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/ADT/SmallVector.h"
15 #include "llvm/ADT/StringRef.h"
16 #include "llvm/ADT/StringSwitch.h"
17 #include "llvm/Support/DataStream.h"
18 #include "llvm/Support/Debug.h"
19 #include "llvm/Support/Host.h"
20 #include "llvm/Support/raw_ostream.h"
21 #include "llvm/Config/config.h"
24 // Include the platform-specific parts of this class.
26 #include "Unix/Host.inc"
29 #include "Windows/Host.inc"
34 #if defined(__APPLE__) && (defined(__ppc__) || defined(__powerpc__))
35 #include <mach/mach.h>
36 #include <mach/mach_host.h>
37 #include <mach/host_info.h>
38 #include <mach/machine.h>
41 //===----------------------------------------------------------------------===//
43 // Implementations of the CPU detection routines
45 //===----------------------------------------------------------------------===//
49 #if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)\
50 || defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64)
52 /// GetX86CpuIDAndInfo - Execute the specified cpuid and return the 4 values in the
53 /// specified arguments. If we can't run cpuid on the host, return true.
54 static bool GetX86CpuIDAndInfo(unsigned value, unsigned *rEAX,
55 unsigned *rEBX, unsigned *rECX, unsigned *rEDX) {
56 #if defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64)
58 // gcc doesn't know cpuid would clobber ebx/rbx. Preseve it manually.
59 asm ("movq\t%%rbx, %%rsi\n\t"
61 "xchgq\t%%rbx, %%rsi\n\t"
68 #elif defined(_MSC_VER)
70 __cpuid(registers, value);
79 #elif defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
81 asm ("movl\t%%ebx, %%esi\n\t"
83 "xchgl\t%%ebx, %%esi\n\t"
90 #elif defined(_MSC_VER)
95 mov dword ptr [esi],eax
97 mov dword ptr [esi],ebx
99 mov dword ptr [esi],ecx
101 mov dword ptr [esi],edx
104 // pedantic #else returns to appease -Wunreachable-code (so we don't generate
105 // postprocessed code that looks like "return true; return false;")
114 static void DetectX86FamilyModel(unsigned EAX, unsigned &Family,
116 Family = (EAX >> 8) & 0xf; // Bits 8 - 11
117 Model = (EAX >> 4) & 0xf; // Bits 4 - 7
118 if (Family == 6 || Family == 0xf) {
120 // Examine extended family ID if family ID is F.
121 Family += (EAX >> 20) & 0xff; // Bits 20 - 27
122 // Examine extended model ID if family ID is 6 or F.
123 Model += ((EAX >> 16) & 0xf) << 4; // Bits 16 - 19
127 std::string sys::getHostCPUName() {
128 unsigned EAX = 0, EBX = 0, ECX = 0, EDX = 0;
129 if (GetX86CpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX))
133 DetectX86FamilyModel(EAX, Family, Model);
135 bool HasSSE3 = (ECX & 0x1);
136 GetX86CpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
137 bool Em64T = (EDX >> 29) & 0x1;
144 GetX86CpuIDAndInfo(0, &EAX, text.u+0, text.u+2, text.u+1);
145 if (memcmp(text.c, "GenuineIntel", 12) == 0) {
151 case 0: // Intel486 DX processors
152 case 1: // Intel486 DX processors
153 case 2: // Intel486 SX processors
154 case 3: // Intel487 processors, IntelDX2 OverDrive processors,
155 // IntelDX2 processors
156 case 4: // Intel486 SL processor
157 case 5: // IntelSX2 processors
158 case 7: // Write-Back Enhanced IntelDX2 processors
159 case 8: // IntelDX4 OverDrive processors, IntelDX4 processors
160 default: return "i486";
164 case 1: // Pentium OverDrive processor for Pentium processor (60, 66),
165 // Pentium processors (60, 66)
166 case 2: // Pentium OverDrive processor for Pentium processor (75, 90,
167 // 100, 120, 133), Pentium processors (75, 90, 100, 120, 133,
169 case 3: // Pentium OverDrive processors for Intel486 processor-based
173 case 4: // Pentium OverDrive processor with MMX technology for Pentium
174 // processor (75, 90, 100, 120, 133), Pentium processor with
175 // MMX technology (166, 200)
176 return "pentium-mmx";
178 default: return "pentium";
182 case 1: // Pentium Pro processor
185 case 3: // Intel Pentium II OverDrive processor, Pentium II processor,
187 case 5: // Pentium II processor, model 05, Pentium II Xeon processor,
188 // model 05, and Intel Celeron processor, model 05
189 case 6: // Celeron processor, model 06
192 case 7: // Pentium III processor, model 07, and Pentium III Xeon
193 // processor, model 07
194 case 8: // Pentium III processor, model 08, Pentium III Xeon processor,
195 // model 08, and Celeron processor, model 08
196 case 10: // Pentium III Xeon processor, model 0Ah
197 case 11: // Pentium III processor, model 0Bh
200 case 9: // Intel Pentium M processor, Intel Celeron M processor model 09.
