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111
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1 /* Subroutines for log output for Atmel AVR back end.
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145
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2 Copyright (C) 2011-2020 Free Software Foundation, Inc.
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111
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3 Contributed by Georg-Johann Lay (avr@gjlay.de)
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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131
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21 #define IN_TARGET_CODE 1
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22
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111
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23 #include "config.h"
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24 #include "system.h"
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25 #include "coretypes.h"
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26 #include "tm.h"
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27 #include "function.h"
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28 #include "rtl.h"
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29 #include "tree.h"
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30 #include "tree-pass.h" /* for current_pass */
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31 #include "memmodel.h"
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32 #include "tm_p.h"
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33 #include "print-tree.h"
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34
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35 /* This file supplies some functions for AVR back-end developers
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36 with a printf-like interface. The functions are called through
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37 macros `avr_dump', `avr_edump' or `avr_fdump' from avr-protos.h:
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38
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39 avr_fdump (FILE *stream, const char *fmt, ...);
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40 avr_edump (fmt, ...) is a shortcut for avr_fdump (stderr, fmt, ...)
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41 avr_dump (fmt, ...) is a shortcut for avr_fdump (dump_file, fmt, ...)
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42
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43 == known %-codes ==
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44
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45 b: bool
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46 r: rtx
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47 t: tree
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48 T: tree (brief)
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49 C: enum rtx_code
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50 m: machine_mode
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51 R: enum reg_class
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52 L: insn list
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53 H: location_t
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54
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55 == no arguments ==
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56
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57 A: call abort()
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58 f: current_function_name()
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59 F: caller (via __FUNCTION__)
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60 P: Pass name and number
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61 ?: Print caller, current function and pass info
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62 !: Ditto, but only print if in a pass with static pass number,
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63 else return.
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64
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65 == same as printf ==
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66
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67 %: %
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68 c: char
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69 s: string
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70 d: int (decimal)
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71 x: int (hex)
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72 */
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73
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74 /* Set according to -mlog= option. */
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75 avr_log_t avr_log;
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76
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77 /* The worker function implementing the %-codes */
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78 static void avr_log_vadump (FILE*, const char*, va_list);
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79
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80 /* Wrapper for avr_log_vadump. If STREAM is NULL we are called by avr_dump,
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81 i.e. output to dump_file if available. The 2nd argument is __FUNCTION__.
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82 The 3rd argument is the format string. */
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83
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84 int
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85 avr_vdump (FILE *stream, const char *caller, ...)
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86 {
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87 va_list ap;
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88
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131
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89 if (stream == NULL && dump_file)
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90 stream = dump_file;
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91
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92 va_start (ap, caller);
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93 if (stream)
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94 avr_log_vadump (stream, caller, ap);
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95 va_end (ap);
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96
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97 return 1;
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98 }
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99
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100
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101 /* Worker function implementing the %-codes and forwarding to
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102 respective print/dump function. */
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103
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104 static void
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105 avr_log_vadump (FILE *file, const char *caller, va_list ap)
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106 {
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107 char bs[3] = {'\\', '?', '\0'};
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108
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109 /* 3rd proper argument is always the format string. */
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110 const char *fmt = va_arg (ap, const char*);
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111
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112 while (*fmt)
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113 {
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114 switch (*fmt++)
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115 {
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116 default:
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117 fputc (*(fmt-1), file);
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118 break;
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119
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120 case '\\':
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121 bs[1] = *fmt++;
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122 fputs (bs, file);
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123 break;
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124
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125 case '%':
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126 switch (*fmt++)
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127 {
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128 case '%':
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129 fputc ('%', file);
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130 break;
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131
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132 case 't':
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133 {
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134 tree t = va_arg (ap, tree);
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135 if (NULL_TREE == t)
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136 fprintf (file, "<NULL-TREE>");
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137 else
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138 {
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139 if (stderr == file)
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140 debug_tree (t);
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141 else
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142 {
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143 print_node (file, "", t, 0);
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144 putc ('\n', file);
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145 }
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146 }
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147 break;
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148 }
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149
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150 case 'T':
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151 {
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152 tree t = va_arg (ap, tree);
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153 if (NULL_TREE == t)
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154 fprintf (file, "<NULL-TREE>");
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155 else
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156 print_node_brief (file, "", t, 3);
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157 }
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158 break;
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159
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160 case 'd':
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161 fprintf (file, "%d", va_arg (ap, int));
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162 break;
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163
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164 case 'x':
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165 fprintf (file, "%x", va_arg (ap, int));
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166 break;
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167
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168 case 'b':
