Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/moxie/moxie.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | f6334be47118 |
children | 84e7813d76e9 |
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1 /* Target Code for moxie |
111 | 2 Copyright (C) 2008-2017 Free Software Foundation, Inc. |
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3 Contributed by Anthony Green. |
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4 |
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5 This file is part of GCC. |
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6 |
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7 GCC is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published |
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9 by the Free Software Foundation; either version 3, or (at your |
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10 option) any later version. |
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11 |
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12 GCC is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
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15 License for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with GCC; see the file COPYING3. If not see |
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19 <http://www.gnu.org/licenses/>. */ |
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20 |
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21 #include "config.h" |
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22 #include "system.h" |
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23 #include "coretypes.h" |
111 | 24 #include "backend.h" |
25 #include "target.h" | |
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26 #include "rtl.h" |
111 | 27 #include "tree.h" |
28 #include "stringpool.h" | |
29 #include "attribs.h" | |
30 #include "df.h" | |
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31 #include "regs.h" |
111 | 32 #include "memmodel.h" |
33 #include "emit-rtl.h" | |
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34 #include "diagnostic-core.h" |
111 | 35 #include "output.h" |
36 #include "stor-layout.h" | |
37 #include "varasm.h" | |
38 #include "calls.h" | |
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39 #include "expr.h" |
111 | 40 #include "builtins.h" |
41 | |
42 /* This file should be included last. */ | |
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43 #include "target-def.h" |
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44 |
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45 #define LOSE_AND_RETURN(msgid, x) \ |
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46 do \ |
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47 { \ |
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48 moxie_operand_lossage (msgid, x); \ |
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49 return; \ |
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50 } while (0) |
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51 |
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52 /* Worker function for TARGET_RETURN_IN_MEMORY. */ |
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53 |
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54 static bool |
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55 moxie_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED) |
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56 { |
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57 const HOST_WIDE_INT size = int_size_in_bytes (type); |
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58 return (size == -1 || size > 2 * UNITS_PER_WORD); |
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59 } |
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60 |
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61 /* Define how to find the value returned by a function. |
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62 VALTYPE is the data type of the value (as a tree). |
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63 If the precise function being called is known, FUNC is its |
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64 FUNCTION_DECL; otherwise, FUNC is 0. |
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65 |
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66 We always return values in register $r0 for moxie. */ |
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67 |
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68 static rtx |
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69 moxie_function_value (const_tree valtype, |
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70 const_tree fntype_or_decl ATTRIBUTE_UNUSED, |
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71 bool outgoing ATTRIBUTE_UNUSED) |
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72 { |
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73 return gen_rtx_REG (TYPE_MODE (valtype), MOXIE_R0); |
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74 } |
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75 |
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76 /* Define how to find the value returned by a library function. |
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77 |
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78 We always return values in register $r0 for moxie. */ |
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79 |
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80 static rtx |
111 | 81 moxie_libcall_value (machine_mode mode, |
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82 const_rtx fun ATTRIBUTE_UNUSED) |
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83 { |
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84 return gen_rtx_REG (mode, MOXIE_R0); |
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85 } |
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86 |
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87 /* Handle TARGET_FUNCTION_VALUE_REGNO_P. |
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88 |
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89 We always return values in register $r0 for moxie. */ |
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90 |
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91 static bool |
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92 moxie_function_value_regno_p (const unsigned int regno) |
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93 { |
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94 return (regno == MOXIE_R0); |
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95 } |
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96 |
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97 /* Emit an error message when we're in an asm, and a fatal error for |
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98 "normal" insns. Formatted output isn't easily implemented, since we |
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99 use output_operand_lossage to output the actual message and handle the |
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100 categorization of the error. */ |
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101 |
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102 static void |
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103 moxie_operand_lossage (const char *msgid, rtx op) |
