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https://github.com/FEX-Emu/linux.git
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s390: use local symbol names in entry[64].S
To improve the output of the perf tool hide most of the symbols from entry[64].S by using the '.L' prefix. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
parent
7490daf01f
commit
86ed42f401
@ -53,7 +53,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
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.macro TRACE_IRQS_ON
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#ifdef CONFIG_TRACE_IRQFLAGS
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basr %r2,%r0
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l %r1,BASED(.Lhardirqs_on)
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l %r1,BASED(.Lc_hardirqs_on)
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basr %r14,%r1 # call trace_hardirqs_on_caller
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#endif
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.endm
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@ -61,7 +61,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
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.macro TRACE_IRQS_OFF
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#ifdef CONFIG_TRACE_IRQFLAGS
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basr %r2,%r0
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l %r1,BASED(.Lhardirqs_off)
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l %r1,BASED(.Lc_hardirqs_off)
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basr %r14,%r1 # call trace_hardirqs_off_caller
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#endif
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.endm
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@ -70,7 +70,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
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#ifdef CONFIG_LOCKDEP
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tm __PT_PSW+1(%r11),0x01 # returning to user ?
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jz .+10
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l %r1,BASED(.Llockdep_sys_exit)
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l %r1,BASED(.Lc_lockdep_sys_exit)
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basr %r14,%r1 # call lockdep_sys_exit
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#endif
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.endm
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@ -87,8 +87,8 @@ _PIF_WORK = (_PIF_PER_TRAP)
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tmh %r8,0x0001 # interrupting from user ?
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jnz 1f
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lr %r14,%r9
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sl %r14,BASED(.Lcritical_start)
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cl %r14,BASED(.Lcritical_length)
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sl %r14,BASED(.Lc_critical_start)
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cl %r14,BASED(.Lc_critical_length)
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jhe 0f
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la %r11,\savearea # inside critical section, do cleanup
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bras %r14,cleanup_critical
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@ -162,7 +162,7 @@ ENTRY(__switch_to)
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lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
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br %r14
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__critical_start:
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.L__critical_start:
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/*
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* SVC interrupt handler routine. System calls are synchronous events and
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* are executed with interrupts enabled.
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@ -170,145 +170,145 @@ __critical_start:
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ENTRY(system_call)
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stpt __LC_SYNC_ENTER_TIMER
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sysc_stm:
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.Lsysc_stm:
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stm %r8,%r15,__LC_SAVE_AREA_SYNC
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l %r12,__LC_THREAD_INFO
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l %r13,__LC_SVC_NEW_PSW+4
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lhi %r14,_PIF_SYSCALL
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sysc_per:
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.Lsysc_per:
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l %r15,__LC_KERNEL_STACK
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la %r11,STACK_FRAME_OVERHEAD(%r15) # pointer to pt_regs
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sysc_vtime:
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.Lsysc_vtime:
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UPDATE_VTIME %r8,%r9,__LC_SYNC_ENTER_TIMER
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stm %r0,%r7,__PT_R0(%r11)
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mvc __PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
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mvc __PT_PSW(8,%r11),__LC_SVC_OLD_PSW
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mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
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st %r14,__PT_FLAGS(%r11)
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sysc_do_svc:
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.Lsysc_do_svc:
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l %r10,__TI_sysc_table(%r12) # 31 bit system call table
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lh %r8,__PT_INT_CODE+2(%r11)
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sla %r8,2 # shift and test for svc0
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jnz sysc_nr_ok
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jnz .Lsysc_nr_ok
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# svc 0: system call number in %r1
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cl %r1,BASED(.Lnr_syscalls)
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jnl sysc_nr_ok
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jnl .Lsysc_nr_ok
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sth %r1,__PT_INT_CODE+2(%r11)
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lr %r8,%r1
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sla %r8,2
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sysc_nr_ok:
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.Lsysc_nr_ok:
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xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
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st %r2,__PT_ORIG_GPR2(%r11)
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st %r7,STACK_FRAME_OVERHEAD(%r15)
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l %r9,0(%r8,%r10) # get system call addr.
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tm __TI_flags+3(%r12),_TIF_TRACE
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jnz sysc_tracesys
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jnz .Lsysc_tracesys
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basr %r14,%r9 # call sys_xxxx
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st %r2,__PT_R2(%r11) # store return value
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sysc_return:
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.Lsysc_return:
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LOCKDEP_SYS_EXIT
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sysc_tif:
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.Lsysc_tif:
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tm __PT_PSW+1(%r11),0x01 # returning to user ?
