/* Output dbx-format symbol table information from GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 Free Software Foundation, Inc.
This file is part of GCC.
#include "debug.h"
#include "function.h"
#include "target.h"
+#include "common/common-target.h"
#include "langhooks.h"
#include "obstack.h"
#include "expr.h"
+#include "cgraph.h"
#ifdef XCOFF_DEBUGGING_INFO
#include "xcoffout.h"
#endif
-#define DBXOUT_DECR_NESTING \
- if (--debug_nesting == 0 && symbol_queue_index > 0) \
- { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); }
-
-#define DBXOUT_DECR_NESTING_AND_RETURN(x) \
- do {--debug_nesting; return (x);} while (0)
-
#ifndef ASM_STABS_OP
# ifdef XCOFF_DEBUGGING_INFO
# define ASM_STABS_OP "\t.stabx\t"
static void dbxout_global_decl (tree);
static void dbxout_type_decl (tree, int);
static void dbxout_handle_pch (unsigned);
+static void debug_free_queue (void);
\f
/* The debug hooks structure. */
#if defined (DBX_DEBUGGING_INFO)
dbxout_handle_pch, /* handle_pch */
debug_nothing_rtx, /* var_location */
debug_nothing_void, /* switch_text_section */
- debug_nothing_tree, /* direct_call */
- debug_nothing_tree_int, /* virtual_call_token */
- debug_nothing_rtx_rtx, /* copy_call_info */
- debug_nothing_uid, /* virtual_call */
debug_nothing_tree_tree, /* set_name */
0, /* start_end_main_source_file */
TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */
dbxout_handle_pch, /* handle_pch */
debug_nothing_rtx, /* var_location */
debug_nothing_void, /* switch_text_section */
- debug_nothing_tree, /* direct_call */
- debug_nothing_tree_int, /* virtual_call_token */
- debug_nothing_rtx_rtx, /* copy_call_info */
- debug_nothing_uid, /* virtual_call */
debug_nothing_tree_tree, /* set_name */
0, /* start_end_main_source_file */
TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */
obstack_free (&stabstr_ob, str);
}
+#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
+
+/* When -gused is used, emit debug info for only used symbols. But in
+ addition to the standard intercepted debug_hooks there are some
+ direct calls into this file, i.e., dbxout_symbol, dbxout_parms, and
+ dbxout_reg_params. Those routines may also be called from a higher
+ level intercepted routine. So to prevent recording data for an inner
+ call to one of these for an intercept, we maintain an intercept
+ nesting counter (debug_nesting). We only save the intercepted
+ arguments if the nesting is 1. */
+static int debug_nesting = 0;
+
+static tree *symbol_queue;
+static int symbol_queue_index = 0;
+static int symbol_queue_size = 0;
+
+#define DBXOUT_DECR_NESTING \
+ if (--debug_nesting == 0 && symbol_queue_index > 0) \
+ { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); }
+
+#define DBXOUT_DECR_NESTING_AND_RETURN(x) \
+ do {--debug_nesting; return (x);} while (0)
+
+#endif /* DBX_DEBUGGING_INFO || XCOFF_DEBUGGING_INFO */
+
#if defined (DBX_DEBUGGING_INFO)
static void
named sections. */
if (!use_gnu_debug_info_extensions
|| NO_DBX_FUNCTION_END
- || !targetm.have_named_sections)
+ || !targetm_common.have_named_sections)
return;
/* By convention, GCC will mark the end of a function with an N_FUN
}
\f
+/* Generate the symbols for any queued up type symbols we encountered
+ while generating the type info for some originally used symbol.
+ This might generate additional entries in the queue. Only when
+ the nesting depth goes to 0 is this routine called. */
+
+static void
+debug_flush_symbol_queue (void)
+{
+ int i;
+
+ /* Make sure that additionally queued items are not flushed
+ prematurely. */
+
+ ++debug_nesting;
+ for (i = 0; i < symbol_queue_index; ++i)
+ {
+ /* If we pushed queued symbols then such symbols must be
+ output no matter what anyone else says. Specifically,
+ we need to make sure dbxout_symbol() thinks the symbol was
+ used and also we need to override TYPE_DECL_SUPPRESS_DEBUG
+ which may be set for outside reasons. */
+ int saved_tree_used = TREE_USED (symbol_queue[i]);
+ int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]);
+ TREE_USED (symbol_queue[i]) = 1;
+ TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0;
+
+#ifdef DBX_DEBUGGING_INFO
+ dbxout_symbol (symbol_queue[i], 0);
+#endif
+
+ TREE_USED (symbol_queue[i]) = saved_tree_used;
+ TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug;
+ }
+
+ symbol_queue_index = 0;
+ --debug_nesting;
+}
+
+/* Queue a type symbol needed as part of the definition of a decl
+ symbol. These symbols are generated when debug_flush_symbol_queue()
+ is called. */
+
+static void
+debug_queue_symbol (tree decl)
+{
+ if (symbol_queue_index >= symbol_queue_size)
+ {
+ symbol_queue_size += 10;
+ symbol_queue = XRESIZEVEC (tree, symbol_queue, symbol_queue_size);
+ }
+
+ symbol_queue[symbol_queue_index++] = decl;
+}
+
+/* Free symbol queue. */
+static void
+debug_free_queue (void)
+{
+ if (symbol_queue)
+ {
+ free (symbol_queue);
+ symbol_queue = NULL;
+ symbol_queue_size = 0;
+ }
+}
+\f
/* Used in several places: evaluates to '0' for a private decl,
'1' for a protected decl, '2' for a public decl. */
#define DECL_ACCESSIBILITY_CHAR(DECL) \
{
/* If one of the nodes is an error_mark or its type is then
return early. */
- if (tem == error_mark_node || TREE_TYPE (tem) == error_mark_node)
+ if (error_operand_p (tem))
return;
/* Omit here local type decls until we know how to support them. */
disable debug info for these variables. */
if (!targetm.have_tls && DECL_THREAD_LOCAL_P (expr))
return NULL;
+ if (TREE_STATIC (expr)
+ && !TREE_ASM_WRITTEN (expr)
+ && !DECL_HAS_VALUE_EXPR_P (expr)
+ && !TREE_PUBLIC (expr)
+ && DECL_RTL_SET_P (expr)
+ && MEM_P (DECL_RTL (expr)))
+ {
+ /* If this is a var that might not be actually output,
+ return NULL, otherwise stabs might reference an undefined
+ symbol. */
+ struct varpool_node *node = varpool_get_node (expr);
+ if (!node || !node->needed)
+ return NULL;
+ }
/* FALLTHRU */
case PARM_DECL:
+ case RESULT_DECL:
if (DECL_HAS_VALUE_EXPR_P (expr))
return dbxout_expand_expr (DECL_VALUE_EXPR (expr));
/* FALLTHRU */
case CONST_DECL:
- case RESULT_DECL:
return DECL_RTL_IF_SET (expr);
case INTEGER_CST:
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