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104 { |
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105 debug_rtx (op); |
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106 output_operand_lossage ("%s", msgid); |
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107 } |
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108 |
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109 /* The PRINT_OPERAND_ADDRESS worker. */ |
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110 |
111 | 111 static void |
112 moxie_print_operand_address (FILE *file, machine_mode, rtx x) | |
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113 { |
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114 switch (GET_CODE (x)) |
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115 { |
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116 case REG: |
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117 fprintf (file, "(%s)", reg_names[REGNO (x)]); |
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118 break; |
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119 |
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120 case PLUS: |
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121 switch (GET_CODE (XEXP (x, 1))) |
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122 { |
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123 case CONST_INT: |
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124 fprintf (file, "%ld(%s)", |
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125 INTVAL(XEXP (x, 1)), reg_names[REGNO (XEXP (x, 0))]); |
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126 break; |
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127 case SYMBOL_REF: |
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128 output_addr_const (file, XEXP (x, 1)); |
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129 fprintf (file, "(%s)", reg_names[REGNO (XEXP (x, 0))]); |
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130 break; |
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131 case CONST: |
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132 { |
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133 rtx plus = XEXP (XEXP (x, 1), 0); |
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134 if (GET_CODE (XEXP (plus, 0)) == SYMBOL_REF |
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135 && CONST_INT_P (XEXP (plus, 1))) |
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136 { |
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137 output_addr_const(file, XEXP (plus, 0)); |
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138 fprintf (file,"+%ld(%s)", INTVAL (XEXP (plus, 1)), |
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139 reg_names[REGNO (XEXP (x, 0))]); |
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140 } |
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141 else |
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142 abort(); |
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143 } |
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144 break; |
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145 default: |
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146 abort(); |
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147 } |
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148 break; |
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149 |
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150 default: |
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151 output_addr_const (file, x); |
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152 break; |
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153 } |
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154 } |
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155 |
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156 /* The PRINT_OPERAND worker. */ |
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157 |
111 | 158 static void |
55
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159 moxie_print_operand (FILE *file, rtx x, int code) |
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160 { |
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161 rtx operand = x; |
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162 |
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163 /* New code entries should just be added to the switch below. If |
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164 handling is finished, just return. If handling was just a |
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165 modification of the operand, the modified operand should be put in |
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166 "operand", and then do a break to let default handling |
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167 (zero-modifier) output the operand. */ |
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168 |
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169 switch (code) |
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170 { |
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171 case 0: |
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172 /* No code, print as usual. */ |
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173 break; |
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174 |
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175 default: |
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176 LOSE_AND_RETURN ("invalid operand modifier letter", x); |
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177 } |
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178 |
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179 /* Print an operand as without a modifier letter. */ |
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180 switch (GET_CODE (operand)) |
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181 { |
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182 case REG: |
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183 if (REGNO (operand) > MOXIE_R13) |
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184 internal_error ("internal error: bad register: %d", REGNO (operand)); |
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185 fprintf (file, "%s", reg_names[REGNO (operand)]); |
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186 return; |
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187 |
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188 case MEM: |
111 | 189 output_address (GET_MODE (XEXP (operand, 0)), XEXP (operand, 0)); |
55
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190 return; |
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191 |
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192 default: |
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193 /* No need to handle all strange variants, let output_addr_const |
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194 do it for us. */ |
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195 if (CONSTANT_P (operand)) |
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196 { |
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197 output_addr_const (file, operand); |
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198 return; |
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199 } |
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200 |
