1 | n/a | /* ----------------------------------------------------------------------- |
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2 | n/a | ffi.c - Copyright (c) 2011 Anthony Green |
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3 | n/a | Copyright (c) 2008 David Daney |
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4 | n/a | Copyright (c) 1996, 2007, 2008, 2011 Red Hat, Inc. |
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5 | n/a | |
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6 | n/a | MIPS Foreign Function Interface |
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7 | n/a | |
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8 | n/a | Permission is hereby granted, free of charge, to any person obtaining |
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9 | n/a | a copy of this software and associated documentation files (the |
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10 | n/a | ``Software''), to deal in the Software without restriction, including |
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11 | n/a | without limitation the rights to use, copy, modify, merge, publish, |
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12 | n/a | distribute, sublicense, and/or sell copies of the Software, and to |
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13 | n/a | permit persons to whom the Software is furnished to do so, subject to |
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14 | n/a | the following conditions: |
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15 | n/a | |
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16 | n/a | The above copyright notice and this permission notice shall be included |
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17 | n/a | in all copies or substantial portions of the Software. |
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18 | n/a | |
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19 | n/a | THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, |
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20 | n/a | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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21 | n/a | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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22 | n/a | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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23 | n/a | HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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24 | n/a | WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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25 | n/a | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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26 | n/a | DEALINGS IN THE SOFTWARE. |
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27 | n/a | ----------------------------------------------------------------------- */ |
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28 | n/a | |
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29 | n/a | #include <ffi.h> |
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30 | n/a | #include <ffi_common.h> |
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31 | n/a | |
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32 | n/a | #include <stdlib.h> |
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33 | n/a | |
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34 | n/a | #ifdef __GNUC__ |
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35 | n/a | # if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) |
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36 | n/a | # define USE__BUILTIN___CLEAR_CACHE 1 |
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37 | n/a | # endif |
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38 | n/a | #endif |
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39 | n/a | |
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40 | n/a | #ifndef USE__BUILTIN___CLEAR_CACHE |
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41 | n/a | # if defined(__OpenBSD__) |
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42 | n/a | # include <mips64/sysarch.h> |
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43 | n/a | # else |
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44 | n/a | # include <sys/cachectl.h> |
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45 | n/a | # endif |
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46 | n/a | #endif |
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47 | n/a | |
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48 | n/a | #ifdef FFI_DEBUG |
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49 | n/a | # define FFI_MIPS_STOP_HERE() ffi_stop_here() |
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50 | n/a | #else |
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51 | n/a | # define FFI_MIPS_STOP_HERE() do {} while(0) |
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52 | n/a | #endif |
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53 | n/a | |
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54 | n/a | #ifdef FFI_MIPS_N32 |
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55 | n/a | #define FIX_ARGP \ |
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56 | n/a | FFI_ASSERT(argp <= &stack[bytes]); \ |
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57 | n/a | if (argp == &stack[bytes]) \ |
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58 | n/a | { \ |
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59 | n/a | argp = stack; \ |
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60 | n/a | FFI_MIPS_STOP_HERE(); \ |
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61 | n/a | } |
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62 | n/a | #else |
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63 | n/a | #define FIX_ARGP |
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64 | n/a | #endif |
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65 | n/a | |
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66 | n/a | |
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67 | n/a | /* ffi_prep_args is called by the assembly routine once stack space |
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68 | n/a | has been allocated for the function's arguments */ |
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69 | n/a | |
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70 | n/a | static void ffi_prep_args(char *stack, |
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71 | n/a | extended_cif *ecif, |
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72 | n/a | int bytes, |
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73 | n/a | int flags) |
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74 | n/a | { |
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75 | n/a | int i; |
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76 | n/a | void **p_argv; |
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77 | n/a | char *argp; |
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78 | n/a | ffi_type **p_arg; |
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79 | n/a | |
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80 | n/a | #ifdef FFI_MIPS_N32 |
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81 | n/a | /* If more than 8 double words are used, the remainder go |
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82 | n/a | on the stack. We reorder stuff on the stack here to |
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83 | n/a | support this easily. */ |
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84 | n/a | if (bytes > 8 * sizeof(ffi_arg)) |
