QueryInstructionSet

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

This function queries to determine what instruction set is supported in the OS.

Syntax

BOOL QueryInstructionSet(
  DWORD dwInstructionSet,
  LPDWORD lpdwCurrentInstructionSet
);

Parameters

• dwInstructionSet
  [in] The instruction set that will be queried to determine if it is supported by the currently running OS. The following table shows possible values.

  Note

  Windows Mobile only supports processors based on the ARM architecture.

  Value	Description	Floating point hardware	Floating point emulation
  PROCESSOR_ARM_V4_INSTRUCTION	ARM V4 instruction set.	No	Yes
  PROCESSOR_ARM_V4FP_INSTRUCTION	ARM V4 instruction set.	Yes	No
  PROCESSOR_ARM_V4I_INSTRUCTION	ARM V4 with Thumb instruction set.	No	Yes
  PROCESSOR_ARM_V4IFP_INSTRUCTION	ARM V4 with Thumb instruction set.	Yes	No
  PROCESSOR_ARM_V4T_INSTRUCTION	ARM V4 with Thumb instruction set.	No	Yes
  PROCESSOR_ARM_V4TFP_INSTRUCTION	ARM V4 with Thumb instruction set.	Yes	No
  PROCESSOR_QUERY_INSTRUCTION	Request to have the current instruction set reported to the caller.	No	No

• lpdwCurrentInstructionSet
  [out] Returns the current instruction set supported by the OS.

Return Value

TRUE indicates that the instruction set passed in through dwInstructionSet is supported by the current OS or that dwInstructionSet is set to PROCESSOR_QUERY_INSTRUCTION. The lpdwCurrentInstructionSet parameter is then set to the current instruction set supported.

FALSE indicates that the instructions set is not supported or the dwInstructionSet value is unknown.

Remarks

This function can be used by any application that needs to determine if the code about to install or run will work on the current OS. The OS knows explicitly what instruction it will run, and therefore informs you if your installation should continue.

The following table shows the instruction set compatibility.

Requirements

See Also

Reference

System Management Functions