gdb/dwarf2cfi.h

   1 /* Stack unwinding code based on dwarf2 frame info for GDB, the GNU debugger.
   2    Copyright 2001
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef DWARF2CFI_H
  23 #define DWARF2CFI_H
  24
  25 /* Return the frame address.  */
  26 CORE_ADDR cfi_read_fp ();
  27
  28 /* Store the frame address.  */
  29 void cfi_write_fp (CORE_ADDR val);
  30
  31 /* Restore the machine to the state it had before the current frame
  32    was created.  */
  33 void cfi_pop_frame (struct frame_info *);
  34
  35 /* Determine the address of the calling function's frame.  */
  36 CORE_ADDR cfi_frame_chain (struct frame_info *fi);
  37
  38 /* Sets the pc of the frame.  */
  39 void cfi_init_frame_pc (int fromleaf, struct frame_info *fi);
  40
  41 /* Initialize unwind context informations of the frame.  */
  42 void cfi_init_extra_frame_info (int fromleaf, struct frame_info *fi);
  43
  44 /* Obtain return address of the frame.  */
  45 CORE_ADDR cfi_get_ra (struct frame_info *fi);
  46
  47 /* Find register number REGNUM relative to FRAME and put its
  48    (raw) contents in *RAW_BUFFER.  Set *OPTIMIZED if the variable
  49    was optimized out (and thus can't be fetched).  If the variable
  50    was fetched from memory, set *ADDRP to where it was fetched from,
  51    otherwise it was fetched from a register.
  52
  53    The argument RAW_BUFFER must point to aligned memory.  */
  54 void cfi_get_saved_register (char *raw_buffer,
  55                              int *optimized,
  56                              CORE_ADDR * addrp,
  57                              struct frame_info *frame,
  58                              int regnum, enum lval_type *lval);
  59
  60 /*  Return the register that the function uses for a frame pointer,
  61     plus any necessary offset to be applied to the register before
  62     any frame pointer offsets.  */
  63 void cfi_virtual_frame_pointer (CORE_ADDR pc, int *frame_regnum,
  64                                 LONGEST * frame_offset);
  65
  66 #endif