/*
* gcc long pointer support code for HPPA.
* Copyright 1998, DIS International, Ltd.
* This code is free software; you may redistribute it and/or modify
* it under the same terms as Perl itself. (Relicensed for Perl in
* in April 2002 by Mark Klein.)
*/
typedef struct {
int spaceid;
unsigned int offset;
} LONGPOINTER, longpointer;
/*
* gcc long pointer support code for HPPA.
* Copyright 1998, DIS International, Ltd.
* This code is free software; you may redistribute it and/or modify
* it under the same terms as Perl itself. (Relicensed for Perl in
* in April 2002 by Mark Klein.)
*/
int __perl_mpe_getspaceid(void *source)
{
int val;
/*
* Given the short pointer, determine it's space ID.
*/
/*
* The colons separate output from input parameters. In this case,
* the output of the instruction (output indicated by the "=" in the
* constraint) is to a memory location (indicated by the "m"). The
* input constraint indicates that the source to the instruction
* is a register reference (indicated by the "r").
* The general format is:
* asm("<instruction template>" : <output> : <input> : <clobbers>);
* where <output> and <input> are:
* "<constraint>" (<token>)
* <instruction template> is the PA-RISC instruction in template fmt.
* <clobbers> indicates those registers clobbered by the instruction
* and provides hints to the optimizer.
*
* Refer to the gcc documentation
*/
__asm__ __volatile__ (
" comiclr,= 0,%1,%%r28\n"
"\t ldsid (%%r0,%1),%%r28\n"
"\t stw %%r28, %0"
: "=m" (val) // Output to val
: "r" (source) // Source must be gen reg
: "%r28"); // Clobbers %r28
return (val);
};
LONGPOINTER __perl_mpe_longaddr(void *source)
{
LONGPOINTER lptr;
/*
* Return the long pointer for the address in sr5 space.
*/
__asm__ __volatile__ (
" comiclr,= 0,%2,%%r28\n"
"\t ldsid (%%r0,%2),%%r28\n"
"\t stw %%r28, %0\n"
"\t stw %2, %1"
: "=m" (lptr.spaceid),
"=m" (lptr.offset) // Store to lptr
: "r" (source) // Source must be gen reg
: "%r28"); // Clobbers %r28
return (lptr);
};
LONGPOINTER __perl_mpe_addtopointer(LONGPOINTER source, // %r26 == source offset
// %r25 == source space
int len) // %r24 == length in bytes
{
/*
* Increment a longpointer.
*/
__asm__ __volatile__ (
" copy %0,%%r28\n" // copy space to r28
"\t add %1,%2,%%r29" // Increment the pointer
: // No output
: "r" (source.spaceid), // Source address
"r" (source.offset),
"r" (len) // Length
: "%r28", // Clobbers
"%r29");
};
void __perl_mpe_longmove(int len, // %r26 == byte length
LONGPOINTER source, // %r23 == source space, %r24 == off
LONGPOINTER target) // sp-#56 == target space, sp-#52== off
{
/*
* Move data between two buffers in long pointer space.
*/
__asm__ __volatile__ (
" .import $$lr_unk_unk_long,MILLICODE\n"
"\t mtsp %0,%%sr1\n" // copy source space to sr1
"\t copy %1,%%r26\n" // load source offset to r26
"\t copy %4,%%r24\n" // load length to r24
"\t copy %3,%%r25\n" // load target offset to r25
"\t bl $$lr_unk_unk_long,%%r31\n" // start branch to millicode
"\t mtsp %2,%%sr2" // copy target space to sr2
: // No output
: "r" (source.spaceid), // Source address
"r" (source.offset),
"r" (target.spaceid), // Target address
"r" (target.offset),
"r" (len) // Byte length
: "%r1", // Clobbers
"%r24",
"%r25",
"%r26",
"%r31");
};
int __perl_mpe_longpeek(LONGPOINTER source)
{
/*
* Fetch the int in long pointer space.
