| # Copyright (C) 2011-2018 Apple Inc. All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # |
| # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| # THE POSSIBILITY OF SUCH DAMAGE. |
| |
| require "config" |
| require "set" |
| |
| # Interesting invariant, which we take advantage of: branching instructions |
| # always begin with "b", and no non-branching instructions begin with "b". |
| # Terminal instructions are "jmp" and "ret". |
| |
| MACRO_INSTRUCTIONS = |
| [ |
| "emit", |
| "addi", |
| "andi", |
| "lshifti", |
| "lshiftp", |
| "lshiftq", |
| "muli", |
| "negi", |
| "negp", |
| "negq", |
| "noti", |
| "ori", |
| "rshifti", |
| "urshifti", |
| "rshiftp", |
| "urshiftp", |
| "rshiftq", |
| "urshiftq", |
| "subi", |
| "xori", |
| "loadi", |
| "loadis", |
| "loadb", |
| "loadbs", |
| "loadbsp", |
| "loadh", |
| "loadhs", |
| "storei", |
| "storeb", |
| "loadd", |
| "moved", |
| "stored", |
| "addd", |
| "divd", |
| "subd", |
| "muld", |
| "sqrtd", |
| "ci2d", |
| "fii2d", # usage: fii2d <gpr with least significant bits>, <gpr with most significant bits>, <fpr> |
| "fd2ii", # usage: fd2ii <fpr>, <gpr with least significant bits>, <gpr with most significant bits> |
| "fq2d", |
| "fd2q", |
| "bdeq", |
| "bdneq", |
| "bdgt", |
| "bdgteq", |
| "bdlt", |
| "bdlteq", |
| "bdequn", |
| "bdnequn", |
| "bdgtun", |
| "bdgtequn", |
| "bdltun", |
| "bdltequn", |
| "btd2i", |
| "td2i", |
| "bcd2i", |
| "movdz", |
| "pop", |
| "push", |
| "move", |
| "sxi2q", |
| "zxi2q", |
| "nop", |
| "bieq", |
| "bineq", |
| "bia", |
| "biaeq", |
| "bib", |
| "bibeq", |
| "bigt", |
| "bigteq", |
| "bilt", |
| "bilteq", |
| "bbeq", |
| "bbneq", |
| "bba", |
| "bbaeq", |
| "bbb", |
| "bbbeq", |
| "bbgt", |
| "bbgteq", |
| "bblt", |
| "bblteq", |
| "btis", |
| "btiz", |
| "btinz", |
| "btbs", |
| "btbz", |
| "btbnz", |
| "jmp", |
| "baddio", |
| "baddis", |
| "baddiz", |
| "baddinz", |
| "bsubio", |
| "bsubis", |
| "bsubiz", |
| "bsubinz", |
| "bmulio", |
| "bmulis", |
| "bmuliz", |
| "bmulinz", |
| "borio", |
| "boris", |
| "boriz", |
| "borinz", |
| "break", |
| "call", |
| "ret", |
| "cbeq", |
| "cbneq", |
| "cba", |
| "cbaeq", |
| "cbb", |
| "cbbeq", |
| "cbgt", |
| "cbgteq", |
| "cblt", |
| "cblteq", |
| "cieq", |
| "cineq", |
| "cia", |
| "ciaeq", |
| "cib", |
| "cibeq", |
| "cigt", |
| "cigteq", |
| "cilt", |
| "cilteq", |
| "tis", |
| "tiz", |
| "tinz", |
| "tbs", |
| "tbz", |
| "tbnz", |
| "tps", |
| "tpz", |
| "tpnz", |
| "peek", |
| "poke", |
| "bpeq", |
| "bpneq", |
| "bpa", |
| "bpaeq", |
| "bpb", |
| "bpbeq", |
| "bpgt", |
| "bpgteq", |
| "bplt", |
| "bplteq", |
| "addp", |
| "mulp", |
| "andp", |
| "orp", |
| "subp", |
| "xorp", |
| "loadp", |
| "cpeq", |
| "cpneq", |
| "cpa", |
