531 lines
16 KiB
C++
531 lines
16 KiB
C++
/*
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* Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "jvmti.h"
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#include "agent_common.hpp"
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#include "JVMTITools.hpp"
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extern "C" {
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#define PASSED 0
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#define STATUS_FAILED 2
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typedef enum {
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opc_iinc = 132,
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opc_tableswitch = 170,
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opc_lookupswitch = 171,
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opc_wide = 196
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} opcode_type;
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typedef struct {
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const char *name;
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unsigned char code;
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int length;
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} opcode_info;
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static jvmtiEnv *jvmti = nullptr;
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static jvmtiCapabilities caps;
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static jvmtiEventCallbacks callbacks;
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static jint result = PASSED;
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static jboolean printdump = JNI_FALSE;
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static int eventsCount = 0;
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static opcode_info opcodes[] = {
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{ "nop", 0, 1 },
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{ "aconst_null", 1, 1 },
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{ "iconst_m1", 2, 1 },
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{ "iconst_0", 3, 1 },
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{ "iconst_1", 4, 1 },
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{ "iconst_2", 5, 1 },
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{ "iconst_3", 6, 1 },
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{ "iconst_4", 7, 1 },
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{ "iconst_5", 8, 1 },
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{ "lconst_0", 9, 1 },
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{ "lconst_1", 10, 1 },
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{ "fconst_0", 11, 1 },
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{ "fconst_1", 12, 1 },
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{ "fconst_2", 13, 1 },
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{ "dconst_0", 14, 1 },
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{ "dconst_1", 15, 1 },
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{ "bipush", 16, 2 },
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{ "sipush", 17, 3 },
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{ "ldc", 18, 2 },
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{ "ldc_w", 19, 3 },
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{ "ldc2_w", 20, 3 },
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{ "iload", 21, 2 },
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{ "lload", 22, 2 },
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{ "fload", 23, 2 },
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{ "dload", 24, 2 },
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{ "aload", 25, 2 },
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{ "iload_0", 26, 1 },
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{ "iload_1", 27, 1 },
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{ "iload_2", 28, 1 },
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{ "iload_3", 29, 1 },
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{ "lload_0", 30, 1 },
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{ "lload_1", 31, 1 },
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{ "lload_2", 32, 1 },
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{ "lload_3", 33, 1 },
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{ "fload_0", 34, 1 },
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{ "fload_1", 35, 1 },
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{ "fload_2", 36, 1 },
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{ "fload_3", 37, 1 },
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{ "dload_0", 38, 1 },
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{ "dload_1", 39, 1 },
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{ "dload_2", 40, 1 },
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{ "dload_3", 41, 1 },
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{ "aload_0", 42, 1 },
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{ "aload_1", 43, 1 },
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{ "aload_2", 44, 1 },
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{ "aload_3", 45, 1 },
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{ "iaload", 46, 1 },
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{ "laload", 47, 1 },
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{ "faload", 48, 1 },
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{ "daload", 49, 1 },
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{ "aaload", 50, 1 },
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{ "baload", 51, 1 },
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{ "caload", 52, 1 },
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{ "saload", 53, 1 },
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{ "istore", 54, 2 },
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{ "lstore", 55, 2 },
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{ "fstore", 56, 2 },
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{ "dstore", 57, 2 },
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{ "astore", 58, 2 },
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{ "istore_0", 59, 1 },
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{ "istore_1", 60, 1 },
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{ "istore_2", 61, 1 },
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{ "istore_3", 62, 1 },
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{ "lstore_0", 63, 1 },
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{ "lstore_1", 64, 1 },
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{ "lstore_2", 65, 1 },
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{ "lstore_3", 66, 1 },
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{ "fstore_0", 67, 1 },
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{ "fstore_1", 68, 1 },
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{ "fstore_2", 69, 1 },
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{ "fstore_3", 70, 1 },
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{ "dstore_0", 71, 1 },
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{ "dstore_1", 72, 1 },
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{ "dstore_2", 73, 1 },
