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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include "cpu.h" | 28 #include "cpu.h" |
29 | 29 |
30 #if V8_CC_MSVC | 30 #if V8_LIBC_MSVCRT |
31 #include <intrin.h> // __cpuid() | 31 #include <intrin.h> // __cpuid() |
32 #endif | 32 #endif |
33 #if V8_OS_POSIX | 33 #if V8_OS_POSIX |
34 #include <unistd.h> // sysconf() | 34 #include <unistd.h> // sysconf() |
35 #endif | 35 #endif |
36 #if V8_OS_QNX | 36 #if V8_OS_QNX |
37 #include <sys/syspage.h> // cpuinfo | 37 #include <sys/syspage.h> // cpuinfo |
38 #endif | 38 #endif |
39 | 39 |
40 #include <ctype.h> | 40 #include <ctype.h> |
41 #include <limits.h> | 41 #include <limits.h> |
42 #include <stdio.h> | 42 #include <stdio.h> |
43 #include <stdlib.h> | 43 #include <stdlib.h> |
44 #include <string.h> | 44 #include <string.h> |
45 #include <algorithm> | 45 #include <algorithm> |
46 | 46 |
47 #include "checks.h" | 47 #include "checks.h" |
48 #if V8_OS_WIN | 48 #if V8_OS_WIN |
49 #include "win32-headers.h" | 49 #include "win32-headers.h" |
50 #endif | 50 #endif |
51 | 51 |
52 namespace v8 { | 52 namespace v8 { |
53 namespace internal { | 53 namespace internal { |
54 | 54 |
55 #if V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64 | 55 #if V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64 |
56 | 56 |
57 // Define __cpuid() for non-MSVC compilers. | 57 // Define __cpuid() for non-MSVC libraries. |
58 #if !V8_CC_MSVC | 58 #if !V8_LIBC_MSVCRT |
59 | 59 |
60 static V8_INLINE void __cpuid(int cpu_info[4], int info_type) { | 60 static V8_INLINE void __cpuid(int cpu_info[4], int info_type) { |
61 #if defined(__i386__) && defined(__pic__) | 61 #if defined(__i386__) && defined(__pic__) |
62 // Make sure to preserve ebx, which contains the pointer | 62 // Make sure to preserve ebx, which contains the pointer |
63 // to the GOT in case we're generating PIC. | 63 // to the GOT in case we're generating PIC. |
64 __asm__ volatile ( | 64 __asm__ volatile ( |
65 "mov %%ebx, %%edi\n\t" | 65 "mov %%ebx, %%edi\n\t" |
66 "cpuid\n\t" | 66 "cpuid\n\t" |
67 "xchg %%edi, %%ebx\n\t" | 67 "xchg %%edi, %%ebx\n\t" |
68 : "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3]) | 68 : "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3]) |
69 : "a"(info_type) | 69 : "a"(info_type) |
70 ); | 70 ); |
71 #else | 71 #else |
72 __asm__ volatile ( | 72 __asm__ volatile ( |
73 "cpuid \n\t" | 73 "cpuid \n\t" |
74 : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3]) | 74 : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3]) |
75 : "a"(info_type) | 75 : "a"(info_type) |
76 ); | 76 ); |
77 #endif // defined(__i386__) && defined(__pic__) | 77 #endif // defined(__i386__) && defined(__pic__) |
78 } | 78 } |
79 | 79 |
80 #endif // !V8_CC_MSVC | 80 #endif // !V8_LIBC_MSVCRT |
81 | 81 |
82 #elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS | 82 #elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS |
83 | 83 |
84 #if V8_OS_LINUX | 84 #if V8_OS_LINUX |
85 | 85 |
86 #if V8_HOST_ARCH_ARM | 86 #if V8_HOST_ARCH_ARM |
87 | 87 |
88 // See <uapi/asm/hwcap.h> kernel header. | 88 // See <uapi/asm/hwcap.h> kernel header. |
89 /* | 89 /* |
90 * HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP | 90 * HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP |
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496 #if V8_OS_WIN | 496 #if V8_OS_WIN |
497 SYSTEM_INFO info; | 497 SYSTEM_INFO info; |
498 GetSystemInfo(&info); | 498 GetSystemInfo(&info); |
499 return info.dwNumberOfProcessors; | 499 return info.dwNumberOfProcessors; |
500 #else | 500 #else |
501 return static_cast<int>(sysconf(_SC_NPROCESSORS_ONLN)); | 501 return static_cast<int>(sysconf(_SC_NPROCESSORS_ONLN)); |
502 #endif | 502 #endif |
503 } | 503 } |
504 | 504 |
505 } } // namespace v8::internal | 505 } } // namespace v8::internal |
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