cris: Check UNDEFWEAK_NO_DYNAMIC_RELOC
[deliverable/binutils-gdb.git] / gdb / psymtab.c
index 6f7fec602cac07be04bd72359693ede8ab63857d..f848990867235d201b5b62d7bc9e6d7a5c2afea9 100644 (file)
@@ -1,6 +1,6 @@
 /* Partial symbol tables.
 
-   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 2009-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
 #include "language.h"
 #include "cp-support.h"
 #include "gdbcmd.h"
-
-#ifndef DEV_TTY
-#define DEV_TTY "/dev/tty"
-#endif
+#include <algorithm>
 
 struct psymbol_bcache
 {
@@ -89,6 +86,12 @@ require_partial_symbols (struct objfile *objfile, int verbose)
              gdb_flush (gdb_stdout);
            }
          (*objfile->sf->sym_read_psymbols) (objfile);
+
+         /* Partial symbols list are not expected to changed after this
+            point.  */
+         objfile->global_psymbols.shrink_to_fit ();
+         objfile->static_psymbols.shrink_to_fit ();
+
          if (verbose)
            {
              if (!objfile_has_symbols (objfile))
@@ -127,13 +130,12 @@ require_partial_symbols (struct objfile *objfile, int verbose)
 /* Helper function for psym_map_symtabs_matching_filename that
    expands the symtabs and calls the iterator.  */
 
-static int
+static bool
 partial_map_expand_apply (struct objfile *objfile,
                          const char *name,
                          const char *real_path,
                          struct partial_symtab *pst,
-                         int (*callback) (struct symtab *, void *),
-                         void *data)
+                         gdb::function_view<bool (symtab *)> callback)
 {
   struct compunit_symtab *last_made = objfile->compunit_symtabs;
 
@@ -149,20 +151,19 @@ partial_map_expand_apply (struct objfile *objfile,
      all of them.  */
   psymtab_to_symtab (objfile, pst);
 
-  return iterate_over_some_symtabs (name, real_path, callback, data,
-                                   objfile->compunit_symtabs, last_made);
+  return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs,
+                                   last_made, callback);
 }
 
 /*  Psymtab version of map_symtabs_matching_filename.  See its definition in
     the definition of quick_symbol_functions in symfile.h.  */
 
-static int
-psym_map_symtabs_matching_filename (struct objfile *objfile,
-                                   const char *name,
-                                   const char *real_path,
-                                   int (*callback) (struct symtab *,
-                                                    void *),
-                                   void *data)
+static bool
+psym_map_symtabs_matching_filename
+  (struct objfile *objfile,
+   const char *name,
+   const char *real_path,
+   gdb::function_view<bool (symtab *)> callback)
 {
   struct partial_symtab *pst;
   const char *name_basename = lbasename (name);
@@ -181,8 +182,8 @@ psym_map_symtabs_matching_filename (struct objfile *objfile,
     if (compare_filenames_for_search (pst->filename, name))
       {
        if (partial_map_expand_apply (objfile, name, real_path,
-                                     pst, callback, data))
-         return 1;
+                                     pst, callback))
+         return true;
        continue;
       }
 
@@ -195,8 +196,8 @@ psym_map_symtabs_matching_filename (struct objfile *objfile,
     if (compare_filenames_for_search (psymtab_to_fullname (pst), name))
       {
        if (partial_map_expand_apply (objfile, name, real_path,
-                                     pst, callback, data))
-         return 1;
+                                     pst, callback))
+         return true;
        continue;
       }
 
@@ -209,14 +210,14 @@ psym_map_symtabs_matching_filename (struct objfile *objfile,
        if (filename_cmp (psymtab_to_fullname (pst), real_path) == 0)
          {
            if (partial_map_expand_apply (objfile, name, real_path,
-                                         pst, callback, data))
-             return 1;
+                                         pst, callback))
+             return true;
            continue;
          }
       }
   }
 
-  return 0;
+  return false;
 }
 
 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
@@ -408,7 +409,7 @@ find_pc_sect_psymbol (struct objfile *objfile,
                      struct partial_symtab *psymtab, CORE_ADDR pc,
                      struct obj_section *section)
 {
-  struct partial_symbol *best = NULL, *p, **pp;
+  struct partial_symbol *best = NULL;
   CORE_ADDR best_pc;
 
   gdb_assert (psymtab != NULL);
@@ -419,12 +420,10 @@ find_pc_sect_psymbol (struct objfile *objfile,
   /* Search the global symbols as well as the static symbols, so that
      find_pc_partial_function doesn't use a minimal symbol and thus
      cache a bad endaddr.  */
-  for (pp = objfile->global_psymbols.list + psymtab->globals_offset;
-       (pp - (objfile->global_psymbols.list + psymtab->globals_offset)
-       < psymtab->n_global_syms);
-       pp++)
+  for (int i = 0; i < psymtab->n_global_syms; i++)
     {
-      p = *pp;
+      partial_symbol *p = objfile->global_psymbols[psymtab->globals_offset + i];
+
       if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
          && PSYMBOL_CLASS (p) == LOC_BLOCK
          && pc >= SYMBOL_VALUE_ADDRESS (p)
@@ -444,12 +443,10 @@ find_pc_sect_psymbol (struct objfile *objfile,
        }
     }
 
