Added modifier syntax to debugger: Changed watch's syntax, added format modifier to print/eval, added count option to examine command.
This commit is contained in:
Lior Halphon
parent
18ec502cfe
commit
ee51dec20e
183
Core/debugger.c
183
Core/debugger.c
@ -593,7 +593,7 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
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}
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struct debugger_command_s;
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typedef bool debugger_command_imp_t(GB_gameboy_t *gb, char *arguments, const struct debugger_command_s *command);
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typedef bool debugger_command_imp_t(GB_gameboy_t *gb, char *arguments, char *modifiers, const struct debugger_command_s *command);
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typedef struct debugger_command_s {
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const char *command;
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@ -601,6 +601,7 @@ typedef struct debugger_command_s {
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debugger_command_imp_t *implementation;
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const char *help_string; // Null if should not appear in help
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const char *arguments_format; // For usage message
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const char *modifiers_format; // For usage message
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} debugger_command_t;
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static const char *lstrip(const char *str)
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@ -617,18 +618,30 @@ GB_log(gb, "Program is running. \n"); \
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return false; \
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}
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static void print_usage(GB_gameboy_t *gb, const debugger_command_t *command)
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{
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if (command->arguments_format) {
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GB_log(gb, "Usage: %s %s\n", command->command, command->arguments_format);
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}
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else {
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GB_log(gb, "Usage: %s\n", command->command);
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}
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#define NO_MODIFIERS \
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if (modifiers) { \
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print_usage(gb, command); \
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return true; \
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}
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static bool cont(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static void print_usage(GB_gameboy_t *gb, const debugger_command_t *command)
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{
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GB_log(gb, "Usage: %s", command->command);
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if (command->arguments_format) {
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GB_log(gb, "[/%s]", command->modifiers_format);
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}
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if (command->arguments_format) {
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GB_log(gb, " %s", command->arguments_format);
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}
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GB_log(gb, "\n");
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}
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static bool cont(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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STOPPED_ONLY
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if (strlen(lstrip(arguments))) {
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@ -640,8 +653,9 @@ static bool cont(GB_gameboy_t *gb, char *arguments, const debugger_command_t *co
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return false;
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}
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static bool next(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool next(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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STOPPED_ONLY
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if (strlen(lstrip(arguments))) {
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@ -655,8 +669,9 @@ static bool next(GB_gameboy_t *gb, char *arguments, const debugger_command_t *co
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return false;
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}
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static bool step(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool step(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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STOPPED_ONLY
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if (strlen(lstrip(arguments))) {
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@ -667,8 +682,9 @@ static bool step(GB_gameboy_t *gb, char *arguments, const debugger_command_t *co
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return false;
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}
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static bool finish(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool finish(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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STOPPED_ONLY
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if (strlen(lstrip(arguments))) {
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@ -682,8 +698,9 @@ static bool finish(GB_gameboy_t *gb, char *arguments, const debugger_command_t *
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return false;
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}
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static bool stack_leak_detection(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool stack_leak_detection(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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STOPPED_ONLY
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if (strlen(lstrip(arguments))) {
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@ -697,8 +714,9 @@ static bool stack_leak_detection(GB_gameboy_t *gb, char *arguments, const debugg
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return false;
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}
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static bool registers(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool registers(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments))) {
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print_usage(gb, command);
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return true;
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@ -739,8 +757,9 @@ static uint16_t find_breakpoint(GB_gameboy_t *gb, value_t addr)
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return (uint16_t) min;
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}
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static bool breakpoint(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool breakpoint(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments)) == 0) {
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print_usage(gb, command);
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return true;
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@ -804,8 +823,9 @@ static bool breakpoint(GB_gameboy_t *gb, char *arguments, const debugger_command
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return true;
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}
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static bool delete(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool delete(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments)) == 0) {
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for (unsigned i = gb->n_breakpoints; i--;) {
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if (gb->breakpoints[i].condition) {
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@ -864,7 +884,7 @@ static uint16_t find_watchpoint(GB_gameboy_t *gb, value_t addr)
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return (uint16_t) min;
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}
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static bool watch(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool watch(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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if (strlen(lstrip(arguments)) == 0) {
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print_usage:
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@ -877,9 +897,13 @@ print_usage:
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return true;
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}
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if (!modifiers) {
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modifiers = "w";
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}
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uint8_t flags = 0;
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while (*arguments != ' ' && *arguments) {
