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#ifndef nspr_nec_defs_h___
36#define nspr_nec_defs_h___
37
38/*
39 * Internal configuration macros
40 */
41
42#define PR_LINKER_ARCH  "nec"
43#define _PR_SI_SYSNAME "NEC"
44#define _PR_SI_ARCHITECTURE "mips"
45#define PR_DLL_SUFFIX		".so"
46
47#define _PR_STACK_VMBASE        0x50000000
48#define _MD_DEFAULT_STACK_SIZE  65536L
49#define _MD_MMAP_FLAGS          MAP_PRIVATE
50
51#undef  HAVE_STACK_GROWING_UP
52#define HAVE_DLL
53#define USE_DLFCN
54#define NEED_TIME_R
55#define NEED_STRFTIME_LOCK
56#define _PR_POLL_AVAILABLE
57#define _PR_USE_POLL
58#define _PR_NO_LARGE_FILES
59#define _PR_STAT_HAS_ST_ATIM_UNION
60
61#include <ucontext.h>
62#include <sys/regset.h>
63
64#define PR_NUM_GCREGS   NGREG
65#define PR_CONTEXT_TYPE ucontext_t
66
67#define CONTEXT(_thread) (&(_thread)->md.context)
68
69#define _MD_GET_SP(_t)    (_t)->md.context.uc_mcontext.gregs[CXT_SP]
70
71/*
72** Initialize the thread context preparing it to execute "e(o,a)"
73*/
74#define _MD_INIT_CONTEXT(thread, _sp, _main, status)               \
75{                                                                   \
76    *status = PR_TRUE; \
77    getcontext(CONTEXT(thread));                                    \
78    CONTEXT(thread)->uc_stack.ss_sp = (char*) (thread)->stack->stackBottom; \
79    CONTEXT(thread)->uc_stack.ss_size = (thread)->stack->stackSize; \
80    _MD_GET_SP(thread) = (greg_t) _sp - 64;             \
81    makecontext(CONTEXT(thread), _main, 0);              \
82}
83
84#define _MD_SWITCH_CONTEXT(_thread)      \
85    if (!getcontext(CONTEXT(_thread))) { \
86        (_thread)->md.errcode = errno;      \
87        _PR_Schedule();                  \
88    }
89
90/*
91** Restore a thread context, saved by _MD_SWITCH_CONTEXT
92*/
93#define _MD_RESTORE_CONTEXT(_thread)   \
94{                                      \
95    ucontext_t *uc = CONTEXT(_thread); \
96    uc->uc_mcontext.gregs[CXT_V0] = 1; \
97    uc->uc_mcontext.gregs[CXT_A3] = 0; \
98    errno = (_thread)->md.errcode;     \
99    _MD_SET_CURRENT_THREAD(_thread);   \
100    setcontext(uc);                    \
101}
102
103/* Machine-dependent (MD) data structures */
104
105struct _MDThread {
106    PR_CONTEXT_TYPE context;
107    int id;
108    int errcode;
109};
110
111struct _MDThreadStack {
112    PRInt8 notused;
113};
114
115struct _MDLock {
116    PRInt8 notused;
117};
118
119struct _MDSemaphore {
120    PRInt8 notused;
121};
122
123struct _MDCVar {
124    PRInt8 notused;
125};
126
127struct _MDSegment {
128    PRInt8 notused;
129};
130
131/*
132 * md-specific cpu structure field
133 */
134#define _PR_MD_MAX_OSFD FD_SETSIZE
135
136struct _MDCPU_Unix {
137    PRCList ioQ;
138    PRUint32 ioq_timeout;
139    PRInt32 ioq_max_osfd;
140    PRInt32 ioq_osfd_cnt;
141#ifndef _PR_USE_POLL
142    fd_set fd_read_set, fd_write_set, fd_exception_set;
143    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
144				fd_exception_cnt[_PR_MD_MAX_OSFD];
145#else
146	struct pollfd *ioq_pollfds;
147	int ioq_pollfds_size;
148#endif	/* _PR_USE_POLL */
149};
150
151#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
152#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
153#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
154#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
155#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
156#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
157#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
158#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
159#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
160#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
161#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
162#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
163#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
164
165#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
166
167struct _MDCPU {
168	struct _MDCPU_Unix md_unix;
169};
170
171#define _MD_INIT_LOCKS()
172#define _MD_NEW_LOCK(lock) PR_SUCCESS
173#define _MD_FREE_LOCK(lock)
174#define _MD_LOCK(lock)
175#define _MD_UNLOCK(lock)
176#define _MD_INIT_IO()
177#define _MD_IOQ_LOCK()
178#define _MD_IOQ_UNLOCK()
179
180#define _MD_EARLY_INIT          _MD_EarlyInit
181#define _MD_FINAL_INIT			_PR_UnixInit
182#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
183#define _MD_INIT_THREAD         _MD_InitializeThread
184#define _MD_EXIT_THREAD(thread)
185#define _MD_CLEAN_THREAD(_thread)
186
187#define _MD_SELECT _select
188#define _MD_POLL _poll
189
190#define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
191#define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
192
193#endif /* nspr_nec_defs_h___ */
194