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src/as/parser.c: store address for label declaration in the symbol table.

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Henrik Hautakoski 2018-12-10 21:59:37 +01:00
parent 86293537eb
commit 2b80662967
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GPG key ID: 839F3A7EAFAEAFAA
1 changed files with 11 additions and 2 deletions
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13
src/as/parser.c
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@ -116,6 +116,16 @@ static int match_typeJ(struct lexer* lex, struct ast *ast) {
return 1;
}
// Match \n*<opcode>
static int match_label_decl(struct lexer* lex, struct ast *ast) {
uint16_t location = ast->instr.size / sizeof(struct ast_instr);
ast_location(ast, lex->token.value.s, location);
return 1;
}
#define opcode_guard(op) \
if (op_set == 0) { op_set = 1; ast_instr(ast, op); }
@ -154,8 +164,7 @@ static int parse_line(struct lexer* lex, struct ast *ast) {
case TOKEN_OPCODE_JMP : opcode_guard(OP_JMP);
return match_typeJ(lex, ast);
case TOKEN_LABEL_DECL :
asm_warn(lex->lineno, "labels are not supported yet. ignoring.");
break;
return match_label_decl(lex, ast);
default:
return asm_error(lex->lineno, "Opcode or label expected");
}