diff options
Diffstat (limited to 'www/firefox52/patches/patch-js_src_jit_none_AtomicOperations-sparc.h')
| -rw-r--r-- | www/firefox52/patches/patch-js_src_jit_none_AtomicOperations-sparc.h | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/www/firefox52/patches/patch-js_src_jit_none_AtomicOperations-sparc.h b/www/firefox52/patches/patch-js_src_jit_none_AtomicOperations-sparc.h new file mode 100644 index 00000000000..79b4f7550bb --- /dev/null +++ b/www/firefox52/patches/patch-js_src_jit_none_AtomicOperations-sparc.h @@ -0,0 +1,261 @@ +$NetBSD: patch-js_src_jit_none_AtomicOperations-sparc.h,v 1.1 2017/04/27 01:55:57 ryoon Exp $ + +Part of https://bugzilla.mozilla.org/show_bug.cgi?id=1232150 + +--- js/src/jit/none/AtomicOperations-sparc.h.orig 2016-08-01 16:14:38.000000000 +0000 ++++ js/src/jit/none/AtomicOperations-sparc.h +@@ -249,3 +249,254 @@ js::jit::RegionLock::release(void* addr) + #endif + + #endif // jit_sparc_AtomicOperations_sparc_h ++/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- ++ * vim: set ts=8 sts=4 et sw=4 tw=99: ++ * 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/. */ ++ ++/* For documentation, see jit/AtomicOperations.h */ ++ ++#ifndef jit_sparc_AtomicOperations_sparc_h ++#define jit_sparc_AtomicOperations_sparc_h ++ ++#include "mozilla/Assertions.h" ++#include "mozilla/Types.h" ++ ++#if defined(__clang__) || defined(__GNUC__) ++ ++// The default implementation tactic for gcc/clang is to use the newer ++// __atomic intrinsics added for use in C++11 <atomic>. Where that ++// isn't available, we use GCC's older __sync functions instead. ++// ++// ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS is kept as a backward ++// compatible option for older compilers: enable this to use GCC's old ++// __sync functions instead of the newer __atomic functions. This ++// will be required for GCC 4.6.x and earlier, and probably for Clang ++// 3.1, should we need to use those versions. ++ ++//#define ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ ++inline bool ++js::jit::AtomicOperations::isLockfree8() ++{ ++# ifndef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ MOZ_ASSERT(__atomic_always_lock_free(sizeof(int8_t), 0)); ++ MOZ_ASSERT(__atomic_always_lock_free(sizeof(int16_t), 0)); ++ MOZ_ASSERT(__atomic_always_lock_free(sizeof(int32_t), 0)); ++# if defined(__LP64__) ++ MOZ_ASSERT(__atomic_always_lock_free(sizeof(int64_t), 0)); ++# endif ++ return true; ++# else ++ return false; ++# endif ++} ++ ++inline void ++js::jit::AtomicOperations::fenceSeqCst() ++{ ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ __sync_synchronize(); ++# else ++ __atomic_thread_fence(__ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::loadSeqCst(T* addr) ++{ ++ MOZ_ASSERT(sizeof(T) < 8 || isLockfree8()); ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ __sync_synchronize(); ++ T v = *addr; ++ __sync_synchronize(); ++# else ++ T v; ++ __atomic_load(addr, &v, __ATOMIC_SEQ_CST); ++# endif ++ return v; ++} ++ ++template<typename T> ++inline void ++js::jit::AtomicOperations::storeSeqCst(T* addr, T val) ++{ ++ MOZ_ASSERT(sizeof(T) < 8 || isLockfree8()); ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ __sync_synchronize(); ++ *addr = val; ++ __sync_synchronize(); ++# else ++ __atomic_store(addr, &val, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::compareExchangeSeqCst(T* addr, T oldval, T newval) ++{ ++ MOZ_ASSERT(sizeof(T) < 8 || isLockfree8()); ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ return __sync_val_compare_and_swap(addr, oldval, newval); ++# else ++ __atomic_compare_exchange(addr, &oldval, &newval, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); ++ return oldval; ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::fetchAddSeqCst(T* addr, T