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g++, R_X86_64_32S : what is it?


g++, R_X86_64_32S : what is it?

By : user3849965
Date : October 21 2020, 11:12 AM
seems to work fine It appears to be a relocation error, some of your files aren't being compiled with -fPIC. Change your flags to include -fPIC and then do a make clean before building again.
code :


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What do R_X86_64_32S and R_X86_64_64 relocation mean?

What do R_X86_64_32S and R_X86_64_64 relocation mean?


By : user3101595
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The R_X86_64_32S and R_X86_64_64 are names of relocation types, for code compiled for the amd64 architecture. You can look all of them up in the amd64 ABI. According to it, R_X86_64_64 is broken down to:
R_X86_64 - all names are prefixed with this 64 - Direct 64 bit relocation
Relocation R_X86_64_32S against `.rodata' ... While compiling on 64-bit platform

Relocation R_X86_64_32S against `.rodata' ... While compiling on 64-bit platform


By : Jay Pandya
Date : March 29 2020, 07:55 AM
I wish this help you The solution was to compile everything with -fPIC, and link shared objects with -shared.
Add -fPIC to CFLAGS or CXXFLAGS for make-based projects.
GCC-Assemby Error: Relocation R_X86_64_32S against '.data'

GCC-Assemby Error: Relocation R_X86_64_32S against '.data'


By : jigme1968
Date : March 29 2020, 07:55 AM
this will help The specific error is due to the push instruction only supporting 32 bit immediates and you tried to use that for a 64 bit address.
However, the whole code is wrong. It's unclear whether you want 32 or 64 bit code. Most of the code seems to be 32 bit, except for the pushq so I assume you really wanted 32 bit code. For that, change all those to push (which is a good idea anyway) and compile using gcc -m32. Also, you only need to remove 4 bytes from the stack, so use addl $4, %esp. ( to @Employed Russian for pointing this out.)
code :
.section .data
msg:
    .asciz "Printf In Assembly!!\n"

.section .text
.globl main
main:
    subq $8, %rsp
    leaq msg(%rip), %rdi
    xor %al, %al
    call printf

    xor %edi, %edi
    call exit
Cygwin: Relocation truncated to fit R_X86_64_32S against '.data'

Cygwin: Relocation truncated to fit R_X86_64_32S against '.data'


By : Smrum
Date : March 29 2020, 07:55 AM
wish helps you It seems your assembler code is intended for 32-bit machine but you're assembling for x64. Try adding -m32 on the command line.
"relocation R_X86_64_32S against `.bss' can not be used when making a shared object”

"relocation R_X86_64_32S against `.bss' can not be used when making a shared object”


By : ktk
Date : March 29 2020, 07:55 AM
With these it helps You need to make certain you're writing position independent code. The idea of PIC is that to make code truly position-independent, you need at least one level of indirection. That level of indirection is IP-relative addressing, and when that is not enough, you will need a second layer, the Global Offset Table or GOT.
In NASM, you will find the DEFAULT REL directive(s) useful.
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