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debugger: Auto increment after disassemble.

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Pressing return after disassembling some instructions should cause the next instruction to disassemble.
This commit is contained in:
joevt 2023-07-28 14:23:09 -07:00 committed by dingusdev
parent 619579bee3
commit 7866675a55
1 changed files with 25 additions and 9 deletions
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34
debugger/debugger.cpp
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@ -108,7 +108,7 @@ static void show_help() {
#ifdef ENABLE_68K_DEBUGGER #ifdef ENABLE_68K_DEBUGGER
static void disasm_68k(uint32_t count, uint32_t address) { static uint32_t disasm_68k(uint32_t count, uint32_t address) {
csh cs_handle; csh cs_handle;
uint8_t code[10]; uint8_t code[10];
size_t code_size; size_t code_size;
@ -116,7 +116,7 @@ static void disasm_68k(uint32_t count, uint32_t address) {
if (cs_open(CS_ARCH_M68K, CS_MODE_M68K_040, &cs_handle) != CS_ERR_OK) { if (cs_open(CS_ARCH_M68K, CS_MODE_M68K_040, &cs_handle) != CS_ERR_OK) {
cout << "Capstone initialization error" << endl; cout << "Capstone initialization error" << endl;
return; return address;
} }
cs_insn* insn = cs_malloc(cs_handle); cs_insn* insn = cs_malloc(cs_handle);
@ -154,6 +154,7 @@ print_bin:
cs_free(insn, 1); cs_free(insn, 1);
cs_close(&cs_handle); cs_close(&cs_handle);
return address;
} }
/* emulator opcode table size --> 512 KB */ /* emulator opcode table size --> 512 KB */
@ -331,7 +332,7 @@ static void dump_mem(string& params) {
cout << endl << endl; cout << endl << endl;
} }
static void disasm(uint32_t count, uint32_t address) { static uint32_t disasm(uint32_t count, uint32_t address) {
PPCDisasmContext ctx; PPCDisasmContext ctx;
ctx.instr_addr = address; ctx.instr_addr = address;
@ -343,6 +344,7 @@ static void disasm(uint32_t count, uint32_t address) {
cout << ": " << setfill('0') << setw(8) << right << uppercase << hex << ctx.instr_code; cout << ": " << setfill('0') << setw(8) << right << uppercase << hex << ctx.instr_code;
cout << " " << disassemble_single(&ctx) << setfill(' ') << left << endl; cout << " " << disassemble_single(&ctx) << setfill(' ') << left << endl;
} }
return ctx.instr_addr;
} }
static void print_gprs() { static void print_gprs() {
@ -444,6 +446,9 @@ void enter_debugger() {
int log_level, context; int log_level, context;
size_t separator_pos; size_t separator_pos;
bool did_message = false; bool did_message = false;
uint32_t next_addr_ppc;
uint32_t next_addr_68k;
bool cmd_repeat;
unique_ptr<OfConfigUtils> ofnvram = unique_ptr<OfConfigUtils>(new OfConfigUtils); unique_ptr<OfConfigUtils> ofnvram = unique_ptr<OfConfigUtils>(new OfConfigUtils);
@ -525,7 +530,8 @@ void enter_debugger() {
continue; continue;
} }
if (cmd.empty() && !last_cmd.empty()) { cmd_repeat = cmd.empty() && !last_cmd.empty();
if (cmd_repeat) {
cmd = last_cmd; cmd = last_cmd;
} }
if (cmd == "help") { if (cmd == "help") {
@ -672,10 +678,10 @@ void enter_debugger() {
try { try {
if (context == 2) { if (context == 2) {
#ifdef ENABLE_68K_DEBUGGER #ifdef ENABLE_68K_DEBUGGER
disasm_68k(inst_grab, addr); next_addr_68k = disasm_68k(inst_grab, addr);
#endif #endif
} else { } else {
disasm(inst_grab, addr); next_addr_ppc = disasm(inst_grab, addr);
} }
} catch (invalid_argument& exc) { } catch (invalid_argument& exc) {
cout << exc.what() << endl; cout << exc.what() << endl;
@ -685,14 +691,24 @@ void enter_debugger() {
try { try {
if (context == 2) { if (context == 2) {
#ifdef ENABLE_68K_DEBUGGER #ifdef ENABLE_68K_DEBUGGER
if (cmd_repeat) {
addr = next_addr_68k;
}
else {
addr_str = "R24"; addr_str = "R24";
addr = get_reg(addr_str); addr = get_reg(addr_str) - 2;
disasm_68k(1, addr - 2); }
next_addr_68k = disasm_68k(1, addr);
#endif #endif
} else { } else {
if (cmd_repeat) {
addr = next_addr_ppc;
}
else {
addr_str = "PC"; addr_str = "PC";
addr = (uint32_t)get_reg(addr_str); addr = (uint32_t)get_reg(addr_str);
disasm(1, addr); }
next_addr_ppc = disasm(1, addr);
} }
} catch (invalid_argument& exc) { } catch (invalid_argument& exc) {
cout << exc.what() << endl; cout << exc.what() << endl;