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195
src/Assembler.c
195
src/Assembler.c
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@ -9,16 +9,17 @@
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/*
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* If the entry in UsedRegisters
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* that correlates to the position of a register in Registers
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* is 1,
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* then that register is classed as used -
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* it has useful data inside it.
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* Stores how many hardware registers are being used at any one time.
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* It is empirically proven that only 4 clobber registers are
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* needed for any arbitrary length program.
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*
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* If UsedRegisters[i] =? 1, then Registers[i] contains useful data.
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* If UsedRegisters[i] =? 0, then Registers[i] is unused.
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*
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* if the entry is 0, then it is free.
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*/
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static int UsedRegisters[4];
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/* The https://en.wikipedia.org/wiki/X86_calling_conventions#Microsoft_x64_calling_convention
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* calling convention on Windows requires that
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* the last 4 arguments are placed in registers
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@ -26,25 +27,43 @@ static int UsedRegisters[4];
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* This order must be preserved, and they must be placed
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* right to left.
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*
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* That is the reason for the weird arrangement here.
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* The parameter registers are last, in reverse order.
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* The 4 clobber registers are first, and the 4 parameter registers are last.
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*/
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static char* Registers[8] = { "%r10", "%r11" , "%r12" , "%r13", "%r9" , "%r8", "%rdx", "%rcx" };
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static char* DoubleRegisters[8] = { "%r10d", "%r11d", "%r12d", "%r13d", "%r9d", "%r8d", "%edx", "%ecx" };
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static char* ByteRegisters[8] = { "%r10b", "%r11b", "%r12b", "%r13b", "%r9b", "%r8b", "%dl" , "%cl" };
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/*
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* For ease of reading later code, we store the valid x86 comparison instructions,
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* and the inverse jump instructions together, in a synchronized fashion.
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*/
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static char* Registers[10] = { "%rsi", "%rdi", "%r10", "%r11" , "%r12" , "%r13", "%r9" , "%r8", "%rdx", "%rcx" };
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static char* DoubleRegisters[10] = { "%esi", "%edi", "%r10d", "%r11d", "%r12d", "%r13d", "%r9d", "%r8d", "%edx", "%ecx" };
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static char* ByteRegisters[10] = { "%sil", "%dil", "%r10b", "%r11b", "%r12b", "%r13b", "%r9b", "%r8b", "%dl" , "%cl" };
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static char* Comparisons[6] = { "sete", "setne", "setl", "setg", "setle", "setge" };
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static char* InvComparisons[6] = { "jne", "je", "jge", "jle", "jg", "jl"};
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// How far above the base pointer is the last local?
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static int LocalVarOffset;
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// How far must we lower the base pointer to retrieve the parameters?
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static int StackFrameOffset;
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* * * * R O O T O F A S S E M B L E R * * * *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * */
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// Just a short "hack" to make sure we only dump the tree the first time this function is called
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static int Started = 0;
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/*
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* Walk the AST tree given, and generate the assembly code that represents
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* it.
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*
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* @param Node: The current Node to compile. If needed, its children will be parsed recursively.
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* @param Register: The index of Registers to store the result of the current compilation.
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* @param ParentOp: The Operation of the parent of the current Node.
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*
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* @return dependant on the Node. Typically the Register that stores the result of the Node's operation.
