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libqt4-devel-doc
undo-fix-jit-crash-on-x86_64.patch
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File undo-fix-jit-crash-on-x86_64.patch of Package libqt4-devel-doc
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/ChangeLog b/src/3rdparty/javascriptcore/JavaScriptCore/ChangeLog index 5ab23e6..9cbf0c1 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/ChangeLog +++ b/src/3rdparty/javascriptcore/JavaScriptCore/ChangeLog @@ -1,30 +1,3 @@ -2010-07-08 Gavin Barraclough <barraclough@apple.com> - - Reviewed by Sam Weinig. - - https://bugs.webkit.org/show_bug.cgi?id=41641 - - Update compile flags to allow use of ExecutableAllocatorFixedVMPool on platforms - other than x86-64 (this may be useful on 32-bit platforms, too). - - Simplify ifdefs by dividing into thwo broad allocation strategies - (ENABLE_EXECUTABLE_ALLOCATOR_FIXED & ENABLE_EXECUTABLE_ALLOCATOR_DEMAND). - - Rename constant used in the code to have names descriptive of their purpose, - rather than their specific value on a given platform. - - * jit/ExecutableAllocator.cpp: - (JSC::ExecutableAllocator::reprotectRegion): - (JSC::ExecutableAllocator::cacheFlush): - * jit/ExecutableAllocatorFixedVMPool.cpp: - (JSC::FixedVMPoolAllocator::FixedVMPoolAllocator): - (JSC::FixedVMPoolAllocator::free): - (JSC::ExecutablePool::systemAlloc): - * jit/ExecutableAllocatorPosix.cpp: - * jit/ExecutableAllocatorSymbian.cpp: - * jit/ExecutableAllocatorWin.cpp: - * wtf/Platform.h: - 2010-08-24 Oliver Hunt <oliver@apple.com> Reviewed by Geoff Garen. diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/JavaScriptCore.pri b/src/3rdparty/javascriptcore/JavaScriptCore/JavaScriptCore.pri index 847f69c..b061321 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/JavaScriptCore.pri +++ b/src/3rdparty/javascriptcore/JavaScriptCore/JavaScriptCore.pri @@ -100,7 +100,6 @@ SOURCES += \ interpreter/CallFrame.cpp \ interpreter/Interpreter.cpp \ interpreter/RegisterFile.cpp \ - jit/ExecutableAllocatorFixedVMPool.cpp \ jit/ExecutableAllocatorPosix.cpp \ jit/ExecutableAllocatorSymbian.cpp \ jit/ExecutableAllocatorWin.cpp \ diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocator.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocator.cpp index f0ebbab..f6b27ec 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocator.cpp +++ b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocator.cpp @@ -33,27 +33,6 @@ namespace JSC { size_t ExecutableAllocator::pageSize = 0; -#if ENABLE(ASSEMBLER_WX_EXCLUSIVE) -void ExecutableAllocator::reprotectRegion(void* start, size_t size, ProtectionSeting setting) -{ - if (!pageSize) - intializePageSize(); - - // Calculate the start of the page containing this region, - // and account for this extra memory within size. - intptr_t startPtr = reinterpret_cast<intptr_t>(start); - intptr_t pageStartPtr = startPtr & ~(pageSize - 1); - void* pageStart = reinterpret_cast<void*>(pageStartPtr); - size += (startPtr - pageStartPtr); - - // Round size up - size += (pageSize - 1); - size &= ~(pageSize - 1); - - mprotect(pageStart, size, (setting == Writable) ? PROTECTION_FLAGS_RW : PROTECTION_FLAGS_RX); -} -#endif - } #endif // HAVE(ASSEMBLER) diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp index 16d0fb1..dd1db4e 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp +++ b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorFixedVMPool.cpp @@ -27,33 +27,25 @@ #include "ExecutableAllocator.h" -#if ENABLE(EXECUTABLE_ALLOCATOR_FIXED) - #include <errno.h> +#if ENABLE(ASSEMBLER) && OS(DARWIN) && CPU(X86_64) + #include "TCSpinLock.h" +#include <mach/mach_init.h> +#include <mach/vm_map.h> #include <sys/mman.h> #include <unistd.h> #include <wtf/AVLTree.h> #include <wtf/VMTags.h> -#if CPU(X86_64) - // These limits suitable on 64-bit platforms (particularly x86-64, where we require all jumps to have a 2Gb max range). - #define VM_POOL_SIZE (2u * 1024u * 1024u * 1024u) // 2Gb - #define COALESCE_LIMIT (16u * 1024u * 1024u) // 16Mb -#else - // These limits are hopefully sensible on embedded platforms. - #define VM_POOL_SIZE (32u * 1024u * 1024u) // 32Mb - #define COALESCE_LIMIT (4u * 1024u * 1024u) // 4Mb -#endif - -// ASLR currently only works on darwin (due to arc4random) & 64-bit (due to address space size). -#define VM_POOL_ASLR (OS(DARWIN) && CPU(X86_64)) - using namespace WTF; namespace JSC { +#define TWO_GB (2u * 1024u * 1024u * 1024u) +#define SIXTEEN_MB (16u * 1024u * 1024u) + // FreeListEntry describes a free chunk of memory, stored in the freeList. struct FreeListEntry { FreeListEntry(void* pointer, size_t size) @@ -299,12 +291,9 @@ public: // for now instead of 2^26 bits of ASLR lets stick with 25 bits of randomization plus // 2^24, which should put up somewhere in the middle of usespace (in the address range // 0x200000000000 .. 0x5fffffffffff). - intptr_t randomLocation = 0; -#if VM_POOL_ASLR - randomLocation = arc4random() & ((1 << 25) - 1); + intptr_t randomLocation = arc4random() & ((1 << 25) - 1); randomLocation += (1 << 24); randomLocation <<= 21; -#endif m_base = mmap(reinterpret_cast<void*>(randomLocation), m_totalHeapSize, INITIAL_PROTECTION_FLAGS, MAP_PRIVATE | MAP_ANON | MAP_NORESERVE, VM_TAG_FOR_EXECUTABLEALLOCATOR_MEMORY, 0); if (m_base == MAP_FAILED) CRASH(); @@ -398,7 +387,7 @@ public: // 16MB of allocations have been freed, sweep m_freeList // coalescing any neighboring fragments. m_countFreedSinceLastCoalesce += size; - if (m_countFreedSinceLastCoalesce >= COALESCE_LIMIT) { + if (m_countFreedSinceLastCoalesce >= SIXTEEN_MB) { m_countFreedSinceLastCoalesce = 0; coalesceFreeSpace(); } @@ -440,7 +429,7 @@ ExecutablePool::Allocation ExecutablePool::systemAlloc(size_t size) SpinLockHolder lock_holder(&spinlock); if (!allocator) - allocator = new FixedVMPoolAllocator(JIT_ALLOCATOR_LARGE_ALLOC_SIZE, VM_POOL_SIZE); + allocator = new FixedVMPoolAllocator(JIT_ALLOCATOR_LARGE_ALLOC_SIZE, TWO_GB); ExecutablePool::Allocation alloc = {reinterpret_cast<char*>(allocator->alloc(size)), size}; return alloc; } diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorPosix.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorPosix.cpp index b04049c..2eb0c87 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorPosix.cpp +++ b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorPosix.cpp @@ -27,7 +27,7 @@ #include "ExecutableAllocator.h" -#if ENABLE(EXECUTABLE_ALLOCATOR_DEMAND) && !OS(WINDOWS) && !OS(SYMBIAN) +#if ENABLE(ASSEMBLER) && OS(UNIX) && !OS(SYMBIAN) #include <sys/mman.h> #include <unistd.h> @@ -35,6 +35,8 @@ namespace JSC { +#if !(OS(DARWIN) && !PLATFORM(QT) && CPU(X86_64)) + void ExecutableAllocator::intializePageSize() { ExecutableAllocator::pageSize = getpagesize(); @@ -55,6 +57,29 @@ void ExecutablePool::systemRelease(const ExecutablePool::Allocation& alloc) ASSERT_UNUSED(result, !result); } -} +#endif // !(OS(DARWIN) && !PLATFORM(QT) && CPU(X86_64)) + +#if ENABLE(ASSEMBLER_WX_EXCLUSIVE) +void ExecutableAllocator::reprotectRegion(void* start, size_t size, ProtectionSeting setting) +{ + if (!pageSize) + intializePageSize(); + + // Calculate the start of the page containing this region, + // and account for this extra memory within size. + intptr_t startPtr = reinterpret_cast<intptr_t>(start); + intptr_t pageStartPtr = startPtr & ~(pageSize - 1); + void* pageStart = reinterpret_cast<void*>(pageStartPtr); + size += (startPtr - pageStartPtr); + // Round size up + size += (pageSize - 1); + size &= ~(pageSize - 1); + + mprotect(pageStart, size, (setting == Writable) ? PROTECTION_FLAGS_RW : PROTECTION_FLAGS_RX); +} #endif + +} + +#endif // HAVE(ASSEMBLER) diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorSymbian.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorSymbian.cpp index 9028f50..e82975c 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorSymbian.cpp +++ b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorSymbian.cpp @@ -22,7 +22,7 @@ #include "ExecutableAllocator.h" -#if ENABLE(EXECUTABLE_ALLOCATOR_DEMAND) && OS(SYMBIAN) +#if ENABLE(ASSEMBLER) && OS(SYMBIAN) #include <e32hal.h> #include <e32std.h> diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorWin.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorWin.cpp index 72a1d5f..e38323c 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorWin.cpp +++ b/src/3rdparty/javascriptcore/JavaScriptCore/jit/ExecutableAllocatorWin.cpp @@ -27,7 +27,7 @@ #include "ExecutableAllocator.h" -#if ENABLE(EXECUTABLE_ALLOCATOR_DEMAND) && OS(WINDOWS) +#if ENABLE(ASSEMBLER) && OS(WINDOWS) #include "windows.h" diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h b/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h index d930ed7..700977e 100644 --- a/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h +++ b/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Platform.h @@ -1016,16 +1016,6 @@ on MinGW. See https://bugs.webkit.org/show_bug.cgi?id=29268 */ #define ENABLE_ASSEMBLER_WX_EXCLUSIVE 0 #endif -/* Pick which allocator to use; we only need an executable allocator if the assembler is compiled in. - On x86-64 we use a single fixed mmap, on other platforms we mmap on demand. */ -#if ENABLE(ASSEMBLER) -#if CPU(X86_64) && !COMPILER(MINGW64) -#define ENABLE_EXECUTABLE_ALLOCATOR_FIXED 1 -#else -#define ENABLE_EXECUTABLE_ALLOCATOR_DEMAND 1 -#endif -#endif - #if !defined(ENABLE_PAN_SCROLLING) && OS(WINDOWS) #define ENABLE_PAN_SCROLLING 1 #endif
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