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annotate lwasm/pass6.c @ 349:b62af915c2cc

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Fix includebin to use binary mode when emitting the contents of the file. For systems with the stupid distinction between binary and text files (I'm looking at you Windows), actually specify binary mode when reading the include file for a binary include. It worked fine on Linux and other Unix-like systems which treat files as a simple sequence of bytes but on Windows, you get the benefit of 0x1A causing an EOF signal with text mode files which is not helpful.
author William Astle <lost@l-w.ca>
date Sun, 12 Apr 2015 12:11:19 -0600
parents 02804b7c051c
children 8764142b3192
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 pass6.c
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #include <stdio.h>
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23 #include <string.h>
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24
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25 #include <lw_alloc.h>
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26 #include <lw_string.h>
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27
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28 #include "lwasm.h"
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29 #include "instab.h"
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30
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31 /*
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32 Finalize Pass
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33
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34 Reduce all expressions in a final pass.
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35
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36 Observation:
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37
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38 Everything should reduce as far as it is going to in a single pass
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39 because all line addresses are now constant (or section-base offset)
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40 */
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41
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42 static int exprok_aux(lw_expr_t e, void *priv)
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43 {
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44 asmstate_t *as = priv;
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45
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46 if (lw_expr_istype(e, lw_expr_type_int))
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47 return 0;
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48
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49 if (as -> output_format == OUTPUT_OBJ)
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50 {
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51 if (lw_expr_istype(e, lw_expr_type_oper))
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52 return 0;
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53 if (lw_expr_istype(e, lw_expr_type_special) && as -> output_format == OUTPUT_OBJ)
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54 {
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55 int t;
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56 t = lw_expr_specint(e);
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57 if (t == lwasm_expr_secbase || t == lwasm_expr_syment || t == lwasm_expr_import)
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58 return 0;
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59 }
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60 }
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61
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62 return 1;
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63 }
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64
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65 static int exprok(asmstate_t *as, lw_expr_t e)
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66 {
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67 if (lw_expr_testterms(e, exprok_aux, as))
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68 return 0;
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69 return 1;
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70 }
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72
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73 void do_pass6(asmstate_t *as)
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74 {
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75 line_t *cl;
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76 struct line_expr_s *le;
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77
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78 for (cl = as -> line_head; cl; cl = cl -> next)
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79 {
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80 as -> cl = cl;
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81 for (le = cl -> exprs; le; le = le -> next)
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82 {
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83 lwasm_reduce_expr(as, le -> expr);
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84 if (!exprok(as, le -> expr))
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85 {
160
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86 lwasm_register_error(as, cl, "Invalid expression: %s", lw_expr_print(le -> expr));
0
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87 }
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88 }
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89 }
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90 }