michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  * This file is used by not only Linux but also other glibc systems
michael@0:  * such as GNU/Hurd and GNU/k*BSD.
michael@0:  */
michael@0: 
michael@0: #ifndef nspr_linux_defs_h___
michael@0: #define nspr_linux_defs_h___
michael@0: 
michael@0: #include "prthread.h"
michael@0: 
michael@0: /*
michael@0:  * Internal configuration macros
michael@0:  */
michael@0: 
michael@0: #define PR_LINKER_ARCH	"linux"
michael@0: #define _PR_SI_SYSNAME  "LINUX"
michael@0: #ifdef __powerpc64__
michael@0: #define _PR_SI_ARCHITECTURE "ppc64"
michael@0: #elif defined(__powerpc__)
michael@0: #define _PR_SI_ARCHITECTURE "ppc"
michael@0: #elif defined(__alpha)
michael@0: #define _PR_SI_ARCHITECTURE "alpha"
michael@0: #elif defined(__ia64__)
michael@0: #define _PR_SI_ARCHITECTURE "ia64"
michael@0: #elif defined(__x86_64__)
michael@0: #define _PR_SI_ARCHITECTURE "x86-64"
michael@0: #elif defined(__mc68000__)
michael@0: #define _PR_SI_ARCHITECTURE "m68k"
michael@0: #elif defined(__sparc__) && defined(__arch64__)
michael@0: #define _PR_SI_ARCHITECTURE "sparc64"
michael@0: #elif defined(__sparc__)
michael@0: #define _PR_SI_ARCHITECTURE "sparc"
michael@0: #elif defined(__i386__)
michael@0: #define _PR_SI_ARCHITECTURE "x86"
michael@0: #elif defined(__mips__)
michael@0: #define _PR_SI_ARCHITECTURE "mips"
michael@0: #elif defined(__arm__)
michael@0: #define _PR_SI_ARCHITECTURE "arm"
michael@0: #elif defined(__aarch64__)
michael@0: #define _PR_SI_ARCHITECTURE "aarch64"
michael@0: #elif defined(__hppa__)
michael@0: #define _PR_SI_ARCHITECTURE "hppa"
michael@0: #elif defined(__s390x__)
michael@0: #define _PR_SI_ARCHITECTURE "s390x"
michael@0: #elif defined(__s390__)
michael@0: #define _PR_SI_ARCHITECTURE "s390"
michael@0: #elif defined(__sh__)
michael@0: #define _PR_SI_ARCHITECTURE "sh"
michael@0: #elif defined(__avr32__)
michael@0: #define _PR_SI_ARCHITECTURE "avr32"
michael@0: #elif defined(__m32r__)
michael@0: #define _PR_SI_ARCHITECTURE "m32r"
michael@0: #else
michael@0: #error "Unknown CPU architecture"
michael@0: #endif
michael@0: #define PR_DLL_SUFFIX		".so"
michael@0: 
michael@0: #define _PR_VMBASE              0x30000000
michael@0: #define _PR_STACK_VMBASE	0x50000000
michael@0: #define _MD_DEFAULT_STACK_SIZE	65536L
michael@0: #define _MD_MMAP_FLAGS          MAP_PRIVATE
michael@0: 
michael@0: #if defined(__aarch64__)
michael@0: #define _MD_MINIMUM_STACK_SIZE  0x20000
michael@0: #endif
michael@0: 
michael@0: #undef	HAVE_STACK_GROWING_UP
michael@0: 
michael@0: /*
michael@0:  * Elf linux supports dl* functions
michael@0:  */
michael@0: #define HAVE_DLL
michael@0: #define USE_DLFCN
michael@0: #if defined(ANDROID)
michael@0: #define NO_DLOPEN_NULL
michael@0: #endif
michael@0: 
michael@0: #if defined(__FreeBSD_kernel__) || defined(__GNU__)
michael@0: #define _PR_HAVE_SOCKADDR_LEN
michael@0: #endif
michael@0: 
michael@0: #if defined(__i386__)
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_INCREMENT          _PR_x86_AtomicIncrement
michael@0: extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_DECREMENT          _PR_x86_AtomicDecrement
michael@0: extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
michael@0: #define _MD_ATOMIC_ADD                _PR_x86_AtomicAdd
michael@0: extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
michael@0: #define _MD_ATOMIC_SET                _PR_x86_AtomicSet
michael@0: #endif
michael@0: 
michael@0: #if defined(__ia64__)
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_INCREMENT          _PR_ia64_AtomicIncrement
michael@0: extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_DECREMENT          _PR_ia64_AtomicDecrement
