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84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/* JIT declarations for GDB, the GNU Debugger.
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Copyright (C) 2009-2020 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
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these actions. These values are used by the inferior, so the
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values of these enums 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
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symbol files describing generated code. As the inferior generates
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code, it adds these entries to the list, and when we attach to the
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inferior, we read them all. For the first element prev_entry
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should be NULL, and for the last element next_entry should be
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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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ULONGEST 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
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action, the inferior sets the action_flag to the appropriate enum
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value, updates relevant_entry to point to the relevant code entry,
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and calls the function at the well-known symbol with our
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breakpoint. We then read this descriptor from another global
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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
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the registration function. If it finds both, it registers all the
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already JITed code. If it has already found the symbols, then it
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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
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that the JIT 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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