Mercurial > hg-old > index.cgi
diff old-trunk/lwasm/old/insn_rlist.c @ 339:eb230fa7d28e
Prepare for migration to hg
author | lost |
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date | Fri, 19 Mar 2010 02:54:14 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/old-trunk/lwasm/old/insn_rlist.c Fri Mar 19 02:54:14 2010 +0000 @@ -0,0 +1,62 @@ +/* +insn_rlist.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/>. +*/ + +/* +for handling inherent mode instructions +*/ + +#define __insn_rlist_c_seen__ +#include <config.h> +#include "lwasm.h" +#include "instab.h" + +OPFUNC(insn_rlist) +{ + int rb = 0; + int rn; + static const char *regs = "CCA B DPX Y U PCD S "; + + lwasm_emitop(as, l, instab[opnum].ops[0]); + while (**p && !isspace(**p)) + { + rn = lwasm_lookupreg2(regs, p); + if (rn < 0) + { + register_error(as, l, 1, "Bad register '%s'", *p); + lwasm_emit(as, l, 0); + return; + } + if (**p && **p != ',' && !isspace(**p)) + { + register_error(as, l, 1, "Bad operand"); + lwasm_emit(as, l, 0); + } + if (**p == ',') + (*p)++; + if (rn == 8) + rn = 6; + else if (rn == 9) + rn = 0x40; + else + rn = 1 << rn; + rb |= rn; + } + lwasm_emit(as, l, rb); +}