Index: src/macros.h
==================================================================
--- src/macros.h
+++ src/macros.h
@@ -276,10 +276,13 @@
 #  define OF_MIPS64_ASM
 # endif
 # ifdef OF_MIPS
 #  define OF_MIPS_ASM
 # endif
+# ifdef OF_PA_RISC
+#  define OF_PA_RISC_ASM
+# endif
 #endif
 
 #ifdef OF_APPLE_RUNTIME
 # if defined(OF_X86_64) || defined(OF_X86) || defined(OF_ARM64) || \
     defined(OF_ARM) || defined(OF_POWERPC)

Index: src/platform.h
==================================================================
--- src/platform.h
+++ src/platform.h
@@ -65,10 +65,13 @@
 # define OF_MIPS_EABI
 #elif defined(__sparc64__) || (defined(__sparc__) && defined(__arch64__))
 # define OF_SPARC64
 #elif defined(__sparc__) && !defined(__arch64__)
 # define OF_SPARC
+#elif defined(__hppa__) || defined(__HPPA__) || \
+    defined(_PA_RISC1_0) || defined(_PA_RISC1_1)
+# define OF_PA_RISC
 #endif
 
 #if defined(__APPLE__)
 # include <TargetConditionals.h>
 # if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE