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Diffstat (limited to '')
-rw-r--r-- | src/libs/xpcom18a4/nsprpub/pr/include/md/_reliantunix.h | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/nsprpub/pr/include/md/_reliantunix.h b/src/libs/xpcom18a4/nsprpub/pr/include/md/_reliantunix.h new file mode 100644 index 00000000..a924e2f9 --- /dev/null +++ b/src/libs/xpcom18a4/nsprpub/pr/include/md/_reliantunix.h @@ -0,0 +1,270 @@ +/* -*- 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___ */ |