Hi,
Simple code:
$ cat simple_64bit_syscall.s
.text
.globl main
main:
xorq %rax, %rax
xorq %rdi, %rdi
xorq %rsi, %rsi
xorq %rdx, %rdx
xorq %rcx, %rcx
xorq %r8, %r8
xorq %r9, %r9
movq $1, %rax
int $0x91
$ as -xarch=amd64 simple_64bit_syscall.s -o simple_64bit_syscall.o && ld
simple_64bit_syscall.o -o simple_64bit_syscall
$ truss ./simple_64bit_syscall
execve("simple_64bit_syscall", 0xFFFFFD7FFFDFFD08, 0xFFFFFD7FFFDFFD18)
argc = 1
mmap(0x00000000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANON, 4294967295, 0) = 0xFFFFFD7FFF3A0000
resolvepath("/usr/lib/amd64/ld.so.1", "/lib/amd64/ld.so.1", 1023) = 18
getcwd("/home/estibi", 1002) = 0
resolvepath("/home/estibi/simple_64bit_syscall",
"/home/estibi/simple_64bit_syscall", 1023) = 33
stat("/home/estibi/simple_64bit_syscall", 0xFFFFFD7FFFDFF910) = 0
open("/var/ld/64/ld.config", O_RDONLY) Err#2 ENOENT
_exit(-2753074036736)
Why the function argument is '-2753074036736' instaad of 1?
--
Regards,
Piotr Jasiukajtis | estibi | SCA OS0072
http://estseg.blogspot.com
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