*/
unsigned int val;
__asm__ __volatile__ (
" mtsp %1, %%sr1\n"
"\t copy %2, %%r28\n"
"\t ldw 0(%%sr1, %%r28), %%r28\n"
"\t stw %%r28, %0"
: "=m" (val) // Output val
: "r" (source.spaceid), // Source space ID
"r" (source.offset) // Source offset
: "%r28"); // Clobbers %r28
return (val);
};
void __perl_mpe_longpoke(LONGPOINTER target, // %r25 == spaceid, %r26 == offset
unsigned int val) // %r24 == value
{
/*
* Store the val into long pointer space.
*/
__asm__ __volatile__ (
" mtsp %0,%%sr1\n"
"\t copy %1, %%r28\n"
"\t stw %2, 0(%%sr1, %%r28)"
: // No output
: "r" (target.spaceid), // Target space ID
"r" (target.offset), // Target offset
"r" (val) // Value to store
: "%r28" // Clobbers %r28
); // Copy space to %sr1
};
void __perl_mpe_move_fast(int len, // %r26 == byte length
void *source, // %r25 == source addr
void *target) // %r24 == target addr
{
/*
* Move using short pointers.
*/
__asm__ __volatile__ (
" .import $$lr_unk_unk,MILLICODE\n"
"\t copy %1, %%r26\n" // Move source addr into pos
"\t copy %2, %%r25\n" // Move target addr into pos
"\t bl $$lr_unk_unk,%%r31\n" // Start branch to millicode
"\t copy %0, %%r24" // Move length into position
: // No output
: "r" (len), // Byte length
"r" (source), // Source address
"r" (target) // Target address
: "%r24", // Clobbers
"%r25",
"%r26",
"%r31");
};
/*
* ftruncate - set file size, BSD Style
*
* shortens or enlarges the file as neeeded
* uses some undocumented locking call. It is known to work on SCO unix,
* other vendors should try.
* The #error directive prevents unsupported OSes
*
* ftruncate/truncate code by Mark Bixby.
* This code is free software; you may redistribute it and/or modify
* it under the same terms as Perl itself.
*
*/
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE
#endif
#ifndef _SOCKET_SOURCE
# define _SOCKET_SOURCE
#endif
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <limits.h>
#include <mpe.h>
extern void FCONTROL(short, short, longpointer);
extern void PRINTFILEINFO(int);
int ftruncate(int fd, long wantsize);
int
ftruncate(int fd, long wantsize)
{
int ccode_return,dummy=0;
if (lseek(fd, wantsize, SEEK_SET) < 0)
{
return (-1);
}
FCONTROL(_mpe_fileno(fd),6,__perl_mpe_longaddr(&dummy)); /* Write new EOF */
if ((ccode_return=ccode()) != CCE)
{
fprintf(stderr,
"MPE ftruncate failed, ccode=%d, wantsize=%ld\n",
ccode_return, wantsize);
PRINTFILEINFO(_mpe_fileno(fd));
errno = ESYSERR;
return (-1);
}
return (0);
}
/*
wrapper for truncate():
truncate() is UNIX, not POSIX.
This function requires ftruncate().
NAME
truncate -
SYNOPSIS
#include <unistd.h>
int truncate(const char *pathname, off_t length);
Returns: 0 if OK, -1 on error
from: Stevens' Advanced Programming in the UNIX Environment, p. 92
ERRORS
EACCES
EBADF
EDQUOT (not POSIX) <- not implemented here
EFAULT
EINVAL
EISDIR
ELOOP (not POSIX) <- not implemented here
ENAMETOOLONG
ENOTDIR
EROFS
ETXTBSY (not POSIX) <- not implemented here
from: HP-UX man page
Compile directives:
PRINT_ERROR - make this function print an error message to stderr
*/
#include <sys/types.h> /* off_t, required by open() */
#include <sys/stat.h> /* required by open() */
#include <fcntl.h> /* open() */
#include <unistd.h> /* close() */
#include <stdio.h> /* perror(), sprintf() */
int
truncate(const char *pathname, off_t length)
{
int fd;
#ifdef PRINT_ERROR
char error_msg[80+1];
#endif
if (length == 0)
{
if ( (fd = open(pathname, O_WRONLY | O_TRUNC)) < 0)
{
/* errno already set */
#ifdef PRINT_ERROR
sprintf(error_msg,
"truncate(): open(%s, O_WRONLY | OTRUNC)\0",
pathname);
perror(error_msg);
#endif
return -1;
}
}
else
{
if ( (fd = open(pathname, O_WRONLY)) < 0)
{
/* errno already set */
#ifdef PRINT_ERROR
sprintf(error_msg,
"truncate(): open(%s, O_WRONLY)\0",
pathname);
perror(error_msg);
#endif
return -1;
}
if (ftruncate(fd, length) < 0)
{
/* errno already set */
#ifdef PRINT_ERROR
perror("truncate(): ftruncate()");
#endif
return -1;
}
}
if (close(fd) < 0)
{
/* errno already set */
#ifdef PRINT_ERROR
perror("truncate(): close()");
#endif
return -1;
}
return 0;
} /* truncate() */
/*
wrapper for gettimeofday():
gettimeofday() is UNIX, not POSIX.
