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/* Stack unwinding code based on dwarf2 frame info for GDB, the GNU debugger.
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Copyright 2001 |
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Free Software Foundation, Inc. |
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This file is part of GDB. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place - Suite 330, |
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Boston, MA 02111-1307, USA. */ |
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#ifndef DWARF2CFI_H |
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#define DWARF2CFI_H |
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struct frame_info; |
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struct context_reg |
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{ |
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union |
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{ |
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unsigned int reg; |
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long offset; |
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CORE_ADDR addr; |
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} |
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loc; |
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enum |
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{ |
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REG_CTX_UNSAVED, |
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REG_CTX_SAVED_OFFSET, |
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REG_CTX_SAVED_REG, |
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REG_CTX_SAVED_ADDR, |
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REG_CTX_VALUE, |
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} |
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how; |
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}; |
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/* This is the register and unwind state for a particular frame. */ |
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struct context |
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{ |
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struct context_reg *reg; |
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CORE_ADDR cfa; |
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CORE_ADDR ra; |
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void *lsda; |
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int args_size; |
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}; |
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/* Return the frame address. */ |
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CORE_ADDR cfi_read_fp (); |
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/* Store the frame address. */ |
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void cfi_write_fp (CORE_ADDR val); |
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/* Restore the machine to the state it had before the current frame
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was created. */ |
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void cfi_pop_frame (struct frame_info *); |
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/* Determine the address of the calling function's frame. */ |
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CORE_ADDR cfi_frame_chain (struct frame_info *fi); |
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/* Sets the pc of the frame. */ |
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CORE_ADDR cfi_init_frame_pc (int fromleaf, struct frame_info *fi); |
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/* Initialize unwind context informations of the frame. */ |
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void cfi_init_extra_frame_info (int fromleaf, struct frame_info *fi); |
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/* Obtain return address of the frame. */ |
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CORE_ADDR cfi_get_ra (struct frame_info *fi); |
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/* Find register number REGNUM relative to FRAME and put its
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(raw) contents in *RAW_BUFFER. Set *OPTIMIZED if the variable |
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was optimized out (and thus can't be fetched). If the variable |
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was fetched from memory, set *ADDRP to where it was fetched from, |
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otherwise it was fetched from a register. |
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The argument RAW_BUFFER must point to aligned memory. */ |
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void cfi_get_saved_register (char *raw_buffer, |
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int *optimized, |
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CORE_ADDR *addrp, |
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struct frame_info *frame, |
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int regnum, enum lval_type *lval); |
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/* Return the register that the function uses for a frame pointer,
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plus any necessary offset to be applied to the register before |
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any frame pointer offsets. */ |
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void cfi_virtual_frame_pointer (CORE_ADDR pc, int *frame_regnum, |
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LONGEST * frame_offset); |
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struct context *context_alloc (); |
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void context_cpy (struct context *dst, struct context *src); |
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struct frame_state *frame_state_alloc (); |
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#endif |
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