AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

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AMD64 Technology 26568—Rev. 3.05—September 2003 MULPD Multiply Packed Double-Precision Floating- Point Multiplies each of the two packed double-precision floating-point values in the first source operand by the corresponding packed double-precision floating-point value in the second source operand and writes the result of each multiplication operation in the corresponding quadword of the destination (first source). The first source/destination operand is an XMM register. The second source operand is another XMM register or 128-bit memory location. Mnemonic Opcode Description MULPD xmm1, xmm2/mem128 66 0F 59 /r Multiplies packed double-precision floating-point values in an XMM register and another XMM register or 128-bit memory location and writes the results in the destination XMM register. Related Instructions MULPS, MULSD, MULSS, PFMUL rFLAGS Affected None 127 64 63 0 127 64 63 0 multiply xmm1 xmm2/mem128 multiply 190 MULPD mulpd.eps
26568—Rev. 3.05—September 2003 AMD64 Technology MXCSR Flags Affected FZ RC PM UM OM ZM DM IM DAZ PE UE OE ZE DE IE Exceptions M M M M M 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: A flag that may be set to one or cleared to zero is M (modified). Unaffected flags are blank. Exception Real Invalid opcode, #UD X X X Virtual 8086 Protected Cause of Exception X X X X X X The SSE2 instructions are not supported, as indicated by bit 26 of CPUID standard function 1. The emulate bit (EM) of CR0 was set to 1. The operating-system FXSAVE/FXRSTOR support bit (OSFXSR) of CR4 was cleared to 0. X X X There was an unmasked SIMD floating-point exception while CR4.OSXMMEXCPT = 0. See SIMD Floating-Point Exceptions, below, for details. Device not available, #NM X X X The task-switch bit (TS) of CR0 was set to 1. Stack, #SS X X X A memory address exceeded the stack segment limit or was non-canonical. General protection, #GP X X X X A memory address exceeded a data segment limit or was non-canonical. A null data segment was used to reference memory. X X X The memory operand was not aligned on a 16-byte boundary. Page fault, #PF X X A page fault resulted from the execution of the instruction. SIMD Floating-Point Exception, #XF Invalid-operation exception (IE) X X X There was an unmasked SIMD floating-point exception while CR4.OSXMMEXCPT = 1. See SIMD Floating-Point Exceptions, below, for details. SIMD Floating-Point Exceptions X X X X X X A source operand was an SNaN value. ±Zero was multiplied by ±infinity. Overflow exception (OE) X X X A rounded result was too large to fit into the format of the destination operand. MULPD 191
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