[PATCH 19/47] Update CRISv32 entry.S to working order.

Jesper Nilsson
2007-12-06T12:47:55Z

- Remove oldset parameter.
- Utilise delay-slot for parameter moving.
- Add kernel_execve as break 13.
- Add new kernel syscalls.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
---
arch/cris/arch-v32/kernel/entry.S | 82 +++++++++++++++++++++++++++++--------
1 files changed, 64 insertions(+), 18 deletions(-)

diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
index f9d2780..596184c 100644
--- a/arch/cris/arch-v32/kernel/entry.S
+++ b/arch/cris/arch-v32/kernel/entry.S
@@ -10,7 +10,7 @@
* after a timer-interrupt and after each system call.
*
* Stack layout in 'ret_from_system_call':
- * ptrace needs to have all regs on the stack.
+ * ptrace needs to have all regs on the stack.
* if the order here is changed, it needs to be
* updated in fork.c:copy_process, signal.c:do_signal,
* ptrace.c and ptrace.h
@@ -281,12 +281,10 @@ _work_notifysig:
;; Deal with pending signals and notify-resume requests.

addoq +TI_flags, $r0, $acr
- move.d [$acr], $r13 ; The thread_info_flags parameter.
- move.d $r9, $r10 ; do_notify_resume syscall/irq param.
- moveq 0, $r11 ; oldset param - 0 in this case.
- move.d $sp, $r12 ; The regs param.
+ move.d [$acr], $r12 ; The thread_info_flags parameter.
+ move.d $sp, $r11 ; The regs param.
jsr do_notify_resume
- nop
+ move.d $r9, $r10 ; do_notify_resume syscall/irq param.

ba _Rexit
nop
@@ -396,7 +394,7 @@ nmi_interrupt:
btstq REG_BIT(intr_vect, r_nmi, watchdog), $r0
bpl 1f
nop
- jsr handle_watchdog_bite ; In time.c.
+ jsr handle_watchdog_bite ; In time.c.
move.d $sp, $r10 ; Pointer to registers
1: btstq REG_BIT(intr_vect, r_nmi, ext), $r0
bpl 1f
@@ -515,6 +513,13 @@ _ugdb_handle_exception:
ba do_sigtrap ; SIGTRAP the offending process.
move.d [$sp+], $r0 ; Restore R0 in delay slot.

+ .global kernel_execve
+kernel_execve:
+ move.d __NR_execve, $r9
+ break 13
+ ret
+ nop
+
.data

.section .rodata,"a"
@@ -778,21 +783,21 @@ sys_call_table:
.long sys_epoll_ctl /* 255 */
.long sys_epoll_wait
.long sys_remap_file_pages
- .long sys_set_tid_address
- .long sys_timer_create
- .long sys_timer_settime /* 260 */
- .long sys_timer_gettime
- .long sys_timer_getoverrun
- .long sys_timer_delete
- .long sys_clock_settime
- .long sys_clock_gettime /* 265 */
- .long sys_clock_getres
- .long sys_clock_nanosleep
+ .long sys_set_tid_address
+ .long sys_timer_create
+ .long sys_timer_settime /* 260 */
+ .long sys_timer_gettime
+ .long sys_timer_getoverrun
+ .long sys_timer_delete
+ .long sys_clock_settime
+ .long sys_clock_gettime /* 265 */
+ .long sys_clock_getres
+ .long sys_clock_nanosleep
.long sys_statfs64
.long sys_fstatfs64
.long sys_tgkill /* 270 */
.long sys_utimes
- .long sys_fadvise64_64
+ .long sys_fadvise64_64
.long sys_ni_syscall /* sys_vserver */
.long sys_ni_syscall /* sys_mbind */
.long sys_ni_syscall /* 275 sys_get_mempolicy */
@@ -805,6 +810,47 @@ sys_call_table:
.long sys_mq_getsetattr
.long sys_ni_syscall /* reserved for kexec */
.long sys_waitid
+ .long sys_ni_syscall /* 285 */ /* available */
+ .long sys_add_key
+ .long sys_request_key
+ .long sys_keyctl
+ .long sys_ioprio_set
+ .long sys_ioprio_get /* 290 */
+ .long sys_inotify_init
+ .long sys_inotify_add_watch
+ .long sys_inotify_rm_watch
+ .long sys_migrate_pages
+ .long sys_openat /* 295 */
+ .long sys_mkdirat
+ .long sys_mknodat
+ .long sys_fchownat
+ .long sys_futimesat
+ .long sys_fstatat64 /* 300 */
+ .long sys_unlinkat
+ .long sys_renameat
+ .long sys_linkat
+ .long sys_symlinkat
+ .long sys_readlinkat /* 305 */
+ .long sys_fchmodat
+ .long sys_faccessat
+ .long sys_pselect6
+ .long sys_ppoll
+ .long sys_unshare /* 310 */
+ .long sys_set_robust_list
+ .long sys_set_robust_list
+ .long sys_get_robust_list
+ .long sys_splice
+ .long sys_sync_file_range
+ .long sys_tee /* 315 */
+ .long sys_vmsplice
+ .long sys_move_pages
+ .long sys_getcpu
+ .long sys_epoll_pwait
+ .long sys_utimensat /* 320 */
+ .long sys_signalfd
+ .long sys_timerfd
+ .long sys_eventfd
+ .long sys_fallocate

/*
* NOTE!! This doesn't have to be exact - we just have
--
1.5.3.6.970.gd25430