[S390] Whitespace cleanup.
Huge s390 assembly files whitespace cleanup. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
committed by
Martin Schwidefsky
Martin Schwidefsky
parent
52149ba6b0
commit
25d83cbfaa
@ -4,8 +4,8 @@
|
||||
*
|
||||
* Copyright (C) IBM Corp. 1999,2006
|
||||
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
|
||||
* Hartmut Penner (hp@de.ibm.com),
|
||||
* Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
|
||||
* Hartmut Penner (hp@de.ibm.com),
|
||||
* Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
|
||||
* Heiko Carstens <heiko.carstens@de.ibm.com>
|
||||
*/
|
||||
|
||||
@ -24,29 +24,29 @@
|
||||
* Stack layout for the system_call stack entry.
|
||||
* The first few entries are identical to the user_regs_struct.
|
||||
*/
|
||||
SP_PTREGS = STACK_FRAME_OVERHEAD
|
||||
SP_ARGS = STACK_FRAME_OVERHEAD + __PT_ARGS
|
||||
SP_PSW = STACK_FRAME_OVERHEAD + __PT_PSW
|
||||
SP_R0 = STACK_FRAME_OVERHEAD + __PT_GPRS
|
||||
SP_R1 = STACK_FRAME_OVERHEAD + __PT_GPRS + 8
|
||||
SP_R2 = STACK_FRAME_OVERHEAD + __PT_GPRS + 16
|
||||
SP_R3 = STACK_FRAME_OVERHEAD + __PT_GPRS + 24
|
||||
SP_R4 = STACK_FRAME_OVERHEAD + __PT_GPRS + 32
|
||||
SP_R5 = STACK_FRAME_OVERHEAD + __PT_GPRS + 40
|
||||
SP_R6 = STACK_FRAME_OVERHEAD + __PT_GPRS + 48
|
||||
SP_R7 = STACK_FRAME_OVERHEAD + __PT_GPRS + 56
|
||||
SP_R8 = STACK_FRAME_OVERHEAD + __PT_GPRS + 64
|
||||
SP_R9 = STACK_FRAME_OVERHEAD + __PT_GPRS + 72
|
||||
SP_R10 = STACK_FRAME_OVERHEAD + __PT_GPRS + 80
|
||||
SP_R11 = STACK_FRAME_OVERHEAD + __PT_GPRS + 88
|
||||
SP_R12 = STACK_FRAME_OVERHEAD + __PT_GPRS + 96
|
||||
SP_R13 = STACK_FRAME_OVERHEAD + __PT_GPRS + 104
|
||||
SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 112
|
||||
SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 120
|
||||
SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2
|
||||
SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC
|
||||
SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP
|
||||
SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE
|
||||
SP_PTREGS = STACK_FRAME_OVERHEAD
|
||||
SP_ARGS = STACK_FRAME_OVERHEAD + __PT_ARGS
|
||||
SP_PSW = STACK_FRAME_OVERHEAD + __PT_PSW
|
||||
SP_R0 = STACK_FRAME_OVERHEAD + __PT_GPRS
|
||||
SP_R1 = STACK_FRAME_OVERHEAD + __PT_GPRS + 8
|
||||
SP_R2 = STACK_FRAME_OVERHEAD + __PT_GPRS + 16
|
||||
SP_R3 = STACK_FRAME_OVERHEAD + __PT_GPRS + 24
|
||||
SP_R4 = STACK_FRAME_OVERHEAD + __PT_GPRS + 32
|
||||
SP_R5 = STACK_FRAME_OVERHEAD + __PT_GPRS + 40
|
||||
SP_R6 = STACK_FRAME_OVERHEAD + __PT_GPRS + 48
|
||||
SP_R7 = STACK_FRAME_OVERHEAD + __PT_GPRS + 56
|
||||
SP_R8 = STACK_FRAME_OVERHEAD + __PT_GPRS + 64
|
||||
SP_R9 = STACK_FRAME_OVERHEAD + __PT_GPRS + 72
|
||||
SP_R10 = STACK_FRAME_OVERHEAD + __PT_GPRS + 80
|
||||
SP_R11 = STACK_FRAME_OVERHEAD + __PT_GPRS + 88
|
||||
SP_R12 = STACK_FRAME_OVERHEAD + __PT_GPRS + 96
|
||||
SP_R13 = STACK_FRAME_OVERHEAD + __PT_GPRS + 104
|
||||
SP_R14 = STACK_FRAME_OVERHEAD + __PT_GPRS + 112
|
||||
SP_R15 = STACK_FRAME_OVERHEAD + __PT_GPRS + 120
|
||||
SP_ORIG_R2 = STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2
|
||||
SP_ILC = STACK_FRAME_OVERHEAD + __PT_ILC
|
||||
SP_TRAP = STACK_FRAME_OVERHEAD + __PT_TRAP
|
||||
SP_SIZE = STACK_FRAME_OVERHEAD + __PT_SIZE
|
||||
|
||||
STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
|
||||
STACK_SIZE = 1 << STACK_SHIFT
|
||||
@ -71,14 +71,14 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
|
||||
#define TRACE_IRQS_OFF
|
||||
#endif
|
||||
|
||||
.macro STORE_TIMER lc_offset
|
||||
.macro STORE_TIMER lc_offset
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