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*
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*/
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int AssembleTree(struct ASTNode* Node, int Register, int ParentOp) {
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int LeftVal, RightVal;
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if(!Started && OptDumpTree)
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@ -83,14 +102,6 @@ int AssembleTree(struct ASTNode* Node, int Register, int ParentOp) {
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if(Node->Right)
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RightVal = AssembleTree(Node->Right, LeftVal, Node->Operation);
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/* if(Node->Operation == TERM_INTLITERAL)
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printf("int %d\n", Node->IntValue);
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else
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printf("%d %s %d\n", LeftVal, TokenStrings[Node->Operation], RightVal);
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*/
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switch(Node->Operation) {
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case OP_ADD:
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return AsAdd(LeftVal, RightVal);
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@ -141,31 +152,13 @@ int AssembleTree(struct ASTNode* Node, int Register, int ParentOp) {
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case OP_WIDEN:
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printf("\tWidening types..\r\n");
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return LeftVal; //AsWiden(LeftVal, Node->Left->ExprType, Node->ExprType);
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return LeftVal;
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case OP_RET:
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printf("\tReturning from %s\n", Node->Symbol->Name);
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AsReturn(FunctionEntry, LeftVal);
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return -1;
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/* case OP_EQUAL:
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return AsEqual(LeftVal, RightVal);
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case OP_INEQ:
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return AsIneq(LeftVal, RightVal);
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case OP_LESS:
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return AsLess(LeftVal, RightVal);
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case OP_GREAT:
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return AsGreat(LeftVal, RightVal);
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case OP_LESSE:
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return AsLessE(LeftVal, RightVal);
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case OP_GREATE:
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return AsGreatE(LeftVal, RightVal); */
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case OP_EQUAL:
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case OP_INEQ:
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case OP_LESS:
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@ -179,7 +172,6 @@ int AssembleTree(struct ASTNode* Node, int Register, int ParentOp) {
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case REF_IDENT:
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//printf("\tReferencing variable %s %s with type %s and storage %d\r\n", Symbols[Node->Value.ID].Name, Node->RVal ? " rval " : "", ParentOp, Symbols[Node->Value.ID].Storage);
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if(Node->RVal || ParentOp == OP_DEREF) {
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if(Node->Symbol->Storage == SC_LOCAL || Node->Symbol->Storage == SC_PARAM)
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return AsLdLocalVar(Node->Symbol, Node->Operation);
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@ -199,11 +191,6 @@ int AssembleTree(struct ASTNode* Node, int Register, int ParentOp) {
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DeallocateAllRegisters();
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return -1;
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/* case OP_LOOP:
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// We only do while for now..
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return AsWhile(Node);
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break; */
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case OP_BITAND:
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return AsBitwiseAND(LeftVal, RightVal);
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@ -252,24 +239,31 @@ int AssembleTree(struct ASTNode* Node, int Register, int ParentOp) {
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* * * * R E G I S T E R M A N A G E M E N T * * * *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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// Set all Registers to unused.
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void DeallocateAllRegisters() {
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UsedRegisters[0] = UsedRegisters[1] = UsedRegisters[2] = UsedRegisters[3] = 0;
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}
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/*
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* Search for an unused register, allocate it, and return it.
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* If none available, cancel compilation.
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*/
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int RetrieveRegister() {
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//printf("Current state of registers: %x, %x, %x, %x\n", UsedRegisters[0], UsedRegisters[1], UsedRegisters[2], UsedRegisters[3]);
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for (size_t i = 0; i < 4; i++) {
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if(UsedRegisters[i] == 0) {
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UsedRegisters[i] = 1;
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return i;
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}
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}
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fprintf(stderr, "Out of registers!\n");
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exit(1);
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}
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/*
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* Set the given register to unused.
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* If the register is not used, it is an invalid state.
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* @param Register: The Registers index to deallocate.
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*/
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void DeallocateRegister(int Register) {
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if(UsedRegisters[Register] != 1) {
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fprintf(stderr, "Error trying to free register %d\n", Register);
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@ -283,10 +277,25 @@ void DeallocateRegister(int Register) {
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* * * * * * S T A C K M A N A G E M E N T * * * * * *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Prepare a new stack frame pointer.
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* This resets the highest local.
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*
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*/
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void AsNewStackFrame() {
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LocalVarOffset = 0;
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}
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/*
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* Given the type of input, how far do we need to go down the stack frame
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* to store or retrieve this type?
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*
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* The stack must be 4-bytes aligned, so we set a hard minimum.
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*
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* @param Type: The DataTypes we want to store.
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* @return the offset to store the type, taking into account the current state of the stack frame.
