ref: 887ae1a17b54babf6a0946872bf6faaac1427be1
dir: /sys/src/libc/386/memset.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 set bytes */ CMPL BX, $9 JLS c3 /* * build word in AX */ MOVB AL, AH MOVL AX, CX SHLL $16, CX ORL CX, AX /* * set whole longs */ c1: MOVL BX, CX SHRL $2, CX ANDL $3, BX REP; STOSL /* * set the rest, by bytes */ c3: MOVL BX, CX REP; STOSB ret: MOVL p+0(FP),AX RET