-  for (pp = objfile->static_psymbols.list + psymtab->statics_offset;
-       (pp - (objfile->static_psymbols.list + psymtab->statics_offset)
-       < psymtab->n_static_syms);
-       pp++)
+  for (int i = 0; i < psymtab->n_static_syms; i++)
     {
-      p = *pp;
+      partial_symbol *p = objfile->static_psymbols[psymtab->statics_offset + i];
+
       if (SYMBOL_DOMAIN (p) == VAR_DOMAIN
          && PSYMBOL_CLASS (p) == LOC_BLOCK
          && pc >= SYMBOL_VALUE_ADDRESS (p)
@@ -535,10 +532,10 @@ psym_lookup_symbol (struct objfile *objfile,
           information (but NAME might contain it).  */
 
        if (sym != NULL
-           && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0)
+           && SYMBOL_MATCHES_SEARCH_NAME (sym, name))
          return stab;
        if (with_opaque != NULL
-           && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0)
+           && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, name))
          stab_best = stab;
 
        /* Keep looking through other psymtabs.  */
@@ -571,8 +568,8 @@ match_partial_symbol (struct objfile *objfile,
   if (length == 0)
       return NULL;
   start = (global ?
-          objfile->global_psymbols.list + pst->globals_offset :
-          objfile->static_psymbols.list + pst->statics_offset);
+          &objfile->global_psymbols[pst->globals_offset] :
+          &objfile->static_psymbols[pst->statics_offset]);
 
   if (global && ordered_compare)  /* Can use a binary search.  */
     {
@@ -591,9 +588,6 @@ match_partial_symbol (struct objfile *objfile,
        {
          center = bottom + (top - bottom) / 2;
          gdb_assert (center < top);
-         if (!do_linear_search
-             && (SYMBOL_LANGUAGE (*center) == language_java))
-           do_linear_search = 1;
          if (ordered_compare (SYMBOL_SEARCH_NAME (*center), name) >= 0)
            top = center;
          else
@@ -632,21 +626,18 @@ match_partial_symbol (struct objfile *objfile,
    not contain any method/function instance information (since this would
    force reading type information while reading psymtabs).  Therefore,
    if NAME contains overload information, it must be stripped before searching
-   psymtabs.
-
-   The caller is responsible for freeing the return result.  */
+   psymtabs.  */
 
-static char *
+static gdb::unique_xmalloc_ptr<char>
 psymtab_search_name (const char *name)
 {
   switch (current_language->la_language)
     {
     case language_cplus:
-    case language_java:
       {
        if (strchr (name, '('))
          {
-           char *ret = cp_remove_params (name);
+           gdb::unique_xmalloc_ptr<char> ret = cp_remove_params (name);
 
            if (ret)
              return ret;
@@ -658,7 +649,7 @@ psymtab_search_name (const char *name)
       break;
     }
 
-  return xstrdup (name);
+  return gdb::unique_xmalloc_ptr<char> (xstrdup (name));
 }
 
 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
@@ -673,17 +664,14 @@ lookup_partial_symbol (struct objfile *objfile,
   struct partial_symbol **top, **real_top, **bottom, **center;
   int length = (global ? pst->n_global_syms : pst->n_static_syms);
   int do_linear_search = 1;
-  char *search_name;
-  struct cleanup *cleanup;
 
   if (length == 0)
     return NULL;
 
-  search_name = psymtab_search_name (name);
-  cleanup = make_cleanup (xfree, search_name);
+  gdb::unique_xmalloc_ptr<char> search_name = psymtab_search_name (name);
   start = (global ?
-          objfile->global_psymbols.list + pst->globals_offset :
-          objfile->static_psymbols.list + pst->statics_offset);
+          &objfile->global_psymbols[pst->globals_offset] :
+          &objfile->static_psymbols[pst->statics_offset]);
 
   if (global)                  /* This means we can use a binary search.  */
     {
@@ -704,13 +692,8 @@ lookup_partial_symbol (struct objfile *objfile,
          if (!(center < top))
            internal_error (__FILE__, __LINE__,
                            _("failed internal consistency check"));
-         if (!do_linear_search
-             && SYMBOL_LANGUAGE (*center) == language_java)
-           {
-             do_linear_search = 1;
-           }
          if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center),
-                                search_name) >= 0)
+                                search_name.get ()) >= 0)
            {
              top = center;
            }
@@ -725,20 +708,19 @@ lookup_partial_symbol (struct objfile *objfile,
 
       /* For `case_sensitivity == case_sensitive_off' strcmp_iw_ordered will
         search more exactly than what matches SYMBOL_MATCHES_SEARCH_NAME.  */
-      while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
+      while (top >= start && SYMBOL_MATCHES_SEARCH_NAME (*top,
+                                                        search_name.get ()))
        top--;
 
       /* Fixup to have a symbol which matches SYMBOL_MATCHES_SEARCH_NAME.  */
       top++;
 
