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comparison lwasm/insn_gen.c @ 389:2d9b7ae6c329

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Throw error if address overflows in extended mode This may or may not cause extra problems due to sloppiness in dealing with calculations that overflow in 16 bits. However, presumably it is a good idea so unless something major pops up, it seems like a good idea. Thanks to Erik G <erik@6809.org> for the patch.
author William Astle <lost@l-w.ca>
date Mon, 13 Jul 2015 21:37:49 -0600
parents 17fcd0c3ee45
children b20f14edda5a
comparison
equal deleted inserted replaced
388:f813a56178c0 389:2d9b7ae6c329
109 goto out; 109 goto out;
110 110
111 // if we have a constant now, figure out dp vs nondp 111 // if we have a constant now, figure out dp vs nondp
112 if (lw_expr_istype(s, lw_expr_type_int)) 112 if (lw_expr_istype(s, lw_expr_type_int))
113 { 113 {
114 if (s -> value > 0xffff) lwasm_register_error(as, l, E_BYTE_OVERFLOW);
115
114 v1 = lw_expr_intval(s); 116 v1 = lw_expr_intval(s);
115 if (((v1 >> 8) & 0xff) == (l -> dpval & 0xff)) 117 if (((v1 >> 8) & 0xff) == (l -> dpval & 0xff))
116 { 118 {
117 l -> lint2 = 0; 119 l -> lint2 = 0;
118 goto out; 120 goto out;