diff mbox series

[09/15] s390-bios: ptr2u32 and u32toptr

Message ID 1544623878-11248-10-git-send-email-jjherne@linux.ibm.com
State New
Headers show
Series s390: vfio-ccw dasd ipl support | expand

Commit Message

Jason J. Herne Dec. 12, 2018, 2:11 p.m. UTC 
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>
---
 pc-bios/s390-ccw/libc.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/pc-bios/s390-ccw/libc.h b/pc-bios/s390-ccw/libc.h
index 818517f..e198f0b 100644
--- a/pc-bios/s390-ccw/libc.h
+++ b/pc-bios/s390-ccw/libc.h
@@ -19,6 +19,18 @@  typedef unsigned short     uint16_t;
 typedef unsigned int       uint32_t;
 typedef unsigned long long uint64_t;
 
+/* Avoids compiler warnings when casting a pointer to a u32 */
+static inline uint32_t ptr2u32(void *ptr)
+{
+    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;
+}
+
 static inline void *memset(void *s, int c, size_t n)
 {
     size_t i;