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annotate lwasm/pass7.c @ 542:f3018ed5e30e

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Fix listing to not rely on undefined memory before the start of instab This is exactly the same bug that affected symbol value registration and was fixed in changeset 65c2085e0398. This time, fix it when creating listings.
author William Astle <lost@l-w.ca>
date Wed, 17 Aug 2022 17:06:30 -0600
parents 71f507f404f1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 pass7.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 emit pass
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33
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34 Generate object code
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35 */
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36 void do_pass7(asmstate_t *as)
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37 {
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38 line_t *cl;
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39
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40 for (cl = as -> line_head; cl; cl = cl -> next)
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41 {
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42 as -> cl = cl;
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43 if (cl -> insn != -1)
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44 {
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45 if (instab[cl -> insn].emit)
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46 {
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47 (instab[cl -> insn].emit)(as, cl);
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48 }
375
71f507f404f1 Add "testmode" pragma
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49
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50 if (CURPRAGMA(cl, PRAGMA_TESTMODE))
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51 {
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52 char* buf;
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53 int len;
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54 lwasm_testflags_t flags;
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55 lwasm_errorcode_t err;
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56
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57 lwasm_parse_testmode_comment(cl, &flags, &err, &len, &buf);
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58
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59 if (flags == TF_ERROR && cl -> err_testmode == 0)
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60 {
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61 char s[128];
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62 sprintf(s, "expected %d but assembled OK", err);
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63 lwasm_error_testmode(cl, s, 0);
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64 }
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65
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66 if (flags == TF_EMIT)
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67 {
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68 if (cl -> len != len) lwasm_error_testmode(cl, "incorrect assembly (wrong length)", 0);
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69 if (memcmp(buf, cl -> output, len) != 0) lwasm_error_testmode(cl, "incorrect assembly", 0);
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70 lw_free(buf);
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71 }
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72 }
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74 }
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75 }