Mercurial > hg-old > index.cgi
diff src/insn_logicmem.c @ 34:b29eec6f3819
Finished adding addressing mode handlers
author | lost |
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date | Fri, 02 Jan 2009 05:17:00 +0000 |
parents | |
children | 538e15927776 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/insn_logicmem.c Fri Jan 02 05:17:00 2009 +0000 @@ -0,0 +1,68 @@ +/* +insn_logicmem.c +Copyright © 2009 William Astle + +This file is part of LWASM. + +LWASM is free software: you can redistribute it and/or modify it under the +terms of the GNU General Public License as published by the Free Software +Foundation, either version 3 of the License, or (at your option) any later +version. + +This program is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +more details. + +You should have received a copy of the GNU General Public License along with +this program. If not, see <http://www.gnu.org/licenses/>. + +Contains code for handling logic/mem instructions +*/ + +#include <ctype.h> +#include <stdio.h> +#include <string.h> + +#include "lwasm.h" +#include "instab.h" +#include "expr.h" + +extern void insn_gen_aux(asmstate_t *as, lwasm_line_t *l, char **optr, int opnum, int extra); + +// for aim, oim, eim, tim +OPFUNC(insn_logicmem) +{ + int rval, v1; + const char *p2; + lwasm_expr_stack_t *s; + + if (**p == '#') + (*p)++; + + s = lwasm_expr_eval(*p, &p2); + *p = (char *)p2; + + if (!s) + { + register_error(as, l, 1, "Bad expression"); + return; + } + + if (v1 < -128 || v1 > 255) + { + register_error(as, l, 2, "Byte overflow"); + v1 &= 0xff; + } + + if (**p != ',' && **p != ';') + { + register_error(as, l, 1, "Bad operand"); + return; + } + + (*p)++; + + // now we have a general addressing mode - call for it + insn_gen_aux(as, l, p, opnum, v1 & 0xff); +}