Difference between revisions of "Objdump"
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imported>ThorstenStaerk (New page: Nokia-N810-43-7:~# cat main.cpp #include <iostream> int main() { std::cout << "hello world" << std::endl; } Nokia-N810-43-7:~# g\+\+-3.4 main.cpp Now we look at a fixed-length-c...) |
imported>ThorstenStaerk |
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| − | + | Objdump displays information from object files. That means you can for example disassemble an executable file with it. | |
| + | |||
| + | = Disassembly = | ||
| + | Let's look at an example: | ||
| + | # cat main.cpp | ||
#include <iostream> | #include <iostream> | ||
int main() | int main() | ||
| Line 5: | Line 9: | ||
std::cout << "hello world" << std::endl; | std::cout << "hello world" << std::endl; | ||
} | } | ||
| + | You can now compile this file and look at the executable file using objdump. | ||
| + | |||
| + | == ARM == | ||
| + | Here is the disassembly on the ARM architecture, a fixed-length-command-set-architecture: | ||
Nokia-N810-43-7:~# g\+\+-3.4 main.cpp | Nokia-N810-43-7:~# g\+\+-3.4 main.cpp | ||
| − | |||
Nokia-N810-43-7:~# objdump -d a.out | head | Nokia-N810-43-7:~# objdump -d a.out | head | ||
Revision as of 09:10, 2 January 2010
Objdump displays information from object files. That means you can for example disassemble an executable file with it.
Disassembly
Let's look at an example:
# cat main.cpp
#include <iostream>
int main()
{
std::cout << "hello world" << std::endl;
}
You can now compile this file and look at the executable file using objdump.
ARM
Here is the disassembly on the ARM architecture, a fixed-length-command-set-architecture:
Nokia-N810-43-7:~# g\+\+-3.4 main.cpp
Nokia-N810-43-7:~# objdump -d a.out | head
a.out: file format elf32-littlearm
Disassembly of section .init:
000084f8 <_init>:
84f8: e52de004 str lr, [sp, #-4]!
84fc: e24dd004 sub sp, sp, #4 ; 0x4
8500: eb000035 bl 85dc <call_gmon_start>
8504: e28dd004 add sp, sp, #4 ; 0x4
