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make-syscalls.sh
- From: yili0568 at gmail dot com
- To: carlos at systemhalted dot org
- Cc: libc-help at sourceware dot org
- Date: Mon, 19 Nov 2012 17:16:25 +0800
- Subject: make-syscalls.sh
Hello:
I've pulled the source codes of glibc,
>From make-syscalls.sh:
# Syscall Signature Key Letters for BP Thunks:
#
# a: unchecked address (e.g., 1st arg to mmap)
# b: non-NULL buffer (e.g., 2nd arg to read; return value from mmap)
# B: optionally-NULL buffer (e.g., 4th arg to getsockopt)
# f: buffer of 2 ints (e.g., 4th arg to socketpair)
# F: 3rd arg to fcntl
# i: scalar (any signedness & size: int, long, long long, enum, whatever)
# I: 3rd arg to ioctl
# n: scalar buffer length (e.g., 3rd arg to read)
# N: pointer to value/return scalar buffer length (e.g., 6th arg to recvfrom)
# p: non-NULL pointer to typed object (e.g., any non-void* arg)
# P: optionally-NULL pointer to typed object (e.g., 2nd argument to gettimeofday)
# s: non-NULL string (e.g., 1st arg to open)
# S: optionally-NULL string (e.g., 1st arg to acct)
# v: vararg scalar (e.g., optional 3rd arg to open)
# V: byte-per-page vector (3rd arg to mincore)
# W: wait status, optionally-NULL pointer to int (e.g., 2nd arg of wait4)
and form sysdeps/unix/sysv/linux/syscalls.list
# File name Caller Syscall name Args Strong name Weak names
......
creat - creat Ci:si __libc_creat creat
.....
clock_adjtime EXTRA clock_adjtime i:ip clock_adjtime
What's "C" means. Is i:ip means "return type: arg1 type, arg2 type"?
And what's the Caller means?