acrn-hypervisor/misc/efi-stub/stdlib.h

112 lines
2.8 KiB
C

/*
* Copyright (c) 2011, 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 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.
*
* This file contains some wrappers around the gnu-efi functions. As
* we're not going through uefi_call_wrapper() directly, this allows
* us to get some type-safety for function call arguments and for the
* compiler to check that the number of function call arguments is
* correct.
*
* It's also a good place to document the EFI interface.
*/
#ifndef __STDLIB_H__
#define __STDLIB_H__
static inline void memset(void *dstv, char ch, UINTN size)
{
char *dst = dstv;
int32_t i;
for (i = 0; i < size; i++)
dst[i] = ch;
}
static inline void memcpy(char *dst, const char *src, UINTN size)
{
int32_t i;
for (i = 0; i < size; i++)
*dst++ = *src++;
}
static inline int32_t strlen(const char *str)
{
int32_t len;
len = 0;
while (*str++)
len++;
return len;
}
static inline CHAR16 *strstr_16(CHAR16 *haystack, CHAR16 *needle, UINTN len)
{
CHAR16 *p;
CHAR16 *word = NULL;
if (!len)
return NULL;
p = haystack;
while (*p) {
if (!StrnCmp(p, needle, len)) {
word = p;
break;
}
p++;
}
return (CHAR16*)word;
}
static inline char *ch16_2_ch8(CHAR16 *str16, UINTN len)
{
UINTN i;
char *str8;
str8 = AllocatePool((len + 1) * sizeof(char));
for (i = 0; i < len; i++)
str8[i] = str16[i];
str8[len] = 0;
return str8;
}
#endif /* __STDLIB_H__ */