1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/jit/riscv64/constant/Constant-riscv64.h b/js/src/jit/riscv64/constant/Constant-riscv64.h
new file mode 100644
index 0000000000..b9b1f894e7
--- /dev/null
+++ b/js/src/jit/riscv64/constant/Constant-riscv64.h
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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_riscv64_constant_Constant_riscv64_h
+#define jit_riscv64_constant_Constant_riscv64_h
+#include "mozilla/Assertions.h"
+#include "mozilla/Types.h"
+
+#include <stdio.h>
+
+#include "jit/riscv64/constant/Base-constant-riscv.h"
+#include "jit/riscv64/constant/Constant-riscv-a.h"
+#include "jit/riscv64/constant/Constant-riscv-c.h"
+#include "jit/riscv64/constant/Constant-riscv-d.h"
+#include "jit/riscv64/constant/Constant-riscv-f.h"
+#include "jit/riscv64/constant/Constant-riscv-i.h"
+#include "jit/riscv64/constant/Constant-riscv-m.h"
+#include "jit/riscv64/constant/Constant-riscv-v.h"
+#include "jit/riscv64/constant/Constant-riscv-zicsr.h"
+#include "jit/riscv64/constant/Constant-riscv-zifencei.h"
+
+namespace js {
+namespace jit {
+
+// A reasonable (ie, safe) buffer size for the disassembly of a single
+// instruction.
+const int ReasonableBufferSize = 256;
+
+// Difference between address of current opcode and value read from pc
+// register.
+static constexpr int kPcLoadDelta = 4;
+
+// Bits available for offset field in branches
+static constexpr int kBranchOffsetBits = 13;
+
+// Bits available for offset field in jump
+static constexpr int kJumpOffsetBits = 21;
+
+// Bits available for offset field in compresed jump
+static constexpr int kCJalOffsetBits = 12;
+
+// Bits available for offset field in 4 branch
+static constexpr int kCBranchOffsetBits = 9;
+
+// Max offset for b instructions with 12-bit offset field (multiple of 2)
+static constexpr int kMaxBranchOffset = (1 << (kBranchOffsetBits - 1)) - 1;
+
+static constexpr int kCBranchOffset = (1 << (kCBranchOffsetBits - 1)) - 1;
+// Max offset for jal instruction with 20-bit offset field (multiple of 2)
+static constexpr int kMaxJumpOffset = (1 << (kJumpOffsetBits - 1)) - 1;
+
+static constexpr int kCJumpOffset = (1 << (kCJalOffsetBits - 1)) - 1;
+
+static constexpr int kTrampolineSlotsSize = 2 * kInstrSize;
+
+static_assert(kCJalOffsetBits == kOffset12);
+static_assert(kCBranchOffsetBits == kOffset9);
+static_assert(kJumpOffsetBits == kOffset21);
+static_assert(kBranchOffsetBits == kOffset13);
+// Vector as used by the original code to allow for minimal modification.
+// Functions exactly like a character array with helper methods.
+}  // namespace jit
+}  // namespace js
+
+#endif  // jit_riscv64_constant_Constant_riscv64_h