avr32: wire up missing syscalls

This patch adds a bunch of missing syscalls to AVR32:
__NR_pread64
__NR_pwrite64
__NR_timerfd_create
__NR_fallocate
__NR_timerfd_settime
__NR_timerfd_gettime
__NR_signalfd4
__NR_eventfd2
__NR_epoll_create1
__NR_dup3
__NR_pipe2
__NR_inotify_init1
__NR_preadv
__NR_pwritev
__NR_rt_tgsigqueueinfo
__NR_perf_event_open
__NR_recvmmsg
__NR_fanotify_init
__NR_fanotify_mark
__NR_prlimit64
__NR_name_to_handle_at
__NR_open_by_handle_at
__NR_clock_adjtime
__NR_syncfs
__NR_sendmmsg
__NR_process_vm_readv
__NR_process_vm_writev
__NR_kcmp
__NR_finit_module
__NR_sched_setattr
__NR_sched_getattr
__NR_renameat2
__NR_seccomp
__NR_getrandom
__NR_memfd_create
__NR_bpf
__NR_execveat

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 relates to syscall fallocate, fanotify_mark, process_vm_readv, and
process_vm_writev.

Signed-off-by: Hans-Christian Egtvedt <[email protected]>

Author: egtvedt

arch/avr32/include/asm/unistd.h

@@ -10,7 +10,7 @@
 
 #include <uapi/asm/unistd.h>
 
-#define NR_syscalls		284
+#define NR_syscalls		321
 
 /* Old stuff */
 #define __IGNORE_uselib

arch/avr32/include/uapi/asm/unistd.h

@@ -222,7 +222,6 @@
 #define __NR_epoll_wait		207
 #define __NR_remap_file_pages	208
 #define __NR_set_tid_address	209
-
 #define __NR_timer_create	210
 #define __NR_timer_settime	211
 #define __NR_timer_gettime	212
@@ -238,7 +237,6 @@
 				/* 222 reserved for tux */
 #define __NR_utimes		223
 #define __NR_fadvise64_64	224
-
 #define __NR_cacheflush		225
 
 #define __NR_vserver		226
@@ -281,7 +279,6 @@
 #define __NR_tee		263
 #define __NR_vmsplice		264
 #define __NR_epoll_pwait	265
-
 #define __NR_msgget		266
 #define __NR_msgsnd		267
 #define __NR_msgrcv		268
@@ -294,11 +291,47 @@
 #define __NR_shmget		275
 #define __NR_shmdt		276
 #define __NR_shmctl		277
-
 #define __NR_utimensat		278
 #define __NR_signalfd		279
 /* 280 was __NR_timerfd */
 #define __NR_eventfd		281
 #define __NR_setns		283
+#define __NR_pread64		284
+#define __NR_pwrite64		285
+#define __NR_timerfd_create	286
+#define __NR_fallocate		287
+#define __NR_timerfd_settime	288
+#define __NR_timerfd_gettime	289
+#define __NR_signalfd4		290
+#define __NR_eventfd2		291
+#define __NR_epoll_create1	292
+#define __NR_dup3		293
+#define __NR_pipe2		294
+#define __NR_inotify_init1	295
+#define __NR_preadv		296
+#define __NR_pwritev		297
+#define __NR_rt_tgsigqueueinfo	298
+#define __NR_perf_event_open	299
+#define __NR_recvmmsg		300
+#define __NR_fanotify_init	301
+#define __NR_fanotify_mark	302
+#define __NR_prlimit64		303
+#define __NR_name_to_handle_at	304
+#define __NR_open_by_handle_at	305
+#define __NR_clock_adjtime	306
+#define __NR_syncfs		307
+#define __NR_sendmmsg		308
+#define __NR_process_vm_readv	309
+#define __NR_process_vm_writev	310
+#define __NR_kcmp		311
+#define __NR_finit_module	312
+#define __NR_sched_setattr	313
+#define __NR_sched_getattr	314
+#define __NR_renameat2		315
+#define __NR_seccomp		316
+#define __NR_getrandom		317
+#define __NR_memfd_create	318
+#define __NR_bpf		319
+#define __NR_execveat		320
 
 #endif /* _UAPI__ASM_AVR32_UNISTD_H */

arch/avr32/kernel/syscall-stubs.S

@@ -88,3 +88,39 @@ __sys_sync_file_range:
 	call	sys_sync_file_range
 	sub	sp, -4
 	popm	pc
+
+	.global __sys_fallocate
+	.type	__sys_fallocate,@function
+__sys_fallocate:
+	pushm	lr
+	st.w	--sp, ARG6
+	call	sys_fallocate
+	sub	sp, -4
+	popm	pc
+
+	.global __sys_fanotify_mark
+	.type	__sys_fanotify_mark,@function
+__sys_fanotify_mark:
+	pushm	lr
+	st.w	--sp, ARG6
+	call	sys_fanotify_mark
+	sub	sp, -4
+	popm	pc
+
+	.global __sys_process_vm_readv
+	.type	__sys_process_vm_readv,@function
+__sys_process_vm_readv:
+	pushm	lr
+	st.w	--sp, ARG6
+	call	sys_process_vm_readv
+	sub	sp, -4
+	popm	pc
+
+	.global __sys_process_vm_writev
+	.type	__sys_process_vm_writev,@function
+__sys_process_vm_writev:
+	pushm	lr
+	st.w	--sp, ARG6
+	call	sys_process_vm_writev
+	sub	sp, -4
+	popm	pc

arch/avr32/kernel/syscall_table.S

@@ -297,4 +297,41 @@ sys_call_table:
 	.long	sys_eventfd
 	.long	sys_recvmmsg
 	.long	sys_setns
+	.long	sys_pread64
+	.long	sys_pwrite64		/* 285 */
+	.long	sys_timerfd_create
+	.long	__sys_fallocate
+	.long	sys_timerfd_settime
+	.long	sys_timerfd_gettime
+	.long	sys_signalfd4		/* 290 */
+	.long	sys_eventfd2
+	.long	sys_epoll_create1
+	.long	sys_dup3
+	.long	sys_pipe2
+	.long	sys_inotify_init1	/* 295 */
+	.long	sys_preadv
+	.long	sys_pwritev
+	.long	sys_rt_tgsigqueueinfo
+	.long	sys_perf_event_open
+	.long	sys_recvmmsg		/* 300 */
+	.long	sys_fanotify_init
+	.long	__sys_fanotify_mark
+	.long	sys_prlimit64
+	.long	sys_name_to_handle_at
+	.long	sys_open_by_handle_at	/* 305 */
+	.long	sys_clock_adjtime
+	.long	sys_syncfs
+	.long	sys_sendmmsg
+	.long	__sys_process_vm_readv
+	.long	__sys_process_vm_writev	/* 310 */
+	.long	sys_kcmp
+	.long	sys_finit_module
+	.long	sys_sched_setattr
+	.long	sys_sched_getattr
+	.long	sys_renameat2		/* 315 */
+	.long	sys_seccomp
+	.long	sys_getrandom
+	.long	sys_memfd_create
+	.long	sys_bpf
+	.long	sys_execveat		/* 320 */
 	.long	sys_ni_syscall		/* r8 is saturated at nr_syscalls */