#include "config.h"
#endif
#include "ansidecl.h"
+#include "libiberty.h"
#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
#include <errno.h>
#include <fcntl.h>
#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
#include "callback.h"
-#include "remote-sim.h"
#include "targ-vals.h"
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+#ifndef ENOSYS
+#define ENOSYS EINVAL
+#endif
+#ifndef ENAMETOOLONG
+#define ENAMETOOLONG EINVAL
#endif
-
-/* When doing file read/writes, do this many bytes at a time. */
-#define FILE_XFR_SIZE 4096
/* Maximum length of a path name. */
#ifndef MAX_PATH_LEN
#define MAX_PATH_LEN 1024
#endif
-/* Utility of cb_syscall to fetch a path name from the target.
- The result is 0 for success or a target errno value. */
+/* When doing file read/writes, do this many bytes at a time. */
+#define FILE_XFR_SIZE 4096
+
+/* FIXME: for now */
+#define TWORD unsigned long
+#define TADDR unsigned long
+
+/* Utility of cb_syscall to fetch a path name or other string from the target.
+ The result is 0 for success or a host errno value. */
static int
-get_path (cb, sc, buf, buflen, addr)
+get_string (cb, sc, buf, buflen, addr)
host_callback *cb;
CB_SYSCALL *sc;
char *buf;
int buflen;
- long addr;
+ TADDR addr;
{
char *p, *pend;
/* No, it isn't expected that this would cause one transaction with
the remote target for each byte. The target could send the
path name along with the syscall request, and cache the file
- name somewhere. */
+ name somewhere (or otherwise tweak this as desired). */
unsigned int count = (*sc->read_mem) (cb, sc, addr, p, 1);
if (count != 1)
- return TARGET_EINVAL;
+ return EINVAL;
if (*p == 0)
break;
}
if (p == pend)
- return TARGET_ENAMETOOLONG;
+ return ENAMETOOLONG;
return 0;
}
+/* Utility of cb_syscall to fetch a path name.
+ The buffer is malloc'd and the address is stored in BUFP.
+ The result is that of get_string.
+ If an error occurs, no buffer is left malloc'd. */
+
+static int
+get_path (cb, sc, addr, bufp)
+ host_callback *cb;
+ CB_SYSCALL *sc;
+ TADDR addr;
+ char **bufp;
+{
+ char *buf = xmalloc (MAX_PATH_LEN);
+ int result;
+
+ result = get_string (cb, sc, buf, MAX_PATH_LEN, addr);
+ if (result == 0)
+ *bufp = buf;
+ else
+ free (buf);
+ return result;
+}
+
/* Perform a system call on behalf of the target. */
CB_RC
case CB_SYS_argv :
{
/* Pointer to target's buffer. */
- SIM_ADDR tbuf = sc->arg1;
+ TADDR tbuf = sc->arg1;
/* Buffer size. */
int bufsize = sc->arg2;
/* Q is the target address of where all the strings go. */
- SIM_ADDR q;
+ TADDR q;
int word_size = cb->word_size;
int i,argc,envc,len;
const char **argv = cb->init_argv;
if (written != len)
{
result = -1;
- errcode = TARGET_EINVAL;
+ errcode = EINVAL;
goto FinishSyscall;
}
tbuf = len + 1;
if ((*sc->write_mem) (cb, sc, tbuf, "", 1) != 1)
{
result = -1;
- errcode = TARGET_EINVAL;
+ errcode = EINVAL;
goto FinishSyscall;
}
tbuf++;
if (written != len)
{
result = -1;
- errcode = TARGET_EINVAL;
+ errcode = EINVAL;
goto FinishSyscall;
}
tbuf = len + 1;
if ((*sc->write_mem) (cb, sc, tbuf, "", 1) != 1)
{
result = -1;
- errcode = TARGET_EINVAL;
+ errcode = EINVAL;
goto FinishSyscall;
}
result = argc;
case CB_SYS_open :
{
- char path[MAX_PATH_LEN];
- int errcode;
+ char *path;
- errcode = get_path (cb, sc, path, MAX_PATH_LEN, sc->arg1);
+ errcode = get_path (cb, sc, sc->arg1, &path);
if (errcode != 0)
{
result = -1;
- errcode = errcode;
goto FinishSyscall;
}
result = (*cb->open) (cb, path, sc->arg2 /*, sc->arg3*/);
+ free (path);
+ if (result < 0)
+ goto ErrorFinish;
}
break;
case CB_SYS_close :
result = (*cb->close) (cb, sc->arg1);
+ if (result < 0)
+ goto ErrorFinish;
break;
case CB_SYS_read :
malloc'ing/free'ing the space. Maybe later. */
char buf[FILE_XFR_SIZE];
int fd = sc->arg1;
- SIM_ADDR addr = sc->arg2;
+ TADDR addr = sc->arg2;
size_t count = sc->arg3;
size_t bytes_read = 0;
int bytes_written;
while (count > 0)
{
- result = (int) (*cb->read) (cb, fd, buf,
- count < FILE_XFR_SIZE ? count : FILE_XFR_SIZE);
+ if (fd == 0)
+ result = (int) (*cb->read_stdin) (cb, buf,
