gdbserver: make aarch64_write_goto_address static

[deliverable/binutils-gdb.git] / gdb / source.c

diff --git a/gdb/source.c b/gdb/source.c
index 2ec3fbe7054eb14a6a3451e912dc9bbe4ecbcb45..1bc98d376e55ce67b5d78c88b39b1960d16cbf2a 100644 (file)
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -1,5 +1,5 @@
 /* List lines of source files for GDB, the GNU debugger.
-   Copyright (C) 1986-2019 Free Software Foundation, Inc.
+   Copyright (C) 1986-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -47,6 +47,7 @@
 #include "gdbsupport/pathstuff.h"
 #include "source-cache.h"
 #include "cli/cli-style.h"
+#include "observable.h"
 
 #define OPEN_MODE (O_RDONLY | O_BINARY)
 #define FDOPEN_MODE FOPEN_RB
@@ -71,13 +72,39 @@ static struct substitute_path_rule *substitute_path_rules = NULL;
 
 struct current_source_location
 {
+public:
+
+  current_source_location () = default;
+
+  /* Set the value.  */
+  void set (struct symtab *s, int l)
+  {
+    m_symtab = s;
+    m_line = l;
+    gdb::observers::current_source_symtab_and_line_changed.notify ();
+  }
+
+  /* Get the symtab.  */
+  struct symtab *symtab () const
+  {
+    return m_symtab;
+  }
+
+  /* Get the line number.  */
+  int line () const
+  {
+    return m_line;
+  }
+
+private:
+
   /* Symtab of default file for listing lines of.  */
 
-  struct symtab *symtab = nullptr;
+  struct symtab *m_symtab = nullptr;
 
   /* Default next line to list.  */
 
-  int line = 0;
+  int m_line = 0;
 };
 
 static program_space_key<current_source_location> current_source_key;
@@ -191,8 +218,8 @@ get_current_source_symtab_and_line (void)
   current_source_location *loc = get_source_location (current_program_space);
 
   cursal.pspace = current_program_space;
-  cursal.symtab = loc->symtab;
-  cursal.line = loc->line;
+  cursal.symtab = loc->symtab ();
+  cursal.line = loc->line ();
   cursal.pc = 0;
   cursal.end = 0;
   
@@ -215,7 +242,7 @@ set_default_source_symtab_and_line (void)
 
   /* Pull in a current source symtab if necessary.  */
   current_source_location *loc = get_source_location (current_program_space);
-  if (loc->symtab == nullptr)
+  if (loc->symtab () == nullptr)
     select_source_symtab (0);
 }
 
@@ -232,13 +259,12 @@ set_current_source_symtab_and_line (const symtab_and_line &sal)
   current_source_location *loc = get_source_location (sal.pspace);
 
   cursal.pspace = sal.pspace;
-  cursal.symtab = loc->symtab;
-  cursal.line = loc->line;
+  cursal.symtab = loc->symtab ();
+  cursal.line = loc->line ();
   cursal.pc = 0;
   cursal.end = 0;
 
-  loc->symtab = sal.symtab;
-  loc->line = sal.line;
+  loc->set (sal.symtab, sal.line);
 
   /* Force the next "list" to center around the current line.  */
   clear_lines_listed_range ();
@@ -252,8 +278,7 @@ void
 clear_current_source_symtab_and_line (void)
 {
   current_source_location *loc = get_source_location (current_program_space);
-  loc->symtab = nullptr;
-  loc->line = 0;
+  loc->set (nullptr, 0);
 }
 
 /* See source.h.  */
@@ -265,13 +290,12 @@ select_source_symtab (struct symtab *s)
     {
       current_source_location *loc
        = get_source_location (SYMTAB_PSPACE (s));
-      loc->symtab = s;
-      loc->line = 1;
+      loc->set (s, 1);
       return;
     }
 
   current_source_location *loc = get_source_location (current_program_space);
-  if (loc->symtab != nullptr)
+  if (loc->symtab () != nullptr)
     return;
 
   /* Make the default place to list be the function `main'
@@ -280,15 +304,14 @@ select_source_symtab (struct symtab *s)
   if (bsym.symbol != nullptr && SYMBOL_CLASS (bsym.symbol) == LOC_BLOCK)
     {
       symtab_and_line sal = find_function_start_sal (bsym.symbol, true);
-      loc->symtab = sal.symtab;
-      loc->line = std::max (sal.line - (lines_to_list - 1), 1);
+      loc->set (sal.symtab, std::max (sal.line - (lines_to_list - 1), 1));
       return;
     }
 
   /* Alright; find the last file in the symtab list (ignoring .h's
      and namespace symtabs).  */
 
-  loc->line = 1;
+  struct symtab *new_symtab = nullptr;
 
   for (objfile *ofp : current_program_space->objfiles ())
     {
@@ -301,12 +324,13 @@ select_source_symtab (struct symtab *s)
 
              if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
                                || strcmp (name, "<<C++-namespaces>>") == 0)))
-               loc->symtab = symtab;
+               new_symtab = symtab;
            }
        }
     }
 
