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1 /* XL compiler Hardware Transactional Memory (HTM) execution intrinsics.
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2 Copyright (C) 2013-2018 Free Software Foundation, Inc.
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3 Contributed by Peter Bergner <bergner@vnet.ibm.com>.
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4
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5 This file 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 of the License, or (at your option)
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8 any later version.
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9
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10 This file is distributed in the hope that it will be useful, but WITHOUT
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11 ANY 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 #ifndef __HTM__
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25 # error "HTM instruction set not enabled"
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26 #endif /* __HTM__ */
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27
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28 #ifndef _HTMXLINTRIN_H
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29 #define _HTMXLINTRIN_H
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30
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31 #include <stdint.h>
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32 #include <htmintrin.h>
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33
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34 #ifdef __cplusplus
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35 extern "C" {
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36 #endif
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37
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38 #define _TEXASR_PTR(TM_BUF) \
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39 ((texasr_t *)((TM_BUF)+0))
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40 #define _TEXASRU_PTR(TM_BUF) \
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41 ((texasru_t *)((TM_BUF)+0))
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42 #define _TEXASRL_PTR(TM_BUF) \
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43 ((texasrl_t *)((TM_BUF)+4))
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44 #define _TFIAR_PTR(TM_BUF) \
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45 ((tfiar_t *)((TM_BUF)+8))
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46
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47 typedef char TM_buff_type[16];
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48
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49 /* Compatibility macro with s390. This macro can be used to determine
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50 whether a transaction was successfully started from the __TM_begin()
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51 and __TM_simple_begin() intrinsic functions below. */
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52 #define _HTM_TBEGIN_STARTED 1
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53
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54 extern __inline long
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55 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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56 __TM_simple_begin (void)
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57 {
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58 if (__builtin_expect (__builtin_tbegin (0), 1))
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59 return _HTM_TBEGIN_STARTED;
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60 return 0;
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61 }
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62
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63 extern __inline long
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64 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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65 __TM_begin (void* const TM_buff)
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66 {
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67 *_TEXASRL_PTR (TM_buff) = 0;
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68 if (__builtin_expect (__builtin_tbegin (0), 1))
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69 return _HTM_TBEGIN_STARTED;
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70 #ifdef __powerpc64__
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71 *_TEXASR_PTR (TM_buff) = __builtin_get_texasr ();
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72 #else
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73 *_TEXASRU_PTR (TM_buff) = __builtin_get_texasru ();
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74 *_TEXASRL_PTR (TM_buff) = __builtin_get_texasr ();
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75 #endif
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76 *_TFIAR_PTR (TM_buff) = __builtin_get_tfiar ();
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77 return 0;
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78 }
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79
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80 extern __inline long
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81 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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82 __TM_end (void)
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83 {
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84 unsigned char status = _HTM_STATE (__builtin_tend (0));
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85 if (__builtin_expect (status, _HTM_TRANSACTIONAL))
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86 return 1;
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87 return 0;
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88 }
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89
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90 extern __inline void
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91 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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92 __TM_abort (void)
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93 {
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94 __builtin_tabort (0);
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95 }
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96
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97 extern __inline void
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98 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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99 __TM_named_abort (unsigned char const code)
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100 {
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101 __builtin_tabort (code);
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102 }
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103
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104 extern __inline void
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105 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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106 __TM_resume (void)
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107 {
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108 __builtin_tresume ();
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109 }
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110
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111 extern __inline void
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112 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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113 __TM_suspend (void)
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114 {
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115 __builtin_tsuspend ();
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116 }
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117
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118 extern __inline long
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119 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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120 __TM_is_user_abort (void* const TM_buff)
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121 {
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122 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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123 return _TEXASRU_ABORT (texasru);
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124 }
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125
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126 extern __inline long
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127 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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128 __TM_is_named_user_abort (void* const TM_buff, unsigned char *code)
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129 {
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130 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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131
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132 *code = _TEXASRU_FAILURE_CODE (texasru);
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133 return _TEXASRU_ABORT (texasru);
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134 }
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135
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136 extern __inline long
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137 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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138 __TM_is_illegal (void* const TM_buff)
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139 {
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140 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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141 return _TEXASRU_DISALLOWED (texasru);
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142 }
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143
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144 extern __inline long
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145 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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146 __TM_is_footprint_exceeded (void* const TM_buff)
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147 {
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148 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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149 return _TEXASRU_FOOTPRINT_OVERFLOW (texasru);
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150 }
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151
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152 extern __inline long
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153 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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154 __TM_nesting_depth (void* const TM_buff)
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155 {
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156 texasrl_t texasrl;
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157
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158 if (_HTM_STATE (__builtin_ttest ()) == _HTM_NONTRANSACTIONAL)
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159 {
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160 texasrl = *_TEXASRL_PTR (TM_buff);
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161 if (!_TEXASR_FAILURE_SUMMARY (texasrl))
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162 texasrl = 0;
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163 }
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164 else
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165 texasrl = (texasrl_t) __builtin_get_texasr ();
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166
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167 return _TEXASR_TRANSACTION_LEVEL (texasrl);
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168 }
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169
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170 extern __inline long
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171 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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172 __TM_is_nested_too_deep(void* const TM_buff)
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173 {
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174 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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175 return _TEXASRU_NESTING_OVERFLOW (texasru);
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176 }
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177
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178 extern __inline long
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179 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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180 __TM_is_conflict(void* const TM_buff)
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181 {
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182 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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183 /* Return TEXASR bits 11 (Self-Induced Conflict) through
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184 14 (Translation Invalidation Conflict). */
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185 return (_TEXASRU_EXTRACT_BITS (texasru, 14, 4)) ? 1 : 0;
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186 }
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187
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188 extern __inline long
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189 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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190 __TM_is_failure_persistent(void* const TM_buff)
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191 {
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192 texasru_t texasru = *_TEXASRU_PTR (TM_buff);
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193 return _TEXASRU_FAILURE_PERSISTENT (texasru);
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194 }
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195
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196 extern __inline long
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197 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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198 __TM_failure_address(void* const TM_buff)
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199 {
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200 return *_TFIAR_PTR (TM_buff);
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201 }
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202
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203 extern __inline long long
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204 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
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205 __TM_failure_code(void* const TM_buff)
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206 {
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207 return *_TEXASR_PTR (TM_buff);
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208 }
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209
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210 #ifdef __cplusplus
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211 }
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212 #endif
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213
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214 #endif /* _HTMXLINTRIN_H */
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