michael@0: extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
michael@0: #define _MD_ATOMIC_ADD                _PR_ia64_AtomicAdd
michael@0: extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval);
michael@0: #define _MD_ATOMIC_SET                _PR_ia64_AtomicSet
michael@0: #endif
michael@0: 
michael@0: #if defined(__x86_64__)
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_INCREMENT          _PR_x86_64_AtomicIncrement
michael@0: extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_DECREMENT          _PR_x86_64_AtomicDecrement
michael@0: extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
michael@0: #define _MD_ATOMIC_ADD                _PR_x86_64_AtomicAdd
michael@0: extern PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval);
michael@0: #define _MD_ATOMIC_SET                _PR_x86_64_AtomicSet
michael@0: #endif
michael@0: 
michael@0: #if defined(__powerpc__) && !defined(__powerpc64__)
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: extern PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_INCREMENT          _PR_ppc_AtomicIncrement
michael@0: extern PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val);
michael@0: #define _MD_ATOMIC_DECREMENT          _PR_ppc_AtomicDecrement
michael@0: extern PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val);
michael@0: #define _MD_ATOMIC_ADD                _PR_ppc_AtomicAdd
michael@0: extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
michael@0: #define _MD_ATOMIC_SET                _PR_ppc_AtomicSet
michael@0: #endif
michael@0: 
michael@0: #if defined(__powerpc64__)
michael@0: #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
michael@0: /* Use GCC built-in functions */
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
michael@0: #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
michael@0: #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
michael@0: #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
michael@0: #endif
michael@0: #endif
michael@0: 
michael@0: #if defined(__alpha)
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: #define _MD_ATOMIC_ADD(ptr, i) ({               \
michael@0:     PRInt32 __atomic_tmp, __atomic_ret;   \
michael@0:     __asm__ __volatile__(                       \
michael@0:     "1: ldl_l   %[ret], %[val]          \n"     \
michael@0:     "   addl    %[ret], %[inc], %[tmp]  \n"     \
michael@0:     "   addl    %[ret], %[inc], %[ret]  \n"     \
michael@0:     "   stl_c   %[tmp], %[val]          \n"     \
michael@0:     "   beq     %[tmp], 2f              \n"     \
michael@0:     ".subsection 2                      \n"     \
michael@0:     "2: br      1b                      \n"     \
michael@0:     ".previous"                                 \
michael@0:     : [ret] "=&r" (__atomic_ret),               \
michael@0:       [tmp] "=&r" (__atomic_tmp),               \
michael@0:       [val] "=m" (*ptr)                         \
michael@0:     : [inc] "Ir" (i), "m" (*ptr));              \
michael@0:     __atomic_ret;                               \
michael@0: })
michael@0: #define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1)
michael@0: #define _MD_ATOMIC_DECREMENT(ptr) ({            \
michael@0:     PRInt32 __atomic_tmp, __atomic_ret;   \
michael@0:     __asm__ __volatile__(                       \
michael@0:     "1: ldl_l   %[ret], %[val]          \n"     \
michael@0:     "   subl    %[ret], 1, %[tmp]       \n"     \
michael@0:     "   subl    %[ret], 1, %[ret]       \n"     \
michael@0:     "   stl_c   %[tmp], %[val]          \n"     \
michael@0:     "   beq     %[tmp], 2f              \n"     \
michael@0:     ".subsection 2                      \n"     \
