mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-30 23:10:38 +00:00
9598c227aa
Let's make it a bit more clear that we check the full 64 bits to fit into the 32 we return. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Suggested-by: David Hildenbrand <david@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20200624075226.92728-11-frankja@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
49 lines
1.0 KiB
C
49 lines
1.0 KiB
C
/*
|
|
* 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"
|
|
#include "s390-time.h"
|
|
|
|
/* Avoids compiler warnings when casting a pointer to a u32 */
|
|
static inline uint32_t ptr2u32(void *ptr)
|
|
{
|
|
IPL_assert((uint64_t)ptr <= 0xffffffffull, "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;
|
|
}
|
|
|
|
static inline void yield(void)
|
|
{
|
|
asm volatile ("diag 0,0,0x44"
|
|
: :
|
|
: "memory", "cc");
|
|
}
|
|
|
|
static inline void sleep(unsigned int seconds)
|
|
{
|
|
ulong target = get_time_seconds() + seconds;
|
|
|
|
while (get_time_seconds() < target) {
|
|
yield();
|
|
}
|
|
}
|
|
|
|
#endif
|