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comparison src/cpu/x86/vm/vm_version_x86.cpp @ 4749:7ab5f6318694

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7125934: Add a fast unordered timestamp capability to Hotspot on x86/x64 Summary: Add rdtsc detection and inline generation. Reviewed-by: kamg, dholmes Contributed-by: karen.kinnear@oracle.com
author phh
date Sun, 01 Jan 2012 11:17:59 -0500
parents f08d439fab8c
children 22cee0ee8927
comparison
equal deleted inserted replaced
4732:4ec93d767458 4749:7ab5f6318694
48 int VM_Version::_cpuFeatures; 48 int VM_Version::_cpuFeatures;
49 const char* VM_Version::_features_str = ""; 49 const char* VM_Version::_features_str = "";
50 VM_Version::CpuidInfo VM_Version::_cpuid_info = { 0, }; 50 VM_Version::CpuidInfo VM_Version::_cpuid_info = { 0, };
51 51
52 static BufferBlob* stub_blob; 52 static BufferBlob* stub_blob;
53 static const int stub_size = 400; 53 static const int stub_size = 500;
54 54
55 extern "C" { 55 extern "C" {
56 typedef void (*getPsrInfo_stub_t)(void*); 56 typedef void (*getPsrInfo_stub_t)(void*);
57 } 57 }
58 static getPsrInfo_stub_t getPsrInfo_stub = NULL; 58 static getPsrInfo_stub_t getPsrInfo_stub = NULL;
71 const int CPU_FAMILY_SHIFT = 8; 71 const int CPU_FAMILY_SHIFT = 8;
72 const uint32_t CPU_FAMILY_386 = (3 << CPU_FAMILY_SHIFT); 72 const uint32_t CPU_FAMILY_386 = (3 << CPU_FAMILY_SHIFT);
73 const uint32_t CPU_FAMILY_486 = (4 << CPU_FAMILY_SHIFT); 73 const uint32_t CPU_FAMILY_486 = (4 << CPU_FAMILY_SHIFT);
74 74
75 Label detect_486, cpu486, detect_586, std_cpuid1, std_cpuid4; 75 Label detect_486, cpu486, detect_586, std_cpuid1, std_cpuid4;
76 Label ext_cpuid1, ext_cpuid5, done; 76 Label ext_cpuid1, ext_cpuid5, ext_cpuid7, done;
77 77
78 StubCodeMark mark(this, "VM_Version", "getPsrInfo_stub"); 78 StubCodeMark mark(this, "VM_Version", "getPsrInfo_stub");
79 # define __ _masm-> 79 # define __ _masm->
80 80
81 address start = __ pc(); 81 address start = __ pc();
233 __ cpuid(); 233 __ cpuid();
234 __ cmpl(rax, 0x80000000); // Is cpuid(0x80000001) supported? 234 __ cmpl(rax, 0x80000000); // Is cpuid(0x80000001) supported?
235 __ jcc(Assembler::belowEqual, done); 235 __ jcc(Assembler::belowEqual, done);
236 __ cmpl(rax, 0x80000004); // Is cpuid(0x80000005) supported? 236 __ cmpl(rax, 0x80000004); // Is cpuid(0x80000005) supported?
237 __ jccb(Assembler::belowEqual, ext_cpuid1); 237 __ jccb(Assembler::belowEqual, ext_cpuid1);
238 __ cmpl(rax, 0x80000006); // Is cpuid(0x80000007) supported?
239 __ jccb(Assembler::belowEqual, ext_cpuid5);
238 __ cmpl(rax, 0x80000007); // Is cpuid(0x80000008) supported? 240 __ cmpl(rax, 0x80000007); // Is cpuid(0x80000008) supported?
