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binutils-gdb/sim/ppc/emul_netbsd.c

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/* This file is part of the program psim.
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 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _EMUL_NETBSD_C_
#define _EMUL_NETBSD_C_
/* Note: this module is called via a table. There is no benefit in
making it inline */
#include "emul_generic.h"
#include "emul_netbsd.h"
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/param.h>
#include <sys/time.h>
#ifdef HAVE_GETRUSAGE
#ifndef HAVE_SYS_RESOURCE_H
#undef HAVE_GETRUSAGE
#endif
#endif
#ifdef HAVE_GETRUSAGE
#include <sys/resource.h>
int getrusage();
#endif
#if HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#ifdef HAVE_UNISTD_H
#undef MAXPATHLEN /* sys/param.h might define this also */
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#define WITH_NetBSD_HOST (NetBSD >= 199306)
#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 */
#undef HAVE_FSTATFS
#undef HAVE_GETDIRENTRIES
#endif
#if (BSD < 199306) /* here BSD as just a bug */
extern int errno;
#endif
#ifndef STATIC_INLINE_EMUL_NETBSD
#define STATIC_INLINE_EMUL_NETBSD STATIC_INLINE
#endif
#if WITH_NetBSD_HOST
#define SYS(X) ASSERT(call == (SYS_##X))
#else
#define SYS(X)
#endif
#if WITH_NetBSD_HOST && (PATH_MAX != 1024)
#error "PATH_MAX not 1024"
#elif !defined(PATH_MAX)
#define PATH_MAX 1024
#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 {
device *vm;
emul_syscall *syscalls;
};
STATIC_INLINE_EMUL_NETBSD void
write_stat(unsigned_word addr,
struct stat buf,
cpu *processor,
unsigned_word cia)
{
H2T(buf.st_dev);
H2T(buf.st_ino);
H2T(buf.st_mode);
H2T(buf.st_nlink);
H2T(buf.st_uid);
H2T(buf.st_gid);
H2T(buf.st_size);
H2T(buf.st_atime);
/* H2T(buf.st_spare1); */
H2T(buf.st_mtime);
/* H2T(buf.st_spare2); */
H2T(buf.st_ctime);
/* H2T(buf.st_spare3); */
#ifdef AC_STRUCT_ST_RDEV
H2T(buf.st_rdev);
#endif
#ifdef AC_STRUCT_ST_BLKSIZE
H2T(buf.st_blksize);
#endif
#ifdef AC_STRUCT_ST_BLOCKS
H2T(buf.st_blocks);
#endif
#if WITH_NetBSD_HOST
H2T(buf.st_flags);
H2T(buf.st_gen);
#endif
emul_write_buffer(&buf, addr, sizeof(buf), processor, cia);
}
#ifdef HAVE_FSTATFS
STATIC_INLINE_EMUL_NETBSD void
write_statfs(unsigned_word addr,
struct statfs buf,
cpu *processor,
unsigned_word cia)
{
H2T(buf.f_type);
H2T(buf.f_flags);
H2T(buf.f_bsize);
H2T(buf.f_iosize);
H2T(buf.f_blocks);
H2T(buf.f_bfree);
H2T(buf.f_bavail);
H2T(buf.f_files);
H2T(buf.f_ffree);
H2T(buf.f_fsid.val[0]);
H2T(buf.f_fsid.val[1]);
H2T(buf.f_owner);
/* f_spare[4]; */
/* f_fstypename[MFSNAMELEN]; */
/* f_mntonname[MNAMELEN]; */
/* f_mntfromname[MNAMELEN]; */
emul_write_buffer(&buf, addr, sizeof(buf), processor, cia);
}
#endif
STATIC_INLINE_EMUL_NETBSD void
write_timeval(unsigned_word addr,
struct timeval t,
cpu *processor,
unsigned_word cia)
{
H2T(t.tv_sec);
H2T(t.tv_usec);
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,
cpu *processor,
unsigned_word cia)
{
H2T(tz.tz_minuteswest);
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,
char *buf,
int nbytes,
cpu *processor,
unsigned_word cia)
{
while (nbytes > 0) {
struct dirent *out;
struct dirent *in = (struct dirent*)buf;
ASSERT(in->d_reclen <= nbytes);
out = (struct dirent*)zalloc(in->d_reclen);
memcpy(out/*dest*/, in/*src*/, in->d_reclen);
H2T(out->d_fileno);
H2T(out->d_reclen);
