Some proc cleanup, moving some of copyproc into allocproc.

Also, an experiment: use "thread-local" storage for c and cp
instead of the #define macro for curproc[cpu()].

1 files changed, 6 insertions, 0 deletions

diff --git a/x86.h b/x86.h
index 80d7487..ecb5d2a 100644
--- a/x86.h
+++ b/x86.h
@@ -104,6 +104,12 @@ xchg(volatile uint *addr, uint newval)
 }
 
 static inline void
+setgs(ushort gs)
+{
+  asm volatile("movw %0, %%gs" : : "r" (gs));
+}
+
+static inline void
 cli(void)
 {
   asm volatile("cli");