_reliantunix.h
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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the Netscape Portable Runtime (NSPR).
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- /*
- * reliantunix.h
- * 5/18/96 Taken from nec.h -- chrisk@netscape.com
- * 3/14/97 Modified for nspr20 -- chrisk@netscape.com
- */
- #ifndef nspr_reliantunix_defs_h___
- #define nspr_reliantunix_defs_h___
- /*
- * Internal configuration macros
- */
- #define PR_LINKER_ARCH "sinix"
- #define _PR_SI_SYSNAME "SINIX"
- #define _PR_SI_ARCHITECTURE "mips"
- #define PR_DLL_SUFFIX ".so"
- #define _PR_VMBASE 0x30000000
- #define _PR_STACK_VMBASE 0x50000000
- #define _MD_DEFAULT_STACK_SIZE (2*65536L)
- #define _MD_MMAP_FLAGS MAP_PRIVATE|MAP_FIXED
- #undef HAVE_STACK_GROWING_UP
- #define HAVE_DLL
- #define USE_DLFCN
- #define NEED_STRFTIME_LOCK
- #define NEED_TIME_R
- #define HAVE_NETCONFIG
- #define HAVE_WEAK_IO_SYMBOLS
- #define HAVE_WEAK_MALLOC_SYMBOLS
- #define _PR_RECV_BROKEN /* recv doesn't work on Unix Domain Sockets */
- #define _PR_POLL_AVAILABLE
- #define _PR_USE_POLL
- #define _PR_STAT_HAS_ST_ATIM
- #define _PR_NO_LARGE_FILES
- /*
- * Mike Patnode indicated that it is possibly safe now to use context-switching
- * calls that do not change the signal mask, like setjmp vs. sigsetjmp.
- * So we'll use our homegrown, getcontext/setcontext-compatible stuff which
- * will save us the getcontext/setcontext system calls at each context switch.
- * It already works in FastTrack 2.01, so it should do it here :-)
- * - chrisk 040497
- */
- #define USE_SETCXT /* temporarily disabled... */
- #include <ucontext.h>
-
- #ifdef USE_SETCXT
- /* use non-syscall machine language replacement */
- #define _GETCONTEXT getcxt
- #define _SETCONTEXT setcxt
- /* defined in os_ReliantUNIX.s */
- extern int getcxt(ucontext_t *);
- extern int setcxt(ucontext_t *);
- #else
- #define _GETCONTEXT getcontext
- #define _SETCONTEXT setcontext
- #endif
- #define _MD_GET_SP(_t) (_t)->md.context.uc_mcontext.gpregs[CXT_SP]
- #define _PR_CONTEXT_TYPE ucontext_t
- #define _PR_NUM_GCREGS NGREG
-
- #define CONTEXT(_thread) (&(_thread)->md.context)
- #define _PR_IS_NATIVE_THREAD_SUPPORTED() 0
-
- /*
- ** Machine-dependent (MD) data structures.
- */
- struct _MDThread {
- _PR_CONTEXT_TYPE context;
- int id;
- int errcode;
- };
- struct _MDThreadStack {
- PRInt8 notused;
- };
- struct _MDLock {
- PRInt8 notused;
- };
- struct _MDSemaphore {
- PRInt8 notused;
- };
- struct _MDCVar {
- PRInt8 notused;
- };
- struct _MDSegment {
- PRInt8 notused;
- };
- /*
- * md-specific cpu structure field
- */
- #define _PR_MD_MAX_OSFD FD_SETSIZE
- struct _MDCPU_Unix {
- PRCList ioQ;
- PRUint32 ioq_timeout;
- PRInt32 ioq_max_osfd;
- PRInt32 ioq_osfd_cnt;
- #ifndef _PR_USE_POLL
- fd_set fd_read_set, fd_write_set, fd_exception_set;
- PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
- fd_exception_cnt[_PR_MD_MAX_OSFD];
- #else
- struct pollfd *ioq_pollfds;
- int ioq_pollfds_size;
- #endif /* _PR_USE_POLL */
- };
- #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ)
- #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
- #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set)
- #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt)
- #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set)
- #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt)
- #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set)
- #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt)
- #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout)
