gdb/

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

diff --git a/gdb/dwarf2loc.h b/gdb/dwarf2loc.h
index e94346cea5fe32cd150a47212198ea8c0cc9bb97..819679191e1b53c2bfcbc0a73970a22a55181a44 100644 (file)
--- a/gdb/dwarf2loc.h
+++ b/gdb/dwarf2loc.h
@@ -1,6 +1,6 @@
 /* DWARF 2 location expression support for GDB.
 
-   Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010
+   Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
 
    This file is part of GDB.
@@ -25,10 +25,15 @@ struct symbol_computed_ops;
 struct objfile;
 struct dwarf2_per_cu_data;
 struct dwarf2_loclist_baton;
+struct agent_expr;
+struct axs_value;
 
 /* This header is private to the DWARF-2 reader.  It is shared between
    dwarf2read.c and dwarf2loc.c.  */
 
+/* `set debug entry-values' setting.  */
+extern int entry_values_debug;
+
 /* Return the OBJFILE associated with the compilation unit CU.  If CU
    came from a separate debuginfo file, then the master objfile is
    returned.  */
@@ -37,6 +42,10 @@ 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);
 
+/* Return the DW_FORM_ref_addr size given in the compilation unit header for
+   CU.  */
+int dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *cu);
+
 /* Return the offset size given in the compilation unit header for CU.  */
 int dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *cu);
 
@@ -57,6 +66,9 @@ struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block
    CORE_ADDR (*get_frame_pc) (void *baton),
    void *baton);
 
+struct type *dwarf2_get_die_type (unsigned int die_offset,
+                                 struct dwarf2_per_cu_data *per_cu);
+
 /* Evaluate a location description, starting at DATA and with length
    SIZE, to find the current location of variable of TYPE in the context
    of FRAME.  */
@@ -75,10 +87,12 @@ 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
@@ -106,4 +120,44 @@ struct dwarf2_loclist_baton
 extern const struct symbol_computed_ops dwarf2_locexpr_funcs;
 extern const struct symbol_computed_ops dwarf2_loclist_funcs;
 
+/* Compile a DWARF location expression to an agent expression.
+   
+   EXPR is the agent expression we are building.
+   LOC is the agent value we modify.
+   ARCH is the architecture.
+   ADDR_SIZE is the size of addresses, in bytes.
+   OP_PTR is the start of the location expression.
+   OP_END is one past the last byte of the location expression.
+   
+   This will throw an exception for various kinds of errors -- for
+   example, if the expression cannot be compiled, or if the expression
+   is invalid.  */
+
+extern void dwarf2_compile_expr_to_ax (struct agent_expr *expr,
+                                      struct axs_value *loc,
+                                      struct gdbarch *arch,
+                                      unsigned int addr_size,
+                                      const gdb_byte *op_ptr,
+                                      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 */