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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [gdb/] [jit.h] - Blame information for rev 824

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1 227 jeremybenn
/* 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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