/* This file is part of the program psim.
- Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
+ Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
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,
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.
-
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+
*/
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
-#include <sys/errno.h>
+#include <errno.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#endif
-#if HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#if WITH_NetBSD_HOST /* here NetBSD as that is what we're emulating */
#include <sys/syscall.h> /* FIXME - should not be including this one */
#include <sys/sysctl.h>
+#include <sys/mount.h>
extern int getdirentries(int fd, char *buf, int nbytes, long *basep);
+
+/* NetBSD post 2.0 has the statfs system call (if COMPAT_20), but does
+ not have struct statfs. In this case don't implement fstatfs.
+ FIXME: Should implement fstatvfs. */
+#ifndef HAVE_STRUCT_STATFS
+#undef HAVE_FSTATFS
+#endif
+
#else
/* If this is not netbsd, don't allow fstatfs or getdirentries at this time */
#endif
+/* EMULATION
+
+ NetBSD - Emulation of user programs for NetBSD/PPC
+
+ DESCRIPTION
+
+ */
+
+
/* NetBSD's idea of what is needed to implement emulations */
struct _os_emul_data {
emul_write_buffer(&buf, addr, sizeof(buf), processor, cia);
}
-
+
#ifdef HAVE_FSTATFS
STATIC_INLINE_EMUL_NETBSD void
write_statfs(unsigned_word addr,
}
#endif
-
+
STATIC_INLINE_EMUL_NETBSD void
write_timeval(unsigned_word addr,
struct timeval t,
emul_write_buffer(&t, addr, sizeof(t), processor, cia);
}
-
+#ifdef HAVE_GETTIMEOFDAY
STATIC_INLINE_EMUL_NETBSD void
write_timezone(unsigned_word addr,
struct timezone tz,
H2T(tz.tz_dsttime);
emul_write_buffer(&tz, addr, sizeof(tz), processor, cia);
}
+#endif
-
#ifdef HAVE_GETDIRENTRIES
STATIC_INLINE_EMUL_NETBSD void
write_direntries(unsigned_word addr,
nbytes -= in->d_reclen;
addr += in->d_reclen;
buf += in->d_reclen;
- zfree(out);
+ free(out);
}
}
#endif
emul_write_buffer(&rusage, addr, sizeof(rusage), processor, cia);
}
#endif
-
+
+
+/* File descriptors 0, 1, and 2 should not be closed. fd_closed[]
+ tracks whether these descriptors have been closed in do_close()
+ below. */
+
+static int fd_closed[3];
+
+/* Check for some occurrences of bad file descriptors. We only check
+ whether fd 0, 1, or 2 are "closed". By "closed" we mean that these
+ descriptors aren't actually closed, but are considered to be closed
+ by this layer.
+
+ Other checks are performed by the underlying OS call. */
+
+static int
+fdbad (int fd)
+{
+ if (fd >=0 && fd <= 2 && fd_closed[fd])
+ {
+ errno = EBADF;
+ return -1;
+ }
+ return 0;
+}
+
static void
do_exit(os_emul_data *emul,
unsigned call,
int nbytes = cpu_registers(processor)->gpr[arg0+2];
int status;
SYS(read);
-
+
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, 0x%lx, %d", d, (long)buf, nbytes);
/* get a tempoary bufer */
scratch_buffer = zalloc(nbytes);
-
+
/* check if buffer exists by reading it */
emul_read_buffer(scratch_buffer, buf, nbytes, processor, cia);
-
+
/* read */
#if 0
if (d == 0) {
status = -1;
}
#endif
- status = read (d, scratch_buffer, nbytes);
-
+ status = fdbad (d);
+ if (status == 0)
+ status = read (d, scratch_buffer, nbytes);