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switch (*arguments) {
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while (*modifiers) {
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switch (*modifiers) {
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case 'r':
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flags |= GB_WATCHPOINT_R;
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break;
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@ -889,7 +913,7 @@ print_usage:
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default:
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goto print_usage;
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}
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arguments++;
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modifiers++;
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}
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if (!flags) {
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@ -956,8 +980,9 @@ print_usage:
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return true;
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}
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static bool unwatch(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool unwatch(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments)) == 0) {
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for (unsigned i = gb->n_watchpoints; i--;) {
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if (gb->watchpoints[i].condition) {
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@ -994,8 +1019,9 @@ static bool unwatch(GB_gameboy_t *gb, char *arguments, const debugger_command_t
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return true;
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}
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static bool list(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool list(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments))) {
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print_usage(gb, command);
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return true;
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@ -1077,22 +1103,61 @@ static bool should_break(GB_gameboy_t *gb, uint16_t addr)
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return _should_break(gb, full_addr);
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}
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static bool print(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool print(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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if (strlen(lstrip(arguments)) == 0) {
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print_usage(gb, command);
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return true;
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}
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if (!modifiers || !modifiers[0]) {
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modifiers = "a";
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}
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else if (modifiers[1]) {
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print_usage(gb, command);
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return true;
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}
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bool error;
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value_t result = debugger_evaluate(gb, arguments, (unsigned int)strlen(arguments), &error, NULL, NULL);
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if (!error) {
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switch (modifiers[0]) {
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case 'a':
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GB_log(gb, "=%s\n", debugger_value_to_string(gb, result, false));
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break;
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case 'd':
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GB_log(gb, "=%d\n", result.value);
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break;
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case 'x':
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GB_log(gb, "=$%x\n", result.value);
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break;
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case 'o':
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GB_log(gb, "=0%o\n", result.value);
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break;
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case 'b':
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{
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if (!result.value) {
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GB_log(gb, "=%%0\n");
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break;
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}
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char binary[17];
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binary[16] = 0;
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char *ptr = &binary[16];
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while (result.value) {
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*(--ptr) = (result.value & 1)? '1' : '0';
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result.value >>= 1;
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}
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GB_log(gb, "=%%%s\n", ptr);
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break;
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}
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default:
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break;
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}
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}
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return true;
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}
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static bool examine(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool examine(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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if (strlen(lstrip(arguments)) == 0) {
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print_usage(gb, command);
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@ -1101,33 +1166,54 @@ static bool examine(GB_gameboy_t *gb, char *arguments, const debugger_command_t
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bool error;
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value_t addr = debugger_evaluate(gb, arguments, (unsigned int)strlen(arguments), &error, NULL, NULL);
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uint16_t count = 32;
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if (modifiers) {
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char *end;
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count = (uint16_t) (strtol(modifiers, &end, 10));
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if (*end) {
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print_usage(gb, command);
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return true;
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}
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}
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if (!error) {
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if (addr.has_bank) {
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banking_state_t old_state;
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save_banking_state(gb, &old_state);
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switch_banking_state(gb, addr.bank);
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while (count) {
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GB_log(gb, "%02x:%04x: ", addr.bank, addr.value);
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for (int i = 0; i < 16; i++) {
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for (int i = 0; i < 16 && count; i++) {
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GB_log(gb, "%02x ", GB_read_memory(gb, addr.value + i));
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count--;
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}
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addr.value += 16;
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GB_log(gb, "\n");
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}
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restore_banking_state(gb, &old_state);
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}
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else {
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while (count) {
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GB_log(gb, "%04x: ", addr.value);
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for (int i = 0; i < 16; i++) {
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for (int i = 0; i < 16 && count; i++) {
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GB_log(gb, "%02x ", GB_read_memory(gb, addr.value + i));
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count--;
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}
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addr.value += 16;
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GB_log(gb, "\n");
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}
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}
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}
