From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 js/src/jit/PerfSpewer.h | 95 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 js/src/jit/PerfSpewer.h

(limited to 'js/src/jit/PerfSpewer.h')

diff --git a/js/src/jit/PerfSpewer.h b/js/src/jit/PerfSpewer.h
new file mode 100644
index 000000000..4fd449746
--- /dev/null
+++ b/js/src/jit/PerfSpewer.h
@@ -0,0 +1,95 @@
+/* -*- 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_PerfSpewer_h
+#define jit_PerfSpewer_h
+
+#ifdef JS_ION_PERF
+# include <stdio.h>
+# include "jit/MacroAssembler.h"
+#endif
+
+namespace js {
+namespace jit {
+
+class MBasicBlock;
+class MacroAssembler;
+
+#ifdef JS_ION_PERF
+void CheckPerf();
+bool PerfBlockEnabled();
+bool PerfFuncEnabled();
+static inline bool PerfEnabled() {
+    return PerfBlockEnabled() || PerfFuncEnabled();
+}
+#else
+static inline void CheckPerf() {}
+static inline bool PerfBlockEnabled() { return false; }
+static inline bool PerfFuncEnabled() { return false; }
+static inline bool PerfEnabled() { return false; }
+#endif
+
+#ifdef JS_ION_PERF
+
+struct Record {
+    const char* filename;
+    unsigned lineNumber;
+    unsigned columnNumber;
+    uint32_t id;
+    Label start, end;
+    size_t startOffset, endOffset;
+
+    Record(const char* filename,
+           unsigned lineNumber,
+           unsigned columnNumber,
+           uint32_t id)
+      : filename(filename), lineNumber(lineNumber),
+        columnNumber(columnNumber), id(id),
+        startOffset(0u), endOffset(0u)
+    {}
+};
+
+typedef Vector<Record, 1, SystemAllocPolicy> BasicBlocksVector;
+
+class PerfSpewer
+{
+  protected:
+    static uint32_t nextFunctionIndex;
+
+  public:
+    Label endInlineCode;
+
+  protected:
+    BasicBlocksVector basicBlocks_;
+
+  public:
+    virtual MOZ_MUST_USE bool startBasicBlock(MBasicBlock* blk, MacroAssembler& masm);
+    virtual MOZ_MUST_USE bool endBasicBlock(MacroAssembler& masm);
+    MOZ_MUST_USE bool noteEndInlineCode(MacroAssembler& masm);
+
+    void writeProfile(JSScript* script, JitCode* code, MacroAssembler& masm);
+};
+
+void writePerfSpewerBaselineProfile(JSScript* script, JitCode* code);
+void writePerfSpewerJitCodeProfile(JitCode* code, const char* msg);
+
+// wasm doesn't support block annotations.
+class WasmPerfSpewer : public PerfSpewer
+{
+  public:
+    MOZ_MUST_USE bool startBasicBlock(MBasicBlock* blk, MacroAssembler& masm) { return true; }
+    MOZ_MUST_USE bool endBasicBlock(MacroAssembler& masm) { return true; }
+};
+
+void writePerfSpewerWasmFunctionMap(uintptr_t base, uintptr_t size, const char* filename,
+                                    unsigned lineno, unsigned colIndex, const char* funcName);
+
+#endif // JS_ION_PERF
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_PerfSpewer_h */
-- 
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