/* Remote target callback routines.
- Copyright 1995, 1996, 1997, 2000, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright 1995-2020 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
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
+ 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,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* This file provides a standard way for targets to talk to the host OS
level. */
#ifdef HAVE_CONFIG_H
-#include "cconfig.h"
+#include "config.h"
#endif
#include "ansidecl.h"
#include <stdarg.h>
/* ??? sim_cb_printf should be cb_printf, but until the callback support is
broken out of the simulator directory, these are here to not require
sim-utils.h. */
-void sim_cb_printf PARAMS ((host_callback *, const char *, ...));
-void sim_cb_eprintf PARAMS ((host_callback *, const char *, ...));
+void sim_cb_printf (host_callback *, const char *, ...);
+void sim_cb_eprintf (host_callback *, const char *, ...);
extern CB_TARGET_DEFS_MAP cb_init_syscall_map[];
extern CB_TARGET_DEFS_MAP cb_init_errno_map[];
extern CB_TARGET_DEFS_MAP cb_init_open_map[];
-extern int system PARAMS ((const char *));
-
-static int os_init PARAMS ((host_callback *));
-static int os_shutdown PARAMS ((host_callback *));
-static int os_unlink PARAMS ((host_callback *, const char *));
-static long os_time PARAMS ((host_callback *, long *));
-static int os_system PARAMS ((host_callback *, const char *));
-static int os_rename PARAMS ((host_callback *, const char *, const char *));
-static int os_write_stdout PARAMS ((host_callback *, const char *, int));
-static void os_flush_stdout PARAMS ((host_callback *));
-static int os_write_stderr PARAMS ((host_callback *, const char *, int));
-static void os_flush_stderr PARAMS ((host_callback *));
-static int os_write PARAMS ((host_callback *, int, const char *, int));
-static int os_read_stdin PARAMS ((host_callback *, char *, int));
-static int os_read PARAMS ((host_callback *, int, char *, int));
-static int os_open PARAMS ((host_callback *, const char *, int));
-static int os_lseek PARAMS ((host_callback *, int, long, int));
-static int os_isatty PARAMS ((host_callback *, int));
-static int os_get_errno PARAMS ((host_callback *));
-static int os_close PARAMS ((host_callback *, int));
-static void os_vprintf_filtered PARAMS ((host_callback *, const char *, va_list));
-static void os_evprintf_filtered PARAMS ((host_callback *, const char *, va_list));
-static void os_error PARAMS ((host_callback *, const char *, ...));
-static int fdmap PARAMS ((host_callback *, int));
-static int fdbad PARAMS ((host_callback *, int));
-static int wrap PARAMS ((host_callback *, int));
-
/* Set the callback copy of errno from what we see now. */
-static int
-wrap (p, val)
- host_callback *p;
- int val;
+static int
+wrap (host_callback *p, int val)
{
p->last_errno = errno;
return val;
/* Make sure the FD provided is ok. If not, return non-zero
and set errno. */
-static int
-fdbad (p, fd)
- host_callback *p;
- int fd;
+static int
+fdbad (host_callback *p, int fd)
{
if (fd < 0 || fd > MAX_CALLBACK_FDS || p->fd_buddy[fd] < 0)
{
- p->last_errno = EINVAL;
+ p->last_errno = EBADF;
return -1;
}
return 0;
}
-static int
-fdmap (p, fd)
- host_callback *p;
- int fd;
+static int
+fdmap (host_callback *p, int fd)
{
return p->fdmap[fd];
}
-static int
-os_close (p, fd)
- host_callback *p;
- int fd;
+static int
+os_close (host_callback *p, int fd)
{
int result;
int i, next;
#if defined(__GO32__) || defined (_MSC_VER)
static int
-os_poll_quit (p)
