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author | Mark <mteffeteller@google.com> | 2023-06-21 23:30:18 +0000 |
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committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | 2023-06-21 23:30:18 +0000 |
commit | 54819157eaa66e14f2c68b54609bd6bfa360b708 (patch) | |
tree | 68cf332a40b94b2d28b256b19b916f99220bb0c4 /src/main/java/com/code_intelligence/jazzer/runtime/TraceDivHooks.java | |
parent | ba37c2e361c2ba91bacc47fcae5383c52e50f6be (diff) | |
parent | e73be1680dae58cb83d869104def1c59102d59b2 (diff) | |
download | jazzer-api-54819157eaa66e14f2c68b54609bd6bfa360b708.tar.gz |
Sync jazzer in AOSP with upstream repo (new SHA: 30decf81a147c66fa5a098072c38ab6924ba0aa6) am: 9350e0ab03 am: 99d9a79746 am: 34a8e5c8aa am: e73be1680d
Original change: https://android-review.googlesource.com/c/platform/external/jazzer-api/+/2627336
Change-Id: I1b97ed5cdcf2adda4d443148cc0d447974e51785
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
Diffstat (limited to 'src/main/java/com/code_intelligence/jazzer/runtime/TraceDivHooks.java')
-rw-r--r-- | src/main/java/com/code_intelligence/jazzer/runtime/TraceDivHooks.java | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/main/java/com/code_intelligence/jazzer/runtime/TraceDivHooks.java b/src/main/java/com/code_intelligence/jazzer/runtime/TraceDivHooks.java new file mode 100644 index 00000000..c4991eb5 --- /dev/null +++ b/src/main/java/com/code_intelligence/jazzer/runtime/TraceDivHooks.java @@ -0,0 +1,47 @@ +// Copyright 2021 Code Intelligence GmbH +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package com.code_intelligence.jazzer.runtime; + +import com.code_intelligence.jazzer.api.HookType; +import com.code_intelligence.jazzer.api.MethodHook; +import java.lang.invoke.MethodHandle; + +@SuppressWarnings("unused") +final public class TraceDivHooks { + @MethodHook(type = HookType.BEFORE, targetClassName = "java.lang.Integer", + targetMethod = "divideUnsigned", targetMethodDescriptor = "(II)I") + @MethodHook(type = HookType.BEFORE, targetClassName = "java.lang.Integer", + targetMethod = "remainderUnsigned", targetMethodDescriptor = "(II)I") + public static void + intUnsignedDivide(MethodHandle method, Object thisObject, Object[] arguments, int hookId) { + // Since the arguments are to be treated as unsigned integers we need a long to fit the + // divisor. + TraceDataFlowNativeCallbacks.traceDivLong(Integer.toUnsignedLong((int) arguments[1]), hookId); + } + + @MethodHook(type = HookType.BEFORE, targetClassName = "java.lang.Long", + targetMethod = "divideUnsigned", targetMethodDescriptor = "(JJ)J") + @MethodHook(type = HookType.BEFORE, targetClassName = "java.lang.Long", + targetMethod = "remainderUnsigned", targetMethodDescriptor = "(JJ)J") + public static void + longUnsignedDivide(MethodHandle method, Object thisObject, Object[] arguments, int hookId) { + long divisor = (long) arguments[1]; + // Run the callback only if the divisor, which is regarded as an unsigned long, fits in a + // signed long, i.e., does not have the sign bit set. + if (divisor > 0) { + TraceDataFlowNativeCallbacks.traceDivLong(divisor, hookId); + } + } +} |