2.2.46 (2) PUSH (L)
PUSH (PUSH data)
Push Data on Stack
Operation
ERn
→
@–SP
Assembly-Language Format
PUSH.L
ERn
Operand Size
Longword
Condition Code
H: Previous value remains unchanged.
N: Set to 1 if the data value is negative;
otherwise cleared to 0.
Z: Set to 1 if the data value is zero; otherwise
cleared to 0.
V: Always cleared to 0.
C: Previous value remains unchanged.
I
UI
H
U
N
Z
V
C
—
—
—
—
↕
↕
0
—
Description
This instruction pushes data from a 32-bit register ERn onto the stack, tests the saved data, and
sets condition-code flags according to the result.
Available Registers
ERn: ER0 to ER7
Operand Format and Number of States Required for Execution
Notes
1.
PUSH.L ERn is identical to MOV.L ERn, @–SP.
2.
When PUSH.L ER7 is executed, the value saved on the stack is the value of ER7 before
execution minus four.
Instruction Format
1st byte
2nd byte
3rd byte
4th byte
—
PUSH.L
ERn
0
1
0
0
6
D
F
0 ern
10
No. of
States
Addressing
Mode
Mnemonic
Operands
146