- host_callback *p;
+os_poll_quit (host_callback *p)
{
#if defined(__GO32__)
int kbhit ();
{
return 1;
}
- else
+ else
{
sim_cb_eprintf (p, "CTRL-A to quit, CTRL-B to quit harder\n");
}
#endif
#if defined (_MSC_VER)
/* NB - this will not compile! */
- int k = win32pollquit();
+ int k = win32pollquit ();
if (k == 1)
return 1;
else if (k == 2)
#define os_poll_quit 0
#endif /* defined(__GO32__) || defined(_MSC_VER) */
-static int
-os_get_errno (p)
- host_callback *p;
+static int
+os_get_errno (host_callback *p)
{
return cb_host_to_target_errno (p, p->last_errno);
}
-static int
-os_isatty (p, fd)
- host_callback *p;
- int fd;
+static int
+os_isatty (host_callback *p, int fd)
{
int result;
return result;
}
-static int
-os_lseek (p, fd, off, way)
- host_callback *p;
- int fd;
- long off;
- int way;
+static int
+os_lseek (host_callback *p, int fd, long off, int way)
{
int result;
result = fdbad (p, fd);
if (result)
return result;
- result = lseek (fdmap (p, fd), off, way);
+ result = wrap (p, lseek (fdmap (p, fd), off, way));
return result;
}
-static int
-os_open (p, name, flags)
- host_callback *p;
- const char *name;
- int flags;
+static int
+os_open (host_callback *p, const char *name, int flags)
{
int i;
for (i = 0; i < MAX_CALLBACK_FDS; i++)
return -1;
}
-static int
-os_read (p, fd, buf, len)
- host_callback *p;
- int fd;
- char *buf;
- int len;
+static int
+os_read (host_callback *p, int fd, char *buf, int len)
{
int result;
return result;
}
-static int
-os_read_stdin (p, buf, len)
- host_callback *p;
- char *buf;
- int len;
+static int
+os_read_stdin (host_callback *p, char *buf, int len)
{
return wrap (p, read (0, buf, len));
}
-static int
-os_write (p, fd, buf, len)
- host_callback *p;
- int fd;
- const char *buf;
- int len;
+static int
+os_write (host_callback *p, int fd, const char *buf, int len)
{
int result;
int real_fd;
return result;
}
-static int
-os_write_stdout (p, buf, len)
- host_callback *p ATTRIBUTE_UNUSED;
- const char *buf;
- int len;
+static int
+os_write_stdout (host_callback *p ATTRIBUTE_UNUSED, const char *buf, int len)
{
return fwrite (buf, 1, len, stdout);
}
static void
-os_flush_stdout (p)
- host_callback *p ATTRIBUTE_UNUSED;
+os_flush_stdout (host_callback *p ATTRIBUTE_UNUSED)
{
fflush (stdout);
}
-static int
-os_write_stderr (p, buf, len)
- host_callback *p ATTRIBUTE_UNUSED;
- const char *buf;
- int len;
+static int
+os_write_stderr (host_callback *p ATTRIBUTE_UNUSED, const char *buf, int len)
{
return fwrite (buf, 1, len, stderr);
}
static void
-os_flush_stderr (p)
- host_callback *p ATTRIBUTE_UNUSED;
+os_flush_stderr (host_callback *p ATTRIBUTE_UNUSED)
{
fflush (stderr);
}
-static int
-os_rename (p, f1, f2)
- host_callback *p;
- const char *f1;
- const char *f2;
+static int
+os_rename (host_callback *p, const char *f1, const char *f2)
{
return wrap (p, rename (f1, f2));
}
static int
-os_system (p, s)
- host_callback *p;
- const char *s;
+os_system (host_callback *p, const char *s)
{
return wrap (p, system (s));
}
-static long
-os_time (p, t)
- host_callback *p;
- long *t;
+static long
+os_time (host_callback *p, long *t)
{
return wrap (p, time (t));
}
-static int
-os_unlink (p, f1)
- host_callback *p;
- const char *f1;
+static int
+os_unlink (host_callback *p, const char *f1)
{
return wrap (p, unlink (f1));
}
static int
-os_stat (p, file, buf)
- host_callback *p;
- const char *file;
- struct stat *buf;
+os_stat (host_callback *p, const char *file, struct stat *buf)
{
/* ??? There is an issue of when to translate to the target layout.
