Index: src/OFSystemInfo.h
==================================================================
--- src/OFSystemInfo.h
+++ src/OFSystemInfo.h
@@ -182,8 +182,21 @@
  *
  * @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
 @end
 
 OF_ASSUME_NONNULL_END

Index: src/OFSystemInfo.m
==================================================================
--- src/OFSystemInfo.m
+++ src/OFSystemInfo.m
@@ -44,19 +44,26 @@
 # include <FindDirectory.h>
 #endif
 #ifdef __QNX__
 # include <sys/syspage.h>
 #endif
+#ifdef OF_PPC_ASM
+# include <setjmp.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;
+#ifdef OF_PPC_ASM
+static sig_atomic_t altiVecSupported;
+static sigjmp_buf altiVecJumpBuffer;
+#endif
 
 #if defined(OF_X86_64_ASM)
 static OF_INLINE struct x86_regs OF_CONST_FUNC
 x86_cpuid(uint32_t eax, uint32_t ecx)
 {
@@ -92,12 +99,35 @@
 	);
 
 	return regs;
 }
 #endif
+
+#ifdef OF_PPC_ASM
+static void
+altiVecSIGILLHandler(int signal)
+{
+	altiVecSupported = 0;
+	siglongjmp(altiVecJumpBuffer, 1);
+}
+#endif
 
 @implementation OFSystemInfo
+#ifdef OF_PPC_ASM
++ (void)load
+{
+	altiVecSupported = 1;
+	if (sigsetjmp(altiVecJumpBuffer, 1) == 0) {
+		signal(SIGILL, altiVecSIGILLHandler);
+		__asm__ __volatile__ (
+		    "vor	v0, v0, v0"
+		);
+	}
+	signal(SIGILL, SIG_DFL);
+}
+#endif
+
 + (void)initialize
 {
 	if (self != [OFSystemInfo class])
 		return;
 
@@ -369,6 +399,13 @@
 + (bool)supportsAVX2
 {
 	return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
 }
 #endif
+
+#ifdef OF_PPC_ASM
++ (bool)supportsAltiVec
+{
+	return altiVecSupported;
+}
+#endif
 @end