val) ++{ ++#if !defined( __LP64__) ++ static_assert(sizeof(T) <= 4, "not available for 8-byte values yet"); ++#endif ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ return __sync_fetch_and_add(addr, val); ++# else ++ return __atomic_fetch_add(addr, val, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::fetchSubSeqCst(T* addr, T val) ++{ ++#if !defined( __LP64__) ++ static_assert(sizeof(T) <= 4, "not available for 8-byte values yet"); ++#endif ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ return __sync_fetch_and_sub(addr, val); ++# else ++ return __atomic_fetch_sub(addr, val, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::fetchAndSeqCst(T* addr, T val) ++{ ++#if !defined( __LP64__) ++ static_assert(sizeof(T) <= 4, "not available for 8-byte values yet"); ++#endif ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ return __sync_fetch_and_and(addr, val); ++# else ++ return __atomic_fetch_and(addr, val, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::fetchOrSeqCst(T* addr, T val) ++{ ++#if !defined( __LP64__) ++ static_assert(sizeof(T) <= 4, "not available for 8-byte values yet"); ++#endif ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ return __sync_fetch_and_or(addr, val); ++# else ++ return __atomic_fetch_or(addr, val, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::fetchXorSeqCst(T* addr, T val) ++{ ++#if !defined( __LP64__) ++ static_assert(sizeof(T) <= 4, "not available for 8-byte values yet"); ++#endif ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ return __sync_fetch_and_xor(addr, val); ++# else ++ return __atomic_fetch_xor(addr, val, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::loadSafeWhenRacy(T* addr) ++{ ++ return *addr; // FIXME (1208663): not yet safe ++} ++ ++template<typename T> ++inline void ++js::jit::AtomicOperations::storeSafeWhenRacy(T* addr, T val) ++{ ++ *addr = val; // FIXME (1208663): not yet safe ++} ++ ++inline void ++js::jit::AtomicOperations::memcpySafeWhenRacy(void* dest, const void* src, size_t nbytes) ++{ ++ ::memcpy(dest, src, nbytes); // FIXME (1208663): not yet safe ++} ++ ++inline void ++js::jit::AtomicOperations::memmoveSafeWhenRacy(void* dest, const void* src, size_t nbytes) ++{ ++ ::memmove(dest, src, nbytes); // FIXME (1208663): not yet safe ++} ++ ++template<typename T> ++inline T ++js::jit::AtomicOperations::exchangeSeqCst(T* addr, T val) ++{ ++ MOZ_ASSERT(sizeof(T) < 8 || isLockfree8()); ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ T v; ++ __sync_synchronize(); ++ do { ++ v = *addr; ++ } while (__sync_val_compare_and_swap(addr, v, val) != v); ++ return v; ++# else ++ T v; ++ __atomic_exchange(addr, &val, &v, __ATOMIC_SEQ_CST); ++ return v; ++# endif ++} ++ ++template<size_t nbytes> ++inline void ++js::jit::RegionLock::acquire(void* addr) ++{ ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ while (!__sync_bool_compare_and_swap(&spinlock, 0, 1)) ++ ; ++# else ++ uint32_t zero = 0; ++ uint32_t one = 1; ++ while (!__atomic_compare_exchange(&spinlock, &zero, &one, false, __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE)) { ++ zero = 0; ++ continue; ++ } ++# endif ++} ++ ++template<size_t nbytes> ++inline void ++js::jit::RegionLock::release(void* addr) ++{ ++ MOZ_ASSERT(AtomicOperations::loadSeqCst(&spinlock) == 1, "releasing unlocked region lock"); ++# ifdef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ __sync_sub_and_fetch(&spinlock, 1); ++# else ++ uint32_t zero = 0; ++ __atomic_store(&spinlock, &zero, __ATOMIC_SEQ_CST); ++# endif ++} ++ ++# undef ATOMICS_IMPLEMENTED_WITH_SYNC_INTRINSICS ++ ++#elif defined(ENABLE_SHARED_ARRAY_BUFFER) ++ ++# error "Either disable JS shared memory, use GCC or Clang, or add code here" ++ ++#endif ++ ++#endif // jit_sparc_AtomicOperations_sparc_h |