One could do that inside this function, or one could have the
}
static int
-os_fstat (p, fd, buf)
- host_callback *p;
- int fd;
- struct stat *buf;
+os_fstat (host_callback *p, int fd, struct stat *buf)
{
if (fdbad (p, fd))
return -1;
}
static int
-os_lstat (p, file, buf)
- host_callback *p;
- const char *file;
- struct stat *buf;
+os_lstat (host_callback *p, const char *file, struct stat *buf)
{
/* NOTE: hpn/2004-12-12: Same issue here as with os_fstat. */
#ifdef HAVE_LSTAT
#endif
}
-static int
-os_ftruncate (p, fd, len)
- host_callback *p;
- int fd;
- long len;
+static int
+os_ftruncate (host_callback *p, int fd, long len)
{
int result;
}
static int
-os_truncate (p, file, len)
- host_callback *p;
- const char *file;
- long len;
+os_truncate (host_callback *p, const char *file, long len)
{
#ifdef HAVE_TRUNCATE
return wrap (p, truncate (file, len));
}
static int
-os_pipe (p, filedes)
- host_callback *p;
- int *filedes;
+os_pipe (host_callback *p, int *filedes)
{
int i;
now empty (so the writer should leave its waiting state). */
static void
-os_pipe_empty (p, reader, writer)
- host_callback *p;
- int reader;
- int writer;
+os_pipe_empty (host_callback *p, int reader, int writer)
{
}
non-empty (so the writer should wait). */
static void
-os_pipe_nonempty (p, reader, writer)
- host_callback *p;
- int reader;
- int writer;
+os_pipe_nonempty (host_callback *p, int reader, int writer)
{
}
static int
-os_shutdown (p)
- host_callback *p;
+os_shutdown (host_callback *p)
{
int i, next, j;
for (i = 0; i < MAX_CALLBACK_FDS; i++)
}
static int
-os_init (p)
- host_callback *p;
+os_init (host_callback *p)
{
int i;
}
/* VARARGS */
+#ifdef __GNUC__
+__attribute__ ((__noreturn__))
+#endif
static void
os_error (host_callback *p ATTRIBUTE_UNUSED, const char *format, ...)
{
0, /* open_map */
0, /* signal_map */
0, /* stat_map */
-
+
/* Defaults expected to be overridden at initialization, where needed. */
BFD_ENDIAN_UNKNOWN, /* target_endian */
4, /* target_sizeof_int */
If an error occurs, the existing mapping is not changed. */
CB_RC
-cb_read_target_syscall_maps (cb, file)
- host_callback *cb;
- const char *file;
+cb_read_target_syscall_maps (host_callback *cb, const char *file)
{
CB_TARGET_DEFS_MAP *syscall_map, *errno_map, *open_map, *signal_map;
const char *stat_map;
return CB_RC_OK;
}
+/* General utility functions to search a map for a value. */
+
+static const CB_TARGET_DEFS_MAP *
+cb_target_map_entry (const CB_TARGET_DEFS_MAP map[], int target_val)
+{
+ const CB_TARGET_DEFS_MAP *m;
+
+ for (m = &map[0]; m->target_val != -1; ++m)
+ if (m->target_val == target_val)
+ return m;
+
+ return NULL;
+}
+
+static const CB_TARGET_DEFS_MAP *
+cb_host_map_entry (const CB_TARGET_DEFS_MAP map[], int host_val)
+{
+ const CB_TARGET_DEFS_MAP *m;
+
+ for (m = &map[0]; m->host_val != -1; ++m)
+ if (m->host_val == host_val)
+ return m;
+
+ return NULL;
+}
+
/* Translate the target's version of a syscall number to the host's.
This isn't actually the host's version, rather a canonical form.
??? Perhaps this should be renamed to ..._canon_syscall. */
int
-cb_target_to_host_syscall (cb, target_val)
- host_callback *cb;
- int target_val;
+cb_target_to_host_syscall (host_callback *cb, int target_val)
{
- CB_TARGET_DEFS_MAP *m;
+ const CB_TARGET_DEFS_MAP *m =
+ cb_target_map_entry (cb->syscall_map, target_val);
- for (m = &cb->syscall_map[0]; m->target_val != -1; ++m)
- if (m->target_val == target_val)
- return m->host_val;
-
- return -1;
+ return m ? m->host_val : -1;
}
/* FIXME: sort tables if large.
