gdb/gdbserver/

[deliverable/binutils-gdb.git] / gdb / dwarf2loc.h

diff --git a/gdb/dwarf2loc.h b/gdb/dwarf2loc.h
index 9efe1962105049768f6ed6b16325ebc198d7dcf2..b35973371fa3803009fb0bb85f07a6bce96eb53e 100644 (file)
--- a/gdb/dwarf2loc.h
+++ b/gdb/dwarf2loc.h
@@ -1,7 +1,6 @@
 /* DWARF 2 location expression support for GDB.
 
-   Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005, 2007-2012 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -21,6 +20,8 @@
 #if !defined (DWARF2LOC_H)
 #define DWARF2LOC_H
 
+#include "dwarf2expr.h"
+
 struct symbol_computed_ops;
 struct objfile;
 struct dwarf2_per_cu_data;
@@ -40,7 +41,7 @@ extern int entry_values_debug;
 struct objfile *dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *cu);
 
 /* Return the address size given in the compilation unit header for CU.  */
-CORE_ADDR dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *cu);
+int dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *cu);
 
 /* Return the DW_FORM_ref_addr size given in the compilation unit header for
    CU.  */
@@ -62,11 +63,11 @@ const gdb_byte *dwarf2_find_location_expression
    CORE_ADDR pc);
 
 struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block
-  (unsigned int offset, struct dwarf2_per_cu_data *per_cu,
+  (cu_offset offset_in_cu, struct dwarf2_per_cu_data *per_cu,
    CORE_ADDR (*get_frame_pc) (void *baton),
    void *baton);
 
-struct type *dwarf2_get_die_type (unsigned int die_offset,
+struct type *dwarf2_get_die_type (cu_offset die_offset,
                                  struct dwarf2_per_cu_data *per_cu);
 
 /* Evaluate a location description, starting at DATA and with length
@@ -87,10 +88,12 @@ struct value *dwarf2_evaluate_loc_desc (struct type *type,
 
 struct dwarf2_locexpr_baton
 {
-  /* Pointer to the start of the location expression.  */
+  /* Pointer to the start of the location expression.  Valid only if SIZE is
+     not zero.  */
   const gdb_byte *data;
 
-  /* Length of the location expression.  */
+  /* Length of the location expression.  For optimized out expressions it is
+     zero.  */
   unsigned long size;
 
   /* The compilation unit containing the symbol whose location
@@ -139,4 +142,23 @@ extern void dwarf2_compile_expr_to_ax (struct agent_expr *expr,
                                       const gdb_byte *op_end,
                                       struct dwarf2_per_cu_data *per_cu);
 
+/* Determined tail calls for constructing virtual tail call frames.  */
+
+struct call_site_chain
+  {
+    /* Initially CALLERS == CALLEES == LENGTH.  For partially ambiguous result
+       CALLERS + CALLEES < LENGTH.  */
+    int callers, callees, length;
+
+    /* Variably sized array with LENGTH elements.  Later [0..CALLERS-1] contain
+       top (GDB "prev") sites and [LENGTH-CALLEES..LENGTH-1] contain bottom
+       (GDB "next") sites.  One is interested primarily in the PC field.  */
+    struct call_site *call_site[1];
+  };
+
+struct call_site_stuff;
+extern struct call_site_chain *call_site_find_chain (struct gdbarch *gdbarch,
+                                                    CORE_ADDR caller_pc,
+                                                    CORE_ADDR callee_pc);
+
 #endif /* dwarf2loc.h */