Description
gilgil mentor add-nbo HW
How to compile & test
$ make
$ echo -n -e \\x00\\x00\\x03\\xe8 > sample1.bin
$ echo -n -e \\x00\\x00\\x01\\xf4 > sample2.bin
$ ./add-nbo sample1.bin sample2.bin
Additional (bswap speed test)
bswap과 mov 의 성능 비교
mov의 CPI가 1일테니, bswap은 CPI가 2일 듯
| a | mov | bswap |
|---|---|---|
| time | 22.397s | 45.331s |
$ gcc -o .test/BSWAP .test/bswap.c
$ gcc -o .test/MOV .test/mov.c
$ time .test/BSWAP
$ time .test/MOV
Specification
Summary
ntohs == htons
ntohl == htonl
