i386-asm.c: Do bit-check for OP_SEG in asm_opcode

Fix a bug with "call *%%gs:16", which sets the two flags OP_INDIR and OP_SEG in pop->type.

Stefan committed 1 year ago

Commit 9dc59f91 parent de8c19e1 file · +2 −2Browse files

Unified · Split

i386-asm.c+2−2

@@ -722,7 +722,7 @@ ST_FUNC void asm_opcode(TCCState *s1, int opcode) · 721 unmodified lines
722	}	722	}
723	parse_operand(s1, pop);	723	parse_operand(s1, pop);
724	if (tok == ':') {	724	if (tok == ':') {
725	if (pop->type != OP_SEG \|\| seg_prefix)	725	if (!(pop->type & OP_SEG) \|\| seg_prefix)
726	tcc_error("incorrect prefix");	726	tcc_error("incorrect prefix");
727	seg_prefix = segment_prefixes[pop->reg];	727	seg_prefix = segment_prefixes[pop->reg];
728	next();	728	next();
@@ -852,7 +852,7 @@ again: · 123 unmodified lines
852	if (opcode >= TOK_ASM_first && opcode <= TOK_ASM_last) {	852	if (opcode >= TOK_ASM_first && opcode <= TOK_ASM_last) {
853	int b;	853	int b;
854	b = op0_codes[opcode - TOK_ASM_first];	854	b = op0_codes[opcode - TOK_ASM_first];
855	if (b & 0xff00)	855	if (b & 0xff00)
856	g(b >> 8);	856	g(b >> 8);
857	g(b);	857	g(b);
858	return;	858	return;