projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| b6af0555 JS |
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 | ||
| baed091b ML |
25 | struct context_reg |
| 26 | { | |
| 27 | union | |
| 28 | { | |
| 29 | unsigned int reg; | |
| 30 | long offset; | |
| 31 | CORE_ADDR addr; | |
| 32 | } | |
| 33 | loc; | |
| 34 | enum | |
| 35 | { | |
| 36 | REG_CTX_UNSAVED, | |
| 37 | REG_CTX_SAVED_OFFSET, | |
| 38 | REG_CTX_SAVED_REG, | |
| 39 | REG_CTX_SAVED_ADDR, | |
| 40 | REG_CTX_VALUE, | |
| 41 | } | |
| 42 | how; | |
| 43 | }; | |
| 44 | ||
| 45 | /* This is the register and unwind state for a particular frame. */ | |
| 46 | struct context | |
| 47 | { | |
| 48 | struct context_reg *reg; | |
| 49 | ||
| 50 | CORE_ADDR cfa; | |
| 51 | CORE_ADDR ra; | |
| 52 | void *lsda; | |
| 53 | int args_size; | |
| 54 | }; | |
| 55 | ||
| b6af0555 JS |
56 | /* Return the frame address. */ |
| 57 | CORE_ADDR cfi_read_fp (); | |
| 58 | ||
| 59 | /* Store the frame address. */ | |
| 60 | void cfi_write_fp (CORE_ADDR val); | |
| 61 | ||
| 62 | /* Restore the machine to the state it had before the current frame | |
| 63 | was created. */ | |
| 64 | void cfi_pop_frame (struct frame_info *); | |
| 65 | ||
| 66 | /* Determine the address of the calling function's frame. */ | |
| 67 | CORE_ADDR cfi_frame_chain (struct frame_info *fi); | |
| 68 | ||
| 69 | /* Sets the pc of the frame. */ | |
| 70 | void cfi_init_frame_pc (int fromleaf, struct frame_info *fi); | |
| 71 | ||
| 72 | /* Initialize unwind context informations of the frame. */ | |
| 73 | void cfi_init_extra_frame_info (int fromleaf, struct frame_info *fi); | |
| 74 | ||
| 75 | /* Obtain return address of the frame. */ | |
| 76 | CORE_ADDR cfi_get_ra (struct frame_info *fi); | |
| 77 | ||
| 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. | |
| 83 | ||
| 84 | The argument RAW_BUFFER must point to aligned memory. */ | |
| 85 | void cfi_get_saved_register (char *raw_buffer, | |
| 86 | int *optimized, | |
| b64bbf8c | 87 | CORE_ADDR *addrp, |
| b6af0555 JS |
88 | struct frame_info *frame, |
| 89 | int regnum, enum lval_type *lval); | |
| 90 | ||
| 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); | |
| 96 | ||
| baed091b ML |
97 | struct context *context_alloc (); |
| 98 | void context_cpy (struct context *dst, struct context *src); | |
| 99 | struct frame_state *frame_state_alloc (); | |
| b6af0555 | 100 | #endif |