disassembler_mips.cc revision 2cbaccb67e22c0b313a9785bfc65bcb4b25d0676
160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes/* 260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * Copyright (C) 2012 The Android Open Source Project 360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * 460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * you may not use this file except in compliance with the License. 660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * You may obtain a copy of the License at 760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * 860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * 1060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * Unless required by applicable law or agreed to in writing, software 1160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 1260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * See the License for the specific language governing permissions and 1460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes * limitations under the License. 1560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes */ 1660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 1760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes#include "disassembler_mips.h" 1860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 1960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes#include <iostream> 2060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 2107ed66b5ae659c452cbe1ab20c3dbf1d6f546461Elliott Hughes#include "base/logging.h" 22e222ee0b794f941af4fb1b32fb8224e32942ea7bElliott Hughes#include "base/stringprintf.h" 2360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes#include "thread.h" 2460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 2560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesnamespace art { 2660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesnamespace mips { 2760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 2860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstruct MipsInstruction { 2960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes uint32_t mask; 3060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes uint32_t value; 3160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes const char* name; 3260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes const char* args_fmt; 3360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 3460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes bool Matches(uint32_t instruction) const { 3560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes return (instruction & mask) == value; 3660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 3760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes}; 3860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 3960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kOpcodeShift = 26; 4060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 4160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kCop1 = (17 << kOpcodeShift); 4260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 4360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kITypeMask = (0x3f << kOpcodeShift); 4460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kJTypeMask = (0x3f << kOpcodeShift); 4560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kRTypeMask = ((0x3f << kOpcodeShift) | (0x3f)); 4660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kSpecial2Mask = (0x3f << kOpcodeShift); 4760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const uint32_t kFpMask = kRTypeMask; 4860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 4960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic const MipsInstruction gMipsInstructions[] = { 5060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // "sll r0, r0, 0" is the canonical "nop", used in delay slots. 5160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 0xffffffff, 0, "nop", "" }, 5260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 5360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // R-type instructions. 5460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 0, "sll", "DTA", }, 5560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 1, movci 5660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 2, "srl", "DTA", }, 5760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 3, "sra", "DTA", }, 5860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 4, "sllv", "DTS", }, 5960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 6, "srlv", "DTS", }, 6060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 7, "srav", "DTS", }, 6160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 8, "jr", "S", }, 627934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { kRTypeMask | (0x1f << 11), 9 | (31 << 11), "jalr", "S", }, // rd = 31 is implicit. 637934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { kRTypeMask, 9, "jalr", "DS", }, // General case. 6460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask | (0x1f << 6), 10, "movz", "DST", }, 6560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask | (0x1f << 6), 11, "movn", "DST", }, 667934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { kRTypeMask, 12, "syscall", "", }, // TODO: code 677934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { kRTypeMask, 13, "break", "", }, // TODO: code 687934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { kRTypeMask, 15, "sync", "", }, // TODO: type 6960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 16, "mfhi", "D", }, 7060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 17, "mthi", "S", }, 7160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 18, "mflo", "D", }, 7260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 19, "mtlo", "S", }, 7360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 24, "mult", "ST", }, 7460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 25, "multu", "ST", }, 7560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 26, "div", "ST", }, 7660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 27, "divu", "ST", }, 7760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 32, "add", "DST", }, 7860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 33, "addu", "DST", }, 7960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 34, "sub", "DST", }, 8060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 35, "subu", "DST", }, 8160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 36, "and", "DST", }, 8260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 37, "or", "DST", }, 8360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 38, "xor", "DST", }, 8460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 39, "nor", "DST", }, 8560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 42, "slt", "DST", }, 8660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kRTypeMask, 43, "sltu", "DST", }, 8760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 48, tge 8860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 49, tgeu 8960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 50, tlt 9060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 51, tltu 9160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 52, teq 9260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // 0, 54, tne 9360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 9460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // SPECIAL2 9560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0x7ff, (28 << kOpcodeShift) | 2, "mul", "DST" }, 9660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0x7ff, (28 << kOpcodeShift) | 32, "clz", "DS" }, 9760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 0, "madd", "ST" }, 9860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 1, "maddu", "ST" }, 9960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 2, "mul", "DST" }, 10060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 4, "msub", "ST" }, 10160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 5, "msubu", "ST" }, 1027934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom { kSpecial2Mask | 0x3f, (28 << kOpcodeShift) | 0x3f, "sdbbp", "" }, // TODO: code 10360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 10460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // J-type instructions. 