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*
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*/
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int AsCalcOffset(int Type) {
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LocalVarOffset += PrimitiveSize(Type) > 4 ? PrimitiveSize(Type) : 4;
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return -LocalVarOffset;
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@ -296,12 +305,19 @@ int AsCalcOffset(int Type) {
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* * * * C O D E G E N E R A T I O N * * * *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* A way to keep track of the largest label number.
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* Call this function to increase the number SRG-like.
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*
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* @return the highest available label number
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*
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*/
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int NewLabel(void) {
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static int id = 1;
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return id++;
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}
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// Assemble an If statement
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int AsIf(struct ASTNode* Node) {
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int FalseLabel, EndLabel;
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@ -333,6 +349,7 @@ int AsIf(struct ASTNode* Node) {
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return -1;
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}
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// Assemble a comparison
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int AsCompare(int Operation, int RegisterLeft, int RegisterRight) {
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printf("Comparing registers %d & %d\n", RegisterLeft, RegisterRight);
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@ -346,6 +363,7 @@ int AsCompare(int Operation, int RegisterLeft, int RegisterRight) {
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return RegisterRight;
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}
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// Assemble an inverse comparison (a one-line jump)
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int AsCompareJmp(int Operation, int RegisterLeft, int RegisterRight, int Label) {
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if(Operation < OP_EQUAL || Operation > OP_GREATE)
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Die("Bad Operation in AsCompareJmp");
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@ -359,16 +377,24 @@ int AsCompareJmp(int Operation, int RegisterLeft, int RegisterRight, int Label)
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return -1;
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}
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// Assemble an immediate jump
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void AsJmp(int Label) {
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printf("\t\tJumping to label %d\n", Label);
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fprintf(OutputFile, "\tjmp\tL%d\n", Label);
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}
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/* Create a new base label
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* @param Label: The number to create the label of
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*/
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void AsLabel(int Label) {
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printf("\tCreating label %d\n", Label);
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fprintf(OutputFile, "\nL%d:\n", Label);
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}
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/*
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* Assemble a new global string into the data segment.
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* @param Value: The name of the string, as a string
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*/
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int AsNewString(char* Value) {
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int Label = NewLabel();
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char* CharPtr;
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@ -382,12 +408,17 @@ int AsNewString(char* Value) {
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return Label;
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}
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/*
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* Load a string into a Register.
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* @param ID: the Label number of the string
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*/
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int AsLoadString(int ID) {
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int Register = RetrieveRegister();
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fprintf(OutputFile, "\tleaq\tL%d(\%%rip), %s\r\n", ID, Registers[Register]);
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return Register;
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}
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// Assemble a While loop
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int AsWhile(struct ASTNode* Node) {
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int BodyLabel, BreakLabel;
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@ -418,6 +449,7 @@ int AsWhile(struct ASTNode* Node) {
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}
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// Load a value into a register.
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int AsLoad(int Value) {
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int Register = RetrieveRegister();
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@ -428,6 +460,7 @@ int AsLoad(int Value) {
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return Register;
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}
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// Assemble an addition.
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int AsAdd(int Left, int Right) {
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printf("\tAdding Registers %s, %s\n", Registers[Left], Registers[Right]);
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fprintf(OutputFile, "\taddq\t%s, %s\n", Registers[Left], Registers[Right]);
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@ -437,6 +470,7 @@ int AsAdd(int Left, int Right) {
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return Right;
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}
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// Assemble a multiplication.
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int AsMul(int Left, int Right) {
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printf("\tMultiplying Registers %s, %s\n", Registers[Left], Registers[Right]);
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fprintf(OutputFile, "\timulq\t%s, %s\n", Registers[Left], Registers[Right]);
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@ -446,6 +480,7 @@ int AsMul(int Left, int Right) {
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return Right;
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}
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// Assemble a subtraction.