stpt \lc_offset
|
||||
#endif
|
||||
.endm
|
||||
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
.macro UPDATE_VTIME lc_from,lc_to,lc_sum
|
||||
.macro UPDATE_VTIME lc_from,lc_to,lc_sum
|
||||
lg %r10,\lc_from
|
||||
slg %r10,\lc_to
|
||||
alg %r10,\lc_sum
|
||||
@ -94,7 +94,7 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
|
||||
* R15 - kernel stack pointer
|
||||
*/
|
||||
|
||||
.macro SAVE_ALL_BASE savearea
|
||||
.macro SAVE_ALL_BASE savearea
|
||||
stmg %r12,%r15,\savearea
|
||||
larl %r13,system_call
|
||||
.endm
|
||||
@ -139,8 +139,8 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
|
||||
.endm
|
||||
|
||||
.macro CREATE_STACK_FRAME psworg,savearea
|
||||
aghi %r15,-SP_SIZE # make room for registers & psw
|
||||
mvc SP_PSW(16,%r15),0(%r12) # move user PSW to stack
|
||||
aghi %r15,-SP_SIZE # make room for registers & psw
|
||||
mvc SP_PSW(16,%r15),0(%r12) # move user PSW to stack
|
||||
la %r12,\psworg
|
||||
stg %r2,SP_ORIG_R2(%r15) # store original content of gpr 2
|
||||
icm %r12,12,__LC_SVC_ILC
|
||||
@ -149,7 +149,7 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
|
||||
mvc SP_R12(32,%r15),\savearea # move %r12-%r15 to stack
|
||||
la %r12,0
|
||||
stg %r12,__SF_BACKCHAIN(%r15)
|
||||
.endm
|
||||
.endm
|
||||
|
||||
.macro RESTORE_ALL psworg,sync
|
||||
mvc \psworg(16),SP_PSW(%r15) # move user PSW to lowcore
|
||||
@ -168,29 +168,29 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \
|
||||
* Returns:
|
||||
* gpr2 = prev
|
||||
*/
|
||||
.globl __switch_to
|
||||
.globl __switch_to
|
||||
__switch_to:
|
||||
tm __THREAD_per+4(%r3),0xe8 # is the new process using per ?
|
||||
jz __switch_to_noper # if not we're fine
|
||||
stctg %c9,%c11,__SF_EMPTY(%r15)# We are using per stuff
|
||||
clc __THREAD_per(24,%r3),__SF_EMPTY(%r15)
|
||||
je __switch_to_noper # we got away without bashing TLB's
|
||||
lctlg %c9,%c11,__THREAD_per(%r3) # Nope we didn't
|
||||
stctg %c9,%c11,__SF_EMPTY(%r15)# We are using per stuff
|
||||
clc __THREAD_per(24,%r3),__SF_EMPTY(%r15)
|
||||
je __switch_to_noper # we got away without bashing TLB's
|
||||
lctlg %c9,%c11,__THREAD_per(%r3) # Nope we didn't
|
||||
__switch_to_noper:
|
||||
lg %r4,__THREAD_info(%r2) # get thread_info of prev
|
||||
lg %r4,__THREAD_info(%r2) # get thread_info of prev
|
||||
tm __TI_flags+7(%r4),_TIF_MCCK_PENDING # machine check pending?
|
||||
jz __switch_to_no_mcck
|
||||
ni __TI_flags+7(%r4),255-_TIF_MCCK_PENDING # clear flag in prev
|
||||
lg %r4,__THREAD_info(%r3) # get thread_info of next
|
||||
oi __TI_flags+7(%r4),_TIF_MCCK_PENDING # set it in next
|
||||
__switch_to_no_mcck:
|
||||
stmg %r6,%r15,__SF_GPRS(%r15)# store __switch_to registers of prev task
|
||||
stmg %r6,%r15,__SF_GPRS(%r15)# store __switch_to registers of prev task
|
||||
stg %r15,__THREAD_ksp(%r2) # store kernel stack to prev->tss.ksp
|
||||
lg %r15,__THREAD_ksp(%r3) # load kernel stack from next->tss.ksp
|
||||
lmg %r6,%r15,__SF_GPRS(%r15)# load __switch_to registers of next task
|
||||
lmg %r6,%r15,__SF_GPRS(%r15)# load __switch_to registers of next task
|
||||
stg %r3,__LC_CURRENT # __LC_CURRENT = current task struct
|
||||
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
|
||||
lg %r3,__THREAD_info(%r3) # load thread_info from task struct
|
||||
lg %r3,__THREAD_info(%r3) # load thread_info from task struct
|
||||
stg %r3,__LC_THREAD_INFO
|
||||
aghi %r3,STACK_SIZE
|
||||
stg %r3,__LC_KERNEL_STACK # __LC_KERNEL_STACK = new kernel stack
|
||||
@ -202,14 +202,14 @@ __critical_start:
|
||||
* are executed with interrupts enabled.