-      while (top <= real_top && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name))
+      while (top <= real_top
+            && SYMBOL_MATCHES_SEARCH_NAME (*top, search_name.get ()))
        {
          if (symbol_matches_domain (SYMBOL_LANGUAGE (*top),
                                     SYMBOL_DOMAIN (*top), domain))
-           {
-             do_cleanups (cleanup);
-             return *top;
-           }
+           return *top;
          top++;
        }
     }
@@ -752,15 +734,11 @@ lookup_partial_symbol (struct objfile *objfile,
        {
          if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym),
                                     SYMBOL_DOMAIN (*psym), domain)
-             && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name))
-           {
-             do_cleanups (cleanup);
-             return *psym;
-           }
+             && SYMBOL_MATCHES_SEARCH_NAME (*psym, search_name.get ()))
+           return *psym;
        }
     }
 
-  do_cleanups (cleanup);
   return NULL;
 }
 
@@ -785,10 +763,9 @@ psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
   /* If it has not yet been read in, read it.  */
   if (!pst->readin)
     {
-      struct cleanup *back_to = increment_reading_symtab ();
+      scoped_restore decrementer = increment_reading_symtab ();
 
       (*pst->read_symtab) (pst, objfile);
-      do_cleanups (back_to);
     }
 
   return pst->compunit_symtab;
@@ -811,23 +788,17 @@ psym_relocate (struct objfile *objfile,
       p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
     }
 
-  for (psym = objfile->global_psymbols.list;
-       psym < objfile->global_psymbols.next;
-       psym++)
+  for (partial_symbol *psym : objfile->global_psymbols)
     {
-      fixup_psymbol_section (*psym, objfile);
-      if (SYMBOL_SECTION (*psym) >= 0)
-       SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
-                                                 SYMBOL_SECTION (*psym));
+      fixup_psymbol_section (psym, objfile);
+      if (SYMBOL_SECTION (psym) >= 0)
+       SYMBOL_VALUE_ADDRESS (psym) += ANOFFSET (delta, SYMBOL_SECTION (psym));
     }
-  for (psym = objfile->static_psymbols.list;
-       psym < objfile->static_psymbols.next;
-       psym++)
+  for (partial_symbol *psym : objfile->static_psymbols)
     {
-      fixup_psymbol_section (*psym, objfile);
-      if (SYMBOL_SECTION (*psym) >= 0)
-       SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
-                                                 SYMBOL_SECTION (*psym));
+      fixup_psymbol_section (psym, objfile);
+      if (SYMBOL_SECTION (psym) >= 0)
+       SYMBOL_VALUE_ADDRESS (psym) += ANOFFSET (delta, SYMBOL_SECTION (psym));
     }
 }
 
@@ -890,7 +861,7 @@ psym_forget_cached_source_info (struct objfile *objfile)
 
 static void
 print_partial_symbols (struct gdbarch *gdbarch,
-                      struct partial_symbol **p, int count, char *what,
+                      struct partial_symbol **p, int count, const char *what,
                       struct ui_file *outfile)
 {
   fprintf_filtered (outfile, "  %s partial symbols:\n", what);
@@ -1039,15 +1010,13 @@ dump_psymtab (struct objfile *objfile, struct partial_symtab *psymtab,
   if (psymtab->n_global_syms > 0)
     {
       print_partial_symbols (gdbarch,
-                            objfile->global_psymbols.list
-                            + psymtab->globals_offset,
+                            &objfile->global_psymbols[psymtab->globals_offset],
                             psymtab->n_global_syms, "Global", outfile);
     }
   if (psymtab->n_static_syms > 0)
     {
       print_partial_symbols (gdbarch,
-                            objfile->static_psymbols.list
-                            + psymtab->statics_offset,
+                            &objfile->static_psymbols[psymtab->statics_offset],
                             psymtab->n_static_syms, "Static", outfile);
     }
   fprintf_filtered (outfile, "\n");
@@ -1215,22 +1184,20 @@ psymtab_to_fullname (struct partial_symtab *ps)
        close (fd);
       else
        {
-         char *fullname;
-         struct cleanup *back_to;
+         gdb::unique_xmalloc_ptr<char> fullname;
 
          /* rewrite_source_path would be applied by find_and_open_source, we
             should report the pathname where GDB tried to find the file.  */
 
          if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
-           fullname = xstrdup (ps->filename);
+           fullname.reset (xstrdup (ps->filename));
          else
-           fullname = concat (ps->dirname, SLASH_STRING, ps->filename, NULL);
+           fullname.reset (concat (ps->dirname, SLASH_STRING,
+                                   ps->filename, (char *) NULL));
 
-         back_to = make_cleanup (xfree, fullname);
-         ps->fullname = rewrite_source_path (fullname);
+         ps->fullname = rewrite_source_path (fullname.get ()).release ();
          if (ps->fullname == NULL)
-           ps->fullname = xstrdup (fullname);
-         do_cleanups (back_to);
+           ps->fullname = fullname.release ();
        }
     }
 
@@ -1303,20 +1270,16 @@ psym_map_matching_symbols (struct objfile *objfile,
     }
 }
 
