Intel 253666-024US Manuel D’Utilisation

Page de 760
3-508 Vol. 2A
JMP—Jump
INSTRUCTION SET REFERENCE, A-M
JMP—Jump
Description
Transfers program control to a different point in the instruction stream without 
recording return information. The destination (target) operand specifies the address 
of the instruction being jumped to. This operand can be an immediate value, a 
general-purpose register, or a memory location.
This instruction can be used to execute four different types of jumps:
Near jump—A jump to an instruction within the current code segment (the 
segment currently pointed to by the CS register), sometimes referred to as an 
intrasegment jump.
Opcode
Instruction
64-Bit Mode Compat/
Leg Mode
Description
EB cb
JMP rel8
Valid
Valid
Jump short, RIP = RIP + 8-bit displacement 
sign extended to 64-bits
E9 cw
JMP rel16
N.S.
Valid
Jump near, relative, displacement relative 
to next instruction. Not supported in 64-bit 
mode.
E9 cd
JMP rel32
Valid
Valid
Jump near, relative, RIP = RIP + 32-bit 
displacement sign extended to 64-bits
FF /4
JMP r/m16
N.S.
Valid
Jump near, absolute indirect, address = 
sign-extended r/m16. Not supported in 64-
bit mode.
FF /4
JMP r/m32
N.S.
Valid
Jump near, absolute indirect, address = 
sign-extended r/m32. Not supported in 64-
bit mode.
FF /4
JMP r/m64
Valid
N.E.
Jump near, absolute indirect, RIP = 64-Bit 
offset from register or memory
EA cd
JMP ptr16:16 Inv.
Valid
Jump far, absolute, address given in 
operand
EA cp
JMP ptr16:32 Inv.
Valid
Jump far, absolute, address given in 
operand
FF /5
JMP m16:16 Valid
Valid
Jump far, absolute indirect, address given in 
m16:16
FF /5
JMP m16:32 Valid 
Valid
Jump far, absolute indirect, address given in 
m16:32.
REX.W + 
FF /5
JMP m16:64 Valid 
N.E.
Jump far, absolute indirect, address given in 
m16:64.