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annotate lwasm/instab.h @ 333:507f442dc71e
Add support for 6800 compatibility instructions.
The occasional program uses the 6800 compatibility instructions since they
are actually specified by Motorola in at least some documentation. They
advertised the 6809 as source compatible with the 6800.
This mode is not enabled by default, however. It is my belief that receiving
an error when using a non-6809 instruction is more useful since it is
unlikely that much 6800 source code is being assembled for the 6809 these
days. Nevertheless, the --6809compat option is present for just those
purposes so one does not have to resort to using macros (which would work
equally well in most cases).
author | William Astle <lost@l-w.ca> |
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date | Tue, 15 Apr 2014 10:57:34 -0600 |
parents | 697bc543368c |
children | c6d2a1f54e0c |
rev | line source |
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1 /* |
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2 instab.h |
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3 Copyright © 2008 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 Contains definitions for the instruction table |
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22 */ |
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23 |
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24 #ifndef __instab_h_seen__ |
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25 #define __instab_h_seen__ |
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26 |
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27 #include "lwasm.h" |
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28 |
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29 typedef struct |
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30 { |
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31 char *opcode; /* the mneumonic */ |
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32 int ops[4]; /* opcode values for up to four addr modes */ |
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33 void (*parse)(asmstate_t *as, line_t *l, char **optr); /* parse operand for insn */ |
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34 void (*resolve)(asmstate_t *as, line_t *l, int force); /* resolve instruction to code */ |
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35 void (*emit)(asmstate_t *as, line_t *l); /* resolve instruction to code */ |
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36 int flags; /* flag for this instruction */ |
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37 } instab_t; |
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38 |
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39 enum |
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40 { |
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41 lwasm_insn_cond = 1, /* conditional instruction */ |
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42 lwasm_insn_endm = 2, /* end of macro */ |
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43 lwasm_insn_setsym = 4, /* insn sets symbol address */ |
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44 lwasm_insn_is6309 = 8, /* insn is 6309 only */ |
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45 lwasm_insn_struct = 16, /* insn allowed in a struct */ |
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46 lwasm_insn_setdata = 32, /* insn uses the data address for symbols */ |
333
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47 lwasm_insn_is6800 = 64, /* insn is a 6800 compatibility operation */ |
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48 lwasm_insn_normal = 0 |
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49 }; |
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50 |
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51 |
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52 #define PARSEFUNC(fn) void (fn)(asmstate_t *as, line_t *l, char **p) |
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53 #define RESOLVEFUNC(fn) void (fn)(asmstate_t *as, line_t *l, int force) |
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54 #define EMITFUNC(fn) void (fn)(asmstate_t *as, line_t *l) |
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55 |
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56 #ifndef __instab_c_seen__ |
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57 extern instab_t instab[]; |
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58 #endif //__instab_c_seen__ |
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59 |
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60 #endif //__instab_h_seen__ |