projects / deliverable / binutils-gdb.git / blame
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| 4efc6507 DE |
1 | /* JIT declarations for GDB, the GNU Debugger. |
| 2 | ||
| 7b6bb8da | 3 | Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc. |
| 4efc6507 DE |
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 3 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, see <http://www.gnu.org/licenses/>. */ | |
| 19 | ||
| 20 | #ifndef JIT_H | |
| 21 | #define JIT_H | |
| 22 | ||
| 23 | /* When the JIT breakpoint fires, the inferior wants us to take one of these | |
| 24 | actions. These values are used by the inferior, so the values of these enums | |
| 25 | cannot be changed. */ | |
| 26 | ||
| 27 | typedef enum | |
| 28 | { | |
| 29 | JIT_NOACTION = 0, | |
| 30 | JIT_REGISTER, | |
| 31 | JIT_UNREGISTER | |
| 32 | } jit_actions_t; | |
| 33 | ||
| 34 | /* This struct describes a single symbol file in a linked list of symbol files | |
| 35 | describing generated code. As the inferior generates code, it adds these | |
| 36 | entries to the list, and when we attach to the inferior, we read them all. | |
| 37 | For the first element prev_entry should be NULL, and for the last element | |
| 38 | next_entry should be NULL. */ | |
| 39 | ||
| 40 | struct jit_code_entry | |
| 41 | { | |
| 42 | CORE_ADDR next_entry; | |
| 43 | CORE_ADDR prev_entry; | |
| 44 | CORE_ADDR symfile_addr; | |
| 45 | uint64_t symfile_size; | |
| 46 | }; | |
| 47 | ||
| 48 | /* This is the global descriptor that the inferior uses to communicate | |
| 49 | information to the debugger. To alert the debugger to take an action, the | |
| 50 | inferior sets the action_flag to the appropriate enum value, updates | |
| 51 | relevant_entry to point to the relevant code entry, and calls the function at | |
| 52 | the well-known symbol with our breakpoint. We then read this descriptor from | |
| 53 | another global well-known symbol. */ | |
| 54 | ||
| 55 | struct jit_descriptor | |
| 56 | { | |
| 57 | uint32_t version; | |
| 58 | /* This should be jit_actions_t, but we want to be specific about the | |
| 59 | bit-width. */ | |
| 60 | uint32_t action_flag; | |
| 61 | CORE_ADDR relevant_entry; | |
| 62 | CORE_ADDR first_entry; | |
| 63 | }; | |
| 64 | ||
| 65 | /* Looks for the descriptor and registration symbols and breakpoints the | |
| 66 | registration function. If it finds both, it registers all the already JITed | |
| 67 | code. If it has already found the symbols, then it doesn't try again. */ | |
| 68 | ||
| 69 | extern void jit_inferior_created_hook (void); | |
| 70 | ||
| 0756c555 DE |
71 | /* Re-establish the jit breakpoint(s). */ |
| 72 | ||
| 73 | extern void jit_breakpoint_re_set (void); | |
| 74 | ||
| 4efc6507 DE |
75 | /* This function is called by handle_inferior_event when it decides that the JIT |
| 76 | event breakpoint has fired. */ | |
| 77 | ||
| 0756c555 | 78 | extern void jit_event_handler (struct gdbarch *gdbarch); |
| 4efc6507 DE |
79 | |
| 80 | #endif /* JIT_H */ |