ref: 654935ba71201d7215d9fcd96181a330ec6ff617
dir: /libkern/memset-386.s/
TEXT memset(SB),$0 CLD MOVL p+0(FP), DI MOVBLZX c+4(FP), AX MOVL n+8(FP), BX /* * if not enough bytes, just copy */ CMPL BX, $9 JLS c3 /* * build word in AX */ MOVB AL, AH MOVL AX, CX SHLL $16, CX ORL CX, AX /* * copy whole longs */ c1: MOVL BX, CX SHRL $2, CX ANDL $3, BX REP; STOSL /* * copy the rest, by bytes */ c3: MOVL BX, CX REP; STOSB ret: MOVL p+0(FP),AX RET