mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-05-03 22:17:03 +00:00
91337da5a1
Added brackets for expression to make it easy to understand and reduce the mistake of precedence. The rule is applied to the mixed same level of prevedence opeartors, high level presedence operators and logical expression. Signed-off-by: Yang, Yu-chu <yu-chu.yang@intel.com> Acked-by: Anthony Xu <anthony.xu@intel.com>
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef RTL_H
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#define RTL_H
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#include <types.h>
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union u_qword {
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struct {
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uint32_t low;
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uint32_t high;
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} dwords;
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uint64_t qword;
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};
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struct udiv_result {
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union u_qword q;
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union u_qword r;
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};
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/* Function prototypes */
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void udelay(uint32_t us);
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void *memchr(const void *void_s, int c, size_t n);
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int strcmp(const char *s1, const char *s2);
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int strncmp(const char *s1, const char *s2, size_t n);
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char *strcpy_s(char *d, size_t dmax, const char *s);
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char *strncpy_s(char *d, size_t dmax, const char *s, size_t slen);
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char *strchr(const char *s, int ch);
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void mdelay(unsigned int ms);
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size_t strnlen_s(const char *str, size_t maxlen);
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void *memset(void *base, uint8_t v, size_t n);
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void *memcpy_s(void *d, size_t dmax, const void *s, size_t slen);
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int udiv64(uint64_t dividend, uint64_t divisor, struct udiv_result *res);
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int udiv32(uint32_t dividend, uint32_t divisor, struct udiv_result *res);
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int atoi(const char *str);
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long strtol_deci(const char *nptr);
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uint64_t strtoul_hex(const char *nptr);
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/**
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* Frequency of TSC in KHz (where 1KHz = 1000Hz). Only valid after
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* calibrate_tsc() returns.
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*/
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extern uint32_t tsc_khz;
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static inline uint64_t us_to_ticks(uint32_t us)
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{
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return (((uint64_t)us * (uint64_t)tsc_khz) / 1000UL);
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}
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#define CYCLES_PER_MS us_to_ticks(1000U)
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static inline uint64_t ticks_to_us(uint64_t ticks)
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{
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return (ticks * 1000UL) / (uint64_t)tsc_khz;
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}
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static inline uint64_t ticks_to_ms(uint64_t ticks)
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{
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return ticks / (uint64_t)tsc_khz;
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}
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static inline uint64_t rdtsc(void)
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{
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uint32_t lo, hi;
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asm volatile("rdtsc" : "=a" (lo), "=d" (hi));
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return ((uint64_t)hi << 32) | lo;
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}
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#endif /* RTL_H */
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