1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/jit/BaselineCacheIR.h b/js/src/jit/BaselineCacheIR.h
new file mode 100644
index 000000000..187d18e3a
--- /dev/null
+++ b/js/src/jit/BaselineCacheIR.h
@@ -0,0 +1,67 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_BaselineCacheIR_h
+#define jit_BaselineCacheIR_h
+
+#include "gc/Barrier.h"
+#include "jit/CacheIR.h"
+
+namespace js {
+namespace jit {
+
+class ICFallbackStub;
+class ICStub;
+
+// See the 'Sharing Baseline stub code' comment in CacheIR.h for a description
+// of this class.
+class CacheIRStubInfo
+{
+    CacheKind kind_;
+    uint8_t stubDataOffset_;
+    const uint8_t* code_;
+    uint32_t length_;
+    const uint8_t* gcTypes_;
+
+    CacheIRStubInfo(CacheKind kind, uint32_t stubDataOffset, const uint8_t* code, uint32_t codeLength,
+                    const uint8_t* gcTypes)
+      : kind_(kind),
+        stubDataOffset_(stubDataOffset),
+        code_(code),
+        length_(codeLength),
+        gcTypes_(gcTypes)
+    {
+        MOZ_ASSERT(stubDataOffset_ == stubDataOffset, "stubDataOffset must fit in uint8_t");
+    }
+
+    CacheIRStubInfo(const CacheIRStubInfo&) = delete;
+    CacheIRStubInfo& operator=(const CacheIRStubInfo&) = delete;
+
+  public:
+    CacheKind kind() const { return kind_; }
+
+    const uint8_t* code() const { return code_; }
+    uint32_t codeLength() const { return length_; }
+    uint32_t stubDataOffset() const { return stubDataOffset_; }
+
+    StubField::GCType gcType(uint32_t i) const { return (StubField::GCType)gcTypes_[i]; }
+
+    static CacheIRStubInfo* New(CacheKind kind, uint32_t stubDataOffset,
+                                const CacheIRWriter& writer);
+
+    template <class T>
+    js::GCPtr<T>& getStubField(ICStub* stub, uint32_t field) const;
+};
+
+void TraceBaselineCacheIRStub(JSTracer* trc, ICStub* stub, const CacheIRStubInfo* stubInfo);
+
+ICStub* AttachBaselineCacheIRStub(JSContext* cx, const CacheIRWriter& writer, CacheKind kind,
+                                  ICFallbackStub* stub);
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_BaselineCacheIR_h */