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int AsSub(int Left, int Right) {
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printf("\tSubtracting Registers %s, %s\n", Registers[Left], Registers[Right]);
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fprintf(OutputFile, "\tsubq\t%s, %s\n", Registers[Right], Registers[Left]);
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@ -455,6 +490,7 @@ int AsSub(int Left, int Right) {
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return Left;
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}
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// Assemble a division.
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int AsDiv(int Left, int Right) {
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printf("\tDividing Registers %s, %s\n", Registers[Left], Registers[Right]);
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fprintf(OutputFile, "\tmovq\t%s, %%rax\n", Registers[Left]);
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@ -467,12 +503,18 @@ int AsDiv(int Left, int Right) {
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return Left;
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}
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// Assemble an ASL
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int AsShl(int Register, int Val) {
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printf("\tShifting %s to the left by %d bits.\n", Registers[Register], Val);
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fprintf(OutputFile, "\tsalq\t$%d, %s\n", Val, Registers[Register]);
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return Register;
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}
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/*
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* Load a global variable into a register, with optional pre/post-inc/dec
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* @param Entry: The variable to load.
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* @param Operation: An optional SyntaxOps element
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*/
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int AsLdGlobalVar(struct SymbolTableEntry* Entry, int Operation) {
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int Reg = RetrieveRegister();
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@ -543,6 +585,11 @@ int AsLdGlobalVar(struct SymbolTableEntry* Entry, int Operation) {
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return Reg;
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}
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/*
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* Store a value from a register into a global variable.
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* @param Entry: The variable to store into.
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* @param Regsiter: The Registers index containing the value to store.
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*/
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int AsStrGlobalVar(struct SymbolTableEntry* Entry, int Register) {
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printf("\tStoring contents of %s into %s, type %d, globally:\n", Registers[Register], Entry->Name, Entry->Type);
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@ -568,6 +615,12 @@ int AsStrGlobalVar(struct SymbolTableEntry* Entry, int Register) {
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return Register;
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}
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/*
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* Load a value from a local variable into a register, with optional post/pre-inc/dec
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* @param Entry: The local variable to read
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* @param Operation: An optional SyntaxOps entry
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*/
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int AsLdLocalVar(struct SymbolTableEntry* Entry, int Operation) {
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int Reg = RetrieveRegister();
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@ -638,6 +691,12 @@ int AsLdLocalVar(struct SymbolTableEntry* Entry, int Operation) {
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return Reg;
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}
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/*
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* Store a value from a register into a local variable.
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* @param Entry: The local variable to write to.
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* @param Register: The Registers index containing the desired value
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*
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*/
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int AsStrLocalVar(struct SymbolTableEntry* Entry, int Register) {
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printf("\tStoring contents of %s into %s, type %d, locally\n", Registers[Register], Entry->Name, Entry->Type);
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@ -663,6 +722,7 @@ int AsStrLocalVar(struct SymbolTableEntry* Entry, int Register) {
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return Register;
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}
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// Assemble a pointerisation
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int AsAddr(struct SymbolTableEntry* Entry) {
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int Register = RetrieveRegister();
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printf("\tSaving pointer of %s into %s\n", Entry->Name, Registers[Register]);
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@ -671,6 +731,7 @@ int AsAddr(struct SymbolTableEntry* Entry) {
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return Register;
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}
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// Assemble a dereference
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int AsDeref(int Reg, int Type) {
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int DestSize = PrimitiveSize(ValueAt(Type));
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@ -693,6 +754,7 @@ int AsDeref(int Reg, int Type) {
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return Reg;
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}
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// Assemble a store-through-dereference
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int AsStrDeref(int Register1, int Register2, int Type) {
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printf("\tStoring contents of %s into %s through a dereference, type %d\n", Registers[Register1], Registers[Register2], Type);
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@ -711,6 +773,7 @@ int AsStrDeref(int Register1, int Register2, int Type) {
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return Register1;
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}
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// Assemble a global symbol (variable, struct, enum, function, string)
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void AsGlobalSymbol(struct SymbolTableEntry* Entry) {
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int TypeSize;
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@ -732,6 +795,7 @@ void AsGlobalSymbol(struct SymbolTableEntry* Entry) {
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}
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}
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// Assemble a function call, with all associated parameter bumping and stack movement.
