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VMRS (floating-point)

Transfer contents from an floating-point system register to an ARM register.

Syntax

VMRS{cond} Rd, extsysreg

where:

cond
is an optional condition code.
extsysreg
is the floating-point system register, usually FPSCR, FPSID, or FPEXC.
Rd

is the ARM register. Rd must not be PC.

It can be APSR_nzcv, if extsysreg is FPSCR. In this case, the floating-point status flags are transferred into the corresponding flags in the ARM APSR.

Usage

The VMRS instruction transfers the contents of extsysreg into Rd.

Note

The instruction stalls the processor until all current floating-point operations complete.

Examples

    VMRS    r2,FPCID
    VMRS    APSR_nzcv, FPSCR     ; transfer FP status register to ARM APSR

Related reference

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