1 //===-- Host.cpp - Implement OS Host Concept --------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This header file implements the operating system Host concept.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Support/Host.h"
15 #include "llvm/Config/config.h"
18 // Include the platform-specific parts of this class.
20 #include "Unix/Host.inc"
23 #include "Windows/Host.inc"
29 //===----------------------------------------------------------------------===//
31 // Implementations of the CPU detection routines
33 //===----------------------------------------------------------------------===//
37 #if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)\
38 || defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64)
40 /// GetX86CpuIDAndInfo - Execute the specified cpuid and return the 4 values in the
41 /// specified arguments. If we can't run cpuid on the host, return true.
42 static bool GetX86CpuIDAndInfo(unsigned value, unsigned *rEAX,
43 unsigned *rEBX, unsigned *rECX, unsigned *rEDX) {
44 #if defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64)
46 // gcc doesn't know cpuid would clobber ebx/rbx. Preseve it manually.
47 asm ("movq\t%%rbx, %%rsi\n\t"
49 "xchgq\t%%rbx, %%rsi\n\t"
56 #elif defined(_MSC_VER)
58 __cpuid(registers, value);
67 #elif defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
69 asm ("movl\t%%ebx, %%esi\n\t"
71 "xchgl\t%%ebx, %%esi\n\t"
78 #elif defined(_MSC_VER)
83 mov dword ptr [esi],eax
85 mov dword ptr [esi],ebx
87 mov dword ptr [esi],ecx
89 mov dword ptr [esi],edx
92 // pedantic #else returns to appease -Wunreachable-code (so we don't generate
93 // postprocessed code that looks like "return true; return false;")
102 static void DetectX86FamilyModel(unsigned EAX, unsigned &Family,
104 Family = (EAX >> 8) & 0xf; // Bits 8 - 11
105 Model = (EAX >> 4) & 0xf; // Bits 4 - 7
106 if (Family == 6 || Family == 0xf) {
108 // Examine extended family ID if family ID is F.
109 Family += (EAX >> 20) & 0xff; // Bits 20 - 27
110 // Examine extended model ID if family ID is 6 or F.
111 Model += ((EAX >> 16) & 0xf) << 4; // Bits 16 - 19
115 std::string sys::getHostCPUName() {
116 unsigned EAX = 0, EBX = 0, ECX = 0, EDX = 0;
117 if (GetX86CpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX))
121 DetectX86FamilyModel(EAX, Family, Model);
123 bool HasSSE3 = (ECX & 0x1);
124 GetX86CpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
125 bool Em64T = (EDX >> 29) & 0x1;
132 GetX86CpuIDAndInfo(0, &EAX, text.u+0, text.u+2, text.u+1);
133 if (memcmp(text.c, "GenuineIntel", 12) == 0) {
139 case 0: // Intel486 DX processors
140 case 1: // Intel486 DX processors
141 case 2: // Intel486 SX processors
142 case 3: // Intel487 processors, IntelDX2 OverDrive processors,
143 // IntelDX2 processors
144 case 4: // Intel486 SL processor
145 case 5: // IntelSX2 processors
146 case 7: // Write-Back Enhanced IntelDX2 processors
147 case 8: // IntelDX4 OverDrive processors, IntelDX4 processors
148 default: return "i486";
152 case 1: // Pentium OverDrive processor for Pentium processor (60, 66),
153 // Pentium processors (60, 66)
154 case 2: // Pentium OverDrive processor for Pentium processor (75, 90,
155 // 100, 120, 133), Pentium processors (75, 90, 100, 120, 133,
157 case 3: // Pentium OverDrive processors for Intel486 processor-based
161 case 4: // Pentium OverDrive processor with MMX technology for Pentium
162 // processor (75, 90, 100, 120, 133), Pentium processor with
163 // MMX technology (166, 200)
164 return "pentium-mmx";
166 default: return "pentium";
170 case 1: // Pentium Pro processor
173 case 3: // Intel Pentium II OverDrive processor, Pentium II processor,
175 case 5: // Pentium II processor, model 05, Pentium II Xeon processor,
176 // model 05, and Intel Celeron processor, model 05
177 case 6: // Celeron processor, model 06
180 case 7: // Pentium III processor, model 07, and Pentium III Xeon
181 // processor, model 07
182 case 8: // Pentium III processor, model 08, Pentium III Xeon processor,
183 // model 08, and Celeron processor, model 08
184 case 10: // Pentium III Xeon processor, model 0Ah
185 case 11: // Pentium III processor, model 0Bh
188 case 9: // Intel Pentium M processor, Intel Celeron M processor model 09.
