diff options
| author | Jason J. Herne <jjherne@linux.ibm.com> | 2019-04-04 10:34:26 -0400 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2019-04-12 12:40:35 +0200 |
| commit | 1fb3e5cde8dcd9b5917aea9a0b2918e16be8be1e (patch) | |
| tree | 9ef393f17310b73fef3378e9d391c6a51f32d894 /pc-bios | |
| parent | c95df3d108028ff5a709ee3aefdb14401b07cb39 (diff) | |
s390-bios: ptr2u32 and u32toptr
Introduce inline functions to convert between pointers and unsigned 32-bit
ints. These are used to hide the ugliness required to avoid compiler
warnings.
Signed-off-by: Jason J. Herne <jjherne@linux.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1554388475-18329-8-git-send-email-jjherne@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'pc-bios')
| -rw-r--r-- | pc-bios/s390-ccw/helper.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/helper.h b/pc-bios/s390-ccw/helper.h new file mode 100644 index 0000000000..78d5bc7442 --- /dev/null +++ b/pc-bios/s390-ccw/helper.h @@ -0,0 +1,31 @@ +/* + * Helper Functions + * + * Copyright (c) 2019 IBM Corp. + * + * Author(s): Jason J. Herne <jjherne@us.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#ifndef S390_CCW_HELPER_H +#define S390_CCW_HELPER_H + +#include "s390-ccw.h" + +/* Avoids compiler warnings when casting a pointer to a u32 */ +static inline uint32_t ptr2u32(void *ptr) +{ + IPL_assert((uint64_t)ptr <= 0xffffffff, "ptr2u32: ptr too large"); + return (uint32_t)(uint64_t)ptr; +} + +/* Avoids compiler warnings when casting a u32 to a pointer */ +static inline void *u32toptr(uint32_t n) +{ + return (void *)(uint64_t)n; +} + +#endif |