================ @@ -0,0 +1,296 @@ +//===-- xray_riscv.cpp ----------------------------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is a part of XRay, a dynamic runtime instrumentation system. +// +// Implementation of riscv-specific routines (32- and 64-bit). +// +//===----------------------------------------------------------------------===// +#include "sanitizer_common/sanitizer_common.h" +#include "xray_defs.h" +#include "xray_interface_internal.h" +#include <atomic> + +namespace __xray { + +// The machine codes for some instructions used in runtime patching. +enum PatchOpcodes : uint32_t { + PO_ADDI = 0x00000013, // addi rd, rs1, imm + PO_ADD = 0x00000033, // add rd, rs1, rs2 + PO_SW = 0x00002023, // sw rt, base(offset) + PO_SD = 0x00003023, // sd rt, base(offset) + PO_LUI = 0x00000037, // lui rd, imm + PO_ORI = 0x00006013, // ori rd, rs1, imm + PO_OR = 0x00006033, // or rd, rs1, rs2 + PO_SLLI = 0x00001013, // slli rd, rs, shamt + PO_SRLI = 0x00005013, // srli rd, rs, shamt + PO_JALR = 0x00000067, // jalr rs + PO_LW = 0x00002003, // lw rd, base(offset) + PO_LD = 0x00003003, // ld rd, base(offset) + PO_J = 0x0000006f, // jal #n_bytes + PO_NOP = 0x00000013, // nop - pseduo-instruction, same as addi x0, x0, 0 ---------------- jrtc27 wrote:
"pseudo", though I don't think you need to explain what a nop is, the only thing worth noting is what it's a (canonical) alias for. https://github.com/llvm/llvm-project/pull/117368 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
