/* -*- 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_linux_defs_h___ #define nspr_linux_defs_h___ #include "prthread.h" /* * Internal configuration macros */ #define PR_LINKER_ARCH "linux" #define _PR_SI_SYSNAME "LINUX" #ifdef __powerpc64__ #define _PR_SI_ARCHITECTURE "ppc64" #elif defined(__powerpc__) #define _PR_SI_ARCHITECTURE "ppc" #elif defined(__alpha) #define _PR_SI_ARCHITECTURE "alpha" #elif defined(__ia64__) #define _PR_SI_ARCHITECTURE "ia64" #elif defined(__x86_64__) #define _PR_SI_ARCHITECTURE "x86-64" #elif defined(__mc68000__) #define _PR_SI_ARCHITECTURE "m68k" #elif defined(__sparc__) #define _PR_SI_ARCHITECTURE "sparc" #elif defined(__i386__) #define _PR_SI_ARCHITECTURE "x86" #elif defined(__mips__) #define _PR_SI_ARCHITECTURE "mips" #elif defined(__arm__) #define _PR_SI_ARCHITECTURE "arm" #elif defined(__hppa__) #define _PR_SI_ARCHITECTURE "hppa" #elif defined(__s390x__) #define _PR_SI_ARCHITECTURE "s390x" #elif defined(__s390__) #define _PR_SI_ARCHITECTURE "s390" #else #error "Unknown CPU 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 /* * Elf linux supports dl* functions */ #define HAVE_DLL #define USE_DLFCN #if defined(__i386__) #define _PR_HAVE_ATOMIC_OPS #define _MD_INIT_ATOMIC() extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val); #define _MD_ATOMIC_INCREMENT _PR_x86_AtomicIncrement extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val); #define _MD_ATOMIC_DECREMENT _PR_x86_AtomicDecrement extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); #define _MD_ATOMIC_ADD _PR_x86_AtomicAdd extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval); #define _MD_ATOMIC_SET _PR_x86_AtomicSet #endif #if defined(__ia64__) #define _PR_HAVE_ATOMIC_OPS #define _MD_INIT_ATOMIC() extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val); #define _MD_ATOMIC_INCREMENT _PR_ia64_AtomicIncrement extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val); #define _MD_ATOMIC_DECREMENT _PR_ia64_AtomicDecrement extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val); #define _MD_ATOMIC_ADD _PR_ia64_AtomicAdd extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval); #define _MD_ATOMIC_SET _PR_ia64_AtomicSet #endif #if defined(__x86_64__) #define _PR_HAVE_ATOMIC_OPS #define _MD_INIT_ATOMIC() extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val); #define _MD_ATOMIC_INCREMENT _PR_x86_64_AtomicIncrement extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val); #define _MD_ATOMIC_DECREMENT _PR_x86_64_AtomicDecrement extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val); #define _MD_ATOMIC_ADD _PR_x86_64_AtomicAdd extern PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval); #define _MD_ATOMIC_SET _PR_x86_64_AtomicSet #endif #if defined(__alpha) #define _PR_HAVE_ATOMIC_OPS #define _MD_INIT_ATOMIC() #define _MD_ATOMIC_ADD(ptr, i) ({ \ PRInt32 __atomic_tmp, __atomic_ret; \ __asm__ __volatile__( \ "1: ldl_l %[ret], %[val] \n" \ " addl %[ret], %[inc], %[tmp] \n" \ " addl %[ret], %[inc], %[ret] \n" \ " stl_c %[tmp], %[val] \n" \ " beq %[tmp], 2f \n" \ ".subsection 2 \n" \ "2: br 1b \n" \ ".previous" \ : [ret] "=&r" (__atomic_ret), \ [tmp] "=&r" (__atomic_tmp), \ [val] "=m" (*ptr) \ : [inc] "Ir" (i), "m" (*ptr)); \ __atomic_ret; \ }) #define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1) #define _MD_ATOMIC_DECREMENT(ptr) ({ \ PRInt32 __atomic_tmp, __atomic_ret; \ __asm__ __volatile__( \ "1: ldl_l %[ret], %[val] \n" \ " subl %[ret], 1, %[tmp] \n" \ " subl %[ret], 1, %[ret] \n" \ " stl_c %[tmp], %[val] \n" \ " beq %[tmp], 2f \n" \ ".subsection 2 \n" \ "2: br 1b \n" \ ".previous" \ : [ret] "=&r" (__atomic_ret), \ [tmp] "=&r" (__atomic_tmp), \ [val] "=m" (*ptr) \ : "m" (*ptr)); \ __atomic_ret; \ }) #define _MD_ATOMIC_SET(ptr, n) ({ \ PRInt32 __atomic_tmp, __atomic_ret; \ __asm__ __volatile__( \ "1: ldl_l %[ret], %[val] \n" \ " mov %[newval], %[tmp] \n" \ " stl_c %[tmp], %[val] \n" \ " beq %[tmp], 2f \n" \ ".subsection 2 \n" \ "2: br 1b \n" \ ".previous" \ : [ret] "=&r" (__atomic_ret), \ [tmp] "=&r"(__atomic_tmp), \ [val] "=m" (*ptr) \ : [newval] "Ir" (n), "m" (*ptr)); \ __atomic_ret; \ }) #endif #define USE_SETJMP #if defined(__GLIBC__) && __GLIBC__ >= 2 #define _PR_POLL_AVAILABLE #endif #undef _PR_USE_POLL #define _PR_STAT_HAS_ONLY_ST_ATIME #if defined(__alpha) || defined(__ia64__) #define _PR_HAVE_LARGE_OFF_T #elif (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) #define _PR_HAVE_OFF64_T #else #define _PR_NO_LARGE_FILES #endif #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) #define _PR_INET6 #define _PR_HAVE_INET_NTOP #define _PR_HAVE_GETHOSTBYNAME2 #define _PR_HAVE_GETADDRINFO #define _PR_INET6_PROBE #endif #define _PR_HAVE_SYSV_SEMAPHORES #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY #if (__GLIBC__ >= 2) && defined(_PR_PTHREADS) #define _PR_HAVE_GETHOST_R #define _PR_HAVE_GETHOST_R_INT #endif #ifdef _PR_PTHREADS extern void _MD_CleanupBeforeExit(void); #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit #else /* ! _PR_PTHREADS */ #include #define PR_CONTEXT_TYPE sigjmp_buf #define CONTEXT(_th) ((_th)->md.context) #ifdef __powerpc__ /* * PowerPC based MkLinux * * On the PowerPC, the new style jmp_buf isn't used until glibc * 2.1. */ #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1] #else #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0] #endif /* glibc 2.1 or later */ #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 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] #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 0) #define _MD_SP_TYPE long int #else #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 0) #define _MD_SP_TYPE __ptr_t #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ /* XXX not sure if this is correct, or maybe it should be 17? */ #define PR_NUM_GCREGS 9 #elif defined(__ia64__) #define _MD_GET_SP(_t) ((long *)((_t)->md.context[0].__jmpbuf)[0]) #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 0) #define _MD_SP_TYPE long int #define PR_NUM_GCREGS _JBLEN #elif defined(__mc68000__) /* m68k based Linux */ /* * On the m68k, glibc still uses the old style sigjmp_buf, even * in glibc 2.0.7. */ #if defined(__GLIBC__) && __GLIBC__ >= 2 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 0) #define _MD_SP_TYPE int #else #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 0) #define _MD_SP_TYPE __ptr_t #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ /* XXX not sure if this is correct, or maybe it should be 17? */ #define PR_NUM_GCREGS 9 #elif defined(__sparc__) /* Sparc */ #if defined(__GLIBC__) && __GLIBC__ >= 2 /* * You need glibc2-2.0.7-25 or later. The libraries that came with * Red Hat 5.1 are not new enough, but they are in 5.2. */ #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP]) #define _MD_SP_TYPE int #else #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp #define _MD_SET_FP(_t, val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) ((void *) 0) #define _MD_SP_TYPE __ptr_t #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ #elif defined(__i386__) /* Intel based Linux */ #if defined(__GLIBC__) && __GLIBC__ >= 2 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP]) #define _MD_SP_TYPE int #else #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp) #define _MD_SP_TYPE __ptr_t #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ #define PR_NUM_GCREGS 6 #elif defined(__mips__) /* Linux/MIPS */ #if defined(__GLIBC__) && __GLIBC__ >= 2 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val)) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp) #define _MD_SP_TYPE __ptr_t #else #error "Linux/MIPS pre-glibc2 not supported yet" #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ #elif defined(__arm__) /* ARM/Linux */ #if defined(__GLIBC__) && __GLIBC__ >= 2 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20] #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val)) #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19]) #define _MD_SP_TYPE __ptr_t #else #error "ARM/Linux pre-glibc2 not supported yet" #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ #else #error "Unknown CPU architecture" #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); \ _thread->md.sp = _MD_GET_SP_PTR(_thread); \ _thread->md.fp = _MD_GET_FP_PTR(_thread); \ _MD_SET_FP(_thread, 0); \ } #elif defined(__mips__) #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ { \ *status = PR_TRUE; \ (void) sigsetjmp(CONTEXT(_thread), 1); \ _thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main; \ _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ _thread->md.sp = _MD_GET_SP_PTR(_thread); \ _thread->md.fp = _MD_GET_FP_PTR(_thread); \ _MD_SET_FP(_thread, 0); \ } #else #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ { \ *status = PR_TRUE; \ if (sigsetjmp(CONTEXT(_thread), 1)) { \ _main(); \ } \ _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ _thread->md.sp = _MD_GET_SP_PTR(_thread); \ _thread->md.fp = _MD_GET_FP_PTR(_thread); \ _MD_SET_FP(_thread, 0); \ } #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; void *sp; void *fp; 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 */ #include /* for FD_SETSIZE */ #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 __select #ifdef _PR_POLL_AVAILABLE #include extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds, int timeout); #define _MD_POLL __syscall_poll #endif /* For writev() */ #include extern void _MD_linux_map_sendfile_error(int err); #endif /* nspr_linux_defs_h___ */