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_nextstep_defs_h___
36#define nspr_nextstep_defs_h___
37
38#include "prthread.h"
39
40#include <bsd/libc.h>
41#include <bsd/syscall.h>
42
43/*	syscall() is not declared in NEXTSTEP's syscall.h ...
44*/
45extern int syscall(int number, ...);
46
47/*
48 * Internal configuration macros
49 */
50
51#define PR_LINKER_ARCH	"nextstep"
52#define _PR_SI_SYSNAME  "NEXTSTEP"
53#if defined(__sparc__)
54#define _PR_SI_ARCHITECTURE "sparc"
55#elif defined(__m68k__)
56#define _PR_SI_ARCHITECTURE "m68k"
57#elif defined(__i386__)
58#define _PR_SI_ARCHITECTURE "x86"
59#else
60error Unknown NEXTSTEP architecture
61#endif
62#define PR_DLL_SUFFIX		".so"
63
64#define _PR_VMBASE              0x30000000
65#define _PR_STACK_VMBASE	0x50000000
66#define _MD_DEFAULT_STACK_SIZE	65536L
67#define _MD_MMAP_FLAGS          MAP_PRIVATE
68
69#undef  HAVE_STACK_GROWING_UP
70
71#define HAVE_WEAK_MALLOC_SYMBOLS
72
73#define HAVE_DLL
74#define USE_MACH_DYLD
75#define _PR_STAT_HAS_ONLY_ST_ATIME
76#define _PR_NO_LARGE_FILES
77
78#define USE_SETJMP
79
80#ifndef _PR_PTHREADS
81
82#include <setjmp.h>
83
84#define PR_CONTEXT_TYPE	jmp_buf
85
86#define CONTEXT(_th) ((_th)->md.context)
87
88/* balazs.pataki@sztaki.hu:
89** __sparc__ is checked
90** __m68k__ is checked
91** __i386__ is a guess (one of the two defines should work)
92*/
93#if defined(__sparc__)
94#define _MD_GET_SP(_th)		(_th)->md.context[2]
95#elif defined(__m68k__)
96#define _MD_GET_SP(_th)		(_th)->md.context[2]
97#elif defined(__i386__)
98/* One of this two must be OK ... try using sc_onstack
99*/
100#define _MD_GET_SP(_th)    (((struct sigcontext *) (_th)->md.context)->sc_onstack)
101//#define _MD_GET_SP(_th)		(_th)->md.context[0].sc_esp
102#else
103error Unknown NEXTSTEP architecture
104#endif
105
106#define PR_NUM_GCREGS	_JBLEN
107
108/*
109** Initialize a thread context to run "_main()" when started
110*/
111#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
112{  \
113    *status = PR_TRUE;  \
114    if (setjmp(CONTEXT(_thread))) {  \
115        _main();  \
116    }  \
117    _MD_GET_SP(_thread) = (int) ((_sp) - 64); \
118}
119
120#define _MD_SWITCH_CONTEXT(_thread)  \
121    if (!setjmp(CONTEXT(_thread))) {  \
122	(_thread)->md.errcode = errno;  \
123	_PR_Schedule();  \
124    }
125
126/*
127** Restore a thread context, saved by _MD_SWITCH_CONTEXT
128*/
129#define _MD_RESTORE_CONTEXT(_thread) \
130{   \
131    errno = (_thread)->md.errcode;  \
132    _MD_SET_CURRENT_THREAD(_thread);  \
133    longjmp(CONTEXT(_thread), 1);  \
134}
135
136/* Machine-dependent (MD) data structures */
137
138struct _MDThread {
139    PR_CONTEXT_TYPE context;
140    int id;
141    int errcode;
142};
143
144struct _MDThreadStack {
145    PRInt8 notused;
146};
147
148struct _MDLock {
149    PRInt8 notused;
150};
151
152struct _MDSemaphore {
153    PRInt8 notused;
154};
155
156struct _MDCVar {
157    PRInt8 notused;
158};
159
160struct _MDSegment {
161    PRInt8 notused;
162};
163
164/*
165 * md-specific cpu structure field
166 */
167#define _PR_MD_MAX_OSFD FD_SETSIZE
168
169struct _MDCPU_Unix {
170    PRCList ioQ;
171    PRUint32 ioq_timeout;
172    PRInt32 ioq_max_osfd;
173    PRInt32 ioq_osfd_cnt;
174#ifndef _PR_USE_POLL
175    fd_set fd_read_set, fd_write_set, fd_exception_set;
176    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
177				fd_exception_cnt[_PR_MD_MAX_OSFD];
178#else
179	struct pollfd *ioq_pollfds;
180	int ioq_pollfds_size;
181#endif	/* _PR_USE_POLL */
182};
183
184#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
185#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
186#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
187#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
188#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
