diff options
Diffstat (limited to 'lib/libc/arch/amd64/string/memset.S')
| -rw-r--r-- | lib/libc/arch/amd64/string/memset.S | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/lib/libc/arch/amd64/string/memset.S b/lib/libc/arch/amd64/string/memset.S deleted file mode 100644 index 0f6ae1064d0..00000000000 --- a/lib/libc/arch/amd64/string/memset.S +++ /dev/null @@ -1,54 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Public domain. - * Adapted for NetBSD/x86_64 by Frank van der Linden <fvdl@wasabisystems.com> - */ - -#include <machine/asm.h> - -ENTRY(memset) - movq %rsi,%rax - movq %rdx,%rcx - movq %rdi,%r11 - - cld /* set fill direction forward */ - - /* - * if the string is too short, it's really not worth the overhead - * of aligning to word boundaries, etc. So we jump to a plain - * unaligned set. - */ - cmpq $0x0f,%rcx - jle L1 - - movb %al,%ah /* copy char to all bytes in word */ - movl %eax,%edx - sall $16,%eax - orl %edx,%eax - - movl %eax,%edx - salq $32,%rax - orq %rdx,%rax - - movq %rdi,%rdx /* compute misalignment */ - negq %rdx - andq $7,%rdx - movq %rcx,%r8 - subq %rdx,%r8 - - movq %rdx,%rcx /* set until word aligned */ - rep - stosb - - movq %r8,%rcx - shrq $3,%rcx /* set by words */ - rep - stosq - - movq %r8,%rcx /* set remainder by bytes */ - andq $7,%rcx -L1: rep - stosb - movq %r11,%rax - - ret |