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85 | n/a | argp = &stack[bytes - (8 * sizeof(ffi_arg))]; |
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86 | n/a | else |
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87 | n/a | argp = stack; |
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88 | n/a | #else |
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89 | n/a | argp = stack; |
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90 | n/a | #endif |
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91 | n/a | |
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92 | n/a | memset(stack, 0, bytes); |
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93 | n/a | |
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94 | n/a | #ifdef FFI_MIPS_N32 |
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95 | n/a | if ( ecif->cif->rstruct_flag != 0 ) |
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96 | n/a | #else |
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97 | n/a | if ( ecif->cif->rtype->type == FFI_TYPE_STRUCT ) |
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98 | n/a | #endif |
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99 | n/a | { |
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100 | n/a | *(ffi_arg *) argp = (ffi_arg) ecif->rvalue; |
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101 | n/a | argp += sizeof(ffi_arg); |
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102 | n/a | FIX_ARGP; |
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103 | n/a | } |
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104 | n/a | |
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105 | n/a | p_argv = ecif->avalue; |
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106 | n/a | |
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107 | n/a | for (i = 0, p_arg = ecif->cif->arg_types; i < ecif->cif->nargs; i++, p_arg++) |
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108 | n/a | { |
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109 | n/a | size_t z; |
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110 | n/a | unsigned int a; |
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111 | n/a | |
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112 | n/a | /* Align if necessary. */ |
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113 | n/a | a = (*p_arg)->alignment; |
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114 | n/a | if (a < sizeof(ffi_arg)) |
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115 | n/a | a = sizeof(ffi_arg); |
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116 | n/a | |
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117 | n/a | if ((a - 1) & (unsigned long) argp) |
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118 | n/a | { |
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119 | n/a | argp = (char *) ALIGN(argp, a); |
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120 | n/a | FIX_ARGP; |
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121 | n/a | } |
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122 | n/a | |
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123 | n/a | z = (*p_arg)->size; |
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124 | n/a | if (z <= sizeof(ffi_arg)) |
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125 | n/a | { |
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126 | n/a | int type = (*p_arg)->type; |
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127 | n/a | z = sizeof(ffi_arg); |
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128 | n/a | |
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129 | n/a | /* The size of a pointer depends on the ABI */ |
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130 | n/a | if (type == FFI_TYPE_POINTER) |
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131 | n/a | type = (ecif->cif->abi == FFI_N64 |
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132 | n/a | || ecif->cif->abi == FFI_N64_SOFT_FLOAT) |
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133 | n/a | ? FFI_TYPE_SINT64 : FFI_TYPE_SINT32; |
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134 | n/a | |
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135 | n/a | if (i < 8 && (ecif->cif->abi == FFI_N32_SOFT_FLOAT |
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136 | n/a | || ecif->cif->abi == FFI_N64_SOFT_FLOAT)) |
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137 | n/a | { |
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138 | n/a | switch (type) |
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139 | n/a | { |
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140 | n/a | case FFI_TYPE_FLOAT: |
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141 | n/a | type = FFI_TYPE_UINT32; |
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142 | n/a | break; |
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143 | n/a | case FFI_TYPE_DOUBLE: |
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144 | n/a | type = FFI_TYPE_UINT64; |
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145 | n/a | break; |
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146 | n/a | default: |
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147 | n/a | break; |
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148 | n/a | } |
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149 | n/a | } |
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150 | n/a | switch (type) |
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151 | n/a | { |
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152 | n/a | case FFI_TYPE_SINT8: |
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153 | n/a | *(ffi_arg *)argp = *(SINT8 *)(* p_argv); |
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154 | n/a | break; |
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155 | n/a | |
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156 | n/a | case FFI_TYPE_UINT8: |
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157 | n/a | *(ffi_arg *)argp = *(UINT8 *)(* p_argv); |
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158 | n/a | break; |
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159 | n/a | |
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160 | n/a | case FFI_TYPE_SINT16: |
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161 | n/a | *(ffi_arg *)argp = *(SINT16 *)(* p_argv); |
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162 | n/a | break; |
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163 | n/a | |
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164 | n/a | case FFI_TYPE_UINT16: |
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165 | n/a | *(ffi_arg *)argp = *(UINT16 *)(* p_argv); |
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166 | n/a | break; |
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167 | n/a | |
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168 | n/a | case FFI_TYPE_SINT32: |
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169 | n/a | *(ffi_arg *)argp = *(SINT32 *)(* p_argv); |
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170 | n/a | break; |
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171 | n/a | |
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172 | n/a | case FFI_TYPE_UINT32: |
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173 | n/a | #ifdef FFI_MIPS_N32 |
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174 | n/a | /* The N32 ABI requires that 32-bit integers |
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175 | n/a | be sign-extended to 64-bits, regardless of |
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176 | n/a | whether they are signed or unsigned. */ |
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177 | n/a | *(ffi_arg *)argp = *(SINT32 *)(* p_argv); |