H2T(out->d_type);
H2T(out->d_namlen);
emul_write_buffer(out, addr, in->d_reclen, processor, cia);
nbytes -= in->d_reclen;
addr += in->d_reclen;
buf += in->d_reclen;
free(out);
}
}
#endif
#ifdef HAVE_GETRUSAGE
STATIC_INLINE_EMUL_NETBSD void
write_rusage(unsigned_word addr,
struct rusage rusage,
cpu *processor,
unsigned_word cia)
{
H2T(rusage.ru_utime.tv_sec); /* user time used */
H2T(rusage.ru_utime.tv_usec);
H2T(rusage.ru_stime.tv_sec); /* system time used */
H2T(rusage.ru_stime.tv_usec);
H2T(rusage.ru_maxrss); /* integral max resident set size */
H2T(rusage.ru_ixrss); /* integral shared text memory size */
H2T(rusage.ru_idrss); /* integral unshared data size */
H2T(rusage.ru_isrss); /* integral unshared stack size */
H2T(rusage.ru_minflt); /* page reclaims */
H2T(rusage.ru_majflt); /* page faults */
H2T(rusage.ru_nswap); /* swaps */
H2T(rusage.ru_inblock); /* block input operations */
H2T(rusage.ru_oublock); /* block output operations */
H2T(rusage.ru_msgsnd); /* messages sent */
H2T(rusage.ru_msgrcv); /* messages received */
H2T(rusage.ru_nsignals); /* signals received */
H2T(rusage.ru_nvcsw); /* voluntary context switches */
H2T(rusage.ru_nivcsw); /* involuntary context switches */
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,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int status = (int)cpu_registers(processor)->gpr[arg0];
SYS(exit);
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d)\n", status);
cpu_halt(processor, cia, was_exited, status);
}
static void
do_read(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
void *scratch_buffer;
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(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 = fread (scratch_buffer, 1, nbytes, stdin);
if (status == 0 && ferror (stdin))
status = -1;
}
#endif
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);
free(scratch_buffer);
}
static void
do_write(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
void *scratch_buffer = NULL;
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 */
emul_read_buffer(scratch_buffer, buf, nbytes,
processor, cia);
/* write */
status = fdbad (d);
if (status == 0)
status = write(d, scratch_buffer, nbytes);
emul_write_status(processor, status, errno);
free(scratch_buffer);
flush_stdoutput();
}
static void
do_open(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
unsigned_word path_addr = cpu_registers(processor)->gpr[arg0];
char path_buf[PATH_MAX];
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);
/* 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);
}
static void
do_close(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
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);
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);
}
static void
do_break(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
/* just pass this onto the `vm' device */
unsigned_word new_break = cpu_registers(processor)->gpr[arg0];
int status;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("0x%lx", (long)cpu_registers(processor)->gpr[arg0]);
SYS(break);
status = device_ioctl(emul->vm,
processor,
cia,
device_ioctl_break,
new_break); /*ioctl-data*/
emul_write_status(processor, 0, status);
}
#ifndef HAVE_GETPID
#define do_getpid 0
#else
static void
do_getpid(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
SYS(getpid);