201 case 13: // Intel Pentium M processor, Intel Celeron M processor, model
202 // 0Dh. All processors are manufactured using the 90 nm process.
205 case 14: // Intel Core Duo processor, Intel Core Solo processor, model
206 // 0Eh. All processors are manufactured using the 65 nm process.
209 case 15: // Intel Core 2 Duo processor, Intel Core 2 Duo mobile
210 // processor, Intel Core 2 Quad processor, Intel Core 2 Quad
211 // mobile processor, Intel Core 2 Extreme processor, Intel
212 // Pentium Dual-Core processor, Intel Xeon processor, model
213 // 0Fh. All processors are manufactured using the 65 nm process.
214 case 22: // Intel Celeron processor model 16h. All processors are
215 // manufactured using the 65 nm process
218 case 21: // Intel EP80579 Integrated Processor and Intel EP80579
219 // Integrated Processor with Intel QuickAssist Technology
220 return "i686"; // FIXME: ???
222 case 23: // Intel Core 2 Extreme processor, Intel Xeon processor, model
223 // 17h. All processors are manufactured using the 45 nm process.
225 // 45nm: Penryn , Wolfdale, Yorkfield (XE)
228 case 26: // Intel Core i7 processor and Intel Xeon processor. All
229 // processors are manufactured using the 45 nm process.
230 case 29: // Intel Xeon processor MP. All processors are manufactured using
231 // the 45 nm process.
232 case 30: // Intel(R) Core(TM) i7 CPU 870 @ 2.93GHz.
233 // As found in a Summer 2010 model iMac.
234 case 37: // Intel Core i7, laptop version.
235 case 44: // Intel Core i7 processor and Intel Xeon processor. All
236 // processors are manufactured using the 32 nm process.
240 case 42: // Intel Core i7 processor. All processors are manufactured
241 // using the 32 nm process.
249 case 28: // Most 45 nm Intel Atom processors
250 case 38: // 45 nm Atom Lincroft
251 case 39: // 32 nm Atom Medfield
254 default: return (Em64T) ? "x86-64" : "i686";
258 case 0: // Pentium 4 processor, Intel Xeon processor. All processors are
259 // model 00h and manufactured using the 0.18 micron process.
260 case 1: // Pentium 4 processor, Intel Xeon processor, Intel Xeon
261 // processor MP, and Intel Celeron processor. All processors are
262 // model 01h and manufactured using the 0.18 micron process.
263 case 2: // Pentium 4 processor, Mobile Intel Pentium 4 processor - M,
264 // Intel Xeon processor, Intel Xeon processor MP, Intel Celeron
265 // processor, and Mobile Intel Celeron processor. All processors
266 // are model 02h and manufactured using the 0.13 micron process.