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{ "dstore_3", 74, 1 },
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{ "astore_0", 75, 1 },
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{ "astore_1", 76, 1 },
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{ "astore_2", 77, 1 },
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{ "astore_3", 78, 1 },
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{ "iastore", 79, 1 },
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{ "lastore", 80, 1 },
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{ "fastore", 81, 1 },
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{ "dastore", 82, 1 },
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{ "aastore", 83, 1 },
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{ "bastore", 84, 1 },
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{ "castore", 85, 1 },
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{ "sastore", 86, 1 },
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{ "pop", 87, 1 },
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{ "pop2", 88, 1 },
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{ "dup", 89, 1 },
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{ "dup_x1", 90, 1 },
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{ "dup_x2", 91, 1 },
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{ "dup2", 92, 1 },
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{ "dup2_x1", 93, 1 },
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{ "dup2_x2", 94, 1 },
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{ "swap", 95, 1 },
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{ "iadd", 96, 1 },
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{ "ladd", 97, 1 },
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{ "fadd", 98, 1 },
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{ "dadd", 99, 1 },
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{ "isub", 100, 1 },
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{ "lsub", 101, 1 },
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{ "fsub", 102, 1 },
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{ "dsub", 103, 1 },
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{ "imul", 104, 1 },
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{ "lmul", 105, 1 },
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{ "fmul", 106, 1 },
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{ "dmul", 107, 1 },
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{ "idiv", 108, 1 },
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{ "ldiv", 109, 1 },
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{ "fdiv", 110, 1 },
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{ "ddiv", 111, 1 },
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{ "irem", 112, 1 },
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{ "lrem", 113, 1 },
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{ "frem", 114, 1 },
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{ "drem", 115, 1 },
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{ "ineg", 116, 1 },
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{ "lneg", 117, 1 },
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{ "fneg", 118, 1 },
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{ "dneg", 119, 1 },
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{ "ishl", 120, 1 },
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{ "lshl", 121, 1 },
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{ "ishr", 122, 1 },
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{ "lshr", 123, 1 },
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{ "iushr", 124, 1 },
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{ "lushr", 125, 1 },
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{ "iand", 126, 1 },
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{ "land", 127, 1 },
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{ "ior", 128, 1 },
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{ "lor", 129, 1 },
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{ "ixor", 130, 1 },
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{ "lxor", 131, 1 },
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{ "iinc", 132, 3 },
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{ "i2l", 133, 1 },
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{ "i2f", 134, 1 },
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{ "i2d", 135, 1 },
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{ "l2i", 136, 1 },
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{ "l2f", 137, 1 },
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{ "l2d", 138, 1 },
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{ "f2i", 139, 1 },
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{ "f2l", 140, 1 },
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{ "f2d", 141, 1 },
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{ "d2i", 142, 1 },
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{ "d2l", 143, 1 },
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{ "d2f", 144, 1 },
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{ "i2b", 145, 1 },
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{ "i2c", 146, 1 },
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{ "i2s", 147, 1 },
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{ "lcmp", 148, 1 },
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{ "fcmpl", 149, 1 },
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{ "fcmpg", 150, 1 },
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{ "dcmpl", 151, 1 },
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{ "dcmpg", 152, 1 },
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{ "ifeq", 153, 3 },
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{ "ifne", 154, 3 },
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{ "iflt", 155, 3 },
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{ "ifge", 156, 3 },
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{ "ifgt", 157, 3 },
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{ "ifle", 158, 3 },
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{ "if_icmpeq", 159, 3 },
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{ "if_icmpne", 160, 3 },
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{ "if_icmplt", 161, 3 },
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{ "if_icmpge", 162, 3 },
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{ "if_icmpgt", 163, 3 },
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{ "if_icmple", 164, 3 },
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{ "if_acmpeq", 165, 3 },
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{ "if_acmpne", 166, 3 },
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{ "goto", 167, 3 },
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{ "jsr", 168, 3 },
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{ "ret", 169, 2 },
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{ "tableswitch", 170, 0 },
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{ "lookupswitch", 171, 0 },
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{ "ireturn", 172, 1 },
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{ "lreturn", 173, 1 },
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{ "freturn", 174, 1 },
