diff options
Diffstat (limited to 'drivers/opus/celt/arm/armcpu.c')
| -rw-r--r-- | drivers/opus/celt/arm/armcpu.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/drivers/opus/celt/arm/armcpu.c b/drivers/opus/celt/arm/armcpu.c deleted file mode 100644 index ac8ad2ec14..0000000000 --- a/drivers/opus/celt/arm/armcpu.c +++ /dev/null @@ -1,171 +0,0 @@ -/* Copyright (c) 2010 Xiph.Org Foundation - * Copyright (c) 2013 Parrot */ -/* - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER - OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -/* Original code from libtheora modified to suit to Opus */ -#include "opus/opus_config.h" - -#ifdef OPUS_HAVE_RTCD - -#include "opus/celt/arm/armcpu.h" -#include "opus/celt/cpu_support.h" -#include "opus/celt/os_support.h" -#include "opus/opus_types.h" - -#define OPUS_CPU_ARM_V4 (1) -#define OPUS_CPU_ARM_EDSP (1<<1) -#define OPUS_CPU_ARM_MEDIA (1<<2) -#define OPUS_CPU_ARM_NEON (1<<3) - -#if defined(_MSC_VER) -/*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/ -# define WIN32_LEAN_AND_MEAN -# define WIN32_EXTRA_LEAN -# include <windows.h> - -static OPUS_INLINE opus_uint32 opus_cpu_capabilities(void){ - opus_uint32 flags; - flags=0; - /* MSVC has no OPUS_INLINE __asm support for ARM, but it does let you __emit - * instructions via their assembled hex code. - * All of these instructions should be essentially nops. */ -# if defined(OPUS_ARM_MAY_HAVE_EDSP) - __try{ - /*PLD [r13]*/ - __emit(0xF5DDF000); - flags|=OPUS_CPU_ARM_EDSP; - } - __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){ - /*Ignore exception.*/ - } -# if defined(OPUS_ARM_MAY_HAVE_MEDIA) - __try{ - /*SHADD8 r3,r3,r3*/ - __emit(0xE6333F93); - flags|=OPUS_CPU_ARM_MEDIA; - } - __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){ - /*Ignore exception.*/ - } -# if defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR) - __try{ - /*VORR q0,q0,q0*/ - __emit(0xF2200150); - flags|=OPUS_CPU_ARM_NEON; - } - __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){ - /*Ignore exception.*/ - } -# endif -# endif -# endif - return flags; -} - -#elif defined(__linux__) -/* Linux based */ -opus_uint32 opus_cpu_capabilities(void) -{ - opus_uint32 flags = 0; - FILE *cpuinfo; - - /* Reading /proc/self/auxv would be easier, but that doesn't work reliably on - * Android */ - cpuinfo = fopen("/proc/cpuinfo", "r"); - - if(cpuinfo != NULL) - { - /* 512 should be enough for anybody (it's even enough for all the flags that - * x86 has accumulated... so far). */ - char buf[512]; - - while(fgets(buf, 512, cpuinfo) != NULL) - { -# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR) - /* Search for edsp and neon flag */ - if(memcmp(buf, "Features", 8) == 0) - { - char *p; -# if defined(OPUS_ARM_MAY_HAVE_EDSP) - p = strstr(buf, " edsp"); - if(p != NULL && (p[5] == ' ' || p[5] == '\n')) - flags |= OPUS_CPU_ARM_EDSP; -# endif - -# if defined(OPUS_ARM_MAY_HAVE_NEON) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR) - p = strstr(buf, " neon"); - if(p != NULL && (p[5] == ' ' || p[5] == '\n')) - flags |= OPUS_CPU_ARM_NEON; -# endif - } -# endif - -# if defined(OPUS_ARM_MAY_HAVE_MEDIA) - /* Search for media capabilities (>= ARMv6) */ - if(memcmp(buf, "CPU architecture:", 17) == 0) - { - int version; - version = atoi(buf+17); - - if(version >= 6) - flags |= OPUS_CPU_ARM_MEDIA; - } -# endif - } - - fclose(cpuinfo); - } - return flags; -} -#else -/* The feature registers which can tell us what the processor supports are - * accessible in priveleged modes only, so we can't have a general user-space - * detection method like on x86.*/ -# error "Configured to use ARM asm but no CPU detection method available for " \ - "your platform. Reconfigure with --disable-rtcd (or send patches)." -#endif - -int opus_select_arch(void) -{ - opus_uint32 flags = opus_cpu_capabilities(); - int arch = 0; - - if(!(flags & OPUS_CPU_ARM_EDSP)) - return arch; - arch++; - - if(!(flags & OPUS_CPU_ARM_MEDIA)) - return arch; - arch++; - - if(!(flags & OPUS_CPU_ARM_NEON)) - return arch; - arch++; - - return arch; -} - -#endif |