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[PATCH] x86-64: Add p{read,write}[v]64 to syscalls.list [BZ #20348]


64-bit off_t in pread64, preadv, pwrite64 and pwritev syscalls is pased
in one 64-bit register for both x32 and x86-64.  Since the inline
asm statement only passes long, which is 32-bit for x32, in registers,
64-bit off_t is truncated to 32-bit on x32.  Since __ASSUME_PREADV and
__ASSUME_PWRITEV are defined unconditionally, these syscalls can be
implemented in syscalls.list to pass 64-bit off_t in one 64-bit register.

Tested on x86-64 and x32 with off_t > 4GB on pread64/pwrite64 and
preadv64/pwritev64.

OK for master?

H.J.
---
	[BZ #20348]
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Add pread64,
	preadv64, pwrite64 and pwritev64.
---
 sysdeps/unix/sysv/linux/x86_64/syscalls.list | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sysdeps/unix/sysv/linux/x86_64/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
index d09d101..bcf6370 100644
--- a/sysdeps/unix/sysv/linux/x86_64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
@@ -6,6 +6,10 @@ msgctl		-	msgctl		i:iip	__msgctl	msgctl
 msgget		-	msgget		i:ii	__msgget	msgget
 msgrcv		-	msgrcv		Ci:ibnii __msgrcv	msgrcv
 msgsnd		-	msgsnd		Ci:ibni	__msgsnd	msgsnd
+pread64		-	pread64		Ci:ipii	__libc_pread	__libc_pread64 __pread64 pread64 __pread pread
+preadv64	-	preadv		Ci:ipii	preadv64	preadv
+pwrite64	-	pwrite64	Ci:ipii	__libc_pwrite	__pwrite64 pwrite64 __pwrite pwrite
+pwritev64	-	pwritev		Ci:ipii	pwritev64	pwritev
 shmat		-	shmat		i:ipi	__shmat		shmat
 shmctl		-	shmctl		i:iip	__shmctl	shmctl
 shmdt		-	shmdt		i:s	__shmdt		shmdt
-- 
2.7.4


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