|
||||
*/
|
||||
|
||||
.globl system_call
|
||||
.globl system_call
|
||||
system_call:
|
||||
STORE_TIMER __LC_SYNC_ENTER_TIMER
|
||||
sysc_saveall:
|
||||
SAVE_ALL_BASE __LC_SAVE_AREA
|
||||
SAVE_ALL_SYNC __LC_SVC_OLD_PSW,__LC_SAVE_AREA
|
||||
CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
|
||||
llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore
|
||||
CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA
|
||||
llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
sysc_vtime:
|
||||
tm SP_PSW+1(%r15),0x01 # interrupting from user ?
|
||||
@ -222,45 +222,45 @@ sysc_update:
|
||||
#endif
|
||||
sysc_do_svc:
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
slag %r7,%r7,2 # *4 and test for svc 0
|
||||
slag %r7,%r7,2 # *4 and test for svc 0
|
||||
jnz sysc_nr_ok
|
||||
# svc 0: system call number in %r1
|
||||
cl %r1,BASED(.Lnr_syscalls)
|
||||
jnl sysc_nr_ok
|
||||
lgfr %r7,%r1 # clear high word in r1
|
||||
slag %r7,%r7,2 # svc 0: system call number in %r1
|
||||
lgfr %r7,%r1 # clear high word in r1
|
||||
slag %r7,%r7,2 # svc 0: system call number in %r1
|
||||
sysc_nr_ok:
|
||||
mvc SP_ARGS(8,%r15),SP_R7(%r15)
|
||||
sysc_do_restart:
|
||||
larl %r10,sys_call_table
|
||||
larl %r10,sys_call_table
|
||||
#ifdef CONFIG_COMPAT
|
||||
tm __TI_flags+5(%r9),(_TIF_31BIT>>16) # running in 31 bit mode ?
|
||||
jno sysc_noemu
|
||||
larl %r10,sys_call_table_emu # use 31 bit emulation system calls
|
||||
larl %r10,sys_call_table_emu # use 31 bit emulation system calls
|
||||
sysc_noemu:
|
||||
#endif
|
||||
tm __TI_flags+7(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
|
||||
lgf %r8,0(%r7,%r10) # load address of system call routine
|
||||
jnz sysc_tracesys
|
||||
basr %r14,%r8 # call sys_xxxx
|
||||
stg %r2,SP_R2(%r15) # store return value (change R2 on stack)
|
||||
# ATTENTION: check sys_execve_glue before
|
||||
# changing anything here !!
|
||||
lgf %r8,0(%r7,%r10) # load address of system call routine
|
||||
jnz sysc_tracesys
|
||||
basr %r14,%r8 # call sys_xxxx
|
||||
stg %r2,SP_R2(%r15) # store return value (change R2 on stack)
|
||||
# ATTENTION: check sys_execve_glue before
|
||||
# changing anything here !!
|
||||
|
||||
sysc_return:
|
||||
tm SP_PSW+1(%r15),0x01 # returning to user ?
|
||||
jno sysc_leave
|
||||
tm SP_PSW+1(%r15),0x01 # returning to user ?
|
||||
jno sysc_leave
|
||||
tm __TI_flags+7(%r9),_TIF_WORK_SVC
|
||||
jnz sysc_work # there is work to do (signals etc.)
|
||||
jnz sysc_work # there is work to do (signals etc.)
|
||||
sysc_leave:
|
||||
RESTORE_ALL __LC_RETURN_PSW,1
|
||||
RESTORE_ALL __LC_RETURN_PSW,1
|
||||
|
||||
#
|
||||
# recheck if there is more work to do
|
||||
#
|
||||
sysc_work_loop:
|
||||
tm __TI_flags+7(%r9),_TIF_WORK_SVC
|
||||
jz sysc_leave # there is no work to do
|
||||
jz sysc_leave # there is no work to do
|
||||
#
|
||||
# One of the work bits is on. Find out which one.
|
||||
#
|
||||
@ -279,25 +279,25 @@ sysc_work:
|
||||
|
||||
#
|
||||
# _TIF_NEED_RESCHED is set, call schedule
|
||||
#
|
||||
sysc_reschedule:
|
||||
larl %r14,sysc_work_loop
|
||||
jg schedule # return point is sysc_return
|
||||
#
|
||||
sysc_reschedule:
|
||||
larl %r14,sysc_work_loop
|
||||
jg schedule # return point is sysc_return
|
||||
|
||||
#
|
||||
# _TIF_MCCK_PENDING is set, call handler
|
||||
#
|
||||
sysc_mcck_pending:
|
||||
larl %r14,sysc_work_loop
|
||||
jg s390_handle_mcck # TIF bit will be cleared by handler
|
||||
jg s390_handle_mcck # TIF bit will be cleared by handler
|
||||
|
||||
#
|
||||
# _TIF_SIGPENDING or _TIF_RESTORE_SIGMASK is set, call do_signal
|
||||
#
|
||||
sysc_sigpending:
|
||||
sysc_sigpending:
|
||||
ni __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
brasl %r14,do_signal # call do_signal
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
brasl %r14,do_signal # call do_signal
|
||||
tm __TI_flags+7(%r9),_TIF_RESTART_SVC
|
||||
jo sysc_restart
|
||||
tm __TI_flags+7(%r9),_TIF_SINGLE_STEP
|
||||
@ -309,11 +309,11 @@ sysc_sigpending:
|
||||
#
|
||||
sysc_restart:
|
||||
ni __TI_flags+7(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
|
||||
lg %r7,SP_R2(%r15) # load new svc number
|
||||
slag %r7,%r7,2 # *4
|
||||
lg %r7,SP_R2(%r15) # load new svc number
|
||||
slag %r7,%r7,2 # *4
|
||||
mvc SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument
|
||||
lmg %r2,%r6,SP_R2(%r15) # load svc arguments
|
||||
j sysc_do_restart # restart svc
|
||||
lmg %r2,%r6,SP_R2(%r15) # load svc arguments
|
||||
j sysc_do_restart # restart svc
|
||||
|
||||
#
|
||||
# _TIF_SINGLE_STEP is set, call do_single_step
|
||||
@ -326,49 +326,48 @@ sysc_singlestep:
|
||||
larl %r14,sysc_return # load adr. of system return
|
||||
jg do_single_step # branch to do_sigtrap
|
||||
|
||||
|
||||
#
|
||||
# call syscall_trace before and after system call
|
||||
# special linkage: %r12 contains the return address for trace_svc
|
||||
#
|
||||
sysc_tracesys:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
la %r3,0
|
||||
srl %r7,2
|
||||
stg %r7,SP_R2(%r15)
|
||||
brasl %r14,syscall_trace
|
||||
stg %r7,SP_R2(%r15)
|
||||
brasl %r14,syscall_trace
|
||||
lghi %r0,NR_syscalls
|
||||
clg %r0,SP_R2(%r15)
|
||||
jnh sysc_tracenogo
|
||||
lg %r7,SP_R2(%r15) # strace might have changed the
|
||||
sll %r7,2 # system call
|
||||
lg %r7,SP_R2(%r15) # strace might have changed the
|
||||
sll %r7,2 # system call
|
||||
lgf %r8,0(%r7,%r10)
|
||||
sysc_tracego:
|
||||
lmg %r3,%r6,SP_R3(%r15)
|
||||
lg %r2,SP_ORIG_R2(%r15)
|
||||
basr %r14,%r8 # call sys_xxx
|
||||
stg %r2,SP_R2(%r15) # store return value
|
||||
lmg %r3,%r6,SP_R3(%r15)
|
||||
lg %r2,SP_ORIG_R2(%r15)
|
||||
basr %r14,%r8 # call sys_xxx
|
||||
stg %r2,SP_R2(%r15) # store return value
|
||||
sysc_tracenogo:
|
||||
tm __TI_flags+7(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
|
||||
jz sysc_return
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jz sysc_return
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
la %r3,1
|
||||
larl %r14,sysc_return # return point is sysc_return
|
||||
larl %r14,sysc_return # return point is sysc_return
|
||||
jg syscall_trace
|
||||
|
||||
#
|
||||
# a new process exits the kernel with ret_from_fork
|
||||
#
|
||||
.globl ret_from_fork
|
||||
.globl ret_from_fork
|
||||
ret_from_fork:
|
||||
lg %r13,__LC_SVC_NEW_PSW+8
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
tm SP_PSW+1(%r15),0x01 # forking a kernel thread ?
|
||||
jo 0f
|
||||
stg %r15,SP_R15(%r15) # store stack pointer for new kthread
|
||||
0: brasl %r14,schedule_tail
|
||||
0: brasl %r14,schedule_tail
|
||||
TRACE_IRQS_ON
|
||||
stosm 24(%r15),0x03 # reenable interrupts
|
||||
stosm 24(%r15),0x03 # reenable interrupts
|
||||
j sysc_return
|
||||
|
||||
#
|
||||
@ -377,78 +376,78 @@ ret_from_fork:
|
||||
# but are called with different parameter.
|
||||
# return-address is set up above
|
||||
#
|
||||
sys_clone_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys_clone # branch to sys_clone
|
||||
sys_clone_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys_clone # branch to sys_clone
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
sys32_clone_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys32_clone # branch to sys32_clone
|
||||
sys32_clone_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys32_clone # branch to sys32_clone
|
||||
#endif
|
||||
|
||||
sys_fork_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys_fork # branch to sys_fork
|
||||
sys_fork_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys_fork # branch to sys_fork
|
||||
|
||||
sys_vfork_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys_vfork # branch to sys_vfork
|
||||
sys_vfork_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg sys_vfork # branch to sys_vfork
|
||||
|
||||
sys_execve_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
lgr %r12,%r14 # save return address
|
||||
brasl %r14,sys_execve # call sys_execve
|
||||
ltgr %r2,%r2 # check if execve failed
|
||||
bnz 0(%r12) # it did fail -> store result in gpr2
|
||||
b 6(%r12) # SKIP STG 2,SP_R2(15) in
|
||||
# system_call/sysc_tracesys
|
||||
sys_execve_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
lgr %r12,%r14 # save return address
|
||||
brasl %r14,sys_execve # call sys_execve
|
||||
ltgr %r2,%r2 # check if execve failed
|
||||
bnz 0(%r12) # it did fail -> store result in gpr2
|
||||
b 6(%r12) # SKIP STG 2,SP_R2(15) in
|
||||
# system_call/sysc_tracesys
|
||||
#ifdef CONFIG_COMPAT
|
||||
sys32_execve_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
lgr %r12,%r14 # save return address
|
||||
brasl %r14,sys32_execve # call sys32_execve
|
||||
ltgr %r2,%r2 # check if execve failed
|
||||
bnz 0(%r12) # it did fail -> store result in gpr2
|
||||
b 6(%r12) # SKIP STG 2,SP_R2(15) in
|
||||
# system_call/sysc_tracesys
|
||||
sys32_execve_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
lgr %r12,%r14 # save return address
|
||||
brasl %r14,sys32_execve # call sys32_execve
|
||||
ltgr %r2,%r2 # check if execve failed
|
||||
bnz 0(%r12) # it did fail -> store result in gpr2
|
||||
b 6(%r12) # SKIP STG 2,SP_R2(15) in
|
||||
# system_call/sysc_tracesys
|
||||
#endif
|
||||
|
||||
sys_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys_sigreturn # branch to sys_sigreturn
|
||||
sys_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys_sigreturn # branch to sys_sigreturn
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
sys32_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys32_sigreturn # branch to sys32_sigreturn
|
||||
sys32_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys32_sigreturn # branch to sys32_sigreturn
|
||||
#endif
|
||||
|
||||
sys_rt_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys_rt_sigreturn # branch to sys_sigreturn
|
||||
sys_rt_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys_rt_sigreturn # branch to sys_sigreturn
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
sys32_rt_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys32_rt_sigreturn # branch to sys32_sigreturn
|
||||
sys32_rt_sigreturn_glue:
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys32_rt_sigreturn # branch to sys32_sigreturn
|
||||
#endif
|
||||
|
||||
sys_sigaltstack_glue:
|
||||
la %r4,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys_sigaltstack # branch to sys_sigreturn
|
||||
la %r4,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys_sigaltstack # branch to sys_sigreturn
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
sys32_sigaltstack_glue:
|
||||
la %r4,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys32_sigaltstack_wrapper # branch to sys_sigreturn
|
||||
la %r4,SP_PTREGS(%r15) # load pt_regs as parameter
|
||||
jg sys32_sigaltstack_wrapper # branch to sys_sigreturn
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Program check handler routine
|
||||
*/
|
||||
|
||||
.globl pgm_check_handler
|
||||
.globl pgm_check_handler
|
||||
pgm_check_handler:
|
||||
/*
|
||||
* First we need to check for a special case:
|
||||
@ -465,8 +464,8 @@ pgm_check_handler:
|
||||
*/
|
||||
STORE_TIMER __LC_SYNC_ENTER_TIMER
|
||||
SAVE_ALL_BASE __LC_SAVE_AREA
|
||||
tm __LC_PGM_INT_CODE+1,0x80 # check whether we got a per exception
|
||||
jnz pgm_per # got per exception -> special case
|
||||
tm __LC_PGM_INT_CODE+1,0x80 # check whether we got a per exception
|
||||
jnz pgm_per # got per exception -> special case
|
||||
SAVE_ALL_SYNC __LC_PGM_OLD_PSW,__LC_SAVE_AREA
|
||||
CREATE_STACK_FRAME __LC_PGM_OLD_PSW,__LC_SAVE_AREA
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
@ -478,29 +477,29 @@ pgm_check_handler:
|
||||
pgm_no_vtime:
|
||||
#endif
