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GP-1187: Wrote test case demonstrating the issue.

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Dan 2021-08-05 11:07:49 -04:00
parent f839d34fa9
commit 3e63efc670
1 changed files with 27 additions and 0 deletions
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27
Ghidra/Debug/Framework-TraceModeling/src/test/java/ghidra/pcode/exec/trace/TracePcodeEmulatorTest.java
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@ -705,4 +705,31 @@ public class TracePcodeEmulatorTest extends AbstractGhidraHeadlessIntegrationTes
TraceSleighUtils.evaluate("RAX", tb.trace, 1, thread, 0)); TraceSleighUtils.evaluate("RAX", tb.trace, 1, thread, 0));
} }
} }
@Test
public void testCachedReadAfterSmallWrite() throws Throwable {
try (ToyDBTraceBuilder tb = new ToyDBTraceBuilder("Test", "x86:LE:64:default")) {
TraceThread thread = initTrace(tb,
List.of(
"RIP = 0x00400000;",
"RSP = 0x00110000;",
"RAX = 0x12345678;"),
List.of(
"XOR AH, AH",
"MOV RCX, RAX"));
TracePcodeEmulator emu = new TracePcodeEmulator(tb.trace, 0);
PcodeThread<byte[]> emuThread = emu.newThread(thread.getPath());
emuThread.overrideContextWithDefault();
emuThread.stepInstruction();
emuThread.stepInstruction();
try (UndoableTransaction tid = tb.startTransaction()) {
emu.writeDown(tb.trace, 1, 1, false);
}
assertEquals(BigInteger.valueOf(0x12340078),
TraceSleighUtils.evaluate("RAX", tb.trace, 1, thread, 0));
}
}
} }