Add sdl3_atomic.odin

vendor/sdl3/sdl3__foreign.odin

@@ -0,0 +1,6 @@
+package sdl3
+
+@(export)
+foreign import lib {
+	"SDL3.lib"
+}

vendor/sdl3/sdl3_asyncio.odin

@@ -29,7 +29,7 @@ AsyncIOOutcome :: struct {
 
 AsyncIOQueue :: struct {}
 
-@(default_calling_convention="c", link_prefix="SDL_")
+@(default_calling_convention="c", link_prefix="SDL_", require_results)
 foreign lib {
 	AsyncIOFromFile     :: proc(file: cstring, mode: cstring) -> ^AsyncIO ---
 	GetAsyncIOSize      :: proc(asyncio: ^AsyncIO) -> Sint64 ---

vendor/sdl3/sdl3_atomic.odin

@@ -0,0 +1,42 @@
+package sdl3
+
+import "base:intrinsics"
+import "core:c"
+
+SpinLock :: distinct c.int
+
+@(default_calling_convention="c", link_prefix="SDL_")
+foreign lib {
+	@(require_results)
+	TryLockSpinlock :: proc(lock: ^SpinLock) -> bool ---
+	LockSpinlock    :: proc(lock: ^SpinLock) ---
+	UnlockSpinlock  :: proc(lock: ^SpinLock) ---
+
+
+	MemoryBarrierReleaseFunction :: proc() ---
+	MemoryBarrierAcquireFunction :: proc() ---
+}
+
+MemoryBarrierRelease :: MemoryBarrierReleaseFunction
+MemoryBarrierAcquire :: MemoryBarrierAcquireFunction
+
+CPUPauseInstruction :: intrinsics.cpu_relax
+
+
+AtomicInt :: distinct c.int
+AtomicU32 :: distinct Uint32
+
+@(default_calling_convention="c", link_prefix="SDL_", require_results)
+foreign lib {
+	CompareAndSwapAtomicInt :: proc(a: ^AtomicInt, oldval, newval: c.int) -> bool ---
+	SetAtomicInt            :: proc(a: ^AtomicInt, v: c.int) -> int ---
+	GetAtomicInt            :: proc(a: ^AtomicInt) -> int ---
+	AddAtomicInt            :: proc(a: ^AtomicInt, v: c.int) -> int ---
+
+	CompareAndSwapAtomicU32     :: proc(a: ^AtomicU32, oldval, newval: Uint32) -> bool ---
+	SetAtomicU32                :: proc(a: ^AtomicU32, v: Uint32) -> Uint32 ---
+	GetAtomicU32                :: proc(a: ^AtomicU32) -> Uint32 ---
+	CompareAndSwapAtomicPointer :: proc(a: ^rawptr, oldval, newval: rawptr) -> bool ---
+	SetAtomicPointer            :: proc(a: ^rawptr, v: rawptr) -> rawptr ---
+	GetAtomicPointer            :: proc(a: ^rawptr) -> rawptr ---
+}

vendor/sdl3/sdl3_stdinc.odin

@@ -7,11 +7,6 @@ import "core:c"
 #assert(size_of(c.int) == size_of(b32))
 #assert(size_of(c.int) == size_of(rune))
 
-foreign import lib_ {
-	"SDL3.lib"
-}
-lib :: lib_
-
 
 SIZE_MAX :: 1<<(8*size_of(uint)) - 1