michael@0:     "2: br      1b                      \n"     \
michael@0:     ".previous"                                 \
michael@0:     : [ret] "=&r" (__atomic_ret),               \
michael@0:       [tmp] "=&r" (__atomic_tmp),               \
michael@0:       [val] "=m" (*ptr)                         \
michael@0:     : "m" (*ptr));                              \
michael@0:     __atomic_ret;                               \
michael@0: })
michael@0: #define _MD_ATOMIC_SET(ptr, n) ({               \
michael@0:     PRInt32 __atomic_tmp, __atomic_ret;   \
michael@0:     __asm__ __volatile__(                       \
michael@0:     "1: ldl_l   %[ret], %[val]          \n"     \
michael@0:     "   mov     %[newval], %[tmp]       \n"     \
michael@0:     "   stl_c   %[tmp], %[val]          \n"     \
michael@0:     "   beq     %[tmp], 2f              \n"     \
michael@0:     ".subsection 2                      \n"     \
michael@0:     "2: br      1b                      \n"     \
michael@0:     ".previous"                                 \
michael@0:     : [ret] "=&r" (__atomic_ret),               \
michael@0:       [tmp] "=&r"(__atomic_tmp),                \
michael@0:       [val] "=m" (*ptr)                         \
michael@0:     : [newval] "Ir" (n), "m" (*ptr));           \
michael@0:     __atomic_ret;                               \
michael@0: })
michael@0: #endif
michael@0: 
michael@0: #if defined(__arm__) || defined(__aarch64__)
michael@0: #if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
michael@0: /* Use GCC built-in functions */
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: 
michael@0: #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
michael@0: #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
michael@0: #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
michael@0: #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
michael@0: 
michael@0: #elif defined(_PR_ARM_KUSER)
michael@0: #define _PR_HAVE_ATOMIC_OPS
michael@0: #define _MD_INIT_ATOMIC()
michael@0: 
michael@0: /*
michael@0:  * The kernel provides this helper function at a fixed address with a fixed
michael@0:  * ABI signature, directly callable from user space.
michael@0:  *
michael@0:  * Definition:
michael@0:  * Atomically store newval in *ptr if *ptr is equal to oldval.
michael@0:  * Return zero if *ptr was changed or non-zero if no exchange happened.
michael@0:  */
michael@0: typedef int (__kernel_cmpxchg_t)(int oldval, int newval, volatile int *ptr);
michael@0: #define __kernel_cmpxchg (*(__kernel_cmpxchg_t *)0xffff0fc0)
michael@0: 
michael@0: #define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1)
michael@0: #define _MD_ATOMIC_DECREMENT(ptr) _MD_ATOMIC_ADD(ptr, -1)
michael@0: 
michael@0: static inline PRInt32 _MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 n)
michael@0: {
michael@0:     PRInt32 ov, nv;
michael@0:     volatile PRInt32 *vp = ptr;
michael@0: 
michael@0:     do {
michael@0:         ov = *vp;
michael@0:         nv = ov + n;
michael@0:     } while (__kernel_cmpxchg(ov, nv, vp));
michael@0: 
michael@0:     return nv;
michael@0: }
michael@0: 
michael@0: static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *ptr, PRInt32 nv)
michael@0: {
michael@0:     PRInt32 ov;
michael@0:     volatile PRInt32 *vp = ptr;
michael@0: 
michael@0:     do {
michael@0:         ov = *vp;
michael@0:     } while (__kernel_cmpxchg(ov, nv, vp));
michael@0: 
michael@0:     return ov;
michael@0: }
michael@0: #endif
michael@0: #endif /* __arm__ */
michael@0: 
michael@0: #define USE_SETJMP
michael@0: #if (defined(__GLIBC__) && __GLIBC__ >= 2) || defined(ANDROID)
michael@0: #define _PR_POLL_AVAILABLE
michael@0: #endif