emul_write_status(processor, (int)getpid(), 0);
}
#endif
#ifndef HAVE_GETUID
#define do_getuid 0
#else
static void
do_getuid(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
SYS(getuid);
emul_write_status(processor, (int)getuid(), 0);
}
#endif
#ifndef HAVE_GETEUID
#define do_geteuid 0
#else
static void
do_geteuid(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
SYS(geteuid);
emul_write_status(processor, (int)geteuid(), 0);
}
#endif
#ifndef HAVE_KILL
#define do_kill 0
#else
static void
do_kill(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
pid_t pid = cpu_registers(processor)->gpr[arg0];
int sig = cpu_registers(processor)->gpr[arg0+1];
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, %d", (int)pid, sig);
SYS(kill);
printf_filtered("SYS_kill at 0x%lx - more to this than just being killed\n",
(long)cia);
cpu_halt(processor, cia, was_signalled, sig);
}
#endif
#ifndef HAVE_DUP
#define do_dup 0
#else
static void
do_dup(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int oldd = cpu_registers(processor)->gpr[arg0];
int status = (fdbad (oldd) < 0) ? -1 : dup(oldd);
int err = errno;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d", oldd);
SYS(dup);
emul_write_status(processor, status, err);
}
#endif
#ifndef HAVE_GETEGID
#define do_getegid 0
#else
static void
do_getegid(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
SYS(getegid);
emul_write_status(processor, (int)getegid(), 0);
}
#endif
#ifndef HAVE_GETGID
#define do_getgid 0
#else
static void
do_getgid(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
SYS(getgid);
emul_write_status(processor, (int)getgid(), 0);
}
#endif
#ifndef HAVE_SIGPROCMASK
#define do_sigprocmask 0
#else
static void
do_sigprocmask(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
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);
emul_write_status(processor, 0, 0);
cpu_registers(processor)->gpr[4] = set;
}
#endif
#ifndef HAVE_IOCTL
#define do_ioctl 0
#else
static void
do_ioctl(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int d = cpu_registers(processor)->gpr[arg0];
unsigned request = cpu_registers(processor)->gpr[arg0+1];
unsigned_word argp_addr = cpu_registers(processor)->gpr[arg0+2];
#if !WITH_NetBSD_HOST
cpu_registers(processor)->gpr[arg0] = 0; /* just succeed */
#else
unsigned dir = request & IOC_DIRMASK;
int status;
SYS(ioctl);
/* what we haven't done */
if (dir & IOC_IN /* write into the io device */
|| dir & IOC_OUT
|| !(dir & IOC_VOID))
error("do_ioctl() read or write of parameter not implemented\n");
status = fdbad (d);
if (status == 0)
status = ioctl(d, request, NULL);
emul_write_status(processor, status, errno);
#endif
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, 0x%x, 0x%lx", d, request, (long)argp_addr);
}
#endif
#ifndef HAVE_UMASK
#define do_umask 0
#else
static void
do_umask(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int mask = cpu_registers(processor)->gpr[arg0];
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("0%o", mask);
SYS(umask);
emul_write_status(processor, umask(mask), 0);
}
#endif
#ifndef HAVE_DUP2
#define do_dup2 0
#else
static void
do_dup2(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int oldd = cpu_registers(processor)->gpr[arg0];
int newd = cpu_registers(processor)->gpr[arg0+1];
int status = (fdbad (oldd) < 0) ? -1 : dup2(oldd, newd);
int err = errno;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, %d", oldd, newd);