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178 | n/a | #else |
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179 | n/a | *(ffi_arg *)argp = *(UINT32 *)(* p_argv); |
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180 | n/a | #endif |
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181 | n/a | break; |
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182 | n/a | |
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183 | n/a | /* This can only happen with 64bit slots. */ |
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184 | n/a | case FFI_TYPE_FLOAT: |
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185 | n/a | *(float *) argp = *(float *)(* p_argv); |
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186 | n/a | break; |
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187 | n/a | |
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188 | n/a | /* Handle structures. */ |
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189 | n/a | default: |
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190 | n/a | memcpy(argp, *p_argv, (*p_arg)->size); |
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191 | n/a | break; |
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192 | n/a | } |
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193 | n/a | } |
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194 | n/a | else |
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195 | n/a | { |
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196 | n/a | #ifdef FFI_MIPS_O32 |
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197 | n/a | memcpy(argp, *p_argv, z); |
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198 | n/a | #else |
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199 | n/a | { |
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200 | n/a | unsigned long end = (unsigned long) argp + z; |
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201 | n/a | unsigned long cap = (unsigned long) stack + bytes; |
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202 | n/a | |
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203 | n/a | /* Check if the data will fit within the register space. |
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204 | n/a | Handle it if it doesn't. */ |
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205 | n/a | |
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206 | n/a | if (end <= cap) |
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207 | n/a | memcpy(argp, *p_argv, z); |
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208 | n/a | else |
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209 | n/a | { |
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210 | n/a | unsigned long portion = cap - (unsigned long)argp; |
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211 | n/a | |
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212 | n/a | memcpy(argp, *p_argv, portion); |
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213 | n/a | argp = stack; |
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214 | n/a | z -= portion; |
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215 | n/a | memcpy(argp, (void*)((unsigned long)(*p_argv) + portion), |
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216 | n/a | z); |
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217 | n/a | } |
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218 | n/a | } |
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219 | n/a | #endif |
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220 | n/a | } |
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221 | n/a | p_argv++; |
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222 | n/a | argp += z; |
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223 | n/a | FIX_ARGP; |
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224 | n/a | } |
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225 | n/a | } |
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226 | n/a | |
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227 | n/a | #ifdef FFI_MIPS_N32 |
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228 | n/a | |
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229 | n/a | /* The n32 spec says that if "a chunk consists solely of a double |
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230 | n/a | float field (but not a double, which is part of a union), it |
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231 | n/a | is passed in a floating point register. Any other chunk is |
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232 | n/a | passed in an integer register". This code traverses structure |
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233 | n/a | definitions and generates the appropriate flags. */ |
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234 | n/a | |
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235 | n/a | static unsigned |
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236 | n/a | calc_n32_struct_flags(int soft_float, ffi_type *arg, |
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237 | n/a | unsigned *loc, unsigned *arg_reg) |
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238 | n/a | { |
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239 | n/a | unsigned flags = 0; |
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240 | n/a | unsigned index = 0; |
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241 | n/a | |
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242 | n/a | ffi_type *e; |
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243 | n/a | |
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244 | n/a | if (soft_float) |
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245 | n/a | return 0; |
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246 | n/a | |
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247 | n/a | while ((e = arg->elements[index])) |
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248 | n/a | { |
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249 | n/a | /* Align this object. */ |
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250 | n/a | *loc = ALIGN(*loc, e->alignment); |
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251 | n/a | if (e->type == FFI_TYPE_DOUBLE) |
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252 | n/a | { |
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253 | n/a | /* Already aligned to FFI_SIZEOF_ARG. */ |
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254 | n/a | *arg_reg = *loc / FFI_SIZEOF_ARG; |
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255 | n/a | if (*arg_reg > 7) |
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256 | n/a | break; |
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257 | n/a | flags += (FFI_TYPE_DOUBLE << (*arg_reg * FFI_FLAG_BITS)); |
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258 | n/a | *loc += e->size; |
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259 | n/a | } |
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260 | n/a | else |
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261 | n/a | *loc += e->size; |
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262 | n/a | index++; |
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263 | n/a | } |
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264 | n/a | /* Next Argument register at alignment of FFI_SIZEOF_ARG. */ |
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265 | n/a | *arg_reg = ALIGN(*loc, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG; |
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266 | n/a | |
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267 | n/a | return flags; |