gettimeofday() is a BSD function.
NAME
gettimeofday -
SYNOPSIS
#include <sys/time.h>
int gettimeofday(struct timeval *tp, struct timezone *tzp);
DESCRIPTION
This function returns seconds and microseconds since midnight
January 1, 1970. The microseconds is actually only accurate to
the millisecond.
Note: To pick up the definitions of structs timeval and timezone
from the <time.h> include file, the directive
_SOCKET_SOURCE must be used.
RETURN VALUE
A 0 return value indicates that the call succeeded. A -1 return
value indicates an error occurred; errno is set to indicate the
error.
ERRORS
EFAULT not implemented
Changes:
2-91 DR. Created.
*/
/* need _SOCKET_SOURCE to pick up structs timeval and timezone in time.h */
#ifndef _SOCKET_SOURCE
# define _SOCKET_SOURCE
#endif
#include <time.h> /* structs timeval & timezone,
difftime(), localtime(), mktime(), time() */
extern int TIMER();
/*
* gettimeofday code by Mark Bixby.
* This code is free software; you may redistribute it and/or modify
* it under the same terms as Perl itself.
*/
#ifdef __STDC__
int gettimeofday( struct timeval *tp, struct timezone *tpz )
#else
int gettimeofday( tp, tpz )
struct timeval *tp;
struct timezone *tpz;
#endif
{
static unsigned long basetime = 0;
static int dsttime = 0;
static int minuteswest = 0;
static int oldtime = 0;
register int newtime;
/*-------------------------------------------------------------------*/
/* Setup a base from which all future time will be computed. */
/*-------------------------------------------------------------------*/
if ( basetime == 0 )
{
time_t gmt_time;
time_t loc_time;
struct tm *loc_time_tm;
gmt_time = time( NULL );
loc_time_tm = localtime( &gmt_time ) ;
loc_time = mktime( loc_time_tm );
oldtime = TIMER();
basetime = (unsigned long) ( loc_time - (oldtime/1000) );
/*----------------------------------------------------------------*/
/* The calling process must be restarted if timezone or dst */
/* changes. */
/*----------------------------------------------------------------*/
minuteswest = (int) (difftime( loc_time, gmt_time ) / 60);
dsttime = loc_time_tm->tm_isdst;
}
/*-------------------------------------------------------------------*/
/* Get the new time value. The timer value rolls over every 24 days, */
/* so if the delta is negative, the basetime value is adjusted. */
/*-------------------------------------------------------------------*/
newtime = TIMER();
if ( newtime < oldtime ) basetime += 2073600;
oldtime = newtime;
/*-------------------------------------------------------------------*/
/* Return the timestamp info. */
/*-------------------------------------------------------------------*/
tp->tv_sec = basetime + newtime/1000;
tp->tv_usec = (newtime%1000) * 1000; /* only accurate to milli */
if (tpz)
{
tpz->tz_minuteswest = minuteswest;
tpz->tz_dsttime = dsttime;
}
return 0;
} /* gettimeofday() */
/*
** MPE_FCNTL -- shadow function for fcntl()
**
** MPE requires sfcntl() for sockets, and fcntl() for everything
** else. This shadow routine determines the descriptor type and
** makes the appropriate call.
**
** Parameters:
** same as fcntl().
**
** Returns:
** same as fcntl().
*/
#include <stdarg.h>
#include <sys/socket.h>
int
mpe_fcntl(int fildes, int cmd, ...)