SYS(dup2);
emul_write_status(processor, status, err);
}
#endif
#ifndef HAVE_FCNTL
#define do_fcntl 0
#else
static void
do_fcntl(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int fd = cpu_registers(processor)->gpr[arg0];
int cmd = cpu_registers(processor)->gpr[arg0+1];
int arg = cpu_registers(processor)->gpr[arg0+2];
int status;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, %d, %d", fd, cmd, arg);
SYS(fcntl);
status = fdbad (fd);
if (status == 0)
status = fcntl(fd, cmd, arg);
emul_write_status(processor, status, errno);
}
#endif
#ifndef HAVE_GETTIMEOFDAY
#define do_gettimeofday 0
#else
static void
do_gettimeofday(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
unsigned_word t_addr = cpu_registers(processor)->gpr[arg0];
unsigned_word tz_addr = cpu_registers(processor)->gpr[arg0+1];
struct timeval t;
struct timezone tz;
int status = gettimeofday((t_addr != 0 ? &t : NULL),
(tz_addr != 0 ? &tz : NULL));
int err = errno;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("0x%lx, 0x%lx", (long)t_addr, (long)tz_addr);
SYS(gettimeofday);
emul_write_status(processor, status, err);
if (status == 0) {
if (t_addr != 0)
write_timeval(t_addr, t, processor, cia);
if (tz_addr != 0)
write_timezone(tz_addr, tz, processor, cia);
}
}
#endif
#ifndef HAVE_GETRUSAGE
#define do_getrusage 0
#else
static void
do_getrusage(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int who = cpu_registers(processor)->gpr[arg0];
unsigned_word rusage_addr = cpu_registers(processor)->gpr[arg0+1];
struct rusage rusage;
int status = getrusage(who, (rusage_addr != 0 ? &rusage : NULL));
int err = errno;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, 0x%lx", who, (long)rusage_addr);
SYS(getrusage);
emul_write_status(processor, status, err);
if (status == 0) {
if (rusage_addr != 0)
write_rusage(rusage_addr, rusage, processor, cia);
}
}
#endif
#ifndef HAVE_FSTATFS
#define do_fstatfs 0
#else
static void
do_fstatfs(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int fd = cpu_registers(processor)->gpr[arg0];
unsigned_word buf_addr = cpu_registers(processor)->gpr[arg0+1];
struct statfs buf;
int status;
if (WITH_TRACE && ppc_trace[trace_os_emul])
printf_filtered ("%d, 0x%lx", fd, (long)buf_addr);
SYS(fstatfs);
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)
write_statfs(buf_addr, buf, processor, cia);
}
}
#endif
#ifndef HAVE_STAT
#define do_stat 0
#else
static void
do_stat(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
char path_buf[PATH_MAX];
unsigned_word path_addr = cpu_registers(processor)->gpr[arg0];
unsigned_word stat_buf_addr = cpu_registers(processor)->gpr[arg0+1];
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)
write_stat(stat_buf_addr, buf, processor, cia);
}
#endif
#ifndef HAVE_FSTAT
#define do_fstat 0
#else
static void
do_fstat(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
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);
#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
#ifndef HAVE_LSTAT
#define do_lstat 0
#else
static void
do_lstat(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
char path_buf[PATH_MAX];
unsigned_word path_addr = cpu_registers(processor)->gpr[arg0];
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);
#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
#ifndef HAVE_GETDIRENTRIES
