diff options
Diffstat (limited to 'arch/xtensa/kernel/entry.S')
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 45 |
1 files changed, 19 insertions, 26 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 9cbc380e9572..e50f5124dc6f 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -364,7 +364,7 @@ common_exception: s32i a2, a1, PT_DEBUGCAUSE s32i a3, a1, PT_PC - movi a2, -1 + movi a2, NO_SYSCALL rsr a3, excvaddr s32i a2, a1, PT_SYSCALL movi a2, 0 @@ -1022,25 +1022,6 @@ ENDPROC(fast_alloca) * excsave_1: dispatch table */ -ENTRY(fast_syscall_kernel) - - /* Skip syscall. */ - - rsr a0, epc1 - addi a0, a0, 3 - wsr a0, epc1 - - l32i a0, a2, PT_DEPC - bgeui a0, VALID_DOUBLE_EXCEPTION_ADDRESS, fast_syscall_unrecoverable - - rsr a0, depc # get syscall-nr - _beqz a0, fast_syscall_spill_registers - _beqi a0, __NR_xtensa, fast_syscall_xtensa - - j kernel_exception - -ENDPROC(fast_syscall_kernel) - ENTRY(fast_syscall_user) /* Skip syscall. */ @@ -1865,20 +1846,28 @@ ENTRY(system_call) /* regs->syscall = regs->areg[2] */ - l32i a3, a2, PT_AREG2 + l32i a7, a2, PT_AREG2 + s32i a7, a2, PT_SYSCALL + + GET_THREAD_INFO(a4, a1) + l32i a3, a4, TI_FLAGS + movi a4, _TIF_WORK_MASK + and a3, a3, a4 + beqz a3, 1f + mov a6, a2 - s32i a3, a2, PT_SYSCALL call4 do_syscall_trace_enter - mov a3, a6 + l32i a7, a2, PT_SYSCALL +1: /* syscall = sys_call_table[syscall_nr] */ movi a4, sys_call_table - movi a5, __NR_syscall_count + movi a5, __NR_syscalls movi a6, -ENOSYS - bgeu a3, a5, 1f + bgeu a7, a5, 1f - addx4 a4, a3, a4 + addx4 a4, a7, a4 l32i a4, a4, 0 movi a5, sys_ni_syscall; beq a4, a5, 1f @@ -1900,6 +1889,10 @@ ENTRY(system_call) 1: /* regs->areg[2] = return_value */ s32i a6, a2, PT_AREG2 + bnez a3, 1f + retw + +1: mov a6, a2 call4 do_syscall_trace_leave retw |