
-
- /* 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 '/',
- we assume the previous N_SO was a directory name. */
-
- p = lbasename (namestring);
- if (p != namestring && *p == '\000')
- {
- /* Save the directory name SOs locally, then save it into
- the psymtab when it's created below. */
- dirname_nso = namestring;
- continue;
- }
-
- /* Some other compilers (C++ ones in particular) emit useless
- SOs for non-existant .c files. We ignore all subsequent SOs
- that immediately follow the first. */
-
- if (!pst)
- {
- pst = start_psymtab (partial_symtabs, objfile,
- namestring,
- unrelocated_addr (valu),
- first_so_symnum * dbx->ctx.symbol_size);
- pst->dirname = dirname_nso;
- dirname_nso = NULL;
- }
- continue;
- }
-
- case N_BINCL:
- {
- 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. */
-
- namestring = set_namestring (objfile, &nlist);
- 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
- || dbx->ctx.psymtab_language != language_cplus))
- dbx->ctx.psymtab_language = tmp_language;
-
- if (pst == NULL)
- {
- /* FIXME: we should not get here without a PST to work on.
- Attempt to recover. */
- complaint (_("N_BINCL %s not in entries for "
- "any file, at symtab pos %d"),
- namestring, symnum);
- continue;
- }
- dbx->ctx.bincl_list.emplace_back (namestring, nlist.n_value, pst);
-
- /* Mark down an include file in the current psymtab. */
-
- goto record_include_file;
- }
-
- case N_SOL:
- {
- enum language tmp_language;
-
- /* Mark down an include file in the current psymtab. */
- namestring = set_namestring (objfile, &nlist);
- 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
- || dbx->ctx.psymtab_language != language_cplus))
- dbx->ctx.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 && filename_cmp (namestring, pst->filename) == 0)
- continue;
- {
- int i;
-
- for (i = 0; i < includes_used; i++)
- if (filename_cmp (namestring, psymtab_include_list[i]) == 0)
- {
- i = -1;
- break;
- }
- if (i == -1)
- continue;
- }
-
- record_include_file:
-
- psymtab_include_list[includes_used++] = namestring;
- if (includes_used >= includes_allocated)
- {
- const char **orig = psymtab_include_list;
-
- psymtab_include_list = (const char **)
- alloca ((includes_allocated *= 2) * sizeof (const char *));
- memcpy (psymtab_include_list, orig,
- includes_used * sizeof (const 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. */
- {
- const char *p;
-
- namestring = set_namestring (objfile, &nlist);
-
- /* See if this is an end of function stab. */
- if (pst && nlist.n_type == N_FUN && *namestring == '\000')
- {
- unrelocated_addr 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 = unrelocated_addr (nlist.n_value + last_function_start);
- if (pst->unrelocated_text_high () == unrelocated_addr (0)
- || valu > pst->unrelocated_text_high ())
- pst->set_text_high (valu);
- break;
- }
-
- p = (char *) strchr (namestring, ':');
- if (!p)
- continue; /* Not a debugging symbol. */
-
- sym_len = 0;
- sym_name = NULL; /* pacify "gcc -Werror" */
- if (dbx->ctx.psymtab_language == language_cplus)
- {
- std::string name (namestring, p - namestring);
- gdb::unique_xmalloc_ptr<char> new_name
- = cp_canonicalize_string (name.c_str ());
- if (new_name != nullptr)
- {
- sym_len = strlen (new_name.get ());
- sym_name = obstack_strdup (&objfile->objfile_obstack,
- new_name.get ());
- }
- }
- else if (dbx->ctx.psymtab_language == language_c)
- {
- std::string name (namestring, p - namestring);
- gdb::unique_xmalloc_ptr<char> new_name
- = c_canonicalize_name (name.c_str ());
- if (new_name != nullptr)
- {
- sym_len = strlen (new_name.get ());
- sym_name = obstack_strdup (&objfile->objfile_obstack,
- new_name.get ());
- }
- }
-
- if (sym_len == 0)
- {
- sym_name = namestring;
- sym_len = p - namestring;
- }
-
- /* 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':
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len), true,
- VAR_DOMAIN, LOC_STATIC,
- data_sect_index,
- psymbol_placement::STATIC,
- unrelocated_addr (nlist.n_value),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("static `%*s' appears to be defined "
- "outside of all compilation units"),
- sym_len, sym_name);
- continue;
-
- case 'G':
- /* The addresses in these entries are reported to be
- wrong. See the code that reads 'G's for symtabs. */
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len), true,
- VAR_DOMAIN, LOC_STATIC,
- data_sect_index,
- psymbol_placement::GLOBAL,
- unrelocated_addr (nlist.n_value),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("global `%*s' appears to be defined "
- "outside of all compilation units"),
- sym_len, sym_name);
- continue;
-
- case 'T':
- /* When a 'T' entry is defining an anonymous enum, it
- may have a name which is the empty string, or a
- single space. Since they're not really defining a
- symbol, those shouldn't go in the partial symbol
- table. We do pick up the elements of such enums at
- 'check_enum:', below. */
- if (p >= namestring + 2
- || (p == namestring + 1
- && namestring[0] != ' '))
- {
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len),
- true, STRUCT_DOMAIN, LOC_TYPEDEF, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("enum, struct, or union `%*s' appears "
- "to be defined outside of all "
- "compilation units"),
- sym_len, sym_name);
- if (p[2] == 't')
- {
- /* Also a typedef with the same name. */
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len),
- true, VAR_DOMAIN, LOC_TYPEDEF, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("typedef `%*s' appears to be defined "
- "outside of all compilation units"),
- sym_len, sym_name);
- p += 1;
- }
- }
- goto check_enum;
-
- case 't':
- if (p != namestring) /* a name is there, not just :T... */
- {
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len),
- true, VAR_DOMAIN, LOC_TYPEDEF, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("typename `%*s' appears to be defined "
- "outside of all compilation units"),
- sym_len, sym_name);
- }
- check_enum:
- /* If this is an enumerated type, we need to
- add all the enum constants to the partial symbol
- table. This does not cover enums without names, e.g.
- "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 the
- enum in a nameless type. GCC2 does this. */
-
- /* We are looking for something of the form
- <name> ":" ("t" | "T") [<number> "="] "e"
- {<constant> ":" <value> ","} ";". */
-
- /* Skip over the colon and the 't' or 'T'. */
- p += 2;
- /* This type may be given a number. Also, numbers can come
- in pairs like (0,26). Skip over it. */
- while ((*p >= '0' && *p <= '9')
- || *p == '(' || *p == ',' || *p == ')'
- || *p == '=')
- p++;
-
- 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.
- I don't know where that happens.
