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444 lines
13 KiB
C
444 lines
13 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nspr_linux_defs_h___
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#define nspr_linux_defs_h___
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#include "prthread.h"
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/*
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* Internal configuration macros
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*/
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#define PR_LINKER_ARCH "linux"
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#define _PR_SI_SYSNAME "LINUX"
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#ifdef __powerpc__
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#define _PR_SI_ARCHITECTURE "ppc"
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#elif defined(__alpha)
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#define _PR_SI_ARCHITECTURE "alpha"
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#elif defined(__ia64__)
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#define _PR_SI_ARCHITECTURE "ia64"
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#elif defined(__mc68000__)
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#define _PR_SI_ARCHITECTURE "m68k"
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#elif defined(__sparc__)
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#define _PR_SI_ARCHITECTURE "sparc"
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#elif defined(__i386__)
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#define _PR_SI_ARCHITECTURE "x86"
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#elif defined(__mips__)
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#define _PR_SI_ARCHITECTURE "mips"
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#elif defined(__arm__)
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#define _PR_SI_ARCHITECTURE "arm"
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#else
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#error "Unknown CPU 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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/*
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* Elf linux supports dl* functions
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*/
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#define HAVE_DLL
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#define USE_DLFCN
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#if defined(__i386__)
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#define _PR_HAVE_ATOMIC_OPS
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#define _MD_INIT_ATOMIC()
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extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val);
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#define _MD_ATOMIC_INCREMENT _PR_x86_AtomicIncrement
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extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val);
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#define _MD_ATOMIC_DECREMENT _PR_x86_AtomicDecrement
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extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
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#define _MD_ATOMIC_ADD _PR_x86_AtomicAdd
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extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
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#define _MD_ATOMIC_SET _PR_x86_AtomicSet
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#endif
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#define USE_SETJMP
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _PR_POLL_AVAILABLE
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#endif
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#undef _PR_USE_POLL
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#define _PR_STAT_HAS_ONLY_ST_ATIME
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#if defined(__alpha)
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#define _PR_HAVE_LARGE_OFF_T
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#else
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#define _PR_NO_LARGE_FILES
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#endif
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#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)
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#define _PR_INET6
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#define _PR_HAVE_GETHOSTBYNAME2
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#define _PR_INET6_PROBE
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#endif
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#define _PR_HAVE_SYSV_SEMAPHORES
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#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
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#if (__GLIBC__ >= 2) && defined(_PR_PTHREADS)
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#define _PR_HAVE_GETHOST_R
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#define _PR_HAVE_GETHOST_R_INT
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#endif
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#ifdef _PR_PTHREADS
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extern void _MD_CleanupBeforeExit(void);
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#define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
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#else /* ! _PR_PTHREADS */
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#include <setjmp.h>
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#define PR_CONTEXT_TYPE sigjmp_buf
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#define CONTEXT(_th) ((_th)->md.context)
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#ifdef __powerpc__
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/*
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* PowerPC based MkLinux
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*
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* On the PowerPC, the new style jmp_buf isn't used until glibc
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* 2.1.
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*/
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#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1]
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#else
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0]
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#endif /* glibc 2.1 or later */
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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/* aix = 64, macos = 70 */
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#define PR_NUM_GCREGS 64
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#elif defined(__alpha)
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/* Alpha based Linux */
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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#define _MD_SP_TYPE long int
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#else
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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#define _MD_SP_TYPE __ptr_t
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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/* XXX not sure if this is correct, or maybe it should be 17? */
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#define PR_NUM_GCREGS 9
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#elif defined(__ia64__)
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/* ia64 based Linux */
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#define _MD_GET_SP(_t)
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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#define _MD_SP_TYPE long int
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#undef PR_NUM_GCREGS
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#elif defined(__mc68000__)
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/* m68k based Linux */
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/*
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* On the m68k, glibc still uses the old style sigjmp_buf, even
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* in glibc 2.0.7.
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*/
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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#define _MD_SP_TYPE int
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#else
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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#define _MD_SP_TYPE __ptr_t
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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/* XXX not sure if this is correct, or maybe it should be 17? */
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#define PR_NUM_GCREGS 9
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#elif defined(__sparc__)
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/* Sparc */
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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/*
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* You need glibc2-2.0.7-25 or later. The libraries that came with
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* Red Hat 5.1 are not new enough, but they are in 5.2.
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*/
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
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#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP])
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#define _MD_SP_TYPE int
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#else
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp
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#define _MD_SET_FP(_t, val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) ((void *) 0)
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#define _MD_SP_TYPE __ptr_t
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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#elif defined(__i386__)
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/* Intel based Linux */
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
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#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP])
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#define _MD_SP_TYPE int
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#else
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
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#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val)
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp)
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#define _MD_SP_TYPE __ptr_t
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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#define PR_NUM_GCREGS 6
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#elif defined(__mips__)
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/* Linux/MIPS */
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
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#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val))
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp)
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#define _MD_SP_TYPE __ptr_t
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#else
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#error "Linux/MIPS pre-glibc2 not supported yet"
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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#elif defined(__arm__)
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/* ARM/Linux */
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20]
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#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val))
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#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
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#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19])
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#define _MD_SP_TYPE __ptr_t
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#else
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#error "ARM/Linux pre-glibc2 not supported yet"
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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#else
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#error "Unknown CPU architecture"
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#endif /*__powerpc__*/
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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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#ifdef __powerpc__
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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 (sigsetjmp(CONTEXT(_thread), 1)) { \
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_main(); \
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} \
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_MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \
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_thread->md.sp = _MD_GET_SP_PTR(_thread); \
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_thread->md.fp = _MD_GET_FP_PTR(_thread); \
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_MD_SET_FP(_thread, 0); \
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}
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#elif defined(__mips__)
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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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(void) sigsetjmp(CONTEXT(_thread), 1); \
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_thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main; \
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_MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \
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_thread->md.sp = _MD_GET_SP_PTR(_thread); \
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_thread->md.fp = _MD_GET_FP_PTR(_thread); \
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_MD_SET_FP(_thread, 0); \
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}
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#else
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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 (sigsetjmp(CONTEXT(_thread), 1)) { \
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_main(); \
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} \
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_MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \
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_thread->md.sp = _MD_GET_SP_PTR(_thread); \
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_thread->md.fp = _MD_GET_FP_PTR(_thread); \
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_MD_SET_FP(_thread, 0); \
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}
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#endif /*__powerpc__*/
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#define _MD_SWITCH_CONTEXT(_thread) \
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if (!sigsetjmp(CONTEXT(_thread), 1)) { \
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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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siglongjmp(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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void *sp;
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void *fp;
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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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#include <sys/time.h> /* for FD_SETSIZE */
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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 __select
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#ifdef _PR_POLL_AVAILABLE
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#include <sys/poll.h>
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extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds,
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int timeout);
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#define _MD_POLL __syscall_poll
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#endif
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/* For writev() */
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#include <sys/uio.h>
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#endif /* nspr_linux_defs_h___ */
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