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111
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1 /* Marshalling and unmarshalling.
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145
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2 Copyright (C) 2014-2020 Free Software Foundation, Inc.
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111
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #include <cc1plugin-config.h>
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21 #include <new>
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22 #include <string.h>
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23 #include "marshall.hh"
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24 #include "connection.hh"
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25
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26 cc1_plugin::status
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27 cc1_plugin::unmarshall_check (connection *conn, unsigned long long check)
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28 {
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29 unsigned long long r;
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30
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31 if (!unmarshall (conn, &r))
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32 return FAIL;
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33 return check == r ? OK : FAIL;
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34 }
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35
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36 cc1_plugin::status
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37 cc1_plugin::marshall_intlike (connection *conn, unsigned long long val)
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38 {
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39 if (!conn->send ('i'))
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40 return FAIL;
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41 return conn->send (&val, sizeof (val));
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42 }
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43
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44 cc1_plugin::status
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45 cc1_plugin::unmarshall_intlike (connection *conn, unsigned long long *result)
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46 {
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47 if (!conn->require ('i'))
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48 return FAIL;
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49 return conn->get (result, sizeof (*result));
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50 }
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51
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52 cc1_plugin::status
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53 cc1_plugin::marshall (connection *conn, const char *str)
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54 {
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55 if (!conn->send ('s'))
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56 return FAIL;
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57
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58 unsigned long long len = str == NULL ? -1ULL : strlen (str);
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59 if (!conn->send (&len, sizeof (len)))
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60 return FAIL;
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61
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62 if (str == NULL)
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63 return OK;
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64
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65 return conn->send (str, len);
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66 }
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67
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68 cc1_plugin::status
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69 cc1_plugin::unmarshall (connection *conn, char **result)
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70 {
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71 unsigned long long len;
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72
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73 if (!conn->require ('s'))
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74 return FAIL;
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75 if (!conn->get (&len, sizeof (len)))
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76 return FAIL;
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77
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78 if (len == -1ULL)
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79 {
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80 *result = NULL;
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81 return OK;
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82 }
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83
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84 char *str = new (std::nothrow) char[len + 1];
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85 if (str == NULL)
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86 return FAIL;
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87
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88 if (!conn->get (str, len))
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89 {
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90 delete[] str;
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91 return FAIL;
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92 }
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93
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94 str[len] = '\0';
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95 *result = str;
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96
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97 return OK;
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98 }
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99
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100 cc1_plugin::status
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101 cc1_plugin::marshall_array_start (connection *conn, char id,
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102 size_t n_elements)
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103 {
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104 if (!conn->send (id))
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105 return FAIL;
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106
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107 unsigned long long r = n_elements;
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108 if (!conn->send (&r, sizeof (r)))
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109 return FAIL;
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110
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111 return OK;
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112 }
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113
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114 cc1_plugin::status
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115 cc1_plugin::marshall_array_elmts (connection *conn, size_t n_bytes,
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116 void *elements)
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117 {
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118 return conn->send (elements, n_bytes);
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119 }
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120
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121 cc1_plugin::status
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122 cc1_plugin::unmarshall_array_start (connection *conn, char id,
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123 size_t *n_elements)
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124 {
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125 unsigned long long len;
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126
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127 if (!conn->require (id))
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128 return FAIL;
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129 if (!conn->get (&len, sizeof (len)))
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130 return FAIL;
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131
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132 *n_elements = len;
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133
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134 return OK;
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135 }
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136
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137 cc1_plugin::status
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138 cc1_plugin::unmarshall_array_elmts (connection *conn, size_t n_bytes,
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139 void *elements)
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140 {
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141 return conn->get (elements, n_bytes);
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142 }
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143
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144 cc1_plugin::status
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145 cc1_plugin::marshall (connection *conn, const gcc_type_array *a)
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146 {
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147 size_t len;
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148
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149 if (a)
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150 len = a->n_elements;
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151 else
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152 len = (size_t)-1;
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153
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154 if (!marshall_array_start (conn, 'a', len))
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155 return FAIL;
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156
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157 if (!a)
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158 return OK;
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159
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160 return marshall_array_elmts (conn, len * sizeof (a->elements[0]),
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161 a->elements);
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162 }
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163
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164 cc1_plugin::status
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165 cc1_plugin::unmarshall (connection *conn, gcc_type_array **result)
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166 {
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167 size_t len;
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168
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169 if (!unmarshall_array_start (conn, 'a', &len))
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170 return FAIL;
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171
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172 if (len == (size_t)-1)
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173 {
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174 *result = NULL;
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175 return OK;
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176 }
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177
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178 gcc_type_array *gta = new gcc_type_array;
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179
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180 gta->n_elements = len;
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181 gta->elements = new gcc_type[len];
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182
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183 if (!unmarshall_array_elmts (conn,
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184 len * sizeof (gta->elements[0]),
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185 gta->elements))
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186 {
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187 delete[] gta->elements;
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188 delete *result;
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189 return FAIL;
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190 }
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191
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192 *result = gta;
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193
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194 return OK;
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195 }
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