#include <signal.h>
#endif
-#if defined(__i386__)
+#if defined(TARGET_X86)
#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__DragonFly__)
#include <ucontext.h>
#define UCONTEXT_REG_EDI(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_edi)
#define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.mc_eip)
#elif defined(__APPLE__)
-# if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
+# if defined (TARGET_IOS) || (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5)
#define UCONTEXT_REG_EAX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__eax)
#define UCONTEXT_REG_EBX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__ebx)
#define UCONTEXT_REG_ECX(ctx) (((ucontext_t*)(ctx))->uc_mcontext->__ss.__ecx)
#define UCONTEXT_REG_EIP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.gregs [REG_EIP])
#endif
-#elif defined(__x86_64__)
+#elif defined(TARGET_AMD64)
#if defined(__FreeBSD__)
#include <ucontext.h>
#define UCONTEXT_REG_LNK(ctx) ((ctx)->uc_mcontext.mc_lr)
#endif
-#elif defined(__arm__)
+#elif defined(TARGET_ARM)
#if defined(__APPLE__)
typedef ucontext_t arm_ucontext;