- Accept either. */
- while (*p && *p != ';' && *p != ',')
- {
- const char *q;
-
- /* Check for and handle cretinous dbx symbol name
- continuation! */
- if (*p == '\\' || (*p == '?' && p[1] == '\0'))
- p = next_symbol_text (objfile);
-
- /* Point to the character after the name
- of the enum constant. */
- for (q = p; *q && *q != ':'; q++)
- ;
- /* Note that the value doesn't matter for
- enum constants in psymtabs, just in symtabs. */
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (p, q - p), true,
- VAR_DOMAIN, LOC_CONST, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("enum constant `%*s' appears to be defined "
- "outside of all compilation units"),
- ((int) (q - p)), p);
- /* Point past the name. */
- p = q;
- /* Skip over the value. */
- while (*p && *p != ',')
- p++;
- /* Advance past the comma. */
- if (*p)
- p++;
- }
- }
- continue;
-
- case 'c':
- /* Constant, e.g. from "const" in Pascal. */
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len), true,
- VAR_DOMAIN, LOC_CONST, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- else
- complaint (_("constant `%*s' appears to be defined "
- "outside of all compilation units"),
- sym_len, sym_name);
-
- continue;
-
- case 'f':
- if (! pst)
- {
- std::string name (namestring, (p - namestring));
- function_outside_compilation_unit_complaint (name.c_str ());
- }
- /* Kludges for ELF/STABS with Sun ACC. */
- dbx->ctx.last_function_name = namestring;
- /* 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 (nlist.n_value == 0
- && gdbarch_sofun_address_maybe_missing (gdbarch))
- {
- bound_minimal_symbol minsym
- = find_stab_function (namestring,
- pst ? pst->filename : NULL, objfile);
- if (minsym.minsym != NULL)
- nlist.n_value
- = CORE_ADDR (minsym.minsym->unrelocated_address ());
- }
- if (pst && textlow_not_set
- && gdbarch_sofun_address_maybe_missing (gdbarch))
- {
- pst->set_text_low (unrelocated_addr (nlist.n_value));
- textlow_not_set = 0;
- }
- /* End kludge. */
-
- /* Keep track of the start of the last function so we
- can handle end of function symbols. */
- last_function_start = nlist.n_value;
-
- /* 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 (pst
- && (textlow_not_set
- || (unrelocated_addr (nlist.n_value)
- < pst->unrelocated_text_low ()
- && (nlist.n_value != 0))))
- {
- pst->set_text_low (unrelocated_addr (nlist.n_value));
- textlow_not_set = 0;
- }
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len), true,
- VAR_DOMAIN, LOC_BLOCK,
- SECT_OFF_TEXT (objfile),
- psymbol_placement::STATIC,
- unrelocated_addr (nlist.n_value),
- dbx->ctx.psymtab_language,
- partial_symtabs, 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':
- if (! pst)
- {
- std::string name (namestring, (p - namestring));
- function_outside_compilation_unit_complaint (name.c_str ());
- }
- /* Kludges for ELF/STABS with Sun ACC. */
- dbx->ctx.last_function_name = namestring;
- /* 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 (nlist.n_value == 0
- && gdbarch_sofun_address_maybe_missing (gdbarch))
- {
- bound_minimal_symbol minsym
- = find_stab_function (namestring,
- pst ? pst->filename : NULL, objfile);
- if (minsym.minsym != NULL)
- nlist.n_value
- = CORE_ADDR (minsym.minsym->unrelocated_address ());
- }
- if (pst && textlow_not_set
- && gdbarch_sofun_address_maybe_missing (gdbarch))
- {
- pst->set_text_low (unrelocated_addr (nlist.n_value));
- textlow_not_set = 0;
- }
- /* End kludge. */
-
- /* Keep track of the start of the last function so we
- can handle end of function symbols. */
- last_function_start = nlist.n_value;
-
- /* 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 (pst
- && (textlow_not_set
- || (unrelocated_addr (nlist.n_value)
- < pst->unrelocated_text_low ()
- && (nlist.n_value != 0))))
- {
- pst->set_text_low (unrelocated_addr (nlist.n_value));
- textlow_not_set = 0;
- }
- if (pst != nullptr)
- pst->add_psymbol (std::string_view (sym_name, sym_len), true,
- VAR_DOMAIN, LOC_BLOCK,
- SECT_OFF_TEXT (objfile),
- psymbol_placement::GLOBAL,
- unrelocated_addr (nlist.n_value),
- dbx->ctx.psymtab_language,
- partial_symtabs, objfile);
- continue;
-
- /* Two things show up here (hopefully); static symbols of
- local scope (static used inside braces) or extensions
- of structure symbols. We can ignore both. */
- case 'V':
- case '(':
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- case '-':
- case '#': /* For symbol identification (used in live ranges). */
- continue;
-
- 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. */
-
- complaint (_("unknown symbol descriptor `%c'"),
- p[1]);
-
- /* Ignore it; perhaps it is an extension that we don't
- know about. */
- continue;
- }
- }
-
- case N_EXCL:
-
- namestring = set_namestring (objfile, &nlist);
-
- /* Find the corresponding bincl and mark that psymtab on the
- psymtab dependency list. */
- {
- legacy_psymtab *needed_pst =
- find_corresponding_bincl_psymtab (namestring, nlist.n_value, objfile);
-
- /* If this include file was defined earlier in this file,
- leave it alone. */
- if (needed_pst == pst)
- continue;
-
- if (needed_pst)
- {
- int i;
- int found = 0;
-
- for (i = 0; i < dependencies_used; i++)
- if (dependency_list[i] == needed_pst)
- {
- found = 1;
- break;
- }
-
- /* If it's already in the list, skip the rest. */
- if (found)
- continue;
-
- dependency_list[dependencies_used++] = needed_pst;
- if (dependencies_used >= dependencies_allocated)
- {
- legacy_psymtab **orig = dependency_list;
-
- dependency_list =
- (legacy_psymtab **)
- alloca ((dependencies_allocated *= 2)
- * sizeof (legacy_psymtab *));
- memcpy (dependency_list, orig,
- (dependencies_used
- * sizeof (legacy_psymtab *)));
-#ifdef DEBUG_INFO
- gdb_printf (gdb_stderr,
- "Had to reallocate "
- "dependency list.\n");
- gdb_printf (gdb_stderr,
- "New dependencies allocated: %d\n",
- dependencies_allocated);
-#endif
- }
- }
- }
- continue;
-
- case N_ENDM:
- /* Solaris 2 end of module, finish current partial symbol
- table. stabs_end_psymtab will set the high text address of
- PST to the proper value, which is necessary if a module
- compiled without debugging info follows this module. */
- if (pst && gdbarch_sofun_address_maybe_missing (gdbarch))
- {
- stabs_end_psymtab (objfile, partial_symtabs, pst,
- psymtab_include_list, includes_used,
- symnum * dbx->ctx.symbol_size,
- (unrelocated_addr) 0, dependency_list,
- dependencies_used, textlow_not_set);
- pst = (legacy_psymtab *) 0;
- includes_used = 0;
- dependencies_used = 0;
- dbx->ctx.has_line_numbers = 0;
- }
- continue;
-
- case N_RBRAC:
-#ifdef HANDLE_RBRAC
- HANDLE_RBRAC (nlist.n_value);
- continue;
-#endif
- case N_EINCL:
- case N_DSLINE:
- case N_BSLINE:
- case N_SSYM: /* Claim: Structure or union element.
- Hopefully, I can ignore this. */
- case N_ENTRY: /* Alternate entry point; can ignore. */
- case N_MAIN: /* Can definitely ignore this. */
- case N_CATCH: /* These are GNU C++ extensions */
- case N_EHDECL: /* that can safely be ignored here. */
- case N_LENG:
- case N_BCOMM:
- case N_ECOMM:
- case N_ECOML:
- case N_FNAME:
- case N_SLINE:
- case N_RSYM:
- case N_PSYM:
- case N_BNSYM:
- case N_ENSYM:
- case N_LBRAC:
- case N_NSYMS: /* Ultrix 4.0: symbol count */
- case N_DEFD: /* GNU Modula-2 */
- case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
-
- case N_OBJ: /* Useless types from Solaris. */
- case N_OPT:
- case N_PATCH:
- /* 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. */
- unknown_symtype_complaint (hex_string (nlist.n_type));
- continue;
- }
- }
-
- /* If there's stuff to be cleaned up, clean it up. */
- if (pst)
- {
- /* Don't set high text address of PST lower than it already
- is. */
- unrelocated_addr text_end
- = (unrelocated_addr
- ((dbx->ctx.lowest_text_address == (unrelocated_addr) -1
- ? text_addr
- : CORE_ADDR (dbx->ctx.lowest_text_address))
- + text_size));
-
- stabs_end_psymtab (objfile, partial_symtabs,
- pst, psymtab_include_list, includes_used,
- symnum * dbx->ctx.symbol_size,
- (text_end > pst->unrelocated_text_high ()
- ? text_end : pst->unrelocated_text_high ()),
- dependency_list, dependencies_used, textlow_not_set);
- }
-}
-
-/* Allocate and partially fill a partial symtab. It will be
- completely filled at the end of the symbol list.
-
- SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
- is the address relative to which its symbols are (incremental) or 0
- (normal). */
-
-static legacy_psymtab *
-start_psymtab (psymtab_storage *partial_symtabs, struct objfile *objfile,
- const char *filename, unrelocated_addr textlow, int ldsymoff)
-{
- legacy_psymtab *result = new legacy_psymtab (filename, partial_symtabs,
- objfile->per_bfd, textlow);
-
- struct dbx_symfile_info *key = dbx_objfile_data_key.get(objfile);
-
- result->read_symtab_private =
- XOBNEW (&objfile->objfile_obstack, struct symloc);
- LDSYMOFF (result) = ldsymoff;
- result->legacy_read_symtab = dbx_read_symtab;
- result->legacy_expand_psymtab = dbx_expand_psymtab;
- SYMBOL_SIZE (result) = key->ctx.symbol_size;
- SYMBOL_OFFSET (result) = key->ctx.symbol_table_offset;
- STRING_OFFSET (result) = 0; /* This used to be an uninitialized global. */
- FILE_STRING_OFFSET (result) = key->ctx.file_string_table_offset;
-
- /* Deduce the source language from the filename for this psymtab. */
- key->ctx.psymtab_language = deduce_language_from_filename (filename);
- PST_LANGUAGE (result) = key->ctx.psymtab_language;
-
- return result;
-}
-
-static void
-dbx_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile)
-{
- gdb_assert (!pst->readin);
- struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
-
- /* Read in all partial symtabs on which this one is dependent. */
- pst->expand_dependencies (objfile);
-
- if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */
- {
- /* Init stuff necessary for reading in symbols */
- stabsread_init ();
- scoped_free_pendings free_pending;
- key->ctx.file_string_table_offset = FILE_STRING_OFFSET (pst);
- key->ctx.symbol_size = SYMBOL_SIZE (pst);
-
- /* Read in this file's symbols. */
- if (bfd_seek (objfile->obfd.get (), SYMBOL_OFFSET (pst), SEEK_SET) == 0)
- read_ofile_symtab (objfile, pst);
- }
-
- pst->readin = true;
-}
-
-/* Read in all of the symbols for a given psymtab for real.