| "cpaeq", |
| "cpb", |
| "cpbeq", |
| "cpgt", |
| "cpgteq", |
| "cplt", |
| "cplteq", |
| "storep", |
| "btps", |
| "btpz", |
| "btpnz", |
| "baddpo", |
| "baddps", |
| "baddpz", |
| "baddpnz", |
| "tqs", |
| "tqz", |
| "tqnz", |
| "bqeq", |
| "bqneq", |
| "bqa", |
| "bqaeq", |
| "bqb", |
| "bqbeq", |
| "bqgt", |
| "bqgteq", |
| "bqlt", |
| "bqlteq", |
| "addq", |
| "mulq", |
| "andq", |
| "orq", |
| "subq", |
| "xorq", |
| "loadq", |
| "cqeq", |
| "cqneq", |
| "cqa", |
| "cqaeq", |
| "cqb", |
| "cqbeq", |
| "cqgt", |
| "cqgteq", |
| "cqlt", |
| "cqlteq", |
| "storeq", |
| "btqs", |
| "btqz", |
| "btqnz", |
| "baddqo", |
| "baddqs", |
| "baddqz", |
| "baddqnz", |
| "bo", |
| "bs", |
| "bz", |
| "bnz", |
| "leai", |
| "leap", |
| "memfence", |
| "tagReturnAddress", |
| "untagReturnAddress", |
| "removeCodePtrTag" |
| ] |
| |
| X86_INSTRUCTIONS = |
| [ |
| "cdqi", |
| "idivi" |
| ] |
| |
| ARM_INSTRUCTIONS = |
| [ |
| "clrbp", |
| "mvlbl", |
| "globaladdr" |
| ] |
| |
| ARM64_INSTRUCTIONS = |
| [ |
| "pcrtoaddr", # Address from PC relative offset - adr instruction |
| "nopFixCortexA53Err835769", # nop on Cortex-A53 (nothing otherwise) |
| "globaladdr" |
| ] |
| |
| RISC_INSTRUCTIONS = |
| [ |
| "smulli", # Multiply two 32-bit words and produce a 64-bit word |
| "addis", # Add integers and set a flag. |
| "subis", # Same, but for subtraction. |
| "oris", # Same, but for bitwise or. |
| "addps" # addis but for pointers. |
| ] |
| |
| MIPS_INSTRUCTIONS = |
| [ |
| "la", |
| "movz", |
| "movn", |
| "setcallreg", |
| "slt", |
| "sltu", |
| "pichdr" |
| ] |
| |
| CXX_INSTRUCTIONS = |
| [ |
| "cloopCrash", # no operands |
| "cloopCallJSFunction", # operands: callee |
| "cloopCallNative", # operands: callee |
| "cloopCallSlowPath", # operands: callTarget, currentFrame, currentPC |
| "cloopCallSlowPathVoid", # operands: callTarget, currentFrame, currentPC |
| |
| # For debugging only: |
| # Takes no operands but simply emits whatever follows in // comments as |
| # a line of C++ code in the generated LLIntAssembly.h file. This can be |
| # used to insert instrumentation into the interpreter loop to inspect |
| # variables of interest. Do not leave these instructions in production |
| # code. |
| "cloopDo", # no operands |
| ] |
| |
| INSTRUCTIONS = MACRO_INSTRUCTIONS + X86_INSTRUCTIONS + ARM_INSTRUCTIONS + ARM64_INSTRUCTIONS + RISC_INSTRUCTIONS + MIPS_INSTRUCTIONS + CXX_INSTRUCTIONS |
| |
| INSTRUCTION_SET = INSTRUCTIONS.to_set |
| |
| def isBranch(instruction) |
| instruction =~ /^b/ |
| end |
| |
| def hasFallThrough(instruction) |
| instruction != "ret" and instruction != "jmp" |
| end |
| |
| def isPowerOfTwo(value) |
| return false if value <= 0 |
| (value & (value - 1)).zero? |
| end |
