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annotate lwasm/insn_logicmem.c @ 374:8e25147c2aa8
Clean up various "externs"
Apparently some compilers seriously choke on the "extern" keyword in some
circumstances where GCC does not. Remove most instances of "extern" to guard
against that.
Thanks to Erik G <erik@6809.org> for the patch.
author | William Astle <lost@l-w.ca> |
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date | Mon, 13 Jul 2015 20:31:56 -0600 |
parents | 8764142b3192 |
children | b20f14edda5a |
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1 /* |
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2 insn_logicmem.c |
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3 Copyright © 2009 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 Contains code for handling logic/mem instructions |
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21 */ |
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22 |
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23 #include <ctype.h> |
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24 #include <stdio.h> |
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25 #include <string.h> |
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26 |
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27 #include <lw_expr.h> |
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28 |
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29 #include "lwasm.h" |
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30 #include "instab.h" |
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31 |
374 | 32 void insn_parse_gen_aux(asmstate_t *as, line_t *l, char **optr, int elen); |
33 void insn_resolve_gen_aux(asmstate_t *as, line_t *l, int force, int elen); | |
34 void insn_emit_gen_aux(asmstate_t *as, line_t *l, int extra); | |
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35 |
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36 // for aim, oim, eim, tim |
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37 PARSEFUNC(insn_parse_logicmem) |
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38 { |
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39 // const char *p2; |
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40 lw_expr_t s; |
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41 |
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42 if (**p == '#') |
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43 (*p)++; |
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44 |
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45 s = lwasm_parse_expr(as, p); |
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46 if (!s) |
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47 { |
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48 lwasm_register_error(as, l, E_OPERAND_BAD); |
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49 return; |
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50 } |
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51 |
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52 lwasm_save_expr(l, 100, s); |
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53 if (**p != ',' && **p != ';') |
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54 { |
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55 lwasm_register_error(as, l, E_OPERAND_BAD); |
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56 return; |
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57 } |
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58 |
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59 (*p)++; |
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60 |
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61 // now we have a general addressing mode - call for it |
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62 insn_parse_gen_aux(as, l, p, 1); |
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63 } |
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64 |
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65 RESOLVEFUNC(insn_resolve_logicmem) |
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66 { |
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67 if (l -> len != -1) |
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68 return; |
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69 |
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70 insn_resolve_gen_aux(as, l, force, 1); |
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71 } |
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72 |
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73 EMITFUNC(insn_emit_logicmem) |
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74 { |
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75 lw_expr_t e; |
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76 int v; |
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77 |
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78 e = lwasm_fetch_expr(l, 100); |
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79 if (!lw_expr_istype(e, lw_expr_type_int)) |
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80 { |
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81 lwasm_register_error(as, l, E_IMMEDIATE_UNRESOLVED); |
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82 return; |
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83 } |
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84 |
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85 v = lw_expr_intval(e); |
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86 /* if (v < -128 || v > 255) |
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87 { |
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88 fprintf(stderr, "BYTE: %d\n", v); |
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89 lwasm_register_error(as, l, E_BYTE_OVERFLOW); |
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90 return; |
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91 } |
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92 */ |
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93 insn_emit_gen_aux(as, l, v & 0xff); |
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94 } |