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111
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1 /* -----------------------------------------------------------------------
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2 sysv.S - Copyright (c) 2003, 2004, 2006, 2008 Kaz Kojima
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3
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4 SuperH SHmedia Foreign Function Interface
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5
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6 Permission is hereby granted, free of charge, to any person obtaining
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7 a copy of this software and associated documentation files (the
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8 ``Software''), to deal in the Software without restriction, including
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9 without limitation the rights to use, copy, modify, merge, publish,
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10 distribute, sublicense, and/or sell copies of the Software, and to
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11 permit persons to whom the Software is furnished to do so, subject to
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12 the following conditions:
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13
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14 The above copyright notice and this permission notice shall be included
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15 in all copies or substantial portions of the Software.
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16
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17
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18 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
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19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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22 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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23 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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25 DEALINGS IN THE SOFTWARE.
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26 ----------------------------------------------------------------------- */
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27
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28 #define LIBFFI_ASM
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29 #include <fficonfig.h>
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30 #include <ffi.h>
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31 #ifdef HAVE_MACHINE_ASM_H
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32 #include <machine/asm.h>
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33 #else
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34 /* XXX these lose for some platforms, I'm sure. */
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35 #define CNAME(x) x
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36 #define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
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37 #endif
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38
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39 #ifdef __LITTLE_ENDIAN__
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40 #define OFS_FLT 0
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41 #else
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42 #define OFS_FLT 4
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43 #endif
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44
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45 .section .text..SHmedia32,"ax"
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46
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47 # r2: ffi_prep_args
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48 # r3: &ecif
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49 # r4: bytes
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50 # r5: flags
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51 # r6: flags2
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52 # r7: rvalue
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53 # r8: fn
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54
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55 # This assumes we are using gas.
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56 .align 5
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57 ENTRY(ffi_call_SYSV)
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58 # Save registers
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59 .LFB1:
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60 addi.l r15, -48, r15
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61 .LCFI0:
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62 st.q r15, 40, r32
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63 st.q r15, 32, r31
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64 st.q r15, 24, r30
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65 st.q r15, 16, r29
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66 st.q r15, 8, r28
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67 st.l r15, 4, r18
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68 st.l r15, 0, r14
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69 .LCFI1:
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70 add.l r15, r63, r14
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71 .LCFI2:
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72 # add r4, r63, r28
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73 add r5, r63, r29
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74 add r6, r63, r30
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75 add r7, r63, r31
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76 add r8, r63, r32
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77
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78 addi r4, (64 + 7), r4
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79 andi r4, ~7, r4
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80 sub.l r15, r4, r15
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81
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82 ptabs/l r2, tr0
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83 add r15, r63, r2
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84 blink tr0, r18
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85
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86 addi r15, 64, r22
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87 movi 0, r0
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88 movi 0, r1
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89 movi -1, r23
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90
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91 pt/l 1f, tr1
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92 bnei/l r29, FFI_TYPE_STRUCT, tr1
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93 ld.l r15, 0, r19
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94 addi r15, 8, r15
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95 addi r0, 1, r0
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96 1:
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97
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98 .L_pass:
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99 andi r30, 3, r20
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100 shlri r30, 2, r30
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101
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102 pt/l .L_call_it, tr0
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103 pt/l .L_pass_i, tr1
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104 pt/l .L_pass_f, tr2
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105
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106 beqi/l r20, FFI_TYPE_VOID, tr0
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107 beqi/l r20, FFI_TYPE_INT, tr1
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108 beqi/l r20, FFI_TYPE_FLOAT, tr2