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{ "dreturn", 175, 1 },
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{ "areturn", 176, 1 },
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{ "return", 177, 1 },
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{ "getstatic", 178, 3 },
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{ "putstatic", 179, 3 },
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{ "getfield", 180, 3 },
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{ "putfield", 181, 3 },
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{ "invokevirtual", 182, 3 },
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{ "invokespecial", 183, 3 },
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{ "invokestatic", 184, 3 },
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{ "invokeinterface", 185, 5 },
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{ "invokedynamic", 186, 5 },
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{ "new", 187, 3 },
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{ "newarray", 188, 2 },
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{ "anewarray", 189, 3 },
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{ "arraylength", 190, 1 },
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{ "athrow", 191, 1 },
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{ "checkcast", 192, 3 },
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{ "instanceof", 193, 3 },
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{ "monitorenter", 194, 1 },
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{ "monitorexit", 195, 1 },
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{ "wide", 196, 0 },
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{ "multianewarray", 197, 4 },
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{ "ifnull", 198, 3 },
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{ "ifnonnull", 199, 3 },
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{ "goto_w", 200, 5 },
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{ "jsr_w", 201, 5 },
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{ "breakpoint", 202, 1 },
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{ "impdep1", 254, 1 },
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{ "impdep2", 255, 1 }
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};
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jint get_u4(unsigned char *p) {
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return (jint)p[3] | ((jint)p[2]<<8) | ((jint)p[1]<<16) | ((jint)p[0]<<24);
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}
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jboolean checkCode(jint bytecodeCount, unsigned char *buf) {
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unsigned char code;
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jint pc, cur_pc, length;
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size_t i;
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for (pc = 0; pc >= 0 && pc < bytecodeCount; pc += length) {
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code = buf[pc];
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for (i = 0; i < sizeof(opcodes)/sizeof(opcode_info); i++) {
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if (code == opcodes[i].code) {
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switch (code) {
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case opc_wide:
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length = (buf[pc + 1] == opc_iinc ? 6 : 4);
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break;
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case opc_lookupswitch:
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cur_pc = (pc + 4) & (~3);
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length = cur_pc - pc + 8;
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length += get_u4(buf + cur_pc + 4) * 8;
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break;
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case opc_tableswitch:
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cur_pc = (pc + 4) & (~3);
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length = cur_pc - pc + 12;
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length += (get_u4(buf + cur_pc + 8) -
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get_u4(buf + cur_pc + 4) + 1) * 4;
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break;
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default:
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length = opcodes[i].length;
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break;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> %4d: %s (%d)\n",
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pc, opcodes[i].name, length);
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}
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if (length <= 0) {
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printf("Invalid length: %d for opcode \"%s\" (%d)\n",
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length, opcodes[i].name, code);
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return JNI_FALSE;
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}
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break;
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}
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}
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if (i >= sizeof(opcodes)/sizeof(opcode_info)) {
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/* opcode not found */
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printf("Non-standard opcode: %d (0x%x)\n", code, code);
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return JNI_FALSE;
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}
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}
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return JNI_TRUE;
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}
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void JNICALL ClassPrepare(jvmtiEnv *jvmti_env, JNIEnv *env,
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jthread thr, jclass cls) {
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jvmtiError err;
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char *sig, *name, *msig;
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jint mcount;
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jmethodID *methods;
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jboolean isNative;
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jint bytecodeCount;
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unsigned char *bytecodes;
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jint i;
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sig = nullptr;
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err = jvmti_env->GetClassSignature(cls, &sig, nullptr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetClassSignature#%d) unexpected error: %s (%d)\n",
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eventsCount, TranslateError(err), err);
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result = STATUS_FAILED;
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return;
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}
