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- TEXT memchr(SB),$0
- MOVL n+8(FP), CX
- CMPL CX, $0
- JEQ none
- MOVL p+0(FP), DI
- MOVBLZX c+4(FP), AX
- CLD
- /*
- * SCASB is memchr instruction
- */
- REPN; SCASB
- JEQ found
- none:
- MOVL $0, AX
- RET
- found:
- MOVL DI, AX
- SUBL $1, AX
- RET
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