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268 | n/a | } |
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269 | n/a | |
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270 | n/a | static unsigned |
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271 | n/a | calc_n32_return_struct_flags(int soft_float, ffi_type *arg) |
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272 | n/a | { |
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273 | n/a | unsigned flags = 0; |
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274 | n/a | unsigned small = FFI_TYPE_SMALLSTRUCT; |
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275 | n/a | ffi_type *e; |
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276 | n/a | |
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277 | n/a | /* Returning structures under n32 is a tricky thing. |
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278 | n/a | A struct with only one or two floating point fields |
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279 | n/a | is returned in $f0 (and $f2 if necessary). Any other |
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280 | n/a | struct results at most 128 bits are returned in $2 |
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281 | n/a | (the first 64 bits) and $3 (remainder, if necessary). |
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282 | n/a | Larger structs are handled normally. */ |
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283 | n/a | |
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284 | n/a | if (arg->size > 16) |
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285 | n/a | return 0; |
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286 | n/a | |
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287 | n/a | if (arg->size > 8) |
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288 | n/a | small = FFI_TYPE_SMALLSTRUCT2; |
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289 | n/a | |
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290 | n/a | e = arg->elements[0]; |
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291 | n/a | |
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292 | n/a | if (e->type == FFI_TYPE_DOUBLE) |
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293 | n/a | flags = FFI_TYPE_DOUBLE; |
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294 | n/a | else if (e->type == FFI_TYPE_FLOAT) |
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295 | n/a | flags = FFI_TYPE_FLOAT; |
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296 | n/a | |
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297 | n/a | if (flags && (e = arg->elements[1])) |
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298 | n/a | { |
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299 | n/a | if (e->type == FFI_TYPE_DOUBLE) |
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300 | n/a | flags += FFI_TYPE_DOUBLE << FFI_FLAG_BITS; |
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301 | n/a | else if (e->type == FFI_TYPE_FLOAT) |
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302 | n/a | flags += FFI_TYPE_FLOAT << FFI_FLAG_BITS; |
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303 | n/a | else |
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304 | n/a | return small; |
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305 | n/a | |
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306 | n/a | if (flags && (arg->elements[2])) |
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307 | n/a | { |
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308 | n/a | /* There are three arguments and the first two are |
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309 | n/a | floats! This must be passed the old way. */ |
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310 | n/a | return small; |
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311 | n/a | } |
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312 | n/a | if (soft_float) |
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313 | n/a | flags += FFI_TYPE_STRUCT_SOFT; |
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314 | n/a | } |
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315 | n/a | else |
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316 | n/a | if (!flags) |
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317 | n/a | return small; |
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318 | n/a | |
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319 | n/a | return flags; |
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320 | n/a | } |
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321 | n/a | |
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322 | n/a | #endif |
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323 | n/a | |
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324 | n/a | /* Perform machine dependent cif processing */ |
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325 | n/a | ffi_status ffi_prep_cif_machdep(ffi_cif *cif) |
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326 | n/a | { |
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327 | n/a | cif->flags = 0; |
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328 | n/a | |
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329 | n/a | #ifdef FFI_MIPS_O32 |
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330 | n/a | /* Set the flags necessary for O32 processing. FFI_O32_SOFT_FLOAT |
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331 | n/a | * does not have special handling for floating point args. |
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332 | n/a | */ |
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333 | n/a | |
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334 | n/a | if (cif->rtype->type != FFI_TYPE_STRUCT && cif->abi == FFI_O32) |
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335 | n/a | { |
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336 | n/a | if (cif->nargs > 0) |
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337 | n/a | { |
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338 | n/a | switch ((cif->arg_types)[0]->type) |
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339 | n/a | { |
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340 | n/a | case FFI_TYPE_FLOAT: |
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341 | n/a | case FFI_TYPE_DOUBLE: |
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342 | n/a | cif->flags += (cif->arg_types)[0]->type; |
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343 | n/a | break; |
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344 | n/a | |
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345 | n/a | default: |
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346 | n/a | break; |
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347 | n/a | } |
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348 | n/a | |
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349 | n/a | if (cif->nargs > 1) |
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350 | n/a | { |
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351 | n/a | /* Only handle the second argument if the first |
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352 | n/a | is a float or double. */ |
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353 | n/a | if (cif->flags) |
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354 | n/a | { |
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355 | n/a | switch ((cif->arg_types)[1]->type) |
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356 | n/a | { |
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357 | n/a | case FFI_TYPE_FLOAT: |