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jno sysc_restore
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jno .Lsysc_restore
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tm __PT_FLAGS+3(%r11),_PIF_WORK
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jnz sysc_work
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jnz .Lsysc_work
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tm __TI_flags+3(%r12),_TIF_WORK
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jnz sysc_work # check for thread work
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jnz .Lsysc_work # check for thread work
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tm __LC_CPU_FLAGS+3,_CIF_WORK
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jnz sysc_work
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sysc_restore:
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jnz .Lsysc_work
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.Lsysc_restore:
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mvc __LC_RETURN_PSW(8),__PT_PSW(%r11)
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stpt __LC_EXIT_TIMER
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lm %r0,%r15,__PT_R0(%r11)
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lpsw __LC_RETURN_PSW
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sysc_done:
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.Lsysc_done:
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#
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# One of the work bits is on. Find out which one.
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#
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sysc_work:
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.Lsysc_work:
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tm __LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
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jo sysc_mcck_pending
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jo .Lsysc_mcck_pending
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tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
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jo sysc_reschedule
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jo .Lsysc_reschedule
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tm __PT_FLAGS+3(%r11),_PIF_PER_TRAP
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jo sysc_singlestep
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jo .Lsysc_singlestep
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tm __TI_flags+3(%r12),_TIF_SIGPENDING
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jo sysc_sigpending
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jo .Lsysc_sigpending
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tm __TI_flags+3(%r12),_TIF_NOTIFY_RESUME
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jo sysc_notify_resume
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jo .Lsysc_notify_resume
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tm __LC_CPU_FLAGS+3,_CIF_ASCE
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jo sysc_uaccess
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j sysc_return # beware of critical section cleanup
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jo .Lsysc_uaccess
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j .Lsysc_return # beware of critical section cleanup
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#
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# _TIF_NEED_RESCHED is set, call schedule
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#
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sysc_reschedule:
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l %r1,BASED(.Lschedule)
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la %r14,BASED(sysc_return)
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.Lsysc_reschedule:
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l %r1,BASED(.Lc_schedule)
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la %r14,BASED(.Lsysc_return)
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br %r1 # call schedule
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#
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# _CIF_MCCK_PENDING is set, call handler
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#
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sysc_mcck_pending:
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l %r1,BASED(.Lhandle_mcck)
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la %r14,BASED(sysc_return)
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.Lsysc_mcck_pending:
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l %r1,BASED(.Lc_handle_mcck)
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la %r14,BASED(.Lsysc_return)
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br %r1 # TIF bit will be cleared by handler
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#
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# _CIF_ASCE is set, load user space asce
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#
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sysc_uaccess:
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.Lsysc_uaccess:
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ni __LC_CPU_FLAGS+3,255-_CIF_ASCE
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lctl %c1,%c1,__LC_USER_ASCE # load primary asce
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j sysc_return
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j .Lsysc_return
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#
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# _TIF_SIGPENDING is set, call do_signal
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#
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sysc_sigpending:
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.Lsysc_sigpending:
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lr %r2,%r11 # pass pointer to pt_regs
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l %r1,BASED(.Ldo_signal)
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l %r1,BASED(.Lc_do_signal)
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basr %r14,%r1 # call do_signal
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tm __PT_FLAGS+3(%r11),_PIF_SYSCALL
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jno sysc_return
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jno .Lsysc_return
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lm %r2,%r7,__PT_R2(%r11) # load svc arguments
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l %r10,__TI_sysc_table(%r12) # 31 bit system call table
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xr %r8,%r8 # svc 0 returns -ENOSYS
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clc __PT_INT_CODE+2(2,%r11),BASED(.Lnr_syscalls+2)
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jnl sysc_nr_ok # invalid svc number -> do svc 0
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jnl .Lsysc_nr_ok # invalid svc number -> do svc 0
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lh %r8,__PT_INT_CODE+2(%r11) # load new svc number
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sla %r8,2
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j sysc_nr_ok # restart svc
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j .Lsysc_nr_ok # restart svc
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#
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# _TIF_NOTIFY_RESUME is set, call do_notify_resume
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#
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sysc_notify_resume:
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.Lsysc_notify_resume:
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lr %r2,%r11 # pass pointer to pt_regs
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l %r1,BASED(.Ldo_notify_resume)
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la %r14,BASED(sysc_return)
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l %r1,BASED(.Lc_do_notify_resume)
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la %r14,BASED(.Lsysc_return)
