/**
 * Memory-related functions.
 */
module hulk.memory;

import ldc.llvmasm;

void memset(void * dest, ubyte v, size_t n)
{
    __asm("rep stosb",
          "{al},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
          v, n, dest);
}

void memset16(void * dest, ushort v, size_t n)
{
    __asm("rep stosw",
          "{ax},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
          v, n, dest);
}

void memset32(void * dest, uint v, size_t n)
{
    __asm("rep stosl",
          "{eax},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
          v, n, dest);
}

void memset64(void * dest, ulong v, size_t n)
{
    __asm("rep stosq",
          "{rax},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
          v, n, dest);
}

void memcpy(void * dest, const(void) * src, size_t n)
{
    __asm("rep movsb",
          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
          n, src, dest);
}

void memcpy16(void * dest, const(void) * src, size_t n)
{
    __asm("rep movsw",
          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
          n, src, dest);
}

void memcpy32(void * dest, const(void) * src, size_t n)
{
    __asm("rep movsl",
          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
          n, src, dest);
}

void memcpy64(void * dest, const(void) * src, size_t n)
{
    __asm("rep movsq",
          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
          n, src, dest);
}