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109
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110 .L_pass_d:
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111 addi r0, 1, r0
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112 pt/l 3f, tr0
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113 movi 12, r20
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114 bge/l r1, r20, tr0
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115
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116 pt/l .L_pop_d, tr1
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117 pt/l 2f, tr0
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118 blink tr1, r63
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119 2:
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120 addi.l r15, 8, r15
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121 3:
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122 pt/l .L_pass, tr0
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123 addi r1, 2, r1
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124 blink tr0, r63
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125
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126 .L_pop_d:
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127 pt/l .L_pop_d_tbl, tr1
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128 gettr tr1, r20
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129 shlli r1, 2, r21
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130 add r20, r21, r20
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131 ptabs/l r20, tr1
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132 blink tr1, r63
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133
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134 .L_pop_d_tbl:
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135 fld.d r15, 0, dr0
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136 blink tr0, r63
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137 fld.d r15, 0, dr2
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138 blink tr0, r63
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139 fld.d r15, 0, dr4
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140 blink tr0, r63
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141 fld.d r15, 0, dr6
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142 blink tr0, r63
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143 fld.d r15, 0, dr8
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144 blink tr0, r63
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145 fld.d r15, 0, dr10
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146 blink tr0, r63
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147
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148 .L_pass_f:
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149 addi r0, 1, r0
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150 pt/l 3f, tr0
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151 movi 12, r20
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152 bge/l r1, r20, tr0
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153
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154 pt/l .L_pop_f, tr1
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155 pt/l 2f, tr0
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156 blink tr1, r63
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157 2:
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158 addi.l r15, 8, r15
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159 3:
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160 pt/l .L_pass, tr0
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161 blink tr0, r63
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162
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163 .L_pop_f:
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164 pt/l .L_pop_f_tbl, tr1
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165 pt/l 5f, tr2
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166 gettr tr1, r20
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167 bge/l r23, r63, tr2
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168 add r1, r63, r23
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169 shlli r1, 3, r21
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170 addi r1, 2, r1
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171 add r20, r21, r20
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172 ptabs/l r20, tr1
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173 blink tr1, r63
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174 5:
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175 addi r23, 1, r21
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176 movi -1, r23
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177 shlli r21, 3, r21
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178 add r20, r21, r20
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179 ptabs/l r20, tr1
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180 blink tr1, r63
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181
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182 .L_pop_f_tbl:
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183 fld.s r15, OFS_FLT, fr0
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184 blink tr0, r63
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185 fld.s r15, OFS_FLT, fr1
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186 blink tr0, r63
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187 fld.s r15, OFS_FLT, fr2
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188 blink tr0, r63
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189 fld.s r15, OFS_FLT, fr3
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190 blink tr0, r63
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191 fld.s r15, OFS_FLT, fr4
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192 blink tr0, r63
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193 fld.s r15, OFS_FLT, fr5
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194 blink tr0, r63
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195 fld.s r15, OFS_FLT, fr6
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196 blink tr0, r63
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197 fld.s r15, OFS_FLT, fr7
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198 blink tr0, r63
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199 fld.s r15, OFS_FLT, fr8
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200 blink tr0, r63
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201 fld.s r15, OFS_FLT, fr9
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202 blink tr0, r63
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203 fld.s r15, OFS_FLT, fr10
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204 blink tr0, r63
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205 fld.s r15, OFS_FLT, fr11
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206 blink tr0, r63
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207
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208 .L_pass_i:
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209 pt/l 3f, tr0
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210 movi 8, r20
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211 bge/l r0, r20, tr0
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212
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213 pt/l .L_pop_i, tr1
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214 pt/l 2f, tr0
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215 blink tr1, r63
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216 2:
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217 addi.l r15, 8, r15
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218 3:
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219 pt/l .L_pass, tr0
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220 addi r0, 1, r0
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221 blink tr0, r63
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222
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223 .L_pop_i:
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224 pt/l .L_pop_i_tbl, tr1
