Mercurial > hg > index.cgi
view lwasm/insn_inh.c @ 377:67373a053c49
Add ?rts target for branch instructions
Add a ?rts target for branch instructions, which brances to the nearest RTS
or inverts the branch logic to branch around a generated RTS. Activated by a
pragma "qrts".
Thanks to Erik G <erik@6809.org> for the patch.
author | William Astle <lost@l-w.ca> |
---|---|
date | Mon, 13 Jul 2015 20:50:02 -0600 |
parents | 35d4213e6657 |
children | 4fd16faa4d93 |
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/* insn_inh.c Copyright © 2010 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/>. */ #include "lwasm.h" #include "instab.h" PARSEFUNC(insn_parse_inh) { l -> len = OPLEN(instab[l -> insn].ops[0]); skip_operand(p); } EMITFUNC(insn_emit_inh) { lwasm_emitop(l, instab[l -> insn].ops[0]); } PARSEFUNC(insn_parse_inh6800) { // there may be two operations here so check for both l -> len = OPLEN(instab[l -> insn].ops[0]); if (instab[l -> insn].ops[1] >= 0) l -> len += OPLEN(instab[l -> insn].ops[1]); } EMITFUNC(insn_emit_inh6800) { // there may be two operations here so check for both lwasm_emitop(l, instab[l -> insn].ops[0]); if (instab[l -> insn].ops[1] >= 0) lwasm_emitop(l, instab[l -> insn].ops[1]); l -> cycle_adj = instab[l -> insn].ops[3]; }