Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/spu/cachemgr.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
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date | Tue, 22 Mar 2011 17:18:12 +0900 |
parents | 77e2b8dfacca |
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rev | line source |
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1 /* Copyright (C) 2008, 2009 Free Software Foundation, Inc. |
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2 |
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3 This file is part of GCC. |
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4 |
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5 GCC is free software; you can redistribute it and/or modify it under |
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6 the terms of the GNU General Public License as published by the Free |
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7 Software Foundation; either version 3, or (at your option) any later |
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8 version. |
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9 |
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10 GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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11 WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 for more details. |
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14 |
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15 Under Section 7 of GPL version 3, you are granted additional |
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16 permissions described in the GCC Runtime Library Exception, version |
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17 3.1, as published by the Free Software Foundation. |
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18 |
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19 You should have received a copy of the GNU General Public License and |
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20 a copy of the GCC Runtime Library Exception along with this program; |
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21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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22 <http://www.gnu.org/licenses/>. */ |
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23 |
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24 #include <spu_mfcio.h> |
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25 #include <spu_internals.h> |
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26 #include <spu_intrinsics.h> |
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27 #include <spu_cache.h> |
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28 |
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29 extern unsigned long long __ea_local_store; |
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30 extern char __cache_tag_array_size; |
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31 |
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32 #define LINE_SIZE 128 |
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33 #define TAG_MASK (LINE_SIZE - 1) |
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34 |
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35 #define WAYS 4 |
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36 #define SET_MASK ((int) &__cache_tag_array_size - LINE_SIZE) |
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37 |
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38 #define CACHE_LINES ((int) &__cache_tag_array_size / \ |
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39 sizeof (struct __cache_tag_array) * WAYS) |
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40 |
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41 struct __cache_tag_array |
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42 { |
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43 unsigned int tag_lo[WAYS]; |
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44 unsigned int tag_hi[WAYS]; |
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45 void *base[WAYS]; |
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46 int reserved[WAYS]; |
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47 vector unsigned short dirty_bits[WAYS]; |
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48 }; |
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49 |
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50 extern struct __cache_tag_array __cache_tag_array[]; |
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51 extern char __cache[]; |
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52 |
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53 /* In order to make the code seem a little cleaner, and to avoid having |
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54 64/32 bit ifdefs all over the place, we use macros. */ |
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55 |
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56 #ifdef __EA64__ |
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57 typedef unsigned long long addr; |
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58 |
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59 #define CHECK_TAG(_entry, _way, _tag) \ |
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60 ((_entry)->tag_lo[(_way)] == ((_tag) & 0xFFFFFFFF) \ |
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61 && (_entry)->tag_hi[(_way)] == ((_tag) >> 32)) |
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62 |
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63 #define GET_TAG(_entry, _way) \ |
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64 ((unsigned long long)(_entry)->tag_hi[(_way)] << 32 \ |
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65 | (unsigned long long)(_entry)->tag_lo[(_way)]) |
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66 |
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67 #define SET_TAG(_entry, _way, _tag) \ |
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68 (_entry)->tag_lo[(_way)] = (_tag) & 0xFFFFFFFF; \ |
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69 (_entry)->tag_hi[(_way)] = (_tag) >> 32 |
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70 |
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71 #else /*__EA32__*/ |
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72 typedef unsigned long addr; |
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73 |
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74 #define CHECK_TAG(_entry, _way, _tag) \ |
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75 ((_entry)->tag_lo[(_way)] == (_tag)) |
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76 |
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77 #define GET_TAG(_entry, _way) \ |
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78 ((_entry)->tag_lo[(_way)]) |
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79 |
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80 #define SET_TAG(_entry, _way, _tag) \ |
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81 (_entry)->tag_lo[(_way)] = (_tag) |
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82 |
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83 #endif |
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84 |
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85 /* In GET_ENTRY, we cast away the high 32 bits, |
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86 as the tag is only in the low 32. */ |
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87 |
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88 #define GET_ENTRY(_addr) \ |
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89 ((struct __cache_tag_array *) \ |
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90 si_to_uint (si_a (si_and (si_from_uint ((unsigned int) (addr) (_addr)), \ |
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91 si_from_uint (SET_MASK)), \ |
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92 si_from_uint ((unsigned int) __cache_tag_array)))) |
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93 |
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94 #define GET_CACHE_LINE(_addr, _way) \ |
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95 ((void *) (__cache + ((_addr) & SET_MASK) * WAYS) + ((_way) * LINE_SIZE)); |
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96 |
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97 #define CHECK_DIRTY(_vec) (si_to_uint (si_orx ((qword) (_vec)))) |
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98 #define SET_EMPTY(_entry, _way) ((_entry)->tag_lo[(_way)] = 1) |
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99 #define CHECK_EMPTY(_entry, _way) ((_entry)->tag_lo[(_way)] == 1) |
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100 |
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101 #define LS_FLAG 0x80000000 |