10560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kJTypeMask, 2 << kOpcodeShift, "j", "L" }, 10660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kJTypeMask, 3 << kOpcodeShift, "jal", "L" }, 10760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 10860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // I-type instructions. 10960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 4 << kOpcodeShift, "beq", "STB" }, 11060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 5 << kOpcodeShift, "bne", "STB" }, 11160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (1 << 16), "bgez", "SB" }, 11260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (0 << 16), "bltz", "SB" }, 11360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (2 << 16), "bltzl", "SB" }, 11460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (16 << 16), "bltzal", "SB" }, 11560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (18 << 16), "bltzall", "SB" }, 11660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 6 << kOpcodeShift | (0 << 16), "blez", "SB" }, 11760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask | (0x1f << 16), 7 << kOpcodeShift | (0 << 16), "bgtz", "SB" }, 11860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 11960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 0xffff0000, (4 << kOpcodeShift), "b", "B" }, 12060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 0xffff0000, (1 << kOpcodeShift) | (17 << 16), "bal", "B" }, 12160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 12260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 8 << kOpcodeShift, "addi", "TSi", }, 12360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 9 << kOpcodeShift, "addiu", "TSi", }, 12460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 10 << kOpcodeShift, "slti", "TSi", }, 12560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 11 << kOpcodeShift, "sltiu", "TSi", }, 12660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 12 << kOpcodeShift, "andi", "TSi", }, 12760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 13 << kOpcodeShift, "ori", "TSi", }, 12860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 14 << kOpcodeShift, "ori", "TSi", }, 12960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kITypeMask, 15 << kOpcodeShift, "lui", "TI", }, 13060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 131d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 32u << kOpcodeShift, "lb", "TO", }, 132d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 33u << kOpcodeShift, "lh", "TO", }, 133d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 35u << kOpcodeShift, "lw", "TO", }, 134d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 36u << kOpcodeShift, "lbu", "TO", }, 135d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 37u << kOpcodeShift, "lhu", "TO", }, 136d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 40u << kOpcodeShift, "sb", "TO", }, 137d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 41u << kOpcodeShift, "sh", "TO", }, 138d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 43u << kOpcodeShift, "sw", "TO", }, 139d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 49u << kOpcodeShift, "lwc1", "tO", }, 140d74e41b1cce5373aa24fd2fbea735173f6113d5aBrian Carlstrom { kITypeMask, 57u << kOpcodeShift, "swc1", "tO", }, 14160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 14260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // Floating point. 14360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask, kCop1 | 0, "add", "fdst" }, 14460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask, kCop1 | 1, "sub", "fdst" }, 14560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask, kCop1 | 2, "mul", "fdst" }, 14660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask, kCop1 | 3, "div", "fdst" }, 14760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 4, "sqrt", "fdst" }, 14860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 5, "abs", "fds" }, 14960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 6, "mov", "fds" }, 15060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 7, "neg", "fds" }, 15160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 8, "round.l", "fds" }, 15260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 9, "trunc.l", "fds" }, 15360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 10, "ceil.l", "fds" }, 15460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 11, "floor.l", "fds" }, 15560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 12, "round.w", "fds" }, 15660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 13, "trunc.w", "fds" }, 15760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 14, "ceil.w", "fds" }, 15860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 15, "floor.w", "fds" }, 15960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 32, "cvt.s", "fds" }, 16060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 33, "cvt.d", "fds" }, 16160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 36, "cvt.w", "fds" }, 16260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 37, "cvt.l", "fds" }, 16360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { kFpMask | (0x1f << 16), kCop1 | 38, "cvt.ps", "fds" }, 16460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes}; 16560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 16660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesstatic uint32_t ReadU32(const uint8_t* ptr) { 1674f8f04ad94e68d2307a955d6bd72415fc0852725jeffhao // We only support little-endian MIPS. 1684f8f04ad94e68d2307a955d6bd72415fc0852725jeffhao return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24); 16960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes} 17060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 1712cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstromsize_t DisassemblerMips::Dump(std::ostream& os, const uint8_t* instr_ptr) { 17260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes uint32_t instruction = ReadU32(instr_ptr); 17360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 1747934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom uint32_t rs = (instruction >> 21) & 0x1f; // I-type, R-type. 1757934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom uint32_t rt = (instruction >> 16) & 0x1f; // I-type, R-type. 1767934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom uint32_t rd = (instruction >> 11) & 0x1f; // R-type. 1777934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom uint32_t sa = (instruction >> 6) & 0x1f; // R-type. 17860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 17960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes std::string opcode; 18060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes std::ostringstream args; 18160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 