267 return (Em64T) ? "x86-64" : "pentium4";
269 case 3: // Pentium 4 processor, Intel Xeon processor, Intel Celeron D
270 // processor. All processors are model 03h and manufactured using
271 // the 90 nm process.
272 case 4: // Pentium 4 processor, Pentium 4 processor Extreme Edition,
273 // Pentium D processor, Intel Xeon processor, Intel Xeon
274 // processor MP, Intel Celeron D processor. All processors are
275 // model 04h and manufactured using the 90 nm process.
276 case 6: // Pentium 4 processor, Pentium D processor, Pentium processor
277 // Extreme Edition, Intel Xeon processor, Intel Xeon processor
278 // MP, Intel Celeron D processor. All processors are model 06h
279 // and manufactured using the 65 nm process.
280 return (Em64T) ? "nocona" : "prescott";
283 return (Em64T) ? "x86-64" : "pentium4";
290 } else if (memcmp(text.c, "AuthenticAMD", 12) == 0) {
291 // FIXME: this poorly matches the generated SubtargetFeatureKV table. There
292 // appears to be no way to generate the wide variety of AMD-specific targets
293 // from the information returned from CPUID.
301 case 8: return "k6-2";
303 case 13: return "k6-3";
304 default: return "pentium";
308 case 4: return "athlon-tbird";
311 case 8: return "athlon-mp";
312 case 10: return "athlon-xp";
313 default: return "athlon";
319 case 1: return "opteron";
320 case 5: return "athlon-fx"; // also opteron
321 default: return "athlon64";
335 #elif defined(__APPLE__) && (defined(__ppc__) || defined(__powerpc__))
336 std::string sys::getHostCPUName() {
337 host_basic_info_data_t hostInfo;
338 mach_msg_type_number_t infoCount;
340 infoCount = HOST_BASIC_INFO_COUNT;
341 host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo,
344 if (hostInfo.cpu_type != CPU_TYPE_POWERPC) return "generic";
346 switch(hostInfo.cpu_subtype) {
347 case CPU_SUBTYPE_POWERPC_601: return "601";
348 case CPU_SUBTYPE_POWERPC_602: return "602";
349 case CPU_SUBTYPE_POWERPC_603: return "603";
350 case CPU_SUBTYPE_POWERPC_603e: return "603e";
351 case CPU_SUBTYPE_POWERPC_603ev: return "603ev";
352 case CPU_SUBTYPE_POWERPC_604: return "604";
353 case CPU_SUBTYPE_POWERPC_604e: return "604e";
354 case CPU_SUBTYPE_POWERPC_620: return "620";
355 case CPU_SUBTYPE_POWERPC_750: return "750";
356 case CPU_SUBTYPE_POWERPC_7400: return "7400";
357 case CPU_SUBTYPE_POWERPC_7450: return "7450";
358 case CPU_SUBTYPE_POWERPC_970: return "970";
364 #elif defined(__linux__) && (defined(__ppc__) || defined(__powerpc__))
365 std::string sys::getHostCPUName() {
366 // Access to the Processor Version Register (PVR) on PowerPC is privileged,
367 // and so we must use an operating-system interface to determine the current
368 // processor type. On Linux, this is exposed through the /proc/cpuinfo file.
369 const char *generic = "generic";
371 // Note: We cannot mmap /proc/cpuinfo here and then process the resulting
372 // memory buffer because the 'file' has 0 size (it can be read from only
376 DataStreamer *DS = getDataFileStreamer("/proc/cpuinfo", &Err);
378 DEBUG(dbgs() << "Unable to open /proc/cpuinfo: " << Err << "\n");
382 // The cpu line is second (after the 'processor: 0' line), so if this
383 // buffer is too small then something has changed (or is wrong).
385 size_t CPUInfoSize = DS->GetBytes((unsigned char*) buffer, sizeof(buffer));
388 const char *CPUInfoStart = buffer;
389 const char *CPUInfoEnd = buffer + CPUInfoSize;
391 const char *CIP = CPUInfoStart;
393 const char *CPUStart = 0;
396 // We need to find the first line which starts with cpu, spaces, and a colon.
