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view lwasm/insn_logicmem.c @ 455:cad5937314cb
Add operandsizewarning pragma
Add operandsizewarning pragma that will raise warnings for certain operands
if the operand size could be smaller. (Long branch used instead of short
branch, for instance.)
author | William Astle <lost@l-w.ca> |
---|---|
date | Fri, 16 Feb 2018 22:53:46 -0700 |
parents | b20f14edda5a |
children |
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/* 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 <lw_expr.h> #include "lwasm.h" #include "instab.h" void insn_parse_gen_aux(asmstate_t *as, line_t *l, char **optr, int elen); void insn_resolve_gen_aux(asmstate_t *as, line_t *l, int force, int elen); void insn_emit_gen_aux(asmstate_t *as, line_t *l, int extra); // for aim, oim, eim, tim PARSEFUNC(insn_parse_logicmem) { // const char *p2; lw_expr_t s; if (**p == '#') (*p)++; s = lwasm_parse_expr(as, p); if (!s) { lwasm_register_error(as, l, E_OPERAND_BAD); return; } lwasm_save_expr(l, 100, s); lwasm_skip_to_next_token(l, p); if (**p != ',' && **p != ';') { lwasm_register_error(as, l, E_OPERAND_BAD); return; } (*p)++; lwasm_skip_to_next_token(l, p); // now we have a general addressing mode - call for it insn_parse_gen_aux(as, l, p, 1); } RESOLVEFUNC(insn_resolve_logicmem) { if (l -> len != -1) return; insn_resolve_gen_aux(as, l, force, 1); } EMITFUNC(insn_emit_logicmem) { lw_expr_t e; int v; e = lwasm_fetch_expr(l, 100); if (!lw_expr_istype(e, lw_expr_type_int)) { lwasm_register_error(as, l, E_IMMEDIATE_UNRESOLVED); return; } v = lw_expr_intval(e); /* if (v < -128 || v > 255) { fprintf(stderr, "BYTE: %d\n", v); lwasm_register_error(as, l, E_BYTE_OVERFLOW); return; } */ insn_emit_gen_aux(as, l, v & 0xff); }