michael@0: #undef _PR_USE_POLL
michael@0: #define _PR_STAT_HAS_ONLY_ST_ATIME
michael@0: #if defined(__alpha) || defined(__ia64__)
michael@0: #define _PR_HAVE_LARGE_OFF_T
michael@0: #elif (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \
michael@0:     || defined(ANDROID)
michael@0: #define _PR_HAVE_OFF64_T
michael@0: #else
michael@0: #define _PR_NO_LARGE_FILES
michael@0: #endif
michael@0: #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \
michael@0:     || defined(ANDROID)
michael@0: #define _PR_INET6
michael@0: #define _PR_HAVE_INET_NTOP
michael@0: #define _PR_HAVE_GETHOSTBYNAME2
michael@0: #define _PR_HAVE_GETADDRINFO
michael@0: #define _PR_INET6_PROBE
michael@0: #endif
michael@0: #ifndef ANDROID
michael@0: #define _PR_HAVE_SYSV_SEMAPHORES
michael@0: #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
michael@0: #endif
michael@0: /* Android has gethostbyname_r but not gethostbyaddr_r or gethostbyname2_r. */
michael@0: #if (__GLIBC__ >= 2) && defined(_PR_PTHREADS)
michael@0: #define _PR_HAVE_GETHOST_R
michael@0: #define _PR_HAVE_GETHOST_R_INT
michael@0: #endif
michael@0: 
michael@0: #ifdef _PR_PTHREADS
michael@0: 
michael@0: extern void _MD_CleanupBeforeExit(void);
michael@0: #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
michael@0: 
michael@0: #else  /* ! _PR_PTHREADS */
michael@0: 
michael@0: #include <setjmp.h>
michael@0: 
michael@0: #define PR_CONTEXT_TYPE	sigjmp_buf
michael@0: 
michael@0: #define CONTEXT(_th) ((_th)->md.context)
michael@0: 
michael@0: #ifdef __powerpc__
michael@0: /*
michael@0:  * PowerPC based MkLinux
michael@0:  *
michael@0:  * On the PowerPC, the new style jmp_buf isn't used until glibc
michael@0:  * 2.1.
michael@0:  */
michael@0: #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1]
michael@0: #else
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0]
michael@0: #endif /* glibc 2.1 or later */
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) ((void *) 0)
michael@0: /* aix = 64, macos = 70 */
michael@0: #define PR_NUM_GCREGS  64
michael@0: 
michael@0: #elif defined(__alpha)
michael@0: /* Alpha based Linux */
michael@0: 
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) ((void *) 0)
michael@0: #define _MD_SP_TYPE long int
michael@0: #else
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) ((void *) 0)
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: /* XXX not sure if this is correct, or maybe it should be 17? */
michael@0: #define PR_NUM_GCREGS 9
michael@0: 
michael@0: #elif defined(__ia64__)
michael@0: 
michael@0: #define _MD_GET_SP(_t)      ((long *)((_t)->md.context[0].__jmpbuf)[0])
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t)  &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t)  ((void *) 0)
michael@0: #define _MD_SP_TYPE         long int
michael@0: 
michael@0: #define PR_NUM_GCREGS       _JBLEN
michael@0: 
michael@0: #elif defined(__mc68000__)
michael@0: /* m68k based Linux */
michael@0: 
michael@0: /*
michael@0:  * On the m68k, glibc still uses the old style sigjmp_buf, even
michael@0:  * in glibc 2.0.7.
michael@0:  */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) ((void *) 0)
michael@0: #define _MD_SP_TYPE int
michael@0: #else
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) ((void *) 0)
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: /* XXX not sure if this is correct, or maybe it should be 17? */
michael@0: #define PR_NUM_GCREGS 9
michael@0: 
michael@0: #elif defined(__sparc__)
michael@0: /* Sparc */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: /*
michael@0:  * You need glibc2-2.0.7-25 or later. The libraries that came with
michael@0:  * Red Hat 5.1 are not new enough, but they are in 5.2.
