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 */ 45 extern 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 60 error 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 (at) 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 103 error 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 */ 137 138 struct _MDThread { 139 PR_CONTEXT_TYPE context; 140 int id; 141 int errcode; 142 }; 143 144 struct _MDThreadStack { 145 PRInt8 notused; 146 }; 147 148 struct _MDLock { 149 PRInt8 notused; 150 }; 151 152 struct _MDSemaphore { 153 PRInt8 notused; 154 }; 155 156 struct _MDCVar { 157 PRInt8 notused; 158 }; 159 160 struct _MDSegment { 161 PRInt8 notused; 162 }; 163 164 /* 165 * md-specific cpu structure field 166 */ 167 #define _PR_MD_MAX_OSFD FD_SETSIZE 168 169 struct _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) 32 199 200 struct _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() 212 213 extern 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) 221 222 extern PRStatus _MD_CREATE_THREAD( 223 PRThread *thread, 224 void (*start) (void *), 225 PRThreadPriority priority, 226 PRThreadScope scope, 227 PRThreadState state, 228 PRUint32 stackSize); 229 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); 230 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); 231 extern PRStatus _MD_WAKEUP_WAITER(PRThread *); 232 extern void _MD_YIELD(void); 233 234 #endif /* ! _PR_PTHREADS */ 235 236 extern void _MD_EarlyInit(void); 237 extern PRIntervalTime _PR_UNIX_GetInterval(void); 238 extern 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 (at) 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 (at) 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 */ 269 caddr_t mmap(caddr_t addr, size_t len, int prot, int flags, 270 int fildes, off_t off); 271 int munmap(caddr_t addr, size_t len); 272 int 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 */ 276 caddr_t my_mmap(caddr_t addr, size_t len, int prot, int flags, 277 int fildes, off_t off); 278 int my_munmap(caddr_t addr, size_t len); 279 280 281 /* string.h 282 */ 283 /* balazs.pataki (at) sztaki.hu: this is missing so implemenetd in nextstep.c ... 284 */ 285 char *strdup(const char *s1); 286 287 /* unistd.h 288 */ 289 /* balazs.pataki (at) 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 */ 293 int brk(void *endds); 294 void *sbrk(int incr); 295 296 #endif /* nspr_nextstep_defs_h___ */ 297