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
lgf %r3,__LC_PGM_ILC # load program interruption code
|
||||
lgf %r3,__LC_PGM_ILC # load program interruption code
|
||||
lghi %r8,0x7f
|
||||
ngr %r8,%r3
|
||||
pgm_do_call:
|
||||
sll %r8,3
|
||||
larl %r1,pgm_check_table
|
||||
lg %r1,0(%r8,%r1) # load address of handler routine
|
||||
la %r2,SP_PTREGS(%r15) # address of register-save area
|
||||
sll %r8,3
|
||||
larl %r1,pgm_check_table
|
||||
lg %r1,0(%r8,%r1) # load address of handler routine
|
||||
la %r2,SP_PTREGS(%r15) # address of register-save area
|
||||
larl %r14,sysc_return
|
||||
br %r1 # branch to interrupt-handler
|
||||
br %r1 # branch to interrupt-handler
|
||||
|
||||
#
|
||||
# handle per exception
|
||||
#
|
||||
pgm_per:
|
||||
tm __LC_PGM_OLD_PSW,0x40 # test if per event recording is on
|
||||
jnz pgm_per_std # ok, normal per event from user space
|
||||
tm __LC_PGM_OLD_PSW,0x40 # test if per event recording is on
|
||||
jnz pgm_per_std # ok, normal per event from user space
|
||||
# ok its one of the special cases, now we need to find out which one
|
||||
clc __LC_PGM_OLD_PSW(16),__LC_SVC_NEW_PSW
|
||||
je pgm_svcper
|
||||
clc __LC_PGM_OLD_PSW(16),__LC_SVC_NEW_PSW
|
||||
je pgm_svcper
|
||||
# no interesting special case, ignore PER event
|
||||
lmg %r12,%r15,__LC_SAVE_AREA
|
||||
lpswe __LC_PGM_OLD_PSW
|
||||
lpswe __LC_PGM_OLD_PSW
|
||||
|
||||
#
|
||||
# Normal per exception
|
||||
@ -524,9 +523,9 @@ pgm_no_vtime2:
|
||||
mvc __THREAD_per+__PER_address(8,%r1),__LC_PER_ADDRESS
|
||||
mvc __THREAD_per+__PER_access_id(1,%r1),__LC_PER_ACCESS_ID
|
||||
oi __TI_flags+7(%r9),_TIF_SINGLE_STEP # set TIF_SINGLE_STEP
|
||||
lgf %r3,__LC_PGM_ILC # load program interruption code
|
||||
lgf %r3,__LC_PGM_ILC # load program interruption code
|
||||
lghi %r8,0x7f
|
||||
ngr %r8,%r3 # clear per-event-bit and ilc
|
||||
ngr %r8,%r3 # clear per-event-bit and ilc
|
||||
je sysc_return
|
||||
j pgm_do_call
|
||||
|
||||
@ -544,7 +543,7 @@ pgm_svcper:
|
||||
mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
|
||||
pgm_no_vtime3:
|
||||
#endif
|
||||
llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore
|
||||
llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
lg %r1,__TI_task(%r9)
|
||||
mvc __THREAD_per+__PER_atmid(2,%r1),__LC_PER_ATMID
|
||||
@ -568,7 +567,7 @@ kernel_per:
|
||||
/*
|
||||
* IO interrupt handler routine
|
||||
*/
|
||||
.globl io_int_handler
|
||||
.globl io_int_handler
|
||||
io_int_handler:
|
||||
STORE_TIMER __LC_ASYNC_ENTER_TIMER
|
||||
stck __LC_INT_CLOCK
|
||||
@ -585,42 +584,42 @@ io_no_vtime:
|
||||
#endif
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
TRACE_IRQS_OFF
|
||||
la %r2,SP_PTREGS(%r15) # address of register-save area
|
||||
brasl %r14,do_IRQ # call standard irq handler
|
||||
la %r2,SP_PTREGS(%r15) # address of register-save area
|
||||
brasl %r14,do_IRQ # call standard irq handler
|
||||
TRACE_IRQS_ON
|
||||
|
||||
io_return:
|
||||
tm SP_PSW+1(%r15),0x01 # returning to user ?
|
||||
tm SP_PSW+1(%r15),0x01 # returning to user ?
|
||||
#ifdef CONFIG_PREEMPT
|
||||
jno io_preempt # no -> check for preemptive scheduling
|
||||
jno io_preempt # no -> check for preemptive scheduling
|
||||
#else
|
||||
jno io_leave # no-> skip resched & signal
|
||||
jno io_leave # no-> skip resched & signal
|
||||
#endif
|
||||
tm __TI_flags+7(%r9),_TIF_WORK_INT
|
||||
jnz io_work # there is work to do (signals etc.)
|
||||
jnz io_work # there is work to do (signals etc.)
|
||||
io_leave:
|
||||
RESTORE_ALL __LC_RETURN_PSW,0
|
||||
RESTORE_ALL __LC_RETURN_PSW,0
|
||||
io_done:
|
||||
|
||||
#ifdef CONFIG_PREEMPT
|
||||
io_preempt:
|
||||
icm %r0,15,__TI_precount(%r9)
|
||||
jnz io_leave
|
||||
icm %r0,15,__TI_precount(%r9)
|
||||
jnz io_leave
|
||||
# switch to kernel stack
|
||||
lg %r1,SP_R15(%r15)
|
||||
aghi %r1,-SP_SIZE
|
||||
mvc SP_PTREGS(__PT_SIZE,%r1),SP_PTREGS(%r15)
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1) # clear back chain
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1) # clear back chain
|
||||
lgr %r15,%r1
|
||||
io_resume_loop:
|
||||
tm __TI_flags+7(%r9),_TIF_NEED_RESCHED
|
||||
jno io_leave
|
||||
larl %r1,.Lc_pactive
|
||||
mvc __TI_precount(4,%r9),0(%r1)
|
||||
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
|
||||
brasl %r14,schedule # call schedule
|
||||
stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
|
||||
xc __TI_precount(4,%r9),__TI_precount(%r9)
|
||||
larl %r1,.Lc_pactive
|
||||
mvc __TI_precount(4,%r9),0(%r1)
|
||||
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
|
||||
brasl %r14,schedule # call schedule
|
||||
stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
|
||||
xc __TI_precount(4,%r9),__TI_precount(%r9)
|
||||
j io_resume_loop
|
||||
#endif
|
||||
|
||||
@ -631,7 +630,7 @@ io_work:
|
||||
lg %r1,__LC_KERNEL_STACK
|
||||
aghi %r1,-SP_SIZE
|
||||
mvc SP_PTREGS(__PT_SIZE,%r1),SP_PTREGS(%r15)
