1 | #!/usr/bin/env python3
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2 |
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3 | from sys import stdout
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4 | from pycparser import c_ast, c_generator, parse_file
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5 |
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6 | cross_gcc = "/opt/cross-m68k/bin/m68k-none-elf-gcc"
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7 |
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8 | class Visitor(c_ast.NodeVisitor):
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9 | gen = c_generator.CGenerator()
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10 |
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11 | def __init__(self):
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12 | self.path = None
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13 |
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14 | self.calls = {}
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15 | self.knows = {}
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16 |
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17 | self.declares = {}
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18 | self.in_header = {}
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19 |
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20 | self.decl = {}
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21 |
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22 | self.max_decl = {}
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23 | self.max_head = {}
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24 |
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25 | self.fix_head = {}
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26 | self.fix_decl = {}
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27 |
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28 | def visit_FuncCall(self, node):
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29 | if node.coord.file != self.path:
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30 | return
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31 |
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32 | if type(node.name) is not c_ast.ID:
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33 | return
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34 |
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35 | if self.path not in self.calls:
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36 | self.calls[self.path] = set()
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37 |
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38 | self.calls[self.path].add(node.name.name)
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39 | self.generic_visit(node)
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40 |
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41 | def visit_path(self, path, ast):
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42 | self.path = path
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43 | self.visit(ast)
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44 | self.path = None
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45 |
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46 | for node in ast.ext:
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47 | if type(node) is not c_ast.FuncDef:
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48 | continue
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49 |
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50 | node.decl.storage = []
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51 | decl = self.gen.visit(node.decl)
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52 |
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53 | if node.decl.name in self.decl and \
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54 | self.decl[node.decl.name] != decl:
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55 | raise Exception("declaration mismatch: {} vs. {}". \
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56 | format(self.decl[node.decl.name], decl))
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57 |
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58 | self.decl[node.decl.name] = decl
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59 |
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60 | for node in ast.ext:
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61 | if type(node) is c_ast.Decl and \
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62 | type(node.type) is c_ast.FuncDecl:
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63 | decl = node
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64 |
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65 | elif type(node) is c_ast.FuncDef:
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66 | decl = node.decl
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67 |
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68 | else:
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69 | continue
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70 |
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71 | if path not in self.knows:
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72 | self.knows[path] = set()
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73 |
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74 | self.knows[path].add(decl.name)
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75 |
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76 | if decl.coord.file != path:
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77 | continue
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78 |
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79 | if type(node) is c_ast.Decl:
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80 | if path not in self.max_decl:
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81 | self.max_decl[path] = -1;
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82 |
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83 | if decl.coord.line > self.max_decl[path]:
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84 | self.max_decl[path] = decl.coord.line
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85 |
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86 | if path not in self.declares:
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87 | self.declares[path] = set()
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88 |
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89 | self.declares[path].add(decl.name)
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90 |
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91 | if path[-2:] == ".h":
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92 | if decl.name in self.in_header:
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93 | raise Exception("duplicate definition of {}".format(decl.name))
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94 |
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95 | self.in_header[decl.name] = path
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96 |
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97 | def fix(self):
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98 | for path, calls in sorted(self.calls.items()):
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99 | knows = self.knows[path]
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100 | needs = calls - knows
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101 |
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102 | for need in sorted(needs):
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103 | if need in self.in_header:
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104 | if path not in self.fix_head:
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105 | self.fix_head[path] = set()
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106 |
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107 | self.fix_head[path].add(self.in_header[need])
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108 |
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109 | else:
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110 | if path not in self.fix_decl:
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111 | self.fix_decl[path] = set()
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112 |
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113 | self.fix_decl[path].add(self.decl[need])
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114 |
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115 | no = 1
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116 |
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117 | with open(path, "r") as f:
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118 | for line in f:
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119 | if len(line) >= 8 and line[:8] == "#include":
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120 | self.max_head[path] = no
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121 |
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122 | no += 1
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123 |
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124 | for path, _ in sorted(self.calls.items()):
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125 | if path not in self.fix_head and path not in self.fix_decl:
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126 | continue
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127 |
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128 | max_head = self.max_head[path] if path in self.max_head else None
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129 | max_decl = self.max_decl[path] if path in self.max_decl else None
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130 |
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131 | if max_head is None:
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132 | max_head = max_decl
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133 |
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134 | if max_decl is None:
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135 | max_decl = max_head
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136 |
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137 | no = 1
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138 | out = []
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139 | extern = "extern "
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140 |
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141 | with open(path, "r") as f:
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142 | for line in f:
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143 | out.append(line)
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144 |
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145 | if "extern\t" in line:
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146 | extern = "extern\t"
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147 |
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148 | if no == max_head and path in self.fix_head:
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149 | out.append("\n")
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150 |
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151 | for head in sorted(self.fix_head[path]):
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152 | out.append("#include \"{}\"\n".format(head.split("/")[-1]))
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153 |
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154 | if no == max_decl and path in self.fix_decl:
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155 | out.append("\n")
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156 |
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157 | for decl in sorted(self.fix_decl[path]):
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158 | out.append(extern + decl + ";\n")
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159 |
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160 | no += 1
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161 |
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162 | with open(path, "w") as f:
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163 | for line in out:
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164 | f.write(line)
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165 |
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166 | vis = Visitor()
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167 |
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168 | with open("misc/c-files.txt", "r") as f:
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169 | for path in f:
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170 | path = path.rstrip()
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171 |
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172 | if path == "ram/wdfield.c": # breaks pycparser
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173 | continue
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174 |
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175 | stdout.write("parsing {} \r".format(path))
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176 | stdout.flush()
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177 |
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178 | ast = parse_file(path, use_cpp = True, cpp_path = cross_gcc,
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179 | cpp_args = ["-E", "-I", "include", "-include", "predef.h"])
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180 | # ast.show()
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181 |
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182 | vis.visit_path(path, ast)
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183 |
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184 | print("")
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185 |
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186 | vis.fix()
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