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201 LOSE_AND_RETURN ("unexpected operand", x); |
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202 } |
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203 } |
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204 |
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205 /* Per-function machine data. */ |
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206 struct GTY(()) machine_function |
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207 { |
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208 /* Number of bytes saved on the stack for callee saved registers. */ |
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209 int callee_saved_reg_size; |
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210 |
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211 /* Number of bytes saved on the stack for local variables. */ |
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212 int local_vars_size; |
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213 |
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214 /* The sum of 2 sizes: locals vars and padding byte for saving the |
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215 * registers. Used in expand_prologue () and expand_epilogue(). */ |
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216 int size_for_adjusting_sp; |
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217 }; |
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218 |
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219 /* Zero initialization is OK for all current fields. */ |
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220 |
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221 static struct machine_function * |
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222 moxie_init_machine_status (void) |
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223 { |
111 | 224 return ggc_cleared_alloc<machine_function> (); |
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225 } |
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226 |
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227 |
111 | 228 /* The TARGET_OPTION_OVERRIDE worker. */ |
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229 static void |
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230 moxie_option_override (void) |
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231 { |
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232 /* Set the per-function-data initializer. */ |
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233 init_machine_status = moxie_init_machine_status; |
111 | 234 |
235 #ifdef TARGET_MOXIEBOX | |
236 target_flags |= MASK_HAS_MULX; | |
237 #endif | |
55
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238 } |
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239 |
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240 /* Compute the size of the local area and the size to be adjusted by the |
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241 * prologue and epilogue. */ |
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242 |
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243 static void |
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244 moxie_compute_frame (void) |
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245 { |
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246 /* For aligning the local variables. */ |
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247 int stack_alignment = STACK_BOUNDARY / BITS_PER_UNIT; |
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248 int padding_locals; |
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249 int regno; |
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250 |
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251 /* Padding needed for each element of the frame. */ |
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252 cfun->machine->local_vars_size = get_frame_size (); |
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253 |
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254 /* Align to the stack alignment. */ |
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255 padding_locals = cfun->machine->local_vars_size % stack_alignment; |
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256 if (padding_locals) |
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257 padding_locals = stack_alignment - padding_locals; |
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258 |
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259 cfun->machine->local_vars_size += padding_locals; |
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260 |
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261 cfun->machine->callee_saved_reg_size = 0; |
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262 |
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263 /* Save callee-saved registers. */ |
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264 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) |
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265 if (df_regs_ever_live_p (regno) && (! call_used_regs[regno])) |
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266 cfun->machine->callee_saved_reg_size += 4; |
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267 |
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268 cfun->machine->size_for_adjusting_sp = |
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269 crtl->args.pretend_args_size |
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270 + cfun->machine->local_vars_size |
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271 + (ACCUMULATE_OUTGOING_ARGS ? crtl->outgoing_args_size : 0); |
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272 } |
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273 |
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274 void |
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275 moxie_expand_prologue (void) |
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276 { |
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277 int regno; |
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278 rtx insn; |
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279 |
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280 moxie_compute_frame (); |
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281 |
111 | 282 if (flag_stack_usage_info) |
283 current_function_static_stack_size = cfun->machine->size_for_adjusting_sp; | |
284 | |
55
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285 /* Save callee-saved registers. */ |
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286 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) |
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287 { |
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288 if (!fixed_regs[regno] && df_regs_ever_live_p (regno) && !call_used_regs[regno]) |
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289 { |
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290 insn = emit_insn (gen_movsi_push (gen_rtx_REG (Pmode, regno))); |
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291 RTX_FRAME_RELATED_P (insn) = 1; |
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292 } |
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293 } |
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294 |
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295 if (cfun->machine->size_for_adjusting_sp > 0) |
