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 /* 36 * reliantunix.h 37 * 5/18/96 Taken from nec.h -- chrisk (at) netscape.com 38 * 3/14/97 Modified for nspr20 -- chrisk (at) netscape.com 39 */ 40 #ifndef nspr_reliantunix_defs_h___ 41 #define nspr_reliantunix_defs_h___ 42 43 /* 44 * Internal configuration macros 45 */ 46 47 #define PR_LINKER_ARCH "sinix" 48 #define _PR_SI_SYSNAME "SINIX" 49 #define _PR_SI_ARCHITECTURE "mips" 50 #define PR_DLL_SUFFIX ".so" 51 52 #define _PR_VMBASE 0x30000000 53 #define _PR_STACK_VMBASE 0x50000000 54 #define _MD_DEFAULT_STACK_SIZE (2*65536L) 55 #define _MD_MMAP_FLAGS MAP_PRIVATE|MAP_FIXED 56 57 #undef HAVE_STACK_GROWING_UP 58 #define HAVE_DLL 59 #define USE_DLFCN 60 #define NEED_STRFTIME_LOCK 61 #define NEED_TIME_R 62 #define HAVE_NETCONFIG 63 #define HAVE_WEAK_IO_SYMBOLS 64 #define HAVE_WEAK_MALLOC_SYMBOLS 65 #define _PR_RECV_BROKEN /* recv doesn't work on Unix Domain Sockets */ 66 #define _PR_POLL_AVAILABLE 67 #define _PR_USE_POLL 68 #define _PR_STAT_HAS_ST_ATIM 69 #define _PR_NO_LARGE_FILES 70 71 /* 72 * Mike Patnode indicated that it is possibly safe now to use context-switching 73 * calls that do not change the signal mask, like setjmp vs. sigsetjmp. 74 * So we'll use our homegrown, getcontext/setcontext-compatible stuff which 75 * will save us the getcontext/setcontext system calls at each context switch. 76 * It already works in FastTrack 2.01, so it should do it here :-) 77 * - chrisk 040497 78 */ 79 #define USE_SETCXT /* temporarily disabled... */ 80 81 #include <ucontext.h> 82 83 #ifdef USE_SETCXT 84 /* use non-syscall machine language replacement */ 85 #define _GETCONTEXT getcxt 86 #define _SETCONTEXT setcxt 87 /* defined in os_ReliantUNIX.s */ 88 extern int getcxt(ucontext_t *); 89 extern int setcxt(ucontext_t *); 90 #else 91 #define _GETCONTEXT getcontext 92 #define _SETCONTEXT setcontext 93 #endif 94 95 #define _MD_GET_SP(_t) (_t)->md.context.uc_mcontext.gpregs[CXT_SP] 96 #define _PR_CONTEXT_TYPE ucontext_t 97 #define _PR_NUM_GCREGS NGREG 98 99 #define CONTEXT(_thread) (&(_thread)->md.context) 100 101 #define _PR_IS_NATIVE_THREAD_SUPPORTED() 0 102 103 /* 104 ** Machine-dependent (MD) data structures. 105 */ 106 struct _MDThread { 107 _PR_CONTEXT_TYPE context; 108 int id; 109 int errcode; 110 }; 111 112 struct _MDThreadStack { 113 PRInt8 notused; 114 }; 115 116 struct _MDLock { 117 PRInt8 notused; 118 }; 119 120 struct _MDSemaphore { 121 PRInt8 notused; 122 }; 123 124 struct _MDCVar { 125 PRInt8 notused; 126 }; 127 128 struct _MDSegment { 129 PRInt8 notused; 130 }; 131 132 /* 133 * md-specific cpu structure field 134 */ 135 #define _PR_MD_MAX_OSFD FD_SETSIZE 136 137 struct _MDCPU_Unix { 138 PRCList ioQ; 139 PRUint32 ioq_timeout; 140 PRInt32 ioq_max_osfd; 141 PRInt32 ioq_osfd_cnt; 142 #ifndef _PR_USE_POLL 143 fd_set fd_read_set, fd_write_set, fd_exception_set; 144 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], 145 fd_exception_cnt[_PR_MD_MAX_OSFD]; 146 #else 147 struct pollfd *ioq_pollfds; 148 int ioq_pollfds_size; 149 #endif /* _PR_USE_POLL */ 150 }; 151 152 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) 153 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) 154 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) 155 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) 156 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) 157 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) 158 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) 159 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) 160 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) 161 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) 162 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) 