IsProcessorFeaturePresent (Windows Embedded CE 6.0)
1/6/2010
This function retrieves information about supported features in a system.
Syntax
BOOL IsProcessorFeaturePresent(
DWORD dwProcessorFeature
);
Parameters
dwProcessorFeature
[in] Specifies the flag for the feature that you want to verify support for.The following table shows the flags for ARM processor features.
Flag Description PF_ARM_CACHE_CAN_BE_LOCKED_DOWN
Cache can be locked down.
PF_ARM_DSP
E DSP instructions. This flag is deprecated, but no additional flag is required because this is covered by ARMv5 and later.
PF_ARM_DTCM
Tightly coupled data memory.
PF_ARM_INTEL_PMU
Performance Monitor Unit (PMU).
PF_ARM_INTEL_WMMX
WMMX support.
PF_ARM_INTEL_XSCALE
Intel XScale processor. This can be used to determine if the processor supports operations where
src==dest.PF_ARM_ITCM
Tightly coupled data memory.
PF_ARM_JAZELLE
ARM Jazelle technology.
PF_ARM_L2CACHE
Level 2 cache controller. This flag is deprecated. For the correct flags to use, see the other L2 cache flags.
PF_ARM_L2CACHE_COPROC
Level 2 cache controller implemented as a coprocessor.
PF_ARM_L2CACHE_MEMORY_MAPPED
Level 2 cache controller implemented as a memory-mapped peripheral.
PF_ARM_MBX
ARM MBX technology.
PF_ARM_MOVE_CP
ARM MOVE coprocessor.
PF_ARM_MPU
Support for memory protection unit (MPU) is available.
PF_ARM_NEON
NEON instruction set.
PF_ARM_PHYSICALLY_TAGGED_CACHE
Cache is, or can be, physically tagged.
PF_ARM_T2EE
T2EE instruction set.
PF_ARM_THUMB
Thumb instruction set.
PF_ARM_THUMB2
Thumb2 instruction set.
PF_ARM_UNALIGNED_ACCESS
Can support unaligned access. You need to call a KLIB_IOCTL to turn this on.
PF_ARM_UNIFIED_CACHE
Unified cache.
PF_ARM_V4
ARM architecture v4.
PF_ARM_V5
ARM architecture v5.
PF_ARM_V6
ARM architecture v6.
PF_ARM_V7
ARM architecture v7.
PF_ARM_VFP_DOUBLE_PRECISION
Double precision vectored floating-point unit.
PF_ARM_VFP_SINGLE_PRECISION
Single precision vectored floating-point unit.
PF_ARM_VFP10
VFP10 floating-point unit (FPU) This flag is obsolete. For the correct flags to use, see the other VFP flags.
PF_ARM_VFP3
VFP3 instruction set.
PF_ARM_WRITE_BUFFER
Writeback buffer.
PF_ARM_WRITE_BACK_CACHE
Writeback cache.
The following table shows the flags for MIPS processor features.
Flag Description PF_MIPS_ARCH_2
Architecture release 2
PF_MIPS_CPU_32FPR
32 double-precision FP registers
PF_MIPS_CPU_4KEX
R4K exception model
PF_MIPS_CPU_4KTLB
R4K translation look-aside buffer (TLB) handler
PF_MIPS_CPU_CACHE_CDEX
Create_Dirty_Exclusive cache operation
PF_MIPS_CPU_COUNTER
Cycle count or compare
PF_MIPS_CPU_DIVEC
Dedicated interrupt vector
PF_MIPS_CPU_EJTAG
EJTAG exception
PF_MIPS_CPU_MCHECK
Machine check exception
PF_MIPS_CPU_VCE
Virtual coherence conflict
PF_MIPS_CPU_WATCH
Watchpoint registers
PF_MIPS_FPU
FPU support
PF_MIPS_MIPS16
MIPS16 instruction set
PF_MIPS_MIPS32
MIPS32 instruction set
PF_MIPS_MIPS64
MIPS64 instruction set
PF_MIPS_MIPSII
MIPSII instruction set
PF_MIPS_MIPSIII
MIPSIII instruction set
PF_MIPS_MIPSIV
MIPSIV instruction set
PF_MIPS_PERF_COUNTER
Performance counter
PF_MIPS_SMART_ASE
MIPS smart card architecture specific extension
The following table shows the flags for SHx processor features.
Flag Description PF_SHX_DSP
Digital signal processor (DSP)
PF_SHX_FPU
Floating-point unit
PF_SHX_SH3
SH3 instruction set
PF_SHX_SH4
SH4 instruction set
PF_SHX_SH5
SH5 instruction set
The following list shows the flags for x86 processor features:
- PF_3DNOW_INSTRUCTIONS_AVAILABLE
- PF_ALPHA_BYTE_INSTRUCTIONS
- PF_COMPARE_EXCHANGE_DOUBLE
- PF_FLOATING_POINT_EMULATED
- PF_FLOATING_POINT_PRECISION_ERRATA
- PF_MMX_INSTRUCTIONS_AVAILABLE
- PF_PAE_ENABLED
- PF_PPC_MOVEMEM_64BIT_OK
- PF_RDTSC_INSTRUCTION_AVAILABLE
- PF_XMMI_INSTRUCTIONS_AVAILABLE
- PF_XMMI64_INSTRUCTIONS_AVAILABLE
Note
All other PF_XXX flags return FALSE.
Return Value
Nonzero indicates that the processor feature is supported. FALSE indicates that the processor feature is not supported.
Remarks
The PF_XXX flags in dwProcessorFeature are filtered based on the CPU type. Only the PF_XXX flags corresponding to the CPU being compiled are present.
Requirements
| Header | winbase.h |
| Library | OEMMain.lib or OEMMain_StaticKITL.lib |
| Windows Embedded CE | Windows CE .NET 4.1 and later |