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296 { |
111 | 297 int i = cfun->machine->size_for_adjusting_sp; |
298 while ((i >= 255) && (i <= 510)) | |
55
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299 { |
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300 insn = emit_insn (gen_subsi3 (stack_pointer_rtx, |
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301 stack_pointer_rtx, |
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302 GEN_INT (255))); |
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303 RTX_FRAME_RELATED_P (insn) = 1; |
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304 i -= 255; |
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305 } |
111 | 306 if (i <= 255) |
55
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307 { |
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308 insn = emit_insn (gen_subsi3 (stack_pointer_rtx, |
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309 stack_pointer_rtx, |
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310 GEN_INT (i))); |
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311 RTX_FRAME_RELATED_P (insn) = 1; |
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312 } |
111 | 313 else |
314 { | |
315 rtx reg = gen_rtx_REG (SImode, MOXIE_R12); | |
316 insn = emit_move_insn (reg, GEN_INT (i)); | |
317 RTX_FRAME_RELATED_P (insn) = 1; | |
318 insn = emit_insn (gen_subsi3 (stack_pointer_rtx, | |
319 stack_pointer_rtx, | |
320 reg)); | |
321 RTX_FRAME_RELATED_P (insn) = 1; | |
322 } | |
55
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323 } |
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324 } |
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325 |
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326 void |
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327 moxie_expand_epilogue (void) |
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328 { |
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329 int regno; |
67
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parents:
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|
330 rtx reg; |
55
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331 |
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332 if (cfun->machine->callee_saved_reg_size != 0) |
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333 { |
111 | 334 reg = gen_rtx_REG (Pmode, MOXIE_R12); |
55
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335 if (cfun->machine->callee_saved_reg_size <= 255) |
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336 { |
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337 emit_move_insn (reg, hard_frame_pointer_rtx); |
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338 emit_insn (gen_subsi3 |
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339 (reg, reg, |
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340 GEN_INT (cfun->machine->callee_saved_reg_size))); |
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341 } |
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342 else |
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343 { |
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344 emit_move_insn (reg, |
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345 GEN_INT (-cfun->machine->callee_saved_reg_size)); |
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346 emit_insn (gen_addsi3 (reg, reg, hard_frame_pointer_rtx)); |
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347 } |
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348 for (regno = FIRST_PSEUDO_REGISTER; regno-- > 0; ) |
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349 if (!fixed_regs[regno] && !call_used_regs[regno] |
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350 && df_regs_ever_live_p (regno)) |
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351 { |
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352 rtx preg = gen_rtx_REG (Pmode, regno); |
67
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parents:
63
diff
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|
353 emit_insn (gen_movsi_pop (reg, preg)); |
55
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354 } |
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355 } |
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356 |
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357 emit_jump_insn (gen_returner ()); |
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358 } |
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359 |
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360 /* Implements the macro INITIAL_ELIMINATION_OFFSET, return the OFFSET. */ |
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361 |
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362 int |
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363 moxie_initial_elimination_offset (int from, int to) |
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364 { |
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365 int ret; |
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|
366 |
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parents:
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367 if ((from) == FRAME_POINTER_REGNUM && (to) == HARD_FRAME_POINTER_REGNUM) |
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parents:
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|
368 { |
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parents:
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|
369 /* Compute this since we need to use cfun->machine->local_vars_size. */ |
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parents:
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370 moxie_compute_frame (); |
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parents:
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371 ret = -cfun->machine->callee_saved_reg_size; |
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parents:
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|
372 } |
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parents:
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373 else if ((from) == ARG_POINTER_REGNUM && (to) == HARD_FRAME_POINTER_REGNUM) |
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parents:
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374 ret = 0x00; |
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375 else |
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parents:
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376 abort (); |
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377 |
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378 return ret; |
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parents:
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379 } |
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380 |
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parents:
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381 /* Worker function for TARGET_SETUP_INCOMING_VARARGS. */ |
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382 |
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parents:
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383 static void |
111 | 384 moxie_setup_incoming_varargs (cumulative_args_t cum_v, |
385 machine_mode mode ATTRIBUTE_UNUSED, | |
55
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386 tree type ATTRIBUTE_UNUSED, |
