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authorHans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>2008-09-17 13:39:45 +0200
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-09-19 18:21:31 +0200
commit73d4393d1df4ff3892b040396f101ede94e9e846 (patch)
treee819398b568c074c1d68d39173bfd68529966168
parente37925ebdb9738fc7968119198c6997e79093c02 (diff)
downloadlinux-linaro-android-73d4393d1df4ff3892b040396f101ede94e9e846.tar.gz
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>
-rw-r--r--arch/avr32/kernel/syscall-stubs.S9
-rw-r--r--arch/avr32/kernel/syscall_table.S2
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S
index 890286a1e62..673178e235f 100644
--- a/arch/avr32/kernel/syscall-stubs.S
+++ b/arch/avr32/kernel/syscall-stubs.S
@@ -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
diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
index 478bda4c4a0..7ee0057613b 100644
--- a/arch/avr32/kernel/syscall_table.S
+++ b/arch/avr32/kernel/syscall_table.S
@@ -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 */