| /* JIT declarations for GDB, the GNU Debugger. |
| |
| Copyright (C) 2009 |
| Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef JIT_H |
| #define JIT_H |
| |
| /* When the JIT breakpoint fires, the inferior wants us to take one of these |
| actions. These values are used by the inferior, so the values of these enums |
| cannot be changed. */ |
| |
| typedef enum |
| { |
| JIT_NOACTION = 0, |
| JIT_REGISTER, |
| JIT_UNREGISTER |
| } jit_actions_t; |
| |
| /* This struct describes a single symbol file in a linked list of symbol files |
| describing generated code. As the inferior generates code, it adds these |
| entries to the list, and when we attach to the inferior, we read them all. |
| For the first element prev_entry should be NULL, and for the last element |
| next_entry should be NULL. */ |
| |
| struct jit_code_entry |
| { |
| CORE_ADDR next_entry; |
| CORE_ADDR prev_entry; |
| CORE_ADDR symfile_addr; |
| uint64_t symfile_size; |
| }; |
| |
| /* This is the global descriptor that the inferior uses to communicate |
| information to the debugger. To alert the debugger to take an action, the |
| inferior sets the action_flag to the appropriate enum value, updates |
| relevant_entry to point to the relevant code entry, and calls the function at |
| the well-known symbol with our breakpoint. We then read this descriptor from |
| another global well-known symbol. */ |
| |
| struct jit_descriptor |
| { |
| uint32_t version; |
| /* This should be jit_actions_t, but we want to be specific about the |
| bit-width. */ |
| uint32_t action_flag; |
| CORE_ADDR relevant_entry; |
| CORE_ADDR first_entry; |
| }; |
| |
| /* Looks for the descriptor and registration symbols and breakpoints the |
| registration function. If it finds both, it registers all the already JITed |
| code. If it has already found the symbols, then it doesn't try again. */ |
| |
| extern void jit_inferior_created_hook (void); |
| |
| /* Re-establish the jit breakpoint(s). */ |
| |
| extern void jit_breakpoint_re_set (void); |
| |
| /* This function is called by handle_inferior_event when it decides that the JIT |
| event breakpoint has fired. */ |
| |
| extern void jit_event_handler (struct gdbarch *gdbarch); |
| |
| #endif /* JIT_H */ |