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Diffstat (limited to 'arch/xtensa/kernel/entry.S')
-rw-r--r--arch/xtensa/kernel/entry.S22
1 files changed, 6 insertions, 16 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 9e3676879168..be897803834a 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -529,7 +529,7 @@ common_exception_return:
l32i a4, a2, TI_PRE_COUNT
bnez a4, 4f
call4 preempt_schedule_irq
- j 1b
+ j 4f
#endif
#if XTENSA_FAKE_NMI
@@ -1876,8 +1876,7 @@ ENDPROC(fast_store_prohibited)
ENTRY(system_call)
- /* reserve 4 bytes on stack for function parameter */
- abi_entry(4)
+ abi_entry_default
/* regs->syscall = regs->areg[2] */
@@ -1892,11 +1891,10 @@ ENTRY(system_call)
mov a6, a2
call4 do_syscall_trace_enter
+ beqz a6, .Lsyscall_exit
l32i a7, a2, PT_SYSCALL
1:
- s32i a7, a1, 4
-
/* syscall = sys_call_table[syscall_nr] */
movi a4, sys_call_table
@@ -1906,8 +1904,6 @@ ENTRY(system_call)
addx4 a4, a7, a4
l32i a4, a4, 0
- movi a5, sys_ni_syscall;
- beq a4, a5, 1f
/* Load args: arg0 - arg5 are passed via regs. */
@@ -1918,25 +1914,19 @@ ENTRY(system_call)
l32i a10, a2, PT_AREG8
l32i a11, a2, PT_AREG9
- /* Pass one additional argument to the syscall: pt_regs (on stack) */
- s32i a2, a1, 0
-
callx4 a4
1: /* regs->areg[2] = return_value */
s32i a6, a2, PT_AREG2
bnez a3, 1f
- abi_ret(4)
+.Lsyscall_exit:
+ abi_ret_default
1:
- l32i a4, a1, 4
- l32i a3, a2, PT_SYSCALL
- s32i a4, a2, PT_SYSCALL
mov a6, a2
call4 do_syscall_trace_leave
- s32i a3, a2, PT_SYSCALL
- abi_ret(4)
+ abi_ret_default
ENDPROC(system_call)