- Be verbose about it if the user wants that. SELF is not NULL. */
-
-static void
-dbx_read_symtab (legacy_psymtab *self, struct objfile *objfile)
-{
- gdb_assert (!self->readin);
-
- if (LDSYMLEN (self) || self->number_of_dependencies)
- {
- next_symbol_text_func = dbx_next_symbol_text;
- dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
-
- {
- scoped_restore restore_stabs_data
- = make_scoped_restore (&key->ctx.stabs_data);
- gdb::unique_xmalloc_ptr<gdb_byte> data_holder;
- if (DBX_STAB_SECTION (objfile))
- {
- key->ctx.stabs_data
- = symfile_relocate_debug_section (objfile,
- DBX_STAB_SECTION (objfile),
- NULL);
- data_holder.reset (key->ctx.stabs_data);
- }
-
- self->expand_psymtab (objfile);
- }
-
- /* Match with global symbols. This only needs to be done once,
- after all of the symtabs and dependencies have been read in. */
- scan_file_globals (objfile);
- }
-}
-
-/* Read in a defined section of a specific object file's symbols. */
-
-static void
-read_ofile_symtab (struct objfile *objfile, legacy_psymtab *pst)
-{
- const char *namestring;
- struct external_nlist *bufp;
- struct internal_nlist nlist;
- unsigned char type;
- unsigned max_symnum;
- bfd *abfd;
- int sym_offset; /* Offset to start of symbols to read */
- int sym_size; /* Size of symbols to read */
- CORE_ADDR text_offset; /* Start of text segment for symbols */
- int text_size; /* Size of text segment for symbols */
- struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
-
- sym_offset = LDSYMOFF (pst);
- sym_size = LDSYMLEN (pst);
- text_offset = pst->text_low (objfile);
- text_size = pst->text_high (objfile) - pst->text_low (objfile);
- const section_offsets §ion_offsets = objfile->section_offsets;
-
- key->ctx.stringtab_global = DBX_STRINGTAB (objfile);
- set_last_source_file (NULL);
-
- abfd = objfile->obfd.get ();
- symbuf_end = symbuf_idx = 0;
- key->ctx.symbuf_read = 0;
- key->ctx.symbuf_left = sym_offset + sym_size;
-
- /* It is necessary to actually read one symbol *before* the start
- of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL
- occurs before the N_SO symbol.
-
- Detecting this in read_dbx_symtab
- would slow down initial readin, so we look for it here instead. */
- if (!key->ctx.processing_acc_compilation && sym_offset >= (int) key->ctx.symbol_size)
- {
- stabs_seek (sym_offset - key->ctx.symbol_size, objfile);
- fill_symbuf (abfd, objfile);
- bufp = &symbuf[symbuf_idx++];
- INTERNALIZE_SYMBOL (nlist, bufp, abfd);
- OBJSTAT (objfile, n_stabs++);
-
- namestring = set_namestring (objfile, &nlist);
-
- processing_gcc_compilation = 0;
- if (nlist.n_type == N_TEXT)
- {
- const char *tempstring = namestring;
-
- if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0)
- processing_gcc_compilation = 1;
- else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)
- processing_gcc_compilation = 2;
- if (*tempstring != '\0'
- && *tempstring == bfd_get_symbol_leading_char (objfile->obfd.get ()))
- ++tempstring;
- if (startswith (tempstring, "__gnu_compiled"))
- processing_gcc_compilation = 2;
- }
- }
- else
- {
- /* The N_SO starting this symtab is the first symbol, so we
- better not check the symbol before it. I'm not this can
- happen, but it doesn't hurt to check for it. */
- stabs_seek (sym_offset, objfile);
- processing_gcc_compilation = 0;
- }
-
- if (symbuf_idx == symbuf_end)
- fill_symbuf (abfd, objfile);
- bufp = &symbuf[symbuf_idx];
- if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO)
- error (_("First symbol in segment of executable not a source symbol"));
-
- max_symnum = sym_size / key->ctx.symbol_size;
-
- for (symnum = 0;
- symnum < max_symnum;
- symnum++)
- {
- QUIT; /* Allow this to be interruptable. */
- if (symbuf_idx == symbuf_end)
- fill_symbuf (abfd, objfile);
- bufp = &symbuf[symbuf_idx++];
- INTERNALIZE_SYMBOL (nlist, bufp, abfd);
- OBJSTAT (objfile, n_stabs++);
-
- type = bfd_h_get_8 (abfd, bufp->e_type);
-
- namestring = set_namestring (objfile, &nlist);
-
- if (type & N_STAB)
- {
- if (sizeof (nlist.n_value) > 4
- /* We are a 64-bit debugger debugging a 32-bit program. */
- && (type == N_LSYM || type == N_PSYM))
- /* We have to be careful with the n_value in the case of N_LSYM
- and N_PSYM entries, because they are signed offsets from frame
- pointer, but we actually read them as unsigned 32-bit values.
- This is not a problem for 32-bit debuggers, for which negative
- values end up being interpreted correctly (as negative
- offsets) due to integer overflow.
- But we need to sign-extend the value for 64-bit debuggers,
- or we'll end up interpreting negative values as very large
- positive offsets. */
- nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000;
- process_one_symbol (type, nlist.n_desc, nlist.n_value,
- namestring, section_offsets, objfile,
- PST_LANGUAGE (pst));
- }
- /* We skip checking for a new .o or -l file; that should never
- happen in this routine. */
- else if (type == N_TEXT)
- {
- /* I don't think this code will ever be executed, because
- the GCC_COMPILED_FLAG_SYMBOL usually is right before
- the N_SO symbol which starts this source file.
- However, there is no reason not to accept
- the GCC_COMPILED_FLAG_SYMBOL anywhere. */
-
- if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0)
- processing_gcc_compilation = 1;
- else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)
- processing_gcc_compilation = 2;
- }
- else if (type & N_EXT || type == (unsigned char) N_TEXT
- || type == (unsigned char) N_NBTEXT)
- {
- /* Global symbol: see if we came across a dbx definition for
- a corresponding symbol. If so, store the value. Remove
- syms from the chain when their values are stored, but
- search the whole chain, as there may be several syms from
- different files with the same name. */
- /* This is probably not true. Since the files will be read
- in one at a time, each reference to a global symbol will
- be satisfied in each file as it appears. So we skip this
- section. */
- ;
- }
- }
-
- /* In a Solaris elf file, this variable, which comes from the value
- of the N_SO symbol, will still be 0. Luckily, text_offset, which
- comes from low text address of PST, is correct. */
- if (get_last_source_start_addr () == 0)
- set_last_source_start_addr (text_offset);
-
- /* In reordered executables last_source_start_addr may not be the
- lower bound for this symtab, instead use text_offset which comes
- from the low text address of PST, which is correct. */
- if (get_last_source_start_addr () > text_offset)
- set_last_source_start_addr (text_offset);
-
- pst->compunit_symtab = end_compunit_symtab (text_offset + text_size);
-
- end_stabs ();
-
-}
/* FIXME: The only difference between this and elfstab_build_psymtabs
@@ -227,6 +227,14 @@ stabs_general_complaint (const char *arg1)
complaint ("%s", arg1);
}
+static void
+function_outside_compilation_unit_complaint (const char *arg1)
+{
+ complaint (_("function `%s' appears to be defined "
+ "outside of all compilation units"),
+ arg1);
+}
+
/* Make a list of forward references which haven't been defined. */
static struct type **undef_types;
@@ -702,6 +710,1508 @@ stabs_end_psymtab (struct objfile *objfile, psymtab_storage *partial_symtabs,
return pst;
}
+/* Set namestring based on nlist. If the string table index is invalid,
+ give a fake name, and print a single error message per symbol file read,
+ rather than abort the symbol reading or flood the user with messages. */
+
+static const char *
+set_namestring (struct objfile *objfile, const struct internal_nlist *nlist)
+{
+ const char *namestring;
+ struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ if (nlist->n_strx + key->ctx.file_string_table_offset
+ >= DBX_STRINGTAB_SIZE (objfile)
+ || nlist->n_strx + key->ctx.file_string_table_offset < nlist->n_strx)
+ {
+ complaint (_("bad string table offset in symbol %d"),
+ symnum);
+ namestring = "<bad string table offset>";
+ }
+ else
+ namestring = (nlist->n_strx + key->ctx.file_string_table_offset
+ + DBX_STRINGTAB (objfile));
+ return namestring;
+}
+
+static void
+stabs_seek (int sym_offset, struct objfile *objfile)
+{
+ dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+ if (key->ctx.stabs_data)
+ {
+ key->ctx.symbuf_read += sym_offset;
+ key->ctx.symbuf_left -= sym_offset;
+ }
+ else
+ if (bfd_seek (objfile->obfd.get (), sym_offset, SEEK_CUR) != 0)
+ perror_with_name (bfd_get_filename (objfile->obfd.get ()));
+}
+
+/* Buffer for reading the symbol table entries. */
+static struct external_nlist symbuf[4096];
+static int symbuf_idx;
+static int symbuf_end;
+
+/* Refill the symbol table input buffer
+ and set the variables that control fetching entries from it.
+ Reports an error if no data available.