/* Translate the host's version of errno to the target's. */
int
-cb_host_to_target_errno (cb, host_val)
- host_callback *cb;
- int host_val;
+cb_host_to_target_errno (host_callback *cb, int host_val)
{
- CB_TARGET_DEFS_MAP *m;
-
- for (m = &cb->errno_map[0]; m->host_val; ++m)
- if (m->host_val == host_val)
- return m->target_val;
+ const CB_TARGET_DEFS_MAP *m = cb_host_map_entry (cb->errno_map, host_val);
/* ??? Which error to return in this case is up for grabs.
Note that some missing values may have standard alternatives.
For now return 0 and require caller to deal with it. */
- return 0;
+ return m ? m->target_val : 0;
}
/* Given a set of target bitmasks for the open system call,
to machine generate this function. */
int
-cb_target_to_host_open (cb, target_val)
- host_callback *cb;
- int target_val;
+cb_target_to_host_open (host_callback *cb, int target_val)
{
int host_val = 0;
CB_TARGET_DEFS_MAP *m;
}
/* Utility for e.g. cb_host_to_target_stat to store values in the target's
- stat struct. */
+ stat struct.
+
+ ??? The "val" must be as big as target word size. */
void
-cb_store_target_endian (cb, p, size, val)
- host_callback *cb;
- char *p;
- int size;
- long val; /* ??? must be as big as target word size */
+cb_store_target_endian (host_callback *cb, char *p, int size, long val)
{
if (cb->target_endian == BFD_ENDIAN_BIG)
{
or zero if an error occurred during the translation. */
int
-cb_host_to_target_stat (cb, hs, ts)
- host_callback *cb;
- const struct stat *hs;
- PTR ts;
+cb_host_to_target_stat (host_callback *cb, const struct stat *hs, PTR ts)
{
const char *m = cb->stat_map;
char *p;
p->evprintf_filtered (p, fmt, ap);
va_end (ap);
}
+
+int
+cb_is_stdin (host_callback *cb, int fd)
+{
+ return fdbad (cb, fd) ? 0 : fdmap (cb, fd) == 0;
+}
+
+int
+cb_is_stdout (host_callback *cb, int fd)
+{
+ return fdbad (cb, fd) ? 0 : fdmap (cb, fd) == 1;
+}
+
+int
+cb_is_stderr (host_callback *cb, int fd)
+{
+ return fdbad (cb, fd) ? 0 : fdmap (cb, fd) == 2;
+}
+\f
+const char *
+cb_host_str_syscall (host_callback *cb, int host_val)
+{
+ const CB_TARGET_DEFS_MAP *m = cb_host_map_entry (cb->syscall_map, host_val);
+
+ return m ? m->name : NULL;
+}
+
+const char *
+cb_host_str_errno (host_callback *cb, int host_val)
+{
+ const CB_TARGET_DEFS_MAP *m = cb_host_map_entry (cb->errno_map, host_val);
+
+ return m ? m->name : NULL;
+}
+
+const char *
+cb_host_str_signal (host_callback *cb, int host_val)
+{
+ const CB_TARGET_DEFS_MAP *m = cb_host_map_entry (cb->signal_map, host_val);
+
+ return m ? m->name : NULL;
+}
+
+const char *
+cb_target_str_syscall (host_callback *cb, int target_val)
+{
+ const CB_TARGET_DEFS_MAP *m =
+ cb_target_map_entry (cb->syscall_map, target_val);
+
+ return m ? m->name : NULL;
+}
+
+const char *
+cb_target_str_errno (host_callback *cb, int target_val)
+{
+ const CB_TARGET_DEFS_MAP *m =
+ cb_target_map_entry (cb->errno_map, target_val);
+
+ return m ? m->name : NULL;
+}
+
+const char *
+cb_target_str_signal (host_callback *cb, int target_val)
+{
+ const CB_TARGET_DEFS_MAP *m =
+ cb_target_map_entry (cb->signal_map, target_val);
+
+ return m ? m->name : NULL;
+}
projects / deliverable / binutils-gdb.git / blobdiff