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- TEXT memccpy(SB),$0
- MOVL n+12(FP), CX
- CMPL CX, $0
- JEQ none
- MOVL p2+4(FP), DI
- MOVBLZX c+8(FP), AX
- CLD
- /*
- * find the character in the second string
- */
- REPN; SCASB
- JEQ found
- /*
- * if not found, set count to 'n'
- */
- none:
- MOVL $0, AX
- MOVL n+12(FP), BX
- JMP memcpy
- /*
- * if found, set count to bytes thru character
- */
- found:
- MOVL DI, AX
- SUBL p2+4(FP), AX
- MOVL AX, BX
- ADDL p1+0(FP), AX
- /*
- * copy the memory
- */
- memcpy:
- MOVL p1+0(FP), DI
- MOVL p2+4(FP), SI
- /*
- * copy whole longs
- */
- MOVL BX, CX
- SHRL $2, CX
- REP; MOVSL
- /*
- * copy the rest, by bytes
- */
- ANDL $3, BX
- MOVL BX, CX
- REP; MOVSB
- RET
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