本文共 3345 字，大约阅读时间需要 11 分钟。

00. 目录

01. ldmea指令

程序示例

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    push {lr}    adr r4, .L1    ldmea r4, {r1, r2, r3}    ldr r0, =.LC1    bl printf    mov r0, #0    pop {pc}.L0:    .word 0x1111    .word 0x2222    .word 0x3333.L1:    .word 0x0

02. ldmed指令

程序示例

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    push {lr}    adr r4, .L0    ldmed r4, {r1-r3}    ldr r0, =.LC1    bl printf    mov r0, #0    pop {pc}.L0:    .word 0x1111    .word 0x2222    .word 0x3333.L1:    .word 0x0

03. ldmfa指令

程序示例

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    push {lr}    adr r4, .L1    ldmfa r4, {r1-r3}    ldr r0, =.LC1    bl printf    mov r0, #0    pop {pc}.L0:    .word 0x1111    .word 0x2222    .word 0x3333.L1:    .word 0x0

04. ldmfd指令

程序示例

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    push {lr}    adr r4, .L0    ldmfd r4, {r1-r3}    ldr r0, =.LC1    bl printf    mov r0, #0    pop {pc}.L0:    .word 0x1111    .word 0x2222    .word 0x3333.L1:    .word 0x0

05. stmea指令

程序示例:

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    stmfd sp!, {lr}    mov fp, sp    sub sp, sp, #12    mov r1, #1    mov r2, #2    mov r3, #3    stmea sp, {r1, r2, r3}    ldmfd sp, {r1, r2, r3}    ldr r0, =.LC1    bl printf    mov r0, #0    mov sp, fp    ldmfd sp!, {lr}

06. stmed指令

程序示例:

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    stmfd sp!, {lr}    mov fp, sp    sub sp, sp, #4    mov r1, #1    mov r2, #2    mov r3, #3    stmed sp!, {r1, r2, r3}    ldmed sp!, {r1, r2, r3}    ldr r0, =.LC1    bl printf    mov r0, #0    mov sp, fp    ldmfd sp!, {lr}

07. stmfa指令

程序示例:

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    stmfd sp!, {lr}    mov fp, sp    sub sp, sp, #16    mov r1, #1    mov r2, #2    mov r3, #3    stmfa sp, {r1, r2, r3}    ldmed sp, {r1, r2, r3}    ldr r0, =.LC1    bl printf    mov r0, #0    mov sp, fp    ldmfd sp!, {lr}

08. stmfd指令

程序示例:

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n"    .section .text    .align 2    .global mainmain:    stmfd sp!, {lr}    mov fp, sp    mov r1, #1    mov r2, #2    mov r3, #3    stmfd sp, {r1, r2, r3}    ldmea sp, {r1, r2, r3}    ldr r0, =.LC1    bl printf    mov r0, #0    mov sp, fp    ldmfd sp!, {lr}

09. swp指令

程序示例:

.section .rodata    .align 2.LC0:    .string "hello world\n".LC1:    .string "var = %p %p %p\n".LC2:    .string "val = %d\n"    .section .text    .align 2    .global mainmain:    stmfd sp!, {lr}    mov fp, sp    sub sp, sp, #4    mov r0, #10    str r0, [sp]    mov r2, #20    swp r1, r2, [sp]    ldr r0, =.LC2    bl printf    ldr r1, [sp]    ldr r0, =.LC2    bl printf    mov r0, #0    mov sp, fp    ldmfd sp!, {lr}

06. 附录

6.1

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