-/* A helper for psym_expand_symtabs_matching that handles
-   searching included psymtabs.  This returns 1 if a symbol is found,
-   and zero otherwise.  It also updates the 'searched_flag' on the
+/* A helper for psym_expand_symtabs_matching that handles searching
+   included psymtabs.  This returns true if a symbol is found, and
+   false otherwise.  It also updates the 'searched_flag' on the
    various psymtabs that it searches.  */
 
-static int
-recursively_search_psymtabs (struct partial_symtab *ps,
-                            struct objfile *objfile,
-                            enum search_domain kind,
-                            expand_symtabs_symbol_matcher_ftype *sym_matcher,
-                            void *data)
+static bool
+recursively_search_psymtabs
+  (struct partial_symtab *ps, struct objfile *objfile, enum search_domain kind,
+   gdb::function_view<expand_symtabs_symbol_matcher_ftype> sym_matcher)
 {
-  struct partial_symbol **psym;
-  struct partial_symbol **bound, **gbound, **sbound;
   int keep_going = 1;
   enum psymtab_search_status result = PST_SEARCHED_AND_NOT_FOUND;
   int i;
@@ -1335,30 +1298,30 @@ recursively_search_psymtabs (struct partial_symtab *ps,
        continue;
 
       r = recursively_search_psymtabs (ps->dependencies[i],
-                                      objfile, kind, sym_matcher, data);
+                                      objfile, kind, sym_matcher);
       if (r != 0)
        {
          ps->searched_flag = PST_SEARCHED_AND_FOUND;
-         return 1;
+         return true;
        }
     }
 
-  gbound = (objfile->global_psymbols.list
-           + ps->globals_offset + ps->n_global_syms);
-  sbound = (objfile->static_psymbols.list
-           + ps->statics_offset + ps->n_static_syms);
-  bound = gbound;
+  partial_symbol **gbound
+    = &objfile->global_psymbols[ps->globals_offset + ps->n_global_syms];
+  partial_symbol **sbound
+    = &objfile->static_psymbols[ps->statics_offset + ps->n_static_syms];
+  partial_symbol **bound = gbound;
 
   /* Go through all of the symbols stored in a partial
      symtab in one loop.  */
-  psym = objfile->global_psymbols.list + ps->globals_offset;
+  partial_symbol **psym = &objfile->global_psymbols[ps->globals_offset];
   while (keep_going)
     {
       if (psym >= bound)
        {
          if (bound == gbound && ps->n_static_syms != 0)
            {
-             psym = objfile->static_psymbols.list + ps->statics_offset;
+             psym = &objfile->static_psymbols[ps->statics_offset];
              bound = sbound;
            }
          else
@@ -1377,7 +1340,7 @@ recursively_search_psymtabs (struct partial_symtab *ps,
                   && PSYMBOL_CLASS (*psym) == LOC_BLOCK)
               || (kind == TYPES_DOMAIN
                   && PSYMBOL_CLASS (*psym) == LOC_TYPEDEF))
-             && (*sym_matcher) (SYMBOL_SEARCH_NAME (*psym), data))
+             && sym_matcher (SYMBOL_SEARCH_NAME (*psym)))
            {
              /* Found a match, so notify our caller.  */
              result = PST_SEARCHED_AND_FOUND;
@@ -1397,11 +1360,10 @@ recursively_search_psymtabs (struct partial_symtab *ps,
 static void
 psym_expand_symtabs_matching
   (struct objfile *objfile,
-   expand_symtabs_file_matcher_ftype *file_matcher,
-   expand_symtabs_symbol_matcher_ftype *symbol_matcher,
-   expand_symtabs_exp_notify_ftype *expansion_notify,
-   enum search_domain kind,
-   void *data)
+   gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher,
+   gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher,
+   gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify,
+   enum search_domain kind)
 {
   struct partial_symtab *ps;
 
@@ -1425,31 +1387,31 @@ psym_expand_symtabs_matching
 
       if (file_matcher)
        {
-         int match;
+         bool match;
 
          if (ps->anonymous)
            continue;
 
-         match = (*file_matcher) (ps->filename, data, 0);
+         match = file_matcher (ps->filename, false);
          if (!match)
            {
              /* Before we invoke realpath, which can get expensive when many
                 files are involved, do a quick comparison of the basenames.  */
              if (basenames_may_differ
-                 || (*file_matcher) (lbasename (ps->filename), data, 1))
-               match = (*file_matcher) (psymtab_to_fullname (ps), data, 0);
+                 || file_matcher (lbasename (ps->filename), true))
+               match = file_matcher (psymtab_to_fullname (ps), false);
            }
          if (!match)
            continue;
        }
 
-      if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher, data))
+      if (recursively_search_psymtabs (ps, objfile, kind, symbol_matcher))
        {
          struct compunit_symtab *symtab =
            psymtab_to_symtab (objfile, ps);
 
          if (expansion_notify != NULL)
-           expansion_notify (symtab, data);
+           expansion_notify (symtab);
        }
     }
 }
@@ -1484,27 +1446,22 @@ const struct quick_symbol_functions psym_functions =
 
