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Questions - elf

What is the difference between readelf -sD and readelf --dyn-syms

From readelf's manpage, I see that --dyn-syms Display the dynamic symbol table -s --syms Display the symbol table -D --use-dynamic Use the dynamic section info when disp...
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calvin

elf

readelf

Votes: 0

Answers: 0

How to use -fPIC and -fPIE GCC options correctly

I have a directory structure like this dir1 one.c two.c dir2 three_main.c four.c I need to create a shared library libdir1.so out of all c files in dir1 and an executable my_exe out o...
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Harish Reddy

c

gcc

compilation

elf

Votes: 0

Answers: 1

Latest Answer

Should I use -fPIC and -fPIE in step1 or step2 or in both? No. The way you currently build the .so and the binary is correct / optimal. Can I use -fPIE in step2 in creating the .so file? You could...
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Employed Russian

va_args not accepting signed integer in C

I was designing my kernel using C. While making the kprintf function (a function like printf but works with the kernel) I saw that signed integers (precisely the data type is long), va_args is convert...
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0xdead

c

string

variadic-functions

elf

unsigned-integer

Votes: 0

Answers: 2

Latest Answer

The type of the value you're passing in for your %d specifier doesn't match what va_arg is expecting. You're telling va_arg to expect a long long, but 1234 and -1234 have type int. These types are di...
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dbush

Why does gcc not produce DWARF5 bin even after passing ``-gdwarf-5`` flag?

I am trying to compile a basic c program to get the binary ELF on my Ubuntu x86-64 machine. I want the binary to comply with the DWARF5 format as I am working on writing a .debug_sup section parser. H...
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dg_linux

debugging

gcc

reverse-engineering

elf

dwarf

Votes: 0

Answers: 0

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