239 __ jccb(Assembler::belowEqual, ext_cpuid5); 241 __ jccb(Assembler::belowEqual, ext_cpuid7);
240 // 242 //
241 // Extended cpuid(0x80000008) 243 // Extended cpuid(0x80000008)
242 // 244 //
243 __ movl(rax, 0x80000008); 245 __ movl(rax, 0x80000008);
244 __ cpuid(); 246 __ cpuid();
245 __ lea(rsi, Address(rbp, in_bytes(VM_Version::ext_cpuid8_offset()))); 247 __ lea(rsi, Address(rbp, in_bytes(VM_Version::ext_cpuid8_offset())));
248 __ movl(Address(rsi, 0), rax);
249 __ movl(Address(rsi, 4), rbx);
250 __ movl(Address(rsi, 8), rcx);
251 __ movl(Address(rsi,12), rdx);
252
253 //
254 // Extended cpuid(0x80000007)
255 //
256 __ bind(ext_cpuid7);
257 __ movl(rax, 0x80000007);
258 __ cpuid();
259 __ lea(rsi, Address(rbp, in_bytes(VM_Version::ext_cpuid7_offset())));
246 __ movl(Address(rsi, 0), rax); 260 __ movl(Address(rsi, 0), rax);
247 __ movl(Address(rsi, 4), rbx); 261 __ movl(Address(rsi, 4), rbx);
248 __ movl(Address(rsi, 8), rcx); 262 __ movl(Address(rsi, 8), rcx);
249 __ movl(Address(rsi,12), rdx); 263 __ movl(Address(rsi,12), rdx);
250 264
363 // HT processor could be installed on a system which doesn't support HT. 377 // HT processor could be installed on a system which doesn't support HT.
364 _cpuFeatures &= ~CPU_HT; 378 _cpuFeatures &= ~CPU_HT;
365 } 379 }
366 380
367 char buf[256]; 381 char buf[256];
368 jio_snprintf(buf, sizeof(buf), "(%u cores per cpu, %u threads per core) family %d model %d stepping %d%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", 382 jio_snprintf(buf, sizeof(buf), "(%u cores per cpu, %u threads per core) family %d model %d stepping %d%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
369 cores_per_cpu(), threads_per_core(), 383 cores_per_cpu(), threads_per_core(),
370 cpu_family(), _model, _stepping, 384 cpu_family(), _model, _stepping,
371 (supports_cmov() ? ", cmov" : ""), 385 (supports_cmov() ? ", cmov" : ""),
372 (supports_cmpxchg8() ? ", cx8" : ""), 386 (supports_cmpxchg8() ? ", cx8" : ""),
373 (supports_fxsr() ? ", fxsr" : ""), 387 (supports_fxsr() ? ", fxsr" : ""),
381 (supports_popcnt() ? ", popcnt" : ""), 395 (supports_popcnt() ? ", popcnt" : ""),
382 (supports_mmx_ext() ? ", mmxext" : ""), 396 (supports_mmx_ext() ? ", mmxext" : ""),
383 (supports_3dnow_prefetch() ? ", 3dnowpref" : ""), 397 (supports_3dnow_prefetch() ? ", 3dnowpref" : ""),
384 (supports_lzcnt() ? ", lzcnt": ""), 398 (supports_lzcnt() ? ", lzcnt": ""),
385 (supports_sse4a() ? ", sse4a": ""), 399 (supports_sse4a() ? ", sse4a": ""),
386 (supports_ht() ? ", ht": "")); 400 (supports_ht() ? ", ht": ""),
401 (supports_tsc() ? ", tsc": ""),
402 (supports_tscinv_bit() ? ", tscinvbit": ""),
403 (supports_tscinv() ? ", tscinv": ""));
387 _features_str = strdup(buf); 404 _features_str = strdup(buf);
388 405
389 // UseSSE is set to the smaller of what hardware supports and what 406 // UseSSE is set to the smaller of what hardware supports and what
390 // the command line requires. I.e., you cannot set UseSSE to 2 on 407 // the command line requires. I.e., you cannot set UseSSE to 2 on
391 // older Pentiums which do not support it. 408 // older Pentiums which do not support it.