18260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // TODO: remove this! 18360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes uint32_t op = (instruction >> 26) & 0x3f; 1847934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom uint32_t function = (instruction & 0x3f); // R-type. 18560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes opcode = StringPrintf("op=%d fn=%d", op, function); 18660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 18760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes for (size_t i = 0; i < arraysize(gMipsInstructions); ++i) { 18860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes if (gMipsInstructions[i].Matches(instruction)) { 18960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes opcode = gMipsInstructions[i].name; 19060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes for (const char* args_fmt = gMipsInstructions[i].args_fmt; *args_fmt; ++args_fmt) { 19160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes switch (*args_fmt) { 1927934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'A': // sa (shift amount). 19360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << sa; 19460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 1957934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'B': // Branch offset. 19660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 19760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes int32_t offset = static_cast<int16_t>(instruction & 0xffff); 19860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes offset <<= 2; 1997934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom offset += 4; // Delay slot. 2002cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstrom args << FormatInstructionPointer(instr_ptr + offset) 2012cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstrom << StringPrintf(" ; %+d", offset); 20260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 20360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 20460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 'D': args << 'r' << rd; break; 20560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 'd': args << 'f' << rd; break; 2067934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'f': // Floating point "fmt". 20760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 2087934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom size_t fmt = (instruction >> 21) & 0x7; // TODO: other fmts? 20960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes switch (fmt) { 21060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 0: opcode += ".s"; break; 21160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 1: opcode += ".d"; break; 21260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 4: opcode += ".w"; break; 21360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 5: opcode += ".l"; break; 21460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 6: opcode += ".ps"; break; 21560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes default: opcode += ".?"; break; 21660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 2177934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom continue; // No ", ". 21860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 21960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 2207934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'I': // Upper 16-bit immediate. 22160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << reinterpret_cast<void*>((instruction & 0xffff) << 16); 22260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 2237934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'i': // Sign-extended lower 16-bit immediate. 22460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << static_cast<int16_t>(instruction & 0xffff); 22560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 2267934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'L': // Jump label. 22760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 22860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes // TODO: is this right? 22960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes uint32_t instr_index = (instruction & 0x1ffffff); 23060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes uint32_t target = (instr_index << 2); 23160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes target |= (reinterpret_cast<uintptr_t>(instr_ptr + 4) & 0xf0000000); 23260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << reinterpret_cast<void*>(target); 23360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 23460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 2357934ac288acfb2552bb0b06ec1f61e5820d924a4Brian Carlstrom case 'O': // +x(rs) 23660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes { 23760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes int32_t offset = static_cast<int16_t>(instruction & 0xffff); 23860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << StringPrintf("%+d(r%d)", offset, rs); 23960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes if (rs == 17) { 24060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << " ; "; 241dd7624d2b9e599d57762d12031b10b89defc9807Ian Rogers Thread::DumpThreadOffset<4>(args, offset); 24260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 24360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 24460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 24560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 'S': args << 'r' << rs; break; 24660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 's': args << 'f' << rs; break; 24760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 'T': args << 'r' << rt; break; 24860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes case 't': args << 'f' << rt; break; 24960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 25060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes if (*(args_fmt + 1)) { 25160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes args << ", "; 25260454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 25360454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 25460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes break; 25560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 25660454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 25760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 2582cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstrom os << FormatInstructionPointer(instr_ptr) 2592cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstrom << StringPrintf(": %08x\t%-7s ", instruction, opcode.c_str()) 2602cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstrom << args.str() << '\n'; 261b23a7729cf7855fa05345d03a4d84111d5ec7172Ian Rogers return 4; 262b23a7729cf7855fa05345d03a4d84111d5ec7172Ian Rogers} 263b23a7729cf7855fa05345d03a4d84111d5ec7172Ian Rogers 26460454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughesvoid DisassemblerMips::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { 26560454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes for (const uint8_t* cur = begin; cur < end; cur += 4) { 2662cbaccb67e22c0b313a9785bfc65bcb4b25d0676Brian Carlstrom Dump(os, cur); 26760454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes } 26860454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes} 26960454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes 27060454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes} // namespace mips 27160454e8b48663e6e5cb4bb301cec5edf93f8ce54Elliott Hughes} // namespace art 272