The Tor Browser: nsprpub/pr/include/md/_linux.h@7e26c7da4463 (annotated)

nsprpub/pr/include/md/_linux.h@7e26c7da4463 (annotated)

nsprpub/pr/include/md/_linux.h

Wed, 31 Dec 2014 06:55:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:50 +0100
changeset 2: 7e26c7da4463
permissions: -rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /*
  * This file is used by not only Linux but also other glibc systems
  * such as GNU/Hurd and GNU/k*BSD.
  */
 #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__) && defined(__arch64__)
 #define _PR_SI_ARCHITECTURE "sparc64"
 #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(__aarch64__)
 #define _PR_SI_ARCHITECTURE "aarch64"
 #elif defined(__hppa__)
 #define _PR_SI_ARCHITECTURE "hppa"
 #elif defined(__s390x__)
 #define _PR_SI_ARCHITECTURE "s390x"
 #elif defined(__s390__)
 #define _PR_SI_ARCHITECTURE "s390"
 #elif defined(__sh__)
 #define _PR_SI_ARCHITECTURE "sh"
 #elif defined(__avr32__)
 #define _PR_SI_ARCHITECTURE "avr32"
 #elif defined(__m32r__)
 #define _PR_SI_ARCHITECTURE "m32r"
 #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
 #if defined(__aarch64__)
 #define _MD_MINIMUM_STACK_SIZE  0x20000
 #endif
 #undef	HAVE_STACK_GROWING_UP
 /*
  * Elf linux supports dl* functions
  */
 #define HAVE_DLL
 #define USE_DLFCN
 #if defined(ANDROID)
 #define NO_DLOPEN_NULL
 #endif
 #if defined(__FreeBSD_kernel__) || defined(__GNU__)
 #define _PR_HAVE_SOCKADDR_LEN
 #endif
 #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(__powerpc__) && !defined(__powerpc64__)
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 extern PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val);
 #define _MD_ATOMIC_INCREMENT          _PR_ppc_AtomicIncrement
 extern PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val);
 #define _MD_ATOMIC_DECREMENT          _PR_ppc_AtomicDecrement
 extern PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val);
 #define _MD_ATOMIC_ADD                _PR_ppc_AtomicAdd
 extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
 #define _MD_ATOMIC_SET                _PR_ppc_AtomicSet
 #endif
 #if defined(__powerpc64__)
 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
 /* Use GCC built-in functions */
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
 #endif
 #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
 #if defined(__arm__) || defined(__aarch64__)
 #if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
 /* Use GCC built-in functions */
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
 #elif defined(_PR_ARM_KUSER)
 #define _PR_HAVE_ATOMIC_OPS
 #define _MD_INIT_ATOMIC()
 /*
  * The kernel provides this helper function at a fixed address with a fixed
  * ABI signature, directly callable from user space.
  *
  * Definition:
  * Atomically store newval in *ptr if *ptr is equal to oldval.
  * Return zero if *ptr was changed or non-zero if no exchange happened.
  */
 typedef int (__kernel_cmpxchg_t)(int oldval, int newval, volatile int *ptr);
 #define __kernel_cmpxchg (*(__kernel_cmpxchg_t *)0xffff0fc0)
 #define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1)
 #define _MD_ATOMIC_DECREMENT(ptr) _MD_ATOMIC_ADD(ptr, -1)
 static inline PRInt32 _MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 n)
 {
     PRInt32 ov, nv;
     volatile PRInt32 *vp = ptr;
     do {
         ov = *vp;
         nv = ov + n;
     } while (__kernel_cmpxchg(ov, nv, vp));
     return nv;
 }
 static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *ptr, PRInt32 nv)
 {
     PRInt32 ov;
     volatile PRInt32 *vp = ptr;
     do {
         ov = *vp;
     } while (__kernel_cmpxchg(ov, nv, vp));
     return ov;
 }
 #endif
 #endif /* __arm__ */
 #define USE_SETJMP
 #if (defined(__GLIBC__) && __GLIBC__ >= 2) || defined(ANDROID)
 #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) \
     || defined(ANDROID)
 #define _PR_HAVE_OFF64_T
 #else
 #define _PR_NO_LARGE_FILES
 #endif
 #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \
     || defined(ANDROID)
 #define _PR_INET6
 #define _PR_HAVE_INET_NTOP
 #define _PR_HAVE_GETHOSTBYNAME2
 #define _PR_HAVE_GETADDRINFO
 #define _PR_INET6_PROBE
 #endif
 #ifndef ANDROID
 #define _PR_HAVE_SYSV_SEMAPHORES
 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
 #endif
 /* Android has gethostbyname_r but not gethostbyaddr_r or gethostbyname2_r. */
 #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 <setjmp.h>
 #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
 #ifdef __ARM_EABI__
 /* EABI */
 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8]
 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val))
 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7])
 #define _MD_SP_TYPE __ptr_t
 #else /* __ARM_EABI__ */
 /* old ABI */
 #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
 #endif /* __ARM_EABI__ */
 #else
 #error "ARM/Linux pre-glibc2 not supported yet"
 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
 #elif defined(__sh__)
 /* SH/Linux */
 #if defined(__GLIBC__) && __GLIBC__ >= 2
 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[7]
 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[6] = (val))
 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[6])
 #define _MD_SP_TYPE __ptr_t
 #else
 #error "SH/Linux pre-glibc2 not supported yet"
 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
 #elif defined(__m32r__)
 /* Linux/M32R */
 #if defined(__GLIBC__) && __GLIBC__ >= 2
 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__regs[JB_SP]
 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__regs[JB_FP] = (val))
 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__regs[JB_FP])
 #define _MD_SP_TYPE __ptr_t
 #else
 #error "Linux/M32R 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 <sys/time.h>  /* 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);
 #define _MD_EARLY_INIT                  _MD_EarlyInit
 #define _MD_FINAL_INIT                  _PR_UnixInit
 #define HAVE_CLOCK_MONOTONIC
 /*
  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
  * unwrapped version.
  */
 #define _MD_SELECT __select
 #ifdef _PR_POLL_AVAILABLE
 #include <sys/poll.h>
 extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds,
 	int timeout);
 #define _MD_POLL __syscall_poll
 #endif
 /* For writev() */
 #include <sys/uio.h>
 extern void _MD_linux_map_sendfile_error(int err);
 #endif /* nspr_linux_defs_h___ */

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nsprpub/pr/include/md/_linux.h@7e26c7da4463 (annotated)

nsprpub/pr/include/md/_linux.h