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| | .global memset
.type memset,@function
memset:
and $0xff,%esi
mov $0x101010101010101,%rax
mov %rdx,%rcx
mov %rdi,%r8
imul %rsi,%rax
cmp $16,%rcx
jb 1f
mov %rax,-8(%rdi,%rcx)
shr $3,%rcx
rep
stosq
mov %r8,%rax
ret
1: test %ecx,%ecx
jz 1f
mov %al,(%rdi)
mov %al,-1(%rdi,%rcx)
cmp $2,%ecx
jbe 1f
mov %al,1(%rdi)
mov %al,-2(%rdi,%rcx)
cmp $4,%ecx
jbe 1f
mov %eax,(%rdi)
mov %eax,-4(%rdi,%rcx)
cmp $8,%ecx
jbe 1f
mov %eax,4(%rdi)
mov %eax,-8(%rdi,%rcx)
1: mov %r8,%rax
ret
|