[英]Running binary file with qemu
I am learning arm assembly language in my one course. 我在一门课程中正在学习手臂汇编语言。 I am having little problem in getting started.
我入门没有什么问题。 I have written a simple c code:
我写了一个简单的C代码:
int main()
{
int a = 10;
int b = 20;
int c = a+b;
}
And then I converted it to assembly code using gnu arm by giving the command: 然后通过使用以下命令,使用gnu arm将其转换为汇编代码:
arm-elf-gcc -S first.c
This generated a file first.s containing assembly code: 这首先生成一个包含汇编代码的文件:
.file "first.c"
.text
.align 2
.global main
.type main, %function
main:
@ args = 0, pretend = 0, frame = 12
@ frame_needed = 1, uses_anonymous_args = 0
mov ip, sp
stmfd sp!, {fp, ip, lr, pc}
sub fp, ip, #4
sub sp, sp, #12
mov r3, #10
str r3, [fp, #-16]
mov r3, #20
str r3, [fp, #-20]
ldr r2, [fp, #-16]
ldr r3, [fp, #-20]
add r3, r2, r3
str r3, [fp, #-24]
mov r0, r3
sub sp, fp, #12
ldmfd sp, {fp, sp, pc}
.size main, .-main
.ident "GCC: (GNU) 3.4.3"
Then I compiled the assembly code using following command: 然后,我使用以下命令编译了汇编代码:
arm-elf-gcc -g first.s
This generated a.out binary file. 这将生成一个.out二进制文件。 Then I tried to run a.out with qemu using command:
然后我尝试使用命令使用qemu运行a.out:
qemu-arm a.out
But this generates output 但这会产生输出
Segmentation fault
I can't find the mistake, what am I doing wrong? 我找不到错误,我在做什么错?
You are trying to run qemu in user mode. 您正在尝试在用户模式下运行qemu。 You also need to link the libraries which corresponds to arm.
您还需要链接与arm对应的库。
take a look at the script files in below pkg. 看看pkg下面的脚本文件。
http://wiki.qemu.org/download/linux-user-test-0.3.tar.gz http://wiki.qemu.org/download/linux-user-test-0.3.tar.gz
You will need to run qemu -L library_PATH_ARM ./a.out 您将需要运行qemu -L library_PATH_ARM ./a.out
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