Intel 253666-024US - Manual (Page 574)

3-528 Vol. 2A LDMXCSR—Load MXCSR Register
INSTRUCTION SET REFERENCE, A-M
If CPUID.01H:EDX.SSE[bit 25] = 0.
If the LOCK prefix is used.
#AC(0) If alignment checking is enabled and an unaligned memory
reference is made while the current privilege level is 3.
Real Address Mode Exceptions
GP(0) If any part of the operand would lie outside of the effective
address space from 0 to FFFFH.
For an attempt to set reserved bits in MXCSR.
#NM If CR0.TS[bit 3] = 1.
#UD If CR0.EM[bit 2] = 1.
If CR4.OSFXSR[bit 9] = 0.
If CPUID.01H:EDX.SSE[bit 25] = 0.
If the LOCK prefix is used.
Virtual 8086 Mode Exceptions
Same exceptions as in real address mode.
#PF(fault-code)
For a page fault.
#AC(0) If alignment checking is enabled and an unaligned memory
reference is made.
If the LOCK prefix is used.
Compatibility Mode Exceptions
Same exceptions as in protected mode.
64-Bit Mode Exceptions
#SS(0) If a memory address referencing the SS segment is in a non-
canonical form.
#GP(0) If the memory address is in a non-canonical form.
For an attempt to set reserved bits in MXCSR.
#PF(fault-code) For a page fault.
#NM If CR0.TS[bit 3] = 1.
#UD If CR0.EM[bit 2] = 1.
If CR4.OSFXSR[bit 9] = 0.
If CPUID.01H:EDX.SSE[bit 25] = 0.
If the LOCK prefix is used.
#AC(0) If alignment checking is enabled and an unaligned memory
reference is made while the current privilege level is 3.