Fixed: Conditional read watchpoints crashed if the expression referred to the 'new' variable. Breakpoint and watchpoint conditions no longer trigger watchpoints.
This commit is contained in:
Lior Halphon
parent
8c14ec3268
commit
cd382ef236
@ -425,6 +425,12 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
size_t length, bool *error,
|
||||
uint16_t *watchpoint_address, uint8_t *watchpoint_new_value)
|
||||
{
|
||||
/* Disable watchpoints while evaulating expressions */
|
||||
uint16_t n_watchpoints = gb->n_watchpoints;
|
||||
gb->n_watchpoints = 0;
|
||||
|
||||
value_t ret = ERROR;
|
||||
|
||||
*error = false;
|
||||
// Strip whitespace
|
||||
while (length && (string[0] == ' ' || string[0] == '\n' || string[0] == '\r' || string[0] == '\t')) {
|
||||
@ -438,7 +444,7 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
{
|
||||
GB_log(gb, "Expected expression.\n");
|
||||
*error = true;
|
||||
return ERROR;
|
||||
goto exit;
|
||||
}
|
||||
if (string[0] == '(' && string[length - 1] == ')') {
|
||||
// Attempt to strip parentheses
|
||||
@ -452,7 +458,10 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
}
|
||||
if (string[i] == ')') depth--;
|
||||
}
|
||||
if (depth == 0) return debugger_evaluate(gb, string + 1, length - 2, error, watchpoint_address, watchpoint_new_value);
|
||||
if (depth == 0) {
|
||||
ret = debugger_evaluate(gb, string + 1, length - 2, error, watchpoint_address, watchpoint_new_value);
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
else if (string[0] == '[' && string[length - 1] == ']') {
|
||||
// Attempt to strip square parentheses (memory dereference)
|
||||
@ -471,14 +480,14 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
value_t addr = debugger_evaluate(gb, string + 1, length - 2, error, watchpoint_address, watchpoint_new_value);
|
||||
banking_state_t state;
|
||||
if (addr.bank) {
|
||||
save_banking_state(gb, &state);
|
||||
switch_banking_state(gb, addr.bank);
|
||||
save_banking_state(gb, &state);
|
||||
switch_banking_state(gb, addr.bank);
|
||||
}
|
||||
value_t r = VALUE_16(GB_read_memory(gb, addr.value));
|
||||
ret = VALUE_16(GB_read_memory(gb, addr.value));
|
||||
if (addr.bank) {
|
||||
restore_banking_state(gb, &state);
|
||||
restore_banking_state(gb, &state);
|
||||
}
|
||||
return r;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
}
|
||||
@ -511,15 +520,17 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
if (operator_index != -1) {
|
||||
unsigned int right_start = (unsigned int)(operator_pos + strlen(operators[operator_index].string));
|
||||
value_t right = debugger_evaluate(gb, string + right_start, length - right_start, error, watchpoint_address, watchpoint_new_value);
|
||||
if (*error) return ERROR;
|
||||
if (*error) goto exit;
|
||||
if (operators[operator_index].lvalue_operator) {
|
||||
lvalue_t left = debugger_evaluate_lvalue(gb, string, operator_pos, error, watchpoint_address, watchpoint_new_value);
|
||||
if (*error) return ERROR;
|
||||
return operators[operator_index].lvalue_operator(gb, left, right.value);
|
||||
if (*error) goto exit;
|
||||
ret = operators[operator_index].lvalue_operator(gb, left, right.value);
|
||||
goto exit;
|
||||
}
|
||||
value_t left = debugger_evaluate(gb, string, operator_pos, error, watchpoint_address, watchpoint_new_value);
|
||||
if (*error) return ERROR;
|
||||
return operators[operator_index].operator(left, right);
|
||||
if (*error) goto exit;
|
||||
ret = operators[operator_index].operator(left, right);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
// Not an expression - must be a register or a literal
|
||||
@ -528,38 +539,41 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
if (string[0] != '$' && (string[0] < '0' || string[0] > '9')) {
|
||||
if (length == 1) {
|
||||
switch (string[0]) {
|
||||
case 'a': return VALUE_16(gb->registers[GB_REGISTER_AF] >> 8);
|
||||
case 'f': return VALUE_16(gb->registers[GB_REGISTER_AF] & 0xFF);
|
||||
case 'b': return VALUE_16(gb->registers[GB_REGISTER_BC] >> 8);
|
||||
case 'c': return VALUE_16(gb->registers[GB_REGISTER_BC] & 0xFF);
|
||||
case 'd': return VALUE_16(gb->registers[GB_REGISTER_DE] >> 8);
|
||||
case 'e': return VALUE_16(gb->registers[GB_REGISTER_DE] & 0xFF);
|
||||