#define do_getdirentries 0
#else
static void
do_getdirentries(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int fd = cpu_registers(processor)->gpr[arg0];
unsigned_word buf_addr = cpu_registers(processor)->gpr[arg0+1];
char *buf;
int nbytes = cpu_registers(processor)->gpr[arg0+2];
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
buf = NULL;
status = getdirentries(fd,
(buf_addr == 0 ? NULL : buf),
nbytes,
(basep_addr == 0 ? NULL : &basep));
emul_write_status(processor, status, errno);
if (basep_addr != 0)
emul_write_word(basep_addr, basep, processor, cia);
if (status > 0)
write_direntries(buf_addr, buf, status, processor, cia);
if (buf != NULL)
free(buf);
}
#endif
static void
do___syscall(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
SYS(__syscall);
emul_do_system_call(emul,
emul->syscalls,
cpu_registers(processor)->gpr[arg0],
arg0 + 1,
processor,
cia);
}
#ifndef HAVE_LSEEK
#define do_lseek 0
#else
static void
do_lseek(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
int fildes = cpu_registers(processor)->gpr[arg0];
off_t offset = emul_read_gpr64(processor, arg0+2);
int whence = cpu_registers(processor)->gpr[arg0+4];
off_t status;
SYS(lseek);
status = fdbad (fildes);
if (status == 0)
status = lseek(fildes, offset, whence);
if (status == -1)
emul_write_status(processor, -1, errno);
else {
emul_write_status(processor, 0, 0); /* success */
emul_write_gpr64(processor, 3, status);
}
}
#endif
static void
do___sysctl(os_emul_data *emul,
unsigned call,
const int arg0,
cpu *processor,
unsigned_word cia)
{
/* call the arguments by their real name */
unsigned_word name = cpu_registers(processor)->gpr[arg0];
natural_word namelen = cpu_registers(processor)->gpr[arg0+1];
unsigned_word oldp = cpu_registers(processor)->gpr[arg0+2];
unsigned_word oldlenp = cpu_registers(processor)->gpr[arg0+3];
natural_word oldlen;
natural_word mib;
natural_word int_val;
SYS(__sysctl);
/* pluck out the management information base id */
if (namelen < 1)
error("system_call()SYS___sysctl bad name[0]\n");
mib = vm_data_map_read_word(cpu_data_map(processor),
name,
processor,
cia);
name += sizeof(mib);
/* see what to do with it ... */
switch ((int)mib) {
case 6/*CTL_HW*/:
#if WITH_NetBSD_HOST && (CTL_HW != 6)
# error "CTL_HW"
#endif
if (namelen < 2)
error("system_call()SYS___sysctl - CTL_HW - bad name[1]\n");
mib = vm_data_map_read_word(cpu_data_map(processor),
name,
processor,
cia);
name += sizeof(mib);
switch ((int)mib) {
case 7/*HW_PAGESIZE*/:
#if WITH_NetBSD_HOST && (HW_PAGESIZE != 7)
# error "HW_PAGESIZE"
#endif
oldlen = vm_data_map_read_word(cpu_data_map(processor),
oldlenp,
processor,
cia);
if (sizeof(natural_word) > oldlen)
error("system_call()sysctl - CTL_HW.HW_PAGESIZE - to small\n");
int_val = 8192;
oldlen = sizeof(int_val);
emul_write_word(oldp, int_val, processor, cia);
emul_write_word(oldlenp, oldlen, processor, cia);
break;
default:
error("sysctl() CTL_HW.%d unknown\n", mib);
break;
}
break;
default:
error("sysctl() name[0]=%d unknown\n", (int)mib);
break;
}
emul_write_status(processor, 0, 0); /* always succeed */
}
static emul_syscall_descriptor netbsd_descriptors[] = {
/* 0 */ { 0, "syscall" },
/* 1 */ { do_exit, "exit" },
/* 2 */ { 0, "fork" },
/* 3 */ { do_read, "read" },
/* 4 */ { do_write, "write" },
/* 5 */ { do_open, "open" },
/* 6 */ { do_close, "close" },
/* 7 */ { 0, "wait4" },
{ 0, }, /* 8 is old creat */
