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120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
/* Remote target system call callback support.
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Copyright 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* ??? This interface isn't intended to be specific to any particular kind
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of remote (hardware, simulator, whatever). However, at the present
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time it is only used by the simulators. At some point this should be
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an entity onto itself. For example, it's wrong that the definitions of the
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functions host_to_target_errno, target_to_host_open live in the simulator
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sources. It would also be wrong for such functions to live in gdb
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sources. Until such time perhaps it would be best to avoid adding
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prototypes of functions (and thus expanding the definition of the
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interface). */
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#ifndef CALLBACK_H
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#define CALLBACK_H
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#ifndef va_start
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#include <ansidecl.h>
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#ifdef ANSI_PROTOTYPES
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#endif
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typedef struct host_callback_struct host_callback;
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#define MAX_CALLBACK_FDS 10
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struct host_callback_struct
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{
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int (*close) PARAMS ((host_callback *,int));
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int (*get_errno) PARAMS ((host_callback *));
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int (*isatty) PARAMS ((host_callback *, int));
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int (*lseek) PARAMS ((host_callback *, int, long , int));
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int (*open) PARAMS ((host_callback *, const char*, int mode));
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int (*read) PARAMS ((host_callback *,int, char *, int));
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int (*read_stdin) PARAMS (( host_callback *, char *, int));
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int (*rename) PARAMS ((host_callback *, const char *, const char *));
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int (*system) PARAMS ((host_callback *, const char *));
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long (*time) PARAMS ((host_callback *, long *));
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int (*unlink) PARAMS ((host_callback *, const char *));
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int (*write) PARAMS ((host_callback *,int, const char *, int));
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int (*write_stdout) PARAMS ((host_callback *, const char *, int));
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void (*flush_stdout) PARAMS ((host_callback *));
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int (*write_stderr) PARAMS ((host_callback *, const char *, int));
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void (*flush_stderr) PARAMS ((host_callback *));
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/* When present, call to the client to give it the oportunity to
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poll any io devices for a request to quit (indicated by a nonzero
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return value). */
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int (*poll_quit) PARAMS ((host_callback *));
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/* Used when the target has gone away, so we can close open
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handles and free memory etc etc. */
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int (*shutdown) PARAMS ((host_callback *));
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int (*init) PARAMS ((host_callback *));
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/* depreciated, use vprintf_filtered - Talk to the user on a console. */
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void (*printf_filtered) PARAMS ((host_callback *, const char *, ...));
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/* Talk to the user on a console. */
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void (*vprintf_filtered) PARAMS ((host_callback *, const char *, va_list));
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/* Same as vprintf_filtered but to stderr. */
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void (*evprintf_filtered) PARAMS ((host_callback *, const char *, va_list));
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/* Print an error message and "exit".
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In the case of gdb "exiting" means doing a longjmp back to the main
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command loop. */
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void (*error) PARAMS ((host_callback *, const char *, ...));
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int last_errno; /* host format */
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int fdmap[MAX_CALLBACK_FDS];
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char fdopen[MAX_CALLBACK_FDS];
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char alwaysopen[MAX_CALLBACK_FDS];
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/* Marker for thse wanting to do sanity checks.
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This should remain the last memeber of this struct to help catch
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miscompilation errors. */
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#define HOST_CALLBACK_MAGIC 4705 /* teds constant */
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int magic;
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};
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extern host_callback default_callback;
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/* Mapping of host/target values. */
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/* ??? For debugging purposes, one might want to add a string of the
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name of the symbol. */
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typedef struct {
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int host_val;
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int target_val;
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} target_defs_map;
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extern target_defs_map errno_map[];
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extern target_defs_map open_map[];
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extern int host_to_target_errno PARAMS ((int));
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extern int target_to_host_open PARAMS ((int));
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#endif
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