From 8950915a007f78c427f176609678c50ef9923e5b Mon Sep 17 00:00:00 2001 From: Kartik Agaram Date: Wed, 10 Oct 2018 19:51:20 -0700 Subject: 4678 A debugging aid: 'subx --map translate' dumps a mapping from functions to addresses to a file called "map", and 'subx --map run' loads the mapping in "map", augmenting debug traces. Let's see how much this helps. Debugging machine code has been pretty painful lately. --- subx/039debug.cc | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 subx/039debug.cc (limited to 'subx/039debug.cc') diff --git a/subx/039debug.cc b/subx/039debug.cc new file mode 100644 index 00000000..4d041fa4 --- /dev/null +++ b/subx/039debug.cc @@ -0,0 +1,25 @@ +//: Some helpers for debugging. + +// Load the 'map' file generated during 'subx --map translate' when running 'subx --map --dump run'. +// (It'll only affect the trace.) + +:(before "End Globals") +map Symbol_name; // used only by 'subx run' +:(before "End --map Settings") +load_map("map"); +:(code) +void load_map(const string& map_filename) { + ifstream fin(map_filename.c_str()); + fin >> std::hex; + while (has_data(fin)) { + uint32_t addr = 0; + fin >> addr; + string name; + fin >> name; + put(Symbol_name, addr, name); + } +} + +:(after "Run One Instruction") +if (contains_key(Symbol_name, EIP)) + trace(90, "run") << "== label " << get(Symbol_name, EIP) << end(); -- cgit 1.4.1-2-gfad0