 \f
 
-/* This compares two partial symbols by names, using strcmp_iw_ordered
-   for the comparison.  */
-
-static int
-compare_psymbols (const void *s1p, const void *s2p)
-{
-  struct partial_symbol *const *s1 = (struct partial_symbol * const*) s1p;
-  struct partial_symbol *const *s2 = (struct partial_symbol * const*) s2p;
-
-  return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1),
-                           SYMBOL_SEARCH_NAME (*s2));
-}
-
 static void
 sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
 {
   /* Sort the global list; don't sort the static list.  */
+  auto begin = objfile->global_psymbols.begin ();
+  std::advance (begin, pst->globals_offset);
+
+  /* The psymbols for this partial_symtab are currently at the end of the
+     vector.  */
+  auto end = objfile->global_psymbols.end ();
 
-  qsort (objfile->global_psymbols.list + pst->globals_offset,
-        pst->n_global_syms, sizeof (struct partial_symbol *),
-        compare_psymbols);
+  std::sort (begin, end, [] (partial_symbol *s1, partial_symbol *s2)
+    {
+      return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (s1),
+                               SYMBOL_SEARCH_NAME (s2)) < 0;
+    });
 }
 
 /* Allocate and partially fill a partial symtab.  It will be
@@ -1515,16 +1472,17 @@ sort_pst_symbols (struct objfile *objfile, struct partial_symtab *pst)
 struct partial_symtab *
 start_psymtab_common (struct objfile *objfile,
                      const char *filename,
-                     CORE_ADDR textlow, struct partial_symbol **global_syms,
-                     struct partial_symbol **static_syms)
+                     CORE_ADDR textlow,
+                     std::vector<partial_symbol *> &global_psymbols,
+                     std::vector<partial_symbol *> &static_psymbols)
 {
   struct partial_symtab *psymtab;
 
   psymtab = allocate_psymtab (filename, objfile);
   psymtab->textlow = textlow;
   psymtab->texthigh = psymtab->textlow;                /* default */
-  psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
-  psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
+  psymtab->globals_offset = global_psymbols.size ();
+  psymtab->statics_offset = static_psymbols.size ();
   return psymtab;
 }
 
@@ -1533,12 +1491,8 @@ start_psymtab_common (struct objfile *objfile,
 void
 end_psymtab_common (struct objfile *objfile, struct partial_symtab *pst)
 {
-  pst->n_global_syms
-    = objfile->global_psymbols.next - (objfile->global_psymbols.list
-                                      + pst->globals_offset);
-  pst->n_static_syms
-    = objfile->static_psymbols.next - (objfile->static_psymbols.list
-                                      + pst->statics_offset);
+  pst->n_global_syms = objfile->global_psymbols.size () - pst->globals_offset;
+  pst->n_static_syms = objfile->static_psymbols.size () - pst->statics_offset;
 
   sort_pst_symbols (objfile, pst);
 }
@@ -1576,7 +1530,7 @@ psymbol_compare (const void *addr1, const void *addr2, int length)
   struct partial_symbol *sym1 = (struct partial_symbol *) addr1;
   struct partial_symbol *sym2 = (struct partial_symbol *) addr2;
 
-  return (memcmp (&sym1->ginfo.value, &sym1->ginfo.value,
+  return (memcmp (&sym1->ginfo.value, &sym2->ginfo.value,
                   sizeof (sym1->ginfo.value)) == 0
          && sym1->ginfo.language == sym2->ginfo.language
           && PSYMBOL_DOMAIN (sym1) == PSYMBOL_DOMAIN (sym2)
@@ -1620,12 +1574,12 @@ psymbol_bcache_get_bcache (struct psymbol_bcache *bcache)
    to BCACHE's copy of the symbol.  If optional ADDED is not NULL, return
    1 in case of new entry or 0 if returning an old entry.  */
 
-static const struct partial_symbol *
+static struct partial_symbol *
 psymbol_bcache_full (struct partial_symbol *sym,
                      struct psymbol_bcache *bcache,
                      int *added)
 {
-  return ((const struct partial_symbol *)
+  return ((struct partial_symbol *)
          bcache_full (sym, sizeof (struct partial_symbol), bcache->bcache,
                       added));
 }
@@ -1636,7 +1590,7 @@ psymbol_bcache_full (struct partial_symbol *sym,
    structure.  In other words, having two symbols with the same name but
    different domain (or address) is possible and correct.  */
 
-static const struct partial_symbol *
+static struct partial_symbol *
 add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
                       domain_enum domain,
                       enum address_class theclass,
@@ -1663,44 +1617,14 @@ add_psymbol_to_bcache (const char *name, int namelength, int copy_name,
   return psymbol_bcache_full (&psymbol, objfile->psymbol_cache, added);
 }
 
