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[PATCH 15/17] Use shmdt syscall for linux implementation
- From: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- To: libc-alpha at sourceware dot org
- Date: Mon, 12 Dec 2016 10:33:08 -0200
- Subject: [PATCH 15/17] Use shmdt syscall for linux implementation
- Authentication-results: sourceware.org; auth=none
- References: <1481545990-7247-1-git-send-email-adhemerval.zanella@linaro.org>
this patch add a direct call to shmdt syscall if it is supported by
kernel features.
hecked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmdt): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmdt):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmdt):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmdt): Likewise.
* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Use shmdt syscall if it is
defined.
---
ChangeLog | 14 ++++++++++++++
sysdeps/unix/sysv/linux/alpha/syscalls.list | 1 -
sysdeps/unix/sysv/linux/arm/syscalls.list | 1 -
sysdeps/unix/sysv/linux/generic/syscalls.list | 1 -
sysdeps/unix/sysv/linux/hppa/syscalls.list | 1 -
sysdeps/unix/sysv/linux/ia64/syscalls.list | 1 -
sysdeps/unix/sysv/linux/microblaze/syscalls.list | 1 -
sysdeps/unix/sysv/linux/mips/mips64/syscalls.list | 1 -
sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list | 1 -
sysdeps/unix/sysv/linux/shmdt.c | 12 +++++++-----
sysdeps/unix/sysv/linux/x86_64/syscalls.list | 1 -
11 files changed, 21 insertions(+), 14 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index bf9c8ad..096bf22 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -1,6 +1,5 @@
# File name Caller Syscall name # args Strong name Weak names
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
sigstack - sigstack 2 sigstack
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index f50a5cf..b1ea664 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -23,7 +23,6 @@ personality EXTRA personality Ei:i __personality personality
# Semaphore and shm system calls. msgctl, shmctl, and semctl have C
# wrappers (to set __IPC_64).
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
# proper socket implementations:
diff --git a/sysdeps/unix/sysv/linux/generic/syscalls.list b/sysdeps/unix/sysv/linux/generic/syscalls.list
index 80244c4..51ce148 100644
--- a/sysdeps/unix/sysv/linux/generic/syscalls.list
+++ b/sysdeps/unix/sysv/linux/generic/syscalls.list
@@ -2,7 +2,6 @@
# SysV APIs
shmget - shmget i:iii __shmget shmget
-shmdt - shmdt i:s __shmdt shmdt
# Socket APIs
socket - socket i:iii __socket socket
diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list
index d755bfd..e75dd43 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscalls.list
+++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list
@@ -1,7 +1,6 @@
# File name Caller Syscall name # args Strong name Weak names
# semaphore and shm system calls
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
# proper socket implementations:
diff --git a/sysdeps/unix/sysv/linux/ia64/syscalls.list b/sysdeps/unix/sysv/linux/ia64/syscalls.list
index 90bd870..5ebade1 100644
--- a/sysdeps/unix/sysv/linux/ia64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/ia64/syscalls.list
@@ -5,7 +5,6 @@ umount2 - umount 2 __umount2 umount2
getpriority - getpriority i:ii __getpriority getpriority
# semaphore and shm system calls
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
# proper socket implementations:
diff --git a/sysdeps/unix/sysv/linux/microblaze/syscalls.list b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
index 8b844f2..7a5666f 100644
--- a/sysdeps/unix/sysv/linux/microblaze/syscalls.list
+++ b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
@@ -8,5 +8,4 @@ personality EXTRA personality Ei:i __personality personality
# Semaphore and shm system calls. msgctl, shmctl, and semctl have C
# wrappers (to set __IPC_64).
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
index e93c87a..e8e381b 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
@@ -2,5 +2,4 @@
# Semaphore and shm system calls. msgctl, shmctl, and semctl have C
# wrappers (to set __IPC_64).
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list
index 4d478ce..0ccbffa 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list
@@ -1,5 +1,4 @@
# File name Caller Syscall name # args Strong name Weak names
# semaphore and shm system calls
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
diff --git a/sysdeps/unix/sysv/linux/shmdt.c b/sysdeps/unix/sysv/linux/shmdt.c
index 7224d6f..5f3363e 100644
--- a/sysdeps/unix/sysv/linux/shmdt.c
+++ b/sysdeps/unix/sysv/linux/shmdt.c
@@ -16,12 +16,10 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <errno.h>
-#include <sys/shm.h>
+#include <sys/msg.h>
#include <ipc_priv.h>
-
#include <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
/* Detach shared memory segment starting at address specified by SHMADDR
from the caller's data segment. */
@@ -29,5 +27,9 @@
int
shmdt (const void *shmaddr)
{
- return INLINE_SYSCALL (ipc, 5, IPCOP_shmdt, 0, 0, 0, (void *) shmaddr);
+#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+ return INLINE_SYSCALL_CALL (shmdt, shmaddr);
+#else
+ return INLINE_SYSCALL_CALL (ipc, IPCOP_shmdt, 0, 0, 0, shmaddr);
+#endif
}
diff --git a/sysdeps/unix/sysv/linux/x86_64/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
index 18bd588..cb1a9f9 100644
--- a/sysdeps/unix/sysv/linux/x86_64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
@@ -6,7 +6,6 @@ pread64 - pread64 Ci:ipii __libc_pread __libc_pread64 __pread64 pread64 __prea
preadv64 - preadv Ci:ipii preadv64 preadv
pwrite64 - pwrite64 Ci:ipii __libc_pwrite __libc_pwrite64 __pwrite64 pwrite64 __pwrite pwrite
pwritev64 - pwritev Ci:ipii pwritev64 pwritev
-shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
syscall_clock_gettime EXTRA clock_gettime Ei:ip __syscall_clock_gettime
--
2.7.4