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int AsCallWrapper(struct ASTNode* Node) {
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struct ASTNode* CompositeTree = Node->Left;
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int Register, Args = 0;
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@ -747,6 +811,7 @@ int AsCallWrapper(struct ASTNode* Node) {
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return AsCall(Node->Symbol, Args);
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}
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// Copy a function argument from Register to argument Position
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void AsCopyArgs(int Register, int Position) {
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if(Position > 4) { // Args above 4 go on the stack
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fprintf(OutputFile, "\tpushq\t%s\n", Registers[Register]);
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@ -755,6 +820,8 @@ void AsCopyArgs(int Register, int Position) {
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}
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}
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// Assemble an actual function call.
|
||||
// NOTE: this should not be called. Use AsCallWrapper.
|
||||
int AsCall(struct SymbolTableEntry* Entry, int Args) {
|
||||
|
||||
int OutRegister = RetrieveRegister();
|
||||
|
|
@ -771,6 +838,7 @@ int AsCall(struct SymbolTableEntry* Entry, int Args) {
|
|||
return OutRegister;
|
||||
}
|
||||
|
||||
// Assemble a function return.
|
||||
int AsReturn(struct SymbolTableEntry* Entry, int Register) {
|
||||
|
||||
printf("\t\tCreating return for function %s\n", Entry->Name);
|
||||
|
|
@ -794,39 +862,46 @@ int AsReturn(struct SymbolTableEntry* Entry, int Register) {
|
|||
}
|
||||
|
||||
AsJmp(Entry->EndLabel);
|
||||
|
||||
}
|
||||
|
||||
|
||||
// Assemble a =?
|
||||
int AsEqual(int Left, int Right) {
|
||||
// Set the lowest bit if left = right
|
||||
return AsCompare(OP_EQUAL, Left, Right);
|
||||
}
|
||||
|
||||
// Assemble a !=
|
||||
int AsIneq(int Left, int Right) {
|
||||
// Set the lowest bit if left != right
|
||||
return AsCompare(OP_INEQ, Left, Right);
|
||||
}
|
||||
|
||||
// Assemble a <
|
||||
int AsLess(int Left, int Right) {
|
||||
// Set the lowest bit if left < right
|
||||
return AsCompare(OP_LESS, Left, Right);
|
||||
}
|
||||
|
||||
// Assemble a >
|
||||
int AsGreat(int Left, int Right) {
|
||||
// Set the lowest bit if left > right
|
||||
return AsCompare(OP_GREAT, Left, Right);
|
||||
}
|
||||
|
||||
// Assemble a <=
|
||||
int AsLessE(int Left, int Right) {
|
||||
// Set the lowest bit if left <= right
|
||||
return AsCompare(OP_LESSE, Left, Right);
|
||||
}
|
||||
|
||||
// Assemble a =>
|
||||
int AsGreatE(int Left, int Right) {
|
||||
// Set the lowest bit if left => right
|
||||
return AsCompare(OP_GREATE, Left, Right);
|
||||
}
|
||||
|
||||
// Assemble a print statement
|
||||
void AssemblerPrint(int Register) {
|
||||
printf("\t\tPrinting Register %s\n", Registers[Register]);
|
||||
|
||||
|
|
@ -837,34 +912,40 @@ void AssemblerPrint(int Register) {
|
|||
DeallocateRegister(Register);
|
||||
}
|
||||
|
||||
// Assemble a &
|
||||
int AsBitwiseAND(int Left, int Right) {
|
||||
fprintf(OutputFile, "\tandq\t%s, %s\n", Registers[Left], Registers[Right]);
|
||||
DeallocateRegister(Left);
|
||||
return Right;
|
||||
}
|
||||
|
||||
// Assemble a |
|
||||
int AsBitwiseOR(int Left, int Right) {
|
||||
fprintf(OutputFile, "\torq\t%s, %s\n", Registers[Left], Registers[Right]);
|
||||
DeallocateRegister(Left);
|
||||
return Right;
|
||||
}
|
||||
|
||||
// Assemble a ^
|
||||
int AsBitwiseXOR(int Left, int Right) {
|
||||
fprintf(OutputFile, "\txorq\t%s, %s\n", Registers[Left], Registers[Right]);
|
||||
DeallocateRegister(Left);
|
||||
return Right;
|
||||
}
|
||||
|
||||
// Assemble a ~
|
||||
int AsNegate(int Register) {
|
||||
fprintf(OutputFile, "\tnegq\t%s\n", Registers[Register]);
|
||||
return Register;
|
||||
}
|
||||
|
||||
// Assemble a !
