Index: head/www/qt5-webengine/files/patch-src_3rdparty_chromium_v8_src_base_platform_platform-freebsd.cc
===================================================================
--- head/www/qt5-webengine/files/patch-src_3rdparty_chromium_v8_src_base_platform_platform-freebsd.cc
+++ head/www/qt5-webengine/files/patch-src_3rdparty_chromium_v8_src_base_platform_platform-freebsd.cc
@@ -0,0 +1,50 @@
+--- src/3rdparty/chromium/v8/src/base/platform/platform-freebsd.cc.orig	2019-01-16 10:59:47 UTC
++++ src/3rdparty/chromium/v8/src/base/platform/platform-freebsd.cc
+@@ -86,5 +86,47 @@ std::vector<OS::SharedLibraryAddress> OS::GetSharedLib
+ 
+ void OS::SignalCodeMovingGC() {}
+ 
++#ifdef __arm__
++
++bool OS::ArmUsingHardFloat() {
++// GCC versions 4.6 and above define __ARM_PCS or __ARM_PCS_VFP to specify
++// the Floating Point ABI used (PCS stands for Procedure Call Standard).
++// We use these as well as a couple of other defines to statically determine
++// what FP ABI used.
++// GCC versions 4.4 and below don't support hard-fp.
++// GCC versions 4.5 may support hard-fp without defining __ARM_PCS or
++// __ARM_PCS_VFP.
++
++#define GCC_VERSION \
++  (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
++#if GCC_VERSION >= 40600 && !defined(__clang__)
++#if defined(__ARM_PCS_VFP)
++  return true;
++#else
++  return false;
++#endif
++
++#elif GCC_VERSION < 40500 && !defined(__clang__)
++  return false;
++
++#else
++#if defined(__ARM_PCS_VFP)
++  return true;
++#elif defined(__ARM_PCS) || defined(__SOFTFP__) || defined(__SOFTFP) || \
++    !defined(__VFP_FP__)
++  return false;
++#else
++#error \
++    "Your version of compiler does not report the FP ABI compiled for."     \
++       "Please report it on this issue"                                        \
++       "http://code.google.com/p/v8/issues/detail?id=2140"
++
++#endif
++#endif
++#undef GCC_VERSION
++}
++
++#endif // def __arm__
++
+ }  // namespace base
+ }  // namespace v8
Index: head/www/qt5-webengine/files/patch-src_3rdparty_chromium_v8_src_libsampler_sampler.cc
===================================================================
--- head/www/qt5-webengine/files/patch-src_3rdparty_chromium_v8_src_libsampler_sampler.cc
+++ head/www/qt5-webengine/files/patch-src_3rdparty_chromium_v8_src_libsampler_sampler.cc
@@ -0,0 +1,15 @@
+--- src/3rdparty/chromium/v8/src/libsampler/sampler.cc.orig	2019-01-16 10:59:47 UTC
++++ src/3rdparty/chromium/v8/src/libsampler/sampler.cc
+@@ -550,9 +550,9 @@ void SignalHandler::FillRegisterState(void* context, R
+   state->sp = reinterpret_cast<void*>(mcontext.mc_rsp);
+   state->fp = reinterpret_cast<void*>(mcontext.mc_rbp);
+ #elif V8_HOST_ARCH_ARM
+-  state->pc = reinterpret_cast<void*>(mcontext.mc_r15);
+-  state->sp = reinterpret_cast<void*>(mcontext.mc_r13);
+-  state->fp = reinterpret_cast<void*>(mcontext.mc_r11);
++  state->pc = reinterpret_cast<void*>(mcontext.__gregs[_REG_PC]);
++  state->sp = reinterpret_cast<void*>(mcontext.__gregs[_REG_SP]);
++  state->fp = reinterpret_cast<void*>(mcontext.__gregs[_REG_FP]);
+ #endif  // V8_HOST_ARCH_*
+ #elif V8_OS_NETBSD
+ #if V8_HOST_ARCH_IA32