tp/libs/MSL_C/MSL_Common/Src/mem.c

87 lines
2.3 KiB
C

#include "MSL_C/MSL_Common/Src/mem.h"
#include "MSL_C/MSL_Common/Src/mem_funcs.h"
/* 80366130-803661FC 360A70 00CC+00 0/0 2/2 0/0 .text memmove */
void* memmove(void* dst, const void* src, size_t n) {
unsigned char* csrc;
unsigned char* cdst;
int reverse = (unsigned int)src < (unsigned int)dst;
if (n >= 32) {
if (((unsigned int)dst ^ (unsigned int)src) & 3) {
if (!reverse) {
__copy_longs_unaligned(dst, src, n);
} else {
__copy_longs_rev_unaligned(dst, src, n);
}
} else {
if (!reverse) {
__copy_longs_aligned(dst, src, n);
} else {
__copy_longs_rev_aligned(dst, src, n);
}
}
return dst;
} else {
if (!reverse) {
csrc = ((unsigned char*)src) - 1;
cdst = ((unsigned char*)dst) - 1;
n++;
while (--n > 0) {
*++cdst = *++csrc;
}
} else {
csrc = (unsigned char*)src + n;
cdst = (unsigned char*)dst + n;
n++;
while (--n > 0) {
*--cdst = *--csrc;
}
}
}
return dst;
}
/* 80366104-80366130 360A44 002C+00 0/0 1/1 0/0 .text memchr */
void* memchr(const void* ptr, int ch, size_t count) {
const unsigned char* p;
unsigned long v = (ch & 0xff);
for (p = (unsigned char*)ptr - 1, count++; --count;)
if ((*++p & 0xff) == v)
return (void*)p;
return NULL;
}
/* 803660D8-80366104 360A18 002C+00 0/0 1/1 0/0 .text __memrchr */
void* __memrchr(const void* ptr, int ch, size_t count) {
const unsigned char* p;
unsigned long v = (ch & 0xff);
for (p = (unsigned char*)ptr + count, count++; --count;)
if (*--p == v)
return (void*)p;
return NULL;
}
/* 8036608C-803660D8 3609CC 004C+00 0/0 19/19 5/5 .text memcmp */
int memcmp(const void* lhs, const void* rhs, size_t count) {
const unsigned char* p1;
const unsigned char* p2;
for (p1 = (const unsigned char*)lhs - 1, p2 = (const unsigned char*)rhs - 1, count++; --count;)
if (*++p1 != *++p2)
return ((*p1 < *p2) ? -1 : +1);
return 0;
}