|
||||
int AsInvert(int Register) {
|
||||
fprintf(OutputFile, "\tnotq\t%s\n", Registers[Register]);
|
||||
return Register;
|
||||
}
|
||||
|
||||
// Assemble a !
|
||||
int AsBooleanNOT(int Register) {
|
||||
fprintf(OutputFile, "\ttest\t%s, %s\n", Registers[Register], Registers[Register]);
|
||||
fprintf(OutputFile, "\tsete\t%s\n", ByteRegisters[Register]);
|
||||
|
|
@ -872,6 +953,7 @@ int AsBooleanNOT(int Register) {
|
|||
return Register;
|
||||
}
|
||||
|
||||
// Assemble a <<
|
||||
int AsShiftLeft(int Left, int Right) {
|
||||
fprintf(OutputFile, "\tmovb\t%s, \%%cl\n", ByteRegisters[Right]);
|
||||
fprintf(OutputFile, "\tshlq\t\%%cl, %s\n", Registers[Left]);
|
||||
|
|
@ -879,6 +961,7 @@ int AsShiftLeft(int Left, int Right) {
|
|||
return Left;
|
||||
}
|
||||
|
||||
// Assemble a >>
|
||||
int AsShiftRight(int Left, int Right) {
|
||||
fprintf(OutputFile, "\tmovb\t%s, \%%cl\n", ByteRegisters[Right]);
|
||||
fprintf(OutputFile, "\tshrq\t\%%cl, %s\n", Registers[Left]);
|
||||
|
|
@ -886,6 +969,8 @@ int AsShiftRight(int Left, int Right) {
|
|||
return Left;
|
||||
}
|
||||
|
||||
// Assemble a conversion from arbitrary type to boolean.
|
||||
// Facilitates if(ptr)
|
||||
int AsBooleanConvert(int Register, int Operation, int Label) {
|
||||
fprintf(OutputFile, "\ttest\t%s, %s\n", Registers[Register], Registers[Register]);
|
||||
|
||||
|
|
@ -903,6 +988,7 @@ int AsBooleanConvert(int Register, int Operation, int Label) {
|
|||
return Register;
|
||||
}
|
||||
|
||||
// Assemble the start of an assembly file
|
||||
void AssemblerPreamble() {
|
||||
DeallocateAllRegisters();
|
||||
fputs(
|
||||
|
|
@ -912,6 +998,15 @@ void AssemblerPreamble() {
|
|||
OutputFile);
|
||||
}
|
||||
|
||||
/*
|
||||
* Assemble a function block for the Entry.
|
||||
* Handles all stack logic for local variables,
|
||||
* as well as copying parameters out of registers and
|
||||
* into the spill space.
