diff options
Diffstat (limited to 'arch/arc/kernel/entry.S')
| -rw-r--r-- | arch/arc/kernel/entry.S | 35 |
1 files changed, 6 insertions, 29 deletions
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index ef6800b..0c6d664 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -393,12 +393,14 @@ ARC_ENTRY EV_TLBProtV #ifdef CONFIG_ARC_MISALIGN_ACCESS SAVE_CALLEE_SAVED_USER mov r3, sp ; callee_regs -#endif bl do_misaligned_access -#ifdef CONFIG_ARC_MISALIGN_ACCESS - DISCARD_CALLEE_SAVED_USER + ; TBD: optimize - do this only if a callee reg was involved + ; either a dst of emulated LD/ST or src with address-writeback + RESTORE_CALLEE_SAVED_USER +#else + bl do_misaligned_error #endif b ret_from_exception @@ -452,7 +454,7 @@ tracesys: ; using ERET won't work since next-PC has already committed lr r12, [efa] GET_CURR_TASK_FIELD_PTR TASK_THREAD, r11 - st r12, [r11, THREAD_FAULT_ADDR] + st r12, [r11, THREAD_FAULT_ADDR] ; thread.fault_address ; PRE Sys Call Ptrace hook mov r0, sp ; pt_regs needed @@ -792,31 +794,6 @@ ARC_EXIT ret_from_fork ;################### Special Sys Call Wrappers ########################## -; TBD: call do_fork directly from here -ARC_ENTRY sys_fork_wrapper - SAVE_CALLEE_SAVED_USER - bl @sys_fork - DISCARD_CALLEE_SAVED_USER - - GET_CURR_THR_INFO_FLAGS r10 - btst r10, TIF_SYSCALL_TRACE - bnz tracesys_exit - - b ret_from_system_call -ARC_EXIT sys_fork_wrapper - -ARC_ENTRY sys_vfork_wrapper - SAVE_CALLEE_SAVED_USER - bl @sys_vfork - DISCARD_CALLEE_SAVED_USER - - GET_CURR_THR_INFO_FLAGS r10 - btst r10, TIF_SYSCALL_TRACE - bnz tracesys_exit - - b ret_from_system_call -ARC_EXIT sys_vfork_wrapper - ARC_ENTRY sys_clone_wrapper SAVE_CALLEE_SAVED_USER bl @sys_clone |