diff options
| author | grehan <grehan@FreeBSD.org> | 2004-07-22 01:28:51 +0000 |
|---|---|---|
| committer | grehan <grehan@FreeBSD.org> | 2004-07-22 01:28:51 +0000 |
| commit | 1248963e47812a7f285dfb3ada018e469fa03db7 (patch) | |
| tree | bccb0e20c741ec49a9846bd18235002beb0acfe4 /sys/powerpc/aim/vm_machdep.c | |
| parent | e77cc66588643df786ee7ef6cb0d0ef8a54ccc7f (diff) | |
| download | FreeBSD-src-1248963e47812a7f285dfb3ada018e469fa03db7.zip FreeBSD-src-1248963e47812a7f285dfb3ada018e469fa03db7.tar.gz | |
Update the callframe structure to leave space for the frame pointer
and saved link register as per the ABI call sequence. Update code
that uses this (fork_trampoline etc) to use the correct genassym'd
offsets.
This fixes the 'invalid LR' message when backtracing kernel
threads in DDB.
Diffstat (limited to 'sys/powerpc/aim/vm_machdep.c')
| -rw-r--r-- | sys/powerpc/aim/vm_machdep.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/powerpc/aim/vm_machdep.c b/sys/powerpc/aim/vm_machdep.c index 4e8c803..3b19213 100644 --- a/sys/powerpc/aim/vm_machdep.c +++ b/sys/powerpc/aim/vm_machdep.c @@ -146,6 +146,7 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags) td2->td_frame = tf; cf = (struct callframe *)tf - 1; + memset(cf, 0, sizeof(struct callframe)); cf->cf_func = (register_t)fork_return; cf->cf_arg0 = (register_t)td2; cf->cf_arg1 = (register_t)tf; @@ -321,6 +322,7 @@ cpu_set_upcall(struct thread *td, struct thread *td0) /* Set registers for trampoline to user mode. */ cf = (struct callframe *)tf - 1; + memset(cf, 0, sizeof(struct callframe)); cf->cf_func = (register_t)fork_return; cf->cf_arg0 = (register_t)td; cf->cf_arg1 = (register_t)tf; |
