gas2ack filters out .code16

- .code16 tells gnu as to generate 16bit assembly ack requires -mi86 switch

commands/gas2ack/asm86.h

@@ -10,6 +10,7 @@ typedef enum opcode {	/* 80486 opcodes, from the i486 reference manual.
 	DOT_ASSERT,			/* Pseudo's invented */
 	DOT_BASE,
 	DOT_COMM,	DOT_LCOMM,
+	DOT_CODE16,
 	DOT_DATA1,
 	DOT_DATA2,
 	DOT_DATA4,

commands/gas2ack/emit_ack.c

@@ -562,6 +562,8 @@ void ack_emit_instruction(asm86_t *a)
 		assert(a->args->operator == '=');
 		ack_printf("\t%s = ", a->args->name);
 		ack_put_expression(a, a->args->middle, 0);
+	} else if (a->opcode == DOT_CODE16) {
+		/* nothing to be done, makefiles handle this */
 	} else
 	if ((p= opcode2name(a->opcode)) != nil) {
 		char *sep= dialect == ACK ? "" : ";";

commands/gas2ack/parse_gnu.c

@@ -33,6 +33,7 @@ static mnemonic_t mnemtab[] = {
 	{ ".base",	DOT_BASE,	PSEUDO },
 	{ ".bss",	DOT_BSS,	PSEUDO },
 	{ ".byte",	DOT_DATA1,	PSEUDO },
+	{ ".code16",	DOT_CODE16,	PSEUDO },
 	{ ".comm",	DOT_COMM,	PSEUDO },
 	{ ".data",	DOT_DATA,	PSEUDO },
 	{ ".end",	DOT_END,	PSEUDO },
@@ -883,6 +884,8 @@ static asm86_t *gnu_get_statement(void)
 	case JMP:
 	case CALL:
 		break;
+	case DOT_CODE16:
+		break;
 	default:;
 	}
 	skip_token(n+1);