diff options
Diffstat (limited to 'Userland/Libraries/LibC/string.cpp')
| -rw-r--r-- | Userland/Libraries/LibC/string.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Userland/Libraries/LibC/string.cpp b/Userland/Libraries/LibC/string.cpp index 054553d8cf..d031a3cff8 100644 --- a/Userland/Libraries/LibC/string.cpp +++ b/Userland/Libraries/LibC/string.cpp @@ -130,17 +130,19 @@ int timingsafe_memcmp(void const* b1, void const* b2, size_t len) // https://pubs.opengroup.org/onlinepubs/9699919799/functions/memcpy.html void* memcpy(void* dest_ptr, void const* src_ptr, size_t n) { +#if ARCH(I386) || ARCH(X86_64) void* original_dest = dest_ptr; asm volatile( "rep movsb" : "+D"(dest_ptr), "+S"(src_ptr), "+c"(n)::"memory"); return original_dest; +#else +# error Unknown architecture +#endif } #if ARCH(I386) // https://pubs.opengroup.org/onlinepubs/9699919799/functions/memset.html -// -// For x86-64, an optimized ASM implementation is found in ./arch/x86_64/memset.S void* memset(void* dest_ptr, int c, size_t n) { size_t dest = (size_t)dest_ptr; @@ -164,6 +166,10 @@ void* memset(void* dest_ptr, int c, size_t n) : "memory"); return dest_ptr; } +#elif ARCH(X86_64) +// For x86-64, an optimized ASM implementation is found in ./arch/x86_64/memset.S +#else +# error Unknown architecture #endif // https://pubs.opengroup.org/onlinepubs/9699919799/functions/memmove.html |