Mercurial > hg > truffle
annotate src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp @ 12436:39308acea2f7
revert Unsafe.getObject hack to read uncompressed pointers
author | twisti |
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date | Tue, 15 Oct 2013 18:04:13 -0700 |
parents | b9a9ed0f8eeb |
children | 00f5eff62d18 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "runtime/os.hpp" | |
27 #include "vm_version_sparc.hpp" | |
0 | 28 |
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29 # include <sys/auxv.h> |
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30 # include <sys/auxv_SPARC.h> |
0 | 31 # include <sys/systeminfo.h> |
2080 | 32 # include <kstat.h> |
0 | 33 |
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34 // We need to keep these here as long as we have to build on Solaris |
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35 // versions before 10. |
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36 #ifndef SI_ARCHITECTURE_32 |
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37 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */ |
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38 #endif |
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39 |
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40 #ifndef SI_ARCHITECTURE_64 |
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41 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */ |
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42 #endif |
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43 |
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44 static void do_sysinfo(int si, const char* string, int* features, int mask) { |
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45 char tmp; |
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46 size_t bufsize = sysinfo(si, &tmp, 1); |
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47 |
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48 // All SI defines used below must be supported. |
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49 guarantee(bufsize != -1, "must be supported"); |
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50 |
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51 char* buf = (char*) malloc(bufsize); |
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52 |
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53 if (buf == NULL) |
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54 return; |
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55 |
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56 if (sysinfo(si, buf, bufsize) == bufsize) { |
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57 // Compare the string. |
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58 if (strcmp(buf, string) == 0) { |
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59 *features |= mask; |
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60 } |
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61 } |
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62 |
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63 free(buf); |
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64 } |
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65 |
0 | 66 int VM_Version::platform_features(int features) { |
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67 // getisax(2), SI_ARCHITECTURE_32, and SI_ARCHITECTURE_64 are |
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68 // supported on Solaris 10 and later. |
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69 if (os::Solaris::supports_getisax()) { |
0 | 70 |
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71 // Check 32-bit architecture. |
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72 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m); |
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73 |
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74 // Check 64-bit architecture. |
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75 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m); |
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76 |
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77 // Extract valid instruction set extensions. |
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78 uint_t av; |
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79 uint_t avn = os::Solaris::getisax(&av, 1); |
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80 assert(avn == 1, "should only return one av"); |
0 | 81 |
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82 #ifndef PRODUCT |
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83 if (PrintMiscellaneous && Verbose) |
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84 tty->print_cr("getisax(2) returned: " PTR32_FORMAT, av); |
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85 #endif |
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86 |
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87 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m; |
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88 if (av & AV_SPARC_DIV32) features |= hardware_div32_m; |
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89 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m; |
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90 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m; |
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91 if (av & AV_SPARC_POPC) features |= hardware_popc_m; |
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92 if (av & AV_SPARC_VIS) features |= vis1_instructions_m; |
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93 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m; |
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94 |
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95 // Next values are not defined before Solaris 10 |
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96 // but Solaris 8 is used for jdk6 update builds. |
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97 #ifndef AV_SPARC_ASI_BLK_INIT |
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98 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */ |
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99 #endif |
2080 | 100 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m; |
101 | |
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102 #ifndef AV_SPARC_FMAF |
2080 | 103 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */ |
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104 #endif |
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105 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m; |
2080 | 106 |
107 #ifndef AV_SPARC_FMAU | |
108 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */ | |
