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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /*
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- #ifndef nspr_linux_defs_h___
- #define nspr_linux_defs_h___
-
- /*
- * Internal configuration macros
- */
-
- #define PR_LINKER_ARCH "linux"
- #define _PR_SI_SYSNAME "LINUX"
- #ifdef __powerpc__
- #define _PR_SI_ARCHITECTURE "ppc"
- #elif defined(__alpha)
- #define _PR_SI_ARCHITECTURE "alpha"
- #else
- #define _PR_SI_ARCHITECTURE "x86"
- #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
-
- /*
- * Elf linux supports dl* functions
- */
- #if defined(LINUX1_2) || defined(LINUX2_0)
- #define HAVE_DLL
- #define USE_DLFCN
- #else
- #undef HAVE_DLL
- #undef USE_DLFCN
- #endif
-
- #if !defined(MACLINUX) && !defined(NEED_TIME_R)
- #define NEED_TIME_R
- #endif
-
- #if defined(_PR_PTHREADS) && !(defined(__GLIBC__) && __GLIBC__ >= 2)
- #define _PR_NEED_FAKE_POLL
- #endif
-
- #define USE_SETJMP
-
- #ifdef _PR_PTHREADS
-
- extern void _MD_CleanupBeforeExit(void);
- #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
-
- #else /* ! _PR_PTHREADS */
-
- #include <setjmp.h>
-
- #define PR_CONTEXT_TYPE sigjmp_buf
-
- #define CONTEXT(_th) ((_th)->md.context)
-
- #ifdef __powerpc__
- /* PowerPC based MkLinux */
- #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0]
- /* aix = 64, macos = 70 */
- #define PR_NUM_GCREGS 64
-
- #elif defined(__alpha)
- /* Alpha based Linux */
-
- #if defined(__GLIBC__) && __GLIBC__ >= 2
- #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
- #else
- #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
- #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
-
- /* XXX not sure if this is correct, or maybe it should be 17? */
- #define PR_NUM_GCREGS 9
-
- #else
- /* Intel based Linux */
- #if defined(__GLIBC__) && __GLIBC__ >= 2
- #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
- #else
- #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
- #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
- #define PR_NUM_GCREGS 6
-
- #endif /*__powerpc__*/
-
- /*
- ** Initialize a thread context to run "_main()" when started
- */
- #ifdef __powerpc__
-
- #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
- { \
- *status = PR_TRUE; \
- if (sigsetjmp(CONTEXT(_thread), 1)) { \
- _main(); \
- } \
- _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \
- }
-
- #else
-
- #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
- { \
- *status = PR_TRUE; \
- if (sigsetjmp(CONTEXT(_thread), 1)) { \
- _main(); \
- } \
- _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
- }
-
- #endif /*__powerpc__*/
-
- #define _MD_SWITCH_CONTEXT(_thread) \
- if (!sigsetjmp(CONTEXT(_thread), 1)) { \
- (_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); \
- siglongjmp(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;
- };
-
- 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()
-
- #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)
-
- #endif /* ! _PR_PTHREADS */
-
- #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 __select
-
- #if defined(_PR_NEED_FAKE_POLL)
-
- /*
- * XXX: Linux doesn't have poll(), but our pthreads code calls poll().
- * As a temporary measure, I implemented a fake poll() using select().
- * Here are the struct and macro definitions copied from sys/poll.h
- * on Solaris 2.5.
- */
-
- struct pollfd {
- int fd;
- short events;
- short revents;
- };
-
- /* poll events */
-
- #define POLLIN 0x0001 /* fd is readable */
- #define POLLPRI 0x0002 /* high priority info at fd */
- #define POLLOUT 0x0004 /* fd is writeable (won't block) */
- #define POLLRDNORM 0x0040 /* normal data is readable */
- #define POLLWRNORM POLLOUT
- #define POLLRDBAND 0x0080 /* out-of-band data is readable */
- #define POLLWRBAND 0x0100 /* out-of-band data is writeable */
-
- #define POLLNORM POLLRDNORM
-
- #define POLLERR 0x0008 /* fd has error condition */
- #define POLLHUP 0x0010 /* fd has been hung up on */
- #define POLLNVAL 0x0020 /* invalid pollfd entry */
-
- extern int poll(struct pollfd *, unsigned long, int);
-
- #endif /* _PR_NEED_FAKE_POLL */
-
- #endif /* nspr_linux_defs_h___ */
-