Home | History | Annotate | Download | only in md
      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /*
      3  * The contents of this file are subject to the Mozilla Public
      4  * License Version 1.1 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of
      6  * the License at http://www.mozilla.org/MPL/
      7  *
      8  * Software distributed under the License is distributed on an "AS
      9  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
     10  * implied. See the License for the specific language governing
     11  * rights and limitations under the License.
     12  *
     13  * The Original Code is the Netscape Portable Runtime (NSPR).
     14  *
     15  * The Initial Developer of the Original Code is Netscape
     16  * Communications Corporation.  Portions created by Netscape are
     17  * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
     18  * Rights Reserved.
     19  *
     20  * Contributor(s):
     21  *
     22  * Alternatively, the contents of this file may be used under the
     23  * terms of the GNU General Public License Version 2 or later (the
     24  * "GPL"), in which case the provisions of the GPL are applicable
     25  * instead of those above.  If you wish to allow use of your
     26  * version of this file only under the terms of the GPL and not to
     27  * allow others to use your version of this file under the MPL,
     28  * indicate your decision by deleting the provisions above and
     29  * replace them with the notice and other provisions required by
     30  * the GPL.  If you do not delete the provisions above, a recipient
     31  * may use your version of this file under either the MPL or the
     32  * GPL.
     33  */
     34 
     35 /*
     36 ** This is the OpenVMS machine dependant configuration file. It is based
     37 ** on the OSF/1 machine dependant file.
     38 */
     39 
     40 #ifndef nspr_openvms_defs_h___
     41 #define nspr_openvms_defs_h___
     42 
     43 /*
     44  * Internal configuration macros
     45  */
     46 
     47 #define PR_LINKER_ARCH	"OpenVMS"
     48 #define _PR_SI_SYSNAME	"OpenVMS"
     49 #ifdef __alpha
     50 #define _PR_SI_ARCHITECTURE "alpha"
     51 #else
     52 #define _PR_SI_ARCHITECTURE "vax"
     53 #endif
     54 #define PR_DLL_SUFFIX		".so"
     55 
     56 #define _PR_VMBASE		0x30000000
     57 #define _PR_STACK_VMBASE	0x50000000
     58 #define _MD_DEFAULT_STACK_SIZE	131072L
     59 #define _MD_MINIMUM_STACK_SIZE	131072L
     60 
     61 /*
     62 ** This is not defined on OpenVMS. I believe its only used in GC code, and
     63 ** isn't that only used in Java? Anyway, for now, let's keep the compiler
     64 ** happy.
     65 */
     66 #define SA_RESTART 0
     67 
     68 /*
     69 ** OpenVMS doesn't have these in socket.h.
     70 ** Does in later versions!
     71 */
     72 #if 0
     73 struct ip_mreq {
     74     struct in_addr  imr_multiaddr;      /* IP multicast address of group */
     75     struct in_addr  imr_interface;      /* local IP address of interface */
     76 };
     77 #endif
     78 
     79 /*
     80  * OSF1 needs the MAP_FIXED flag to ensure that mmap returns a pointer
     81  * with the upper 32 bits zero.  This is because Java sticks a pointer
     82  * into an int.
     83  */
     84 #define _MD_MMAP_FLAGS          MAP_PRIVATE|MAP_FIXED
     85 
     86 #undef  HAVE_STACK_GROWING_UP
     87 #undef 	HAVE_WEAK_IO_SYMBOLS
     88 #undef 	HAVE_WEAK_MALLOC_SYMBOLS
     89 #undef  HAVE_BSD_FLOCK
     90 
     91 #define NEED_TIME_R
     92 
     93 #define HAVE_DLL
     94 #define USE_DLFCN
     95 
     96 #define _PR_POLL_AVAILABLE
     97 #define _PR_USE_POLL
     98 #define _PR_STAT_HAS_ONLY_ST_ATIME
     99 #define _PR_NO_LARGE_FILES
    100 #define _PR_STRICT_ADDR_LEN
    101 
    102 /* IPv6 support */
    103 #ifdef _SOCKADDR_LEN
    104 #define _PR_HAVE_SOCKADDR_LEN
    105 #endif
    106 #define _PR_HAVE_GETIPNODEBYNAME