michael@0:  */
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP])
michael@0: #define _MD_SP_TYPE int
michael@0: #else
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp
michael@0: #define _MD_SET_FP(_t, val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) ((void *) 0)
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: #elif defined(__i386__)
michael@0: /* Intel based Linux */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP])
michael@0: #define _MD_SP_TYPE int
michael@0: #else
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val)
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp)
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: #define PR_NUM_GCREGS   6
michael@0: 
michael@0: #elif defined(__mips__)
michael@0: /* Linux/MIPS */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val))
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp)
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #else
michael@0: #error "Linux/MIPS pre-glibc2 not supported yet"
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: #elif defined(__arm__)
michael@0: /* ARM/Linux */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #ifdef __ARM_EABI__
michael@0: /* EABI */
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8]
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val))
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7])
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #else /* __ARM_EABI__ */
michael@0: /* old ABI */
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20]
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val))
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19])
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #endif /* __ARM_EABI__ */
michael@0: #else
michael@0: #error "ARM/Linux pre-glibc2 not supported yet"
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: #elif defined(__sh__)
michael@0: /* SH/Linux */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[7]
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[6] = (val))
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[6])
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #else
michael@0: #error "SH/Linux pre-glibc2 not supported yet"
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: #elif defined(__m32r__)
michael@0: /* Linux/M32R */
michael@0: #if defined(__GLIBC__) && __GLIBC__ >= 2
michael@0: #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__regs[JB_SP]
michael@0: #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__regs[JB_FP] = (val))
michael@0: #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
michael@0: #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__regs[JB_FP])
michael@0: #define _MD_SP_TYPE __ptr_t
michael@0: #else
michael@0: #error "Linux/M32R pre-glibc2 not supported yet"
michael@0: #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
michael@0: 
michael@0: #else
michael@0: 
michael@0: #error "Unknown CPU architecture"
michael@0: 
michael@0: #endif /*__powerpc__*/
michael@0: 
michael@0: /*
michael@0: ** Initialize a thread context to run "_main()" when started
michael@0: */
michael@0: #ifdef __powerpc__
michael@0: 
michael@0: #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
michael@0: {  \
michael@0:     *status = PR_TRUE;  \
michael@0:     if (sigsetjmp(CONTEXT(_thread), 1)) {  \
michael@0:         _main();  \
michael@0:     }  \
michael@0:     _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \
michael@0:     _thread->md.sp = _MD_GET_SP_PTR(_thread); \
michael@0:     _thread->md.fp = _MD_GET_FP_PTR(_thread); \
michael@0:     _MD_SET_FP(_thread, 0); \
michael@0: }
michael@0: 
michael@0: #elif defined(__mips__)
michael@0: 
michael@0: #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
michael@0: {  \
michael@0:     *status = PR_TRUE;  \
michael@0:     (void) sigsetjmp(CONTEXT(_thread), 1);  \
michael@0:     _thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main;  \
michael@0:     _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \
michael@0:     _thread->md.sp = _MD_GET_SP_PTR(_thread); \
michael@0:     _thread->md.fp = _MD_GET_FP_PTR(_thread); \
michael@0:     _MD_SET_FP(_thread, 0); \
michael@0: }
michael@0: 
michael@0: #else
michael@0: 
michael@0: #define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
michael@0: {  \
michael@0:     *status = PR_TRUE;  \
michael@0:     if (sigsetjmp(CONTEXT(_thread), 1)) {  \
michael@0:         _main();  \
michael@0:     }  \
michael@0:     _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \
michael@0:     _thread->md.sp = _MD_GET_SP_PTR(_thread); \
michael@0:     _thread->md.fp = _MD_GET_FP_PTR(_thread); \
michael@0:     _MD_SET_FP(_thread, 0); \
michael@0: }
michael@0: 
michael@0: #endif /*__powerpc__*/
michael@0: 
michael@0: #define _MD_SWITCH_CONTEXT(_thread)  \
michael@0:     if (!sigsetjmp(CONTEXT(_thread), 1)) {  \
michael@0: 	(_thread)->md.errcode = errno;  \
michael@0: 	_PR_Schedule();  \
michael@0:     }
michael@0: 
michael@0: /*
michael@0: ** Restore a thread context, saved by _MD_SWITCH_CONTEXT
