Commit 02f884ed authored by Al Viro's avatar Al Viro Committed by Ralf Baechle
Browse files

MIPS: Merge the identical "return from syscall" per-ABI code 



No need to keep 4 copies of that stuff; merged and taken to
entry.S, unused public symbols there killed off.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 0b894bd8

arch/mips/kernel/entry.S

+9 −3
Original line number Diff line number Diff line
@@ -77,7 +77,7 @@ FEXPORT(syscall_exit) 
	and	t0, a2, t0

	bnez	t0, syscall_exit_work



FEXPORT(restore_all)			# restore full frame

restore_all:				# restore full frame

#ifdef CONFIG_MIPS_MT_SMTC

#ifdef CONFIG_MIPS_MT_SMTC_IM_BACKSTOP

/* Re-arm any temporarily masked interrupts not explicitly "acked" */
@@ -117,7 +117,7 @@ FEXPORT(restore_all) # restore full frame 
	RESTORE_TEMP

	RESTORE_AT

	RESTORE_STATIC

FEXPORT(restore_partial)		# restore partial frame

restore_partial:		# restore partial frame

#ifdef CONFIG_TRACE_IRQFLAGS

	SAVE_STATIC

	SAVE_AT
@@ -164,7 +164,13 @@ work_notifysig: # deal with pending signals and 
	jal	do_notify_resume	# a2 already loaded

	j	resume_userspace



FEXPORT(syscall_exit_work_partial)

FEXPORT(syscall_exit_partial)

	local_irq_disable		# make sure need_resched doesn't

					# change between and return

	LONG_L	a2, TI_FLAGS($28)	# current->work

	li	t0, _TIF_ALLWORK_MASK

	and	t0, a2

	beqz	t0, restore_partial

	SAVE_STATIC

syscall_exit_work:

	LONG_L	t0, PT_STATUS(sp)		# returning to kernel mode?

arch/mips/kernel/scall32-o32.S

+1 −12
Original line number Diff line number Diff line
@@ -69,18 +69,7 @@ stack_done: 
1:	sw	v0, PT_R2(sp)		# result



o32_syscall_exit:

	local_irq_disable		# make sure need_resched and

					# signals dont change between

					# sampling and return

	lw	a2, TI_FLAGS($28)	# current->work

	li	t0, _TIF_ALLWORK_MASK

	and	t0, a2

	bnez	t0, o32_syscall_exit_work



	j	restore_partial



o32_syscall_exit_work:

	j	syscall_exit_work_partial

	j	syscall_exit_partial



/* ------------------------------------------------------------------------ */

arch/mips/kernel/scall64-64.S

+1 −12
Original line number Diff line number Diff line
@@ -72,18 +72,7 @@ NESTED(handle_sys64, PT_SIZE, sp) 
1:	sd	v0, PT_R2(sp)		# result



n64_syscall_exit:

	local_irq_disable		# make sure need_resched and

					# signals dont change between

					# sampling and return

	LONG_L	a2, TI_FLAGS($28)	# current->work

	li	t0, _TIF_ALLWORK_MASK

	and	t0, a2, t0

	bnez	t0, n64_syscall_exit_work



	j	restore_partial



n64_syscall_exit_work:

	j	syscall_exit_work_partial

	j	syscall_exit_partial



/* ------------------------------------------------------------------------ */

arch/mips/kernel/scall64-n32.S

+1 −12
Original line number Diff line number Diff line
@@ -70,18 +70,7 @@ NESTED(handle_sysn32, PT_SIZE, sp) 
	sd	t1, PT_R0(sp)		# save it for syscall restarting

1:	sd	v0, PT_R2(sp)		# result



	local_irq_disable		# make sure need_resched and

					# signals dont change between

					# sampling and return

	LONG_L  a2, TI_FLAGS($28)	# current->work

	li	t0, _TIF_ALLWORK_MASK

	and	t0, a2, t0

	bnez	t0, n32_syscall_exit_work



	j	restore_partial



n32_syscall_exit_work:

	j	syscall_exit_work_partial

	j	syscall_exit_partial



/* ------------------------------------------------------------------------ */

arch/mips/kernel/scall64-o32.S

+1 −12
Original line number Diff line number Diff line
@@ -99,18 +99,7 @@ NESTED(handle_sys, PT_SIZE, sp) 
1:	sd	v0, PT_R2(sp)		# result



o32_syscall_exit:

	local_irq_disable		# make need_resched and

					# signals dont change between

					# sampling and return

	LONG_L	a2, TI_FLAGS($28)

	li	t0, _TIF_ALLWORK_MASK

	and	t0, a2, t0

	bnez	t0, o32_syscall_exit_work



	j	restore_partial



o32_syscall_exit_work:

	j	syscall_exit_work_partial

	j	syscall_exit_partial



/* ------------------------------------------------------------------------ */