1 /* 2 * Helper Functions 3 * 4 * Copyright (c) 2019 IBM Corp. 5 * 6 * Author(s): Jason J. Herne <jjherne@us.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #ifndef S390_CCW_HELPER_H 14 #define S390_CCW_HELPER_H 15 16 #include "s390-ccw.h" 17 18 /* Avoids compiler warnings when casting a pointer to a u32 */ 19 static inline uint32_t ptr2u32(void *ptr) 20 { 21 IPL_assert((uint64_t)ptr <= 0xffffffff, "ptr2u32: ptr too large"); 22 return (uint32_t)(uint64_t)ptr; 23 } 24 25 /* Avoids compiler warnings when casting a u32 to a pointer */ 26 static inline void *u32toptr(uint32_t n) 27 { 28 return (void *)(uint64_t)n; 29 } 30 31 #endif 32