webkitgtk: Add staging fix for musl support

This fix was already pushed to oe-core mailing list[1]. Patch was also
rebased for the `dunfell` branch and included in the staging layer while
it gets merged in upstream.

[1] https://lists.openembedded.org/g/openembedded-core/message/149590



Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

meta-ohos-staging/recipes-sato/webkit/webkitgtk/musl-lower-stack-usage.patch

+From 75316653c46b0cc1f50873d6a57cdae98bae91d5 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 17 Mar 2021 13:28:04 +0000
+Subject: [PATCH] reduce thread stack and heap usage for javascriptcore on musl
+
+default sizes for musl are smaller compared to glibc, this matches
+to musl defaults, avoid stack overflow crashes in jscore
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>
+
+---
+ Source/JavaScriptCore/runtime/OptionsList.h | 20 ++++++++++++++++----
+ 1 file changed, 16 insertions(+), 4 deletions(-)
+
+diff --git a/Source/JavaScriptCore/runtime/OptionsList.h b/Source/JavaScriptCore/runtime/OptionsList.h
+index 8ebd88e7..a8c15d8e 100644
+--- a/Source/JavaScriptCore/runtime/OptionsList.h
++++ b/Source/JavaScriptCore/runtime/OptionsList.h
+@@ -75,6 +75,18 @@ constexpr bool enableWebAssemblyStreamingApi = false;
+ // On instantiation of the first VM instance, the Options will be write protected
+ // and cannot be modified thereafter.
+ 
++#if OS(LINUX) && !defined(__GLIBC__)
++// non-glibc options on linux ( musl )
++constexpr unsigned jscMaxPerThreadStack = 80 * KB;
++constexpr unsigned jscSoftReservedZoneSize = 32 * KB;
++constexpr unsigned jscReservedZoneSize = 16 * KB;
++#else
++//default
++constexpr unsigned jscMaxPerThreadStack = 4 * MB;
++constexpr unsigned jscSoftReservedZoneSize = 128 * KB;
++constexpr unsigned jscReservedZoneSize = 64 * KB;
++#endif
++
+ #define FOR_EACH_JSC_OPTION(v)                                          \
+     v(Bool, useKernTCSM, true, Normal, "Note: this needs to go before other options since they depend on this value.") \
+     v(Bool, validateOptions, false, Normal, "crashes if mis-typed JSC options were passed to the VM") \
+@@ -90,9 +102,9 @@ constexpr bool enableWebAssemblyStreamingApi = false;
+     \
+     v(Bool, reportMustSucceedExecutableAllocations, false, Normal, nullptr) \
+     \
+-    v(Unsigned, maxPerThreadStackUsage, 5 * MB, Normal, "Max allowed stack usage by the VM") \
+-    v(Unsigned, softReservedZoneSize, 128 * KB, Normal, "A buffer greater than reservedZoneSize that reserves space for stringifying exceptions.") \
+-    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).") \
++    v(Unsigned, maxPerThreadStackUsage, jscMaxPerThreadStack, Normal, "Max allowed stack usage by the VM") \
++    v(Unsigned, softReservedZoneSize, jscSoftReservedZoneSize, Normal, "A buffer greater than reservedZoneSize that reserves space for stringifying exceptions.") \
++    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).") \
+     \
+     v(Bool, crashIfCantAllocateJITMemory, false, Normal, nullptr) \
+     v(Unsigned, jitMemoryReservationSize, 0, Normal, "Set this number to change the executable allocation size in ExecutableAllocatorFixedVMPool. (In bytes.)") \
+@@ -569,7 +581,7 @@ public:
+     bool init(const char*);
+     bool isInRange(unsigned);
+     const char* rangeString() const { return (m_state > InitError) ? m_rangeString : s_nullRangeStr; }
+-    
++
+     void dump(PrintStream& out) const;
+ 
+ private:

meta-ohos-staging/recipes-sato/webkit/webkitgtk_2.28.2.bbappend

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+SRC_URI += "file://musl-lower-stack-usage.patch"