-/* Increase the space allocated for LISTP, which is probably
-   global_psymbols or static_psymbols.  This space will eventually
-   be freed in free_objfile().  */
-
-static void
-extend_psymbol_list (struct psymbol_allocation_list *listp,
-                    struct objfile *objfile)
-{
-  int new_size;
-
-  if (listp->size == 0)
-    {
-      new_size = 255;
-      listp->list = XNEWVEC (struct partial_symbol *, new_size);
-    }
-  else
-    {
-      new_size = listp->size * 2;
-      listp->list = (struct partial_symbol **)
-       xrealloc ((char *) listp->list,
-                 new_size * sizeof (struct partial_symbol *));
-    }
-  /* Next assumes we only went one over.  Should be good if
-     program works correctly.  */
-  listp->next = listp->list + listp->size;
-  listp->size = new_size;
-}
-
 /* Helper function, adds partial symbol to the given partial symbol list.  */
 
 static void
-append_psymbol_to_list (struct psymbol_allocation_list *list,
-                       const struct partial_symbol *psym,
+append_psymbol_to_list (std::vector<partial_symbol *> *list,
+                       struct partial_symbol *psym,
                        struct objfile *objfile)
 {
-  if (list->next >= list->list + list->size)
-    extend_psymbol_list (list, objfile);
-  *list->next++ = (struct partial_symbol *) psym;
+  list->push_back (psym);
   OBJSTAT (objfile, n_psyms++);
 }
 
@@ -1714,11 +1638,11 @@ void
 add_psymbol_to_list (const char *name, int namelength, int copy_name,
                     domain_enum domain,
                     enum address_class theclass,
-                    struct psymbol_allocation_list *list,
+                    std::vector<partial_symbol *> *list,
                     CORE_ADDR coreaddr,
                     enum language language, struct objfile *objfile)
 {
-  const struct partial_symbol *psym;
+  struct partial_symbol *psym;
 
   int added;
 
@@ -1741,31 +1665,14 @@ void
 init_psymbol_list (struct objfile *objfile, int total_symbols)
 {
   /* Free any previously allocated psymbol lists.  */
-
-  if (objfile->global_psymbols.list)
-    xfree (objfile->global_psymbols.list);
-  if (objfile->static_psymbols.list)
-    xfree (objfile->static_psymbols.list);
+  objfile->global_psymbols.clear ();
+  objfile->static_psymbols.clear ();
 
   /* Current best guess is that approximately a twentieth
      of the total symbols (in a debugging file) are global or static
      oriented symbols, then multiply that by slop factor of two.  */
-
-  objfile->global_psymbols.size = total_symbols / 10;
-  objfile->static_psymbols.size = total_symbols / 10;
-
-  if (objfile->global_psymbols.size > 0)
-    {
-      objfile->global_psymbols.next =
-       objfile->global_psymbols.list =
-         XNEWVEC (struct partial_symbol *, objfile->global_psymbols.size);
-    }
-  if (objfile->static_psymbols.size > 0)
-    {
-      objfile->static_psymbols.next =
-       objfile->static_psymbols.list =
-         XNEWVEC (struct partial_symbol *, objfile->static_psymbols.size);
-    }
+  objfile->global_psymbols.reserve (total_symbols / 10);
+  objfile->static_psymbols.reserve (total_symbols / 10);
 }
 
 struct partial_symtab *
@@ -1844,44 +1751,6 @@ discard_psymtab (struct objfile *objfile, struct partial_symtab *pst)
   objfile->free_psymtabs = pst;
 }
 
-/* An object of this type is passed to discard_psymtabs_upto.  */
-
-struct psymtab_state
-{
-  /* The objfile where psymtabs are discarded.  */
-
-  struct objfile *objfile;
-
-  /* The first psymtab to save.  */
-
-  struct partial_symtab *save;
-};
-
-/* A cleanup function used by make_cleanup_discard_psymtabs.  */
-
-static void
-discard_psymtabs_upto (void *arg)
-{
-  struct psymtab_state *state = (struct psymtab_state *) arg;
-
-  while (state->objfile->psymtabs != state->save)
-    discard_psymtab (state->objfile, state->objfile->psymtabs);
-}
-
-/* Return a new cleanup that discards all psymtabs created in OBJFILE
-   after this function is called.  */
-
-struct cleanup *
-make_cleanup_discard_psymtabs (struct objfile *objfile)
-{
-  struct psymtab_state *state = XNEW (struct psymtab_state);
-
-  state->objfile = objfile;
-  state->save = objfile->psymtabs;
-
-  return make_cleanup_dtor (discard_psymtabs_upto, state, xfree);
-}
-
 \f
 
 /* We need to pass a couple of items to the addrmap_foreach function,
@@ -1904,9 +1773,10 @@ struct dump_psymtab_addrmap_data
 static int
 dump_psymtab_addrmap_1 (void *datap, CORE_ADDR start_addr, void *obj)
 {
-  struct dump_psymtab_addrmap_data *data = datap;
+  struct dump_psymtab_addrmap_data *data
+    = (struct dump_psymtab_addrmap_data *) datap;
   struct gdbarch *gdbarch = get_objfile_arch (data->objfile);
-  struct partial_symtab *addrmap_psymtab = obj;
+  struct partial_symtab *addrmap_psymtab = (struct partial_symtab *) obj;
   const char *psymtab_address_or_end = NULL;
 
   QUIT;
@@ -1942,8 +1812,9 @@ dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
 {
   struct dump_psymtab_addrmap_data addrmap_dump_data;
 
