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/*
* misc.h: miscellaneous support fns
*
* Copyright (c) 2010, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __MISC_H__
#define __MISC_H__
void print_hex(const char * buf, const void * prtptr, size_t size);
void print_system_values(void);
void print_test_chars(void);
bool test_virt_to_phys(uint64_t vaddr);
void dump_page_tables(void);
void delay(int millisecs);
/*
* These three "plus overflow" functions take a "x" value
* and add the "y" value to it and if the two values are
* greater than the size of the variable type, they will
* overflow the type and end up with a smaller value and
* return TRUE - that they did overflow. i.e.
* x + y <= variable type maximum.
*/
static inline bool plus_overflow_u64(uint64_t x, uint64_t y)
{
return ((((uint64_t)(~0)) - x) < y);
}
static inline bool plus_overflow_u32(uint32_t x, uint32_t y)
{
return ((((uint32_t)(~0)) - x) < y);
}
/*
* This checks to see if two numbers multiplied together are larger
* than the type that they are. Returns TRUE if OVERFLOWING.
* If the first parameter "x" is greater than zero and
* if that is true, that the largest possible value 0xFFFFFFFF / "x"
* is less than the second parameter "y". If "y" is zero then
* it will also fail because no unsigned number is less than zero.
*/
static inline bool multiply_overflow_u32(uint32_t x, uint32_t y)
{
return (x > 0) ? ((((uint32_t)(~0))/x) < y) : false;
}
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define AP_WAKE_TRIGGER_DEF 0xffffffff
#endif /* __MISC_H__ */
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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