x86 Instruction Set Reference

# MOVMSKPS

# Extract Packed Single-Precision Floating-Point Sign Mask

Opcode Mnemonic Description
0F 50 /r MOVMSKPS r32, xmm Extract 4-bit sign mask of from xmm and store in r32.

# Description

Extracts the sign bits from the packed single-precision floating-point values in the source operand (second operand), formats them into a 4-bit mask, and stores the mask in the destination operand (first operand). The source operand is an XMM register, and the destination operand is a general-purpose register. The mask is stored in the 4 low-order bits of the destination operand.

# Operation

Destination[0] = Source[31];
Destination[1] = Source[63];
Destination[2] = Source[95];
Destination[3] = Source[127];
Destination[4..31] = 0;
1
2
3
4
5
6

# SIMD Floating-Point Exceptions

None.

# Protected Mode Exceptions
#NM If TS in CR0 is set.
#NM If TS in CR0 is set.

# Real-Address Mode Exceptions

Same exceptions as in Protected Mode

# Virtual-8086 Mode Exceptions

Same exceptions as in Protected Mode.

Instruction Latency Throughput Execution Unit
CPUID 0F3n/0F2n 0F3n/0F2n 0F2n
MOVMSKPS r32, xmm 6/6 2/2 FP_MISC

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