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parents:
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387 int *pretend_size, int no_rtl) |
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parents:
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388 { |
111 | 389 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
55
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parents:
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390 int regno; |
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391 int regs = 8 - *cum; |
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392 |
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parents:
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393 *pretend_size = regs < 0 ? 0 : GET_MODE_SIZE (SImode) * regs; |
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394 |
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395 if (no_rtl) |
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396 return; |
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397 |
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398 for (regno = *cum; regno < 8; regno++) |
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parents:
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399 { |
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400 rtx reg = gen_rtx_REG (SImode, regno); |
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parents:
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401 rtx slot = gen_rtx_PLUS (Pmode, |
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parents:
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402 gen_rtx_REG (SImode, ARG_POINTER_REGNUM), |
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parents:
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403 GEN_INT (UNITS_PER_WORD * (3 + (regno-2)))); |
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parents:
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404 |
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parents:
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405 emit_move_insn (gen_rtx_MEM (SImode, slot), reg); |
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parents:
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406 } |
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parents:
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407 } |
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parents:
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408 |
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parents:
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409 |
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parents:
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410 /* Return the fixed registers used for condition codes. */ |
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parents:
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411 |
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parents:
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412 static bool |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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413 moxie_fixed_condition_code_regs (unsigned int *p1, unsigned int *p2) |
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parents:
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414 { |
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parents:
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415 *p1 = CC_REG; |
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parents:
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416 *p2 = INVALID_REGNUM; |
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parents:
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417 return true; |
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parents:
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418 } |
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parents:
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419 |
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parents:
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|
420 /* Return the next register to be used to hold a function argument or |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
421 NULL_RTX if there's no more space. */ |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
422 |
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
423 static rtx |
111 | 424 moxie_function_arg (cumulative_args_t cum_v, machine_mode mode, |
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
425 const_tree type ATTRIBUTE_UNUSED, |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
426 bool named ATTRIBUTE_UNUSED) |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
427 { |
111 | 428 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
429 | |
67
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parents:
63
diff
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|
430 if (*cum < 8) |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
431 return gen_rtx_REG (mode, *cum); |
55
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parents:
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|
432 else |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
433 return NULL_RTX; |
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parents:
diff
changeset
|
434 } |
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parents:
diff
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|
435 |
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
436 #define MOXIE_FUNCTION_ARG_SIZE(MODE, TYPE) \ |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
437 ((MODE) != BLKmode ? GET_MODE_SIZE (MODE) \ |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
438 : (unsigned) int_size_in_bytes (TYPE)) |
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parents:
63
diff
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|
439 |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
440 static void |
111 | 441 moxie_function_arg_advance (cumulative_args_t cum_v, machine_mode mode, |
67
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parents:
63
diff
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|
442 const_tree type, bool named ATTRIBUTE_UNUSED) |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
443 { |
111 | 444 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
445 | |
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
446 *cum = (*cum < MOXIE_R6 |
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
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|
447 ? *cum + ((3 + MOXIE_FUNCTION_ARG_SIZE (mode, type)) / 4) |
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parents:
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diff
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448 : *cum); |
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parents:
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diff
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|
449 } |
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parents:
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diff
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|
450 |
55
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parents:
diff
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|
451 /* Return non-zero if the function argument described by TYPE is to be |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
