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debugger: implement setmem command.

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This commit is contained in:
Maxim Poliakovski
2024-12-11 21:54:18 +01:00
parent fd4057ea61
commit 69c4d6489d
1 changed files with 83 additions and 0 deletions
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83
debugger/debugger.cpp
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@@ -86,6 +86,9 @@ static void show_help() {
cout << " dump NT,X -- dump N memory cells of size T at address X" << endl;
cout << " T can be b(byte), w(word), d(double)," << endl;
cout << " q(quad) or c(character)." << endl;
cout << " setmem X=V.T -- set memory at address X to value V of size T" << endl;
cout << " T can be b(byte), w(word), d(double)," << endl;
cout << " q(quad) or c(character)." << endl;
cout << " profile C N -- run subcommand C on profile N" << endl;
cout << " supported subcommands:" << endl;
cout << " 'show' - show profile report" << endl;
@@ -337,6 +340,82 @@ static void dump_mem(string& params) {
cout << endl << endl;
}
static void patch_mem(string& params) {
int value_size = 1;
uint32_t addr, value;
string addr_str, value_str, size_str;
if (params.find_first_of("=") == std::string::npos) {
cout << "setmem: not enough arguments specified. Try 'help'." << endl;
return;
}
addr_str = params.substr(0, params.find_first_of("="));
value_str = params.substr(params.find_first_of("=") + 1);
if (value_str.find_first_of(".") == std::string::npos) {
cout << "setmem: no value size specified. Try 'help'." << endl;
return;
}
size_str = value_str.substr(value_str.find_first_of(".") + 1);
value_str = value_str.substr(0, value_str.find_first_of("."));
bool is_char = false;
switch (size_str.back()) {
case 'b':
case 'B':
value_size = 1;
break;
case 'w':
case 'W':
value_size = 2;
break;
case 'd':
case 'D':
value_size = 4;
break;
case 'q':
case 'Q':
value_size = 8;
break;
case 'c':
case 'C':
value_size = 1;
is_char = true;
break;
default:
cout << "Invalid value size " << size_str << endl;
return;
}
try {
addr = str2addr(addr_str);
} catch (invalid_argument& exc) {
try {
// number conversion failed, trying reg name
addr = get_reg(addr_str);
} catch (invalid_argument& exc) {
cout << exc.what() << endl;
return;
}
}
try {
value = str2num(value_str);
} catch (invalid_argument& exc) {
cout << exc.what() << endl;
return;
}
try {
mem_write_dbg(addr, value, value_size);
} catch (invalid_argument& exc) {
cout << exc.what() << endl;
}
}
static uint32_t disasm(uint32_t count, uint32_t address) {
PPCDisasmContext ctx;
@@ -785,6 +864,10 @@ void DppcDebugger::enter_debugger() {
expr_str = "";
ss >> expr_str;
dump_mem(expr_str);
} else if (cmd == "setmem") {
expr_str = "";
ss >> expr_str;
patch_mem(expr_str);
#ifdef ENABLE_68K_DEBUGGER
} else if (cmd == "context") {
cmd = "";