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LibC: Provide generic versions of memcpy() and memset() for non-i386 builds.

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We don't actually do any non-i386 builds at the moment, this is just gently
steering in a nice direction for the future. :^)
This commit is contained in:
Andreas Kling 2019-07-09 15:48:13 +02:00
parent c452aa891f
commit b149dd7584
1 changed files with 21 additions and 1 deletions
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22
Libraries/LibC/string.cpp
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@ -1,7 +1,8 @@
#include "ctype.h" #include <AK/Platform.h>
#include <AK/StdLibExtras.h> #include <AK/StdLibExtras.h>
#include <AK/Types.h> #include <AK/Types.h>
#include <assert.h> #include <assert.h>
#include <ctype.h>
#include <errno.h> #include <errno.h>
#include <signal.h> #include <signal.h>
#include <stdio.h> #include <stdio.h>
@ -132,6 +133,7 @@ int memcmp(const void* v1, const void* v2, size_t n)
return 0; return 0;
} }
#if ARCH(I386)
void* memcpy(void* dest_ptr, const void* src_ptr, size_t n) void* memcpy(void* dest_ptr, const void* src_ptr, size_t n)
{ {
if (n >= 1024) if (n >= 1024)
@ -182,6 +184,24 @@ void* memset(void* dest_ptr, int c, size_t n)
: "memory"); : "memory");
return dest_ptr; return dest_ptr;
} }
#else
void* memcpy(void* dest_ptr, const void* src_ptr, size_t n)
{
auto* dest = (u8*)dest_ptr;
auto* src = (const u8*)src_ptr;
for (size_t i = 0; i < n; ++i)
dest[i] = src[i];
return dest_ptr;
}
void* memset(void* dest_ptr, int c, size_t n)
{
auto* dest = (u8*)dest_ptr;
for (size_t i = 0; i < n; ++i)
dest[i] = (u8)c;
return dest_ptr;
}
#endif
void* memmove(void* dest, const void* src, size_t n) void* memmove(void* dest, const void* src, size_t n)
{ {