/* 9 */ { 0, "link" },
/* 10 */ { 0, "unlink" },
{ 0, }, /* 11 is obsolete execv */
/* 12 */ { 0, "chdir" },
/* 13 */ { 0, "fchdir" },
/* 14 */ { 0, "mknod" },
/* 15 */ { 0, "chmod" },
/* 16 */ { 0, "chown" },
/* 17 */ { do_break, "break" },
/* 18 */ { 0, "getfsstat" },
{ 0, }, /* 19 is old lseek */
/* 20 */ { do_getpid, "getpid" },
/* 21 */ { 0, "mount" },
/* 22 */ { 0, "unmount" },
/* 23 */ { 0, "setuid" },
/* 24 */ { do_getuid, "getuid" },
/* 25 */ { do_geteuid, "geteuid" },
/* 26 */ { 0, "ptrace" },
/* 27 */ { 0, "recvmsg" },
/* 28 */ { 0, "sendmsg" },
/* 29 */ { 0, "recvfrom" },
/* 30 */ { 0, "accept" },
/* 31 */ { 0, "getpeername" },
/* 32 */ { 0, "getsockname" },
/* 33 */ { 0, "access" },
/* 34 */ { 0, "chflags" },
/* 35 */ { 0, "fchflags" },
/* 36 */ { 0, "sync" },
/* 37 */ { do_kill, "kill" },
{ 0, }, /* 38 is old stat */
/* 39 */ { 0, "getppid" },
{ 0, }, /* 40 is old lstat */
/* 41 */ { do_dup, "dup" },
/* 42 */ { 0, "pipe" },
/* 43 */ { do_getegid, "getegid" },
/* 44 */ { 0, "profil" },
/* 45 */ { 0, "ktrace" },
/* 46 */ { 0, "sigaction" },
/* 47 */ { do_getgid, "getgid" },
/* 48 */ { do_sigprocmask, "sigprocmask" },
/* 49 */ { 0, "getlogin" },
/* 50 */ { 0, "setlogin" },
/* 51 */ { 0, "acct" },
/* 52 */ { 0, "sigpending" },
/* 53 */ { 0, "sigaltstack" },
/* 54 */ { do_ioctl, "ioctl" },
/* 55 */ { 0, "reboot" },
/* 56 */ { 0, "revoke" },
/* 57 */ { 0, "symlink" },
/* 58 */ { 0, "readlink" },
/* 59 */ { 0, "execve" },
/* 60 */ { do_umask, "umask" },
/* 61 */ { 0, "chroot" },
{ 0, }, /* 62 is old fstat */
{ 0, }, /* 63 is old getkerninfo */
{ 0, }, /* 64 is old getpagesize */
/* 65 */ { 0, "msync" },
/* 66 */ { 0, "vfork" },
{ 0, }, /* 67 is obsolete vread */
{ 0, }, /* 68 is obsolete vwrite */
/* 69 */ { 0, "sbrk" },
/* 70 */ { 0, "sstk" },
{ 0, }, /* 71 is old mmap */
/* 72 */ { 0, "vadvise" },
/* 73 */ { 0, "munmap" },
/* 74 */ { 0, "mprotect" },
/* 75 */ { 0, "madvise" },
{ 0, }, /* 76 is obsolete vhangup */
{ 0, }, /* 77 is obsolete vlimit */
/* 78 */ { 0, "mincore" },
/* 79 */ { 0, "getgroups" },
/* 80 */ { 0, "setgroups" },
/* 81 */ { 0, "getpgrp" },
/* 82 */ { 0, "setpgid" },
/* 83 */ { 0, "setitimer" },
{ 0, }, /* 84 is old wait */
/* 85 */ { 0, "swapon" },
/* 86 */ { 0, "getitimer" },
{ 0, }, /* 87 is old gethostname */
{ 0, }, /* 88 is old sethostname */
{ 0, }, /* 89 is old getdtablesize */
{ do_dup2, "dup2" },
{ 0, }, /* 91 */
/* 92 */ { do_fcntl, "fcntl" },
/* 93 */ { 0, "select" },
{ 0, }, /* 94 */
/* 95 */ { 0, "fsync" },
/* 96 */ { 0, "setpriority" },
/* 97 */ { 0, "socket" },
/* 98 */ { 0, "connect" },
{ 0, }, /* 99 is old accept */
/* 100 */ { 0, "getpriority" },
{ 0, }, /* 101 is old send */
{ 0, }, /* 102 is old recv */
/* 103 */ { 0, "sigreturn" },
/* 104 */ { 0, "bind" },
/* 105 */ { 0, "setsockopt" },
/* 106 */ { 0, "listen" },
{ 0, }, /* 107 is obsolete vtimes */
{ 0, }, /* 108 is old sigvec */
{ 0, }, /* 109 is old sigblock */
{ 0, }, /* 110 is old sigsetmask */
/* 111 */ { 0, "sigsuspend" },
{ 0, }, /* 112 is old sigstack */
{ 0, }, /* 113 is old recvmsg */
{ 0, }, /* 114 is old sendmsg */
/* - is obsolete vtrace */ { 0, "vtrace 115" },
/* 116 */ { do_gettimeofday, "gettimeofday" },
/* 117 */ { do_getrusage, "getrusage" },
/* 118 */ { 0, "getsockopt" },
/* 119 */ { 0, "resuba" },
/* 120 */ { 0, "readv" },
/* 121 */ { 0, "writev" },
/* 122 */ { 0, "settimeofday" },
