1 /* Stack unwinding code based on dwarf2 frame info for GDB, the GNU debugger.
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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. */
45 /* This is the register and unwind state for a particular frame. */
48 struct context_reg *reg;
56 /* Return the frame address. */
57 CORE_ADDR cfi_read_fp ();
59 /* Store the frame address. */
60 void cfi_write_fp (CORE_ADDR val);
62 /* Restore the machine to the state it had before the current frame
64 void cfi_pop_frame (struct frame_info *);
66 /* Determine the address of the calling function's frame. */
67 CORE_ADDR cfi_frame_chain (struct frame_info *fi);
69 /* Sets the pc of the frame. */
70 CORE_ADDR cfi_init_frame_pc (int fromleaf, struct frame_info *fi);
72 /* Initialize unwind context informations of the frame. */
73 void cfi_init_extra_frame_info (int fromleaf, struct frame_info *fi);
75 /* Obtain return address of the frame. */
76 CORE_ADDR cfi_get_ra (struct frame_info *fi);
78 /* Find register number REGNUM relative to FRAME and put its
79 (raw) contents in *RAW_BUFFER. Set *OPTIMIZED if the variable
80 was optimized out (and thus can't be fetched). If the variable
81 was fetched from memory, set *ADDRP to where it was fetched from,
82 otherwise it was fetched from a register.
84 The argument RAW_BUFFER must point to aligned memory. */
85 void cfi_get_saved_register (char *raw_buffer,
88 struct frame_info *frame,
89 int regnum, enum lval_type *lval);
91 /* Return the register that the function uses for a frame pointer,
92 plus any necessary offset to be applied to the register before
93 any frame pointer offsets. */
94 void cfi_virtual_frame_pointer (CORE_ADDR pc, int *frame_regnum,
95 LONGEST * frame_offset);
97 struct context *context_alloc ();
98 void context_cpy (struct context *dst, struct context *src);
99 struct frame_state *frame_state_alloc ();