Updated the Parser to try and give 'AddressParameter's more meaning depending on the SymbolType.
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+2
-1
@@ -19,7 +19,8 @@ typedef enum {
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NoParameter,
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ConstantParameter,
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AddressParameter,
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RegisterParameter
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RegisterParameter,
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UnresolvedParameter
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} OpcodeParameter;
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typedef struct {
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+3
-1
@@ -1,5 +1,7 @@
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.db video_start 0xF37F
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.db msg "Hello, world!", 0
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.db NOTERM "No terminating byte here"
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.db null_byte 0
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load r1, [msg] ; Because the lod* instructions can't load an address
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; from anything but a register, this becomes laa r1, [msg]
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@@ -11,7 +13,7 @@ load r1, [msg] ; Because the lod* instructions can't load an address
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string_length:
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loadb r3, [r1] ; Load the byte from the address in R1, into R3
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load r2, 0 ; String length
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cmp r3, 0 ; Is R3 a null byte?
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cmp r3, null_byte ; Is R3 a null byte?
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je end
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inc r2
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+22
-2
@@ -109,7 +109,17 @@ int main(int argc, char* args[]) {
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break;
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case AddressParameter:
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if (ins->ParameterOne->InterpretedAs == AddressParameter) printf("[%s]", ins->ParameterOne->Value.Symbol);
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else printf("%s", ins->ParameterOne->Value.Symbol);
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else {
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Symbol* s = TryGetSymbol(ins->ParameterOne->Value.Symbol, image->SymbolsTable);
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switch(s->Type) {
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case NumericSymbol:
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printf("%s {%d}", s->Name, s->Value.Number);
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break;
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default:
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printf("%s", ins->ParameterOne->Value.Symbol);
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}
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}
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break;
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default:
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printf("\n");
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@@ -133,7 +143,17 @@ int main(int argc, char* args[]) {
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break;
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case AddressParameter:
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if (ins->ParameterTwo->InterpretedAs == AddressParameter) printf(", [%s]\n", ins->ParameterTwo->Value.Symbol);
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else printf(", %s\n", ins->ParameterTwo->Value.Symbol);
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else {
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Symbol* s = TryGetSymbol(ins->ParameterTwo->Value.Symbol, image->SymbolsTable);
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switch(s->Type) {
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case NumericSymbol:
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printf(", %s {%d}\n", s->Name, s->Value.Number);
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break;
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default:
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printf(", %s\n", ins->ParameterTwo->Value.Symbol);
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}
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}
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break;
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default:
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printf("\n");
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+21
-4
@@ -148,11 +148,28 @@ Parameter* GetParameterType() {
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//case LabelClass:
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case IdentifierClass:
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param->ParameterType = AddressParameter;
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param->InterpretedAs = AddressParameter;
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//param->InterpretedAs = AddressParameter;
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symbol = TryGetSymbol(token->Lemexe, MachineState.SymbolsTable);
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if (!symbol) symbol = AddSymbolToTable(token->Lemexe, UnresolvedSymbol, MachineState.SymbolsTable);
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if (!symbol) {
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symbol = AddSymbolToTable(token->Lemexe, UnresolvedSymbol, MachineState.SymbolsTable);
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param->InterpretedAs = UnresolvedParameter;
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}
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else {
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switch(symbol->Type) {
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case InstructionPointerSymbol:
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case StringSymbol:
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param->InterpretedAs = AddressParameter;
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break;
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case NumericSymbol:
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param->InterpretedAs = ConstantParameter;
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break;
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default:
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param->InterpretedAs = UnresolvedParameter;
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break;
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}
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}
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param->Value.Symbol = symbol->Name;
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@@ -298,9 +315,9 @@ void PrintSymbols(void) {
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break;
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case StringSymbol:
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if (symbol->Value.String->Terminated)
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printf("[S] %s, %d", symbol->Name, symbol->Value.String->TerminatingByte);
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printf("[S] %s {%s}, %d", symbol->Name, symbol->Value.String->String, symbol->Value.String->TerminatingByte);
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else
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printf("[S] %s", symbol->Value.String->String);
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printf("[S] %s {%s}", symbol->Name, symbol->Value.String->String);
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break;
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case UnresolvedSymbol:
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printf("[U] %s", symbol->Name);
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