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358 | n/a | case FFI_TYPE_DOUBLE: |
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359 | n/a | cif->flags += (cif->arg_types)[1]->type << FFI_FLAG_BITS; |
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360 | n/a | break; |
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361 | n/a | |
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362 | n/a | default: |
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363 | n/a | break; |
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364 | n/a | } |
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365 | n/a | } |
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366 | n/a | } |
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367 | n/a | } |
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368 | n/a | } |
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369 | n/a | |
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370 | n/a | /* Set the return type flag */ |
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371 | n/a | |
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372 | n/a | if (cif->abi == FFI_O32_SOFT_FLOAT) |
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373 | n/a | { |
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374 | n/a | switch (cif->rtype->type) |
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375 | n/a | { |
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376 | n/a | case FFI_TYPE_VOID: |
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377 | n/a | case FFI_TYPE_STRUCT: |
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378 | n/a | cif->flags += cif->rtype->type << (FFI_FLAG_BITS * 2); |
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379 | n/a | break; |
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380 | n/a | |
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381 | n/a | case FFI_TYPE_SINT64: |
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382 | n/a | case FFI_TYPE_UINT64: |
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383 | n/a | case FFI_TYPE_DOUBLE: |
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384 | n/a | cif->flags += FFI_TYPE_UINT64 << (FFI_FLAG_BITS * 2); |
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385 | n/a | break; |
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386 | n/a | |
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387 | n/a | case FFI_TYPE_FLOAT: |
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388 | n/a | default: |
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389 | n/a | cif->flags += FFI_TYPE_INT << (FFI_FLAG_BITS * 2); |
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390 | n/a | break; |
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391 | n/a | } |
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392 | n/a | } |
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393 | n/a | else |
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394 | n/a | { |
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395 | n/a | /* FFI_O32 */ |
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396 | n/a | switch (cif->rtype->type) |
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397 | n/a | { |
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398 | n/a | case FFI_TYPE_VOID: |
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399 | n/a | case FFI_TYPE_STRUCT: |
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400 | n/a | case FFI_TYPE_FLOAT: |
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401 | n/a | case FFI_TYPE_DOUBLE: |
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402 | n/a | cif->flags += cif->rtype->type << (FFI_FLAG_BITS * 2); |
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403 | n/a | break; |
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404 | n/a | |
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405 | n/a | case FFI_TYPE_SINT64: |
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406 | n/a | case FFI_TYPE_UINT64: |
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407 | n/a | cif->flags += FFI_TYPE_UINT64 << (FFI_FLAG_BITS * 2); |
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408 | n/a | break; |
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409 | n/a | |
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410 | n/a | default: |
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411 | n/a | cif->flags += FFI_TYPE_INT << (FFI_FLAG_BITS * 2); |
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412 | n/a | break; |
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413 | n/a | } |
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414 | n/a | } |
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415 | n/a | #endif |
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416 | n/a | |
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417 | n/a | #ifdef FFI_MIPS_N32 |
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418 | n/a | /* Set the flags necessary for N32 processing */ |
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419 | n/a | { |
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420 | n/a | int type; |
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421 | n/a | unsigned arg_reg = 0; |
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422 | n/a | unsigned loc = 0; |
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423 | n/a | unsigned count = (cif->nargs < 8) ? cif->nargs : 8; |
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424 | n/a | unsigned index = 0; |
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425 | n/a | |
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426 | n/a | unsigned struct_flags = 0; |
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427 | n/a | int soft_float = (cif->abi == FFI_N32_SOFT_FLOAT |
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428 | n/a | || cif->abi == FFI_N64_SOFT_FLOAT); |
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429 | n/a | |
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430 | n/a | if (cif->rtype->type == FFI_TYPE_STRUCT) |
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431 | n/a | { |
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432 | n/a | struct_flags = calc_n32_return_struct_flags(soft_float, cif->rtype); |
---|
433 | n/a | |
---|
434 | n/a | if (struct_flags == 0) |
---|
435 | n/a | { |
---|
436 | n/a | /* This means that the structure is being passed as |
---|
437 | n/a | a hidden argument */ |
---|
438 | n/a | |
---|
439 | n/a | arg_reg = 1; |
---|
440 | n/a | count = (cif->nargs < 7) ? cif->nargs : 7; |
---|
441 | n/a | |
---|
442 | n/a | cif->rstruct_flag = !0; |
---|
443 | n/a | } |
---|
444 | n/a | else |
---|
445 | n/a | cif->rstruct_flag = 0; |
---|
446 | n/a | } |
---|
447 | n/a | else |
---|
448 | n/a | cif->rstruct_flag = 0; |
---|
449 | n/a | |
---|
450 | n/a | while (count-- > 0 && arg_reg < 8) |
---|
451 | n/a | { |
---|
452 | n/a | type = (cif->arg_types)[index]->type; |
---|
453 | n/a | if (soft_float) |
---|
454 | n/a | { |
---|
455 | n/a | switch (type) |
---|
456 | n/a | { |
---|
457 | n/a | case FFI_TYPE_FLOAT: |
---|
458 | n/a | type = FFI_TYPE_UINT32; |
---|
459 | n/a | break; |
---|
460 | n/a | case FFI_TYPE_DOUBLE: |
---|
461 | n/a | type = FFI_TYPE_UINT64; |
---|
462 | n/a | break; |
---|
463 | n/a | default: |
---|
464 | n/a | break; |
---|
465 | n/a | } |
---|
466 | n/a | } |
---|
467 | n/a | switch (type) |
---|
468 | n/a | { |
---|
469 | n/a | case FFI_TYPE_FLOAT: |
---|
470 | n/a | case FFI_TYPE_DOUBLE: |
---|
471 | n/a | cif->flags += |
---|
472 | n/a | ((cif->arg_types)[index]->type << (arg_reg * FFI_FLAG_BITS)); |
---|
473 | n/a | arg_reg++; |
---|
474 | n/a | break; |
---|
475 | n/a | case FFI_TYPE_LONGDOUBLE: |
---|
476 | n/a | /* Align it. */ |
---|
477 | n/a | arg_reg = ALIGN(arg_reg, 2); |