    107 #define _PR_HAVE_GETIPNODEBYADDR
    108 #define _PR_HAVE_GETADDRINFO
    109 #define _PR_INET6_PROBE
    110 #ifdef _PR_INET6
    111 #define _PR_HAVE_INET_NTOP
    112 #else
    113 #define AF_INET6 26
    114 #ifndef AI_CANONNAME
    115 #define AI_CANONNAME 0x00000002
    116 struct addrinfo {
    117     int ai_flags;
    118     int ai_family;
    119     int ai_socktype;
    120     int ai_protocol;
    121     size_t ai_addrlen;
    122     char *ai_canonname;
    123     struct sockaddr *ai_addr;
    124     struct addrinfo *ai_next;
    125 };
    126 #endif
    127 #define AI_V4MAPPED 0x00000010
    128 #define AI_ALL      0x00000008
    129 #define AI_ADDRCONFIG 0x00000020
    130 #endif
    131 
    132 #define _PR_HAVE_MD_SOCKADDR_IN6
    133 /* if we have a quadword field defined in the structure, then its length */
    134 /* will be a multiple of 8, and connect() won't accept 32 (it wants 28) */
    135 struct _md_in6_addr {
    136     union {
    137         PRUint8  _S6_u8[16];
    138         PRUint16 _S6_u16[8];
    139         PRUint32 _S6_u32[4];
    140     } _S6_un;
    141 };
    142 struct _md_sockaddr_in6 {
    143     PRUint16 sin6_family;
    144     PRUint16 sin6_port;
    145     PRUint32 sin6_flowinfo;
    146     struct _md_in6_addr sin6_addr;
    147     PRUint32 sin6_scope_id;
    148 };
    149 
    150 #undef  USE_SETJMP
    151 
    152 #include <setjmp.h>
    153 
    154 /*
    155  * A jmp_buf is actually a struct sigcontext.  The sc_sp field of
    156  * struct sigcontext is the stack pointer.
    157  */
    158 #define _MD_GET_SP(_t) (((struct sigcontext *) (_t)->md.context)->sc_sp)
    159 #define PR_NUM_GCREGS _JBLEN
    160 #define CONTEXT(_th) ((_th)->md.context)
    161 
    162 /*
    163 ** I am ifdef'ing these out because that's the way they are in FT.
    164 */
    165 #ifndef __VMS
    166 
    167 /*
    168 ** Initialize a thread context to run "_main()" when started
    169 */
    170 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
    171 {									  \
    172         *status = PR_TRUE;              \
    173     if (setjmp(CONTEXT(_thread))) {				\
    174 	(*_main)();						\
    175     }								\
    176     _MD_GET_SP(_thread) = (long) ((_sp) - 64);			\
    177     _MD_GET_SP(_thread) &= ~15;					\
    178 }
    179 
    180 #define _MD_SWITCH_CONTEXT(_thread)  \
    181     if (!setjmp(CONTEXT(_thread))) { \
    182 	(_thread)->md.errcode = errno;  \
    183 	_PR_Schedule();		     \
    184     }
    185 
    186 /*
    187 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
    188 */
    189 #define _MD_RESTORE_CONTEXT(_thread) \
    190 {				     \
    191     errno = (_thread)->md.errcode;     \
    192     _MD_SET_CURRENT_THREAD(_thread);	\
    193     longjmp(CONTEXT(_thread), 1);    \
    194 }
    195 
    196 #endif /* __VMS */
    197 
    198 /* Machine-dependent (MD) data structures */
    199 
    200 struct _MDThread {
    201     jmp_buf context;
    202     int id;
    203     int errcode;
    204 };
    205 
    206 struct _MDThreadStack {
    207     PRInt8 notused;
    208 };
    209 
    210 struct _MDLock {
    211     PRInt8 notused;
    212 };
    213 
    214 struct _MDSemaphore {
    215     PRInt8 notused;
    216 };
    217 
    218 struct _MDCVar {
    219     PRInt8 notused;
    220 };
    221 
    222 struct _MDSegment {
    223     PRInt8 notused;
    224 };
    225 
    226 /*
    227  * md-specific cpu structure field
    228  */
    229 #define _PR_MD_MAX_OSFD FD_SETSIZE
    230 
    231 struct _MDCPU_Unix {
    232     PRCList ioQ;
    233     PRUint32 ioq_timeout;
    234     PRInt32 ioq_max_osfd;
    235     PRInt32 ioq_osfd_cnt;
    236 #ifndef _PR_USE_POLL
    237     fd_set fd_read_set, fd_write_set, fd_exception_set;
    238     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
    239                               fd_exception_cnt[_PR_MD_MAX_OSFD];
