projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 4efc6507 DE |
1 | /* JIT declarations for GDB, the GNU Debugger. |
| 2 | ||
| 3 | Copyright (C) 2009 | |
| 4 | Free Software Foundation, Inc. | |
| 5 | ||
| 6 | This file is part of GDB. | |
| 7 | ||
| 8 | This program is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU General Public License as published by | |
| 10 | the Free Software Foundation; either version 3 of the License, or | |
| 11 | (at your option) any later version. | |
| 12 | ||
| 13 | This program is distributed in the hope that it will be useful, | |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | GNU General Public License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU General Public License | |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 20 | ||
| 21 | #ifndef JIT_H | |
| 22 | #define JIT_H | |
| 23 | ||
| 24 | /* When the JIT breakpoint fires, the inferior wants us to take one of these | |
| 25 | actions. These values are used by the inferior, so the values of these enums | |
| 26 | cannot be changed. */ | |
| 27 | ||
| 28 | typedef enum | |
| 29 | { | |
| 30 | JIT_NOACTION = 0, | |
| 31 | JIT_REGISTER, | |
| 32 | JIT_UNREGISTER | |
| 33 | } jit_actions_t; | |
| 34 | ||
| 35 | /* This struct describes a single symbol file in a linked list of symbol files | |
| 36 | describing generated code. As the inferior generates code, it adds these | |
| 37 | entries to the list, and when we attach to the inferior, we read them all. | |
| 38 | For the first element prev_entry should be NULL, and for the last element | |
| 39 | next_entry should be NULL. */ | |
| 40 | ||
| 41 | struct jit_code_entry | |
| 42 | { | |
| 43 | CORE_ADDR next_entry; | |
| 44 | CORE_ADDR prev_entry; | |
| 45 | CORE_ADDR symfile_addr; | |
| 46 | uint64_t symfile_size; | |
| 47 | }; | |
| 48 | ||
| 49 | /* This is the global descriptor that the inferior uses to communicate | |
| 50 | information to the debugger. To alert the debugger to take an action, the | |
| 51 | inferior sets the action_flag to the appropriate enum value, updates | |
| 52 | relevant_entry to point to the relevant code entry, and calls the function at | |
| 53 | the well-known symbol with our breakpoint. We then read this descriptor from | |
| 54 | another global well-known symbol. */ | |
| 55 | ||
| 56 | struct jit_descriptor | |
| 57 | { | |
| 58 | uint32_t version; | |
| 59 | /* This should be jit_actions_t, but we want to be specific about the | |
| 60 | bit-width. */ | |
| 61 | uint32_t action_flag; | |
| 62 | CORE_ADDR relevant_entry; | |
| 63 | CORE_ADDR first_entry; | |
| 64 | }; | |
| 65 | ||
| 66 | /* Looks for the descriptor and registration symbols and breakpoints the | |
| 67 | registration function. If it finds both, it registers all the already JITed | |
| 68 | code. If it has already found the symbols, then it doesn't try again. */ | |
| 69 | ||
| 70 | extern void jit_inferior_created_hook (void); | |
| 71 | ||
| 72 | /* This function is called by handle_inferior_event when it decides that the JIT | |
| 73 | event breakpoint has fired. */ | |
| 74 | ||
| 75 | extern void jit_event_handler (void); | |
| 76 | ||
| 77 | #endif /* JIT_H */ |