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err = jvmti_env->GetClassMethods(cls, &mcount, &methods);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetClassMethods#%d) unexpected error: %s (%d)\n",
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eventsCount, TranslateError(err), err);
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result = STATUS_FAILED;
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return;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> [class prepare event #%d]", eventsCount);
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printf(" \"%s\"\n", sig);
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printf(">>> %d methods:\n", mcount);
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}
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for (i = 0; i < mcount; i++) {
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if (methods[i] == nullptr) {
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if (printdump == JNI_TRUE) {
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printf(" null");
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}
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} else {
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name = nullptr;
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msig = nullptr;
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bytecodes = nullptr;
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err = jvmti_env->GetMethodName(methods[i], &name, &msig, nullptr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetMethodName) unexpected error: %s (%d)\n",
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TranslateError(err), err);
|
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printf(" class: \"%s\"\n", sig);
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result = STATUS_FAILED;
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return;
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}
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isNative = JNI_TRUE;
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err = jvmti_env->IsMethodNative(methods[i], &isNative);
|
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if (err != JVMTI_ERROR_NONE) {
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printf("(IsMethodNative) unexpected error: %s (%d)\n",
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TranslateError(err), err);
|
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printf(" class: \"%s\"\n", sig);
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printf(" method = \"%s%s\"\n", name, msig);
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result = STATUS_FAILED;
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return;
|
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}
|
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if (isNative == JNI_TRUE) {
|
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if (printdump == JNI_TRUE) {
|
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printf(">>> \"%s%s\", native\n", name, msig);
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}
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} else {
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err = jvmti_env->GetBytecodes(methods[i],
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&bytecodeCount, &bytecodes);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetBytecodes#%d:%d) unexpected error: %s (%d)\n",
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eventsCount, i, TranslateError(err), err);
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result = STATUS_FAILED;
|
|
return;
|
|
} else {
|
|
if (printdump == JNI_TRUE) {
|
|
printf(">>> \"%s%s\", %d bytes\n",
|
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name, msig, bytecodeCount);
|
|
}
|
|
if (checkCode(bytecodeCount, bytecodes) == JNI_FALSE) {
|
|
printf(" class: \"%s\"\n", sig);
|
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printf(" method = \"%s%s\"\n", name, msig);
|
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result = STATUS_FAILED;
|
|
}
|
|
}
|
|
}
|
|
if (name != nullptr) {
|
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jvmti_env->Deallocate((unsigned char *)name);
|
|
}
|
|
if (msig != nullptr) {
|
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jvmti_env->Deallocate((unsigned char *)msig);
|
|
}
|
|
if (bytecodes != nullptr) {
|
|
jvmti_env->Deallocate(bytecodes);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (methods != nullptr) {
|
|
jvmti_env->Deallocate((unsigned char *)methods);
|
|
}
|
|
if (sig != nullptr) {
|
|
jvmti_env->Deallocate((unsigned char *)sig);
|
|
}
|
|
eventsCount++;
|
|
}
|
|
|
|
#ifdef STATIC_BUILD
|
|
JNIEXPORT jint JNICALL Agent_OnLoad_bytecodes003(JavaVM *jvm, char *options, void *reserved) {
|
|
return Agent_Initialize(jvm, options, reserved);
|
|
}
|
|
JNIEXPORT jint JNICALL Agent_OnAttach_bytecodes003(JavaVM *jvm, char *options, void *reserved) {
|
|
return Agent_Initialize(jvm, options, reserved);
|
|
}
|
|
JNIEXPORT jint JNI_OnLoad_bytecodes003(JavaVM *jvm, char *options, void *reserved) {
|
|
return JNI_VERSION_1_8;
|
|
}
|
|
#endif
|
|
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
|
|
jvmtiError err;
|
|
jint res;
|
|
|
|
if (options != nullptr && strcmp(options, "printdump") == 0) {
|
|
printdump = JNI_TRUE;
|
|
}
|
|
|
|
res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
|
|
if (res != JNI_OK || jvmti == nullptr) {
|
|
printf("Wrong result of a valid call to GetEnv!\n");
|
|
return JNI_ERR;
|
|
}
|
|
|
|
err = jvmti->GetCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("(GetCapabilities) unexpected error: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
err = jvmti->GetCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("(GetCapabilities) unexpected error: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
err = jvmti->GetPotentialCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
err = jvmti->AddCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("(AddCapabilities) unexpected error: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
err = jvmti->GetCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("(GetCapabilities) unexpected error: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
if (caps.can_get_bytecodes) {
|
|
callbacks.ClassPrepare = &ClassPrepare;
|
|
err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("(SetEventCallbacks) unexpected error: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
|
|
JVMTI_EVENT_CLASS_PREPARE, nullptr);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Failed to enable ClassPrepare: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
} else {
|
|
printf("Warning: GetBytecodes is not implemented\n");
|
|
}
|
|
|
|
return JNI_OK;
|
|
}
|
|
|
|
JNIEXPORT jint JNICALL
|
|
Java_nsk_jvmti_GetBytecodes_bytecodes003_check(JNIEnv *env, jclass cls) {
|
|
jvmtiError err;
|
|
|
|
if (jvmti == nullptr) {
|
|
printf("JVMTI client was not properly loaded!\n");
|
|
return STATUS_FAILED;
|
|
}
|
|
|
|
if (caps.can_get_bytecodes) {
|
|
err = jvmti->SetEventNotificationMode(JVMTI_DISABLE,
|
|
JVMTI_EVENT_CLASS_PREPARE, nullptr);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Failed to disable JVMTI_EVENT_CLASS_PREPARE: %s (%d)\n",
|
|
TranslateError(err), err);
|
|
result = STATUS_FAILED;
|
|
}
|
|
}
|
|
|
|
if (printdump == JNI_TRUE) {
|
|
printf("Total number of class prepare events: %d\n", eventsCount);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
}
|