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1) # clear back chain
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1) # clear back chain
|
||||
lgr %r15,%r1
|
||||
#
|
||||
# One of the work bits is on. Find out which one.
|
||||
@ -656,11 +655,11 @@ io_mcck_pending:
|
||||
|
||||
#
|
||||
# _TIF_NEED_RESCHED is set, call schedule
|
||||
#
|
||||
io_reschedule:
|
||||
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
|
||||
brasl %r14,schedule # call scheduler
|
||||
stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
|
||||
#
|
||||
io_reschedule:
|
||||
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
|
||||
brasl %r14,schedule # call scheduler
|
||||
stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
|
||||
tm __TI_flags+7(%r9),_TIF_WORK_INT
|
||||
jz io_leave # there is no work to do
|
||||
j io_work_loop
|
||||
@ -668,17 +667,17 @@ io_reschedule:
|
||||
#
|
||||
# _TIF_SIGPENDING or _TIF_RESTORE_SIGMASK is set, call do_signal
|
||||
#
|
||||
io_sigpending:
|
||||
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
io_sigpending:
|
||||
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
brasl %r14,do_signal # call do_signal
|
||||
stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
|
||||
stnsm __SF_EMPTY(%r15),0xfc # disable I/O and ext. interrupts
|
||||
j io_work_loop
|
||||
|
||||
/*
|
||||
* External interrupt handler routine
|
||||
*/
|
||||
.globl ext_int_handler
|
||||
.globl ext_int_handler
|
||||
ext_int_handler:
|
||||
STORE_TIMER __LC_ASYNC_ENTER_TIMER
|
||||
stck __LC_INT_CLOCK
|
||||
@ -695,9 +694,9 @@ ext_no_vtime:
|
||||
#endif
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
TRACE_IRQS_OFF
|
||||
la %r2,SP_PTREGS(%r15) # address of register-save area
|
||||
llgh %r3,__LC_EXT_INT_CODE # get interruption code
|
||||
brasl %r14,do_extint
|
||||
la %r2,SP_PTREGS(%r15) # address of register-save area
|
||||
llgh %r3,__LC_EXT_INT_CODE # get interruption code
|
||||
brasl %r14,do_extint
|
||||
TRACE_IRQS_ON
|
||||
j io_return
|
||||
|
||||
@ -706,14 +705,14 @@ __critical_end:
|
||||
/*
|
||||
* Machine check handler routines
|
||||
*/
|
||||
.globl mcck_int_handler
|
||||
.globl mcck_int_handler
|
||||
mcck_int_handler:
|
||||
la %r1,4095 # revalidate r1
|
||||
spt __LC_CPU_TIMER_SAVE_AREA-4095(%r1) # revalidate cpu timer
|
||||
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
|
||||
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)# revalidate gprs
|
||||
SAVE_ALL_BASE __LC_SAVE_AREA+64
|
||||
la %r12,__LC_MCK_OLD_PSW
|
||||
tm __LC_MCCK_CODE,0x80 # system damage?
|
||||
tm __LC_MCCK_CODE,0x80 # system damage?
|
||||
jo mcck_int_main # yes -> rest of mcck code invalid
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
la %r14,4095
|
||||
@ -737,19 +736,19 @@ mcck_int_handler:
|
||||
#endif
|
||||
tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
|
||||
jno mcck_int_main # no -> skip cleanup critical
|
||||
tm __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
|
||||
tm __LC_MCK_OLD_PSW+1,0x01 # test problem state bit
|
||||
jnz mcck_int_main # from user -> load kernel stack
|
||||
clc __LC_MCK_OLD_PSW+8(8),BASED(.Lcritical_end)
|
||||
jhe mcck_int_main
|
||||
clc __LC_MCK_OLD_PSW+8(8),BASED(.Lcritical_start)
|
||||
clc __LC_MCK_OLD_PSW+8(8),BASED(.Lcritical_start)
|
||||
jl mcck_int_main
|
||||
brasl %r14,cleanup_critical
|
||||
brasl %r14,cleanup_critical
|
||||
mcck_int_main:
|
||||
lg %r14,__LC_PANIC_STACK # are we already on the panic stack?
|
||||
lg %r14,__LC_PANIC_STACK # are we already on the panic stack?
|
||||
slgr %r14,%r15
|
||||
srag %r14,%r14,PAGE_SHIFT
|
||||
jz 0f
|
||||
lg %r15,__LC_PANIC_STACK # load panic stack
|
||||
lg %r15,__LC_PANIC_STACK # load panic stack
|
||||
0: CREATE_STACK_FRAME __LC_MCK_OLD_PSW,__LC_SAVE_AREA+64
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
tm __LC_MCCK_CODE+2,0x08 # mwp of old psw valid?
|
||||
@ -764,7 +763,7 @@ mcck_no_vtime:
|
||||
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
brasl %r14,s390_do_machine_check
|
||||
tm SP_PSW+1(%r15),0x01 # returning to user ?