-  if (loc->symtab != nullptr)
+  loc->set (new_symtab, 1);
+  if (new_symtab != nullptr)
     return;
 
   for (objfile *objfile : current_program_space->objfiles ())
@@ -314,10 +338,13 @@ select_source_symtab (struct symtab *s)
       if (objfile->sf)
        s = objfile->sf->qf->find_last_source_symtab (objfile);
       if (s)
-       loc->symtab = s;
+       new_symtab = s;
+    }
+  if (new_symtab != nullptr)
+    {
+      loc->set (new_symtab,1);
+      return;
     }
-  if (loc->symtab != nullptr)
-    return;
 
   error (_("Can't find a default source file"));
 }
@@ -540,8 +567,7 @@ add_path (const char *dirname, char **which_path, int parse_separators)
        new_name_holder.reset (concat (name, ".", (char *) NULL));
 #endif
       else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$')
-       new_name_holder.reset (concat (current_directory, SLASH_STRING, name,
-                                      (char *) NULL));
+       new_name_holder = gdb_abspath (name);
       else
        new_name_holder.reset (savestring (name, p - name));
       name = new_name_holder.get ();
@@ -642,7 +668,7 @@ info_source_command (const char *ignore, int from_tty)
 {
   current_source_location *loc
     = get_source_location (current_program_space);
-  struct symtab *s = loc->symtab;
+  struct symtab *s = loc->symtab ();
   struct compunit_symtab *cust;
 
   if (!s)
@@ -1204,9 +1230,9 @@ print_source_lines_base (struct symtab *s, int line, int stopline,
   current_source_location *loc
     = get_source_location (current_program_space);
 
-  loc->symtab = s;
-  loc->line = line;
+  loc->set (s, line);
   first_line_listed = line;
+  last_line_listed = line;
 
   /* If printing of source lines is disabled, just print file and line
      number.  */
@@ -1295,17 +1321,18 @@ print_source_lines_base (struct symtab *s, int line, int stopline,
     }
 
   const char *iter = lines.c_str ();
+  int new_lineno = loc->line ();
   while (nlines-- > 0 && *iter != '\0')
     {
       char buf[20];
 
-      last_line_listed = loc->line;
+      last_line_listed = loc->line ();
       if (flags & PRINT_SOURCE_LINES_FILENAME)
         {
           uiout->text (symtab_to_filename_for_display (s));
           uiout->text (":");
         }
-      xsnprintf (buf, sizeof (buf), "%d\t", loc->line++);
+      xsnprintf (buf, sizeof (buf), "%d\t", new_lineno++);
       uiout->text (buf);
 
       while (*iter != '\0')
@@ -1360,6 +1387,8 @@ print_source_lines_base (struct symtab *s, int line, int stopline,
        }
       uiout->text ("\n");
     }
+
+  loc->set (loc->symtab (), new_lineno);
 }
 \f
 
@@ -1399,12 +1428,12 @@ info_line_command (const char *arg, int from_tty)
     {
       current_source_location *loc
        = get_source_location (current_program_space);
-      curr_sal.symtab = loc->symtab;
+      curr_sal.symtab = loc->symtab ();
       curr_sal.pspace = current_program_space;
       if (last_line_listed != 0)
        curr_sal.line = last_line_listed;
       else
-       curr_sal.line = loc->line;
+       curr_sal.line = loc->line ();
 
       sals = curr_sal;
     }
@@ -1508,12 +1537,12 @@ search_command_helper (const char *regex, int from_tty, bool forward)
 
   current_source_location *loc
     = get_source_location (current_program_space);
-  if (loc->symtab == nullptr)
+  if (loc->symtab () == nullptr)
     select_source_symtab (0);
 
-  scoped_fd desc (open_source_file (loc->symtab));
+  scoped_fd desc (open_source_file (loc->symtab ()));
   if (desc.get () < 0)
-    perror_with_name (symtab_to_filename_for_display (loc->symtab));
+    perror_with_name (symtab_to_filename_for_display (loc->symtab ()));
 
   int line = (forward
              ? last_line_listed + 1
@@ -1521,12 +1550,12 @@ search_command_helper (const char *regex, int from_tty, bool forward)
 
   const std::vector<off_t> *offsets;
   if (line < 1
-      || !g_source_cache.get_line_charpos (loc->symtab, &offsets)
+      || !g_source_cache.get_line_charpos (loc->symtab (), &offsets)
       || line > offsets->size ())
     error (_("Expression not found"));
 
   if (lseek (desc.get (), (*offsets)[line - 1], 0) < 0)
-    perror_with_name (symtab_to_filename_for_display (loc->symtab));
+    perror_with_name (symtab_to_filename_for_display (loc->symtab ()));
 
   gdb_file_up stream = desc.to_file (FDOPEN_MODE);
   clearerr (stream.get ());
@@ -1561,9 +1590,9 @@ search_command_helper (const char *regex, int from_tty, bool forward)
       if (re_exec (buf.data ()) > 0)
        {
          /* Match!  */
-         print_source_lines (loc->symtab, line, line + 1, 0);
+         print_source_lines (loc->symtab (), line, line + 1, 0);
          set_internalvar_integer (lookup_internalvar ("_"), line);
-         loc->line = std::max (line - lines_to_list / 2, 1);
+         loc->set (loc->symtab (), std::max (line - lines_to_list / 2, 1));
          return;
        }
 
@@ -1577,7 +1606,7 @@ search_command_helper (const char *regex, int from_tty, bool forward)
          if (fseek (stream.get (), (*offsets)[line - 1], 0) < 0)
            {
              const char *filename
-               = symtab_to_filename_for_display (loc->symtab);
+               = symtab_to_filename_for_display (loc->symtab ());
              perror_with_name (filename);
            }
        }