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225 gettr tr1, r20
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226 shlli r0, 3, r21
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227 add r20, r21, r20
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228 ptabs/l r20, tr1
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229 blink tr1, r63
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230
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231 .L_pop_i_tbl:
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232 ld.q r15, 0, r2
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233 blink tr0, r63
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234 ld.q r15, 0, r3
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235 blink tr0, r63
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236 ld.q r15, 0, r4
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237 blink tr0, r63
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238 ld.q r15, 0, r5
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239 blink tr0, r63
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240 ld.q r15, 0, r6
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241 blink tr0, r63
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242 ld.q r15, 0, r7
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243 blink tr0, r63
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244 ld.q r15, 0, r8
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245 blink tr0, r63
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246 ld.q r15, 0, r9
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247 blink tr0, r63
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248
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249 .L_call_it:
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250 # call function
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251 pt/l 1f, tr1
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252 bnei/l r29, FFI_TYPE_STRUCT, tr1
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253 add r19, r63, r2
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254 1:
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255 add r22, r63, r15
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256 ptabs/l r32, tr0
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257 blink tr0, r18
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258
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259 pt/l .L_ret_i, tr0
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260 pt/l .L_ret_ll, tr1
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261 pt/l .L_ret_d, tr2
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262 pt/l .L_ret_f, tr3
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263 pt/l .L_epilogue, tr4
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264
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265 beqi/l r29, FFI_TYPE_INT, tr0
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266 beqi/l r29, FFI_TYPE_UINT32, tr0
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267 beqi/l r29, FFI_TYPE_SINT64, tr1
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268 beqi/l r29, FFI_TYPE_UINT64, tr1
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269 beqi/l r29, FFI_TYPE_DOUBLE, tr2
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270 beqi/l r29, FFI_TYPE_FLOAT, tr3
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271
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272 pt/l .L_ret_q, tr0
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273 pt/l .L_ret_h, tr1
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274
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275 beqi/l r29, FFI_TYPE_UINT8, tr0
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276 beqi/l r29, FFI_TYPE_UINT16, tr1
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277 blink tr4, r63
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278
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279 .L_ret_d:
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280 fst.d r31, 0, dr0
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281 blink tr4, r63
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282
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283 .L_ret_ll:
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284 st.q r31, 0, r2
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285 blink tr4, r63
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286
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287 .L_ret_f:
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288 fst.s r31, OFS_FLT, fr0
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289 blink tr4, r63
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290
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291 .L_ret_q:
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292 st.b r31, 0, r2
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293 blink tr4, r63
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294
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295 .L_ret_h:
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296 st.w r31, 0, r2
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297 blink tr4, r63
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298
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299 .L_ret_i:
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300 st.l r31, 0, r2
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301 # Fall
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302
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303 .L_epilogue:
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304 # Remove the space we pushed for the args
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305 add r14, r63, r15
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306
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307 ld.l r15, 0, r14
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308 ld.l r15, 4, r18
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309 ld.q r15, 8, r28
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310 ld.q r15, 16, r29
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311 ld.q r15, 24, r30
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312 ld.q r15, 32, r31
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313 ld.q r15, 40, r32
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314 addi.l r15, 48, r15
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315 ptabs r18, tr0
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316 blink tr0, r63
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317
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318 .LFE1:
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319 .ffi_call_SYSV_end:
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320 .size CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)
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321
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322 .align 5
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323 ENTRY(ffi_closure_SYSV)
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324 .LFB2:
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325 addi.l r15, -136, r15
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326 .LCFI3:
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327 st.l r15, 12, r18
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328 st.l r15, 8, r14
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329 st.l r15, 4, r12
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330 .LCFI4:
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331 add r15, r63, r14
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332 .LCFI5:
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333 /* Stack layout:
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334 ...
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335 64 bytes (register parameters)
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336 48 bytes (floating register parameters)
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337 8 bytes (result)
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338 4 bytes (r18)