189 case 13: // Intel Pentium M processor, Intel Celeron M processor, model
190 // 0Dh. All processors are manufactured using the 90 nm process.
193 case 14: // Intel Core Duo processor, Intel Core Solo processor, model
194 // 0Eh. All processors are manufactured using the 65 nm process.
197 case 15: // Intel Core 2 Duo processor, Intel Core 2 Duo mobile
198 // processor, Intel Core 2 Quad processor, Intel Core 2 Quad
199 // mobile processor, Intel Core 2 Extreme processor, Intel
200 // Pentium Dual-Core processor, Intel Xeon processor, model
201 // 0Fh. All processors are manufactured using the 65 nm process.
202 case 22: // Intel Celeron processor model 16h. All processors are
203 // manufactured using the 65 nm process
206 case 21: // Intel EP80579 Integrated Processor and Intel EP80579
207 // Integrated Processor with Intel QuickAssist Technology
208 return "i686"; // FIXME: ???
210 case 23: // Intel Core 2 Extreme processor, Intel Xeon processor, model
211 // 17h. All processors are manufactured using the 45 nm process.
213 // 45nm: Penryn , Wolfdale, Yorkfield (XE)
216 case 26: // Intel Core i7 processor and Intel Xeon processor. All
217 // processors are manufactured using the 45 nm process.
218 case 29: // Intel Xeon processor MP. All processors are manufactured using
219 // the 45 nm process.
220 case 30: // Intel(R) Core(TM) i7 CPU 870 @ 2.93GHz.
221 // As found in a Summer 2010 model iMac.
222 case 37: // Intel Core i7, laptop version.
223 case 44: // Intel Core i7 processor and Intel Xeon processor. All
224 // processors are manufactured using the 32 nm process.
228 case 42: // Intel Core i7 processor. All processors are manufactured
229 // using the 32 nm process.
237 case 28: // Most 45 nm Intel Atom processors
238 case 38: // 45 nm Atom Lincroft
239 case 39: // 32 nm Atom Medfield
242 default: return (Em64T) ? "x86-64" : "i686";
246 case 0: // Pentium 4 processor, Intel Xeon processor. All processors are
247 // model 00h and manufactured using the 0.18 micron process.
248 case 1: // Pentium 4 processor, Intel Xeon processor, Intel Xeon
249 // processor MP, and Intel Celeron processor. All processors are
250 // model 01h and manufactured using the 0.18 micron process.
251 case 2: // Pentium 4 processor, Mobile Intel Pentium 4 processor - M,
252 // Intel Xeon processor, Intel Xeon processor MP, Intel Celeron
253 // processor, and Mobile Intel Celeron processor. All processors
254 // are model 02h and manufactured using the 0.13 micron process.
255 return (Em64T) ? "x86-64" : "pentium4";
257 case 3: // Pentium 4 processor, Intel Xeon processor, Intel Celeron D
258 // processor. All processors are model 03h and manufactured using
259 // the 90 nm process.
260 case 4: // Pentium 4 processor, Pentium 4 processor Extreme Edition,
261 // Pentium D processor, Intel Xeon processor, Intel Xeon
262 // processor MP, Intel Celeron D processor. All processors are
263 // model 04h and manufactured using the 90 nm process.
264 case 6: // Pentium 4 processor, Pentium D processor, Pentium processor
265 // Extreme Edition, Intel Xeon processor, Intel Xeon processor
266 // MP, Intel Celeron D processor. All processors are model 06h
267 // and manufactured using the 65 nm process.
268 return (Em64T) ? "nocona" : "prescott";
271 return (Em64T) ? "x86-64" : "pentium4";
278 } else if (memcmp(text.c, "AuthenticAMD", 12) == 0) {
279 // FIXME: this poorly matches the generated SubtargetFeatureKV table. There
280 // appears to be no way to generate the wide variety of AMD-specific targets
281 // from the information returned from CPUID.
289 case 8: return "k6-2";
291 case 13: return "k6-3";
292 default: return "pentium";
296 case 4: return "athlon-tbird";
299 case 8: return "athlon-mp";
300 case 10: return "athlon-xp";
301 default: return "athlon";
307 case 1: return "opteron";
308 case 5: return "athlon-fx"; // also opteron
309 default: return "athlon64";
324 std::string sys::getHostCPUName() {
329 bool sys::getHostCPUFeatures(StringMap<bool> &Features){