diff --git a/dyngen-exec.h b/dyngen-exec.h
index a741646..c9841df 100644
--- a/dyngen-exec.h
+++ b/dyngen-exec.h
@@ -31,57 +31,15 @@
    point because host CPU registers are used as global variables. Some
    host headers do not allow that. */
 #include <stddef.h>
+#include <stdint.h>
 
 #ifdef __OpenBSD__
 #include <sys/types.h>
-#else
-typedef unsigned char uint8_t;
-typedef unsigned short uint16_t;
-typedef unsigned int uint32_t;
-// Linux/Sparc64 defines uint64_t
-#if !(defined (__sparc_v9__) && defined(__linux__)) && !(defined(__APPLE__) && defined(__x86_64__))
-/* XXX may be done for all 64 bits targets ? */
-#if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) || defined(_ARCH_PPC64)
-typedef unsigned long uint64_t;
-#else
-typedef unsigned long long uint64_t;
-#endif
-#endif
-
-/* if Solaris/__sun__, don't typedef int8_t, as it will be typedef'd
-   prior to this and will cause an error in compliation, conflicting
-   with /usr/include/sys/int_types.h, line 75 */
-#ifndef __sun__
-typedef signed char int8_t;
-#endif
-typedef signed short int16_t;
-typedef signed int int32_t;
-// Linux/Sparc64 defines int64_t
-#if !(defined (__sparc_v9__) && defined(__linux__)) && !(defined(__APPLE__) && defined(__x86_64__))
-#if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) || defined(_ARCH_PPC64)
-typedef signed long int64_t;
-#else
-typedef signed long long int64_t;
-#endif
-#endif
 #endif
 
 /* XXX: This may be wrong for 64-bit ILP32 hosts.  */
 typedef void * host_reg_t;
 
-#define INT8_MIN		(-128)
-#define INT16_MIN		(-32767-1)
-#define INT32_MIN		(-2147483647-1)
-#define INT64_MIN		(-(int64_t)(9223372036854775807)-1)
-#define INT8_MAX		(127)
-#define INT16_MAX		(32767)
-#define INT32_MAX		(2147483647)
-#define INT64_MAX		((int64_t)(9223372036854775807))
-#define UINT8_MAX		(255)
-#define UINT16_MAX		(65535)
-#define UINT32_MAX		(4294967295U)
-#define UINT64_MAX		((uint64_t)(18446744073709551615))
-
 #ifdef HOST_BSD
 typedef struct __sFILE FILE;
 #else