| /* Traditional frame unwind support, for GDB the GNU Debugger. |
| |
| Copyright 2003 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| 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 |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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. */ |
| |
| #ifndef TRAD_FRAME_H |
| #define TRAD_FRAME_H |
| |
| struct frame_info; |
| |
| /* A traditional saved regs table, indexed by REGNUM, encoding where |
| the value of REGNUM for the previous frame can be found in this |
| frame. |
| |
| The table is initialized with an identity encoding (ADDR == 0, |
| REALNUM == REGNUM) indicating that the value of REGNUM in the |
| previous frame can be found in register REGNUM (== REALNUM) in this |
| frame. |
| |
| The initial encoding can then be changed: |
| |
| Modify ADDR (REALNUM >= 0, ADDR != 0) to indicate that the value of |
| register REGNUM in the previous frame can be found in memory at |
| ADDR in this frame. |
| |
| Modify REALNUM (REALNUM >= 0, ADDR == 0) to indicate that the value |
| of register REGNUM in the previous frame is found in register |
| REALNUM in this frame. |
| |
| Call trad_frame_register_value (REALNUM < 0) to indicate that the |
| value of register REGNUM in the previous frame is found in ADDR. */ |
| |
| struct trad_frame_saved_reg |
| { |
| LONGEST addr; /* A CORE_ADDR fits in a longest. */ |
| int realnum; |
| }; |
| |
| /* Convenience function, encode REGNUM's location in the trad-frame. */ |
| void trad_frame_register_value (struct trad_frame_saved_reg this_saved_regs[], |
| int regnum, LONGEST val); |
| |
| /* Return a freshly allocated (and initialized) trad_frame array. */ |
| struct trad_frame_saved_reg *trad_frame_alloc_saved_regs (struct frame_info *next_frame); |
| |
| /* Given the trad_frame info, return the location of the specified |
| register. */ |
| void trad_frame_prev_register (struct frame_info *next_frame, |
| struct trad_frame_saved_reg this_saved_regs[], |
| int regnum, int *optimizedp, |
| enum lval_type *lvalp, CORE_ADDR *addrp, |
| int *realnump, void *bufferp); |
| |
| #endif |