/* 123 */ { 0, "fchown" },
/* 124 */ { 0, "fchmod" },
{ 0, }, /* 125 is old recvfrom */
{ 0, }, /* 126 is old setreuid */
{ 0, }, /* 127 is old setregid */
/* 128 */ { 0, "rename" },
{ 0, }, /* 129 is old truncate */
{ 0, }, /* 130 is old ftruncate */
/* 131 */ { 0, "flock" },
/* 132 */ { 0, "mkfifo" },
/* 133 */ { 0, "sendto" },
/* 134 */ { 0, "shutdown" },
/* 135 */ { 0, "socketpair" },
/* 136 */ { 0, "mkdir" },
/* 137 */ { 0, "rmdir" },
/* 138 */ { 0, "utimes" },
{ 0, }, /* 139 is obsolete 4.2 sigreturn */
/* 140 */ { 0, "adjtime" },
{ 0, }, /* 141 is old getpeername */
{ 0, }, /* 142 is old gethostid */
{ 0, }, /* 143 is old sethostid */
{ 0, }, /* 144 is old getrlimit */
{ 0, }, /* 145 is old setrlimit */
{ 0, }, /* 146 is old killpg */
/* 147 */ { 0, "setsid" },
/* 148 */ { 0, "quotactl" },
{ 0, }, /* 149 is old quota */
{ 0, }, /* 150 is old getsockname */
{ 0, }, /* 151 */
{ 0, }, /* 152 */
{ 0, }, /* 153 */
{ 0, }, /* 154 */
/* 155 */ { 0, "nfssvc" },
{ 0, }, /* 156 is old getdirentries */
/* 157 */ { 0, "statfs" },
/* 158 */ { do_fstatfs, "fstatfs" },
{ 0, }, /* 159 */
{ 0, }, /* 160 */
/* 161 */ { 0, "getfh" },
{ 0, }, /* 162 is old getdomainname */
{ 0, }, /* 163 is old setdomainname */
{ 0, }, /* 164 is old uname */
/* 165 */ { 0, "sysarch" },
{ 0, }, /* 166 */
{ 0, }, /* 167 */
{ 0, }, /* 168 */
/* 169 */ { 0, "semsys" },
/* 170 */ { 0, "msgsys" },
/* 171 */ { 0, "shmsys" },
{ 0, }, /* 172 */
{ 0, }, /* 173 */
{ 0, }, /* 174 */
{ 0, }, /* 175 */
{ 0, }, /* 176 */
{ 0, }, /* 177 */
{ 0, }, /* 178 */
{ 0, }, /* 179 */
{ 0, }, /* 180 */
/* 181 */ { 0, "setgid" },
/* 182 */ { 0, "setegid" },
/* 183 */ { 0, "seteuid" },
/* 184 */ { 0, "lfs_bmapv" },
/* 185 */ { 0, "lfs_markv" },
/* 186 */ { 0, "lfs_segclean" },
/* 187 */ { 0, "lfs_segwait" },
/* 188 */ { do_stat, "stat" },
/* 189 */ { do_fstat, "fstat" },
/* 190 */ { do_lstat, "lstat" },
/* 191 */ { 0, "pathconf" },
/* 192 */ { 0, "fpathconf" },
{ 0, }, /* 193 */
/* 194 */ { 0, "getrlimit" },
/* 195 */ { 0, "setrlimit" },
/* 196 */ { do_getdirentries, "getdirentries" },
/* 197 */ { 0, "mmap" },
/* 198 */ { do___syscall, "__syscall" },
/* 199 */ { do_lseek, "lseek" },
/* 200 */ { 0, "truncate" },
/* 201 */ { 0, "ftruncate" },
/* 202 */ { do___sysctl, "__sysctl" },
/* 203 */ { 0, "mlock" },
/* 204 */ { 0, "munlock" },
};
static char *(netbsd_error_names[]) = {
/* 0 */ "ESUCCESS",
/* 1 */ "EPERM",
/* 2 */ "ENOENT",
/* 3 */ "ESRCH",
/* 4 */ "EINTR",
/* 5 */ "EIO",
/* 6 */ "ENXIO",
/* 7 */ "E2BIG",
/* 8 */ "ENOEXEC",
/* 9 */ "EBADF",
/* 10 */ "ECHILD",
/* 11 */ "EDEADLK",
/* 12 */ "ENOMEM",
/* 13 */ "EACCES",
/* 14 */ "EFAULT",
/* 15 */ "ENOTBLK",
/* 16 */ "EBUSY",
/* 17 */ "EEXIST",
/* 18 */ "EXDEV",
/* 19 */ "ENODEV",
/* 20 */ "ENOTDIR",
/* 21 */ "EISDIR",
/* 22 */ "EINVAL",
/* 23 */ "ENFILE",
/* 24 */ "EMFILE",
/* 25 */ "ENOTTY",
/* 26 */ "ETXTBSY",
/* 27 */ "EFBIG",
/* 28 */ "ENOSPC",
/* 29 */ "ESPIPE",
/* 30 */ "EROFS",
/* 31 */ "EMLINK",
/* 32 */ "EPIPE",
/* 33 */ "EDOM",
/* 34 */ "ERANGE",
/* 35 */ "EAGAIN",
/* 36 */ "EINPROGRESS",
/* 37 */ "EALREADY",
/* 38 */ "ENOTSOCK",
/* 39 */ "EDESTADDRREQ",
/* 40 */ "EMSGSIZE",
/* 41 */ "EPROTOTYPE",
/* 42 */ "ENOPROTOOPT",
/* 43 */ "EPROTONOSUPPORT",
/* 44 */ "ESOCKTNOSUPPORT",
/* 45 */ "EOPNOTSUPP",
/* 46 */ "EPFNOSUPPORT",
/* 47 */ "EAFNOSUPPORT",
/* 48 */ "EADDRINUSE",
