參考資訊：
https://zhuanlan.zhihu.com/p/597577575
https://studies.ac.upc.edu/doctorat/ENGRAP/VxWorks-device-drivers.htm
https://forums.windriver.com/t/vxworks-software-development-kit-sdk/43
https://mail.prz-rzeszow.pl/~ssamolej/vxworks/vxworks_kernel_programmers_guide_6.6.pdf
https://d13321s3lxgewa.cloudfront.net/downloads/wrsdk-vxworks7-docs/2309/README_qemu.html
https://learning.windriver.com/path/vxworks7-essentials-workbench-and-tools/vxworks-kernel-shell
main.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iosLib.h>
static int drvNum = 0;
static DEV_HDR hdr = {0};
int myProbe(void)
{
drvNum = iosDrvInstall(NULL, NULL, NULL, NULL, NULL, NULL, NULL);
iosDevAdd(&hdr, "/dev/hello", drvNum);
printf("Hello, world!\n");
return OK;
}
編譯
$ wr-cc main.c -o hello -dkm
執行
-> ld < hello
-> moduleShow
MODULE NAME MODULE ID GROUP # SEGMENT ADDRESSES
--------------------------- -------------------- ------- -------------------------
hello 0x00ffff800006720500 1 0xffffffff8c5a6000 (TEXT)
0xffffffff8c5a7000 (DATA)
0xffffffff8c5a7030 (BSS)
-> myProbe
Hello, world!
-> devs
drv refs name
22 [ 5] /dev/hello
13 [ 5] /dev/random
13 [ 5] /dev/urandom
12 [ 5] /dev/zero
11 [ 5] /fifos
16 [ 5] /host.host
14 [ 5] /input/event
0 [ 7] /null
5 [ 5] /ram
10 [ 5] /ram0
9 [ 5] /romfs
3 [ 5] /shm
10 [ 5] /tmp
2 [ 7] /ttyS0
value = 0 = 0x0
-> unld "hello"