397 // After the colon, there may be some additional spaces and then the cpu type.
398 while (CIP < CPUInfoEnd && CPUStart == 0) {
399 if (CIP < CPUInfoEnd && *CIP == '\n')
402 if (CIP < CPUInfoEnd && *CIP == 'c') {
404 if (CIP < CPUInfoEnd && *CIP == 'p') {
406 if (CIP < CPUInfoEnd && *CIP == 'u') {
408 while (CIP < CPUInfoEnd && (*CIP == ' ' || *CIP == '\t'))
411 if (CIP < CPUInfoEnd && *CIP == ':') {
413 while (CIP < CPUInfoEnd && (*CIP == ' ' || *CIP == '\t'))
416 if (CIP < CPUInfoEnd) {
418 while (CIP < CPUInfoEnd && (*CIP != ' ' && *CIP != '\t' &&
419 *CIP != ',' && *CIP != '\n'))
421 CPULen = CIP - CPUStart;
429 while (CIP < CPUInfoEnd && *CIP != '\n')
436 return StringSwitch<const char *>(StringRef(CPUStart, CPULen))
437 .Case("604e", "604e")
439 .Case("7400", "7400")
440 .Case("7410", "7400")
441 .Case("7447", "7400")
442 .Case("7455", "7450")
444 .Case("POWER4", "970")
445 .Case("PPC970FX", "970")
446 .Case("PPC970MP", "970")
448 .Case("POWER5", "g5")
450 .Case("POWER6", "pwr6")
451 .Case("POWER7", "pwr7")
454 #elif defined(__linux__) && defined(__arm__)
455 std::string sys::getHostCPUName() {
456 // The cpuid register on arm is not accessible from user space. On Linux,
457 // it is exposed through the /proc/cpuinfo file.
458 // Note: We cannot mmap /proc/cpuinfo here and then process the resulting
459 // memory buffer because the 'file' has 0 size (it can be read from only
463 DataStreamer *DS = getDataFileStreamer("/proc/cpuinfo", &Err);
465 DEBUG(dbgs() << "Unable to open /proc/cpuinfo: " << Err << "\n");
469 // Read 1024 bytes from /proc/cpuinfo, which should contain the CPU part line
472 size_t CPUInfoSize = DS->GetBytes((unsigned char*) buffer, sizeof(buffer));
475 StringRef Str(buffer, CPUInfoSize);
477 SmallVector<StringRef, 32> Lines;
478 Str.split(Lines, "\n");
480 // Look for the CPU implementer line.
481 StringRef Implementer;
482 for (unsigned I = 0, E = Lines.size(); I != E; ++I)
483 if (Lines[I].startswith("CPU implementer"))
484 Implementer = Lines[I].substr(15).ltrim("\t :");
486 if (Implementer == "0x41") // ARM Ltd.
487 // Look for the CPU part line.
488 for (unsigned I = 0, E = Lines.size(); I != E; ++I)
489 if (Lines[I].startswith("CPU part"))
490 // The CPU part is a 3 digit hexadecimal number with a 0x prefix. The
491 // values correspond to the "Part number" in the CP15/c0 register. The
492 // contents are specified in the various processor manuals.
493 return StringSwitch<const char *>(Lines[I].substr(8).ltrim("\t :"))
494 .Case("0x926", "arm926ej-s")
495 .Case("0xb02", "mpcore")
496 .Case("0xb36", "arm1136j-s")
497 .Case("0xb56", "arm1156t2-s")
498 .Case("0xb76", "arm1176jz-s")
499 .Case("0xc08", "cortex-a8")
500 .Case("0xc09", "cortex-a9")
501 .Case("0xc20", "cortex-m0")
502 .Case("0xc23", "cortex-m3")
503 .Case("0xc24", "cortex-m4")
509 std::string sys::getHostCPUName() {
514 bool sys::getHostCPUFeatures(StringMap<bool> &Features){