/* 49 */ "EADDRNOTAVAIL",
/* 50 */ "ENETDOWN",
/* 51 */ "ENETUNREACH",
/* 52 */ "ENETRESET",
/* 53 */ "ECONNABORTED",
/* 54 */ "ECONNRESET",
/* 55 */ "ENOBUFS",
/* 56 */ "EISCONN",
/* 57 */ "ENOTCONN",
/* 58 */ "ESHUTDOWN",
/* 59 */ "ETOOMANYREFS",
/* 60 */ "ETIMEDOUT",
/* 61 */ "ECONNREFUSED",
/* 62 */ "ELOOP",
/* 63 */ "ENAMETOOLONG",
/* 64 */ "EHOSTDOWN",
/* 65 */ "EHOSTUNREACH",
/* 66 */ "ENOTEMPTY",
/* 67 */ "EPROCLIM",
/* 68 */ "EUSERS",
/* 69 */ "EDQUOT",
/* 70 */ "ESTALE",
/* 71 */ "EREMOTE",
/* 72 */ "EBADRPC",
/* 73 */ "ERPCMISMATCH",
/* 74 */ "EPROGUNAVAIL",
/* 75 */ "EPROGMISMATCH",
/* 76 */ "EPROCUNAVAIL",
/* 77 */ "ENOLCK",
/* 78 */ "ENOSYS",
/* 79 */ "EFTYPE",
/* 80 */ "EAUTH",
/* 81 */ "ENEEDAUTH",
/* 81 */ "ELAST",
};
static char *(netbsd_signal_names[]) = {
/* 0 */ 0,
/* 1 */ "SIGHUP",
/* 2 */ "SIGINT",
/* 3 */ "SIGQUIT",
/* 4 */ "SIGILL",
/* 5 */ "SIGTRAP",
/* 6 */ "SIGABRT",
/* 7 */ "SIGEMT",
/* 8 */ "SIGFPE",
/* 9 */ "SIGKILL",
/* 10 */ "SIGBUS",
/* 11 */ "SIGSEGV",
/* 12 */ "SIGSYS",
/* 13 */ "SIGPIPE",
/* 14 */ "SIGALRM",
/* 15 */ "SIGTERM",
/* 16 */ "SIGURG",
/* 17 */ "SIGSTOP",
/* 18 */ "SIGTSTP",
/* 19 */ "SIGCONT",
/* 20 */ "SIGCHLD",
/* 21 */ "SIGTTIN",
/* 22 */ "SIGTTOU",
/* 23 */ "SIGIO",
/* 24 */ "SIGXCPU",
/* 25 */ "SIGXFSZ",
/* 26 */ "SIGVTALRM",
/* 27 */ "SIGPROF",
/* 28 */ "SIGWINCH",
/* 29 */ "SIGINFO",
/* 30 */ "SIGUSR1",
/* 31 */ "SIGUSR2",
};
static emul_syscall emul_netbsd_syscalls = {
netbsd_descriptors,
ARRAY_SIZE (netbsd_descriptors),
netbsd_error_names,
ARRAY_SIZE (netbsd_error_names),
netbsd_signal_names,
ARRAY_SIZE (netbsd_signal_names),
};
/* NetBSD's os_emul interface, most are just passed on to the generic
syscall stuff */
static os_emul_data *
emul_netbsd_create(device *root,
bfd *image,
const char *name)
{
unsigned_word top_of_stack;
unsigned stack_size;
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)
return NULL;
if (image == NULL)
return NULL;
/* merge any emulation specific entries into the device tree */
/* establish a few defaults */
if (image->xvec->flavour == bfd_target_elf_flavour) {
elf_binary = 1;
top_of_stack = 0xe0000000;
stack_size = 0x00100000;
}
else {
elf_binary = 0;
top_of_stack = 0x20000000;
stack_size = 0x00100000;
}
/* options */
emul_add_tree_options(root, image, "netbsd",
(WITH_ENVIRONMENT == USER_ENVIRONMENT
? "user" : "virtual"),
0 /*oea-interrupt-prefix*/);
/* virtual memory - handles growth of stack/heap */
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);
filename = tree_quote_property (bfd_get_filename(image));
tree_parse(root, "/openprom/vm/map-binary/file-name %s",
filename);
free (filename);
/* finish the init */
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);
bsd_data->vm = vm;
bsd_data->syscalls = &emul_netbsd_syscalls;
return bsd_data;
}
static void
emul_netbsd_init(os_emul_data *emul_data,
int nr_cpus)
{
fd_closed[0] = 0;
fd_closed[1] = 0;
fd_closed[2] = 0;
}
static void
emul_netbsd_system_call(cpu *processor,
unsigned_word cia,
os_emul_data *emul_data)
{
emul_do_system_call(emul_data,
emul_data->syscalls,
cpu_registers(processor)->gpr[0],
3, /*r3 contains arg0*/
processor,
cia);
}
const os_emul emul_netbsd = {
"netbsd",
emul_netbsd_create,
emul_netbsd_init,
emul_netbsd_system_call,
0, /*instruction_call*/
0 /*data*/
};
#endif /* _EMUL_NETBSD_C_ */
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