Intel 64 and IA-32 Architectures Software Developers Manual Volume 2A, Instruction Set Reference, A-M

3-264 Vol. 2
INSTRUCTION SET REFERENCE, A-M
FI;
ELSE IF 64-Bit Mode and Operandsize = 64 (* Doublequadword/quadword operation *)
THEN
temp ← RDX:RAX / SRC;
IF temp > FFFFFFFFFFFFFFFFH
THEN #DE; (* Divide error *)
ELSE
RAX ← temp;
RDX ← RDX:RAX MOD SRC;
FI;
FI;
FI;
Flags Affected
The CF, OF, SF, ZF, AF, and PF flags are undefined.
Protected Mode Exceptions
#DE If the source operand (divisor) is 0
If the quotient is too large for the designated register.
#GP(0) If a memory operand effective address is outside the CS, DS,
ES, FS, or GS segment limit.
If the DS, ES, FS, or GS register contains a NULL segment
selector.
#SS(0) If a memory operand effective address is outside the SS
segment limit.
#PF(fault-code) If a page fault occurs.
#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
#DE If the source operand (divisor) is 0.
If the quotient is too large for the designated register.
#GP If a memory operand effective address is outside the CS, DS,
ES, FS, or GS segment limit.
If the DS, ES, FS, or GS register contains a NULL segment
selector.
#SS(0) If a memory operand effective address is outside the SS
segment limit.