52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include "a64instruction/a64instruction.h"
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#include "parser.h"
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#include "fileio.h"
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#include "parser.h"
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#include "encode.c"
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static symbol_table *firstPass(a64inst_instruction *instructions, int lineCount);
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int main(int argc, char **argv) {
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// Check the arguments
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if (argc < 3) {
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fprintf(stderr, "Error: A source file and an object output file are required. Syntax: ./assemble <file_in> <file_out>");
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return EXIT_FAILURE;
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}
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// Load the source file into memory
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int lineCount = countLines(argv[1]);
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char **source = readAssemblyFile(argv[1], lineCount);
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// Parse the source file
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a64inst_instruction *instructions = parse(source, lineCount);
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// First Pass: Create the symbol table
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symbol_table *table = firstPass(instructions, lineCount);
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// Second Pass: Encode the instructions into binary
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word *binary = encode(instructions, lineCount, table);
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// Write the binary to the output file
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writeBinaryFile(binary, argv[2], lineCount);
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/* TODO: FREE MEMORY!! */
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return EXIT_SUCCESS;
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}
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static symbol_table *firstPass(a64inst_instruction *instructions, int lineCount) {
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symbol_table *table = st_init();
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int labelCount = 0;
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for (int i = 0; i < lineCount; i++) {
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a64inst_instruction inst = instructions[i];
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if (inst.type == a64inst_LABEL) {
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st_insert(table, inst.data.LabelData.label, (i - (labelCount++)));
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}
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}
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return table;
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}
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