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return true;
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}
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static bool mbc(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool mbc(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments))) {
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print_usage(gb, command);
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return true;
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@ -1181,8 +1267,10 @@ static bool mbc(GB_gameboy_t *gb, char *arguments, const debugger_command_t *com
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return true;
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}
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static bool backtrace(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool backtrace(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments))) {
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print_usage(gb, command);
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return true;
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@ -1196,8 +1284,9 @@ static bool backtrace(GB_gameboy_t *gb, char *arguments, const debugger_command_
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return true;
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}
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static bool ticks(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool ticks(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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STOPPED_ONLY
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if (strlen(lstrip(arguments))) {
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@ -1212,8 +1301,9 @@ static bool ticks(GB_gameboy_t *gb, char *arguments, const debugger_command_t *c
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}
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static bool palettes(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command)
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static bool palettes(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command)
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{
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NO_MODIFIERS
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if (strlen(lstrip(arguments))) {
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print_usage(gb, command);
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return true;
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@ -1242,7 +1332,7 @@ static bool palettes(GB_gameboy_t *gb, char *arguments, const debugger_command_t
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return true;
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}
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static bool help(GB_gameboy_t *gb, char *arguments, const debugger_command_t *command);
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static bool help(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *command);
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#define HELP_NEWLINE "\n "
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@ -1254,24 +1344,28 @@ static const debugger_command_t commands[] = {
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{"finish", 1, finish, "Run until the current function returns"},
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{"backtrace", 2, backtrace, "Display the current call stack"},
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{"bt", 2, }, /* Alias */
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{"sld", 3, stack_leak_detection, "Like finish, but stops if a stack leak is detected. (Experimental)"},
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{"ticks", 2, ticks, "Display the number of CPU ticks since the last time 'ticks' was used. "},
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{"sld", 3, stack_leak_detection, "Like finish, but stops if a stack leak is detected (Experimental)"},
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{"ticks", 2, ticks, "Display the number of CPU ticks since the last time 'ticks' was used"},
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{"registers", 1, registers, "Print values of processor registers and other important registers"},
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{"cartridge", 2, mbc, "Displays information about the MBC and cartridge"},
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{"mbc", 3, }, /* Alias */
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{"palettes", 3, palettes, "Displays the current CGB palettes"},
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{"breakpoint", 1, breakpoint, "Add a new breakpoint at the specified address/expression." HELP_NEWLINE
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{"breakpoint", 1, breakpoint, "Add a new breakpoint at the specified address/expression" HELP_NEWLINE
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"Can also modify the condition of existing breakpoints.",
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"<expression>[ if <condition expression>]"},
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{"delete", 2, delete, "Delete a breakpoint by its address, or all breakpoints", "[<expression>]"},
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{"watch", 1, watch, "Add a new watchpoint at the specified address/expression." HELP_NEWLINE
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"Can also modify the condition and type of existing watchpoints.",
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" (r|w|rw) <expression>[ if <condition expression>]"},
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"Can also modify the condition and type of existing watchpoints." HELP_NEWLINE
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"Default watchpoint type is write-only.",
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"<expression>[ if <condition expression>]", "(r|w|rw)"},
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{"unwatch", 3, unwatch, "Delete a watchpoint by its address, or all watchpoints", "[<expression>]"},
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{"list", 1, list, "List all set breakpoints and watchpoints"},
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{"print", 1, print, "Evaluate and print an expression", "<expression>"},
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{"print", 1, print, "Evaluate and print an expression" HELP_NEWLINE
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"Use modifier to format as an address (a, default) or as a number in" HELP_NEWLINE
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"decimal (d), hexadecimal (x), octal (o) or binary (b).",
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"<expression>", "format"},
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{"eval", 2, }, /* Alias */
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{"examine", 2, examine, "Examine values at address", "<expression>"},
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{"examine", 2, examine, "Examine values at address", "<expression>", "count"},
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{"x", 1, }, /* Alias */
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{"help", 1, help, "List available commands or show help for the specified command", "[<command>]"},
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@ -1308,7 +1402,7 @@ static void print_command_description(GB_gameboy_t *gb, const debugger_command_t
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GB_log(gb, (const char *)&" %s\n" + strlen(command->command), command->help_string);
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}
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static bool help(GB_gameboy_t *gb, char *arguments, const debugger_command_t *ignored)
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static bool help(GB_gameboy_t *gb, char *arguments, char *modifiers, const debugger_command_t *ignored)
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{
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const debugger_command_t *command = find_command(arguments);
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if (command) {
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@ -1512,9 +1606,16 @@ bool GB_debugger_do_command(GB_gameboy_t *gb, char *input)
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arguments = "";
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}
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char *modifiers = strchr(command_string, '/');
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if (modifiers) {
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/* Actually "split" the string. */
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modifiers[0] = 0;
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modifiers++;
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}
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const debugger_command_t *command = find_command(command_string);
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if (command) {
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return command->implementation(gb, arguments, command);
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return command->implementation(gb, arguments, modifiers, command);
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}
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else {
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GB_log(gb, "%s: no such command.\n", command_string);
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