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81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/* JIT declarations for GDB, the GNU Debugger.
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Copyright (C) 2009, 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef JIT_H
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#define JIT_H
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/* When the JIT breakpoint fires, the inferior wants us to take one of these
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actions. These values are used by the inferior, so the values of these enums
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cannot be changed. */
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typedef enum
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{
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JIT_NOACTION = 0,
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JIT_REGISTER,
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JIT_UNREGISTER
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} jit_actions_t;
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/* This struct describes a single symbol file in a linked list of symbol files
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describing generated code. As the inferior generates code, it adds these
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entries to the list, and when we attach to the inferior, we read them all.
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For the first element prev_entry should be NULL, and for the last element
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next_entry should be NULL. */
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struct jit_code_entry
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{
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CORE_ADDR next_entry;
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CORE_ADDR prev_entry;
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CORE_ADDR symfile_addr;
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uint64_t symfile_size;
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};
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/* This is the global descriptor that the inferior uses to communicate
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information to the debugger. To alert the debugger to take an action, the
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inferior sets the action_flag to the appropriate enum value, updates
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relevant_entry to point to the relevant code entry, and calls the function at
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the well-known symbol with our breakpoint. We then read this descriptor from
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another global well-known symbol. */
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struct jit_descriptor
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{
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uint32_t version;
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/* This should be jit_actions_t, but we want to be specific about the
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bit-width. */
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uint32_t action_flag;
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CORE_ADDR relevant_entry;
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CORE_ADDR first_entry;
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};
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/* Looks for the descriptor and registration symbols and breakpoints the
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registration function. If it finds both, it registers all the already JITed
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code. If it has already found the symbols, then it doesn't try again. */
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extern void jit_inferior_created_hook (void);
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/* Re-establish the jit breakpoint(s). */
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extern void jit_breakpoint_re_set (void);
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/* This function is called by handle_inferior_event when it decides that the JIT
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event breakpoint has fired. */
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extern void jit_event_handler (struct gdbarch *gdbarch);
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#endif /* JIT_H */
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