2011-05-23 Pedro Alves <pedro@codesourcery.com>

[deliverable/binutils-gdb.git] / gdb / dwarf2-frame.h

diff --git a/gdb/dwarf2-frame.h b/gdb/dwarf2-frame.h
index 5191c0e8d497eab835a009d5992440611dc9480d..91d7643be62138c2c376d294118b9015cfbe1d92 100644 (file)
--- a/gdb/dwarf2-frame.h
+++ b/gdb/dwarf2-frame.h
@@ -1,6 +1,7 @@
 /* Frame unwinder for frames with DWARF Call Frame Information.
 
-   Copyright 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
 
    Contributed by Mark Kettenis.
 
@@ -8,7 +9,7 @@
 
    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,
@@ -17,9 +18,7 @@
    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 <http://www.gnu.org/licenses/>.  */
 
 #ifndef DWARF2_FRAME_H
 #define DWARF2_FRAME_H 1
@@ -27,6 +26,9 @@
 struct gdbarch;
 struct objfile;
 struct frame_info;
+struct dwarf2_per_cu_data;
+struct agent_expr;
+struct axs_value;
 
 /* Register rule.  */
 
@@ -51,10 +53,17 @@ enum dwarf2_frame_reg_rule
   DWARF2_FRAME_REG_SAVED_EXP,
   DWARF2_FRAME_REG_SAME_VALUE,
 
+  /* These are defined in Dwarf3.  */
+  DWARF2_FRAME_REG_SAVED_VAL_OFFSET,
+  DWARF2_FRAME_REG_SAVED_VAL_EXP,
+
   /* These aren't defined by the DWARF2 CFI specification, but are
      used internally by GDB.  */
+  DWARF2_FRAME_REG_FN,         /* Call a registered function.  */
   DWARF2_FRAME_REG_RA,         /* Return Address.  */
-  DWARF2_FRAME_REG_CFA         /* Call Frame Address.  */
+  DWARF2_FRAME_REG_RA_OFFSET,  /* Return Address with offset.  */
+  DWARF2_FRAME_REG_CFA,                /* Call Frame Address.  */
+  DWARF2_FRAME_REG_CFA_OFFSET  /* Call Frame Address with offset.  */
 };
 
 /* Register state.  */
@@ -66,7 +75,9 @@ struct dwarf2_frame_state_reg
   union {
     LONGEST offset;
     ULONGEST reg;
-    unsigned char *exp;
+    const gdb_byte *exp;
+    struct value *(*fn) (struct frame_info *this_frame, void **this_cache,
+                        int regnum);
   } loc;
   ULONGEST exp_len;
   enum dwarf2_frame_reg_rule how;
@@ -77,7 +88,8 @@ struct dwarf2_frame_state_reg
 
 extern void dwarf2_frame_set_init_reg (struct gdbarch *gdbarch,
                                       void (*init_reg) (struct gdbarch *, int,
-                                            struct dwarf2_frame_state_reg *));
+                                            struct dwarf2_frame_state_reg *,
+                                            struct frame_info *));
 
 /* Set the architecture-specific signal trampoline recognition
    function for GDBARCH to SIGNAL_FRAME_P.  */
@@ -87,20 +99,37 @@ extern void
                                   int (*signal_frame_p) (struct gdbarch *,
                                                          struct frame_info *));
 
-/* Return the frame unwind methods for the function that contains PC,
-   or NULL if it can't be handled by DWARF CFI frame unwinder.  */
+/* Set the architecture-specific adjustment of .eh_frame and .debug_frame
+   register numbers.  */
+
+extern void
+  dwarf2_frame_set_adjust_regnum (struct gdbarch *gdbarch,
+                                 int (*adjust_regnum) (struct gdbarch *,
+                                                       int, int));
+
+/* Append the DWARF-2 frame unwinders to GDBARCH's list.  */
 
-extern const struct frame_unwind *
-  dwarf2_frame_sniffer (struct frame_info *next_frame);
+void dwarf2_append_unwinders (struct gdbarch *gdbarch);
 
 /* Return the frame base methods for the function that contains PC, or
    NULL if it can't be handled by the DWARF CFI frame unwinder.  */
 
 extern const struct frame_base *
-  dwarf2_frame_base_sniffer (struct frame_info *next_frame);
+  dwarf2_frame_base_sniffer (struct frame_info *this_frame);
+
+/* Compute the DWARF CFA for a frame.  */
+
+CORE_ADDR dwarf2_frame_cfa (struct frame_info *this_frame);
 
-/* Register the DWARF CFI for OBJFILE.  */
+/* Update the agent expression EXPR with code to compute the CFA for a
+   frame at PC.  GDBARCH is the architecture of the function at PC.
+   This function may call dwarf2_compile_expr_to_ax; DATA is passed
+   through to that function if needed.  */
 
-void dwarf2_frame_build_info (struct objfile *objfile);
+extern void dwarf2_compile_cfa_to_ax (struct agent_expr *expr,
+                                     struct axs_value *loc,
+                                     struct gdbarch *gdbarch,
+                                     CORE_ADDR pc,
+                                     struct dwarf2_per_cu_data *data);
 
 #endif /* dwarf2-frame.h */