diff options
Diffstat (limited to 'lib/soundtouch/cpu_detect_x86.cpp')
| -rw-r--r-- | lib/soundtouch/cpu_detect_x86.cpp | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/lib/soundtouch/cpu_detect_x86.cpp b/lib/soundtouch/cpu_detect_x86.cpp deleted file mode 100644 index b1286106eb..0000000000 --- a/lib/soundtouch/cpu_detect_x86.cpp +++ /dev/null @@ -1,130 +0,0 @@ -////////////////////////////////////////////////////////////////////////////////
-///
-/// Generic version of the x86 CPU extension detection routine.
-///
-/// This file is for GNU & other non-Windows compilers, see 'cpu_detect_x86_win.cpp'
-/// for the Microsoft compiler version.
-///
-/// Author : Copyright (c) Olli Parviainen
-/// Author e-mail : oparviai 'at' iki.fi
-/// SoundTouch WWW: http://www.surina.net/soundtouch
-///
-////////////////////////////////////////////////////////////////////////////////
-//
-// License :
-//
-// SoundTouch audio processing library
-// Copyright (c) Olli Parviainen
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License, or (at your option) any later version.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-////////////////////////////////////////////////////////////////////////////////
-
-#include "cpu_detect.h"
-#include "STTypes.h"
-
-
-#if defined(SOUNDTOUCH_ALLOW_X86_OPTIMIZATIONS)
-
- #if defined(__GNUC__) && defined(__i386__)
- // gcc
- #include "cpuid.h"
- #elif defined(_M_IX86)
- // windows non-gcc
- #include <intrin.h>
- #endif
-
- #define bit_MMX (1 << 23)
- #define bit_SSE (1 << 25)
- #define bit_SSE2 (1 << 26)
-#endif
-
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// processor instructions extension detection routines
-//
-//////////////////////////////////////////////////////////////////////////////
-
-// Flag variable indicating whick ISA extensions are disabled (for debugging)
-static uint _dwDisabledISA = 0x00; // 0xffffffff; //<- use this to disable all extensions
-
-// Disables given set of instruction extensions. See SUPPORT_... defines.
-void disableExtensions(uint dwDisableMask)
-{
- _dwDisabledISA = dwDisableMask;
-}
-
-
-/// Checks which instruction set extensions are supported by the CPU.
-uint detectCPUextensions(void)
-{
-/// If building for a 64bit system (no Itanium) and the user wants optimizations.
-/// Return the OR of SUPPORT_{MMX,SSE,SSE2}. 11001 or 0x19.
-/// Keep the _dwDisabledISA test (2 more operations, could be eliminated).
-#if ((defined(__GNUC__) && defined(__x86_64__)) \
- || defined(_M_X64)) \
- && defined(SOUNDTOUCH_ALLOW_X86_OPTIMIZATIONS)
- return 0x19 & ~_dwDisabledISA;
-
-/// If building for a 32bit system and the user wants optimizations.
-/// Keep the _dwDisabledISA test (2 more operations, could be eliminated).
-#elif ((defined(__GNUC__) && defined(__i386__)) \
- || defined(_M_IX86)) \
- && defined(SOUNDTOUCH_ALLOW_X86_OPTIMIZATIONS)
-
- if (_dwDisabledISA == 0xffffffff) return 0;
-
- uint res = 0;
-
-#if defined(__GNUC__)
- // GCC version of cpuid. Requires GCC 4.3.0 or later for __cpuid intrinsic support.
- uint eax, ebx, ecx, edx; // unsigned int is the standard type. uint is defined by the compiler and not guaranteed to be portable.
-
- // Check if no cpuid support.
- if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx)) return 0; // always disable extensions.
-
- if (edx & bit_MMX) res = res | SUPPORT_MMX;
- if (edx & bit_SSE) res = res | SUPPORT_SSE;
- if (edx & bit_SSE2) res = res | SUPPORT_SSE2;
-
-#else
- // Window / VS version of cpuid. Notice that Visual Studio 2005 or later required
- // for __cpuid intrinsic support.
- int reg[4] = {-1};
-
- // Check if no cpuid support.
- __cpuid(reg,0);
- if ((unsigned int)reg[0] == 0) return 0; // always disable extensions.
-
- __cpuid(reg,1);
- if ((unsigned int)reg[3] & bit_MMX) res = res | SUPPORT_MMX;
- if ((unsigned int)reg[3] & bit_SSE) res = res | SUPPORT_SSE;
- if ((unsigned int)reg[3] & bit_SSE2) res = res | SUPPORT_SSE2;
-
-#endif
-
- return res & ~_dwDisabledISA;
-
-#else
-
-/// One of these is true:
-/// 1) We don't want optimizations.
-/// 2) Using an unsupported compiler.
-/// 3) Running on a non-x86 platform.
- return 0;
-
-#endif
-}
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