| 1 |
227 |
jeremybenn |
/* JIT declarations for GDB, the GNU Debugger.
|
| 2 |
|
|
|
| 3 |
|
|
Copyright (C) 2009, 2010 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 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 |
|
|
|
| 71 |
|
|
/* Re-establish the jit breakpoint(s). */
|
| 72 |
|
|
|
| 73 |
|
|
extern void jit_breakpoint_re_set (void);
|
| 74 |
|
|
|
| 75 |
|
|
/* This function is called by handle_inferior_event when it decides that the JIT
|
| 76 |
|
|
event breakpoint has fired. */
|
| 77 |
|
|
|
| 78 |
|
|
extern void jit_event_handler (struct gdbarch *gdbarch);
|
| 79 |
|
|
|
| 80 |
|
|
#endif /* JIT_H */
|
