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GP-1058: Added test which manifests the SUBPIECE problem.

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Dan
2021-07-28 10:26:39 -04:00
parent 3009ba9e87
commit 3e3b2f4062
1 changed files with 38 additions and 0 deletions
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38
Ghidra/Debug/Framework-TraceModeling/src/test/java/ghidra/pcode/exec/trace/TracePcodeEmulatorTest.java
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@@ -630,4 +630,42 @@ public class TracePcodeEmulatorTest extends AbstractGhidraHeadlessIntegrationTes
TraceSleighUtils.evaluate("r1", tb.trace, 1, thread, 0));
}
}
/**
* Test x86's MOVAPS instruction
*
* <p>
* This test hits a SUBPIECE instruction where the two input operands have differing sizes.
*/
@Test
public void testMOVAPS() throws Throwable {
try (ToyDBTraceBuilder tb = new ToyDBTraceBuilder("Test", "x86:LE:64:default")) {
Register pc = tb.language.getProgramCounter();
TraceThread thread = initTrace(tb,
List.of(
"RIP = 0x00400000;",
"RSP = 0x00110000;",
"*:8 0x00600000:8 = 0x0123456789abcdef;",
"*:8 0x00600008:8 = 0xfedcba9876543210;"),
List.of(
"MOVAPS XMM0, xmmword ptr [0x00600007]"));
TracePcodeEmulator emu = new TracePcodeEmulator(tb.trace, 0);
PcodeThread<byte[]> emuThread = emu.newThread(thread.getPath());
emuThread.overrideContextWithDefault();
emuThread.stepInstruction();
assertEquals(tb.addr(0x00400007), emuThread.getCounter());
assertArrayEquals(tb.arr(0x07, 0, 0x40, 0, 0, 0, 0, 0),
emuThread.getState().getVar(pc));
try (UndoableTransaction tid = tb.startTransaction()) {
emu.writeDown(tb.trace, 1, 1, false);
}
assertEquals(new BigInteger("0123456789abcdeffedcba9876543210", 16),
TraceSleighUtils.evaluate("XMM0", tb.trace, 1, thread, 0));
}
}
}