s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 130

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

INSTRUCTION SET
FORMAT 14: PUSH/POP REGISTERS
OPERATION
The instructions in this group allow registers 0-7 and optionally LR to be pushed onto the stack, and registers 0-7
and optionally PC to be popped off the stack. The THUMB assembler syntax is shown in Table 3-21.
3-88
0
0
1
1
L
B
0
1
0
1
15
1
PUSH { Rlist }
PUSH { Rlist, LR }
POP { Rlist }
POP { Rlist, PC }
Assembler
14
0
THUMB
13
1
12
1
The stack is always assumed to be full descending.
STMDB R13!, { Rlist }
STMDB R13!, { Rlist, R14} Push the Link Register and the registers specified
LDMIA R13!, { Rlist }
LDMIA R13!, {Rlist, R15}
11
L
Table 3-21. PUSH and POP Instructions
ARM Equivalent
10
1
[7:0] Register List
[8] PC/LR Bit
0 = Do not store LR/Load PC
1 = Store LR/Load PC
[11] Load/Store Bit
0 = Store to memory
1 = Load from memory
Figure 3-43. Format 14
9
0
R
8
NOTE
7
Push the registers specified by Rlist onto the stack.
Update the stack pointer.
by Rlist (if any) onto the stack. Update the stack
pointer.
Pop values off the stack into the registers specified
by Rlist. Update the stack pointer.
Pop values off the stack and load into the registers
specified by Rlist. Pop the PC off the stack.
Update the stack pointer.
Rlist
Action
0
S3C4510B