+
emul_write_status(processor, status, errno);
if (status > 0)
emul_write_buffer(scratch_buffer, buf, status, processor, cia);
-
- zfree(scratch_buffer);
+
+ free(scratch_buffer);
}
unsigned_word cia)
{
void *scratch_buffer = NULL;
- int nr_moved;
int d = (int)cpu_registers(processor)->gpr[arg0];
unsigned_word buf = cpu_registers(processor)->gpr[arg0+1];
int nbytes = cpu_registers(processor)->gpr[arg0+2];
int status;
SYS(write);
-
+
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, 0x%lx, %d", d, (long)buf, nbytes);
/* get a tempoary bufer */
scratch_buffer = zalloc(nbytes); /* FIXME - nbytes == 0 */
-
+
/* copy in */
- nr_moved = vm_data_map_read_buffer(cpu_data_map(processor),
- scratch_buffer,
- buf,
- nbytes);
- if (nr_moved != nbytes) {
- /* FIXME - should handle better */
- error("system_call()write copy failed (nr_moved=%d != nbytes=%d)\n",
- nr_moved, nbytes);
- }
-
+ emul_read_buffer(scratch_buffer, buf, nbytes,
+ processor, cia);
+
/* write */
- status = write(d, scratch_buffer, nbytes);
+ status = fdbad (d);
+ if (status == 0)
+ status = write(d, scratch_buffer, nbytes);
+
emul_write_status(processor, status, errno);
- zfree(scratch_buffer);
+ free(scratch_buffer);
flush_stdoutput();
}
char *path = emul_read_string(path_buf, path_addr, PATH_MAX, processor, cia);
int flags = (int)cpu_registers(processor)->gpr[arg0+1];
int mode = (int)cpu_registers(processor)->gpr[arg0+2];
+ int hostflags;
+ int status;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("0x%lx [%s], 0x%x, 0x%x", (long)path_addr, path, flags, mode);
SYS(open);
- emul_write_status(processor, open(path, flags, mode), errno);
+
+ /* Do some translation on 'flags' to match it to the host's version. */
+ /* These flag values were taken from the NetBSD 1.4 header files. */
+ if ((flags & 3) == 0)
+ hostflags = O_RDONLY;
+ else if ((flags & 3) == 1)
+ hostflags = O_WRONLY;
+ else
+ hostflags = O_RDWR;
+ if (flags & 0x00000008)
+ hostflags |= O_APPEND;
+ if (flags & 0x00000200)
+ hostflags |= O_CREAT;
+ if (flags & 0x00000400)
+ hostflags |= O_TRUNC;
+ if (flags & 0x00000800)
+ hostflags |= O_EXCL;
+
+ /* Can't combine these statements, cuz open sets errno. */
+ status = open(path, hostflags, mode);
+ emul_write_status(processor, status, errno);
}
unsigned_word cia)
{
int d = (int)cpu_registers(processor)->gpr[arg0];
+ int status;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d", d);
SYS(close);
- emul_write_status(processor, close(d), errno);
+
+ status = fdbad (d);
+ if (status == 0)
+ {
+ /* Do not close stdin, stdout, or stderr. GDB may still need access to
+ these descriptors. */
+ if (d == 0 || d == 1 || d == 2)
+ {
+ fd_closed[d] = 1;
+ status = 0;
+ }
+ else
+ status = close(d);
+ }
+
+ emul_write_status(processor, status, errno);
}
unsigned_word cia)
{
/* just pass this onto the `vm' device */
- psim *system = cpu_system(processor);
unsigned_word new_break = cpu_registers(processor)->gpr[arg0];
int status;
SYS(break);
status = device_ioctl(emul->vm,
- system,
processor,
cia,
+ device_ioctl_break,
new_break); /*ioctl-data*/
emul_write_status(processor, 0, status);
}
unsigned_word cia)
{
int oldd = cpu_registers(processor)->gpr[arg0];
- int status = dup(oldd);
+ int status = (fdbad (oldd) < 0) ? -1 : dup(oldd);