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102 #define SET_IS_LS(_entry, _way) ((_entry)->reserved[(_way)] |= LS_FLAG) |
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103 #define CHECK_IS_LS(_entry, _way) ((_entry)->reserved[(_way)] & LS_FLAG) |
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104 #define GET_LRU(_entry, _way) ((_entry)->reserved[(_way)] & ~LS_FLAG) |
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105 |
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106 static int dma_tag = 32; |
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107 |
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108 static void |
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109 __cache_evict_entry (struct __cache_tag_array *entry, int way) |
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110 { |
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111 addr tag = GET_TAG (entry, way); |
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112 |
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113 if (CHECK_DIRTY (entry->dirty_bits[way]) && !CHECK_IS_LS (entry, way)) |
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114 { |
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115 #ifdef NONATOMIC |
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116 /* Non-atomic writes. */ |
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117 unsigned int oldmask, mach_stat; |
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118 char *line = ((void *) 0); |
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119 |
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120 /* Enter critical section. */ |
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121 mach_stat = spu_readch (SPU_RdMachStat); |
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122 spu_idisable (); |
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123 |
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124 /* Issue DMA request. */ |
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125 line = GET_CACHE_LINE (entry->tag_lo[way], way); |
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126 mfc_put (line, tag, LINE_SIZE, dma_tag, 0, 0); |
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127 |
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128 /* Wait for DMA completion. */ |
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129 oldmask = mfc_read_tag_mask (); |
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130 mfc_write_tag_mask (1 << dma_tag); |
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131 mfc_read_tag_status_all (); |
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132 mfc_write_tag_mask (oldmask); |
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133 |
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134 /* Leave critical section. */ |
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135 if (__builtin_expect (mach_stat & 1, 0)) |
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136 spu_ienable (); |
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137 #else |
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138 /* Allocate a buffer large enough that we know it has 128 bytes |
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139 that are 128 byte aligned (for DMA). */ |
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140 |
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141 char buffer[LINE_SIZE + 127]; |
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142 qword *buf_ptr = (qword *) (((unsigned int) (buffer) + 127) & ~127); |
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143 qword *line = GET_CACHE_LINE (entry->tag_lo[way], way); |
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144 qword bits; |
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145 unsigned int mach_stat; |
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146 |
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147 /* Enter critical section. */ |
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148 mach_stat = spu_readch (SPU_RdMachStat); |
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149 spu_idisable (); |
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150 |
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151 do |
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152 { |
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153 /* We atomically read the current memory into a buffer |
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154 modify the dirty bytes in the buffer, and write it |
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155 back. If writeback fails, loop and try again. */ |
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156 |
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157 mfc_getllar (buf_ptr, tag, 0, 0); |
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158 mfc_read_atomic_status (); |
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159 |
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160 /* The method we're using to write 16 dirty bytes into |
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161 the buffer at a time uses fsmb which in turn uses |
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162 the least significant 16 bits of word 0, so we |
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163 load the bits and rotate so that the first bit of |
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164 the bitmap is in the first bit that fsmb will use. */ |
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165 |
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166 bits = (qword) entry->dirty_bits[way]; |
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167 bits = si_rotqbyi (bits, -2); |
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168 |
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169 /* Si_fsmb creates the mask of dirty bytes. |
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170 Use selb to nab the appropriate bits. */ |
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171 buf_ptr[0] = si_selb (buf_ptr[0], line[0], si_fsmb (bits)); |
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172 |
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173 /* Rotate to next 16 byte section of cache. */ |
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174 bits = si_rotqbyi (bits, 2); |
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175 |
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176 buf_ptr[1] = si_selb (buf_ptr[1], line[1], si_fsmb (bits)); |
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177 bits = si_rotqbyi (bits, 2); |
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178 buf_ptr[2] = si_selb (buf_ptr[2], line[2], si_fsmb (bits)); |
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179 bits = si_rotqbyi (bits, 2); |
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180 buf_ptr[3] = si_selb (buf_ptr[3], line[3], si_fsmb (bits)); |
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181 bits = si_rotqbyi (bits, 2); |
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182 buf_ptr[4] = si_selb (buf_ptr[4], line[4], si_fsmb (bits)); |
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183 bits = si_rotqbyi (bits, 2); |
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184 buf_ptr[5] = si_selb (buf_ptr[5], line[5], si_fsmb (bits)); |
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185 bits = si_rotqbyi (bits, 2); |
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186 buf_ptr[6] = si_selb (buf_ptr[6], line[6], si_fsmb (bits)); |
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187 bits = si_rotqbyi (bits, 2); |
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188 buf_ptr[7] = si_selb (buf_ptr[7], line[7], si_fsmb (bits)); |
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189 bits = si_rotqbyi (bits, 2); |
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190 |
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191 mfc_putllc (buf_ptr, tag, 0, 0); |
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192 } |
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193 while (mfc_read_atomic_status ()); |
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194 |
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195 /* Leave critical section. */ |
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196 if (__builtin_expect (mach_stat & 1, 0)) |
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197 spu_ienable (); |
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198 #endif |
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199 } |
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200 |
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201 /* In any case, marking the lo tag with 1 which denotes empty. */ |
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202 SET_EMPTY (entry, way); |
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203 entry->dirty_bits[way] = (vector unsigned short) si_from_uint (0); |