+ This function can read past the end of the symbol table
+ (into the string table) but this does no harm. */
+
+static void
+fill_symbuf (bfd *sym_bfd, struct objfile *objfile)
+{
+ unsigned int count;
+ int nbytes;
+ struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ if (key->ctx.stabs_data)
+ {
+ nbytes = sizeof (symbuf);
+ if (nbytes > key->ctx.symbuf_left)
+ nbytes = key->ctx.symbuf_left;
+ memcpy (symbuf, key->ctx.stabs_data + key->ctx.symbuf_read, nbytes);
+ }
+ else if (key->ctx.symbuf_sections == NULL)
+ {
+ count = sizeof (symbuf);
+ nbytes = bfd_read (symbuf, count, sym_bfd);
+ }
+ else
+ {
+ if (key->ctx.symbuf_left <= 0)
+ {
+ file_ptr filepos = (*key->ctx.symbuf_sections)[key->ctx.sect_idx]->filepos;
+
+ if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0)
+ perror_with_name (bfd_get_filename (sym_bfd));
+ key->ctx.symbuf_left = bfd_section_size ((*key->ctx.symbuf_sections)[key->ctx.sect_idx]);
+ key->ctx.symbol_table_offset = filepos - key->ctx.symbuf_read;
+ ++key->ctx.sect_idx;
+ }
+
+ count = key->ctx.symbuf_left;
+ if (count > sizeof (symbuf))
+ count = sizeof (symbuf);
+ nbytes = bfd_read (symbuf, count, sym_bfd);
+ }
+
+ if (nbytes < 0)
+ perror_with_name (bfd_get_filename (sym_bfd));
+ else if (nbytes == 0)
+ error (_("Premature end of file reading symbol table"));
+ symbuf_end = nbytes / key->ctx.symbol_size;
+ symbuf_idx = 0;
+ key->ctx.symbuf_left -= nbytes;
+ key->ctx.symbuf_read += nbytes;
+}
+
+/* Read in a defined section of a specific object file's symbols. */
+
+static void
+read_ofile_symtab (struct objfile *objfile, legacy_psymtab *pst)
+{
+ const char *namestring;
+ struct external_nlist *bufp;
+ struct internal_nlist nlist;
+ unsigned char type;
+ unsigned max_symnum;
+ bfd *abfd;
+ int sym_offset; /* Offset to start of symbols to read */
+ int sym_size; /* Size of symbols to read */
+ CORE_ADDR text_offset; /* Start of text segment for symbols */
+ int text_size; /* Size of text segment for symbols */
+ struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ sym_offset = LDSYMOFF (pst);
+ sym_size = LDSYMLEN (pst);
+ text_offset = pst->text_low (objfile);
+ text_size = pst->text_high (objfile) - pst->text_low (objfile);
+ const section_offsets §ion_offsets = objfile->section_offsets;
+
+ key->ctx.stringtab_global = DBX_STRINGTAB (objfile);
+ set_last_source_file (NULL);
+
+ abfd = objfile->obfd.get ();
+ symbuf_end = symbuf_idx = 0;
+ key->ctx.symbuf_read = 0;
+ key->ctx.symbuf_left = sym_offset + sym_size;
+
+ /* It is necessary to actually read one symbol *before* the start
+ of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL
+ occurs before the N_SO symbol.
+
+ Detecting this in read_stabs_symtab
+ would slow down initial readin, so we look for it here instead. */
+ if (!key->ctx.processing_acc_compilation && sym_offset >= (int) key->ctx.symbol_size)
+ {
+ stabs_seek (sym_offset - key->ctx.symbol_size, objfile);
+ fill_symbuf (abfd, objfile);
+ bufp = &symbuf[symbuf_idx++];
+ INTERNALIZE_SYMBOL (nlist, bufp, abfd);
+ OBJSTAT (objfile, n_stabs++);
+
+ namestring = set_namestring (objfile, &nlist);
+
+ processing_gcc_compilation = 0;
+ if (nlist.n_type == N_TEXT)
+ {
+ const char *tempstring = namestring;
+
+ if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0)
+ processing_gcc_compilation = 1;
+ else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)
+ processing_gcc_compilation = 2;
+ if (*tempstring != '\0'
+ && *tempstring == bfd_get_symbol_leading_char (objfile->obfd.get ()))
+ ++tempstring;
+ if (startswith (tempstring, "__gnu_compiled"))
+ processing_gcc_compilation = 2;
+ }
+ }
+ else
+ {
+ /* The N_SO starting this symtab is the first symbol, so we
+ better not check the symbol before it. I'm not this can
+ happen, but it doesn't hurt to check for it. */
+ stabs_seek (sym_offset, objfile);
+ processing_gcc_compilation = 0;
+ }
+
+ if (symbuf_idx == symbuf_end)
+ fill_symbuf (abfd, objfile);
+ bufp = &symbuf[symbuf_idx];
+ if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO)
+ error (_("First symbol in segment of executable not a source symbol"));
+
+ max_symnum = sym_size / key->ctx.symbol_size;
+
+ for (symnum = 0;
+ symnum < max_symnum;
+ symnum++)
+ {
+ QUIT; /* Allow this to be interruptable. */
+ if (symbuf_idx == symbuf_end)
+ fill_symbuf (abfd, objfile);
+ bufp = &symbuf[symbuf_idx++];
+ INTERNALIZE_SYMBOL (nlist, bufp, abfd);
+ OBJSTAT (objfile, n_stabs++);
+
+ type = bfd_h_get_8 (abfd, bufp->e_type);
+
+ namestring = set_namestring (objfile, &nlist);
+
+ if (type & N_STAB)
+ {
+ if (sizeof (nlist.n_value) > 4
+ /* We are a 64-bit debugger debugging a 32-bit program. */
+ && (type == N_LSYM || type == N_PSYM))
+ /* We have to be careful with the n_value in the case of N_LSYM
+ and N_PSYM entries, because they are signed offsets from frame
+ pointer, but we actually read them as unsigned 32-bit values.
+ This is not a problem for 32-bit debuggers, for which negative
+ values end up being interpreted correctly (as negative
+ offsets) due to integer overflow.
+ But we need to sign-extend the value for 64-bit debuggers,
+ or we'll end up interpreting negative values as very large
+ positive offsets. */
+ nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000;
+ process_one_symbol (type, nlist.n_desc, nlist.n_value,
+ namestring, section_offsets, objfile,
+ PST_LANGUAGE (pst));
+ }
+ /* We skip checking for a new .o or -l file; that should never
+ happen in this routine. */
+ else if (type == N_TEXT)
+ {
+ /* I don't think this code will ever be executed, because
+ the GCC_COMPILED_FLAG_SYMBOL usually is right before
+ the N_SO symbol which starts this source file.
+ However, there is no reason not to accept
+ the GCC_COMPILED_FLAG_SYMBOL anywhere. */
+
+ if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0)
+ processing_gcc_compilation = 1;
+ else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)
+ processing_gcc_compilation = 2;
+ }
+ else if (type & N_EXT || type == (unsigned char) N_TEXT
+ || type == (unsigned char) N_NBTEXT)
+ {
+ /* Global symbol: see if we came across a dbx definition for
+ a corresponding symbol. If so, store the value. Remove
+ syms from the chain when their values are stored, but
+ search the whole chain, as there may be several syms from
+ different files with the same name. */
+ /* This is probably not true. Since the files will be read
+ in one at a time, each reference to a global symbol will
+ be satisfied in each file as it appears. So we skip this
+ section. */
+ ;
+ }
+ }
+
+ /* In a Solaris elf file, this variable, which comes from the value
+ of the N_SO symbol, will still be 0. Luckily, text_offset, which
+ comes from low text address of PST, is correct. */
+ if (get_last_source_start_addr () == 0)
+ set_last_source_start_addr (text_offset);
+
+ /* In reordered executables last_source_start_addr may not be the
+ lower bound for this symtab, instead use text_offset which comes
+ from the low text address of PST, which is correct. */
+ if (get_last_source_start_addr () > text_offset)
+ set_last_source_start_addr (text_offset);
+
+ pst->compunit_symtab = end_compunit_symtab (text_offset + text_size);
+
+ end_stabs ();
+
+}
+
+static void
+dbx_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile)
+{
+ gdb_assert (!pst->readin);
+ struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ /* Read in all partial symtabs on which this one is dependent. */
+ pst->expand_dependencies (objfile);
+
+ if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */
+ {
+ /* Init stuff necessary for reading in symbols */
+ stabsread_init ();
+ scoped_free_pendings free_pending;
+ key->ctx.file_string_table_offset = FILE_STRING_OFFSET (pst);
+ key->ctx.symbol_size = SYMBOL_SIZE (pst);
+
+ /* Read in this file's symbols. */
+ if (bfd_seek (objfile->obfd.get (), SYMBOL_OFFSET (pst), SEEK_SET) == 0)
+ read_ofile_symtab (objfile, pst);
+ }
+
+ pst->readin = true;
+}
+
+/* Invariant: The symbol pointed to by symbuf_idx is the first one
+ that hasn't been swapped. Swap the symbol at the same time
+ that symbuf_idx is incremented. */
+
+/* dbx allows the text of a symbol name to be continued into the
+ next symbol name! When such a continuation is encountered
+ (a \ at the end of the text of a name)
+ call this function to get the continuation. */
+
+static const char *
+dbx_next_symbol_text (struct objfile *objfile)
+{
+ struct internal_nlist nlist;
+ dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ if (symbuf_idx == symbuf_end)
+ fill_symbuf (objfile->obfd.get (), objfile);
+
+ symnum++;
+ INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], objfile->obfd.get ());
+ OBJSTAT (objfile, n_stabs++);
+
+ symbuf_idx++;
+
+ return nlist.n_strx + key->ctx.stringtab_global
+ + key->ctx.file_string_table_offset;
+}
+
+/* Read in all of the symbols for a given psymtab for real.
