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Add support for Neon.

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This commit is contained in:
Jeff Hutchinson 2021-09-25 22:53:34 -04:00
parent 7cb306b65a
commit 960ea2aa5a
2 changed files with 16 additions and 4 deletions
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1
Engine/source/platform/platform.h
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@ -80,6 +80,7 @@ enum ProcessorProperties
CPU_PROP_MP = (1<<11), ///< This is a multi-processor system.
CPU_PROP_LE = (1<<12), ///< This processor is LITTLE ENDIAN.
CPU_PROP_64bit = (1<<13), ///< This processor is 64-bit capable
CPU_PROP_NEON = (1<<14), ///< Supports the Arm Neon instruction set extension.
};
/// Processor info manager.

19
Engine/source/platformMac/macCPU.mm
View file

@ -94,6 +94,11 @@ static void detectCpuFeatures(U32 &procflags)
int err;
U32 lraw;
// All Cpus have fpu
procflags = CPU_PROP_FPU;
#if defined(TORQUE_CPU_X86) || defined(TORQUE_CPU_X64)
// List of chip-specific features
err = _getSysCTLvalue<U32>("hw.optional.mmx", &lraw);
if ((err==0)&&(lraw==1))
@ -119,6 +124,12 @@ static void detectCpuFeatures(U32 &procflags)
err = _getSysCTLvalue<U32>("hw.optional.avx1_0", &lraw);
if ((err==0)&&(lraw==1))
procflags |= CPU_PROP_AVX;
#elif defined(TORQUE_CPU_ARM64)
// All Apple Cpus have Neon
procflags |= CPU_PROP_NEON;
#endif
err = _getSysCTLvalue<U32>("hw.ncpu", &lraw);
if ((err==0)&&(lraw>1))
@ -129,12 +140,11 @@ static void detectCpuFeatures(U32 &procflags)
err = _getSysCTLvalue<U32>("hw.byteorder", &lraw);
if ((err==0)&&(lraw==1234))
procflags |= CPU_PROP_LE;
}
void Processor::init()
{
U32 procflags;
U32 procflags = 0;
int err, cpufam, cputype, cpusub;
char buf[255];
U32 lraw;
@ -170,7 +180,6 @@ void Processor::init()
}
Platform::SystemInfo.processor.mhz = (unsigned int)llraw;
procflags = CPU_PROP_FPU;
detectCpuFeatures(procflags);
Platform::SystemInfo.processor.properties = procflags;
@ -197,7 +206,9 @@ void Processor::init()
Con::printf(" SSE4.2 detected");
if (Platform::SystemInfo.processor.properties & CPU_PROP_AVX)
Con::printf(" AVX detected");
if (Platform::SystemInfo.processor.properties & CPU_PROP_NEON)
Con::printf(" Neon detected");
Con::printf( "" );
// Trigger the signal