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authorKartik Agaram <vc@akkartik.com>2020-01-01 18:22:19 -0800
committerKartik Agaram <vc@akkartik.com>2020-01-01 18:42:48 -0800
commit65409d2312e702a48d3cf5b32479d25266bda3c3 (patch)
tree62a7262fce61f2302109246da4536ce6f8e9ef80 /kernel.soso/spinlock.c
parenta6da50ad30d2e1825575ffef497ab450a8f26e94 (diff)
downloadmu-65409d2312e702a48d3cf5b32479d25266bda3c3.tar.gz
5858
Move script to create a Soso boot image into a sub-directory.

I'm trying to streamline newcomer attention to just a couple of use cases.
Diffstat (limited to 'kernel.soso/spinlock.c')
-rw-r--r--kernel.soso/spinlock.c25
1 files changed, 0 insertions, 25 deletions
diff --git a/kernel.soso/spinlock.c b/kernel.soso/spinlock.c
deleted file mode 100644
index 8efbdb20..00000000
--- a/kernel.soso/spinlock.c
+++ /dev/null
@@ -1,25 +0,0 @@
-#include "spinlock.h"
-
-static inline int32 exchangeAtomic(volatile int32* oldValueAddress, int32 newValue) {
-    //no need to use lock instruction on xchg
-
-    asm volatile ("xchgl %0, %1"
-                   : "=r"(newValue)
-                   : "m"(*oldValueAddress), "0"(newValue)
-                   : "memory");
-    return newValue;
-}
-
-void Spinlock_Init(Spinlock* spinlock) {
-    *spinlock = 0;
-}
-
-void Spinlock_Lock(Spinlock* spinlock) {
-    while (exchangeAtomic((int32*)spinlock, 1)) {
-        halt();
-    }
-}
-
-void Spinlock_Unlock(Spinlock* spinlock) {
-    *spinlock = 0;
-}