+ Be verbose about it if the user wants that. SELF is not NULL. */
+
+static void
+stabs_read_symtab (legacy_psymtab *self, struct objfile *objfile)
+{
+ gdb_assert (!self->readin);
+
+ if (LDSYMLEN (self) || self->number_of_dependencies)
+ {
+ next_symbol_text_func = dbx_next_symbol_text;
+ dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ {
+ scoped_restore restore_stabs_data = make_scoped_restore (&key->ctx.stabs_data);
+ gdb::unique_xmalloc_ptr<gdb_byte> data_holder;
+ if (DBX_STAB_SECTION (objfile))
+ {
+ key->ctx.stabs_data
+ = symfile_relocate_debug_section (objfile,
+ DBX_STAB_SECTION (objfile),
+ NULL);
+ data_holder.reset (key->ctx.stabs_data);
+ }
+
+ self->expand_psymtab (objfile);
+ }
+
+ /* Match with global symbols. This only needs to be done once,
+ after all of the symtabs and dependencies have been read in. */
+ scan_file_globals (objfile);
+ }
+}
+
+static void
+record_minimal_symbol (minimal_symbol_reader &reader,
+ const char *name, unrelocated_addr address, int type,
+ struct objfile *objfile)
+{
+ enum minimal_symbol_type ms_type;
+ int section;
+ struct dbx_symfile_info *key = dbx_objfile_data_key.get (objfile);
+
+ switch (type)
+ {
+ case N_TEXT | N_EXT:
+ ms_type = mst_text;
+ section = SECT_OFF_TEXT (objfile);
+ break;
+ case N_DATA | N_EXT:
+ ms_type = mst_data;
+ section = SECT_OFF_DATA (objfile);
+ break;
+ case N_BSS | N_EXT:
+ ms_type = mst_bss;
+ section = SECT_OFF_BSS (objfile);
+ break;
+ case N_ABS | N_EXT:
+ ms_type = mst_abs;
+ section = -1;
+ break;
+#ifdef N_SETV
+ case N_SETV | N_EXT:
+ ms_type = mst_data;
+ section = SECT_OFF_DATA (objfile);
+ break;
+ case N_SETV:
+ /* I don't think this type actually exists; since a N_SETV is the result
+ of going over many .o files, it doesn't make sense to have one
+ file local. */
+ ms_type = mst_file_data;
+ section = SECT_OFF_DATA (objfile);
+ break;
+#endif
+ case N_TEXT:
+ case N_NBTEXT:
+ case N_FN:
+ case N_FN_SEQ:
+ ms_type = mst_file_text;
+ section = SECT_OFF_TEXT (objfile);
+ break;
+ case N_DATA:
+ ms_type = mst_file_data;
+
+ /* Check for __DYNAMIC, which is used by Sun shared libraries.
+ Record it as global even if it's local, not global, so
+ lookup_minimal_symbol can find it. We don't check symbol_leading_char
+ because for SunOS4 it always is '_'. */
+ if (strcmp ("__DYNAMIC", name) == 0)
+ ms_type = mst_data;
+
+ /* Same with virtual function tables, both global and static. */
+ {
+ const char *tempstring = name;
+
+ if (*tempstring != '\0'
+ && *tempstring == bfd_get_symbol_leading_char (objfile->obfd.get ()))
+ ++tempstring;
+ if (is_vtable_name (tempstring))
+ ms_type = mst_data;
+ }
+ section = SECT_OFF_DATA (objfile);
+ break;
+ case N_BSS:
+ ms_type = mst_file_bss;
+ section = SECT_OFF_BSS (objfile);
+ break;
+ default:
+ ms_type = mst_unknown;
+ section = -1;
+ break;
+ }
+
+ if ((ms_type == mst_file_text || ms_type == mst_text)
+ && address < key->ctx.lowest_text_address)
+ key->ctx.lowest_text_address = address;
+
+ reader.record_with_info (name, address, ms_type, section);
+}
+
+/* Given a name, value pair, find the corresponding
+ bincl in the list. Return the partial symtab associated
+ with that header_file_location. */
+
+static legacy_psymtab *
+find_corresponding_bincl_psymtab (const char *name, int instance,
+ struct objfile* objfile)
+{
+ stabsread_context ctx = dbx_objfile_data_key.get (objfile) -> ctx;
+ for (const header_file_location &bincl : ctx.bincl_list)
+ if (bincl.instance == instance
+ && strcmp (name, bincl.name) == 0)
+ return bincl.pst;
+
+ repeated_header_complaint (name, symnum);
+ return (legacy_psymtab *) 0;
+}
+
+/* Allocate and partially fill a partial symtab. It will be
+ completely filled at the end of the symbol list.
+
+ SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
+ is the address relative to which its symbols are (incremental) or 0
+ (normal). */
+
+static legacy_psymtab *
+start_psymtab (psymtab_storage *partial_symtabs, struct objfile *objfile,
+ const char *filename, unrelocated_addr textlow, int ldsymoff)
+{
+ legacy_psymtab *result = new legacy_psymtab (filename, partial_symtabs,
+ objfile->per_bfd, textlow);
+
+ struct dbx_symfile_info *key = dbx_objfile_data_key.get(objfile);
+
+ result->read_symtab_private =
+ XOBNEW (&objfile->objfile_obstack, struct symloc);
+ LDSYMOFF (result) = ldsymoff;
+ result->legacy_read_symtab = stabs_read_symtab;
+ result->legacy_expand_psymtab = dbx_expand_psymtab;
+ SYMBOL_SIZE (result) = key->ctx.symbol_size;
+ SYMBOL_OFFSET (result) = key->ctx.symbol_table_offset;
+ STRING_OFFSET (result) = 0; /* This used to be an uninitialized global. */
+ FILE_STRING_OFFSET (result) = key->ctx.file_string_table_offset;
+
+ /* Deduce the source language from the filename for this psymtab. */
+ key->ctx.psymtab_language = deduce_language_from_filename (filename);
+ PST_LANGUAGE (result) = key->ctx.psymtab_language;
+
+ return result;
+}
+
+/* See stabsread.h. */
+
+void
+read_stabs_symtab (minimal_symbol_reader &reader,
+ psymtab_storage *partial_symtabs,
+ struct objfile *objfile)
+{
+ struct gdbarch *gdbarch = objfile->arch ();
+ struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */
+ struct internal_nlist nlist;
+ CORE_ADDR text_addr;
+ int text_size;
+ const char *sym_name;
+ int sym_len;
+ unsigned int next_file_string_table_offset = 0;
+ struct dbx_symfile_info *dbx = dbx_objfile_data_key.get(objfile);
+
+ const char *namestring;
+ int nsl;
+ int past_first_source_file = 0;
+ CORE_ADDR last_function_start = 0;
+ bfd *abfd;
+ int textlow_not_set;
+ int data_sect_index;
+
+ /* Current partial symtab. */
+ legacy_psymtab *pst;
+
+ /* List of current psymtab's include files. */
+ const char **psymtab_include_list;
+ int includes_allocated;
+ int includes_used;
+
+ /* Index within current psymtab dependency list. */
+ legacy_psymtab **dependency_list;
+ int dependencies_used, dependencies_allocated;
+
+ text_addr = DBX_TEXT_ADDR (objfile);
+ text_size = DBX_TEXT_SIZE (objfile);
+
+ /* FIXME. We probably want to change stringtab_global rather than add this
+ while processing every symbol entry. FIXME. */
+ dbx->ctx.file_string_table_offset = 0;
+
+ dbx->ctx.stringtab_global = DBX_STRINGTAB (objfile);
+
+ pst = (legacy_psymtab *) 0;
+
+ includes_allocated = 30;
+ includes_used = 0;
+ psymtab_include_list = (const char **) alloca (includes_allocated *
+ sizeof (const char *));
+
+ dependencies_allocated = 30;
+ dependencies_used = 0;
+ dependency_list =
+ (legacy_psymtab **) alloca (dependencies_allocated *
+ sizeof (legacy_psymtab *));
+
+ /* Init bincl list */
+ std::vector<struct header_file_location> bincl_storage;
+ scoped_restore restore_bincl_global
+ = make_scoped_restore (&(dbx->ctx.bincl_list), bincl_storage);
+
+ set_last_source_file (NULL);
+
+ dbx->ctx.lowest_text_address = (unrelocated_addr) -1;
+
+ abfd = objfile->obfd.get ();
+ symbuf_end = symbuf_idx = 0;
+ next_symbol_text_func = dbx_next_symbol_text;
+ textlow_not_set = 1;
+ dbx->ctx.has_line_numbers = 0;
+
+ /* FIXME: jimb/2003-09-12: We don't apply the right section's offset
+ to global and static variables. The stab for a global or static
+ variable doesn't give us any indication of which section it's in,
+ so we can't tell immediately which offset in
+ objfile->section_offsets we should apply to the variable's
+ address.
