PM0214 datasheet(57/245 Pages) STMICROELECTRONICS

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PM0214

The STM32 Cortex-M4 instruction set

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3.2

CMSIS intrinsic functions

ISO/IEC C code cannot directly access some Cortex-M4 instructions. This section describes

intrinsic functions that can generate these instructions, provided by the CMIS and that might

be provided by a C compiler. If a C compiler does not support an appropriate intrinsic

function, you might have to use an inline assembler to access some instructions.

The CMSIS provides the intrinsic functions listed in Table 22 to generate instructions that

ANSI cannot directly access.

VMOV

Dd[x], Rt

Copy ARM core register to

scalar

—

3.10.15 on page

159

VMOV

Rt, Dn[x]

Copy scalar to ARM core

—

3.10.16 on page

160

VMRS

Rt, FPSCR

Move FPSCR to ARM core

N,Z,C,V

3.10.19 on page

162

VMSR

FPSCR, Rt

Move to FPSCR from ARM

Core register

FPSCR

3.10.20 on page

163

VMUL.F32

{Sd,} Sn, Sm

Floating-point multiply

—

3.10.21 on page

163

VNEG.F32

Sd, Sm

Floating-point negate

—

3.10.22 on page

164

VNMLA.F32 Sd, Sn, Sm

Floating-point multiply and

add

—

3.10.23 on page

165

VNMLS.F32 Sd, Sn, Sm

Floating-point multiply and

subtract

—

3.10.23 on page

165

VNMUL

{Sd,} Sn, Sm

Floating-point multiply

—

3.10.23 on page

165

VPOP

list

Pop extension registers

—

3.10.24 on page

166

VPUSH

list

Push extension registers

—

3.10.25 on page

166

VSQRT.F32

Sd, Sm

Calculates floating-point

square root

—

3.10.26 on page

167

VSTM

Rn{!}, list

Floating-point register store

multiple

—

3.10.27 on page

167

WFE

—

Wait for event

—

3.11.11 on page 176

WFI

—

Wait for interrupt

—

3.11.12 on page

177

Table 21. Cortex-M4 instructions (continued)

Mnemonic

Operands

Brief description

Flags

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