VFPSupport_Features 3 (changes)
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VFPSupport
» SWI Calls
» VFPSupport_Features
» VFPSupport Features 3
VFPSupport_Features 3 – Read extra system registers
(SWI &58EC8)
| Entry | |
|---|---|
| R0 | 3 (Reason code) |
| Exit | |
|---|---|
| R0 | MVFR2 register value |
| R1 | Reserved (zero) |
| R2 | Reserved (zero) |
| R3 | Reserved (zero) |
| All other registers preserved | |
Use
This call returns the value of the MVFR2 system register, which was introduced in ARMv8. Together with the registers returned by VFPSupport_Features 0, these registers describe which version of the VFP/NEON architecture is implemented and which optional features are supported.
Registers R1-R3 are reserved for returning additional registers which are introduced in future CPU architecture versions.
Notes
This call was introduced in VFPSupport 0.13.
See also
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