|
||||
tm SP_PSW+1(%r15),0x01 # returning to user ?
|
||||
jno mcck_return
|
||||
lg %r1,__LC_KERNEL_STACK # switch to kernel stack
|
||||
aghi %r1,-SP_SIZE
|
||||
@ -794,28 +793,28 @@ mcck_return:
|
||||
/*
|
||||
* Restart interruption handler, kick starter for additional CPUs
|
||||
*/
|
||||
.globl restart_int_handler
|
||||
.globl restart_int_handler
|
||||
restart_int_handler:
|
||||
lg %r15,__LC_SAVE_AREA+120 # load ksp
|
||||
lghi %r10,__LC_CREGS_SAVE_AREA
|
||||
lctlg %c0,%c15,0(%r10) # get new ctl regs
|
||||
lghi %r10,__LC_AREGS_SAVE_AREA
|
||||
lam %a0,%a15,0(%r10)
|
||||
lmg %r6,%r15,__SF_GPRS(%r15) # load registers from clone
|
||||
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
|
||||
jg start_secondary
|
||||
lg %r15,__LC_SAVE_AREA+120 # load ksp
|
||||
lghi %r10,__LC_CREGS_SAVE_AREA
|
||||
lctlg %c0,%c15,0(%r10) # get new ctl regs
|
||||
lghi %r10,__LC_AREGS_SAVE_AREA
|
||||
lam %a0,%a15,0(%r10)
|
||||
lmg %r6,%r15,__SF_GPRS(%r15) # load registers from clone
|
||||
stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
|
||||
jg start_secondary
|
||||
#else
|
||||
/*
|
||||
* If we do not run with SMP enabled, let the new CPU crash ...
|
||||
*/
|
||||
.globl restart_int_handler
|
||||
.globl restart_int_handler
|
||||
restart_int_handler:
|
||||
basr %r1,0
|
||||
basr %r1,0
|
||||
restart_base:
|
||||
lpswe restart_crash-restart_base(%r1)
|
||||
.align 8
|
||||
lpswe restart_crash-restart_base(%r1)
|
||||
.align 8
|
||||
restart_crash:
|
||||
.long 0x000a0000,0x00000000,0x00000000,0x00000000
|
||||
.long 0x000a0000,0x00000000,0x00000000,0x00000000
|
||||
restart_go:
|
||||
#endif
|
||||
|
||||
@ -836,9 +835,9 @@ stack_overflow:
|
||||
chi %r12,__LC_PGM_OLD_PSW
|
||||
je 0f
|
||||
la %r1,__LC_SAVE_AREA+32
|
||||
0: mvc SP_R12(32,%r15),0(%r1) # move %r12-%r15 to stack
|
||||
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) # clear back chain
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
0: mvc SP_R12(32,%r15),0(%r1) # move %r12-%r15 to stack
|
||||
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) # clear back chain
|
||||
la %r2,SP_PTREGS(%r15) # load pt_regs
|
||||
jg kernel_stack_overflow
|
||||
#endif
|
||||
|
||||
@ -941,10 +940,10 @@ cleanup_novtime:
|
||||
cleanup_system_call_insn:
|
||||
.quad sysc_saveall
|
||||
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
||||
.quad system_call
|
||||
.quad sysc_vtime
|
||||
.quad sysc_stime
|
||||
.quad sysc_update
|
||||
.quad system_call
|
||||
.quad sysc_vtime
|
||||
.quad sysc_stime
|
||||
.quad sysc_update
|
||||
#endif
|
||||
|
||||
cleanup_sysc_return:
|
||||
@ -1010,21 +1009,21 @@ cleanup_io_leave_insn:
|
||||
/*
|
||||
* Integer constants
|
||||
*/
|
||||
.align 4
|
||||
.align 4
|
||||
.Lconst:
|
||||
.Lc_pactive: .long PREEMPT_ACTIVE
|
||||
.Lnr_syscalls: .long NR_syscalls
|
||||
.L0x0130: .short 0x130
|
||||
.L0x0140: .short 0x140
|
||||
.L0x0150: .short 0x150
|
||||
.L0x0160: .short 0x160
|
||||
.L0x0170: .short 0x170
|
||||
.Lc_pactive: .long PREEMPT_ACTIVE
|
||||
.Lnr_syscalls: .long NR_syscalls
|
||||
.L0x0130: .short 0x130
|
||||
.L0x0140: .short 0x140
|
||||
.L0x0150: .short 0x150
|
||||
.L0x0160: .short 0x160
|
||||
.L0x0170: .short 0x170
|
||||
.Lcritical_start:
|
||||
.quad __critical_start
|
||||
.quad __critical_start
|
||||
.Lcritical_end:
|
||||
.quad __critical_end
|
||||
.quad __critical_end
|
||||
|
||||
.section .rodata, "a"
|
||||
.section .rodata, "a"
|
||||
#define SYSCALL(esa,esame,emu) .long esame
|
||||
sys_call_table:
|
||||
#include "syscalls.S"
|
||||
|
||||
Reference in New Issue
Block a user