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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 | ||
0756c555 DE |
72 | /* Re-establish the jit breakpoint(s). */ |
73 | ||
74 | extern void jit_breakpoint_re_set (void); | |
75 | ||
4efc6507 DE |
76 | /* This function is called by handle_inferior_event when it decides that the JIT |
77 | event breakpoint has fired. */ | |
78 | ||
0756c555 | 79 | extern void jit_event_handler (struct gdbarch *gdbarch); |
4efc6507 DE |
80 | |
81 | #endif /* JIT_H */ |