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Start adding SWI detail.
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parent
722743659b
commit
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@ -177,6 +177,8 @@ class ConcreteMachine:
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uint32_t address;
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uint32_t regs[10];
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uint32_t return_address;
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std::string value_name;
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std::string swi_name;
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};
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static std::vector<SWICall> swis;
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static uint32_t last_pc = 0;
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@ -221,11 +223,67 @@ class ConcreteMachine:
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(instruction & 0x0f00'0000) == 0x0f00'0000 &&
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executor_.registers().test(InstructionSet::ARM::Condition(instruction >> 28))
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) {
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swis.emplace_back();
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swis.back().opcode = instruction;
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swis.back().address = executor_.pc();
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swis.back().return_address = executor_.registers().pc(4);
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for(int c = 0; c < 10; c++) swis.back().regs[c] = executor_.registers()[uint32_t(c)];
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if(instruction & 0x2'0000) {
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swis.emplace_back();
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swis.back().opcode = instruction;
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swis.back().address = executor_.pc();
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swis.back().return_address = executor_.registers().pc(4);
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for(int c = 0; c < 10; c++) swis.back().regs[c] = executor_.registers()[uint32_t(c)];
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// Possibly capture more detail.
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uint32_t pointer = 0;
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switch(instruction & 0xfd'ffff) {
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case 0x41501:
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swis.back().swi_name = "MessageTrans_OpenFile";
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// R0: pointer to file descriptor; R1: pointer to filename; R2: pointer to hold file data.
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// (R0 and R1 are in the RMA if R2 = 0)
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pointer = executor_.registers()[1];
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break;
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case 0x4028a:
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swis.back().swi_name = "Podule_EnumerateChunksWithInfo";
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break;
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case 0x0d:
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swis.back().swi_name = "OS_Find";
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break;
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case 0x23:
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swis.back().swi_name = "OS_ReadVarVal";
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// R0: pointer to variable name.
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pointer = executor_.registers()[0];
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break;
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case 0x43057:
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swis.back().swi_name = "Territory_LowerCaseTable";
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break;
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case 0x43058:
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swis.back().swi_name = "Territory_UpperCaseTable";
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break;
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case 0x42fc1:
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swis.back().swi_name = "Portable_Control";
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break;
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}
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if(pointer) {
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while(true) {
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uint8_t next;
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executor_.bus.template read<uint8_t>(pointer, next, InstructionSet::ARM::Mode::Supervisor, false);
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++pointer;
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if(next == '\0') break;
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swis.back().value_name.push_back(static_cast<char>(next));
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}
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}
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}
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if(executor_.registers().pc_status(0) & InstructionSet::ARM::ConditionCode::Overflow) {
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logger.error().append("SWI called with V set");
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}
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}
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if(!swis.empty() && executor_.pc() == swis.back().return_address) {
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// Overflow set => SWI failure.
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@ -233,13 +291,20 @@ class ConcreteMachine:
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if(executor_.registers().pc_status(0) & InstructionSet::ARM::ConditionCode::Overflow) {
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auto info = logger.info();
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info.append("failed swi %x @ %08x ",
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back.opcode & 0xfd'ffff,
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back.address
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);
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info.append("failed swi ");
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if(back.swi_name.empty()) {
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info.append("&%x", back.opcode & 0xfd'ffff);
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} else {
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info.append("%s", back.swi_name.c_str());
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}
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info.append(" @ %08x ", back.address);
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for(uint32_t c = 0; c < 10; c++) {
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info.append("r%d:%08x ", c, back.regs[c]);
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}
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if(!back.value_name.empty()) {
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info.append("for %s", back.value_name.c_str());
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}
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}
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swis.pop_back();
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