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/* Copyright 2002 Andi Kleen, SuSE Labs */
/*
* ISO C memset - set a memory block to a byte value.
*
* rdi destination
* rsi value (char)
* rdx count (bytes)
*
* rax original destination
*/
.globl __memset
.globl memset
.p2align 4
memset:
__memset:
movq %rdi,%r9
movl %edx,%r8d
andl $7,%r8d
movl %edx,%ecx
shrl $3,%ecx
/* expand byte value */
movzbl %sil,%esi
movabs $0x0101010101010101,%rax
mulq %rsi /* with rax, clobbers rdx */
rep
stosq
movl %r8d,%ecx
rep
stosb
movq %r9,%rax
ret
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