90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
// Assm-util.h
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// Utility functions for the SplitBit Assembler's first pass.
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// Written by Anachronaut
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// 10/25/2024
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#ifndef ASSMUTL_H
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#define ASSMUTL_H
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "Assm-util.h"
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#include "assembly.h"
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#define MAX_INCLUDES 128
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// Type values.
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#define UNKNOWN 0
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#define KEYWORD 1
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#define INSTRUCTION 2
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#define LABEL 3
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#define LABEL_DEFINITION 4
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#define VALUE 5
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#define STRING 6
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// A name from the Vector Segment, used as the operand of SWI. It stands for a vector
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// number rather than an address, so it emits one byte where a label emits two.
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#define VECTOR_REFERENCE 7
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// Zero bytes put down to move the cursor along, from #Reserve. How many is known as
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// soon as it is read.
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#define PADDING 8
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// The same, from #Align, where how many depends on where the cursor has got to. The
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// count is worked out in the second pass and the alignment itself is kept in address.
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#define ALIGNMENT 9
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// Keyword values.
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#define KEYWORD_INCLUDE 1
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#define KEYWORD_PROGRAM 2
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#define KEYWORD_DATA 3
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#define KEYWORD_VECTORS 4
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#define KEYWORD_ALIGN 5
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#define KEYWORD_RESERVE 6
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// Destination values.
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#define NOWHERE 0
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#define PROGRAM 1
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#define DATA 2
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// The Vector Segment does not become bytes at an address the way the other two do. It
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// says which handler belongs to which vector, and the assembler works out the rest.
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#define VECTORS 3
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// For colorful text.
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#define RESET "\x1B[0m"
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#define RED "\x1B[31m"
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#define GREEN "\x1B[32m"
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#define YELLOW "\x1B[33m"
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#define BLUE "\x1B[34m"
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#define MAGENTA "\x1B[35m"
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#define CYAN "\x1B[36m"
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#define WHITE "\x1B[37m"
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typedef struct {
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char* token;
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char* fileName;
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int lineNumber;
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uint8_t byteValue;
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uint8_t dataPointer[MAX_DATA_POINTER_OPERANDS]; // Which Data Pointers this instruction works through, if any.
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int byteLength;
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uint16_t address;
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int type; // "KEYWORD", "INSTRUCTION" , "LABEL" , "VALUE", "STRING"
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int destination; // "NOWHERE", "PROGRAM", "DATA"
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} intermediateElement;
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int checkIfKeyword(intermediateElement *currentElement);
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int checkIfInstruction(intermediateElement *currentElement);
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int checkIfLiteralValue(intermediateElement *currentElement);
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int checkIfLabel(intermediateElement *currentElement);
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int readToken(intermediateElement *currentElement, FILE *file, int *lineNumber);
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// Reads a count written the way a literal is, but allowing the full range of an address
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// rather than a single byte. #Align and #Reserve both take one, and neither number is
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// ever emitted as a byte, so there is no reason to hold them to a byte's range.
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uint16_t readCount(intermediateElement *currentElement, const char *what);
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#endif
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