{
int len, result;
struct sockaddr sa;
void *arg;
va_list ap;
va_start(ap, cmd);
arg = va_arg(ap, void *);
va_end(ap);
len = sizeof sa;
if (getsockname(fildes, &sa, &len) == -1)
{
if (errno == EAFNOSUPPORT)
/* AF_UNIX socket */
return sfcntl(fildes, cmd, arg);
if (errno == ENOTSOCK)
/* file or pipe */
return fcntl(fildes, cmd, arg);
/* unknown getsockname() failure */
return (-1);
}
else
{
/* AF_INET socket */
if ((result = sfcntl(fildes, cmd, arg)) != -1 && cmd == F_GETFL)
result |= O_RDWR; /* fill in some missing flags */
return result;
}
}
/*
* Stuff from here on down is written by Ken Hirsch
* and you may use it for any purpose.
* No warranty, express or implied.
*/
#include <stddef.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#ifndef _SOCKLEN_T
typedef unsigned int socklen_t;
#define _SOCKLEN_T
#endif
static int max_io_size(int filedes);
ssize_t
mpe_read(int filedes, void *buffer, size_t len)
{
int maxio;
if (len > 4096 && (len > (maxio = max_io_size(filedes))))
len = maxio;
return read(filedes, buffer, len);
}
ssize_t
mpe_write(int filedes, const void *buffer, size_t len)
{
int written = 0;
int orig_len = len;
int maxio = (len>4096)?max_io_size(filedes):INT_MAX;
const char *buf = (const char *)buffer;
do {
written = write(filedes, buf, len>maxio?maxio:len);
if (written < 0)
break;
len -= written;
buf += written;
} while (len > 0);
if (written < 0 && len == orig_len)
return -1;
else
return orig_len - len;
}
ssize_t
mpe_send(int socket, const void *buffer, size_t len, int flags)
{
int written = 0;
int orig_len = len;
int maxio = (len>4096)?max_io_size(socket):INT_MAX;
const char *buf = (const char *)buffer;
do {
written = send(socket, buf, len>maxio?maxio:len, flags);
if (written < 0)
break;
len -= written;
buf += written;
} while (len > 0);
if (written < 0 && len == orig_len)
return -1;
else
return orig_len - len;
}
ssize_t
mpe_sendto(int socket, const void *buffer, size_t len,
int flags, const struct sockaddr *dest_addr,
socklen_t dest_len)
{
int written = 0;
int orig_len = len;
int maxio = (len>4096)?max_io_size(socket):INT_MAX;
const char *buf = (const char *)buffer;
do {
written =
sendto(socket, buf, len>maxio?maxio:len, flags, dest_addr, dest_len);
if (written < 0)
break;
len -= written;
buf += written;
} while (len > 0);
if (written < 0 && len == orig_len)
return -1;
else
return orig_len - len;
}
ssize_t
mpe_recv(int socket, void *buffer, size_t len, int flags)
{
int maxio;
if (len > 4096 && (len > (maxio = max_io_size(socket))))
len = maxio;
return recv(socket, buffer, len, flags);
}
ssize_t
mpe_recvfrom(int socket, void *buffer, size_t len,
int flags, struct sockaddr *address,
socklen_t *address_len)
{
int maxio;
if (len > 4096 && (len > (maxio = max_io_size(socket))))
len = maxio;
return recvfrom(socket, buffer, len, flags, address, address_len);
}
/*
I didn't do thse two:
ssize_t mpe_recvmsg(int, struct msghdr *, int);
ssize_t mpe_sendmsg(int, const struct msghdr *, int);
*/
/*
* On MPE/iX (at least version 6.0), a getsockname()
* performed on a socket that is listening
* will return INADDR_ANY, even if you used
* bind to bind it to a particular IP address.