+ (count < FILE_XFR_SIZE
+ ? count : FILE_XFR_SIZE));
+ else
+ result = (int) (*cb->read) (cb, fd, buf,
+ (count < FILE_XFR_SIZE
+ ? count : FILE_XFR_SIZE));
if (result == -1)
- goto FinishSyscall;
+ goto ErrorFinish;
bytes_written = (*sc->write_mem) (cb, sc, addr, buf, result);
if (bytes_written != result)
{
result = -1;
- errcode = TARGET_EINVAL;
+ errcode = EINVAL;
goto FinishSyscall;
}
bytes_read += result;
malloc'ing/free'ing the space. Maybe later. */
char buf[FILE_XFR_SIZE];
int fd = sc->arg1;
- SIM_ADDR addr = sc->arg2;
+ TADDR addr = sc->arg2;
size_t count = sc->arg3;
int bytes_read;
size_t bytes_written = 0;
if (bytes_read != bytes_to_read)
{
result = -1;
- errcode = TARGET_EINVAL;
+ errcode = EINVAL;
goto FinishSyscall;
}
if (fd == 1)
result = (int) (*cb->write_stdout) (cb, buf, bytes_read);
+ if (fd == 2)
+ result = (int) (*cb->write_stderr) (cb, buf, bytes_read);
else
result = (int) (*cb->write) (cb, fd, buf, bytes_read);
if (result == -1)
- goto FinishSyscall;
+ goto ErrorFinish;
bytes_written += result;
count -= result;
addr += result;
}
break;
+ case CB_SYS_lseek :
+ {
+ int fd = sc->arg1;
+ unsigned long offset = sc->arg2;
+ int whence = sc->arg3;
+
+ result = (*cb->lseek) (cb, fd, offset, whence);
+ if (result < 0)
+ goto ErrorFinish;
+ }
+ break;
+
+ case CB_SYS_unlink :
+ {
+ char *path;
+
+ errcode = get_path (cb, sc, sc->arg1, &path);
+ if (errcode != 0)
+ {
+ result = -1;
+ goto FinishSyscall;
+ }
+ result = (*cb->unlink) (cb, path);
+ free (path);
+ if (result < 0)
+ goto ErrorFinish;
+ }
+ break;
+
+ case CB_SYS_stat :
+ {
+ char *path,*buf;
+ int buflen;
+ struct stat statbuf;
+ TADDR addr = sc->arg2;
+
+ errcode = get_path (cb, sc, sc->arg1, &path);
+ if (errcode != 0)
+ {
+ result = -1;
+ goto FinishSyscall;
+ }
+ result = (*cb->stat) (cb, path, &statbuf);
+ free (path);
+ if (result < 0)
+ goto ErrorFinish;
+ buflen = cb_host_to_target_stat (cb, NULL, NULL);
+ buf = xmalloc (buflen);
+ if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
+ {
+ /* The translation failed. This is due to an internal
+ host program error, not the target's fault. */
+ free (buf);
+ errcode = ENOSYS;
+ result = -1;
+ goto FinishSyscall;
+ }
+ if ((*sc->write_mem) (cb, sc, addr, buf, buflen) != buflen)
+ {
+ free (buf);
+ errcode = EINVAL;
+ result = -1;
+ goto FinishSyscall;
+ }
+ free (buf);
+ }
+ break;
+
+ case CB_SYS_fstat :
+ {
+ char *buf;
+ int buflen;
+ struct stat statbuf;
+ TADDR addr = sc->arg2;
+
+ result = (*cb->fstat) (cb, sc->arg1, &statbuf);
+ if (result < 0)
+ goto ErrorFinish;
+ buflen = cb_host_to_target_stat (cb, NULL, NULL);
+ buf = xmalloc (buflen);
+ if (cb_host_to_target_stat (cb, &statbuf, buf) != buflen)
+ {
+ /* The translation failed. This is due to an internal
+ host program error, not the target's fault. */
+ free (buf);
+ errcode = ENOSYS;
+ result = -1;
+ goto FinishSyscall;
+ }
+ if ((*sc->write_mem) (cb, sc, addr, buf, buflen) != buflen)
+ {
+ free (buf);
+ errcode = EINVAL;
+ result = -1;
+ goto FinishSyscall;
+ }
+ free (buf);
+ }
+ break;
+
+ case CB_SYS_time :
+ {
+ /* FIXME: May wish to change CB_SYS_time to something else.
+ We might also want gettimeofday or times, but if system calls
+ can be built on others, we can keep the number we have to support
+ here down. */
+ time_t t = (*cb->time) (cb, (time_t *) 0);
+ result = t;
+ /* It is up to target code to process the argument to time(). */
+ }
+ break;
+
+ case CB_SYS_chdir :
+ case CB_SYS_chmod :
+ case CB_SYS_utime :
+ /* fall through for now */
+
default :
result = -1;
-#ifdef TARGET_ENOSYS
- errcode = TARGET_ENOSYS;
-#else
- errcode = TARGET_EINVAL;
-#endif
+ errcode = ENOSYS;
break;
}
FinishSyscall:
sc->result = result;
if (errcode == 0)
- sc->errcode = (*cb->get_errno) (cb);
+ sc->errcode = 0;
else
- sc->errcode = errcode;
+ sc->errcode = cb_host_to_target_errno (cb, errcode);
+ return CB_RC_OK;
+ ErrorFinish:
+ sc->result = result;
+ sc->errcode = (*cb->get_errno) (cb);
return CB_RC_OK;
}
projects / binutils-gdb.git / commitdiff