AuroraMiddleware/v8
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[x86] Blacklist AVX for Windows versions before 6.1 (Windows 7).

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BUG=v8:3846
LOG=y

Review URL: https://codereview.chromium.org/869133002

Cr-Commit-Position: refs/heads/master@{#26239}
This commit is contained in:
bmeurer 2015-01-23 01:16:32 -08:00 committed by Commit bot
parent 35b88a352d
commit 65299cf463
2 changed files with 41 additions and 5 deletions
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22
src/ia32/assembler-ia32.cc
View File

@ -36,14 +36,19 @@
#include "src/ia32/assembler-ia32.h"
#include <cstring>
#if V8_TARGET_ARCH_IA32
#if V8_OS_MACOSX
#include <sys/sysctl.h>
#endif
#if V8_TARGET_ARCH_IA32
#include "src/base/bits.h"
#include "src/base/cpu.h"
#if V8_OS_WIN
#include "src/base/win32-headers.h"
#endif
#include "src/disassembler.h"
#include "src/macro-assembler.h"
#include "src/v8.h"
@ -73,6 +78,19 @@ bool EnableAVX() {
*period_pos = '\0';
long kernel_version_major = strtol(buffer, nullptr, 10); // NOLINT
if (kernel_version_major <= 13) return false;
#elif V8_OS_WIN
// The same problem seems to appear on Windows XP and Vista.
OSVERSIONINFOEX osvi;
DWORDLONG mask = 0;
memset(&osvi, 0, sizeof(osvi));
osvi.dwOSVersionInfoSize = sizeof(osvi);
osvi.dwMajorVersion = 6;
osvi.dwMinorVersion = 1;
VER_SET_CONDITION(mask, VER_MAJORVERSION, VER_GREATER_EQUAL);
VER_SET_CONDITION(mask, VER_MINORVERSION, VER_GREATER_EQUAL);
if (!VerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION, mask)) {
return false;
}
#endif // V8_OS_MACOSX
return FLAG_enable_avx;
}

24
src/x64/assembler-x64.cc
View File

@ -4,13 +4,18 @@
#include "src/x64/assembler-x64.h"
#include <cstring>
#if V8_TARGET_ARCH_X64
#if V8_OS_MACOSX
#include <sys/sysctl.h>
#endif
#if V8_TARGET_ARCH_X64
#include "src/base/bits.h"
#if V8_OS_WIN
#include "src/base/win32-headers.h"
#endif
#include "src/macro-assembler.h"
#include "src/v8.h"
@ -28,7 +33,7 @@ bool EnableAVX() {
// caused by ISRs, so we detect that here and disable AVX in that case.
char buffer[128];
size_t buffer_size = arraysize(buffer);
int ctl_name[] = { CTL_KERN , KERN_OSRELEASE };
int ctl_name[] = {CTL_KERN, KERN_OSRELEASE};
if (sysctl(ctl_name, 2, buffer, &buffer_size, nullptr, 0) != 0) {
V8_Fatal(__FILE__, __LINE__, "V8 failed to get kernel version");
}
@ -39,6 +44,19 @@ bool EnableAVX() {
*period_pos = '\0';
long kernel_version_major = strtol(buffer, nullptr, 10); // NOLINT
if (kernel_version_major <= 13) return false;
#elif V8_OS_WIN
// The same problem seems to appear on Windows XP and Vista.
OSVERSIONINFOEX osvi;
DWORDLONG mask = 0;
memset(&osvi, 0, sizeof(osvi));
osvi.dwOSVersionInfoSize = sizeof(osvi);
osvi.dwMajorVersion = 6;
osvi.dwMinorVersion = 1;
VER_SET_CONDITION(mask, VER_MAJORVERSION, VER_GREATER_EQUAL);
VER_SET_CONDITION(mask, VER_MINORVERSION, VER_GREATER_EQUAL);
if (!VerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION, mask)) {
return false;
}
#endif // V8_OS_MACOSX
return FLAG_enable_avx;
}