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339 4 bytes (r14)
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340 4 bytes (r12)
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341 4 bytes (for align)
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342 <- new stack pointer
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343 */
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344 fst.d r14, 24, dr0
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345 fst.d r14, 32, dr2
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346 fst.d r14, 40, dr4
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347 fst.d r14, 48, dr6
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348 fst.d r14, 56, dr8
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349 fst.d r14, 64, dr10
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350 st.q r14, 72, r2
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351 st.q r14, 80, r3
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352 st.q r14, 88, r4
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353 st.q r14, 96, r5
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354 st.q r14, 104, r6
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355 st.q r14, 112, r7
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356 st.q r14, 120, r8
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357 st.q r14, 128, r9
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358
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359 add r1, r63, r2
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360 addi r14, 16, r3
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361 addi r14, 72, r4
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362 addi r14, 24, r5
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363 addi r14, 136, r6
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364 #ifdef PIC
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365 movi (((datalabel _GLOBAL_OFFSET_TABLE_-(.LPCS0-.)) >> 16) & 65535), r12
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366 shori ((datalabel _GLOBAL_OFFSET_TABLE_-(.LPCS0-.)) & 65535), r12
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367 .LPCS0: ptrel/u r12, tr0
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368 movi ((ffi_closure_helper_SYSV@GOTPLT) & 65535), r1
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369 gettr tr0, r12
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370 ldx.l r1, r12, r1
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371 ptabs r1, tr0
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372 #else
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373 pt/l ffi_closure_helper_SYSV, tr0
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374 #endif
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375 blink tr0, r18
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376
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377 shlli r2, 1, r1
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378 movi (((datalabel .L_table) >> 16) & 65535), r2
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379 shori ((datalabel .L_table) & 65535), r2
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380 ldx.w r2, r1, r1
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381 add r1, r2, r1
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382 pt/l .L_case_v, tr1
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383 ptabs r1, tr0
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384 blink tr0, r63
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385
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386 .align 2
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387 .L_table:
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388 .word .L_case_v - datalabel .L_table /* FFI_TYPE_VOID */
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389 .word .L_case_i - datalabel .L_table /* FFI_TYPE_INT */
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390 .word .L_case_f - datalabel .L_table /* FFI_TYPE_FLOAT */
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391 .word .L_case_d - datalabel .L_table /* FFI_TYPE_DOUBLE */
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392 .word .L_case_d - datalabel .L_table /* FFI_TYPE_LONGDOUBLE */
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393 .word .L_case_uq - datalabel .L_table /* FFI_TYPE_UINT8 */
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394 .word .L_case_q - datalabel .L_table /* FFI_TYPE_SINT8 */
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395 .word .L_case_uh - datalabel .L_table /* FFI_TYPE_UINT16 */
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396 .word .L_case_h - datalabel .L_table /* FFI_TYPE_SINT16 */
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397 .word .L_case_i - datalabel .L_table /* FFI_TYPE_UINT32 */
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398 .word .L_case_i - datalabel .L_table /* FFI_TYPE_SINT32 */
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399 .word .L_case_ll - datalabel .L_table /* FFI_TYPE_UINT64 */
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400 .word .L_case_ll - datalabel .L_table /* FFI_TYPE_SINT64 */
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401 .word .L_case_v - datalabel .L_table /* FFI_TYPE_STRUCT */
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402 .word .L_case_i - datalabel .L_table /* FFI_TYPE_POINTER */
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403
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404 .align 2
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405 .L_case_d:
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406 fld.d r14, 16, dr0
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407 blink tr1, r63
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408 .L_case_f:
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409 fld.s r14, 16, fr0
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410 blink tr1, r63
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411 .L_case_ll:
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412 ld.q r14, 16, r2
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413 blink tr1, r63
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414 .L_case_i:
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415 ld.l r14, 16, r2
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416 blink tr1, r63
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417 .L_case_q:
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418 ld.b r14, 16, r2
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419 blink tr1, r63
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420 .L_case_uq:
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421 ld.ub r14, 16, r2
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422 blink tr1, r63
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423 .L_case_h:
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424 ld.w r14, 16, r2
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425 blink tr1, r63
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426 .L_case_uh:
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427 ld.uw r14, 16, r2
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428 blink tr1, r63
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429 .L_case_v:
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430 add.l r14, r63, r15
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431 ld.l r15, 4, r12
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432 ld.l r15, 8, r14
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433 ld.l r15, 12, r18
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434 addi.l r15, 136, r15
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435 ptabs r18, tr0
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436 blink tr0, r63
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437
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438 .LFE2:
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439 .ffi_closure_SYSV_end:
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440 .size CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)
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441