*
* (In fact, it appears that the socket always acts as
* if you used INADDR_ANY.)
*
* Here I save the IP address used in bind
* So I can get it in getsockname()
*
*/
/* I just save 40. Usually one or two should be enough
*/
int
mpe_connect(int socket,
const struct sockaddr *address,
socklen_t address_len)
{
int ret = connect(socket, address, address_len);
if (ret < 0 && errno == EINPROGRESS)
{
/* Need to call getsockopt to clear socket error */
int socket_error;
socklen_t err_size = sizeof(socket_error);
(void)getsockopt(socket, SOL_SOCKET, SO_ERROR,
&socket_error, &err_size);
errno = EINPROGRESS;
}
return ret;
}
static struct {
int fd;
struct in_addr holdaddr;
} holdbind[40];
#define HOLDBINDLAST ((sizeof(holdbind))/(sizeof(holdbind[0])))
static int nextbind;
/*
* Fix peculiarities of bind() on MPE
* 1. call GETPRIVMODE to bind to ports < 1024
* 2. save IP address for future calls to getsockname
* 3. set IP address to 0 (INADDR_ANY)
*/
int
mpe_bind(int socket, const struct sockaddr *address, socklen_t address_len)
{
int i;
int result;
int mpeprivmode=0;
extern void GETPRIVMODE(void);
extern void GETUSERMODE(void);
for (i = 0; i<HOLDBINDLAST; i++) {
if (holdbind[i].fd == socket)
break;
}
/* If we didn't find previously used slot, use next */
if (i == HOLDBINDLAST)
i = nextbind;
holdbind[i].fd = socket;
memset(&holdbind[i].holdaddr, '\0', sizeof(holdbind[i].holdaddr));
if (address->sa_family == AF_INET
&& address_len >= offsetof(struct sockaddr_in, sin_addr)
+sizeof(struct in_addr)) {
holdbind[i].holdaddr = ((struct sockaddr_in *)address)->sin_addr;
}
if (i == nextbind)
{
if (++nextbind >= HOLDBINDLAST)
nextbind = 0;
}
if (address->sa_family == AF_INET)
{
/* The address *MUST* stupidly be zero. */
((struct sockaddr_in *)address)->sin_addr.s_addr = INADDR_ANY;
/* PRIV mode is required to bind() to ports < 1024. */
if (((struct sockaddr_in *)address)->sin_port < 1024 &&
((struct sockaddr_in *)address)->sin_port > 0) {
GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
mpeprivmode = 1;
}
}
result = bind(socket, address, address_len);
if (mpeprivmode)
{
GETUSERMODE();
}
return result;
}
int
mpe_getsockname(int socket, struct sockaddr *address, socklen_t *address_len)
{
int ret;
ret = getsockname(socket, address, address_len);
if (ret == 0
&& address->sa_family == AF_INET
&& *address_len >= offsetof(struct sockaddr_in, sin_addr)
+sizeof(struct in_addr)
&& ((struct sockaddr_in *)address)->sin_addr.s_addr == INADDR_ANY) {
int i;
for (i=0; i<HOLDBINDLAST; i++) {
if (holdbind[i].fd == socket)
{
((struct sockaddr_in *)address)->sin_addr.s_addr
= holdbind[i].holdaddr.s_addr;
break;
}
}
}
return ret;
}
int
mpe_getpeername(int socket, struct sockaddr *address, socklen_t *address_len)
{
int ret;
ret = getpeername(socket, address, address_len);
if (ret == 0)
{
/* Try a zero-length write to see if socket really connected */
int written = write(socket, "", 0);
if (written < 0)
ret = -1;
}
return ret;
}
static int
max_io_size(int filedes)
{
int save_errno;
struct sockaddr sa;
int len;
int result = INT_MAX; /* all other files */
save_errno = errno;
len = sizeof sa;
if (getsockname(filedes, &sa, &len) == -1)
{
if (errno == EAFNOSUPPORT) /* AF_UNIX socket */
result = 4096;
errno = save_errno;
} else {
result = 30000; /* AF_INET sock max */
}
return result;
}