-  if (psymtab == NULL
-      || psymtab->psymtabs_addrmap_supported)
+  if ((psymtab == NULL
+       || psymtab->psymtabs_addrmap_supported)
+      && objfile->psymtabs_addrmap != NULL)
     {
       addrmap_dump_data.objfile = objfile;
       addrmap_dump_data.psymtab = psymtab;
@@ -1957,75 +1828,165 @@ dump_psymtab_addrmap (struct objfile *objfile, struct partial_symtab *psymtab,
 }
 
 static void
-maintenance_print_psymbols (char *args, int from_tty)
+maintenance_print_psymbols (const char *args, int from_tty)
 {
-  char **argv;
-  struct ui_file *outfile;
-  struct cleanup *cleanups;
-  char *symname = NULL;
-  char *filename = DEV_TTY;
+  struct ui_file *outfile = gdb_stdout;
+  char *address_arg = NULL, *source_arg = NULL, *objfile_arg = NULL;
   struct objfile *objfile;
   struct partial_symtab *ps;
+  int i, outfile_idx, found;
+  CORE_ADDR pc = 0;
+  struct obj_section *section = NULL;
 
   dont_repeat ();
 
-  if (args == NULL)
-    {
-      error (_("\
-print-psymbols takes an output file name and optional symbol file name"));
-    }
-  argv = gdb_buildargv (args);
-  cleanups = make_cleanup_freeargv (argv);
+  gdb_argv argv (args);
 
-  if (argv[0] != NULL)
+  for (i = 0; argv != NULL && argv[i] != NULL; ++i)
     {
-      filename = argv[0];
-      /* If a second arg is supplied, it is a source file name to match on.  */
-      if (argv[1] != NULL)
+      if (strcmp (argv[i], "-pc") == 0)
+       {
+         if (argv[i + 1] == NULL)
+           error (_("Missing pc value"));
+         address_arg = argv[++i];
+       }
+      else if (strcmp (argv[i], "-source") == 0)
+       {
+         if (argv[i + 1] == NULL)
+           error (_("Missing source file"));
+         source_arg = argv[++i];
+       }
+      else if (strcmp (argv[i], "-objfile") == 0)
+       {
+         if (argv[i + 1] == NULL)
+           error (_("Missing objfile name"));
+         objfile_arg = argv[++i];
+       }
+      else if (strcmp (argv[i], "--") == 0)
+       {
+         /* End of options.  */
+         ++i;
+         break;
+       }
+      else if (argv[i][0] == '-')
        {
-         symname = argv[1];
+         /* Future proofing: Don't allow OUTFILE to begin with "-".  */
+         error (_("Unknown option: %s"), argv[i]);
        }
+      else
+       break;
     }
+  outfile_idx = i;
 
-  filename = tilde_expand (filename);
-  make_cleanup (xfree, filename);
+  if (address_arg != NULL && source_arg != NULL)
+    error (_("Must specify at most one of -pc and -source"));
 
-  outfile = gdb_fopen (filename, FOPEN_WT);
-  if (outfile == NULL)
-    perror_with_name (filename);
-  make_cleanup_ui_file_delete (outfile);
+  stdio_file arg_outfile;
 
-  ALL_OBJFILES (objfile)
-  {
-    fprintf_filtered (outfile, "\nPartial symtabs for objfile %s\n",
-                     objfile_name (objfile));
+  if (argv != NULL && argv[outfile_idx] != NULL)
+    {
+      if (argv[outfile_idx + 1] != NULL)
+       error (_("Junk at end of command"));
+      gdb::unique_xmalloc_ptr<char> outfile_name
+       (tilde_expand (argv[outfile_idx]));
+      if (!arg_outfile.open (outfile_name.get (), FOPEN_WT))
+       perror_with_name (outfile_name.get ());
+      outfile = &arg_outfile;
+    }
 
-    ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
+  if (address_arg != NULL)
     {
+      pc = parse_and_eval_address (address_arg);
+      /* If we fail to find a section, that's ok, try the lookup anyway.  */
+      section = find_pc_section (pc);
+    }
+
+  found = 0;
+  ALL_OBJFILES (objfile)
+    {
+      int printed_objfile_header = 0;
+      int print_for_objfile = 1;
+
       QUIT;
-      if (symname == NULL || filename_cmp (symname, ps->filename) == 0)
+      if (objfile_arg != NULL)
+       print_for_objfile
+         = compare_filenames_for_search (objfile_name (objfile),
+                                         objfile_arg);
+      if (!print_for_objfile)
+       continue;
+
+      if (address_arg != NULL)
        {
-         dump_psymtab (objfile, ps, outfile);
-         dump_psymtab_addrmap (objfile, ps, outfile);
+         struct bound_minimal_symbol msymbol = { NULL, NULL };
+
+         /* We don't assume each pc has a unique objfile (this is for
+            debugging).  */
+         ps = find_pc_sect_psymtab (objfile, pc, section, msymbol);
+         if (ps != NULL)
+           {
+             if (!printed_objfile_header)
+               {
+                 outfile->printf ("\nPartial symtabs for objfile %s\n",
+                                 objfile_name (objfile));
+                 printed_objfile_header = 1;
+               }
+             dump_psymtab (objfile, ps, outfile);
+             dump_psymtab_addrmap (objfile, ps, outfile);
+             found = 1;
+           }
        }
-    }
+      else
+       {
+         ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, ps)
+           {
+             int print_for_source = 0;
 
