| /* Stack unwinding code based on dwarf2 frame info for GDB, the GNU debugger. |
| Copyright 2001 |
| 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 DWARF2CFI_H |
| #define DWARF2CFI_H |
| |
| struct context_reg |
| { |
| union |
| { |
| unsigned int reg; |
| long offset; |
| CORE_ADDR addr; |
| } |
| loc; |
| enum |
| { |
| REG_CTX_UNSAVED, |
| REG_CTX_SAVED_OFFSET, |
| REG_CTX_SAVED_REG, |
| REG_CTX_SAVED_ADDR, |
| REG_CTX_VALUE, |
| } |
| how; |
| }; |
| |
| /* This is the register and unwind state for a particular frame. */ |
| struct context |
| { |
| struct context_reg *reg; |
| |
| CORE_ADDR cfa; |
| CORE_ADDR ra; |
| void *lsda; |
| int args_size; |
| }; |
| |
| /* Return the frame address. */ |
| CORE_ADDR cfi_read_fp (); |
| |
| /* Store the frame address. */ |
| void cfi_write_fp (CORE_ADDR val); |
| |
| /* Restore the machine to the state it had before the current frame |
| was created. */ |
| void cfi_pop_frame (struct frame_info *); |
| |
| /* Determine the address of the calling function's frame. */ |
| CORE_ADDR cfi_frame_chain (struct frame_info *fi); |
| |
| /* Sets the pc of the frame. */ |
| void cfi_init_frame_pc (int fromleaf, struct frame_info *fi); |
| |
| /* Initialize unwind context informations of the frame. */ |
| void cfi_init_extra_frame_info (int fromleaf, struct frame_info *fi); |
| |
| /* Obtain return address of the frame. */ |
| CORE_ADDR cfi_get_ra (struct frame_info *fi); |
| |
| /* Find register number REGNUM relative to FRAME and put its |
| (raw) contents in *RAW_BUFFER. Set *OPTIMIZED if the variable |
| was optimized out (and thus can't be fetched). If the variable |
| was fetched from memory, set *ADDRP to where it was fetched from, |
| otherwise it was fetched from a register. |
| |
| The argument RAW_BUFFER must point to aligned memory. */ |
| void cfi_get_saved_register (char *raw_buffer, |
| int *optimized, |
| CORE_ADDR *addrp, |
| struct frame_info *frame, |
| int regnum, enum lval_type *lval); |
| |
| /* Return the register that the function uses for a frame pointer, |
| plus any necessary offset to be applied to the register before |
| any frame pointer offsets. */ |
| void cfi_virtual_frame_pointer (CORE_ADDR pc, int *frame_regnum, |
| LONGEST * frame_offset); |
| |
| struct context *context_alloc (); |
| void context_cpy (struct context *dst, struct context *src); |
| struct frame_state *frame_state_alloc (); |
| #endif |