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Diffstat (limited to 'mozilla/nsprpub/pr/include/md/_nextstep.h')
| -rw-r--r-- | mozilla/nsprpub/pr/include/md/_nextstep.h | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/include/md/_nextstep.h b/mozilla/nsprpub/pr/include/md/_nextstep.h new file mode 100644 index 0000000..e7e4c05 --- /dev/null +++ b/mozilla/nsprpub/pr/include/md/_nextstep.h @@ -0,0 +1,299 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is the Netscape Portable Runtime (NSPR). + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#ifndef nspr_nextstep_defs_h___ +#define nspr_nextstep_defs_h___ + +#include "prthread.h" + +#include <bsd/libc.h> +#include <bsd/syscall.h> + +/* syscall() is not declared in NEXTSTEP's syscall.h ... +*/ +extern int syscall(int number, ...); + +/* + * Internal configuration macros + */ + +#define PR_LINKER_ARCH "nextstep" +#define _PR_SI_SYSNAME "NEXTSTEP" +#if defined(__sparc__) +#define _PR_SI_ARCHITECTURE "sparc" +#elif defined(__m68k__) +#define _PR_SI_ARCHITECTURE "m68k" +#elif defined(__i386__) +#define _PR_SI_ARCHITECTURE "x86" +#else +error Unknown NEXTSTEP architecture +#endif +#define PR_DLL_SUFFIX ".so" + +#define _PR_VMBASE 0x30000000 +#define _PR_STACK_VMBASE 0x50000000 +#define _MD_DEFAULT_STACK_SIZE 65536L +#define _MD_MMAP_FLAGS MAP_PRIVATE + +#undef HAVE_STACK_GROWING_UP + +#define HAVE_WEAK_MALLOC_SYMBOLS + +#define HAVE_DLL +#define USE_MACH_DYLD +#define _PR_STAT_HAS_ONLY_ST_ATIME +#define _PR_NO_LARGE_FILES + +#define USE_SETJMP + +#ifndef _PR_PTHREADS + +#include <setjmp.h> + +#define PR_CONTEXT_TYPE jmp_buf + +#define CONTEXT(_th) ((_th)->md.context) + +/* balazs.pataki@sztaki.hu: +** __sparc__ is checked +** __m68k__ is checked +** __i386__ is a guess (one of the two defines should work) +*/ +#if defined(__sparc__) +#define _MD_GET_SP(_th) (_th)->md.context[2] +#elif defined(__m68k__) +#define _MD_GET_SP(_th) (_th)->md.context[2] +#elif defined(__i386__) +/* One of this two must be OK ... try using sc_onstack +*/ +#define _MD_GET_SP(_th) (((struct sigcontext *) (_th)->md.context)->sc_onstack) +//#define _MD_GET_SP(_th) (_th)->md.context[0].sc_esp +#else +error Unknown NEXTSTEP architecture +#endif + +#define PR_NUM_GCREGS _JBLEN + +/* +** Initialize a thread context to run "_main()" when started +*/ +#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ +{ \ + *status = PR_TRUE; \ + if (setjmp(CONTEXT(_thread))) { \ + _main(); \ + } \ + _MD_GET_SP(_thread) = (int) ((_sp) - 64); \ +} + +#define _MD_SWITCH_CONTEXT(_thread) \ + if (!setjmp(CONTEXT(_thread))) { \ + (_thread)->md.errcode = errno; \ + _PR_Schedule(); \ + } + +/* +** Restore a thread context, saved by _MD_SWITCH_CONTEXT +*/ +#define _MD_RESTORE_CONTEXT(_thread) \ +{ \ + errno = (_thread)->md.errcode; \ + _MD_SET_CURRENT_THREAD(_thread); \ + longjmp(CONTEXT(_thread), 1); \ +} + +/* Machine-dependent (MD) data structures */ + +struct _MDThread { + PR_CONTEXT_TYPE context; + int id; + int errcode; +}; + +struct _MDThreadStack { + PRInt8 notused; +}; + +struct _MDLock { + PRInt8 notused; +}; + +struct _MDSemaphore { + PRInt8 notused; +}; + +struct _MDCVar { + PRInt8 notused; +}; + +struct _MDSegment { + PRInt8 notused; +}; + +/* + * md-specific cpu structure field + */ +#define _PR_MD_MAX_OSFD FD_SETSIZE + +struct _MDCPU_Unix { + PRCList ioQ; + PRUint32 ioq_timeout; + PRInt32 ioq_max_osfd; + PRInt32 ioq_osfd_cnt; +#ifndef _PR_USE_POLL + fd_set fd_read_set, fd_write_set, fd_exception_set; + PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], + fd_exception_cnt[_PR_MD_MAX_OSFD]; +#else + struct pollfd *ioq_pollfds; + int ioq_pollfds_size; +#endif /* _PR_USE_POLL */ +}; + +#define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) +#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) +#define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) +#define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) +#define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) +#define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) +#define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) +#define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) +#define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) +#define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) +#define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) +#define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) +#define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) + +#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 + +struct _MDCPU { + struct _MDCPU_Unix md_unix; +}; + +#define _MD_INIT_LOCKS() +#define _MD_NEW_LOCK(lock) PR_SUCCESS +#define _MD_FREE_LOCK(lock) +#define _MD_LOCK(lock) +#define _MD_UNLOCK(lock) +#define _MD_INIT_IO() +#define _MD_IOQ_LOCK() +#define _MD_IOQ_UNLOCK() + +extern PRStatus _MD_InitializeThread(PRThread *thread); + +#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu) +#define _MD_INIT_THREAD _MD_InitializeThread +#define _MD_EXIT_THREAD(thread) +#define _MD_SUSPEND_THREAD(thread) _MD_suspend_thread +#define _MD_RESUME_THREAD(thread) _MD_resume_thread +#define _MD_CLEAN_THREAD(_thread) + +extern PRStatus _MD_CREATE_THREAD( + PRThread *thread, + void (*start) (void *), + PRThreadPriority priority, + PRThreadScope scope, + PRThreadState state, + PRUint32 stackSize); +extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); +extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); +extern PRStatus _MD_WAKEUP_WAITER(PRThread *); +extern void _MD_YIELD(void); + +#endif /* ! _PR_PTHREADS */ + +extern void _MD_EarlyInit(void); +extern PRIntervalTime _PR_UNIX_GetInterval(void); +extern PRIntervalTime _PR_UNIX_TicksPerSecond(void); + +#define _MD_EARLY_INIT _MD_EarlyInit +#define _MD_FINAL_INIT _PR_UnixInit +#define _MD_GET_INTERVAL _PR_UNIX_GetInterval +#define _MD_INTERVAL_PER_SEC _PR_UNIX_TicksPerSecond + +/* + * We wrapped the select() call. _MD_SELECT refers to the built-in, + * unwrapped version. + */ +#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv) + +/* For writev() */ +#include <sys/uio.h> + +/* signal.h */ +/* balazs.pataki@sztaki.hu: this is stolen from sunos4.h. The things is that +** NEXTSTEP doesn't support these flags for `struct sigaction's sa_flags, so +** I have to fake them ... +*/ +#define SA_RESTART 0 + +/* mmap */ +/* balazs.pataki@sztaki.hu: NEXTSTEP doesn't have mmap, at least not +** publically. We have sys/mman.h, but it doesn't declare mmap(), and +** PROT_NONE is also missing. syscall.h has entries for mmap, munmap, and +** mprotect so I wrap these in nextstep.c as mmap(), munmap() and mprotect() +** and pray for it to work. +** +*/ +caddr_t mmap(caddr_t addr, size_t len, int prot, int flags, + int fildes, off_t off); +int munmap(caddr_t addr, size_t len); +int mprotect(caddr_t addr, size_t len, int prot); + +/* my_mmap() is implemented in nextstep.c and is based on map_fd() of mach. +*/ +caddr_t my_mmap(caddr_t addr, size_t len, int prot, int flags, + int fildes, off_t off); +int my_munmap(caddr_t addr, size_t len); + + +/* string.h +*/ +/* balazs.pataki@sztaki.hu: this is missing so implemenetd in nextstep.c ... +*/ +char *strdup(const char *s1); + +/* unistd.h +*/ +/* balazs.pataki@sztaki.hu: these functions are hidden, though correctly +** implemented in NEXTSTEP. Here I give the declaration for them to be used +** by prmalloc.c, and I have a wrapped syscall() version of them in nextstep.c +*/ +int brk(void *endds); +void *sbrk(int incr); + +#endif /* nspr_nextstep_defs_h___ */ |