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442 #if defined __ELF__ && defined __linux__
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443 .section .note.GNU-stack,"",@progbits
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444 #endif
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445
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446 .section ".eh_frame","aw",@progbits
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447 __FRAME_BEGIN__:
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448 .4byte .LECIE1-.LSCIE1 /* Length of Common Information Entry */
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449 .LSCIE1:
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450 .4byte 0x0 /* CIE Identifier Tag */
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451 .byte 0x1 /* CIE Version */
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452 #ifdef PIC
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453 .ascii "zR\0" /* CIE Augmentation */
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454 #else
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455 .byte 0x0 /* CIE Augmentation */
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456 #endif
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457 .uleb128 0x1 /* CIE Code Alignment Factor */
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458 .sleb128 -4 /* CIE Data Alignment Factor */
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459 .byte 0x12 /* CIE RA Column */
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460 #ifdef PIC
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461 .uleb128 0x1 /* Augmentation size */
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462 .byte 0x10 /* FDE Encoding (pcrel) */
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463 #endif
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464 .byte 0xc /* DW_CFA_def_cfa */
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465 .uleb128 0xf
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466 .uleb128 0x0
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467 .align 2
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468 .LECIE1:
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469 .LSFDE1:
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470 .4byte datalabel .LEFDE1-datalabel .LASFDE1 /* FDE Length */
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471 .LASFDE1:
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472 .4byte datalabel .LASFDE1-datalabel __FRAME_BEGIN__
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473 #ifdef PIC
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474 .4byte .LFB1-. /* FDE initial location */
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475 #else
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476 .4byte .LFB1 /* FDE initial location */
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477 #endif
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478 .4byte datalabel .LFE1-datalabel .LFB1 /* FDE address range */
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479 #ifdef PIC
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480 .uleb128 0x0 /* Augmentation size */
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481 #endif
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482 .byte 0x4 /* DW_CFA_advance_loc4 */
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483 .4byte datalabel .LCFI0-datalabel .LFB1
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484 .byte 0xe /* DW_CFA_def_cfa_offset */
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485 .uleb128 0x30
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486 .byte 0x4 /* DW_CFA_advance_loc4 */
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487 .4byte datalabel .LCFI1-datalabel .LCFI0
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488 .byte 0x8e /* DW_CFA_offset, column 0xe */
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489 .uleb128 0xc
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490 .byte 0x92 /* DW_CFA_offset, column 0x12 */
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491 .uleb128 0xb
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492 .byte 0x9c /* DW_CFA_offset, column 0x1c */
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493 .uleb128 0xa
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494 .byte 0x9d /* DW_CFA_offset, column 0x1d */
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495 .uleb128 0x8
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496 .byte 0x9e /* DW_CFA_offset, column 0x1e */
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497 .uleb128 0x6
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498 .byte 0x9f /* DW_CFA_offset, column 0x1f */
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499 .uleb128 0x4
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500 .byte 0xa0 /* DW_CFA_offset, column 0x20 */
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501 .uleb128 0x2
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502 .byte 0x4 /* DW_CFA_advance_loc4 */
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503 .4byte datalabel .LCFI2-datalabel .LCFI1
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504 .byte 0xd /* DW_CFA_def_cfa_register */
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505 .uleb128 0xe
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506 .align 2
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507 .LEFDE1:
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508
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509 .LSFDE3:
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510 .4byte datalabel .LEFDE3-datalabel .LASFDE3 /* FDE Length */
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511 .LASFDE3:
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512 .4byte datalabel .LASFDE3-datalabel __FRAME_BEGIN__
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513 #ifdef PIC
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514 .4byte .LFB2-. /* FDE initial location */
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515 #else
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516 .4byte .LFB2 /* FDE initial location */
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517 #endif
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518 .4byte datalabel .LFE2-datalabel .LFB2 /* FDE address range */
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519 #ifdef PIC
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520 .uleb128 0x0 /* Augmentation size */
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521 #endif
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522 .byte 0x4 /* DW_CFA_advance_loc4 */
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523 .4byte datalabel .LCFI3-datalabel .LFB2
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524 .byte 0xe /* DW_CFA_def_cfa_offset */
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525 .uleb128 0x88
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526 .byte 0x4 /* DW_CFA_advance_loc4 */
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527 .4byte datalabel .LCFI4-datalabel .LCFI3
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528 .byte 0x8c /* DW_CFA_offset, column 0xc */
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529 .uleb128 0x21
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530 .byte 0x8e /* DW_CFA_offset, column 0xe */
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531 .uleb128 0x20
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532 .byte 0x92 /* DW_CFA_offset, column 0x12 */
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533 .uleb128 0x1f
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534 .byte 0x4 /* DW_CFA_advance_loc4 */
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535 .4byte datalabel .LCFI5-datalabel .LCFI4
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536 .byte 0xd /* DW_CFA_def_cfa_register */
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537 .uleb128 0xe
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538 .align 2
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539 .LEFDE3:
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