STM(1) - 多重儲存

備註

如果試圖進行無效的載入或儲存數據訪問，則產生數據終止異常。如果實現系統控制協處理器時啟用對齊檢查，並且存在位 [01:0] != 0b00 的地址，則產生對齊異常。

定址模式

請參閱“定址模式 4 - 多重載入與儲存”。

示例

1                          ;@.text
2                          ;@.globl funstm
3                          ;@.align 0
4                          ;@ **** STM (Addressing Mode 4) ****
5                          ;
6                          ; Store multiple registers to memory
7                          ; from base address held in R9,
8                          ; increment base address after each use
9                          ; update R9 finally at end
10                         ;
11                   AREA example,CODE,READONLY
12
13                   label1
14
15   00000000   E1A09008   MOV     R9, R8
16   00000004   E8A901F7   STMIA   R9!, {R1,R0,R2,R4-R7,R8}
17
18
19                         ; -----------------------------------
20                         ; Example 2 shows pushing registers
21                         ; R0 thru R7 onto stack, together with
22                         ; the Link Register, at entry to a
23                         ; subroutine.
24                         ;
25                         ; Then at end of subroutine POP these
26                         ; same resisters off stack, and place
27                         ; the value of Link Reg onto PC causing
28                         ; a return to calling program
29
30
31                   AREA example,CODE,READONLY
32
33                   label1a
34   00000008   E8AD40FF   STMFD   R13!, {R0-R7,LR}
35   00000012   E8BD80FF   LDMFD   R13!, {R0-R7,PC}

更多資訊

請參閱定址模式 4：多重載入與儲存