x86 Instruction Set Reference

# ADDSUBPS

# Packed Single-FP Add/Subtract

Opcode Mnemonic Description
F2 0F D0 /r ADDSUBPS xmm1, xmm2/m128 Add/Subtract packed SP FP numbers from xmm2/m128 to xmm1.

# Description

Adds odd-numbered single-precision floating-point values of the source operand (second operand) with the corresponding single-precision floating-point values from the destination operand (first operand); stores the result in the odd-numbered values of the destination operand.

Subtracts the even-numbered single-precision floating-point values in the source operand from the corresponding single-precision floating values in the destination operand; stores the result into the even-numbered values of the destination operand.

# Operation

xmm1[0..31] = xmm1[0..31] - xmm2/m128[0..31];
xmm1[32..63] = xmm1[32..63] + xmm2/m128[32..63];
xmm1[64..95] = xmm1[64..95] - xmm2/m128[64..95];
xmm1[96..127] = xmm1[96..127] + xmm2/m128[96..127];
1
2
3
4
5

# Exceptions

When the source operand is a memory operand, the operand must be aligned on a 16-byte boundary or a general-protection exception (#GP) will be generated.

# Numeric Exceptions

Overflow, Underflow, Invalid, Precision, Denormal.

# Protected Mode Exceptions
#GP(0) For an illegal memory operand effective address in the CS, DS, ES, FS or GS segments. If a memory operand is not aligned on a 16-byte boundary, regardless of segment.
#GP(0) For an illegal memory operand effective address in the CS, DS, ES, FS or GS segments. If a memory operand is not aligned on a 16-byte boundary, regardless of segment.
#SS(0) For an illegal address in the SS segment.
#PF(fault-code) For a page fault.
#NM If TS bit in CR0 is set.
#XM For an unmasked Streaming SIMD Extensions numeric exception (CR4.OSXMMEXCPT = 1).

# Real-Address Mode Exceptions
#GP(0) If any part of the operand would lie outside of the effective address space from 0 to 0FFFFH. If a memory operand is not aligned on a 16-byte boundary, regardless of segment.
#GP(0) If any part of the operand would lie outside of the effective address space from 0 to 0FFFFH. If a memory operand is not aligned on a 16-byte boundary, regardless of segment.
#NM If TS bit in CR0 is set.
#XM For an unmasked Streaming SIMD Extensions numeric exception (CR4.OSXMMEXCPT = 1).

# Virtual-8086 Mode Exceptions
#GP(0) If any part of the operand would lie outside of the effective address space from 0 to 0FFFFH. If a memory operand is not aligned on a 16-byte boundary, regardless of segment.
#GP(0) If any part of the operand would lie outside of the effective address space from 0 to 0FFFFH. If a memory operand is not aligned on a 16-byte boundary, regardless of segment.
#NM If TS bit in CR0 is set.
#XM For an unmasked Streaming SIMD Extensions numeric exception (CR4.OSXMMEXCPT = 1).
#UD If CR0.EM = 1. For an unmasked Streaming SIMD Extensions numeric exception (CR4.OSXMMEXCPT = 0). If CR4.OSFXSR(bit 9) = 0. If CPUID.SSE3(ECX bit 0) = 0.
Instruction Latency Throughput Execution Unit
CPUID 0F3n 0F3n 0F3n
ADDSUBPD 5 2 FP_ADD

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