int err = errno;
if (WITH_TRACE && ppc_trace[trace_os_emul])
natural_word how = cpu_registers(processor)->gpr[arg0];
unsigned_word set = cpu_registers(processor)->gpr[arg0+1];
unsigned_word oset = cpu_registers(processor)->gpr[arg0+2];
+#ifdef SYS_sigprocmask
SYS(sigprocmask);
+#endif
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%ld, 0x%ld, 0x%ld", (long)how, (long)set, (long)oset);
|| dir & IOC_OUT
|| !(dir & IOC_VOID))
error("do_ioctl() read or write of parameter not implemented\n");
- status = ioctl(d, request, NULL);
+ status = fdbad (d);
+ if (status == 0)
+ status = ioctl(d, request, NULL);
emul_write_status(processor, status, errno);
#endif
{
int oldd = cpu_registers(processor)->gpr[arg0];
int newd = cpu_registers(processor)->gpr[arg0+1];
- int status = dup2(oldd, newd);
+ int status = (fdbad (oldd) < 0) ? -1 : dup2(oldd, newd);
int err = errno;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, %d, %d", fd, cmd, arg);
SYS(fcntl);
- status = fcntl(fd, cmd, arg);
+ status = fdbad (fd);
+ if (status == 0)
+ status = fcntl(fd, cmd, arg);
emul_write_status(processor, status, errno);
}
#endif
printf_filtered ("%d, 0x%lx", fd, (long)buf_addr);
SYS(fstatfs);
- status = fstatfs(fd, (buf_addr == 0 ? NULL : &buf));
+ status = fdbad (fd);
+ if (status == 0)
+ status = fstatfs(fd, (buf_addr == 0 ? NULL : &buf));
emul_write_status(processor, status, errno);
if (status == 0) {
if (buf_addr != 0)
char *path = emul_read_string(path_buf, path_addr, PATH_MAX, processor, cia);
struct stat buf;
int status;
+#ifdef SYS_stat
SYS(stat);
+#endif
status = stat(path, &buf);
emul_write_status(processor, status, errno);
if (status == 0)
int fd = cpu_registers(processor)->gpr[arg0];
unsigned_word stat_buf_addr = cpu_registers(processor)->gpr[arg0+1];
struct stat buf;
+ int status;
+#ifdef SYS_fstat
SYS(fstat);
- emul_write_status(processor, fstat(fd, &buf), errno);
+#endif
+ /* Can't combine these statements, cuz fstat sets errno. */
+ status = fdbad (fd);
+ if (status == 0)
+ status = fstat(fd, &buf);
+ emul_write_status(processor, status, errno);
write_stat(stat_buf_addr, buf, processor, cia);
}
#endif
char *path = emul_read_string(path_buf, path_addr, PATH_MAX, processor, cia);
unsigned_word stat_buf_addr = cpu_registers(processor)->gpr[arg0+1];
struct stat buf;
+ int status;
+#ifdef SYS_lstat
SYS(lstat);
- emul_write_status(processor, stat(path, &buf), errno);
+#endif
+ /* Can't combine these statements, cuz lstat sets errno. */
+ status = lstat(path, &buf);
+ emul_write_status(processor, status, errno);
write_stat(stat_buf_addr, buf, processor, cia);
}
#endif
unsigned_word basep_addr = cpu_registers(processor)->gpr[arg0+3];
long basep;
int status;
+#ifdef SYS_getdirentries
SYS(getdirentries);
+#endif
if (buf_addr != 0 && nbytes >= 0)
buf = zalloc(nbytes);
else
if (status > 0)
write_direntries(buf_addr, buf, status, processor, cia);
if (buf != NULL)
- zfree(buf);
+ free(buf);
}
#endif
int whence = cpu_registers(processor)->gpr[arg0+4];
off_t status;
SYS(lseek);
- status = lseek(fildes, offset, whence);
+ status = fdbad (fildes);
+ if (status == 0)
+ status = lseek(fildes, offset, whence);
if (status == -1)
emul_write_status(processor, -1, errno);
else {
processor,
cia);
name += sizeof(mib);
-
+
/* see what to do with it ... */