+
+ We could certainly find out which section contains the variable
+ by looking up the variable's unrelocated address with
+ find_pc_section, but that would be expensive; this is the
+ function that constructs the partial symbol tables by examining
+ every symbol in the entire executable, and it's
+ performance-critical. So that expense would not be welcome. I'm
+ not sure what to do about this at the moment.
+
+ What we have done for years is to simply assume that the .data
+ section's offset is appropriate for all global and static
+ variables. Recently, this was expanded to fall back to the .bss
+ section's offset if there is no .data section, and then to the
+ .rodata section's offset. */
+ data_sect_index = objfile->sect_index_data;
+ if (data_sect_index == -1)
+ data_sect_index = SECT_OFF_BSS (objfile);
+ if (data_sect_index == -1)
+ data_sect_index = SECT_OFF_RODATA (objfile);
+
+ /* If data_sect_index is still -1, that's okay. It's perfectly fine
+ for the file to have no .data, no .bss, and no .text at all, if
+ it also has no global or static variables. */
+
+ for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++)
+ {
+ /* Get the symbol for this run and pull out some info. */
+ QUIT; /* Allow this to be interruptable. */
+ if (symbuf_idx == symbuf_end)
+ fill_symbuf (abfd, objfile);
+ bufp = &symbuf[symbuf_idx++];
+
+ /*
+ * Special case to speed up readin.
+ */
+ if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE)
+ {
+ dbx->ctx.has_line_numbers = 1;
+ continue;
+ }
+
+ INTERNALIZE_SYMBOL (nlist, bufp, abfd);
+ OBJSTAT (objfile, n_stabs++);
+
+ /* Ok. There is a lot of code duplicated in the rest of this
+ switch statement (for efficiency reasons). Since I don't
+ like duplicating code, I will do my penance here, and
+ describe the code which is duplicated:
+
+ *) The assignment to namestring.
+ *) The call to strchr.
+ *) The addition of a partial symbol the two partial
+ symbol lists. This last is a large section of code, so
+ I've embedded it in the following macro. */
+
+ switch (nlist.n_type)
+ {
+ /*
+ * Standard, external, non-debugger, symbols
+ */
+
+ case N_TEXT | N_EXT:
+ case N_NBTEXT | N_EXT:
+ goto record_it;
+
+ case N_DATA | N_EXT:
+ case N_NBDATA | N_EXT:
+ 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? */
+ goto record_it;
+
+ case N_ABS | N_EXT:
+ record_it:
+ namestring = set_namestring (objfile, &nlist);
+
+ record_minimal_symbol (reader, namestring,
+ unrelocated_addr (nlist.n_value),
+ nlist.n_type, objfile); /* Always */
+ continue;
+
+ /* Standard, local, non-debugger, symbols. */
+
+ case N_NBTEXT:
+
+ /* We need to be able to deal with both N_FN or N_TEXT,
+ because we have no way of knowing whether the sys-supplied ld
+ or GNU ld was used to make the executable. Sequents throw
+ in another wrinkle -- they renumbered N_FN. */
+
+ case N_FN:
+ case N_FN_SEQ:
+ case N_TEXT:
+ namestring = set_namestring (objfile, &nlist);
+
+ if ((namestring[0] == '-' && namestring[1] == 'l')
+ || (namestring[(nsl = strlen (namestring)) - 1] == 'o'
+ && namestring[nsl - 2] == '.'))
+ {
+ unrelocated_addr unrel_val = unrelocated_addr (nlist.n_value);
+
+ if (past_first_source_file && pst
+ /* The gould NP1 uses low values for .o and -l symbols
+ which are not the address. */
+ && unrel_val >= pst->unrelocated_text_low ())
+ {
+ stabs_end_psymtab (objfile, partial_symtabs,
+ pst, psymtab_include_list,
+ includes_used, symnum * dbx->ctx.symbol_size,
+ unrel_val > pst->unrelocated_text_high ()
+ ? unrel_val : pst->unrelocated_text_high (),
+ dependency_list, dependencies_used,
+ textlow_not_set);
+ pst = (legacy_psymtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ dbx->ctx.has_line_numbers = 0;
+ }
+ else
+ past_first_source_file = 1;
+ }
+ else
+ goto record_it;
+ continue;
+
+ case N_DATA:
+ goto record_it;
+
+ case N_UNDF | N_EXT:
+ /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol.
+ We used to rely on the target to tell us whether it knows
+ where the symbol has been relocated to, but none of the
+ target implementations actually provided that operation.
+ So we just ignore the symbol, the same way we would do if
+ we had a target-side symbol lookup which returned no match.
+
+ All other symbols (with nlist.n_value == 0), are really
+ undefined, and so we ignore them too. */
+ continue;
+
+ case N_UNDF:
+ if (dbx->ctx.processing_acc_compilation && nlist.n_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,
+ we must adjust file_string_table_offset *before* calling
+ set_namestring(). */
+ past_first_source_file = 1;
+ dbx->ctx.file_string_table_offset = next_file_string_table_offset;
+ next_file_string_table_offset =
+ dbx->ctx.file_string_table_offset + nlist.n_value;
+ if (next_file_string_table_offset < dbx->ctx.file_string_table_offset)
+ error (_("string table offset backs up at %d"), symnum);
+ /* FIXME -- replace error() with complaint. */
+ continue;
+ }
+ continue;
+
+ /* Lots of symbol types we can just ignore. */
+
+ case N_ABS:
+ case N_NBDATA:
+ case N_NBBSS:
+ continue;
+
+ /* Keep going . . . */
+
+ /*
+ * Special symbol types for GNU
+ */
+ case N_INDR:
+ case N_INDR | N_EXT:
+ case N_SETA:
+ case N_SETA | N_EXT:
+ case N_SETT:
+ case N_SETT | N_EXT:
+ case N_SETD:
+ case N_SETD | N_EXT:
+ case N_SETB:
+ case N_SETB | N_EXT:
+ case N_SETV:
+ continue;
+
+ /*
+ * Debugger symbols
+ */
+
+ case N_SO:
+ {
+ CORE_ADDR valu;
+ static int prev_so_symnum = -10;
+ static int first_so_symnum;
+ const char *p;
+ static const char *dirname_nso;
+ int prev_textlow_not_set;
+
+ valu = nlist.n_value;
+
+ prev_textlow_not_set = textlow_not_set;
+
+ /* A zero value is probably an indication for the SunPRO 3.0
+ compiler. stabs_end_psymtab explicitly tests for zero, so
+ don't relocate it. */
+
+ if (nlist.n_value == 0
+ && gdbarch_sofun_address_maybe_missing (gdbarch))
+ {
+ textlow_not_set = 1;
+ valu = 0;
+ }
+ else
+ textlow_not_set = 0;
+
+ past_first_source_file = 1;
+
+ if (prev_so_symnum != symnum - 1)
+ { /* Here if prev stab wasn't N_SO. */
+ first_so_symnum = symnum;
+
+ if (pst)
+ {
+ unrelocated_addr unrel_value = unrelocated_addr (valu);
+ stabs_end_psymtab (objfile, partial_symtabs,
+ pst, psymtab_include_list,
+ includes_used, symnum * dbx->ctx.symbol_size,
+ unrel_value > pst->unrelocated_text_high ()
+ ? unrel_value
+ : pst->unrelocated_text_high (),
+ dependency_list, dependencies_used,
+ prev_textlow_not_set);
+ pst = (legacy_psymtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ dbx->ctx.has_line_numbers = 0;
+ }
+ }
+
+ prev_so_symnum = symnum;
+
+ /* End the current partial symtab and start a new one. */
+
+ namestring = set_namestring (objfile, &nlist);
+
+ /* 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 '/',
+ we assume the previous N_SO was a directory name. */
+
+ p = lbasename (namestring);
+ if (p != namestring && *p == '\000')
+ {
+ /* Save the directory name SOs locally, then save it into
+ the psymtab when it's created below. */
+ dirname_nso = namestring;
+ continue;
+ }
+
+ /* Some other compilers (C++ ones in particular) emit useless
+ SOs for non-existant .c files. We ignore all subsequent SOs
+ that immediately follow the first. */
+
+ if (!pst)
+ {
+ pst = start_psymtab (partial_symtabs, objfile,
+ namestring,
+ unrelocated_addr (valu),
+ first_so_symnum * dbx->ctx.symbol_size);
+ pst->dirname = dirname_nso;
+ dirname_nso = NULL;
+ }
+ continue;
+ }
+
+ case N_BINCL:
+ {
+ 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_stabs_symtab function returns. */
+
+ namestring = set_namestring (objfile, &nlist);
+ 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
+ || dbx->ctx.psymtab_language != language_cplus))
+ dbx->ctx.psymtab_language = tmp_language;
+
+ if (pst == NULL)
+ {
+ /* FIXME: we should not get here without a PST to work on.
