X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fmacroscope.c;h=9a1e7fe633bef24e68b6b2b1f0ad8b4784093d5e;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=b482068637cd05a4c53c1de26a8ad51bf62ffc9c;hpb=568f87394bc2b35d5c4aeedc023fcaeb56138856;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/macroscope.c b/gdb/macroscope.c
index b482068637..9a1e7fe633 100644
--- a/gdb/macroscope.c
+++ b/gdb/macroscope.c
@@ -1,12 +1,12 @@
/* Functions for deciding which macros are currently in scope.
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@@ -15,9 +15,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see . */
#include "defs.h"
@@ -29,21 +27,30 @@
#include "inferior.h"
#include "complaints.h"
+/* A table of user-defined macros. Unlike the macro tables used for
+ symtabs, this one uses xmalloc for all its allocation, not an
+ obstack, and it doesn't bcache anything; it just xmallocs things. So
+ it's perfectly possible to remove things from this, or redefine
+ things. */
+struct macro_table *macro_user_macros;
-struct macro_scope *
+
+gdb::unique_xmalloc_ptr
sal_macro_scope (struct symtab_and_line sal)
{
- struct macro_source_file *main, *inclusion;
- struct macro_scope *ms;
+ struct macro_source_file *main_file, *inclusion;
+ struct compunit_symtab *cust;
- if (! sal.symtab
- || ! sal.symtab->macro_table)
- return 0;
+ if (sal.symtab == NULL)
+ return NULL;
+ cust = SYMTAB_COMPUNIT (sal.symtab);
+ if (COMPUNIT_MACRO_TABLE (cust) == NULL)
+ return NULL;
- ms = (struct macro_scope *) xmalloc (sizeof (*ms));
+ gdb::unique_xmalloc_ptr ms (XNEW (struct macro_scope));
- main = macro_main (sal.symtab->macro_table);
- inclusion = macro_lookup_inclusion (main, sal.symtab->filename);
+ main_file = macro_main (COMPUNIT_MACRO_TABLE (cust));
+ inclusion = macro_lookup_inclusion (main_file, sal.symtab->filename);
if (inclusion)
{
@@ -66,36 +73,41 @@ sal_macro_scope (struct symtab_and_line sal)
For the time being, though, we'll just treat these as
occurring at the end of the main source file. */
- ms->file = main;
+ ms->file = main_file;
ms->line = -1;
- complaint (&symfile_complaints,
- "symtab found for `%s', but that file\n"
- "is not covered in the compilation unit's macro information",
- sal.symtab->filename);
+ complaint (_("symtab found for `%s', but that file\n"
+ "is not covered in the compilation unit's macro information"),
+ symtab_to_filename_for_display (sal.symtab));
}
return ms;
}
-struct macro_scope *
+gdb::unique_xmalloc_ptr
+user_macro_scope (void)
+{
+ gdb::unique_xmalloc_ptr ms (XNEW (struct macro_scope));
+ ms->file = macro_main (macro_user_macros);
+ ms->line = -1;
+ return ms;
+}
+
+gdb::unique_xmalloc_ptr
default_macro_scope (void)
{
struct symtab_and_line sal;
- struct macro_source_file *main;
- struct macro_scope *ms;
-
- /* If there's a selected frame, use its PC. */
- if (selected_frame)
- sal = find_pc_line (selected_frame->pc, 0);
-
- /* If the target has any registers at all, then use its PC. Why we
- would have registers but no stack, I'm not sure. */
- else if (target_has_registers)
- sal = find_pc_line (read_pc (), 0);
-
- /* If all else fails, fall back to the current listing position. */
+ gdb::unique_xmalloc_ptr ms;
+ struct frame_info *frame;
+ CORE_ADDR pc;
+
+ /* If there's a selected frame, use its PC. */
+ frame = deprecated_safe_get_selected_frame ();
+ if (frame && get_frame_pc_if_available (frame, &pc))
+ sal = find_pc_line (pc, 0);
+
+ /* Fall back to the current listing position. */
else
{
/* Don't call select_source_symtab here. That can raise an
@@ -116,7 +128,11 @@ default_macro_scope (void)
sal.line = cursal.line;
}
- return sal_macro_scope (sal);
+ ms = sal_macro_scope (sal);
+ if (! ms)
+ ms = user_macro_scope ();
+
+ return ms;
}
@@ -127,6 +143,20 @@ struct macro_definition *
standard_macro_lookup (const char *name, void *baton)
{
struct macro_scope *ms = (struct macro_scope *) baton;
+ struct macro_definition *result;
- return macro_lookup_definition (ms->file, ms->line, name);
+ /* Give user-defined macros priority over all others. */
+ result = macro_lookup_definition (macro_main (macro_user_macros), -1, name);
+ if (! result)
+ result = macro_lookup_definition (ms->file, ms->line, name);
+ return result;
+}
+
+void _initialize_macroscope ();
+void
+_initialize_macroscope ()
+{
+ macro_user_macros = new_macro_table (NULL, NULL, NULL);
+ macro_set_main (macro_user_macros, "");
+ macro_allow_redefinitions (macro_user_macros);
}