Intel 64 and IA-32 Architectures Software Developers Manual Volume 2B, Instruction Set Reference, N-Z

Vol. 2B 4-369
INSTRUCTION SET REFERENCE, N-Z
• Stack segment — Computed by adding 24 to the value in IA32_SYSENTER_CS.
• Stack pointer — Update ESP from 32-bit address in ECX.
Flags Affected
None.
Protected Mode Exceptions
#GP(0) If IA32_SYSENTER_CS[15:2] = 0.
If CPL ≠ 0.
Real-Address Mode Exceptions
#GP(0) If protected mode is not enabled.
Virtual-8086 Mode Exceptions
#GP(0) Always
Compatibility Mode Exceptions
Same exceptions as in Protected Mode.
64-Bit Mode Exceptions
#GP(0) If IA32_SYSENTER_CS = 0.
If CPL
≠ 0.
If ECX or EDX contains a non-canonical address.