From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/jit/riscv64/constant/Constant-riscv64.h | 68 ++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 js/src/jit/riscv64/constant/Constant-riscv64.h (limited to 'js/src/jit/riscv64/constant/Constant-riscv64.h') 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 + +#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 -- cgit v1.2.3