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[ARM] 2896/1: Add sys_ipc_wrapper to pass 'fifth' argument on stack 

Patch from George G. Davis

As pointed out be Matthew Klahn <MKLAHN@motorola.com>, some sys_ipc()
call options require six args, e.g. SEMTIMEDOP. This patch adds an ARM sys_ipc_wrapper to save the sys_ipc() 'fifth' arg on the stack.

Signed-off-by: George G. Davis <gdavis@mvista.com>
 arch/arm/kernel/calls.S        |    2 +-
 arch/arm/kernel/entry-common.S |    5 +++++
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
George G. Davis 2005-09-13 22:55:00 +01:00 committed by Russell King
parent 2f4ba45a75
commit 34f521fd55
2 changed files with 5 additions and 1 deletions
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2
arch/arm/kernel/calls.S
View File

@ -131,7 +131,7 @@ __syscall_start:
.long sys_wait4
/* 115 */ .long sys_swapoff
.long sys_sysinfo
.long sys_ipc
.long sys_ipc_wrapper
.long sys_fsync
.long sys_sigreturn_wrapper
/* 120 */ .long sys_clone_wrapper

4
arch/arm/kernel/entry-common.S
View File

@ -273,6 +273,10 @@ sys_mbind_wrapper:
str r5, [sp, #4]
b sys_mbind
sys_ipc_wrapper:
str r5, [sp, #4] @ push sixth arg
b sys_ipc
/*
* Note: off_4k (r5) is always units of 4K. If we can't do the requested
* offset, we return EINVAL.