PM0214 datasheet(163/245 Pages) STMICROELECTRONICS

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PM0214

The STM32 Cortex-M4 instruction set

244

3.10.20

VMSR

Move to floating-point System Register from ARM Core register.

Syntax

VMSR{cond} FPSCR, Rt

where:

•

‘cond’ is an optional condition code, see Conditional execution on page 64.

•

‘Rt’ is the general-purpose register to be transferred to the FPSCR.

Operation

This instruction moves the value of a general-purpose register to the FPSCR. See Floating-

point status control register (FPSCR) on page 239 for more information.

Restrictions

The restrictions are Rt cannot be PC or SP.

Condition flags

This instruction updates the FPSCR.

3.10.21

VMUL

Floating-point Multiply.

Syntax

VMUL{cond}.F32 {Sd,} Sn, Sm

where:

•

‘cond’ is an optional condition code, see Conditional execution on page 64.

•

‘Sd’ is the destination floating-point value

•

‘Sn, Sm’ are the operand floating-point values.

Operation

This instruction:

Multiplies two floating-point values.

Places the results in the destination register.

Restrictions

There are no restrictions.

Condition flags

These instructions do not change the flags.

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