michael@0: */
michael@0: #define _MD_RESTORE_CONTEXT(_thread) \
michael@0: {   \
michael@0:     errno = (_thread)->md.errcode;  \
michael@0:     _MD_SET_CURRENT_THREAD(_thread);  \
michael@0:     siglongjmp(CONTEXT(_thread), 1);  \
michael@0: }
michael@0: 
michael@0: /* Machine-dependent (MD) data structures */
michael@0: 
michael@0: struct _MDThread {
michael@0:     PR_CONTEXT_TYPE context;
michael@0:     void *sp;
michael@0:     void *fp;
michael@0:     int id;
michael@0:     int errcode;
michael@0: };
michael@0: 
michael@0: struct _MDThreadStack {
michael@0:     PRInt8 notused;
michael@0: };
michael@0: 
michael@0: struct _MDLock {
michael@0:     PRInt8 notused;
michael@0: };
michael@0: 
michael@0: struct _MDSemaphore {
michael@0:     PRInt8 notused;
michael@0: };
michael@0: 
michael@0: struct _MDCVar {
michael@0:     PRInt8 notused;
michael@0: };
michael@0: 
michael@0: struct _MDSegment {
michael@0:     PRInt8 notused;
michael@0: };
michael@0: 
michael@0: /*
michael@0:  * md-specific cpu structure field
michael@0:  */
michael@0: #include <sys/time.h>  /* for FD_SETSIZE */
michael@0: #define _PR_MD_MAX_OSFD FD_SETSIZE
michael@0: 
michael@0: struct _MDCPU_Unix {
michael@0:     PRCList ioQ;
michael@0:     PRUint32 ioq_timeout;
michael@0:     PRInt32 ioq_max_osfd;
michael@0:     PRInt32 ioq_osfd_cnt;
michael@0: #ifndef _PR_USE_POLL
michael@0:     fd_set fd_read_set, fd_write_set, fd_exception_set;
michael@0:     PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
michael@0:             fd_exception_cnt[_PR_MD_MAX_OSFD];
michael@0: #else
michael@0:     struct pollfd *ioq_pollfds;
michael@0:     int ioq_pollfds_size;
michael@0: #endif	/* _PR_USE_POLL */
michael@0: };
michael@0: 
michael@0: #define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
michael@0: #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
michael@0: #define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
michael@0: #define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
michael@0: #define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
michael@0: #define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
michael@0: #define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
michael@0: #define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
michael@0: #define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
michael@0: #define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
michael@0: #define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
michael@0: #define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
michael@0: #define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
michael@0: 
michael@0: #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
michael@0: 
michael@0: struct _MDCPU {
michael@0:     struct _MDCPU_Unix md_unix;
michael@0: };
michael@0: 
michael@0: #define _MD_INIT_LOCKS()
michael@0: #define _MD_NEW_LOCK(lock) PR_SUCCESS
michael@0: #define _MD_FREE_LOCK(lock)
michael@0: #define _MD_LOCK(lock)
michael@0: #define _MD_UNLOCK(lock)
michael@0: #define _MD_INIT_IO()
michael@0: #define _MD_IOQ_LOCK()
michael@0: #define _MD_IOQ_UNLOCK()
michael@0: 
michael@0: extern PRStatus _MD_InitializeThread(PRThread *thread);
michael@0: 
michael@0: #define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
michael@0: #define _MD_INIT_THREAD                 _MD_InitializeThread
michael@0: #define _MD_EXIT_THREAD(thread)
michael@0: #define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
michael@0: #define _MD_RESUME_THREAD(thread)       _MD_resume_thread
michael@0: #define _MD_CLEAN_THREAD(_thread)
michael@0: 
michael@0: extern PRStatus _MD_CREATE_THREAD(
michael@0:     PRThread *thread,
michael@0:     void (*start) (void *),
michael@0:     PRThreadPriority priority,
michael@0:     PRThreadScope scope,
michael@0:     PRThreadState state,
michael@0:     PRUint32 stackSize);
michael@0: extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
michael@0: extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
michael@0: extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
michael@0: extern void _MD_YIELD(void);
michael@0: 
michael@0: #endif /* ! _PR_PTHREADS */
michael@0: 
michael@0: extern void _MD_EarlyInit(void);
michael@0: 
michael@0: #define _MD_EARLY_INIT                  _MD_EarlyInit
michael@0: #define _MD_FINAL_INIT                  _PR_UnixInit
michael@0: #define HAVE_CLOCK_MONOTONIC
michael@0: 
michael@0: /*
michael@0:  * We wrapped the select() call.  _MD_SELECT refers to the built-in,
michael@0:  * unwrapped version.
michael@0:  */
michael@0: #define _MD_SELECT __select
michael@0: 
michael@0: #ifdef _PR_POLL_AVAILABLE
michael@0: #include <sys/poll.h>
michael@0: extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds,
michael@0: 	int timeout);
michael@0: #define _MD_POLL __syscall_poll
michael@0: #endif
michael@0: 
michael@0: /* For writev() */
michael@0: #include <sys/uio.h>
michael@0: 
michael@0: extern void _MD_linux_map_sendfile_error(int err);
michael@0: 
michael@0: #endif /* nspr_linux_defs_h___ */