From b837e97fd35a6b551e3478ace0623a0bd744787c Mon Sep 17 00:00:00 2001 From: Hans-Christian Egtvedt Date: Sun, 28 Feb 2016 18:14:41 +0100 Subject: avr32: wire up copy_file_range syscall This patch wires up the new copy_file_range syscall on AVR32. 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. Signed-off-by: Hans-Christian Noren Egtvedt --- arch/avr32/kernel/syscall-stubs.S | 9 +++++++++ arch/avr32/kernel/syscall_table.S | 1 + 2 files changed, 10 insertions(+) (limited to 'arch/avr32/kernel') diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S index f9c68fab0e2f..cb3991552f14 100644 --- a/arch/avr32/kernel/syscall-stubs.S +++ b/arch/avr32/kernel/syscall-stubs.S @@ -124,3 +124,12 @@ __sys_process_vm_writev: call sys_process_vm_writev sub sp, -4 popm pc + + .global __sys_copy_file_range + .type __sys_copy_file_range,@function +__sys_copy_file_range: + pushm lr + st.w --sp, ARG6 + call sys_copy_file_range + sub sp, -4 + popm pc diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S index 1915a443b491..64d71a781fa8 100644 --- a/arch/avr32/kernel/syscall_table.S +++ b/arch/avr32/kernel/syscall_table.S @@ -338,4 +338,5 @@ sys_call_table: .long sys_userfaultfd .long sys_membarrier .long sys_mlock2 + .long __sys_copy_file_range /* 325 */ .long sys_ni_syscall /* r8 is saturated at nr_syscalls */ -- cgit v1.2.3