Changeset View
Changeset View
Standalone View
Standalone View
head/lib/libc/amd64/string/memmove.S
| Show First 20 Lines • Show All 133 Lines • ▼ Show 20 Lines | 100001: | ||||
| movb (%rsi),%dl | movb (%rsi),%dl | ||||
| movb %dl,(%rdi) | movb %dl,(%rdi) | ||||
| 100000: | 100000: | ||||
| \end | \end | ||||
| ret | ret | ||||
| ALIGN_TEXT | ALIGN_TEXT | ||||
| 1256: | 1256: | ||||
| testb $15,%dil | |||||
| jnz 100f | |||||
| .if \erms == 1 | .if \erms == 1 | ||||
| rep | rep | ||||
| movsb | movsb | ||||
| .else | .else | ||||
| shrq $3,%rcx /* copy by 64-bit words */ | shrq $3,%rcx /* copy by 64-bit words */ | ||||
| rep | rep | ||||
| movsq | movsq | ||||
| movq %rdx,%rcx | |||||
| andl $7,%ecx /* any bytes left? */ | |||||
| jne 100408b | |||||
| .endif | |||||
| \end | |||||
| ret | |||||
| 100: | |||||
| movq (%rsi),%r8 | |||||
| movq 8(%rsi),%r9 | |||||
| movq %rdi,%r10 | |||||
| movq %rdi,%rcx | |||||
| andq $15,%rcx | |||||
| leaq -16(%rdx,%rcx),%rdx | |||||
| neg %rcx | |||||
| leaq 16(%rdi,%rcx),%rdi | |||||
| leaq 16(%rsi,%rcx),%rsi | |||||
| movq %rdx,%rcx | |||||
| .if \erms == 1 | |||||
| rep | |||||
| movsb | |||||
| movq %r8,(%r10) | |||||
| movq %r9,8(%r10) | |||||
| .else | |||||
| shrq $3,%rcx /* copy by 64-bit words */ | |||||
| rep | |||||
| movsq | |||||
| movq %r8,(%r10) | |||||
| movq %r9,8(%r10) | |||||
| movq %rdx,%rcx | movq %rdx,%rcx | ||||
| andl $7,%ecx /* any bytes left? */ | andl $7,%ecx /* any bytes left? */ | ||||
| jne 100408b | jne 100408b | ||||
| .endif | .endif | ||||
| \end | \end | ||||
| ret | ret | ||||
| .if \overlap == 1 | .if \overlap == 1 | ||||
| ▲ Show 20 Lines • Show All 122 Lines • Show Last 20 Lines | |||||