---|
478 | n/a | /* Treat it as two adjacent doubles. */ |
---|
479 | n/a | if (soft_float) |
---|
480 | n/a | { |
---|
481 | n/a | arg_reg += 2; |
---|
482 | n/a | } |
---|
483 | n/a | else |
---|
484 | n/a | { |
---|
485 | n/a | cif->flags += |
---|
486 | n/a | (FFI_TYPE_DOUBLE << (arg_reg * FFI_FLAG_BITS)); |
---|
487 | n/a | arg_reg++; |
---|
488 | n/a | cif->flags += |
---|
489 | n/a | (FFI_TYPE_DOUBLE << (arg_reg * FFI_FLAG_BITS)); |
---|
490 | n/a | arg_reg++; |
---|
491 | n/a | } |
---|
492 | n/a | break; |
---|
493 | n/a | |
---|
494 | n/a | case FFI_TYPE_STRUCT: |
---|
495 | n/a | loc = arg_reg * FFI_SIZEOF_ARG; |
---|
496 | n/a | cif->flags += calc_n32_struct_flags(soft_float, |
---|
497 | n/a | (cif->arg_types)[index], |
---|
498 | n/a | &loc, &arg_reg); |
---|
499 | n/a | break; |
---|
500 | n/a | |
---|
501 | n/a | default: |
---|
502 | n/a | arg_reg++; |
---|
503 | n/a | break; |
---|
504 | n/a | } |
---|
505 | n/a | |
---|
506 | n/a | index++; |
---|
507 | n/a | } |
---|
508 | n/a | |
---|
509 | n/a | /* Set the return type flag */ |
---|
510 | n/a | switch (cif->rtype->type) |
---|
511 | n/a | { |
---|
512 | n/a | case FFI_TYPE_STRUCT: |
---|
513 | n/a | { |
---|
514 | n/a | if (struct_flags == 0) |
---|
515 | n/a | { |
---|
516 | n/a | /* The structure is returned through a hidden |
---|
517 | n/a | first argument. Do nothing, 'cause FFI_TYPE_VOID |
---|
518 | n/a | is 0 */ |
---|
519 | n/a | } |
---|
520 | n/a | else |
---|
521 | n/a | { |
---|
522 | n/a | /* The structure is returned via some tricky |
---|
523 | n/a | mechanism */ |
---|
524 | n/a | cif->flags += FFI_TYPE_STRUCT << (FFI_FLAG_BITS * 8); |
---|
525 | n/a | cif->flags += struct_flags << (4 + (FFI_FLAG_BITS * 8)); |
---|
526 | n/a | } |
---|
527 | n/a | break; |
---|
528 | n/a | } |
---|
529 | n/a | |
---|
530 | n/a | case FFI_TYPE_VOID: |
---|
531 | n/a | /* Do nothing, 'cause FFI_TYPE_VOID is 0 */ |
---|
532 | n/a | break; |
---|
533 | n/a | |
---|
534 | n/a | case FFI_TYPE_POINTER: |
---|
535 | n/a | if (cif->abi == FFI_N32_SOFT_FLOAT || cif->abi == FFI_N32) |
---|
536 | n/a | cif->flags += FFI_TYPE_SINT32 << (FFI_FLAG_BITS * 8); |
---|
537 | n/a | else |
---|
538 | n/a | cif->flags += FFI_TYPE_INT << (FFI_FLAG_BITS * 8); |
---|
539 | n/a | break; |
---|
540 | n/a | |
---|
541 | n/a | case FFI_TYPE_FLOAT: |
---|
542 | n/a | if (soft_float) |
---|
543 | n/a | { |
---|
544 | n/a | cif->flags += FFI_TYPE_SINT32 << (FFI_FLAG_BITS * 8); |
---|
545 | n/a | break; |
---|
546 | n/a | } |
---|
547 | n/a | /* else fall through */ |
---|
548 | n/a | case FFI_TYPE_DOUBLE: |
---|
549 | n/a | if (soft_float) |
---|
550 | n/a | cif->flags += FFI_TYPE_INT << (FFI_FLAG_BITS * 8); |
---|
551 | n/a | else |
---|
552 | n/a | cif->flags += cif->rtype->type << (FFI_FLAG_BITS * 8); |
---|
553 | n/a | break; |
---|
554 | n/a | |
---|
555 | n/a | case FFI_TYPE_LONGDOUBLE: |
---|
556 | n/a | /* Long double is returned as if it were a struct containing |
---|
557 | n/a | two doubles. */ |
---|
558 | n/a | if (soft_float) |
---|
559 | n/a | { |
---|
560 | n/a | cif->flags += FFI_TYPE_STRUCT << (FFI_FLAG_BITS * 8); |
---|
561 | n/a | cif->flags += FFI_TYPE_SMALLSTRUCT2 << (4 + (FFI_FLAG_BITS * 8)); |
---|
562 | n/a | } |
---|
563 | n/a | else |
---|
564 | n/a | { |
---|
565 | n/a | cif->flags += FFI_TYPE_STRUCT << (FFI_FLAG_BITS * 8); |
---|
566 | n/a | cif->flags += (FFI_TYPE_DOUBLE |
---|
567 | n/a | + (FFI_TYPE_DOUBLE << FFI_FLAG_BITS)) |
---|
568 | n/a | << (4 + (FFI_FLAG_BITS * 8)); |
---|
569 | n/a | } |
---|
570 | n/a | break; |
---|
571 | n/a | default: |
---|
572 | n/a | cif->flags += FFI_TYPE_INT << (FFI_FLAG_BITS * 8); |
---|
573 | n/a | break; |
---|
574 | n/a | } |
---|
575 | n/a | } |
---|
576 | n/a | #endif |
---|
577 | n/a | |
---|
578 | n/a | return FFI_OK; |
---|
579 | n/a | } |
---|
580 | n/a | |
---|
581 | n/a | /* Low level routine for calling O32 functions */ |
---|
582 | n/a | extern int ffi_call_O32(void (*)(char *, extended_cif *, int, int), |
---|
583 | n/a | extended_cif *, unsigned, |
---|
584 | n/a | unsigned, unsigned *, void (*)(void)); |
---|
585 | n/a | |
---|
586 | n/a | /* Low level routine for calling N32 functions */ |
---|
587 | n/a | extern int ffi_call_N32(void (*)(char *, extended_cif *, int, int), |
---|
588 | n/a | extended_cif *, unsigned, |
---|
589 | n/a | unsigned, void *, void (*)(void)); |
---|
590 | n/a | |
---|
591 | n/a | void ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) |
---|
592 | n/a | { |
---|
593 | n/a | extended_cif ecif; |
---|
594 | n/a | |
---|
595 | n/a | ecif.cif = cif; |
---|
596 | n/a | ecif.avalue = avalue; |
---|
597 | n/a | |
---|
598 | n/a | /* If the return value is a struct and we don't have a return */ |
---|
599 | n/a | /* value address then we need to make one */ |
---|
600 | n/a | |
---|
601 | n/a | if ((rvalue == NULL) && |
---|
602 | n/a | (cif->rtype->type == FFI_TYPE_STRUCT)) |
---|
603 | n/a | ecif.rvalue = alloca(cif->rtype->size); |
---|
604 | n/a | else |
---|
605 | n/a | ecif.rvalue = rvalue; |
---|
606 | n/a | |
---|
607 | n/a | switch (cif->abi) |
---|
608 | n/a | { |
---|
609 | n/a | #ifdef FFI_MIPS_O32 |
---|
610 | n/a | case FFI_O32: |
---|
611 | n/a | case FFI_O32_SOFT_FLOAT: |
---|
612 | n/a | ffi_call_O32(ffi_prep_args, &ecif, cif->bytes, |
---|
613 | n/a | cif->flags, ecif.rvalue, fn); |
---|
614 | n/a | break; |
---|
615 | n/a | #endif |
---|
616 | n/a | |
---|
617 | n/a | #ifdef FFI_MIPS_N32 |
---|
618 | n/a | case FFI_N32: |
---|
619 | n/a | case FFI_N32_SOFT_FLOAT: |
---|
620 | n/a | case FFI_N64: |
---|
621 | n/a | case FFI_N64_SOFT_FLOAT: |
---|
622 | n/a | { |
---|
623 | n/a | int copy_rvalue = 0; |
---|
624 | n/a | int copy_offset = 0; |
---|
625 | n/a | char *rvalue_copy = ecif.rvalue; |
---|
626 | n/a | if (cif->rtype->type == FFI_TYPE_STRUCT && cif->rtype->size < 16) |
---|
627 | n/a | { |
---|
628 | n/a | /* For structures smaller than 16 bytes we clobber memory |
---|
629 | n/a | in 8 byte increments. Make a copy so we don't clobber |
---|
630 | n/a | the callers memory outside of the struct bounds. */ |
---|
631 | n/a | rvalue_copy = alloca(16); |
---|
632 | n/a | copy_rvalue = 1; |
---|
633 | n/a | } |
---|
634 | n/a | else if (cif->rtype->type == FFI_TYPE_FLOAT |
---|
635 | n/a | && (cif->abi == FFI_N64_SOFT_FLOAT |
---|
636 | n/a | || cif->abi == FFI_N32_SOFT_FLOAT)) |
---|
637 | n/a | { |
---|
638 | n/a | rvalue_copy = alloca (8); |
---|
639 | n/a | copy_rvalue = 1; |
---|
640 | n/a | #if defined(__MIPSEB__) || defined(_MIPSEB) |
---|
641 | n/a | copy_offset = 4; |
---|
642 | n/a | #endif |
---|
643 | n/a | } |
---|
644 | n/a | ffi_call_N32(ffi_prep_args, &ecif, cif->bytes, |
---|
645 | n/a | cif->flags, rvalue_copy, fn); |
---|
646 | n/a | if (copy_rvalue) |
---|
647 | n/a | memcpy(ecif.rvalue, rvalue_copy + copy_offset, cif->rtype->size); |
---|
648 | n/a | } |
---|
649 | n/a | break; |
---|
650 | n/a | #endif |
---|
651 | n/a | |
---|
652 | n/a | default: |
---|
653 | n/a | FFI_ASSERT(0); |
---|
654 | n/a | break; |
---|
655 | n/a | } |
---|
656 | n/a | } |
---|
657 | n/a | |
---|
658 | n/a | #if FFI_CLOSURES |
---|
659 | n/a | #if defined(FFI_MIPS_O32) |
---|
660 | n/a | extern void ffi_closure_O32(void); |
---|
661 | n/a | #else |
---|
662 | n/a | extern void ffi_closure_N32(void); |
---|
663 | n/a | #endif /* FFI_MIPS_O32 */ |
---|
664 | n/a | |
---|
665 | n/a | ffi_status |
---|
666 | n/a | ffi_prep_closure_loc (ffi_closure *closure, |
---|
667 | n/a | ffi_cif *cif, |
---|
668 | n/a | void (*fun)(ffi_cif*,void*,void**,void*), |
---|
669 | n/a | void *user_data, |
---|
670 | n/a | void *codeloc) |
---|
671 | n/a | { |
---|
672 | n/a | unsigned int *tramp = (unsigned int *) &closure->tramp[0]; |
---|
673 | n/a | void * fn; |
---|
674 | n/a | char *clear_location = (char *) codeloc; |
---|
675 | n/a | |
---|
