diff options
author | Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> | 2008-09-17 07:39:45 -0400 |
---|---|---|
committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-09-19 12:21:31 -0400 |
commit | 73d4393d1df4ff3892b040396f101ede94e9e846 (patch) | |
tree | e819398b568c074c1d68d39173bfd68529966168 /arch | |
parent | e37925ebdb9738fc7968119198c6997e79093c02 (diff) |
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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/avr32/kernel/syscall-stubs.S | 9 | ||||
-rw-r--r-- | arch/avr32/kernel/syscall_table.S | 2 |
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S index 890286a1e62b..673178e235f3 100644 --- a/arch/avr32/kernel/syscall-stubs.S +++ b/arch/avr32/kernel/syscall-stubs.S | |||
@@ -109,3 +109,12 @@ __sys_epoll_pwait: | |||
109 | rcall sys_epoll_pwait | 109 | rcall sys_epoll_pwait |
110 | sub sp, -4 | 110 | sub sp, -4 |
111 | popm pc | 111 | popm pc |
112 | |||
113 | .global __sys_sync_file_range | ||
114 | .type __sys_sync_file_range,@function | ||
115 | __sys_sync_file_range: | ||
116 | pushm lr | ||
117 | st.w --sp, ARG6 | ||
118 | rcall sys_sync_file_range | ||
119 | sub sp, -4 | ||
120 | popm pc | ||
diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S index 478bda4c4a09..7ee0057613b3 100644 --- a/arch/avr32/kernel/syscall_table.S +++ b/arch/avr32/kernel/syscall_table.S | |||
@@ -275,7 +275,7 @@ sys_call_table: | |||
275 | .long sys_set_robust_list | 275 | .long sys_set_robust_list |
276 | .long sys_get_robust_list /* 260 */ | 276 | .long sys_get_robust_list /* 260 */ |
277 | .long __sys_splice | 277 | .long __sys_splice |
278 | .long sys_sync_file_range | 278 | .long __sys_sync_file_range |
279 | .long sys_tee | 279 | .long sys_tee |
280 | .long sys_vmsplice | 280 | .long sys_vmsplice |
281 | .long __sys_epoll_pwait /* 265 */ | 281 | .long __sys_epoll_pwait /* 265 */ |