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annotate helpers/makeline.c @ 680:ee3ac8c617cb

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armio.c: set GPIO2 output high initially On TI-canonical platforms GPIO2 is DCD modem control output. In TI's original code the AI_InitIOConfig() function called from Init_Target() would configure GPIO2 as an output and set the initial output value to low, but then the init code in uartfax.c called from Init_Serial_Flows() would immediately change it to high, corresponding to DCD not asserted. The result is a momentary asserted-state glitch on the DCD output. The present change eliminates this glitch, setting DCD output to not-asserted initially like it should be.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 25 Jun 2020 03:17:43 +0000
parents 352f80da6813
children
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9
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1 /*
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2 * This helper utility for the FreeCalypso Magnetite build system
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3 * emits potentially long generated Makefile lines, breaking them into
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4 * multiple lines with backslashes.
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11
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12 int is_cmd, equ_or_colon, extra_indent;
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13 int linelen;
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14
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15 main(argc, argv)
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16 char **argv;
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17 {
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18 char **ap;
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19
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20 if (argc < 4) {
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21 fprintf(stderr, "error: too few arguments\n", argv[0]);
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22 exit(1);
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23 }
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24 if (!strcmp(argv[1], "def")) {
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25 is_cmd = 0;
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26 equ_or_colon = '=';
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27 extra_indent = 0;
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28 } else if (!strcmp(argv[1], "dep")) {
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29 is_cmd = 0;
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30 equ_or_colon = ':';
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31 extra_indent = 1;
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32 } else if (!strcmp(argv[1], "cmd")) {
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33 is_cmd = 1;
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34 extra_indent = 1;
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35 } else {
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36 fprintf(stderr, "error: line type \"%s\" not known\n", argv[1]);
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37 exit(1);
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38 }
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39 if (is_cmd) {
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40 putchar('\t');
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41 linelen = 8;
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42 } else
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43 linelen = 0;
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44 fputs(argv[2], stdout);
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45 linelen += strlen(argv[2]);
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46 if (is_cmd) {
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47 putchar(' ');
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48 linelen++;
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49 } else {
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50 putchar(equ_or_colon);
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51 linelen++;
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52 putchar('\t');
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53 do
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54 linelen++;
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55 while (linelen & 7);
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56 }
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57 fputs(argv[3], stdout);
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58 linelen += strlen(argv[3]);
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59 for (ap = argv + 4; *ap; ap++) {
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60 if (linelen + 1 + strlen(*ap) <= 78) {
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61 putchar(' ');
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62 linelen++;
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63 } else {
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64 fputs(" \\\n\t", stdout);
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65 linelen = 8;
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66 if (extra_indent) {
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67 fputs(" ", stdout);
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68 linelen += 4;
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69 }
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70 }
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71 fputs(*ap, stdout);
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72 linelen += strlen(*ap);
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73 }
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74 putchar('\n');
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75 exit(0);
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76 }