676 | n/a | #if defined(FFI_MIPS_O32) |
---|
677 | n/a | if (cif->abi != FFI_O32 && cif->abi != FFI_O32_SOFT_FLOAT) |
---|
678 | n/a | return FFI_BAD_ABI; |
---|
679 | n/a | fn = ffi_closure_O32; |
---|
680 | n/a | #else |
---|
681 | n/a | #if _MIPS_SIM ==_ABIN32 |
---|
682 | n/a | if (cif->abi != FFI_N32 |
---|
683 | n/a | && cif->abi != FFI_N32_SOFT_FLOAT) |
---|
684 | n/a | return FFI_BAD_ABI; |
---|
685 | n/a | #else |
---|
686 | n/a | if (cif->abi != FFI_N64 |
---|
687 | n/a | && cif->abi != FFI_N64_SOFT_FLOAT) |
---|
688 | n/a | return FFI_BAD_ABI; |
---|
689 | n/a | #endif |
---|
690 | n/a | fn = ffi_closure_N32; |
---|
691 | n/a | #endif /* FFI_MIPS_O32 */ |
---|
692 | n/a | |
---|
693 | n/a | #if defined(FFI_MIPS_O32) || (_MIPS_SIM ==_ABIN32) |
---|
694 | n/a | /* lui $25,high(fn) */ |
---|
695 | n/a | tramp[0] = 0x3c190000 | ((unsigned)fn >> 16); |
---|
696 | n/a | /* ori $25,low(fn) */ |
---|
697 | n/a | tramp[1] = 0x37390000 | ((unsigned)fn & 0xffff); |
---|
698 | n/a | /* lui $12,high(codeloc) */ |
---|
699 | n/a | tramp[2] = 0x3c0c0000 | ((unsigned)codeloc >> 16); |
---|
700 | n/a | /* jr $25 */ |
---|
701 | n/a | tramp[3] = 0x03200008; |
---|
702 | n/a | /* ori $12,low(codeloc) */ |
---|
703 | n/a | tramp[4] = 0x358c0000 | ((unsigned)codeloc & 0xffff); |
---|
704 | n/a | #else |
---|
705 | n/a | /* N64 has a somewhat larger trampoline. */ |
---|
706 | n/a | /* lui $25,high(fn) */ |
---|
707 | n/a | tramp[0] = 0x3c190000 | ((unsigned long)fn >> 48); |
---|
708 | n/a | /* lui $12,high(codeloc) */ |
---|
709 | n/a | tramp[1] = 0x3c0c0000 | ((unsigned long)codeloc >> 48); |
---|
710 | n/a | /* ori $25,mid-high(fn) */ |
---|
711 | n/a | tramp[2] = 0x37390000 | (((unsigned long)fn >> 32 ) & 0xffff); |
---|
712 | n/a | /* ori $12,mid-high(codeloc) */ |
---|
713 | n/a | tramp[3] = 0x358c0000 | (((unsigned long)codeloc >> 32) & 0xffff); |
---|
714 | n/a | /* dsll $25,$25,16 */ |
---|
715 | n/a | tramp[4] = 0x0019cc38; |
---|
716 | n/a | /* dsll $12,$12,16 */ |
---|
717 | n/a | tramp[5] = 0x000c6438; |
---|
718 | n/a | /* ori $25,mid-low(fn) */ |
---|
719 | n/a | tramp[6] = 0x37390000 | (((unsigned long)fn >> 16 ) & 0xffff); |
---|
720 | n/a | /* ori $12,mid-low(codeloc) */ |
---|
721 | n/a | tramp[7] = 0x358c0000 | (((unsigned long)codeloc >> 16) & 0xffff); |
---|
722 | n/a | /* dsll $25,$25,16 */ |
---|
723 | n/a | tramp[8] = 0x0019cc38; |
---|
724 | n/a | /* dsll $12,$12,16 */ |
---|
725 | n/a | tramp[9] = 0x000c6438; |
---|
726 | n/a | /* ori $25,low(fn) */ |
---|
727 | n/a | tramp[10] = 0x37390000 | ((unsigned long)fn & 0xffff); |
---|
728 | n/a | /* jr $25 */ |
---|
729 | n/a | tramp[11] = 0x03200008; |
---|
730 | n/a | /* ori $12,low(codeloc) */ |
---|
731 | n/a | tramp[12] = 0x358c0000 | ((unsigned long)codeloc & 0xffff); |
---|
732 | n/a | |
---|
733 | n/a | #endif |
---|
734 | n/a | |
---|
735 | n/a | closure->cif = cif; |
---|
736 | n/a | closure->fun = fun; |
---|
737 | n/a | closure->user_data = user_data; |
---|
738 | n/a | |
---|
739 | n/a | #ifdef USE__BUILTIN___CLEAR_CACHE |
---|
740 | n/a | __builtin___clear_cache(clear_location, clear_location + FFI_TRAMPOLINE_SIZE); |
---|
741 | n/a | #else |
---|
742 | n/a | cacheflush (clear_location, FFI_TRAMPOLINE_SIZE, ICACHE); |
---|
743 | n/a | #endif |
---|
744 | n/a | return FFI_OK; |
---|
745 | n/a | } |
---|
746 | n/a | |
---|
747 | n/a | /* |
---|
748 | n/a | * Decodes the arguments to a function, which will be stored on the |
---|
749 | n/a | * stack. AR is the pointer to the beginning of the integer arguments |
---|
750 | n/a | * (and, depending upon the arguments, some floating-point arguments |
---|
751 | n/a | * as well). FPR is a pointer to the area where floating point |
---|
752 | n/a | * registers have been saved, if any. |
---|
753 | n/a | * |
---|
754 | n/a | * RVALUE is the location where the function return value will be |
---|
755 | n/a | * stored. CLOSURE is the prepared closure to invoke. |
---|
756 | n/a | * |
---|
757 | n/a | * This function should only be called from assembly, which is in |
---|
758 | n/a | * turn called from a trampoline. |
---|
759 | n/a | * |
---|
760 | n/a | * Returns the function return type. |
---|
761 | n/a | * |
---|
762 | n/a | * Based on the similar routine for sparc. |
---|
763 | n/a | */ |
---|
764 | n/a | int |
---|
765 | n/a | ffi_closure_mips_inner_O32 (ffi_closure *closure, |
---|
766 | n/a | void *rvalue, ffi_arg *ar, |
---|
767 | n/a | double *fpr) |
---|
768 | n/a | { |
---|
769 | n/a | ffi_cif *cif; |
---|
770 | n/a | void **avaluep; |
---|
771 | n/a | ffi_arg *avalue; |
---|
772 | n/a | ffi_type **arg_types; |
---|
773 | n/a | int i, avn, argn, seen_int; |
---|
774 | n/a | |
---|
775 | n/a | cif = closure->cif; |
---|
776 | n/a | avalue = alloca (cif->nargs * sizeof (ffi_arg)); |
---|
777 | n/a | avaluep = alloca (cif->nargs * sizeof (ffi_arg)); |
---|
778 | n/a | |
---|
779 | n/a | seen_int = (cif->abi == FFI_O32_SOFT_FLOAT); |
---|
780 | n/a | argn = 0; |
---|
781 | n/a | |
---|
782 | n/a | if ((cif->flags >> (FFI_FLAG_BITS * 2)) == FFI_TYPE_STRUCT) |
---|
783 | n/a | { |
---|
784 | n/a | rvalue = (void *)(UINT32)ar[0]; |
---|
785 | n/a | argn = 1; |
---|
786 | n/a | } |
---|
787 | n/a | |
---|
788 | n/a | i = 0; |
---|
789 | n/a | avn = cif->nargs; |
---|
790 | n/a | arg_types = cif->arg_types; |
---|
791 | n/a | |
---|
792 | n/a | while (i < avn) |
---|
793 | n/a | { |
---|
794 | n/a | if (i < 2 && !seen_int && |
---|
795 | n/a | (arg_types[i]->type == FFI_TYPE_FLOAT || |
---|
796 | n/a | arg_types[i]->type == FFI_TYPE_DOUBLE || |
---|
797 | n/a | arg_types[i]->type == FFI_TYPE_LONGDOUBLE)) |
---|
798 | n/a | { |
---|
799 | n/a | #if defined(__MIPSEB__) || defined(_MIPSEB) |
---|
800 | n/a | if (arg_types[i]->type == FFI_TYPE_FLOAT) |
---|
801 | n/a | avaluep[i] = ((char *) &fpr[i]) + sizeof (float); |
---|
802 | n/a | else |
---|
803 | n/a | #endif |
---|
804 | n/a | avaluep[i] = (char *) &fpr[i]; |
---|
805 | n/a | } |
---|
806 | n/a | else |
---|
807 | n/a | { |
---|
808 | n/a | if (arg_types[i]->alignment == 8 && (argn & 0x1)) |
---|
809 | n/a | argn++; |
---|
810 | n/a | switch (arg_types[i]->type) |
---|
811 | n/a | { |
---|
812 | n/a | case FFI_TYPE_SINT8: |
---|
813 | n/a | avaluep[i] = &avalue[i]; |
---|
814 | n/a | *(SINT8 *) &avalue[i] = (SINT8) ar[argn]; |
---|
815 | n/a | break; |
---|
816 | n/a | |
---|
817 | n/a | case FFI_TYPE_UINT8: |
---|
818 | n/a | avaluep[i] = &avalue[i]; |
---|
819 | n/a | *(UINT8 *) &avalue[i] = (UINT8) ar[argn]; |
---|
820 | n/a | break; |
---|
821 | n/a | |
---|
822 | n/a | case FFI_TYPE_SINT16: |
---|
823 | n/a | avaluep[i] = &avalue[i]; |
---|
824 | n/a | *(SINT16 *) &avalue[i] = (SINT16) ar[argn]; |
---|
825 | n/a | break; |
---|
826 | n/a | |
---|
827 | n/a | case FFI_TYPE_UINT16: |
---|
828 | n/a | avaluep[i] = &avalue[i]; |
---|
829 | n/a | *(UINT16 *) &avalue[i] = (UINT16) ar[argn]; |
---|
830 | n/a | break; |
---|
831 | n/a | |
---|
832 | n/a | default: |
---|
833 | n/a | avaluep[i] = (char *) &ar[argn]; |
---|
834 | n/a | break; |
---|
835 | n/a | } |
---|
836 | n/a | seen_int = 1; |
---|
837 | n/a | } |
---|
838 | n/a | argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG; |
---|
839 | n/a | i++; |
---|
840 | n/a | } |
---|
841 | n/a | |
---|
842 | n/a | /* Invoke the closure. */ |
---|
843 | n/a | (closure->fun) (cif, rvalue, avaluep, closure->user_data); |
---|
844 | n/a | |
---|
845 | n/a | if (cif->abi == FFI_O32_SOFT_FLOAT) |
---|
846 | n/a | { |
---|
847 | n/a | switch (cif->rtype->type) |
---|
848 | n/a | { |
---|
849 | n/a | case FFI_TYPE_FLOAT: |
---|
850 | n/a | return FFI_TYPE_INT; |
---|
851 | n/a | case FFI_TYPE_DOUBLE: |
---|
852 | n/a | return FFI_TYPE_UINT64; |
---|
853 | n/a | default: |
---|
854 | n/a | return cif->rtype->type; |
---|
855 | n/a | } |
---|
856 | n/a | } |
---|
857 | n/a | else |
---|
858 | n/a | { |