switch ((int)mib) {
case 6/*CTL_HW*/:
static emul_syscall_descriptor netbsd_descriptors[] = {
/* 0 */ { 0, "syscall" },
/* 1 */ { do_exit, "exit" },
- /* 2 */ { 0, "fork" },
+ /* 2 */ { 0, "fork" },
/* 3 */ { do_read, "read" },
/* 4 */ { do_write, "write" },
/* 5 */ { do_open, "open" },
/* 203 */ { 0, "mlock" },
/* 204 */ { 0, "munlock" },
};
-
+
static char *(netbsd_error_names[]) = {
/* 0 */ "ESUCCESS",
/* 1 */ "EPERM",
static emul_syscall emul_netbsd_syscalls = {
netbsd_descriptors,
- sizeof(netbsd_descriptors) / sizeof(netbsd_descriptors[0]),
+ ARRAY_SIZE (netbsd_descriptors),
netbsd_error_names,
- sizeof(netbsd_error_names) / sizeof(netbsd_error_names[0]),
+ ARRAY_SIZE (netbsd_error_names),
netbsd_signal_names,
- sizeof(netbsd_signal_names) / sizeof(netbsd_signal_names[0]),
+ ARRAY_SIZE (netbsd_signal_names),
};
int elf_binary;
os_emul_data *bsd_data;
device *vm;
+ char *filename;
/* check that this emulation is really for us */
if (name != NULL && strcmp(name, "netbsd") != 0)
0 /*oea-interrupt-prefix*/);
/* virtual memory - handles growth of stack/heap */
- vm = device_tree_add_parsed(root, "/openprom/vm@0x%lx",
- (unsigned long)(top_of_stack - stack_size));
- device_tree_add_parsed(vm, "./stack-base 0x%lx",
- (unsigned long)(top_of_stack - stack_size));
- device_tree_add_parsed(vm, "./nr-bytes 0x%x", stack_size);
+ vm = tree_parse(root, "/openprom/vm");
+ tree_parse(vm, "./stack-base 0x%lx",
+ (unsigned long)(top_of_stack - stack_size));
+ tree_parse(vm, "./nr-bytes 0x%x", stack_size);
- device_tree_add_parsed(root, "/openprom/vm/map-binary/file-name %s",
- bfd_get_filename(image));
+ filename = tree_quote_property (bfd_get_filename(image));
+ tree_parse(root, "/openprom/vm/map-binary/file-name %s",
+ filename);
+ free (filename);
/* finish the init */
- device_tree_add_parsed(root, "/openprom/init/register/pc 0x%lx",
- (unsigned long)bfd_get_start_address(image));
- device_tree_add_parsed(root, "/openprom/init/register/sp 0x%lx",
- (unsigned long)top_of_stack);
- device_tree_add_parsed(root, "/openprom/init/register/msr 0x%x",
- (device_find_boolean_property(root, "/options/little-endian?")
- ? msr_little_endian_mode
- : 0));
- device_tree_add_parsed(root, "/openprom/init/stack/stack-type %s",
- (elf_binary ? "elf" : "xcoff"));
+ tree_parse(root, "/openprom/init/register/pc 0x%lx",
+ (unsigned long)bfd_get_start_address(image));
+ tree_parse(root, "/openprom/init/register/sp 0x%lx",
+ (unsigned long)top_of_stack);
+ tree_parse(root, "/openprom/init/register/msr 0x%x",
+ ((tree_find_boolean_property(root, "/options/little-endian?")
+ ? msr_little_endian_mode
+ : 0)
+ | (tree_find_boolean_property(root, "/openprom/options/floating-point?")
+ ? (msr_floating_point_available
+ | msr_floating_point_exception_mode_0
+ | msr_floating_point_exception_mode_1)
+ : 0)));
+ tree_parse(root, "/openprom/init/stack/stack-type %s",
+ (elf_binary ? "ppc-elf" : "ppc-xcoff"));
/* finally our emulation data */
bsd_data = ZALLOC(os_emul_data);
emul_netbsd_init(os_emul_data *emul_data,
int nr_cpus)
{
- /* nothing yet */
+ fd_closed[0] = 0;
+ fd_closed[1] = 0;
+ fd_closed[2] = 0;
}
static void
0 /*data*/
};
-#endif /* _EMUL_NETBSD_C_ */
+#endif /* _EMUL_NETBSD_C_ */
projects / deliverable / binutils-gdb.git / blobdiff