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