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| author | Kartik Agaram <vc@akkartik.com> | 2018-07-30 14:07:55 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-07-30 14:07:55 -0700 |
| commit | b359facba940e9171c31c2dc67661097b53ebd08 (patch) | |
| tree | 7180780017f566d13abd285b8e63bc2ea57e6123 /subx | |
| parent | 10f4dd63cfb8580b3acbd1173d3ec950a5835d78 (diff) | |
| download | mu-b359facba940e9171c31c2dc67661097b53ebd08.tar.gz | |
4460
Some debugging affordances.
Diffstat (limited to 'subx')
| -rw-r--r-- | subx/010vm.cc | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/subx/010vm.cc b/subx/010vm.cc index 0a549982..c467255b 100644 --- a/subx/010vm.cc +++ b/subx/010vm.cc @@ -148,8 +148,10 @@ void run_one_instruction() { uint8_t op=0, op2=0, op3=0; trace(90, "run") << "inst: 0x" << HEXWORD << EIP << end(); //? dump_registers(); -//? cerr << "inst: 0x" << EIP << '\n'; - switch (op = next()) { +//? cerr << "inst: 0x" << EIP << " => "; + op = next(); +//? cerr << HEXBYTE << NUM(op) << '\n'; + switch (op) { case 0xf4: // hlt EIP = End_of_program; break; @@ -195,9 +197,9 @@ inline uint8_t next() { void dump_registers() { for (int i = 0; i < NUM_INT_REGISTERS; ++i) { if (i > 0) cerr << "; "; - cerr << " " << i << ": " << HEXWORD << Reg[i].u; + cerr << " " << i << ": " << std::hex << std::setw(8) << std::setfill('_') << Reg[i].u; } - cerr << '\n'; + cerr << " -- SF: " << SF << "; ZF: " << ZF << "; OF: " << OF << '\n'; } //: start tracking supported opcodes |