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| author | Robert Morris <[email protected]> | 2023-09-08 09:24:27 -0400 |
|---|---|---|
| committer | Robert Morris <[email protected]> | 2023-09-08 09:24:27 -0400 |
| commit | 18998096701a1d4695b2097006d7afc2a539bd89 (patch) | |
| tree | 48ea20d4e59827b69a647e7e3823f40465351909 /user/ulib.c | |
| parent | 74c1eba516fdb0ec1a17b16be7e76613ccba92bf (diff) | |
| download | xv6-labs-18998096701a1d4695b2097006d7afc2a539bd89.tar.gz xv6-labs-18998096701a1d4695b2097006d7afc2a539bd89.tar.bz2 xv6-labs-18998096701a1d4695b2097006d7afc2a539bd89.zip | |
3rd lab
Diffstat (limited to 'user/ulib.c')
| -rw-r--r-- | user/ulib.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/user/ulib.c b/user/ulib.c index c7b66c4..871adc9 100644 --- a/user/ulib.c +++ b/user/ulib.c @@ -1,8 +1,13 @@ #include "kernel/types.h" #include "kernel/stat.h" #include "kernel/fcntl.h" +#ifdef LAB_PGTBL +#include "kernel/riscv.h" +#include "kernel/memlayout.h" +#endif #include "user/user.h" + // // wrapper so that it's OK if main() does not call exit(). // @@ -145,3 +150,12 @@ memcpy(void *dst, const void *src, uint n) { return memmove(dst, src, n); } + +#ifdef LAB_PGTBL +int +ugetpid(void) +{ + struct usyscall *u = (struct usyscall *)USYSCALL; + return u->pid; +} +#endif |