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Code Issues Releases Wiki Activity

GP-0: Fix tests (handle null ctxVals). Remove syserr.

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This commit is contained in:
Dan 2024-01-08 09:30:50 -05:00
parent 78e2ea086d
commit bccccac13e
1 changed files with 21 additions and 12 deletions
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29
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/disassemble/ReDisassembler.java
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@ -102,8 +102,13 @@ public class ReDisassembler {
protected ReDisState addSeed(Address seed) {
RegisterValue seedCtx = programContext.getRegisterValue(ctxRegister, seed);
try {
if (seedCtx == null) {
tempContext.remove(seed, seed, ctxRegister);
}
else {
tempContext.setRegisterValue(seed, seed, seedCtx);
}
}
catch (ContextChangeException e) {
throw new AssertionError(e);
}
@ -147,17 +152,19 @@ public class ReDisassembler {
public void writeContext() {
for (Address addr : ctxAddrs) {
RegisterValue curCtxVal = programContext.getRegisterValue(ctxRegister, addr);
System.err.println("Writing context at " + addr);
System.err.println(" Cur: " + curCtxVal);
RegisterValue newCtxVal = tempContext.getRegisterValue(ctxRegister, addr);
System.err.println(" New: " + newCtxVal);
if (curCtxVal.equals(newCtxVal)) {
if (Objects.equals(curCtxVal, newCtxVal)) {
continue;
}
try {
if (newCtxVal == null) {
programContext.remove(addr, addr, ctxRegister);
}
else {
programContext.setRegisterValue(addr, addr, newCtxVal);
}
}
catch (ContextChangeException e) {
Msg.error(this, "Cannot write context at " + addr + ": " + e);
}
@ -181,9 +188,14 @@ public class ReDisassembler {
}
protected void recordContext(Address to) {
RegisterValue ctxValue = disassemblerContext.getRegisterValue(ctxRegister);
try {
state.tempContext.setRegisterValue(to, to,
disassemblerContext.getRegisterValue(ctxRegister));
if (ctxValue == null) {
state.tempContext.remove(to, to, ctxRegister);
}
else {
state.tempContext.setRegisterValue(to, to, ctxValue);
}
state.ctxAddrs.add(to);
}
catch (ContextChangeException e) {
@ -197,8 +209,6 @@ public class ReDisassembler {
PseudoInstruction instruction = new PseudoInstruction(program, address, prototype,
memBuffer, ctx);
instruction.setInstructionBlock(block);
System.err.println(
" " + instruction + " with " + instruction.getRegisterValue(ctxRegister));
return lastInstruction = instruction;
}
@ -235,11 +245,10 @@ public class ReDisassembler {
MemBuffer buffer = state.createBuffer(flow.to);
RegisterValue newCtxVal = disassemblerContext.getRegisterValue(ctxRegister);
RegisterValue curCtxVal = programContext.getRegisterValue(ctxRegister, flow.to);
if (newCtxVal.equals(curCtxVal) && flow.type != FlowType.SEED) {
if (Objects.equals(newCtxVal, curCtxVal) && flow.type != FlowType.SEED) {
// No need to re-disassemble if context has not changed.
return null;
}
System.err.println("Re-disassembling " + flow + " with " + newCtxVal);
ReDisassemblerContext ctx = new ReDisassemblerContext(state, flow);
try {
InstructionPrototype prototype = language.parse(buffer, ctx, false);