| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657 |
- TEXT memset(SB), $0
- MOVL n+8(FP), R0
- BLE return
- MOVL s1+0(FP), A1
- CLRL R1
- MOVB c+7(FP), R1
- BEQ l1
- /*
- * create 4 replicated copies
- * of the byte in R1
- */
- MOVL R1, R2
- ASLL $8, R2
- ORL R2, R1
- MOVL R1, R2
- SWAP R2
- ORL R2, R1
- /*
- * byte-at-a-time until alligned
- */
- l1:
- MOVL A1, R1
- ANDL $3, R1
- BEQ l2
- SUBL $1, R0
- BLT return
- MOVB R1, (A1)+
- BRA l1
- /*
- * quad-long-at-a-time set
- */
- l2:
- SUBL $16, R0
- BLT l3
- MOVL R1, (A1)+
- MOVL R1, (A1)+
- MOVL R1, (A1)+
- MOVL R1, (A1)+
- BRA l2
- /*
- * cleanup byte-at-a-time
- */
- l3:
- ADDL $15, R0
- BLT return
- l4:
- MOVB R1, (A1)+
- SUBL $1, R0
- BGE l4
- return:
- MOVL s1+0(FP),R0
- RTS
|