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204 } |
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205 |
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206 void |
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207 __cache_evict (__ea void *ea) |
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208 { |
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209 addr tag = (addr) ea & ~TAG_MASK; |
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210 struct __cache_tag_array *entry = GET_ENTRY (ea); |
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211 int i = 0; |
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212 |
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213 /* Cycles through all the possible ways an address could be at |
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214 and evicts the way if found. */ |
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215 |
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216 for (i = 0; i < WAYS; i++) |
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217 if (CHECK_TAG (entry, i, tag)) |
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218 __cache_evict_entry (entry, i); |
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219 } |
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220 |
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221 static void * |
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222 __cache_fill (int way, addr tag) |
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223 { |
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224 unsigned int oldmask, mach_stat; |
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225 char *line = ((void *) 0); |
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226 |
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227 /* Reserve our DMA tag. */ |
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228 if (dma_tag == 32) |
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229 dma_tag = mfc_tag_reserve (); |
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230 |
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231 /* Enter critical section. */ |
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232 mach_stat = spu_readch (SPU_RdMachStat); |
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233 spu_idisable (); |
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234 |
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235 /* Issue DMA request. */ |
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236 line = GET_CACHE_LINE (tag, way); |
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237 mfc_get (line, tag, LINE_SIZE, dma_tag, 0, 0); |
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238 |
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239 /* Wait for DMA completion. */ |
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240 oldmask = mfc_read_tag_mask (); |
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241 mfc_write_tag_mask (1 << dma_tag); |
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242 mfc_read_tag_status_all (); |
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243 mfc_write_tag_mask (oldmask); |
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244 |
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245 /* Leave critical section. */ |
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246 if (__builtin_expect (mach_stat & 1, 0)) |
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247 spu_ienable (); |
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248 |
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249 return (void *) line; |
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250 } |
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251 |
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252 static void |
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253 __cache_miss (__ea void *ea, struct __cache_tag_array *entry, int way) |
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254 { |
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255 |
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256 addr tag = (addr) ea & ~TAG_MASK; |
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257 unsigned int lru = 0; |
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258 int i = 0; |
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259 int idx = 0; |
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260 |
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261 /* If way > 4, then there are no empty slots, so we must evict |
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262 the least recently used entry. */ |
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263 if (way >= 4) |
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264 { |
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265 for (i = 0; i < WAYS; i++) |
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266 { |
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267 if (GET_LRU (entry, i) > lru) |
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268 { |
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269 lru = GET_LRU (entry, i); |
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270 idx = i; |
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271 } |
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272 } |
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273 __cache_evict_entry (entry, idx); |
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274 way = idx; |
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275 } |
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276 |
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277 /* Set the empty entry's tag and fill it's cache line. */ |
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278 |
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279 SET_TAG (entry, way, tag); |
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280 entry->reserved[way] = 0; |
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281 |
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282 /* Check if the address is just an effective address within the |
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283 SPU's local store. */ |
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284 |
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285 /* Because the LS is not 256k aligned, we can't do a nice and mask |
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286 here to compare, so we must check the whole range. */ |
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287 |
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288 if ((addr) ea >= (addr) __ea_local_store |
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289 && (addr) ea < (addr) (__ea_local_store + 0x40000)) |
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290 { |
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291 SET_IS_LS (entry, way); |
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292 entry->base[way] = |
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293 (void *) ((unsigned int) ((addr) ea - |
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294 (addr) __ea_local_store) & ~0x7f); |
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295 } |
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296 else |
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297 { |
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298 entry->base[way] = __cache_fill (way, tag); |
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299 } |
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300 } |
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301 |
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302 void * |
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303 __cache_fetch_dirty (__ea void *ea, int n_bytes_dirty) |
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304 { |
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305 #ifdef __EA64__ |
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306 unsigned int tag_hi; |
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307 qword etag_hi; |
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308 #endif |
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309 unsigned int tag_lo; |
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310 struct __cache_tag_array *entry; |
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311 |
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312 qword etag_lo; |
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313 qword equal; |
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314 qword bit_mask; |
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315 qword way; |
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316 |
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317 /* This first chunk, we merely fill the pointer and tag. */ |
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318 |