    240 #else
    241       struct pollfd *ioq_pollfds;
    242       int ioq_pollfds_size;
    243 #endif        /* _PR_USE_POLL */
    244 };
    245 
    246 #define _PR_IOQ(_cpu)                 ((_cpu)->md.md_unix.ioQ)
    247 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
    248 #define _PR_FD_READ_SET(_cpu)         ((_cpu)->md.md_unix.fd_read_set)
    249 #define _PR_FD_READ_CNT(_cpu)         ((_cpu)->md.md_unix.fd_read_cnt)
    250 #define _PR_FD_WRITE_SET(_cpu)                ((_cpu)->md.md_unix.fd_write_set)
    251 #define _PR_FD_WRITE_CNT(_cpu)                ((_cpu)->md.md_unix.fd_write_cnt)
    252 #define _PR_FD_EXCEPTION_SET(_cpu)    ((_cpu)->md.md_unix.fd_exception_set)
    253 #define _PR_FD_EXCEPTION_CNT(_cpu)    ((_cpu)->md.md_unix.fd_exception_cnt)
    254 #define _PR_IOQ_TIMEOUT(_cpu)         ((_cpu)->md.md_unix.ioq_timeout)
    255 #define _PR_IOQ_MAX_OSFD(_cpu)                ((_cpu)->md.md_unix.ioq_max_osfd)
    256 #define _PR_IOQ_OSFD_CNT(_cpu)                ((_cpu)->md.md_unix.ioq_osfd_cnt)
    257 #define _PR_IOQ_POLLFDS(_cpu)         ((_cpu)->md.md_unix.ioq_pollfds)
    258 #define _PR_IOQ_POLLFDS_SIZE(_cpu)    ((_cpu)->md.md_unix.ioq_pollfds_size)
    259 
    260 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)        32
    261 
    262 struct _MDCPU {
    263 	struct _MDCPU_Unix md_unix;
    264 };
    265 
    266 #ifndef _PR_PTHREADS
    267 #define _MD_INIT_LOCKS()
    268 #endif
    269 #define _MD_NEW_LOCK(lock) PR_SUCCESS
    270 #define _MD_FREE_LOCK(lock)
    271 #define _MD_LOCK(lock)
    272 #define _MD_UNLOCK(lock)
    273 #define _MD_INIT_IO()
    274 #define _MD_IOQ_LOCK()
    275 #define _MD_IOQ_UNLOCK()
    276 
    277 /*
    278  * The following are copied from _sunos.h, _aix.h.  This means
    279  * some of them should probably be moved into _unixos.h.  But
    280  * _irix.h seems to be quite different in regard to these macros.
    281  */
    282 #define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
    283 extern PRIntervalTime _PR_UNIX_GetInterval(void);
    284 #define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
    285 extern PRIntervalTime _PR_UNIX_TicksPerSecond(void);
    286 
    287 #define _MD_EARLY_INIT		_MD_EarlyInit
    288 void _MD_EarlyInit(void);
    289 #define _MD_FINAL_INIT		_PR_UnixInit
    290 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
    291 #define _MD_INIT_THREAD         _MD_InitializeThread
    292 #ifdef _VMS_NOT_YET
    293 NSPR_API(void) _PR_InitThreads(
    294   PRThreadType type, PRThreadPriority priority, PRUintn maxPTDs);
    295 #endif
    296 #define _MD_EXIT_THREAD(thread)
    297 #define	_MD_SUSPEND_THREAD(thread)
    298 #define	_MD_RESUME_THREAD(thread)
    299 #define _MD_CLEAN_THREAD(_thread)
    300 
    301 /* The following defines unwrapped versions of select() and poll(). */
    302 extern int __select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
    303 #define _MD_SELECT              __select
    304 
    305 #ifndef __VMS
    306 #define _MD_POLL __poll
    307 extern int __poll(struct pollfd filedes[], unsigned int nfds, int timeout);
    308 #endif
    309 
    310 #ifdef __VMS
    311 NSPR_API(void) _PR_InitCPUs(void);
    312 NSPR_API(void) _PR_MD_START_INTERRUPTS(void);
    313 #endif
    314 
    315 /*
    316  * Atomic operations
    317  */
    318 #include <machine/builtins.h>
    319 #define _PR_HAVE_ATOMIC_OPS
    320 #define _MD_INIT_ATOMIC()
    321 #define _MD_ATOMIC_ADD(ptr,val) (__ATOMIC_ADD_LONG(ptr,val) + val)
    322 #define _MD_ATOMIC_INCREMENT(val) (__ATOMIC_INCREMENT_LONG(val) + 1)
    323 #define _MD_ATOMIC_DECREMENT(val) (__ATOMIC_DECREMENT_LONG(val) - 1)
    324 #define _MD_ATOMIC_SET(val, newval) __ATOMIC_EXCH_LONG(val, newval)
    325 
    326 extern int thread_suspend(PRThread *thr_id);
    327 extern int thread_resume(PRThread *thr_id);
    328 
    329 #endif /* nspr_openvms_defs_h___ */
    330