452 passed by reference. */ |
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parents:
diff
changeset
|
453 |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
454 static bool |
111 | 455 moxie_pass_by_reference (cumulative_args_t cum ATTRIBUTE_UNUSED, |
456 machine_mode mode, const_tree type, | |
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
457 bool named ATTRIBUTE_UNUSED) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
458 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
459 unsigned HOST_WIDE_INT size; |
77e2b8dfacca
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parents:
diff
changeset
|
460 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
461 if (type) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
462 { |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
463 if (AGGREGATE_TYPE_P (type)) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
464 return true; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
465 size = int_size_in_bytes (type); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
466 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
467 else |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
468 size = GET_MODE_SIZE (mode); |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
469 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
470 return size > 4*6; |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
471 } |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
472 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
473 /* Some function arguments will only partially fit in the registers |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
474 that hold arguments. Given a new arg, return the number of bytes |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
475 that fit in argument passing registers. */ |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
476 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
477 static int |
111 | 478 moxie_arg_partial_bytes (cumulative_args_t cum_v, |
479 machine_mode mode, | |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
480 tree type, bool named) |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
481 { |
111 | 482 CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v); |
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
483 int bytes_left, size; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
484 |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
485 if (*cum >= 8) |
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
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|
486 return 0; |
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487 |
111 | 488 if (moxie_pass_by_reference (cum_v, mode, type, named)) |
55
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489 size = 4; |
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490 else if (type) |
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491 { |
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492 if (AGGREGATE_TYPE_P (type)) |
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493 return 0; |
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494 size = int_size_in_bytes (type); |
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495 } |
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496 else |
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497 size = GET_MODE_SIZE (mode); |
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498 |
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499 bytes_left = (4 * 6) - ((*cum - 2) * 4); |
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500 |
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501 if (size > bytes_left) |
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502 return bytes_left; |
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503 else |
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504 return 0; |
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505 } |
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506 |
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507 /* Worker function for TARGET_STATIC_CHAIN. */ |
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508 |
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509 static rtx |
111 | 510 moxie_static_chain (const_tree ARG_UNUSED (fndecl_or_type), bool incoming_p) |
55
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511 { |
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512 rtx addr, mem; |
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513 |
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514 if (incoming_p) |
111 | 515 addr = plus_constant (Pmode, arg_pointer_rtx, 2 * UNITS_PER_WORD); |
55
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516 else |
111 | 517 addr = plus_constant (Pmode, stack_pointer_rtx, -UNITS_PER_WORD); |
55
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518 |
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519 mem = gen_rtx_MEM (Pmode, addr); |
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520 MEM_NOTRAP_P (mem) = 1; |
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521 |
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522 return mem; |
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523 } |
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524 |
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525 /* Worker function for TARGET_ASM_TRAMPOLINE_TEMPLATE. */ |
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526 |
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527 static void |
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528 moxie_asm_trampoline_template (FILE *f) |
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529 { |
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530 fprintf (f, "\tpush $sp, $r0\n"); |
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531 fprintf (f, "\tldi.l $r0, 0x0\n"); |
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532 fprintf (f, "\tsto.l 0x8($fp), $r0\n"); |
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533 fprintf (f, "\tpop $sp, $r0\n"); |
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534 fprintf (f, "\tjmpa 0x0\n"); |
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535 } |
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536 |
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537 /* Worker function for TARGET_TRAMPOLINE_INIT. */ |
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538 |
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539 static void |
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540 moxie_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) |
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541 { |
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542 rtx mem, fnaddr = XEXP (DECL_RTL (fndecl), 0); |
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543 |
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544 emit_block_move (m_tramp, assemble_trampoline_template (), |
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545 GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL); |
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546 |
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547 mem = adjust_address (m_tramp, SImode, 4); |
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548 emit_move_insn (mem, chain_value); |
111 | 549 mem = adjust_address (m_tramp, SImode, 16); |
55
