102 lines
2.0 KiB
C++
102 lines
2.0 KiB
C++
//---
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// fxos.passes.print: Print disassembly
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//---
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#include <fxos/disasm-passes/print.h>
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#include <fxos/disassembly.h>
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namespace FxOS {
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PrintPass::PrintPass(Disassembly &disasm):
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DisassemblyPass(disasm)
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{
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/* Default parameter set */
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hide_resolved_pcjump = false;
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hide_resolved_pcrel = false;
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hide_movpc_address = Hide_MovPC_Never;
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}
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void PrintPass::run(void)
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{
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for(auto &pair: m_disasm.instructions())
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{
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analyze(pair.first, pair.second);
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}
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}
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void PrintPass::analyze(uint32_t pc, ConcreteInstruction &ci)
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{
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Instruction const &i = ci.inst;
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/* Mnemonic */
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static std::map<int, std::string> suffixes = {
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{ 1, ".b" }, { 2, ".w" }, { 4, ".l" } };
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std::string mnemonic = i.mnemonic + suffixes[i.opsize];
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if(i.args.size())
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mnemonic += std::string(8 - mnemonic.size(), ' ');
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printf(" %08x: %04x %s", pc, ci.inst.opcode, mnemonic.c_str());
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/* Arguments */
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for(size_t n = 0; n < i.args.size(); n++)
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{
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auto &a = i.args[n];
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Location &l = ci.args[n].location;
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std::optional<DataValue> v = ci.args[n].value;
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if(n) printf(", ");
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if(a.kind == Argument::PcJump)
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{
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if(!l || !hide_resolved_pcjump)
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printf("%s", a.str().c_str());
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if(l)
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printf("<%s>", l.str().c_str());
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}
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else if(a.kind == Argument::PcRel)
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{
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pcrel(pc, a, l, v);
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}
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else
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{
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printf("%s", a.str().c_str());
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}
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}
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printf("\n");
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}
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void PrintPass::pcrel(uint32_t pc, Argument const &a, Location const &l,
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std::optional<DataValue> v)
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{
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if(!l || !hide_resolved_pcrel)
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{
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printf("%s", a.str().c_str());
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}
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if(!l || !RelConstDomain().is_constant(l)) return;
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auto reg_code = MemoryRegion::region_for(pc);
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auto reg_data = MemoryRegion::region_for(l.uval);
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bool hma = hide_movpc_address;
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bool same_region = (reg_code && reg_code == reg_data);
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if(!v || hma == Hide_MovPC_Never ||
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(hma == Hide_MovPC_Region && !same_region))
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{
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printf("<%s>", l.str().c_str());
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if(v)
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printf("(%s)", v->str().c_str());
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}
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else if(v)
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{
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printf("%s", v->str().c_str());
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}
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}
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} /* namespace FxOS */
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