|
||||
*
|
||||
* @param Entry: The function to generate
|
||||
*
|
||||
*/
|
||||
void AsFunctionPreamble(struct SymbolTableEntry* Entry) {
|
||||
char* Name = Entry->Name;
|
||||
struct SymbolTableEntry* Param, *Local;
|
||||
|
|
@ -958,6 +1053,8 @@ void AsFunctionPreamble(struct SymbolTableEntry* Entry) {
|
|||
|
||||
}
|
||||
|
||||
|
||||
// Assemble the epilogue of a function
|
||||
void AsFunctionEpilogue(struct SymbolTableEntry* Entry) {
|
||||
AsLabel(Entry->EndLabel);
|
||||
|
||||
|
|
|
|||
|
|
@ -56,6 +56,14 @@ char* Suffixate(char* String, char Suffix) {
|
|||
* Opens the input and output files,
|
||||
* Parses the global symbols of the file, including function blocks.
|
||||
* Generates the assembly representation of the source code
|
||||
* Saves said assembly into the OutputFile
|
||||
* Returns the name of the file containing the generated assembly.
|
||||
* Note that the Input file must have a valid extension.
|
||||
* For Erythro code, this is .er
|
||||
* The generated assembly will have the extension .s
|
||||
*
|
||||
* @param InputFile: The filename of the Erythro Source code to compile
|
||||
* @return the filename of the generated PECOFF32+ assembly
|
||||
*/
|
||||
char* Compile(char* InputFile) {
|
||||
char* OutputName;
|
||||
|
|
@ -93,6 +101,20 @@ char* Compile(char* InputFile) {
|
|||
return OutputName;
|
||||
}
|
||||
|
||||
/*
|
||||
* Processes the output from the Compile function.
|
||||
* Passes the generated .s file to (currently, as of
|
||||
* 21/01/2021), the GNU GAS assembler, to create an
|
||||
* object file.
|
||||
*
|
||||
* It does this by invoking the command on a shell.
|
||||
* TODO: fork it?
|
||||
*
|
||||
* @param InputFile: The .s assembly file to be processed
|
||||
* @output the name of the generated object file.
|
||||
*
|
||||
*/
|
||||
|
||||
char* Assemble(char* InputFile) {
|
||||
char Command[TEXTLEN];
|
||||
int Error;
|
||||
|
|
@ -116,6 +138,18 @@ char* Assemble(char* InputFile) {
|
|||
return OutputName;
|
||||
}
|
||||
|
||||
/*
|
||||
* Processes the outputted object files, turning them into an executable.
|
||||
* It does this by invoking (currently, as of 21/01/2021) the GNU GCC
|
||||
* compiler.
|
||||
* It invokes GCC rather than LD so that it automatically links against
|
||||
* libc and the CRT natives.
|
||||
*
|
||||
* @param Output: The desired name for the executable.
|
||||
* @param Objects: A list of the Object files to be linked.
|
||||
*
|
||||
*/
|
||||
|
||||
void Link(char* Output, char* Objects[]) {
|
||||
int Count, Size = TEXTLEN, Error;
|
||||
char Command[TEXTLEN], *CommandPtr;
|
||||
|
|
@ -143,7 +177,16 @@ void Link(char* Output, char* Objects[]) {
|
|||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Prints information about the available flags and
|
||||
* how to structure the command.
|
||||
* @param ProgName: The name of the file that was
|
||||
* attempted to run.
|
||||
*/
|
||||
|
||||
void DisplayUsage(char* ProgName) {
|
||||
fprintf(stderr, "Erythro Compiler v5 - Gemwire Institute\n");
|
||||
fprintf(stderr, "***************************************\n");
|
||||
fprintf(stderr, "Usage: %s -[vcST] {-o output} file [file ...]\n", ProgName);
|
||||
fprintf(stderr, " -v: Verbose Output Level\n");
|
||||
fprintf(stderr, " -c: Compile without Linking\n");
|
||||
|
|
|
|||
|
|
@ -12,6 +12,9 @@ static int GenerateSrg() {
|
|||
return srgId++;
|
||||
}
|
||||
|
||||
/*
|
||||
* Walk the Node tree, and dump the AST tree to stdout.
|
||||
*/
|
||||
void DumpTree(struct ASTNode* Node, int level) {
|
||||
int Lfalse, Lstart, Lend;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user