- #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd)
- #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt)
- #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds)
- #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size)
- #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32
- struct _MDCPU {
- struct _MDCPU_Unix md_unix;
- };
- #define _MD_INIT_LOCKS()
- #define _MD_NEW_LOCK(lock) PR_SUCCESS
- #define _MD_FREE_LOCK(lock)
- #define _MD_LOCK(lock)
- #define _MD_UNLOCK(lock)
- #define _MD_INIT_IO()
- #define _MD_IOQ_LOCK()
- #define _MD_IOQ_UNLOCK()
- /*
- ** Initialize the thread context preparing it to execute "_main()"
- ** - get a nice, fresh context
- ** - set its SP to the stack we allcoated for it
- ** - set it to start things at "e"
- */
- #define _MD_INIT_CONTEXT(thread, _sp, _main, status)
- PR_BEGIN_MACRO
- *status = PR_TRUE;
- _GETCONTEXT(CONTEXT(thread));
- /* this is supposed to point to the stack BASE, not to SP */
- CONTEXT(thread)->uc_stack.ss_sp = thread->stack->stackBottom;
- CONTEXT(thread)->uc_stack.ss_size = thread->stack->stackSize;
- CONTEXT(thread)->uc_mcontext.gpregs[CXT_SP] = ((unsigned long)_sp - 128) & 0xfffffff8;
- CONTEXT(thread)->uc_mcontext.gpregs[CXT_T9] = _main;
- CONTEXT(thread)->uc_mcontext.gpregs[CXT_EPC] = _main;
- CONTEXT(thread)->uc_mcontext.gpregs[CXT_RA] = 0;
- thread->no_sched = 0;
- PR_END_MACRO
-
- /*
- ** Save current context as it is scheduled away
- */
- #define _MD_SWITCH_CONTEXT(_thread)
- PR_BEGIN_MACRO
- if (!_GETCONTEXT(CONTEXT(_thread))) {
- _MD_SAVE_ERRNO(_thread);
- _MD_SET_LAST_THREAD(_thread);
- _PR_Schedule();
- }
- PR_END_MACRO
-
- /*
- ** Restore a thread context, saved by _MD_SWITCH_CONTEXT or set up
- ** by _MD_INIT_CONTEXT
- ** CXT_V0 is the register that holds the return value.
- ** We must set it to 1 so that we can see if the return from
- ** getcontext() is the result of calling getcontext() or
- ** setcontext()...
- ** setting a context got with getcontext() appears to
- ** return from getcontext(), too!
- ** CXT_A3 is the register that holds status when returning
- ** from a syscall. It is set to 0 to indicate success,
- ** because we want getcontext() on the other side of the magic
- ** door to be ok.
- */
- #define _MD_RESTORE_CONTEXT(_thread)
- PR_BEGIN_MACRO
- ucontext_t *uc = CONTEXT(_thread);
- uc->uc_mcontext.gpregs[CXT_V0] = 1;
- uc->uc_mcontext.gpregs[CXT_A3] = 0;
- _MD_RESTORE_ERRNO(_thread);
- _MD_SET_CURRENT_THREAD(_thread);
- _SETCONTEXT(uc);
- PR_END_MACRO
- #define _MD_SAVE_ERRNO(t) (t)->md.errcode = errno;
- #define _MD_RESTORE_ERRNO(t) errno = (t)->md.errcode;
- #define _MD_GET_INTERVAL _PR_UNIX_GetInterval
- #define _MD_INTERVAL_PER_SEC _PR_UNIX_TicksPerSecond
- #define _MD_EARLY_INIT _MD_EarlyInit
- #define _MD_FINAL_INIT _PR_UnixInit
- #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
- #define _MD_INIT_THREAD _MD_InitializeThread
- #define _MD_EXIT_THREAD(thread)
- #define _MD_SUSPEND_THREAD(thread)
- #define _MD_RESUME_THREAD(thread)
- #define _MD_CLEAN_THREAD(_thread)
- #if !defined(S_ISSOCK) && defined(S_IFSOCK)
- #define S_ISSOCK(mode) ((mode&0xF000) == 0xC000)
- #endif
- #if !defined(S_ISLNK) && defined(S_IFLNK)
- #define S_ISLNK(mode) ((mode&0xA000) == 0xC000)
- #endif
- #include <sys/time.h>
- #include <sys/types.h>
- #include <sys/select.h>
- extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
- fd_set *execptfds, struct timeval *timeout);
- #define _MD_SELECT(nfds,r,w,e,tv) _select(nfds,r,w,e,tv)
- #define _MD_POLL _poll
- #endif /* nspr_reliantunix_defs_h___ */