Commit 73d4393d authored Sep 17, 2008 by Hans-Christian Egtvedt Committed by Haavard Skinnemoen Sep 19, 2008

avr32: fix sys_sync_file_range() call convention

On AVR32, all parameters beyond the 5th are passed on the stack. System
calls don't use the stack -- they borrow a callee-saved register
instead. This means that syscalls that take 6 parameters must be called
through a stub that pushes the last parameter on the stack.

This patch adds a stub for sync_file_range syscall on AVR32
architecture. Tested with uClibc snapshot.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

parent e37925eb

arch/avr32/kernel/syscall-stubs.S

+9 −0

Original line number	Diff line number	Diff line
		@@ -109,3 +109,12 @@ __sys_epoll_pwait:
		rcall sys_epoll_pwait
		sub sp, -4
		popm pc

		.global __sys_sync_file_range
		.type __sys_sync_file_range,@function
		__sys_sync_file_range:
		pushm lr
		st.w --sp, ARG6
		rcall sys_sync_file_range
		sub sp, -4
		popm pc

arch/avr32/kernel/syscall_table.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -275,7 +275,7 @@ sys_call_table:
		.long sys_set_robust_list
		.long sys_get_robust_list /* 260 */
		.long __sys_splice
		.long sys_sync_file_range
		.long __sys_sync_file_range
		.long sys_tee
		.long sys_vmsplice
		.long __sys_epoll_pwait /* 265 */