x86 Instruction Set Reference

HSUBPD

Packed Double-FP Horizontal Subtract

Opcode Mnemonic Description
66 0F 7D /r HSUBPD xmm1, xmm2/m128 Subtract horizontally packed DP FP numbers in xmm2/m128 from xmm1.
Description

The HSUBPD instruction subtracts horizontally the packed DP FP numbers of both operands.

Subtracts the double-precision floating-point value in the high quadword of the destination operand from the low quadword of the destination operand and stores the result in the low quadword of the destination operand.

Subtracts the double-precision floating-point value in the high quadword of the source operand from the low quadword of the source operand and stores the result in the high quadword of the destination operand.
Operation 
xmm1[0..63] = xmm1[0..63] - xmm1[64..127];
xmm1[64..127] = xmm2/m128[0..63] - xmm2/m128[64..127];
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.
#NMIf TS bit in CR0 is set.
#XMFor 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.
#NMIf TS bit in CR0 is set.
#XMFor 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.
#NMIf TS bit in CR0 is set.
#XMFor an unmasked Streaming SIMD Extensions numeric exception (CR4.OSXMMEXCPT = 1).
#UDIf 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
CPUID0F3n0F3n0F3n
HSUBPD134FP_ADD FP_MISC