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| author | Robert Morris <rtm@csail.mit.edu> | 2019-08-02 11:55:26 -0400 |
|---|---|---|
| committer | Robert Morris <rtm@csail.mit.edu> | 2019-08-02 11:55:26 -0400 |
| commit | 0c10cbe829787a2745b0f7e3ad46f200b0b94d34 (patch) | |
| tree | 804979bc6c773a75473b0c603f56536292b7cacc /labs/xv6.html | |
| parent | 0c3125b9ebf5fde1396620da3f5839b88a3ae50b (diff) | |
| download | xv6-labs-0c10cbe829787a2745b0f7e3ad46f200b0b94d34.tar.gz xv6-labs-0c10cbe829787a2745b0f7e3ad46f200b0b94d34.tar.bz2 xv6-labs-0c10cbe829787a2745b0f7e3ad46f200b0b94d34.zip | |
syscall lab nits
Diffstat (limited to 'labs/xv6.html')
| -rw-r--r-- | labs/xv6.html | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/labs/xv6.html b/labs/xv6.html index 8dc7786..13d581e 100644 --- a/labs/xv6.html +++ b/labs/xv6.html @@ -82,16 +82,16 @@ initial file system. You just ran one of them: <tt>ls</tt>. <h2>sleep</h2> -<p>Implement the UNIX program sleep, which sleeps for a user-specified - number of ticks. +<p>Implement the UNIX program sleep for xv6; your sleep should pause + for a user-specified number of ticks. <p>Some hints: <ul> <li>Look at some of the other programs in <tt>user/</tt> to see - how you can obtain the arguments passed to a program. If the user + how you can obtain the command-line arguments passed to a program. If the user forgets to pass an argument, sleep should print an error message. - <li>The argument is passed as a string; you can convert it to an + <li>The command-line argument is passed as a string; you can convert it to an integer using <tt>atoi</tt> (see user/ulib.c). <li>Use the system call <tt>sleep</tt> (see user/usys.S and kernel/sysproc.c). |