/* Remote target system call callback support.
- Copyright 1997 Free Software Foundation, Inc.
+ Copyright 1997, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* This interface isn't intended to be specific to any particular kind
of remote (hardware, simulator, whatever). As such, support for it
#ifndef va_start
#include <ansidecl.h>
-#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
#endif
+/* Needed for enum bfd_endian. */
+#include "bfd.h"
\f
/* Mapping of host/target values. */
/* ??? For debugging purposes, one might want to add a string of the
void (*flush_stderr) PARAMS ((host_callback *));
int (*stat) PARAMS ((host_callback *, const char *, struct stat *));
int (*fstat) PARAMS ((host_callback *, int, struct stat *));
+ int (*lstat) PARAMS ((host_callback *, const char *, struct stat *));
+ int (*ftruncate) PARAMS ((host_callback *, int, long));
+ int (*truncate) PARAMS ((host_callback *, const char *, long));
+ int (*pipe) PARAMS ((host_callback *, int *));
+
+ /* Called by the framework when a read call has emptied a pipe buffer. */
+ void (*pipe_empty) PARAMS ((host_callback *, int read_fd, int write_fd));
+
+ /* Called by the framework when a write call makes a pipe buffer
+ non-empty. */
+ void (*pipe_nonempty) PARAMS ((host_callback *, int read_fd, int write_fd));
/* When present, call to the client to give it the oportunity to
poll any io devices for a request to quit (indicated by a nonzero
/* Print an error message and "exit".
In the case of gdb "exiting" means doing a longjmp back to the main
command loop. */
- void (*error) PARAMS ((host_callback *, const char *, ...));
+ void (*error) PARAMS ((host_callback *, const char *, ...))
+#ifdef __GNUC__
+ __attribute__ ((__noreturn__))
+#endif
+ ;
int last_errno; /* host format */
int fdmap[MAX_CALLBACK_FDS];
- char fdopen[MAX_CALLBACK_FDS];
- char alwaysopen[MAX_CALLBACK_FDS];
+ /* fd_buddy is used to contruct circular lists of target fds that point to
+ the same host fd. A uniquely mapped fd points to itself; for a closed
+ one, fd_buddy has the value -1. The host file descriptors for stdin /
+ stdout / stderr are never closed by the simulators, so they are put
+ in a special fd_buddy circular list which also has MAX_CALLBACK_FDS
+ as a member. */
+ /* ??? We don't have a callback entry for dup, although it is trival to
+ implement now. */
+ short fd_buddy[MAX_CALLBACK_FDS+1];
+
+ /* 0 = none, >0 = reader (index of writer),
+ <0 = writer (negative index of reader).
+ If abs (ispipe[N]) == N, then N is an end of a pipe whose other
+ end is closed. */
+ short ispipe[MAX_CALLBACK_FDS];
+
+ /* A writer stores the buffer at its index. Consecutive writes
+ realloc the buffer and add to the size. The reader indicates the
+ read part in its .size, until it has consumed it all, at which
+ point it deallocates the buffer and zeroes out both sizes. */
+ struct pipe_write_buffer
+ {
+ int size;
+ char *buffer;
+ } pipe_buffer[MAX_CALLBACK_FDS];
/* System call numbers. */
CB_TARGET_DEFS_MAP *syscall_map;
Example: "st_dev,4:st_ino,4:st_mode,4:..." */
const char *stat_map;
+ enum bfd_endian target_endian;
+
+ /* Size of an "int" on the target (for syscalls whose ABI uses "int").
+ This must include padding, and only padding-at-higher-address is
+ supported. For example, a 64-bit target with 32-bit int:s which
+ are padded to 64 bits when in an array, should supposedly set this
+ to 8. The default is 4 which matches ILP32 targets and 64-bit
+ targets with 32-bit ints and no padding. */
+ int target_sizeof_int;
+
/* Marker for those wanting to do sanity checks.
This should remain the last member of this struct to help catch
miscompilation errors. */
#define CB_SYS_chmod 16
#define CB_SYS_utime 17
#define CB_SYS_time 18
+
+/* More standard syscalls. */
+#define CB_SYS_lstat 19
+#define CB_SYS_rename 20
+#define CB_SYS_truncate 21
+#define CB_SYS_ftruncate 22
+#define CB_SYS_pipe 23
\f
/* Struct use to pass and return information necessary to perform a
system call. */
Result is size of target stat struct or 0 if error. */
int cb_host_to_target_stat PARAMS ((host_callback *, const struct stat *, PTR));
+/* Translate a value to target endian. */
+void cb_store_target_endian PARAMS ((host_callback *, char *, int, long));
+
+/* Tests for special fds. */
+int cb_is_stdin PARAMS ((host_callback *, int));
+int cb_is_stdout PARAMS ((host_callback *, int));
+int cb_is_stderr PARAMS ((host_callback *, int));
+
/* Perform a system call. */
CB_RC cb_syscall PARAMS ((host_callback *, CB_SYSCALL *));
projects / deliverable / binutils-gdb.git / blobdiff