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40 * 5/18/96 Taken from nec.h -- chrisk@netscape.com
41 * 3/14/97 Modified for nspr20 -- chrisk@netscape.com
43 #ifndef nspr_reliantunix_defs_h___
44 #define nspr_reliantunix_defs_h___
47 * Internal configuration macros
50 #define PR_LINKER_ARCH "sinix"
51 #define _PR_SI_SYSNAME "SINIX"
52 #define _PR_SI_ARCHITECTURE "mips"
53 #define PR_DLL_SUFFIX ".so"
55 #define _PR_VMBASE 0x30000000
56 #define _PR_STACK_VMBASE 0x50000000
57 #define _MD_DEFAULT_STACK_SIZE (2*65536L)
58 #define _MD_MMAP_FLAGS MAP_PRIVATE|MAP_FIXED
60 #undef HAVE_STACK_GROWING_UP
63 #define NEED_STRFTIME_LOCK
65 #define HAVE_NETCONFIG
66 #define HAVE_WEAK_IO_SYMBOLS
67 #define HAVE_WEAK_MALLOC_SYMBOLS
68 #define _PR_RECV_BROKEN /* recv doesn't work on Unix Domain Sockets */
69 #define _PR_POLL_AVAILABLE
71 #define _PR_STAT_HAS_ST_ATIM
72 #define _PR_NO_LARGE_FILES
75 * Mike Patnode indicated that it is possibly safe now to use context-switching
76 * calls that do not change the signal mask, like setjmp vs. sigsetjmp.
77 * So we'll use our homegrown, getcontext/setcontext-compatible stuff which
78 * will save us the getcontext/setcontext system calls at each context switch.
79 * It already works in FastTrack 2.01, so it should do it here :-)
82 #define USE_SETCXT /* temporarily disabled... */
87 /* use non-syscall machine language replacement */
88 #define _GETCONTEXT getcxt
89 #define _SETCONTEXT setcxt
90 /* defined in os_ReliantUNIX.s */
91 extern int getcxt(ucontext_t *);
92 extern int setcxt(ucontext_t *);
94 #define _GETCONTEXT getcontext
95 #define _SETCONTEXT setcontext
98 #define _MD_GET_SP(_t) (_t)->md.context.uc_mcontext.gpregs[CXT_SP]
99 #define _PR_CONTEXT_TYPE ucontext_t
100 #define _PR_NUM_GCREGS NGREG
102 #define CONTEXT(_thread) (&(_thread)->md.context)
104 #define _PR_IS_NATIVE_THREAD_SUPPORTED() 0
107 ** Machine-dependent (MD) data structures.
110 _PR_CONTEXT_TYPE context;
115 struct _MDThreadStack {
123 struct _MDSemaphore {
136 * md-specific cpu structure field
138 #define _PR_MD_MAX_OSFD FD_SETSIZE
142 PRUint32 ioq_timeout;
143 PRInt32 ioq_max_osfd;
144 PRInt32 ioq_osfd_cnt;
146 fd_set fd_read_set, fd_write_set, fd_exception_set;
147 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
148 fd_exception_cnt[_PR_MD_MAX_OSFD];
150 struct pollfd *ioq_pollfds;
151 int ioq_pollfds_size;
152 #endif /* _PR_USE_POLL */
155 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ)
156 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
157 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set)
158 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt)
159 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set)
160 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt)
161 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set)
162 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt)
163 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout)
164 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd)
165 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt)
166 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds)
167 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size)
169 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32
172 struct _MDCPU_Unix md_unix;
175 #define _MD_INIT_LOCKS()
176 #define _MD_NEW_LOCK(lock) PR_SUCCESS
177 #define _MD_FREE_LOCK(lock)
178 #define _MD_LOCK(lock)
179 #define _MD_UNLOCK(lock)
180 #define _MD_INIT_IO()
181 #define _MD_IOQ_LOCK()
182 #define _MD_IOQ_UNLOCK()
185 ** Initialize the thread context preparing it to execute "_main()"
186 ** - get a nice, fresh context
187 ** - set its SP to the stack we allcoated for it
188 ** - set it to start things at "e"
190 #define _MD_INIT_CONTEXT(thread, _sp, _main, status) \
193 _GETCONTEXT(CONTEXT(thread)); \
194 /* this is supposed to point to the stack BASE, not to SP */ \
195 CONTEXT(thread)->uc_stack.ss_sp = thread->stack->stackBottom; \
196 CONTEXT(thread)->uc_stack.ss_size = thread->stack->stackSize; \
197 CONTEXT(thread)->uc_mcontext.gpregs[CXT_SP] = ((unsigned long)_sp - 128) & 0xfffffff8; \
198 CONTEXT(thread)->uc_mcontext.gpregs[CXT_T9] = _main; \
199 CONTEXT(thread)->uc_mcontext.gpregs[CXT_EPC] = _main; \
200 CONTEXT(thread)->uc_mcontext.gpregs[CXT_RA] = 0; \
201 thread->no_sched = 0; \
205 ** Save current context as it is scheduled away
207 #define _MD_SWITCH_CONTEXT(_thread) \
209 if (!_GETCONTEXT(CONTEXT(_thread))) { \
210 _MD_SAVE_ERRNO(_thread); \
211 _MD_SET_LAST_THREAD(_thread); \
217 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT or set up
218 ** by _MD_INIT_CONTEXT
219 ** CXT_V0 is the register that holds the return value.
220 ** We must set it to 1 so that we can see if the return from
221 ** getcontext() is the result of calling getcontext() or
223 ** setting a context got with getcontext() appears to
224 ** return from getcontext(), too!
225 ** CXT_A3 is the register that holds status when returning
226 ** from a syscall. It is set to 0 to indicate success,
227 ** because we want getcontext() on the other side of the magic
230 #define _MD_RESTORE_CONTEXT(_thread) \
232 ucontext_t *uc = CONTEXT(_thread); \
233 uc->uc_mcontext.gpregs[CXT_V0] = 1;\
234 uc->uc_mcontext.gpregs[CXT_A3] = 0;\
235 _MD_RESTORE_ERRNO(_thread); \
236 _MD_SET_CURRENT_THREAD(_thread); \
240 #define _MD_SAVE_ERRNO(t) (t)->md.errcode = errno;
241 #define _MD_RESTORE_ERRNO(t) errno = (t)->md.errcode;
243 #define _MD_GET_INTERVAL _PR_UNIX_GetInterval
244 #define _MD_INTERVAL_PER_SEC _PR_UNIX_TicksPerSecond
246 #define _MD_EARLY_INIT _MD_EarlyInit
247 #define _MD_FINAL_INIT _PR_UnixInit
248 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
249 #define _MD_INIT_THREAD _MD_InitializeThread
250 #define _MD_EXIT_THREAD(thread)
251 #define _MD_SUSPEND_THREAD(thread)
252 #define _MD_RESUME_THREAD(thread)
253 #define _MD_CLEAN_THREAD(_thread)
255 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
256 #define S_ISSOCK(mode) ((mode&0xF000) == 0xC000)
258 #if !defined(S_ISLNK) && defined(S_IFLNK)
259 #define S_ISLNK(mode) ((mode&0xA000) == 0xC000)
262 #include <sys/time.h>
263 #include <sys/types.h>
264 #include <sys/select.h>
265 extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
266 fd_set *execptfds, struct timeval *timeout);
267 #define _MD_SELECT(nfds,r,w,e,tv) _select(nfds,r,w,e,tv)
268 #define _MD_POLL _poll
270 #endif /* nspr_reliantunix_defs_h___ */