a806170e29
Most noteable part of this commit is the new local header file entry.h which contains all the function declarations of functions that get only called from asm code or are arch internal. That way we can avoid extern declarations in C files. This is more or less the same that was done for sparc64. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
/*
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* include/asm-s390/timex.h
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*
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* S390 version
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* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
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*
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* Derived from "include/asm-i386/timex.h"
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* Copyright (C) 1992, Linus Torvalds
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*/
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#ifndef _ASM_S390_TIMEX_H
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#define _ASM_S390_TIMEX_H
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/* Inline functions for clock register access. */
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static inline int set_clock(__u64 time)
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{
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int cc;
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asm volatile(
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" sck 0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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: "=d" (cc) : "m" (time), "a" (&time) : "cc");
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return cc;
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}
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static inline int store_clock(__u64 *time)
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{
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int cc;
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asm volatile(
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" stck 0(%2)\n"
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" ipm %0\n"
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" srl %0,28\n"
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: "=d" (cc), "=m" (*time) : "a" (time) : "cc");
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return cc;
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}
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static inline void set_clock_comparator(__u64 time)
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{
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asm volatile("sckc 0(%1)" : : "m" (time), "a" (&time));
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}
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static inline void store_clock_comparator(__u64 *time)
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{
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asm volatile("stckc 0(%1)" : "=m" (*time) : "a" (time));
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}
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#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
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typedef unsigned long long cycles_t;
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static inline unsigned long long get_clock (void)
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{
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unsigned long long clk;
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#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
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asm volatile("stck %0" : "=Q" (clk) : : "cc");
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#else /* __GNUC__ */
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asm volatile("stck 0(%1)" : "=m" (clk) : "a" (&clk) : "cc");
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#endif /* __GNUC__ */
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return clk;
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}
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static inline unsigned long long get_clock_xt(void)
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{
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unsigned char clk[16];
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#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
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asm volatile("stcke %0" : "=Q" (clk) : : "cc");
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#else /* __GNUC__ */
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asm volatile("stcke 0(%1)" : "=m" (clk)
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: "a" (clk) : "cc");
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#endif /* __GNUC__ */
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return *((unsigned long long *)&clk[1]);
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}
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static inline cycles_t get_cycles(void)
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{
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return (cycles_t) get_clock() >> 2;
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}
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int get_sync_clock(unsigned long long *clock);
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void init_cpu_timer(void);
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unsigned long long monotonic_clock(void);
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#endif
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