case 'h': return VALUE_16(gb->registers[GB_REGISTER_HL] >> 8);
|
||||
case 'l': return VALUE_16(gb->registers[GB_REGISTER_HL] & 0xFF);
|
||||
case 'a': ret = VALUE_16(gb->registers[GB_REGISTER_AF] >> 8); goto exit;
|
||||
case 'f': ret = VALUE_16(gb->registers[GB_REGISTER_AF] & 0xFF); goto exit;
|
||||
case 'b': ret = VALUE_16(gb->registers[GB_REGISTER_BC] >> 8); goto exit;
|
||||
case 'c': ret = VALUE_16(gb->registers[GB_REGISTER_BC] & 0xFF); goto exit;
|
||||
case 'd': ret = VALUE_16(gb->registers[GB_REGISTER_DE] >> 8); goto exit;
|
||||
case 'e': ret = VALUE_16(gb->registers[GB_REGISTER_DE] & 0xFF); goto exit;
|
||||
case 'h': ret = VALUE_16(gb->registers[GB_REGISTER_HL] >> 8); goto exit;
|
||||
case 'l': ret = VALUE_16(gb->registers[GB_REGISTER_HL] & 0xFF); goto exit;
|
||||
}
|
||||
}
|
||||
else if (length == 2) {
|
||||
switch (string[0]) {
|
||||
case 'a': if (string[1] == 'f') return VALUE_16(gb->registers[GB_REGISTER_AF]);
|
||||
case 'b': if (string[1] == 'c') return VALUE_16(gb->registers[GB_REGISTER_BC]);
|
||||
case 'd': if (string[1] == 'e') return VALUE_16(gb->registers[GB_REGISTER_DE]);
|
||||
case 'h': if (string[1] == 'l') return VALUE_16(gb->registers[GB_REGISTER_HL]);
|
||||
case 's': if (string[1] == 'p') return VALUE_16(gb->registers[GB_REGISTER_SP]);
|
||||
case 'p': if (string[1] == 'c') return (value_t){true, bank_for_addr(gb, gb->pc), gb->pc};
|
||||
case 'a': if (string[1] == 'f') {ret = VALUE_16(gb->registers[GB_REGISTER_AF]); goto exit;}
|
||||
case 'b': if (string[1] == 'c') {ret = VALUE_16(gb->registers[GB_REGISTER_BC]); goto exit;}
|
||||
case 'd': if (string[1] == 'e') {ret = VALUE_16(gb->registers[GB_REGISTER_DE]); goto exit;}
|
||||
case 'h': if (string[1] == 'l') {ret = VALUE_16(gb->registers[GB_REGISTER_HL]); goto exit;}
|
||||
case 's': if (string[1] == 'p') {ret = VALUE_16(gb->registers[GB_REGISTER_SP]); goto exit;}
|
||||
case 'p': if (string[1] == 'c') {ret = (value_t){true, bank_for_addr(gb, gb->pc), gb->pc}; goto exit;}
|
||||
}
|
||||
}
|
||||
else if (length == 3) {
|
||||
if (watchpoint_address && memcmp(string, "old", 3) == 0) {
|
||||
return VALUE_16(GB_read_memory(gb, *watchpoint_address));
|
||||
ret = VALUE_16(GB_read_memory(gb, *watchpoint_address));
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (watchpoint_new_value && memcmp(string, "new", 3) == 0) {
|
||||
return VALUE_16(*watchpoint_new_value);
|
||||
ret = VALUE_16(*watchpoint_new_value);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/* $new is identical to $old in read conditions */
|
||||
if (watchpoint_address && memcmp(string, "new", 3) == 0) {
|
||||
return VALUE_16(GB_read_memory(gb, *watchpoint_address));
|
||||
ret = VALUE_16(GB_read_memory(gb, *watchpoint_address));
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
|
||||
@ -568,12 +582,13 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
symbol_name[length] = 0;
|
||||
const GB_symbol_t *symbol = GB_reversed_map_find_symbol(&gb->reversed_symbol_map, symbol_name);
|
||||
if (symbol) {
|
||||
return (value_t){true, symbol->bank, symbol->addr};
|
||||
ret = (value_t){true, symbol->bank, symbol->addr};
|
||||
goto exit;
|
||||
}
|
||||
|
||||
GB_log(gb, "Unknown register or symbol: %.*s\n", (unsigned int) length, string);
|
||||
*error = true;
|
||||
return ERROR;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
char *end;
|
||||
@ -587,9 +602,12 @@ value_t debugger_evaluate(GB_gameboy_t *gb, const char *string,
|
||||
if (end != string + length) {
|
||||
GB_log(gb, "Failed to parse: %.*s\n", (unsigned int) length, string);
|
||||
*error = true;
|
||||
return ERROR;
|
||||
goto exit;
|
||||
}
|
||||
return VALUE_16(literal);
|
||||
ret = VALUE_16(literal);
|
||||
exit:
|
||||
gb->n_watchpoints = n_watchpoints;
|
||||
return ret;
|
||||
}
|
||||
|
||||
struct debugger_command_s;
|
||||
@ -1460,7 +1478,7 @@ static bool help(GB_gameboy_t *gb, char *arguments, char *modifiers, const debug
|
||||
}
|
||||
return true;
|
||||
}
|
||||
for (const debugger_command_t *command = commands; command->command; command++) {
|
||||
for (command = commands; command->command; command++) {
|
||||
if (command->help_string) {
|
||||
print_command_description(gb, command);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user