Initial commit of upstream NSPR (4.7.3) and NSS3 (3.12).

third_party/nspr/mozilla/nsprpub/pr/include/md/_reliantunix.h

Index: third_party/nspr/mozilla/nsprpub/pr/include/md/_reliantunix.h
diff --git a/third_party/nspr/mozilla/nsprpub/pr/include/md/_reliantunix.h b/third_party/nspr/mozilla/nsprpub/pr/include/md/_reliantunix.h
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index 0000000000000000000000000000000000000000..a924e2f992b366ad1fb9666bc837db66e11f98d1
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+++ b/third_party/nspr/mozilla/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___ */