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| author | deischen <deischen@FreeBSD.org> | 2003-04-25 01:50:30 +0000 |
|---|---|---|
| committer | deischen <deischen@FreeBSD.org> | 2003-04-25 01:50:30 +0000 |
| commit | 3d51b3a2809784a3fd4e35c34422c2f82d8fd818 (patch) | |
| tree | bb8eb253f377c8996df874bb13ce8f388ab880c7 /sys/kern/kern_context.c | |
| parent | af0b381b9f2eb4edc2bbd4c4d7b902ed42d913d7 (diff) | |
| download | FreeBSD-src-3d51b3a2809784a3fd4e35c34422c2f82d8fd818.zip FreeBSD-src-3d51b3a2809784a3fd4e35c34422c2f82d8fd818.tar.gz | |
Add an argument to get_mcontext() which specified whether the
syscall return values should be cleared. The system calls
getcontext() and swapcontext() want to return 0 on success
but these contexts can be switched to at a later time so
the return values need to be cleared in the saved register
sets. Other callers of get_mcontext() would normally want
the context without clearing the return values.
Remove the i386-specific context saving from the KSE code.
get_mcontext() is not i386-specific any more.
Fix a bad pointer in the alpha get_mcontext() code. The
context was being bcopy()'d from &td->tf_frame, but tf_frame
is itself a pointer, so the thread was being copied instead.
Spotted by jake.
Glanced at by: jake
Reviewed by: bde (months ago)
Diffstat (limited to 'sys/kern/kern_context.c')
| -rw-r--r-- | sys/kern/kern_context.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/kern/kern_context.c b/sys/kern/kern_context.c index 653475d..ed30a8b 100644 --- a/sys/kern/kern_context.c +++ b/sys/kern/kern_context.c @@ -71,7 +71,7 @@ getcontext(struct thread *td, struct getcontext_args *uap) if (uap->ucp == NULL) ret = EINVAL; else { - get_mcontext(td, &uc.uc_mcontext); + get_mcontext(td, &uc.uc_mcontext, 1); PROC_LOCK(td->td_proc); uc.uc_sigmask = td->td_sigmask; PROC_UNLOCK(td->td_proc); @@ -115,7 +115,7 @@ swapcontext(struct thread *td, struct swapcontext_args *uap) if (uap->oucp == NULL || uap->ucp == NULL) ret = EINVAL; else { - get_mcontext(td, &uc.uc_mcontext); + get_mcontext(td, &uc.uc_mcontext, 1); PROC_LOCK(td->td_proc); uc.uc_sigmask = td->td_sigmask; PROC_UNLOCK(td->td_proc); |