+ Attempt to recover. */
+ complaint (_("N_BINCL %s not in entries for "
+ "any file, at symtab pos %d"),
+ namestring, symnum);
+ continue;
+ }
+ dbx->ctx.bincl_list.emplace_back (namestring, nlist.n_value, pst);
+
+ /* Mark down an include file in the current psymtab. */
+
+ goto record_include_file;
+ }
+
+ case N_SOL:
+ {
+ enum language tmp_language;
+
+ /* Mark down an include file in the current psymtab. */
+ namestring = set_namestring (objfile, &nlist);
+ 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
+ || dbx->ctx.psymtab_language != language_cplus))
+ dbx->ctx.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 && filename_cmp (namestring, pst->filename) == 0)
+ continue;
+ {
+ int i;
+
+ for (i = 0; i < includes_used; i++)
+ if (filename_cmp (namestring, psymtab_include_list[i]) == 0)
+ {
+ i = -1;
+ break;
+ }
+ if (i == -1)
+ continue;
+ }
+
+ record_include_file:
+
+ psymtab_include_list[includes_used++] = namestring;
+ if (includes_used >= includes_allocated)
+ {
+ const char **orig = psymtab_include_list;
+
+ psymtab_include_list = (const char **)
+ alloca ((includes_allocated *= 2) * sizeof (const char *));
+ memcpy (psymtab_include_list, orig,
+ includes_used * sizeof (const 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. */
+ {
+ const char *p;
+
+ namestring = set_namestring (objfile, &nlist);
+
+ /* See if this is an end of function stab. */
+ if (pst && nlist.n_type == N_FUN && *namestring == '\000')
+ {
+ unrelocated_addr 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 = unrelocated_addr (nlist.n_value + last_function_start);
+ if (pst->unrelocated_text_high () == unrelocated_addr (0)
+ || valu > pst->unrelocated_text_high ())
+ pst->set_text_high (valu);
+ break;
+ }
+
+ p = (char *) strchr (namestring, ':');
+ if (!p)
+ continue; /* Not a debugging symbol. */
+
+ sym_len = 0;
+ sym_name = NULL; /* pacify "gcc -Werror" */
+ if (dbx->ctx.psymtab_language == language_cplus)
+ {
+ std::string name (namestring, p - namestring);
+ gdb::unique_xmalloc_ptr<char> new_name
+ = cp_canonicalize_string (name.c_str ());
+ if (new_name != nullptr)
+ {
+ sym_len = strlen (new_name.get ());
+ sym_name = obstack_strdup (&objfile->objfile_obstack,
+ new_name.get ());
+ }
+ }
+ else if (dbx->ctx.psymtab_language == language_c)
+ {
+ std::string name (namestring, p - namestring);
+ gdb::unique_xmalloc_ptr<char> new_name
+ = c_canonicalize_name (name.c_str ());
+ if (new_name != nullptr)
+ {
+ sym_len = strlen (new_name.get ());
+ sym_name = obstack_strdup (&objfile->objfile_obstack,
+ new_name.get ());
+ }
+ }
+
+ if (sym_len == 0)
+ {
+ sym_name = namestring;
+ sym_len = p - namestring;
+ }
+
+ /* 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':
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len), true,
+ VAR_DOMAIN, LOC_STATIC,
+ data_sect_index,
+ psymbol_placement::STATIC,
+ unrelocated_addr (nlist.n_value),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("static `%*s' appears to be defined "
+ "outside of all compilation units"),
+ sym_len, sym_name);
+ continue;
+
+ case 'G':
+ /* The addresses in these entries are reported to be
+ wrong. See the code that reads 'G's for symtabs. */
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len), true,
+ VAR_DOMAIN, LOC_STATIC,
+ data_sect_index,
+ psymbol_placement::GLOBAL,
+ unrelocated_addr (nlist.n_value),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("global `%*s' appears to be defined "
+ "outside of all compilation units"),
+ sym_len, sym_name);
+ continue;
+
+ case 'T':
+ /* When a 'T' entry is defining an anonymous enum, it
+ may have a name which is the empty string, or a
+ single space. Since they're not really defining a
+ symbol, those shouldn't go in the partial symbol
+ table. We do pick up the elements of such enums at
+ 'check_enum:', below. */
+ if (p >= namestring + 2
+ || (p == namestring + 1
+ && namestring[0] != ' '))
+ {
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len),
+ true, STRUCT_DOMAIN, LOC_TYPEDEF, -1,
+ psymbol_placement::STATIC,
+ unrelocated_addr (0),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("enum, struct, or union `%*s' appears "
+ "to be defined outside of all "
+ "compilation units"),
+ sym_len, sym_name);
+ if (p[2] == 't')
+ {
+ /* Also a typedef with the same name. */
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len),
+ true, VAR_DOMAIN, LOC_TYPEDEF, -1,
+ psymbol_placement::STATIC,
+ unrelocated_addr (0),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("typedef `%*s' appears to be defined "
+ "outside of all compilation units"),
+ sym_len, sym_name);
+ p += 1;
+ }
+ }
+ goto check_enum;
+
+ case 't':
+ if (p != namestring) /* a name is there, not just :T... */
+ {
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len),
+ true, VAR_DOMAIN, LOC_TYPEDEF, -1,
+ psymbol_placement::STATIC,
+ unrelocated_addr (0),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("typename `%*s' appears to be defined "
+ "outside of all compilation units"),
+ sym_len, sym_name);
+ }
+ check_enum:
+ /* If this is an enumerated type, we need to
+ add all the enum constants to the partial symbol
+ table. This does not cover enums without names, e.g.
+ "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 the
+ enum in a nameless type. GCC2 does this. */
+
+ /* We are looking for something of the form
+ <name> ":" ("t" | "T") [<number> "="] "e"
+ {<constant> ":" <value> ","} ";". */
+
+ /* Skip over the colon and the 't' or 'T'. */
+ p += 2;
+ /* This type may be given a number. Also, numbers can come
+ in pairs like (0,26). Skip over it. */
+ while ((*p >= '0' && *p <= '9')
+ || *p == '(' || *p == ',' || *p == ')'
+ || *p == '=')
+ p++;
+
+ 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.
+ I don't know where that happens.