189#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
190#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
191#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
192#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
193#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
194#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
195#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
196#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
197
198#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
199
200struct _MDCPU {
201	struct _MDCPU_Unix md_unix;
202};
203
204#define _MD_INIT_LOCKS()
205#define _MD_NEW_LOCK(lock) PR_SUCCESS
206#define _MD_FREE_LOCK(lock)
207#define _MD_LOCK(lock)
208#define _MD_UNLOCK(lock)
209#define _MD_INIT_IO()
210#define _MD_IOQ_LOCK()
211#define _MD_IOQ_UNLOCK()
212
213extern PRStatus _MD_InitializeThread(PRThread *thread);
214
215#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
216#define _MD_INIT_THREAD                 _MD_InitializeThread
217#define _MD_EXIT_THREAD(thread)
218#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
219#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
220#define _MD_CLEAN_THREAD(_thread)
221
222extern PRStatus _MD_CREATE_THREAD(
223    PRThread *thread,
224    void (*start) (void *),
225    PRThreadPriority priority,
226    PRThreadScope scope,
227    PRThreadState state,
228    PRUint32 stackSize);
229extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
230extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
231extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
232extern void _MD_YIELD(void);
233
234#endif /* ! _PR_PTHREADS */
235
236extern void _MD_EarlyInit(void);
237extern PRIntervalTime _PR_UNIX_GetInterval(void);
238extern PRIntervalTime _PR_UNIX_TicksPerSecond(void);
239
240#define _MD_EARLY_INIT                  _MD_EarlyInit
241#define _MD_FINAL_INIT			_PR_UnixInit
242#define _MD_GET_INTERVAL                  _PR_UNIX_GetInterval
243#define _MD_INTERVAL_PER_SEC              _PR_UNIX_TicksPerSecond
244
245/*
246 * We wrapped the select() call.  _MD_SELECT refers to the built-in,
247 * unwrapped version.
248 */
249#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
250
251/* For writev() */
252#include <sys/uio.h>
253
254/* signal.h */
255/* 	balazs.pataki@sztaki.hu: this is stolen from sunos4.h. The things is that
256** 	NEXTSTEP doesn't support these flags for `struct sigaction's sa_flags, so
257**	I have to fake them ...
258*/
259#define SA_RESTART 0
260
261/* mmap */
262/* 	balazs.pataki@sztaki.hu: NEXTSTEP doesn't have mmap, at least not
263**	publically. We have sys/mman.h, but it doesn't declare mmap(), and
264**	PROT_NONE is also missing. syscall.h has entries for mmap, munmap, and
265**	mprotect so I wrap these in nextstep.c as  mmap(), munmap() and mprotect()
266**	and pray for it to work.
267**
268*/
269caddr_t mmap(caddr_t addr, size_t len, int prot, int flags,
270          int fildes, off_t off);
271int munmap(caddr_t addr, size_t len);
272int mprotect(caddr_t addr, size_t len, int prot);
273
274/*	my_mmap() is implemented in nextstep.c and is based on map_fd() of mach.
275*/
276caddr_t my_mmap(caddr_t addr, size_t len, int prot, int flags,
277          int fildes, off_t off);
278int my_munmap(caddr_t addr, size_t len);
279
280
281/*	string.h
282*/
283/* balazs.pataki@sztaki.hu: this is missing so implemenetd in nextstep.c ...
284*/
285char *strdup(const char *s1);
286
287/* unistd.h
288*/
289/* 	balazs.pataki@sztaki.hu: these functions are hidden, though correctly
290**	implemented in NEXTSTEP. Here I give the declaration for them to be used
291**	by prmalloc.c, and I have a wrapped syscall() version of them in nextstep.c
292*/
293int brk(void *endds);
294void *sbrk(int incr);
295
296#endif /* nspr_nextstep_defs_h___ */
297