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 <egtvedt@samfundet.no>

4 files changed, 111 insertions, 5 deletions

diff --git a/arch/avr32/include/asm/unistd.h b/arch/avr32/include/asm/unistd.h
index c1eb080e45fe..2011bee3f252 100644
--- a/arch/avr32/include/asm/unistd.h
+++ b/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
diff --git a/arch/avr32/include/uapi/asm/unistd.h b/arch/avr32/include/uapi/asm/unistd.h
index 8822bf46ddc6..bbe2fba565cd 100644
--- a/arch/avr32/include/uapi/asm/unistd.h
+++ b/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 */
diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S
index b5fc927cd398..f9c68fab0e2f 100644
--- a/arch/avr32/kernel/syscall-stubs.S
+++ b/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
diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
index 017a904180c8..c3b593bfc3b3 100644
--- a/arch/avr32/kernel/syscall_table.S
+++ b/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 */