Index: src/OFSystemInfo.h
==================================================================
--- src/OFSystemInfo.h
+++ src/OFSystemInfo.h
@@ -182,36 +182,8 @@
  *
  * @return Whether the CPU supports AVX2
  */
 + (bool)supportsAVX2;
 #endif
-
-#ifdef OF_PPC_ASM
-/*!
- * @brief Returns whether the CPU supports AltiVec.
- *
- * @warning This method only checks CPU support and assumes OS support!
- *
- * @note This method is only available on PowerPC.
- *
- * @return Whether the CPU supports AltiVec
- */
-+ (bool)supportsAltiVec;
-#endif
-
-#ifdef OF_MIPS_ASM
-/*!
- * @brief Returns whether the CPU supports MXU.
- *
- * MXU is the SIMD extension of the JZ47XX SoCs.
- *
- * @warning This method only checks CPU support and assumes OS support!
- *
- * @note This method is only available on MIPS.
- *
- * @return Whether the CPU supports MXU
- */
-+ (bool)supportsMXU;
-#endif
 @end
 
 OF_ASSUME_NONNULL_END

Index: src/OFSystemInfo.m
==================================================================
--- src/OFSystemInfo.m
+++ src/OFSystemInfo.m
@@ -44,31 +44,19 @@
 # include <FindDirectory.h>
 #endif
 #ifdef __QNX__
 # include <sys/syspage.h>
 #endif
-#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
-# include <setjmp.h>
-# include <signal.h>
-#endif
 
 #if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
 struct x86_regs {
 	uint32_t eax, ebx, ecx, edx;
 };
 #endif
 
 static size_t pageSize;
 static size_t numberOfCPUs;
-#if defined(OF_PPC_ASM)
-static sig_atomic_t supportsAltiVec = 0;
-#elif defined(OF_MIPS_ASM)
-static sig_atomic_t supportsMXU = 0;
-#endif
-#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
-static sigjmp_buf SIGILLJumpBuffer;
-#endif
 
 #if defined(OF_X86_64_ASM)
 static OF_INLINE struct x86_regs OF_CONST_FUNC
 x86_cpuid(uint32_t eax, uint32_t ecx)
 {
@@ -105,45 +93,11 @@
 
 	return regs;
 }
 #endif
 
-#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
-static void
-SIGILLHandler(int signal)
-{
-	siglongjmp(SIGILLJumpBuffer, 1);
-}
-#endif
-
 @implementation OFSystemInfo
-#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
-+ (void)load
-{
-	if (sigsetjmp(SIGILLJumpBuffer, 1) == 0) {
-		signal(SIGILL, SIGILLHandler);
-# if defined(OF_PPC_ASM)
-		__asm__ __volatile__ (
-		    "vor	v0, v0, v0"
-		);
-		supportsAltiVec = 1;
-# elif defined(OF_MIPS_ASM)
-		/* This also enables the MXU */
-		__asm__ __volatile__ (
-		    "li	$t0, 1\n\t"
-		    ".word 0x7008042f	/* s32i2m xr16, $t0 */"
-		    :
-		    :
-		    : "$8" /* $t0 */
-		);
-		supportsMXU = 1;
-# endif
-	}
-	signal(SIGILL, SIG_DFL);
-}
-#endif
-
 + (void)initialize
 {
 	if (self != [OFSystemInfo class])
 		return;
 
@@ -414,21 +368,7 @@
 
 + (bool)supportsAVX2
 {
 	return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
 }
-#endif
-
-#ifdef OF_PPC_ASM
-+ (bool)supportsAltiVec
-{
-	return supportsAltiVec;
-}
-#endif
-
-#ifdef OF_MIPS_ASM
-+ (bool)supportsMXU
-{
-	return supportsMXU;
-}
 #endif
 @end