diff --git a/Libraries/crunch-r319/crnlib/crn_platform.h b/Libraries/crunch-r319/crnlib/crn_platform.h
index 352c78260..31434f994 100644
--- a/Libraries/crunch-r319/crnlib/crn_platform.h
+++ b/Libraries/crunch-r319/crnlib/crn_platform.h
@@ -36,7 +36,11 @@ const bool c_crnlib_big_endian_platform = !c_crnlib_little_endian_platform;
    #define CRNLIB_BREAKPOINT DebugBreak();
    #define CRNLIB_BUILTIN_EXPECT(c, v) c
 #elif defined(__GNUC__)
-   #define CRNLIB_BREAKPOINT asm("int $3");
+   #if defined(__i386__) || defined(__x86_64__)
+      #define CRNLIB_BREAKPOINT asm("int $3");
+   #else
+      #define CRNLIB_BREAKPOINT abort();
+   #endif
    #define CRNLIB_BUILTIN_EXPECT(c, v) __builtin_expect(c, v)
 #else
    #define CRNLIB_BREAKPOINT
diff --git a/Libraries/zstd-1.5.0/lib/common/compiler.h b/Libraries/zstd-1.5.0/lib/common/compiler.h
index a951d0ade..c388acc10 100644
--- a/Libraries/zstd-1.5.0/lib/common/compiler.h
+++ b/Libraries/zstd-1.5.0/lib/common/compiler.h
@@ -151,7 +151,7 @@
 
 /* vectorization
  * older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax */
-#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__)
+#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__) && !defined(__MCST__)
 #  if (__GNUC__ == 4 && __GNUC_MINOR__ > 3) || (__GNUC__ >= 5)
 #    define DONT_VECTORIZE __attribute__((optimize("no-tree-vectorize")))
 #  else
diff --git a/Source/Timing/timestamp.h b/Source/Timing/timestamp.h
index 598b1274c..cdd3bc954 100644
--- a/Source/Timing/timestamp.h
+++ b/Source/Timing/timestamp.h
@@ -26,11 +26,18 @@
 
 inline uint64_t GetTimestamp() {
         // Use rdtsc instruction to get the tsc or Time Stamp Counter
-#if (defined(PLATFORM_LINUX) || defined(PLATFORM_MACOSX)) && (defined(__i386__) || defined(__x86_64__))
+#if (defined(PLATFORM_LINUX) || defined(PLATFORM_MACOSX))
+#if (defined(__i386__) || defined(__x86_64__))
         uint32_t rax, rdx;
         asm volatile ( "lfence" ::: "memory" ); //Fence memory load to everything is executed up to this point.
         asm volatile ( "rdtsc\n" : "=a" (rax), "=d" (rdx) : : );
         return ((uint64_t)rdx << 32) + rax;
+#elif defined(__e2k__)
+        uint64_t clk;
+#pragma asm_inline
+        __asm__ ( "rrd %%clkr, %0" : "=r" (clk));
+        return clk;
+#endif
 #elif defined(PLATFORM_WINDOWS) && _MSC_VER >= 1600 
         unsigned __int64 i;
         _ReadBarrier();
diff --git a/Source/Utility/timing.h b/Source/Utility/timing.h
index 55363140b..aedae0e60 100644
--- a/Source/Utility/timing.h
+++ b/Source/Utility/timing.h
@@ -28,11 +28,18 @@
 
 inline uint64_t getCPUTSC() {
     // Use rdtsc instruction to get the tsc or Time Stamp Counter
-#if (defined(PLATFORM_LINUX) || defined(PLATFORM_MACOSX)) && (defined(__i386__) || defined(__x86_64__))
+#if (defined(PLATFORM_LINUX) || defined(PLATFORM_MACOSX))
+#if (defined(__i386__) || defined(__x86_64__))
     uint32_t rax, rdx;
     asm volatile ( "lfence" ::: "memory" ); //Fence memory load to everything is executed up to this point.
     asm volatile ( "rdtsc\n" : "=a" (rax), "=d" (rdx) : : );
     return ((uint64_t)rdx << 32) + rax;
+#elif defined(__e2k__)
+    uint64_t clk;
+#pragma asm_inline
+    __asm__ ("rrd %%clkr, %0": "=r" (clk));
+    return clk;
+#endif
 #elif defined(PLATFORM_WINDOWS) && _MSC_VER >= 1600 
     unsigned __int64 i;
     _ReadBarrier();