109 #endif | |
110 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m; | |
111 | |
112 #ifndef AV_SPARC_VIS3 | |
113 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */ | |
114 #endif | |
115 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m; | |
116 | |
3839 | 117 #ifndef AV_SPARC_CBCOND |
118 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */ | |
119 #endif | |
120 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m; | |
121 | |
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122 } else { |
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123 // getisax(2) failed, use the old legacy code. |
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124 #ifndef PRODUCT |
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125 if (PrintMiscellaneous && Verbose) |
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126 tty->print_cr("getisax(2) is not supported."); |
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127 #endif |
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128 |
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129 char tmp; |
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130 size_t bufsize = sysinfo(SI_ISALIST, &tmp, 1); |
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131 char* buf = (char*) malloc(bufsize); |
0 | 132 |
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133 if (buf != NULL) { |
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134 if (sysinfo(SI_ISALIST, buf, bufsize) == bufsize) { |
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135 // Figure out what kind of sparc we have |
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136 char *sparc_string = strstr(buf, "sparc"); |
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137 if (sparc_string != NULL) { features |= v8_instructions_m; |
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138 if (sparc_string[5] == 'v') { |
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139 if (sparc_string[6] == '8') { |
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140 if (sparc_string[7] == '-') { features |= hardware_mul32_m; |
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141 features |= hardware_div32_m; |
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142 } else if (sparc_string[7] == 'p') features |= generic_v9_m; |
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143 else features |= generic_v8_m; |
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144 } else if (sparc_string[6] == '9') features |= generic_v9_m; |
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145 } |
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146 } |
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147 |
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148 // Check for visualization instructions |
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149 char *vis = strstr(buf, "vis"); |
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150 if (vis != NULL) { features |= vis1_instructions_m; |
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151 if (vis[3] == '2') features |= vis2_instructions_m; |
0 | 152 } |
153 } | |
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154 free(buf); |
0 | 155 } |
156 } | |
157 | |
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158 // Determine the machine type. |
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159 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m); |
0 | 160 |
2080 | 161 { |
162 // Using kstat to determine the machine type. | |
163 kstat_ctl_t* kc = kstat_open(); | |
164 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL); | |
165 const char* implementation = "UNKNOWN"; | |
166 if (ksp != NULL) { | |
167 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) { | |
168 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data; | |
169 for (int i = 0; i < ksp->ks_ndata; i++) { | |
170 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) { | |
171 #ifndef KSTAT_DATA_STRING | |
172 #define KSTAT_DATA_STRING 9 | |
173 #endif | |
174 if (knm[i].data_type == KSTAT_DATA_CHAR) { | |
175 // VM is running on Solaris 8 which does not have value.str. | |
176 implementation = &(knm[i].value.c[0]); | |
177 } else if (knm[i].data_type == KSTAT_DATA_STRING) { | |
178 // VM is running on Solaris 10. | |
179 #ifndef KSTAT_NAMED_STR_PTR | |
180 // Solaris 8 was used to build VM, define the structure it misses. | |
181 struct str_t { | |
182 union { | |
183 char *ptr; /* NULL-term string */ | |
184 char __pad[8]; /* 64-bit padding */ | |
185 } addr; | |
186 uint32_t len; /* # bytes for strlen + '\0' */ | |
187 }; | |
188 #define KSTAT_NAMED_STR_PTR(knptr) (( (str_t*)&((knptr)->value) )->addr.ptr) | |
189 #endif | |
190 implementation = KSTAT_NAMED_STR_PTR(&knm[i]); | |
191 } | |
192 #ifndef PRODUCT | |
193 if (PrintMiscellaneous && Verbose) { | |
194 tty->print_cr("cpu_info.implementation: %s", implementation); | |
195 } | |
196 #endif | |
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197 // Convert to UPPER case before compare. |
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198 char* impl = strdup(implementation); |
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199 |
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200 for (int i = 0; impl[i] != 0; i++) |
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201 impl[i] = (char)toupper((uint)impl[i]); |
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202 if (strstr(impl, "SPARC64") != NULL) { |
2080 | 203 features |= sparc64_family_m; |
6269 | 204 } else if (strstr(impl, "SPARC-M") != NULL) { |
205 // M-series SPARC is based on T-series. | |
206 features |= (M_family_m | T_family_m); | |
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207 } else if (strstr(impl, "SPARC-T") != NULL) { |
2080 | 208 features |= T_family_m; |
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209 if (strstr(impl, "SPARC-T1") != NULL) { |
2080 | 210 features |= T1_model_m; |
211 } | |
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212 } else { |
6269 | 213 if (strstr(impl, "SPARC") == NULL) { |
214 #ifndef PRODUCT | |
215 // kstat on Solaris 8 virtual machines (branded zones) | |
216 // returns "(unsupported)" implementation. | |
217 warning("kstat cpu_info implementation = '%s', should contain SPARC", impl); | |
218 #endif | |
219 implementation = "SPARC"; | |
220 } | |
2080 | 221 } |
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222 free((void*)impl); |
2080 | 223 break; |
224 } | |
225 } // for( | |
226 } | |
227 } | |
228 assert(strcmp(implementation, "UNKNOWN") != 0, | |
229 "unknown cpu info (changed kstat interface?)"); | |
230 kstat_close(kc); | |
231 } | |
232 | |
0 | 233 return features; |
234 } |