/* -*- 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 #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 #include #include 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___ */