+ Accept either. */
+ while (*p && *p != ';' && *p != ',')
+ {
+ const char *q;
+
+ /* Check for and handle cretinous dbx symbol name
+ continuation! */
+ if (*p == '\\' || (*p == '?' && p[1] == '\0'))
+ p = next_symbol_text (objfile);
+
+ /* Point to the character after the name
+ of the enum constant. */
+ for (q = p; *q && *q != ':'; q++)
+ ;
+ /* Note that the value doesn't matter for
+ enum constants in psymtabs, just in symtabs. */
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (p, q - p), true,
+ VAR_DOMAIN, LOC_CONST, -1,
+ psymbol_placement::STATIC,
+ unrelocated_addr (0),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("enum constant `%*s' appears to be defined "
+ "outside of all compilation units"),
+ ((int) (q - p)), p);
+ /* Point past the name. */
+ p = q;
+ /* Skip over the value. */
+ while (*p && *p != ',')
+ p++;
+ /* Advance past the comma. */
+ if (*p)
+ p++;
+ }
+ }
+ continue;
+
+ case 'c':
+ /* Constant, e.g. from "const" in Pascal. */
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len), true,
+ VAR_DOMAIN, LOC_CONST, -1,
+ psymbol_placement::STATIC,
+ unrelocated_addr (0),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ else
+ complaint (_("constant `%*s' appears to be defined "
+ "outside of all compilation units"),
+ sym_len, sym_name);
+
+ continue;
+
+ case 'f':
+ if (! pst)
+ {
+ std::string name (namestring, (p - namestring));
+ function_outside_compilation_unit_complaint (name.c_str ());
+ }
+ /* Kludges for ELF/STABS with Sun ACC. */
+ dbx->ctx.last_function_name = namestring;
+ /* 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 (nlist.n_value == 0
+ && gdbarch_sofun_address_maybe_missing (gdbarch))
+ {
+ bound_minimal_symbol minsym
+ = find_stab_function (namestring,
+ pst ? pst->filename : NULL, objfile);
+ if (minsym.minsym != NULL)
+ nlist.n_value
+ = CORE_ADDR (minsym.minsym->unrelocated_address ());
+ }
+ if (pst && textlow_not_set
+ && gdbarch_sofun_address_maybe_missing (gdbarch))
+ {
+ pst->set_text_low (unrelocated_addr (nlist.n_value));
+ textlow_not_set = 0;
+ }
+ /* End kludge. */
+
+ /* Keep track of the start of the last function so we
+ can handle end of function symbols. */
+ last_function_start = nlist.n_value;
+
+ /* 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 (pst
+ && (textlow_not_set
+ || (unrelocated_addr (nlist.n_value)
+ < pst->unrelocated_text_low ()
+ && (nlist.n_value != 0))))
+ {
+ pst->set_text_low (unrelocated_addr (nlist.n_value));
+ textlow_not_set = 0;
+ }
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len), true,
+ VAR_DOMAIN, LOC_BLOCK,
+ SECT_OFF_TEXT (objfile),
+ psymbol_placement::STATIC,
+ unrelocated_addr (nlist.n_value),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, 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':
+ if (! pst)
+ {
+ std::string name (namestring, (p - namestring));
+ function_outside_compilation_unit_complaint (name.c_str ());
+ }
+ /* Kludges for ELF/STABS with Sun ACC. */
+ dbx->ctx.last_function_name = namestring;
+ /* 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 (nlist.n_value == 0
+ && gdbarch_sofun_address_maybe_missing (gdbarch))
+ {
+ bound_minimal_symbol minsym
+ = find_stab_function (namestring,
+ pst ? pst->filename : NULL, objfile);
+ if (minsym.minsym != NULL)
+ nlist.n_value
+ = CORE_ADDR (minsym.minsym->unrelocated_address ());
+ }
+ if (pst && textlow_not_set
+ && gdbarch_sofun_address_maybe_missing (gdbarch))
+ {
+ pst->set_text_low (unrelocated_addr (nlist.n_value));
+ textlow_not_set = 0;
+ }
+ /* End kludge. */
+
+ /* Keep track of the start of the last function so we
+ can handle end of function symbols. */
+ last_function_start = nlist.n_value;
+
+ /* 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 (pst
+ && (textlow_not_set
+ || (unrelocated_addr (nlist.n_value)
+ < pst->unrelocated_text_low ()
+ && (nlist.n_value != 0))))
+ {
+ pst->set_text_low (unrelocated_addr (nlist.n_value));
+ textlow_not_set = 0;
+ }
+ if (pst != nullptr)
+ pst->add_psymbol (std::string_view (sym_name, sym_len), true,
+ VAR_DOMAIN, LOC_BLOCK,
+ SECT_OFF_TEXT (objfile),
+ psymbol_placement::GLOBAL,
+ unrelocated_addr (nlist.n_value),
+ dbx->ctx.psymtab_language,
+ partial_symtabs, objfile);
+ continue;
+
+ /* Two things show up here (hopefully); static symbols of
+ local scope (static used inside braces) or extensions
+ of structure symbols. We can ignore both. */
+ case 'V':
+ case '(':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case '-':
+ case '#': /* For symbol identification (used in live ranges). */
+ continue;
+
+ 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. */
+
+ complaint (_("unknown symbol descriptor `%c'"),
+ p[1]);
+
+ /* Ignore it; perhaps it is an extension that we don't
+ know about. */
+ continue;
+ }
+ }
+
+ case N_EXCL:
+
+ namestring = set_namestring (objfile, &nlist);
+
+ /* Find the corresponding bincl and mark that psymtab on the
+ psymtab dependency list. */
+ {
+ legacy_psymtab *needed_pst =
+ find_corresponding_bincl_psymtab (namestring, nlist.n_value, objfile);
+
+ /* If this include file was defined earlier in this file,
+ leave it alone. */
+ if (needed_pst == pst)
+ continue;
+
+ if (needed_pst)
+ {
+ int i;
+ int found = 0;
+
+ for (i = 0; i < dependencies_used; i++)
+ if (dependency_list[i] == needed_pst)
+ {
+ found = 1;
+ break;
+ }
+
+ /* If it's already in the list, skip the rest. */
+ if (found)
+ continue;
+
+ dependency_list[dependencies_used++] = needed_pst;
+ if (dependencies_used >= dependencies_allocated)
+ {
+ legacy_psymtab **orig = dependency_list;
+
+ dependency_list =
+ (legacy_psymtab **)
+ alloca ((dependencies_allocated *= 2)
+ * sizeof (legacy_psymtab *));
+ memcpy (dependency_list, orig,
+ (dependencies_used
+ * sizeof (legacy_psymtab *)));
+#ifdef DEBUG_INFO
+ gdb_printf (gdb_stderr,
+ "Had to reallocate "
+ "dependency list.\n");
+ gdb_printf (gdb_stderr,
+ "New dependencies allocated: %d\n",
+ dependencies_allocated);
+#endif
+ }
+ }
+ }
+ continue;
+
+ case N_ENDM:
+ /* Solaris 2 end of module, finish current partial symbol
+ table. stabs_end_psymtab will set the high text address of
+ PST to the proper value, which is necessary if a module
+ compiled without debugging info follows this module. */
+ if (pst && gdbarch_sofun_address_maybe_missing (gdbarch))
+ {
+ stabs_end_psymtab (objfile, partial_symtabs, pst,
+ psymtab_include_list, includes_used,
+ symnum * dbx->ctx.symbol_size,
+ (unrelocated_addr) 0, dependency_list,
+ dependencies_used, textlow_not_set);
+ pst = (legacy_psymtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ dbx->ctx.has_line_numbers = 0;
+ }
+ continue;
+
+ case N_RBRAC:
+#ifdef HANDLE_RBRAC
+ HANDLE_RBRAC (nlist.n_value);
+ continue;
+#endif
+ case N_EINCL:
+ case N_DSLINE:
+ case N_BSLINE:
+ case N_SSYM: /* Claim: Structure or union element.
+ Hopefully, I can ignore this. */
+ case N_ENTRY: /* Alternate entry point; can ignore. */
+ case N_MAIN: /* Can definitely ignore this. */
+ case N_CATCH: /* These are GNU C++ extensions */
+ case N_EHDECL: /* that can safely be ignored here. */
+ case N_LENG:
+ case N_BCOMM:
+ case N_ECOMM:
+ case N_ECOML:
+ case N_FNAME:
+ case N_SLINE:
+ case N_RSYM:
+ case N_PSYM:
+ case N_BNSYM:
+ case N_ENSYM:
+ case N_LBRAC:
+ case N_NSYMS: /* Ultrix 4.0: symbol count */
+ case N_DEFD: /* GNU Modula-2 */
+ case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
+
+ case N_OBJ: /* Useless types from Solaris. */
+ case N_OPT:
+ case N_PATCH:
+ /* 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. */
+ unknown_symtype_complaint (hex_string (nlist.n_type));
+ continue;
+ }
+ }
+
+ /* If there's stuff to be cleaned up, clean it up. */
+ if (pst)
+ {
+ /* Don't set high text address of PST lower than it already
+ is. */
+ unrelocated_addr text_end
+ = (unrelocated_addr
+ ((dbx->ctx.lowest_text_address == (unrelocated_addr) -1
+ ? text_addr
+ : CORE_ADDR (dbx->ctx.lowest_text_address))
+ + text_size));
+
+ stabs_end_psymtab (objfile, partial_symtabs,
+ pst, psymtab_include_list, includes_used,
+ symnum * dbx->ctx.symbol_size,
+ (text_end > pst->unrelocated_text_high ()
+ ? text_end : pst->unrelocated_text_high ()),
+ dependency_list, dependencies_used, textlow_not_set);
+ }
+}
+
/* Record the namespace that the function defined by SYMBOL was
defined in, if necessary. BLOCK is the associated block; use
OBSTACK for allocation. */
@@ -1,5 +1,5 @@
-/* Include file for stabs debugging format support functions.
- Copyright (C) 1986-2024 Free Software Foundation, Inc.
+ /* Include file for stabs debugging format support functions.
+ Copyright (C) 1986-2024 Free Software Foundation, Inc.
This file is part of GDB.
@@ -185,6 +185,13 @@ extern void process_one_symbol (int, int, CORE_ADDR, const char *,
const section_offsets &,
struct objfile *, enum language);
+/* Setup partial_symtab's describing each source file for which
+ debugging information is available. */
+
+void
+read_stabs_symtab (minimal_symbol_reader &,
+ psymtab_storage *, struct objfile *);
+
extern void elfstab_build_psymtabs (struct objfile *objfile,
asection *stabsect,
file_ptr stabstroffset,
@@ -253,6 +260,24 @@ process_one_symbol (int, int, CORE_ADDR, const char *,
#define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
#define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen)
+#define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private))
+#define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size)
+#define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset)
+#define STRING_OFFSET(p) (SYMLOC(p)->string_offset)
+#define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset)
+#define PST_LANGUAGE(p) (SYMLOC(p)->pst_language)
+
+#define INTERNALIZE_SYMBOL(intern, extern, abfd) \
+ { \
+ (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \
+ (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \
+ (intern).n_other = 0; \
+ (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \
+ if (bfd_get_sign_extend_vma (abfd)) \
+ (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \
+ else \
+ (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \
+ }
/* We put a pointer to this structure in the read_symtab_private field
of the psymtab. */