mirror of
https://github.com/pnx/m16vm
synced 2026-06-17 03:50:03 +02:00
move /src/as to /as and /src to /vm
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parent
8ef4c7edcd
commit
d73e2ab710
25 changed files with 6 additions and 6 deletions
95
src/as/ast.c
95
src/as/ast.c
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#include <string.h>
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#include <stdlib.h>
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#include <vector.h>
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#include <stdio.h>
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#include "ast.h"
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void ast_init(struct ast* ast) {
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vector_init(&ast->instr, 16 * sizeof(struct ast));
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vector_init(&ast->labels, 16 * sizeof(char**));
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ast->symbols = symtab_init();
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}
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void ast_free(struct ast* ast) {
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int i;
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// Free all label strings
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for(int i = 0; i < ast->labels.size; i += sizeof(char**)) {
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char *ptr = *((char**) ast->labels.base + i);
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free(ptr);
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}
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vector_destory(&ast->labels);
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vector_destory(&ast->instr);
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symtab_free(ast->symbols);
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}
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void ast_instr(struct ast* ast, uint8_t opcode) {
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struct ast_instr instr = { 0 };
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instr.opcode = opcode;
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vector_append(&ast->instr, &instr, sizeof(struct ast_instr));
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}
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void ast_instr_operand(struct ast* ast, enum ast_datatype type, void* value) {
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struct ast_instr *instr;
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if (ast->instr.size < 1)
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return;
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// Fetch latest instruction.
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instr = ast->instr.base + (ast->instr.size - sizeof(struct ast_instr));
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if (instr->n_operands < 3) {
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struct ast_instr_operand *n = instr->operands + instr->n_operands;
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n->type = type;
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if (n->type == DATATYPE_STRING) {
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n->s = strdup(value);
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vector_append(&ast->labels, &n->s, sizeof(char**));
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} else {
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n->r = ((intptr_t) value) & 0xFF;
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}
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instr->n_operands++;
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}
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}
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void ast_location(struct ast* ast, const char *label, uint16_t loc) {
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symtab_set(ast->symbols, label, loc);
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}
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void ast_print(struct ast* ast) {
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printf("{\n");
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for(int i = 0; i < ast->instr.size; i += sizeof(struct ast_instr)) {
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struct ast_instr *instr = ast->instr.base + i;
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printf("\topcode: %u", instr->opcode);
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for(int j = 0; j < instr->n_operands; j++) {
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struct ast_instr_operand *op = instr->operands + j;
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printf(", operand%i: ", j);
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switch(op->type) {
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case DATATYPE_REGISTER :
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printf("%u (reg)", op->r);
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break;
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case DATATYPE_NUMBER :
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printf("%i (num)", op->n);
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break;
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case DATATYPE_STRING :
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printf("%s (string)", op->s);
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break;
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}
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}
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printf("\n");
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}
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printf("}\n");
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}
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