47424e7931
Document callbacks needed. (sim_*): Change result to void where there isn't one. (sim_open): Clarify argument and error response. (sim_close): Declare. (sim_load): Change bfd_handle argument to file name. Clarify result. (sim_create_inferior): Renamed from sim_set_args. (sim_set_pc): Delete. (sim_info): Delete printf_fn argument. * remote-sim.c (gdbsim_kill): Add comment describing purpose. (gdbsim_load): Try sim_load first. (gdbsim_create_inferior): Call sim_create_inferior. (gdbsim_open): Handle args == NULL. Update call to sim_open. (gdbsim_close): Call sim_close. (gdbsim_files_info): Update call to sim_info. (gdbsim_ops): Realign comments.
122 lines
4.3 KiB
C
122 lines
4.3 KiB
C
/* This file defines the interface between the simulator and gdb.
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Copyright (C) 1993, 1994 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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (REMOTE_SIM_H)
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#define REMOTE_SIM_H 1
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/* This file is used when building stand-alone simulators, so isolate this
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file from gdb. */
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/* Pick up CORE_ADDR_TYPE if defined (from gdb), otherwise use same value as
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gdb does (unsigned int - from defs.h). */
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#ifndef CORE_ADDR_TYPE
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typedef unsigned int SIM_ADDR;
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#else
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typedef CORE_ADDR_TYPE SIM_ADDR;
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#endif
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/* Callbacks.
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The simulator may use the following callbacks (gdb routines) which the
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standalone program must provide.
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void printf_filtered (char *msg, ...);
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void error /-* noreturn *-/ (char *msg, ...);
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void *xmalloc (long size);
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*/
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/* Main simulator entry points ...
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All functions that can get an error must call the gdb routine `error',
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they can only return upon success. */
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/* Initialize the simulator. This function is called when the simulator
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is selected from the command line. ARGS is passed from the command line
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and can be used to select whatever run time options the simulator provides.
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ARGS is the raw character string and must be parsed by the simulator,
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which is trivial to do with the buildargv function in libiberty.
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It is ok to do nothing. */
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void sim_open PARAMS ((char *args));
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/* Terminate usage of the simulator. This may involve freeing target memory
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and closing any open files and mmap'd areas. You cannot assume sim_kill
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has already been called.
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QUITTING is non-zero if we cannot hang on errors. */
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void sim_close PARAMS ((int quitting));
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/* Load program PROG into the simulator.
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Return non-zero if you wish the caller to handle it
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(it is done this way because most simulators can use gr_load_image,
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but defining it as a callback seems awkward). */
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int sim_load PARAMS ((char *prog, int from_tty));
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/* Prepare to run the simulated program.
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START_ADDRESS is, yes, you guessed it, the start address of the program.
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ARGV and ENV are NULL terminated lists of pointers.
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Gdb will set the start address via sim_store_register as well, but
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standalone versions of existing simulators are not set up to cleanly call
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sim_store_register, so the START_ADDRESS argument is there as a
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workaround. */
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void sim_create_inferior PARAMS ((SIM_ADDR start_address,
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char **argv, char **env));
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/* Kill the running program.
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This may involve closing any open files and deleting any mmap'd areas. */
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void sim_kill PARAMS ((void));
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/* Read LENGTH bytes of the simulated program's memory and store in BUF.
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Result is number of bytes read, or zero if error. */
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int sim_read PARAMS ((SIM_ADDR mem, unsigned char *buf, int length));
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/* Store LENGTH bytes from BUF in the simulated program's memory.
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Result is number of bytes write, or zero if error. */
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int sim_write PARAMS ((SIM_ADDR mem, unsigned char *buf, int length));
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/* Fetch register REGNO and store the raw value in BUF. */
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void sim_fetch_register PARAMS ((int regno, unsigned char *buf));
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/* Store register REGNO from BUF (in raw format). */
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void sim_store_register PARAMS ((int regno, unsigned char *buf));
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/* Print some interesting information about the simulator.
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VERBOSE is non-zero for the wordy version. */
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void sim_info PARAMS ((int verbose));
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/* Fetch why the program stopped.
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SIGRC will contain either the argument to exit() or the signal number. */
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enum sim_stop { sim_exited, sim_stopped, sim_signalled };
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void sim_stop_reason PARAMS ((enum sim_stop *reason, int *sigrc));
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/* Run (or resume) the program. */
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void sim_resume PARAMS ((int step, int siggnal));
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#endif /* !defined (REMOTE_SIM_H) */
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