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319 entry = GET_ENTRY (ea); |
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320 |
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321 #ifndef __EA64__ |
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322 tag_lo = |
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323 si_to_uint (si_andc |
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324 (si_shufb |
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325 (si_from_uint ((addr) ea), si_from_uint (0), |
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326 si_from_uint (0x00010203)), si_from_uint (TAG_MASK))); |
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327 #else |
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328 tag_lo = |
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329 si_to_uint (si_andc |
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330 (si_shufb |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
331 (si_from_ullong ((addr) ea), si_from_uint (0), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
332 si_from_uint (0x04050607)), si_from_uint (TAG_MASK))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
333 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
334 tag_hi = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
335 si_to_uint (si_shufb |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
336 (si_from_ullong ((addr) ea), si_from_uint (0), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
337 si_from_uint (0x00010203))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
338 #endif |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
339 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
340 /* Increment LRU in reserved bytes. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
341 si_stqd (si_ai (si_lqd (si_from_ptr (entry), 48), 1), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
342 si_from_ptr (entry), 48); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
343 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
344 missreturn: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
345 /* Check if the entry's lo_tag is equal to the address' lo_tag. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
346 etag_lo = si_lqd (si_from_ptr (entry), 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
347 equal = si_ceq (etag_lo, si_from_uint (tag_lo)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
348 #ifdef __EA64__ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
349 /* And the high tag too. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
350 etag_hi = si_lqd (si_from_ptr (entry), 16); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
351 equal = si_and (equal, (si_ceq (etag_hi, si_from_uint (tag_hi)))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
352 #endif |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
353 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
354 if ((si_to_uint (si_orx (equal)) == 0)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
355 goto misshandler; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
356 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
357 if (n_bytes_dirty) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
358 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
359 /* way = 0x40,0x50,0x60,0x70 for each way, which is also the |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
360 offset of the appropriate dirty bits. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
361 way = si_shli (si_clz (si_gbb (equal)), 2); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
362 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
363 /* To create the bit_mask, we set it to all 1s (uint -1), then we |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
364 shift it over (128 - n_bytes_dirty) times. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
365 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
366 bit_mask = si_from_uint (-1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
367 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
368 bit_mask = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
369 si_shlqby (bit_mask, si_from_uint ((LINE_SIZE - n_bytes_dirty) / 8)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
370 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
371 bit_mask = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
372 si_shlqbi (bit_mask, si_from_uint ((LINE_SIZE - n_bytes_dirty) % 8)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
373 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
374 /* Rotate it around to the correct offset. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
375 bit_mask = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
376 si_rotqby (bit_mask, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
377 si_from_uint (-1 * ((addr) ea & TAG_MASK) / 8)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
378 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
379 bit_mask = |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
380 si_rotqbi (bit_mask, |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
381 si_from_uint (-1 * ((addr) ea & TAG_MASK) % 8)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
382 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
383 /* Update the dirty bits. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
384 si_stqx (si_or (si_lqx (si_from_ptr (entry), way), bit_mask), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
385 si_from_ptr (entry), way); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
386 }; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
387 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 /* We've definitely found the right entry, set LRU (reserved) to 0 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
389 maintaining the LS flag (MSB). */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
390 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
391 si_stqd (si_andc |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
392 (si_lqd (si_from_ptr (entry), 48), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
393 si_and (equal, si_from_uint (~(LS_FLAG)))), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
394 si_from_ptr (entry), 48); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
395 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
396 return (void *) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397 si_to_uint (si_a |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 (si_orx |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 (si_and (si_lqd (si_from_ptr (entry), 32), equal)), |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 si_from_uint (((unsigned int) (addr) ea) & TAG_MASK))); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 misshandler: |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 equal = si_ceqi (etag_lo, 1); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 __cache_miss (ea, entry, (si_to_uint (si_clz (si_gbb (equal))) - 16) >> 2); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 goto missreturn; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 void * |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 __cache_fetch (__ea void *ea) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 return __cache_fetch_dirty (ea, 0); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 __cache_touch (__ea void *ea __attribute__ ((unused))) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
417 /* NO-OP for now. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
419 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
420 void __cache_flush (void) __attribute__ ((destructor)); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 void |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
422 __cache_flush (void) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
423 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
424 struct __cache_tag_array *entry = __cache_tag_array; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
425 unsigned int i; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
426 int j; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
427 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 /* Cycle through each cache entry and evict all used ways. */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
429 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
430 for (i = 0; i < CACHE_LINES / WAYS; i++) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 { |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
432 for (j = 0; j < WAYS; j++) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 if (!CHECK_EMPTY (entry, j)) |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 __cache_evict_entry (entry, j); |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
435 |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436 entry++; |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
437 } |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
438 } |