-    /* If we're printing all symbols dump the full addrmap.  */
+             QUIT;
+             if (source_arg != NULL)
+               {
+                 print_for_source
+                   = compare_filenames_for_search (ps->filename, source_arg);
+                 found = 1;
+               }
+             if (source_arg == NULL
+                 || print_for_source)
+               {
+                 if (!printed_objfile_header)
+                   {
+                     outfile->printf ("\nPartial symtabs for objfile %s\n",
+                                      objfile_name (objfile));
+                     printed_objfile_header = 1;
+                   }
+                 dump_psymtab (objfile, ps, outfile);
+                 dump_psymtab_addrmap (objfile, ps, outfile);
+               }
+           }
+       }
 
-    if (symname == NULL)
-      {
-       fprintf_filtered (outfile, "\n");
-       dump_psymtab_addrmap (objfile, NULL, outfile);
-      }
-  }
+      /* If we're printing all the objfile's symbols dump the full addrmap.  */
+
+      if (address_arg == NULL
+         && source_arg == NULL
+         && objfile->psymtabs_addrmap != NULL)
+       {
+         outfile->puts ("\n");
+         dump_psymtab_addrmap (objfile, NULL, outfile);
+       }
+    }
 
-  do_cleanups (cleanups);
+  if (!found)
+    {
+      if (address_arg != NULL)
+       error (_("No partial symtab for address: %s"), address_arg);
+      if (source_arg != NULL)
+       error (_("No partial symtab for source file: %s"), source_arg);
+    }
 }
 
 /* List all the partial symbol tables whose names match REGEXP (optional).  */
 
 static void
-maintenance_info_psymtabs (char *regexp, int from_tty)
+maintenance_info_psymtabs (const char *regexp, int from_tty)
 {
   struct program_space *pspace;
   struct objfile *objfile;
@@ -2082,9 +2043,10 @@ maintenance_info_psymtabs (char *regexp, int from_tty)
              printf_filtered ("    globals ");
              if (psymtab->n_global_syms)
                {
+                 auto p = &objfile->global_psymbols[psymtab->globals_offset];
+
                  printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
-                                  host_address_to_string (objfile->global_psymbols.list
-                                   + psymtab->globals_offset),
+                                  host_address_to_string (p),
                                   psymtab->n_global_syms);
                }
              else
@@ -2092,9 +2054,10 @@ maintenance_info_psymtabs (char *regexp, int from_tty)
              printf_filtered ("    statics ");
              if (psymtab->n_static_syms)
                {
+                 auto p = &objfile->static_psymbols[psymtab->statics_offset];
+
                  printf_filtered ("(* (struct partial_symbol **) %s @ %d)\n",
-                                  host_address_to_string (objfile->static_psymbols.list
-                                   + psymtab->statics_offset),
+                                  host_address_to_string (p),
                                   psymtab->n_static_syms);
                }
              else
@@ -2131,10 +2094,9 @@ maintenance_info_psymtabs (char *regexp, int from_tty)
 /* Check consistency of currently expanded psymtabs vs symtabs.  */
 
 static void
-maintenance_check_psymtabs (char *ignore, int from_tty)
+maintenance_check_psymtabs (const char *ignore, int from_tty)
 {
   struct symbol *sym;
-  struct partial_symbol **psym;
   struct compunit_symtab *cust = NULL;
   struct partial_symtab *ps;
   const struct blockvector *bv;
@@ -2169,7 +2131,7 @@ maintenance_check_psymtabs (char *ignore, int from_tty)
       continue;
     bv = COMPUNIT_BLOCKVECTOR (cust);
     b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
-    psym = objfile->static_psymbols.list + ps->statics_offset;
+    partial_symbol **psym = &objfile->static_psymbols[ps->statics_offset];
     length = ps->n_static_syms;
     while (length--)
       {
@@ -2186,7 +2148,7 @@ maintenance_check_psymtabs (char *ignore, int from_tty)
        psym++;
       }
     b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
-    psym = objfile->global_psymbols.list + ps->globals_offset;
+    psym = &objfile->global_psymbols[ps->globals_offset];
     length = ps->n_global_syms;
     while (length--)
       {
@@ -2220,17 +2182,18 @@ maintenance_check_psymtabs (char *ignore, int from_tty)
   }
 }
 
-\f
-
-extern initialize_file_ftype _initialize_psymtab;
-
 void
 _initialize_psymtab (void)
 {
   add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, _("\
 Print dump of current partial symbol definitions.\n\
-Entries in the partial symbol table are dumped to file OUTFILE.\n\
-If a SOURCE file is specified, dump only that file's partial symbols."),
+Usage: mt print psymbols [-objfile objfile] [-pc address] [--] [outfile]\n\
+       mt print psymbols [-objfile objfile] [-source source] [--] [outfile]\n\
+Entries in the partial symbol table are dumped to file OUTFILE,\n\
+or the terminal if OUTFILE is unspecified.\n\
+If ADDRESS is provided, dump only the file for that address.\n\
+If SOURCE is provided, dump only that file's symbols.\n\
+If OBJFILE is provided, dump only that file's minimal symbols."),
           &maintenanceprintlist);
 
   add_cmd ("psymtabs", class_maintenance, maintenance_info_psymtabs, _("\
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