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annotate lwasm/insn_rtor.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> |
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date | Fri, 16 Feb 2018 22:53:46 -0700 |
parents | b20f14edda5a |
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rev | line source |
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1 /* |
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2 insn_rtor.c |
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3 Copyright © 2010 William Astle |
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4 |
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5 This file is part of LWASM. |
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6 |
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7 LWASM is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 */ |
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21 |
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22 #include "lwasm.h" |
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23 #include "instab.h" |
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24 |
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25 PARSEFUNC(insn_parse_rtor) |
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26 { |
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27 int r0, r1; |
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28 |
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29 static const char *regs = "D X Y U S PCW V A B CCDP0 0 E F "; |
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30 static const char *regs9 = "D X Y U S PC A B CCDP "; |
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31 |
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32 // register to register (r0,r1) |
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33 // registers are in order: |
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34 // D,X,Y,U,S,PC,W,V |
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35 // A,B,CC,DP,0,0,E,F |
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36 |
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37 r0 = lwasm_lookupreg2(!CURPRAGMA(l, PRAGMA_6809) ? regs : regs9, p); |
402
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38 lwasm_skip_to_next_token(l, p); |
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39 if (r0 < 0 || *(*p)++ != ',') |
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40 { |
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41 lwasm_register_error(as, l, E_OPERAND_BAD); |
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42 r0 = r1 = 0; |
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43 } |
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44 else |
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45 { |
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46 lwasm_skip_to_next_token(l, p); |
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47 r1 = lwasm_lookupreg2(!CURPRAGMA(l, PRAGMA_6809) ? regs : regs9, p); |
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48 if (r1 < 0) |
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49 { |
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50 lwasm_register_error(as, l, E_OPERAND_BAD); |
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51 r0 = r1 = 0; |
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52 } |
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53 } |
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54 l -> pb = (r0 << 4) | r1; |
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55 l -> len = OPLEN(instab[l -> insn].ops[0]) + 1; |
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56 } |
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57 |
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58 EMITFUNC(insn_emit_rtor) |
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59 { |
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60 lwasm_emitop(l, instab[l -> insn].ops[0]); |
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61 lwasm_emit(l, l -> pb); |
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62 } |