112 lines
4.7 KiB
Diff
112 lines
4.7 KiB
Diff
Source: @q66, @pullmoll
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Original upstream: Alpine Linux
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Reason: fixing machine context access for musl libc; reduce stack/heap usage for jsc; fix some overly restrictive __GLIBC__ checks
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Updated for latest webkit2gtk.
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-diff --git Source/JavaScriptCore/runtime/MachineContext.h Source/JavaScriptCore/runtime/MachineContext.h
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index ead9cdf..09dc28a 100644
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--- Source/JavaScriptCore/runtime/MachineContext.h
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+++ Source/JavaScriptCore/runtime/MachineContext.h
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@@ -196,7 +196,7 @@ static inline void*& stackPointerImpl(mcontext_t& machineContext)
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#error Unknown Architecture
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#endif
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-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
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+#elif OS(FUCHSIA) || defined(__linux__)
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#if CPU(X86)
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return reinterpret_cast<void*&>((uintptr_t&) machineContext.gregs[REG_ESP]);
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@@ -347,7 +347,7 @@ static inline void*& framePointerImpl(mcontext_t& machineContext)
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#error Unknown Architecture
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#endif
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-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
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+#elif OS(FUCHSIA) || defined(__linux__)
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// The following sequence depends on glibc's sys/ucontext.h.
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#if CPU(X86)
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@@ -498,7 +498,7 @@ static inline void*& instructionPointerImpl(mcontext_t& machineContext)
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#error Unknown Architecture
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#endif
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-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
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+#elif OS(FUCHSIA) || defined(__linux__)
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// The following sequence depends on glibc's sys/ucontext.h.
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#if CPU(X86)
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@@ -656,7 +656,7 @@ inline void*& argumentPointer<1>(mcontext_t& machineContext)
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#error Unknown Architecture
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#endif
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-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
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+#elif OS(FUCHSIA) || defined(__linux__)
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// The following sequence depends on glibc's sys/ucontext.h.
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#if CPU(X86)
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@@ -773,7 +773,7 @@ inline void*& llintInstructionPointer(mcontext_t& machineContext)
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#error Unknown Architecture
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#endif
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-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
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+#elif OS(FUCHSIA) || defined(__linux__)
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// The following sequence depends on glibc's sys/ucontext.h.
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#if CPU(X86)
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diff --git Source/JavaScriptCore/runtime/OptionsList.h Source/JavaScriptCore/runtime/OptionsList.h
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index bc1cedb..f161f1c 100644
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--- Source/JavaScriptCore/runtime/OptionsList.h
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+++ Source/JavaScriptCore/runtime/OptionsList.h
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@@ -39,6 +39,16 @@ namespace JSC {
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JS_EXPORT_PRIVATE bool canUseJITCage();
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+#if defined(__GLIBC__)
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+constexpr unsigned jscMaxPerThreadStack = 5 * MB;
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+constexpr unsigned jscSoftReservedZoneSize = 128 * KB;
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+constexpr unsigned jscReservedZoneSize = 64 * KB;
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+#else
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+constexpr unsigned jscMaxPerThreadStack = 80 * KB;
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+constexpr unsigned jscSoftReservedZoneSize = 32 * KB;
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+constexpr unsigned jscReservedZoneSize = 16 * KB;
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+#endif
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+
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// How do JSC VM options work?
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// ===========================
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// The FOR_EACH_JSC_OPTION() macro below defines a list of all JSC options in use,
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@@ -86,9 +96,9 @@ JS_EXPORT_PRIVATE bool canUseJITCage();
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\
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v(Bool, reportMustSucceedExecutableAllocations, false, Normal, nullptr) \
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\
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- v(Unsigned, maxPerThreadStackUsage, 5 * MB, Normal, "Max allowed stack usage by the VM") \
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- v(Unsigned, softReservedZoneSize, 128 * KB, Normal, "A buffer greater than reservedZoneSize that reserves space for stringifying exceptions.") \
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- v(Unsigned, reservedZoneSize, 64 * KB, Normal, "The amount of stack space we guarantee to our clients (and to interal VM code that does not call out to clients).") \
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+ v(Unsigned, maxPerThreadStackUsage, jscMaxPerThreadStack, Normal, "Max allowed stack usage by the VM") \
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+ v(Unsigned, softReservedZoneSize, jscSoftReservedZoneSize, Normal, "A buffer greater than reservedZoneSize that reserves space for stringifying exceptions.") \
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+ v(Unsigned, reservedZoneSize, jscReservedZoneSize, Normal, "The amount of stack space we guarantee to our clients (and to interal VM code that does not call out to clients).") \
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\
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v(Bool, crashOnDisallowedVMEntry, ASSERT_ENABLED, Normal, "Forces a crash if we attempt to enter the VM when disallowed") \
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v(Bool, crashIfCantAllocateJITMemory, false, Normal, nullptr) \
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diff --git Source/WebCore/xml/XPathGrammar.cpp Source/WebCore/xml/XPathGrammar.cpp
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index 0875a5e..98d5153 100644
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--- Source/WebCore/xml/XPathGrammar.cpp
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+++ Source/WebCore/xml/XPathGrammar.cpp
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@@ -966,7 +966,7 @@ int yydebug;
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#if YYERROR_VERBOSE
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# ifndef yystrlen
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-# if defined __GLIBC__ && defined _STRING_H
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+# if defined __linux__ && defined _STRING_H
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# define yystrlen strlen
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# else
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/* Return the length of YYSTR. */
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@@ -989,7 +989,7 @@ yystrlen (yystr)
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# endif
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# ifndef yystpcpy
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-# if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
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+# if defined __linux__ && defined _STRING_H && defined _GNU_SOURCE
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# define yystpcpy stpcpy
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# else
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/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
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