---|
859 | n/a | return cif->rtype->type; |
---|
860 | n/a | } |
---|
861 | n/a | } |
---|
862 | n/a | |
---|
863 | n/a | #if defined(FFI_MIPS_N32) |
---|
864 | n/a | |
---|
865 | n/a | static void |
---|
866 | n/a | copy_struct_N32(char *target, unsigned offset, ffi_abi abi, ffi_type *type, |
---|
867 | n/a | int argn, unsigned arg_offset, ffi_arg *ar, |
---|
868 | n/a | ffi_arg *fpr, int soft_float) |
---|
869 | n/a | { |
---|
870 | n/a | ffi_type **elt_typep = type->elements; |
---|
871 | n/a | while(*elt_typep) |
---|
872 | n/a | { |
---|
873 | n/a | ffi_type *elt_type = *elt_typep; |
---|
874 | n/a | unsigned o; |
---|
875 | n/a | char *tp; |
---|
876 | n/a | char *argp; |
---|
877 | n/a | char *fpp; |
---|
878 | n/a | |
---|
879 | n/a | o = ALIGN(offset, elt_type->alignment); |
---|
880 | n/a | arg_offset += o - offset; |
---|
881 | n/a | offset = o; |
---|
882 | n/a | argn += arg_offset / sizeof(ffi_arg); |
---|
883 | n/a | arg_offset = arg_offset % sizeof(ffi_arg); |
---|
884 | n/a | |
---|
885 | n/a | argp = (char *)(ar + argn); |
---|
886 | n/a | fpp = (char *)(argn >= 8 ? ar + argn : fpr + argn); |
---|
887 | n/a | |
---|
888 | n/a | tp = target + offset; |
---|
889 | n/a | |
---|
890 | n/a | if (elt_type->type == FFI_TYPE_DOUBLE && !soft_float) |
---|
891 | n/a | *(double *)tp = *(double *)fpp; |
---|
892 | n/a | else |
---|
893 | n/a | memcpy(tp, argp + arg_offset, elt_type->size); |
---|
894 | n/a | |
---|
895 | n/a | offset += elt_type->size; |
---|
896 | n/a | arg_offset += elt_type->size; |
---|
897 | n/a | elt_typep++; |
---|
898 | n/a | argn += arg_offset / sizeof(ffi_arg); |
---|
899 | n/a | arg_offset = arg_offset % sizeof(ffi_arg); |
---|
900 | n/a | } |
---|
901 | n/a | } |
---|
902 | n/a | |
---|
903 | n/a | /* |
---|
904 | n/a | * Decodes the arguments to a function, which will be stored on the |
---|
905 | n/a | * stack. AR is the pointer to the beginning of the integer |
---|
906 | n/a | * arguments. FPR is a pointer to the area where floating point |
---|
907 | n/a | * registers have been saved. |
---|
908 | n/a | * |
---|
909 | n/a | * RVALUE is the location where the function return value will be |
---|
910 | n/a | * stored. CLOSURE is the prepared closure to invoke. |
---|
911 | n/a | * |
---|
912 | n/a | * This function should only be called from assembly, which is in |
---|
913 | n/a | * turn called from a trampoline. |
---|
914 | n/a | * |
---|
915 | n/a | * Returns the function return flags. |
---|
916 | n/a | * |
---|
917 | n/a | */ |
---|
918 | n/a | int |
---|
919 | n/a | ffi_closure_mips_inner_N32 (ffi_closure *closure, |
---|
920 | n/a | void *rvalue, ffi_arg *ar, |
---|
921 | n/a | ffi_arg *fpr) |
---|
922 | n/a | { |
---|
923 | n/a | ffi_cif *cif; |
---|
924 | n/a | void **avaluep; |
---|
925 | n/a | ffi_arg *avalue; |
---|
926 | n/a | ffi_type **arg_types; |
---|
927 | n/a | int i, avn, argn; |
---|
928 | n/a | int soft_float; |
---|
929 | n/a | ffi_arg *argp; |
---|
930 | n/a | |
---|
931 | n/a | cif = closure->cif; |
---|
932 | n/a | soft_float = cif->abi == FFI_N64_SOFT_FLOAT |
---|
933 | n/a | || cif->abi == FFI_N32_SOFT_FLOAT; |
---|
934 | n/a | avalue = alloca (cif->nargs * sizeof (ffi_arg)); |
---|
935 | n/a | avaluep = alloca (cif->nargs * sizeof (ffi_arg)); |
---|
936 | n/a | |
---|
937 | n/a | argn = 0; |
---|
938 | n/a | |
---|
939 | n/a | if (cif->rstruct_flag) |
---|
940 | n/a | { |
---|
941 | n/a | #if _MIPS_SIM==_ABIN32 |
---|
942 | n/a | rvalue = (void *)(UINT32)ar[0]; |
---|
943 | n/a | #else /* N64 */ |
---|
944 | n/a | rvalue = (void *)ar[0]; |
---|
945 | n/a | #endif |
---|
946 | n/a | argn = 1; |
---|
947 | n/a | } |
---|
948 | n/a | |
---|
949 | n/a | i = 0; |
---|
950 | n/a | avn = cif->nargs; |
---|
951 | n/a | arg_types = cif->arg_types; |
---|
952 | n/a | |
---|
953 | n/a | while (i < avn) |
---|
954 | n/a | { |
---|
955 | n/a | if (arg_types[i]->type == FFI_TYPE_FLOAT |
---|
956 | n/a | || arg_types[i]->type == FFI_TYPE_DOUBLE |
---|
957 | n/a | || arg_types[i]->type == FFI_TYPE_LONGDOUBLE) |
---|
958 | n/a | { |
---|
959 | n/a | argp = (argn >= 8 || soft_float) ? ar + argn : fpr + argn; |
---|
960 | n/a | if ((arg_types[i]->type == FFI_TYPE_LONGDOUBLE) && ((unsigned)argp & (arg_types[i]->alignment-1))) |
---|
961 | n/a | { |
---|
962 | n/a | argp=(ffi_arg*)ALIGN(argp,arg_types[i]->alignment); |
---|
963 | n/a | argn++; |
---|
964 | n/a | } |
---|
965 | n/a | #if defined(__MIPSEB__) || defined(_MIPSEB) |
---|
966 | n/a | if (arg_types[i]->type == FFI_TYPE_FLOAT && argn < 8) |
---|
967 | n/a | avaluep[i] = ((char *) argp) + sizeof (float); |
---|
968 | n/a | else |
---|
969 | n/a | #endif |
---|
970 | n/a | avaluep[i] = (char *) argp; |
---|
971 | n/a | } |
---|
972 | n/a | else |
---|
973 | n/a | { |
---|
974 | n/a | unsigned type = arg_types[i]->type; |
---|
975 | n/a | |
---|
976 | n/a | if (arg_types[i]->alignment > sizeof(ffi_arg)) |
---|
977 | n/a | argn = ALIGN(argn, arg_types[i]->alignment / sizeof(ffi_arg)); |
---|
978 | n/a | |
---|
979 | n/a | argp = ar + argn; |
---|
980 | n/a | |
---|
981 | n/a | /* The size of a pointer depends on the ABI */ |
---|
982 | n/a | if (type == FFI_TYPE_POINTER) |
---|
983 | n/a | type = (cif->abi == FFI_N64 || cif->abi == FFI_N64_SOFT_FLOAT) |
---|
984 | n/a | ? FFI_TYPE_SINT64 : FFI_TYPE_SINT32; |
---|
985 | n/a | |
---|
986 | n/a | if (soft_float && type == FFI_TYPE_FLOAT) |
---|
987 | n/a | type = FFI_TYPE_UINT32; |
---|
988 | n/a | |
---|
989 | n/a | switch (type) |
---|
990 | n/a | { |
---|
991 | n/a | case FFI_TYPE_SINT8: |
---|
992 | n/a | avaluep[i] = &avalue[i]; |
---|
993 | n/a | *(SINT8 *) &avalue[i] = (SINT8) *argp; |
---|
994 | n/a | break; |
---|
995 | n/a | |
---|
996 | n/a | case FFI_TYPE_UINT8: |
---|
997 | n/a | avaluep[i] = &avalue[i]; |
---|
998 | n/a | *(UINT8 *) &avalue[i] = (UINT8) *argp; |
---|
999 | n/a | break; |
---|
1000 | n/a | |
---|
1001 | n/a | case FFI_TYPE_SINT16: |
---|
1002 | n/a | avaluep[i] = &avalue[i]; |
---|
1003 | n/a | *(SINT16 *) &avalue[i] = (SINT16) *argp; |
---|
1004 | n/a | break; |
---|
1005 | n/a | |
---|
1006 | n/a | case FFI_TYPE_UINT16: |
---|
1007 | n/a | avaluep[i] = &avalue[i]; |
---|
1008 | n/a | *(UINT16 *) &avalue[i] = (UINT16) *argp; |
---|
1009 | n/a | break; |
---|
1010 | n/a | |
---|
1011 | n/a | case FFI_TYPE_SINT32: |
---|
1012 | n/a | avaluep[i] = &avalue[i]; |
---|
1013 | n/a | *(SINT32 *) &avalue[i] = (SINT32) *argp; |
---|
1014 | n/a | break; |
---|
1015 | n/a | |
---|
1016 | n/a | case FFI_TYPE_UINT32: |
---|
1017 | n/a | avaluep[i] = &avalue[i]; |
---|
1018 | n/a | *(UINT32 *) &avalue[i] = (UINT32) *argp; |
---|
1019 | n/a | break; |
---|
1020 | n/a | |
---|
1021 | n/a | case FFI_TYPE_STRUCT: |
---|
1022 | n/a | if (argn < 8) |
---|
1023 | n/a | { |
---|
1024 | n/a | /* Allocate space for the struct as at least part of |
---|
1025 | n/a | it was passed in registers. */ |
---|
1026 | n/a | avaluep[i] = alloca(arg_types[i]->size); |
---|
1027 | n/a | copy_struct_N32(avaluep[i], 0, cif->abi, arg_types[i], |
---|
1028 | n/a | argn, 0, ar, fpr, soft_float); |
---|
1029 | n/a | |
---|
1030 | n/a | break; |
---|
1031 | n/a | } |
---|
1032 | n/a | /* Else fall through. */ |
---|
1033 | n/a | default: |
---|
1034 | n/a | avaluep[i] = (char *) argp; |
---|
1035 | n/a | break; |
---|
1036 | n/a | } |
---|
1037 | n/a | } |
---|
1038 | n/a | argn += ALIGN(arg_types[i]->size, sizeof(ffi_arg)) / sizeof(ffi_arg); |
---|
1039 | n/a | i++; |
---|
1040 | n/a | } |
---|
1041 | n/a | |
---|
1042 | n/a | /* Invoke the closure. */ |
---|
1043 | n/a | (closure->fun) (cif, rvalue, avaluep, closure->user_data); |
---|
1044 | n/a | |
---|
1045 | n/a | return cif->flags >> (FFI_FLAG_BITS * 8); |
---|
1046 | n/a | } |
---|
1047 | n/a | |
---|
1048 | n/a | #endif /* FFI_MIPS_N32 */ |
---|
1049 | n/a | |
---|
1050 | n/a | #endif /* FFI_CLOSURES */ |
---|