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169 fprintf (file, "%s", va_arg (ap, int) ? "true" : "false");
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170 break;
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171
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172 case 'c':
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173 fputc (va_arg (ap, int), file);
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174 break;
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175
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176 case 'r':
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177 print_inline_rtx (file, va_arg (ap, rtx), 0);
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178 break;
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179
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180 case 'L':
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181 {
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182 rtx_insn *insn = safe_as_a <rtx_insn *> (va_arg (ap, rtx));
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183
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184 while (insn)
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185 {
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186 print_inline_rtx (file, insn, 0);
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187 fprintf (file, "\n");
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188 insn = NEXT_INSN (insn);
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189 }
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190 break;
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191 }
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192
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193 case 'f':
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194 if (cfun && cfun->decl)
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195 fputs (current_function_name(), file);
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196 break;
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197
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198 case 's':
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199 {
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200 const char *str = va_arg (ap, char*);
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201 fputs (str ? str : "(null)", file);
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202 }
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203 break;
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204
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205 case 'm':
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206 fputs (GET_MODE_NAME ((machine_mode) va_arg (ap, int)),
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207 file);
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208 break;
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209
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210 case 'C':
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211 fputs (rtx_name[va_arg (ap, int)], file);
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212 break;
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213
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214 case 'R':
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215 fputs (reg_class_names[va_arg (ap, int)], file);
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216 break;
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217
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218 case 'F':
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219 fputs (caller, file);
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220 break;
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221
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222 case 'H':
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223 {
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224 location_t loc = va_arg (ap, location_t);
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225
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226 if (BUILTINS_LOCATION == loc)
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227 fprintf (file, "<BUILTIN-LOCATION>");
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228 else if (UNKNOWN_LOCATION == loc)
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229 fprintf (file, "<UNKNOWN-LOCATION>");
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230 else
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231 fprintf (file, "%s:%d",
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232 LOCATION_FILE (loc), LOCATION_LINE (loc));
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233
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234 break;
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235 }
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236
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237 case '!':
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238 if (!current_pass)
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239 return;
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240 /* FALLTHRU */
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241
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242 case '?':
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243 avr_vdump (file, caller, "%F[%f:%P]");
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244 break;
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245
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246 case 'P':
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247 if (current_pass)
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248 fprintf (file, "%s(%d)",
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249 current_pass->name,
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250 current_pass->static_pass_number);
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251 else
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252 fprintf (file, "pass=?");
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253
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254 break;
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255
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256 case 'A':
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257 fflush (file);
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258 abort();
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259
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260 default:
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261 /* Unknown %-code: Stop printing */
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262
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263 fprintf (file, "??? %%%c ???%s\n", *(fmt-1), fmt);
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264 fmt = "";
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265
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266 break;
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267 }
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268 break; /* % */
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269 }
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270 }
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271
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272 fflush (file);
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273 }
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274
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275
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276 /* Called from avr.c:avr_option_override().
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277 Parse argument of -mlog= and set respective fields in avr_log. */
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278
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279 void
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280 avr_log_set_avr_log (void)
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281 {
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282 bool all = TARGET_ALL_DEBUG != 0;
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283
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284 if (all)
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285 avr_log_details = "all";
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286
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287 if (all || avr_log_details)
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288 {
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289 /* Adding , at beginning and end of string makes searching easier. */
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290
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291 char *str = (char*) alloca (3 + strlen (avr_log_details));
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292 bool info;
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293
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294 str[0] = ',';
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295 strcat (stpcpy (str+1, avr_log_details), ",");
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296
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131
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297 all |= strstr (str, ",all,") != NULL;
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298 info = strstr (str, ",?,") != NULL;
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111
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299
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300 if (info)
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301 fprintf (stderr, "\n-mlog=");
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302
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303 #define SET_DUMP_DETAIL(S) \
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304 do { \
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305 avr_log.S = (all || strstr (str, "," #S ",") != NULL); \
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111
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306 if (info) \
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307 fprintf (stderr, #S ","); \
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308 } while (0)
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309
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310 SET_DUMP_DETAIL (address_cost);
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311 SET_DUMP_DETAIL (builtin);
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312 SET_DUMP_DETAIL (constraints);
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313 SET_DUMP_DETAIL (insn_addresses);
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314 SET_DUMP_DETAIL (legitimate_address_p);
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315 SET_DUMP_DETAIL (legitimize_address);
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316 SET_DUMP_DETAIL (legitimize_reload_address);
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317 SET_DUMP_DETAIL (progmem);
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318 SET_DUMP_DETAIL (rtx_costs);
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319
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320 #undef SET_DUMP_DETAIL
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321
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322 if (info)
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323 fprintf (stderr, "?\n\n");
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324 }
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325 }
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