Hello binutil's staff,
I was writing a simple code and compiling it with gas. The code is what follows:
.globl _start.globl setuid
.section .text
_start:
call write call setuid
jmp exit
write:
movq $4, %rax movq $1, %rbx push $0x4142430a mov %rsp, %rcx //
here seems to be the error movq $4, %rdx int $0x80
retq
setuid:
movq $23, %rax xor %rbx, %rbx int $0x80
retq
exit:
movq $1, %rax movq $0, %rbx int $0x80
.section .rodata
text:
.ascii "writed.\n";
text_l = . - text
--
When assembled and linked with gas and ld I obtain a binary. So everything goes
fine.
When I execute that binary I obtain a segvfault.
I have the occurence of use gdb for viewing the code (which is okay) but when
runned it (the binary) I obtained the next segvfault:Program received signal
SIGSEGV, Segmentation fault.0x000000004142430a in ?? ()
It seems to be moving the content of %rsp to %rcx instead of the address
contained by %rsp. Like doing: mov (%rsp), %rcx. But disassembling its okay...
and it diferenciates between one form and the another form.
Abel.
Regards.
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