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Add stack guards

This commit is contained in:
Alexander Batalov 2022-07-05 10:26:52 +03:00
parent 82150d118b
commit 51911f7186
1 changed files with 16 additions and 0 deletions
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16
src/interpreter.cc
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@ -2929,6 +2929,10 @@ static void interpreterPrintStats()
void programStackPushValue(Program* program, ProgramValue& programValue) void programStackPushValue(Program* program, ProgramValue& programValue)
{ {
if (program->stackValues->size() > 0x1000) {
programFatalError("programStackPushValue: Stack overflow.");
}
program->stackValues->push_back(programValue); program->stackValues->push_back(programValue);
if (programValue.opcode == VALUE_TYPE_DYNAMIC_STRING) { if (programValue.opcode == VALUE_TYPE_DYNAMIC_STRING) {
@ -2970,6 +2974,10 @@ void programStackPushPointer(Program* program, void* value)
ProgramValue programStackPopValue(Program* program) ProgramValue programStackPopValue(Program* program)
{ {
if (program->stackValues->empty()) {
programFatalError("programStackPopValue: Stack underflow.");
}
ProgramValue programValue = program->stackValues->back(); ProgramValue programValue = program->stackValues->back();
program->stackValues->pop_back(); program->stackValues->pop_back();
@ -3018,6 +3026,10 @@ void* programStackPopPointer(Program* program)
void programReturnStackPushValue(Program* program, ProgramValue& programValue) void programReturnStackPushValue(Program* program, ProgramValue& programValue)
{ {
if (program->returnStackValues->size() > 0x1000) {
programFatalError("programReturnStackPushValue: Stack overflow.");
}
program->returnStackValues->push_back(programValue); program->returnStackValues->push_back(programValue);
if (programValue.opcode == VALUE_TYPE_DYNAMIC_STRING) { if (programValue.opcode == VALUE_TYPE_DYNAMIC_STRING) {
@ -3043,6 +3055,10 @@ void programReturnStackPushPointer(Program* program, void* value)
ProgramValue programReturnStackPopValue(Program* program) ProgramValue programReturnStackPopValue(Program* program)
{ {
if (program->returnStackValues->empty()) {
programFatalError("programReturnStackPopValue: Stack underflow.");
}
ProgramValue programValue = program->returnStackValues->back(); ProgramValue programValue = program->returnStackValues->back();
program->returnStackValues->pop_back(); program->returnStackValues->pop_back();