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550 emit_move_insn (mem, fnaddr); |
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551 } |
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552 |
111 | 553 /* Return true for memory offset addresses between -32768 and 32767. */ |
554 bool | |
555 moxie_offset_address_p (rtx x) | |
556 { | |
557 x = XEXP (x, 0); | |
558 | |
559 if (GET_CODE (x) == PLUS) | |
560 { | |
561 x = XEXP (x, 1); | |
562 if (GET_CODE (x) == CONST_INT) | |
563 { | |
564 unsigned int v = INTVAL (x) & 0xFFFF8000; | |
565 return (v == 0xFFFF8000 || v == 0x00000000); | |
566 } | |
567 } | |
568 return 0; | |
569 } | |
570 | |
571 /* Helper function for `moxie_legitimate_address_p'. */ | |
572 | |
573 static bool | |
574 moxie_reg_ok_for_base_p (const_rtx reg, bool strict_p) | |
575 { | |
576 int regno = REGNO (reg); | |
577 | |
578 if (strict_p) | |
579 return HARD_REGNO_OK_FOR_BASE_P (regno) | |
580 || HARD_REGNO_OK_FOR_BASE_P (reg_renumber[regno]); | |
581 else | |
582 return !HARD_REGISTER_NUM_P (regno) | |
583 || HARD_REGNO_OK_FOR_BASE_P (regno); | |
584 } | |
585 | |
586 /* Worker function for TARGET_LEGITIMATE_ADDRESS_P. */ | |
587 | |
588 static bool | |
589 moxie_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED, | |
590 rtx x, bool strict_p, | |
591 addr_space_t as) | |
592 { | |
593 gcc_assert (ADDR_SPACE_GENERIC_P (as)); | |
594 | |
595 if (GET_CODE(x) == PLUS | |
596 && REG_P (XEXP (x, 0)) | |
597 && moxie_reg_ok_for_base_p (XEXP (x, 0), strict_p) | |
598 && CONST_INT_P (XEXP (x, 1)) | |
599 && IN_RANGE (INTVAL (XEXP (x, 1)), -32768, 32767)) | |
600 return true; | |
601 if (REG_P (x) && moxie_reg_ok_for_base_p (x, strict_p)) | |
602 return true; | |
603 if (GET_CODE (x) == SYMBOL_REF | |
604 || GET_CODE (x) == LABEL_REF | |
605 || GET_CODE (x) == CONST) | |
606 return true; | |
607 return false; | |
608 } | |
609 | |
55
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610 /* The Global `targetm' Variable. */ |
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611 |
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|
612 /* Initialize the GCC target structure. */ |
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|
613 |
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614 #undef TARGET_PROMOTE_PROTOTYPES |
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615 #define TARGET_PROMOTE_PROTOTYPES hook_bool_const_tree_true |
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616 |
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617 #undef TARGET_RETURN_IN_MEMORY |
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618 #define TARGET_RETURN_IN_MEMORY moxie_return_in_memory |
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619 #undef TARGET_MUST_PASS_IN_STACK |
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620 #define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size |
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621 #undef TARGET_PASS_BY_REFERENCE |
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622 #define TARGET_PASS_BY_REFERENCE moxie_pass_by_reference |
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623 #undef TARGET_ARG_PARTIAL_BYTES |
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624 #define TARGET_ARG_PARTIAL_BYTES moxie_arg_partial_bytes |
67
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625 #undef TARGET_FUNCTION_ARG |
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626 #define TARGET_FUNCTION_ARG moxie_function_arg |
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627 #undef TARGET_FUNCTION_ARG_ADVANCE |
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628 #define TARGET_FUNCTION_ARG_ADVANCE moxie_function_arg_advance |
55
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629 |
111 | 630 #undef TARGET_LRA_P |
631 #define TARGET_LRA_P hook_bool_void_false | |
632 | |
633 #undef TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P | |
634 #define TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P moxie_legitimate_address_p | |
55
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635 |
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636 #undef TARGET_SETUP_INCOMING_VARARGS |
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637 #define TARGET_SETUP_INCOMING_VARARGS moxie_setup_incoming_varargs |
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638 |
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639 #undef TARGET_FIXED_CONDITION_CODE_REGS |
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640 #define TARGET_FIXED_CONDITION_CODE_REGS moxie_fixed_condition_code_regs |
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641 |
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642 /* Define this to return an RTX representing the place where a |
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643 function returns or receives a value of data type RET_TYPE, a tree |
111 | 644 node representing a data type. */ |
55
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645 #undef TARGET_FUNCTION_VALUE |
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646 #define TARGET_FUNCTION_VALUE moxie_function_value |
67
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647 #undef TARGET_LIBCALL_VALUE |
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648 #define TARGET_LIBCALL_VALUE moxie_libcall_value |
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649 #undef TARGET_FUNCTION_VALUE_REGNO_P |
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650 #define TARGET_FUNCTION_VALUE_REGNO_P moxie_function_value_regno_p |
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651 |
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652 #undef TARGET_FRAME_POINTER_REQUIRED |
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653 #define TARGET_FRAME_POINTER_REQUIRED hook_bool_void_true |
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654 |
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655 #undef TARGET_STATIC_CHAIN |
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656 #define TARGET_STATIC_CHAIN moxie_static_chain |
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657 #undef TARGET_ASM_TRAMPOLINE_TEMPLATE |
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658 #define TARGET_ASM_TRAMPOLINE_TEMPLATE moxie_asm_trampoline_template |
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659 #undef TARGET_TRAMPOLINE_INIT |
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660 #define TARGET_TRAMPOLINE_INIT moxie_trampoline_init |
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661 |
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662 #undef TARGET_OPTION_OVERRIDE |
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663 #define TARGET_OPTION_OVERRIDE moxie_option_override |
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664 |
111 | 665 #undef TARGET_PRINT_OPERAND |
666 #define TARGET_PRINT_OPERAND moxie_print_operand | |
667 #undef TARGET_PRINT_OPERAND_ADDRESS | |
668 #define TARGET_PRINT_OPERAND_ADDRESS moxie_print_operand_address | |
669 | |
670 #undef TARGET_CONSTANT_ALIGNMENT | |
671 #define TARGET_CONSTANT_ALIGNMENT constant_alignment_word_strings | |
672 | |
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673 struct gcc_target targetm = TARGET_INITIALIZER; |
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674 |
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675 #include "gt-moxie.h" |