diff --git a/CMakeLists.txt b/CMakeLists.txt

index eaf3a35df..92d140d3b 100644

--- a/CMakeLists.txt

+++ b/CMakeLists.txt

@@ -77,6 +77,8 @@ elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64")

     set(WTF_CPU_PPC64 1)

 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")

     set(WTF_CPU_PPC64LE 1)

+elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "e2k")

+    set(WTF_CPU_E2K 1)

 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "parisc*")

     set(WTF_CPU_HPPA 1)

 elseif (LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "s390")

diff --git a/Source/JavaScriptCore/CMakeLists.txt b/Source/JavaScriptCore/CMakeLists.txt

index 3d184090d..48cd2d7eb 100644

--- a/Source/JavaScriptCore/CMakeLists.txt

+++ b/Source/JavaScriptCore/CMakeLists.txt

@@ -1283,6 +1283,7 @@ elseif (WTF_CPU_HPPA)

 elseif (WTF_CPU_PPC)

 elseif (WTF_CPU_PPC64)

 elseif (WTF_CPU_PPC64LE)

+elseif (WTF_CPU_E2K)

 elseif (WTF_CPU_S390)

 elseif (WTF_CPU_S390X)

 elseif (WTF_CPU_MIPS)

diff --git a/Source/JavaScriptCore/heap/MachineStackMarker.cpp b/Source/JavaScriptCore/heap/MachineStackMarker.cpp

index 883914fd3..eb9e880d2 100644

--- a/Source/JavaScriptCore/heap/MachineStackMarker.cpp

+++ b/Source/JavaScriptCore/heap/MachineStackMarker.cpp

@@ -88,7 +88,7 @@ static void pthreadSignalHandlerSuspendResume(int, siginfo_t*, void* ucontext)

     ucontext_t* userContext = static_cast<ucontext_t*>(ucontext);

 #if CPU(PPC)

     thread->suspendedMachineContext = *userContext->uc_mcontext.uc_regs;

-#else

+#elif !CPU(E2K)

     thread->suspendedMachineContext = userContext->uc_mcontext;

 #endif

diff --git a/Source/ThirdParty/brotli/dec/port.h b/Source/ThirdParty/brotli/dec/port.h

index 6b3d7352b..c68dc39a8 100644

--- a/Source/ThirdParty/brotli/dec/port.h

+++ b/Source/ThirdParty/brotli/dec/port.h

@@ -56,10 +56,15 @@

 #define BROTLI_TARGET_POWERPC64

 #endif

+#if defined(__e2k__)

+#define BROTLI_TARGET_E2K

+#endif

+

 #ifdef BROTLI_BUILD_PORTABLE

 #define BROTLI_ALIGNED_READ (!!1)

 #elif defined(BROTLI_TARGET_X86) || defined(BROTLI_TARGET_X64) || \

-     defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8)

+     defined(BROTLI_TARGET_ARMV7) || defined(BROTLI_TARGET_ARMV8) || \

+     defined(BROTLI_TARGET_E2K)

 /* Allow unaligned read only for white-listed CPUs. */

 #define BROTLI_ALIGNED_READ (!!0)

 #else

@@ -96,7 +101,7 @@ static BROTLI_INLINE void BrotliDump(const char* f, int l, const char* fn) {

 #elif defined(BROTLI_BUILD_32_BIT)

 #define BROTLI_64_BITS 0

 #elif defined(BROTLI_TARGET_X64) || defined(BROTLI_TARGET_ARMV8) || \

-    defined(BROTLI_TARGET_POWERPC64)

+    defined(BROTLI_TARGET_POWERPC64) || defined(BROTLI_TARGET_E2K)

 #define BROTLI_64_BITS 1

 #else

 #define BROTLI_64_BITS 0

diff --git a/Source/WTF/wtf/Platform.h b/Source/WTF/wtf/Platform.h

index 7aefa1bab..259a34b1e 100644

--- a/Source/WTF/wtf/Platform.h

+++ b/Source/WTF/wtf/Platform.h

@@ -181,6 +181,11 @@

 #define WTF_CPU_RISCV64 1

 #endif

+/* CPU(E2K) - Elbrus 2000 */

+#if defined(__e2k__)

+#define WTF_CPU_E2K 1

+#endif

+

 /* CPU(ARM64) - Apple */

 #if (defined(__arm64__) && defined(__APPLE__)) || defined(__aarch64__)

 #define WTF_CPU_ARM64 1

@@ -711,6 +716,7 @@

     || CPU(ARM64) \

     || CPU(S390X) \

     || CPU(MIPS64) \

+    || CPU(E2K) \

     || CPU(PPC64) \

     || CPU(PPC64LE) \

     || CPU(RISCV64)

diff --git a/Source/WTF/wtf/dtoa/utils.h b/Source/WTF/wtf/dtoa/utils.h

index 176d5909f..11423d159 100644

--- a/Source/WTF/wtf/dtoa/utils.h

+++ b/Source/WTF/wtf/dtoa/utils.h

@@ -46,6 +46,7 @@

 // disabled.)

 // On Linux,x86 89255e-22 != Div_double(89255.0/1e22)

 #if defined(_M_X64) || defined(__x86_64__) || \

+defined(__e2k__) || \

 defined(__ARMEL__) || \

 defined(_MIPS_ARCH_MIPS32R2)

 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1