FreeCalypso > hg > freecalypso-sw

annotate rvinterf/ctracedec/decode.c @ 992:a7b0b426f9ca

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target-utils: boot ROM UART autodetection revamped The new implementation should work with both the familiar Calypso C035 boot ROM version found in our regular targets as well as the older Calypso F741979B version found on the vintage D-Sample board.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 21:28:41 +0000
parents 4c6e7ada647b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
858
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1 /*
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2 * This module implements the actual decoding of compressed traces.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <ctype.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11
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12 extern char *str2ind_tab_filename;
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13 extern int str2ind_array_size;
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14 extern char **str2ind_orig_strings;
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15 extern char **str2ind_param_strings;
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16
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17 #define MAX_PRINTF_PARAMS 16
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18
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19 static int cindex, cindex_nchars;
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20 static u_char param_bytes_array[256];
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21 static int param_bytes_count;
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22 static char *format_string, *param_type_string;
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23 static int num_printf_params;
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24 static u_long printf_params[MAX_PRINTF_PARAMS];
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25 static char output_buf[2048];
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26
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27 decode_hex_digit(c)
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28 {
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29 if (isdigit(c))
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30 return(c - '0');
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31 else if (isupper(c))
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32 return(c - 'A' + 10);
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33 else
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34 return(c - 'a' + 10);
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35 }
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36
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37 static int
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38 decode_idx_and_params(line)
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39 char *line;
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40 {
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41 char *cp;
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42 u_char *dp;
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43
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44 for (cp = line; isdigit(*cp); cp++)
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45 ;
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46 if (*cp && *cp != ' ')
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47 return(-1);
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48 cindex = atoi(line);
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49 cindex_nchars = cp - line;
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50 for (dp = param_bytes_array; *cp; ) {
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51 if (*cp++ != ' ')
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52 return(-1);
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53 if (!isxdigit(cp[0]) || !isxdigit(cp[1]))
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54 return(-1);
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55 *dp++ = decode_hex_digit(cp[0]) << 4 | decode_hex_digit(cp[1]);
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56 cp += 2;
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57 }
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58 param_bytes_count = dp - param_bytes_array;
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59 return(0);
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60 }
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61
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62 static void
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63 decode_parameters(filename_for_errs, lineno_for_errs)
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64 char *filename_for_errs;
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65 {
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66 int pi, type;
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67 u_char *bp, *endp;
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68
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69 bp = param_bytes_array;
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70 endp = bp + param_bytes_count;
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71 for (pi = 0; pi < num_printf_params; pi++) {
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72 type = param_type_string[pi];
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73 switch (type) {
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74 case 'c':
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75 if (bp >= endp) {
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76 wrong_param_byte_count: fprintf(stderr,
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77 "%s line %d: wrong number of parameter bytes for %s entry #%d\n",
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78 filename_for_errs, lineno_for_errs,
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79 str2ind_tab_filename, cindex);
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80 exit(1);
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81 }
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82 printf_params[pi] = *bp++;
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83 continue;
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84 case 'i':
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85 case 'p':
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86 case '*':
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87 if (bp > endp - 4)
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88 goto wrong_param_byte_count;
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89 printf_params[pi] = (u_long) bp[0] |
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90 (u_long) bp[1] << 8 |
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91 (u_long) bp[2] << 16 |
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92 (u_long) bp[3] << 24;
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93 bp += 4;
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94 continue;
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95 case 's':
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96 printf_params[pi] = (u_long) bp;
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97 for (;;) {
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98 if (bp >= endp) {
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99 fprintf(stderr,
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100 "%s line %d: unterminated string parameter in compressed trace\n",
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101 filename_for_errs,
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102 lineno_for_errs);
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103 exit(1);
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104 }
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105 if (!*bp++)
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106 break;
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107 }
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108 continue;
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109 default:
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110 fprintf(stderr,
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111 "%s entry #%d: parameter type \'%c\' not supported\n",
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112 str2ind_tab_filename, cindex, type);
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113 exit(1);
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114 }
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115 }
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116 if (bp != endp)
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117 goto wrong_param_byte_count;
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118 }
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119
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120 process_ctrace_line(line, cindex_offset, filename_for_errs, lineno_for_errs)
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121 char *line, *filename_for_errs;
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122 {
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123 if (decode_idx_and_params(line + cindex_offset) < 0) {
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124 fprintf(stderr,
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125 "%s line %d: unable to decode compressed trace line\n",
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126 filename_for_errs, lineno_for_errs);
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127 exit(1);
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128 }
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129 if (cindex >= str2ind_array_size) {
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130 fprintf(stderr,
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131 "%s line %d: index %d exceeds the range of %s\n",
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132 filename_for_errs, lineno_for_errs, cindex,
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133 str2ind_tab_filename);
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134 exit(1);
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135 }
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136 format_string = str2ind_orig_strings[cindex];
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137 param_type_string = str2ind_param_strings[cindex];
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138 num_printf_params = strlen(param_type_string);
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139 if (num_printf_params > MAX_PRINTF_PARAMS) {
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140 fprintf(stderr,
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141 "error: entry #%d in %s has too many parameters\n",
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142 cindex, str2ind_tab_filename);
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143 exit(1);
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144 }
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145 decode_parameters(filename_for_errs, lineno_for_errs);
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146 ind2str_doprnt(format_string, printf_params, output_buf);
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147 printf("%.*s \"%s\"\n", cindex_offset + cindex_nchars, line,
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148 output_buf);
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149 return(0);
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150 }