163 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) 164 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) 165 166 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 167 168 struct _MDCPU { 169 struct _MDCPU_Unix md_unix; 170 }; 171 172 #define _MD_INIT_LOCKS() 173 #define _MD_NEW_LOCK(lock) PR_SUCCESS 174 #define _MD_FREE_LOCK(lock) 175 #define _MD_LOCK(lock) 176 #define _MD_UNLOCK(lock) 177 #define _MD_INIT_IO() 178 #define _MD_IOQ_LOCK() 179 #define _MD_IOQ_UNLOCK() 180 181 /* 182 ** Initialize the thread context preparing it to execute "_main()" 183 ** - get a nice, fresh context 184 ** - set its SP to the stack we allcoated for it 185 ** - set it to start things at "e" 186 */ 187 #define _MD_INIT_CONTEXT(thread, _sp, _main, status) \ 188 PR_BEGIN_MACRO \ 189 *status = PR_TRUE; \ 190 _GETCONTEXT(CONTEXT(thread)); \ 191 /* this is supposed to point to the stack BASE, not to SP */ \ 192 CONTEXT(thread)->uc_stack.ss_sp = thread->stack->stackBottom; \ 193 CONTEXT(thread)->uc_stack.ss_size = thread->stack->stackSize; \ 194 CONTEXT(thread)->uc_mcontext.gpregs[CXT_SP] = ((unsigned long)_sp - 128) & 0xfffffff8; \ 195 CONTEXT(thread)->uc_mcontext.gpregs[CXT_T9] = _main; \ 196 CONTEXT(thread)->uc_mcontext.gpregs[CXT_EPC] = _main; \ 197 CONTEXT(thread)->uc_mcontext.gpregs[CXT_RA] = 0; \ 198 thread->no_sched = 0; \ 199 PR_END_MACRO 200 201 /* 202 ** Save current context as it is scheduled away 203 */ 204 #define _MD_SWITCH_CONTEXT(_thread) \ 205 PR_BEGIN_MACRO \ 206 if (!_GETCONTEXT(CONTEXT(_thread))) { \ 207 _MD_SAVE_ERRNO(_thread); \ 208 _MD_SET_LAST_THREAD(_thread); \ 209 _PR_Schedule(); \ 210 } \ 211 PR_END_MACRO 212 213 /* 214 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT or set up 215 ** by _MD_INIT_CONTEXT 216 ** CXT_V0 is the register that holds the return value. 217 ** We must set it to 1 so that we can see if the return from 218 ** getcontext() is the result of calling getcontext() or 219 ** setcontext()... 220 ** setting a context got with getcontext() appears to 221 ** return from getcontext(), too! 222 ** CXT_A3 is the register that holds status when returning 223 ** from a syscall. It is set to 0 to indicate success, 224 ** because we want getcontext() on the other side of the magic 225 ** door to be ok. 226 */ 227 #define _MD_RESTORE_CONTEXT(_thread) \ 228 PR_BEGIN_MACRO \ 229 ucontext_t *uc = CONTEXT(_thread); \ 230 uc->uc_mcontext.gpregs[CXT_V0] = 1;\ 231 uc->uc_mcontext.gpregs[CXT_A3] = 0;\ 232 _MD_RESTORE_ERRNO(_thread); \ 233 _MD_SET_CURRENT_THREAD(_thread); \ 234 _SETCONTEXT(uc); \ 235 PR_END_MACRO 236 237 #define _MD_SAVE_ERRNO(t) (t)->md.errcode = errno; 238 #define _MD_RESTORE_ERRNO(t) errno = (t)->md.errcode; 239 240 #define _MD_GET_INTERVAL _PR_UNIX_GetInterval 241 #define _MD_INTERVAL_PER_SEC _PR_UNIX_TicksPerSecond 242 243 #define _MD_EARLY_INIT _MD_EarlyInit 244 #define _MD_FINAL_INIT _PR_UnixInit 245 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu) 246 #define _MD_INIT_THREAD _MD_InitializeThread 247 #define _MD_EXIT_THREAD(thread) 248 #define _MD_SUSPEND_THREAD(thread) 249 #define _MD_RESUME_THREAD(thread) 250 #define _MD_CLEAN_THREAD(_thread) 251 252 #if !defined(S_ISSOCK) && defined(S_IFSOCK) 253 #define S_ISSOCK(mode) ((mode&0xF000) == 0xC000) 254 #endif 255 #if !defined(S_ISLNK) && defined(S_IFLNK) 256 #define S_ISLNK(mode) ((mode&0xA000) == 0xC000) 257 #endif 258 259 #include <sys/time.h> 260 #include <sys/types.h> 261 #include <sys/select.h> 262 extern int _select(int nfds, fd_set *readfds, fd_set *writefds, 263 fd_set *execptfds, struct timeval *timeout); 264 #define _MD_SELECT(nfds,r,w,e,tv) _select(nfds,r,w,e,tv) 265 #define _MD_POLL _poll 266 267 #endif /* nspr_reliantunix_defs_h___ */ 268
