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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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