- In computing, a
system call (commonly
abbreviated to
syscall) is the
programmatic way in
which a
computer program requests a
service from the operating...
- 32/64
syscall hole".
Linux Kernel Mailing List.
Retrieved 2013-08-02. Torvalds,
Linus (2009-02-28). "Re: [PATCH 2/2] x86-64: seccomp: fix 32/64
syscall hole"...
- count(); }' #
Syscall count by
syscall dtrace -n '
syscall:::entry { @num[probefunc] = count(); }' #
Syscall count by
process dtrace -n '
syscall:::entry {...
- # 4 (code for "write"
syscall) -> EAX
register movl $1, %ebx # 1 (file
descriptor for stdout) -> EBX (1st
argument to
syscall) movl $msg, %ecx # 32-bit...
-
syscall execution time and
count (-T, -c, -C, and -w options; -U
option enables printing of
additional information, like
minimum and
maximum syscall execution...
- load the
syscall number into the rax register, and the
other parameters into rdi, rsi, rdx, r10, r8, and r9, and
finally to put the
syscall ****embly instruction...
- completed, the sigreturn()
system call is called.
Calling the
sigreturn syscall means being able to
easily set the
contents of
registers using a single...
- size of a file, and
appending data can
happen after performing a s****
syscall to
position the
pointer at the end of the file
which is a
constant time...
- respectively. This may lead to
incorrectly using the
terms "system call" and "
syscall" to
refer to higher-level
library calls rather than the
similarly named...
- or pipes, the
entire operation will be
performed during the
io_submit syscall, with the
completion available immediately for
access with io_getevents...