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br %r1 # call do_notify_resume
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#
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# _PIF_PER_TRAP is set, call do_per_trap
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#
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sysc_singlestep:
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.Lsysc_singlestep:
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ni __PT_FLAGS+3(%r11),255-_PIF_PER_TRAP
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lr %r2,%r11 # pass pointer to pt_regs
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l %r1,BASED(.Ldo_per_trap)
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la %r14,BASED(sysc_return)
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l %r1,BASED(.Lc_do_per_trap)
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la %r14,BASED(.Lsysc_return)
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br %r1 # call do_per_trap
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#
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# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
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# and after the system call
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#
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sysc_tracesys:
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l %r1,BASED(.Ltrace_enter)
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.Lsysc_tracesys:
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l %r1,BASED(.Lc_trace_enter)
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lr %r2,%r11 # pass pointer to pt_regs
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la %r3,0
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xr %r0,%r0
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@ -316,22 +316,22 @@ sysc_tracesys:
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st %r0,__PT_R2(%r11)
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basr %r14,%r1 # call do_syscall_trace_enter
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cl %r2,BASED(.Lnr_syscalls)
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jnl sysc_tracenogo
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jnl .Lsysc_tracenogo
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lr %r8,%r2
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sll %r8,2
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l %r9,0(%r8,%r10)
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sysc_tracego:
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.Lsysc_tracego:
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lm %r3,%r7,__PT_R3(%r11)
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st %r7,STACK_FRAME_OVERHEAD(%r15)
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l %r2,__PT_ORIG_GPR2(%r11)
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basr %r14,%r9 # call sys_xxx
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st %r2,__PT_R2(%r11) # store return value
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sysc_tracenogo:
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.Lsysc_tracenogo:
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tm __TI_flags+3(%r12),_TIF_TRACE
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jz sysc_return
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l %r1,BASED(.Ltrace_exit)
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jz .Lsysc_return
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l %r1,BASED(.Lc_trace_exit)
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lr %r2,%r11 # pass pointer to pt_regs
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la %r14,BASED(sysc_return)
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la %r14,BASED(.Lsysc_return)
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br %r1 # call do_syscall_trace_exit
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#
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@ -341,18 +341,18 @@ ENTRY(ret_from_fork)
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la %r11,STACK_FRAME_OVERHEAD(%r15)
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l %r12,__LC_THREAD_INFO
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l %r13,__LC_SVC_NEW_PSW+4
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l %r1,BASED(.Lschedule_tail)
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l %r1,BASED(.Lc_schedule_tail)
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basr %r14,%r1 # call schedule_tail
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TRACE_IRQS_ON
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ssm __LC_SVC_NEW_PSW # reenable interrupts
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tm __PT_PSW+1(%r11),0x01 # forking a kernel thread ?
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jne sysc_tracenogo
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jne .Lsysc_tracenogo
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# it's a kernel thread
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lm %r9,%r10,__PT_R9(%r11) # load gprs
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ENTRY(kernel_thread_starter)
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la %r2,0(%r10)
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basr %r14,%r9
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j sysc_tracenogo
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j .Lsysc_tracenogo
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/*
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* Program check handler routine
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@ -369,7 +369,7 @@ ENTRY(pgm_check_handler)
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tmh %r8,0x4000 # PER bit set in old PSW ?
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jnz 0f # -> enabled, can't be a double fault
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tm __LC_PGM_ILC+3,0x80 # check for per exception
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jnz pgm_svcper # -> single stepped svc
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jnz .Lpgm_svcper # -> single stepped svc
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0: CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
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ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
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j 2f
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@ -386,42 +386,42 @@ ENTRY(pgm_check_handler)
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jz 0f
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l %r1,__TI_task(%r12)
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tmh %r8,0x0001 # kernel per event ?
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jz pgm_kprobe
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jz .Lpgm_kprobe
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oi __PT_FLAGS+3(%r11),_PIF_PER_TRAP
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mvc __THREAD_per_address(4,%r1),__LC_PER_ADDRESS
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mvc __THREAD_per_cause(2,%r1),__LC_PER_CODE
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mvc __THREAD_per_paid(1,%r1),__LC_PER_ACCESS_ID
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0: REENABLE_IRQS
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xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
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l %r1,BASED(.Ljump_table)
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l %r1,BASED(.Lc_jump_table)
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la %r10,0x7f
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n %r10,__PT_INT_CODE(%r11)
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je sysc_return
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je .Lsysc_return
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sll %r10,2
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l %r1,0(%r10,%r1) # load address of handler routine
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lr %r2,%r11 # pass pointer to pt_regs
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basr %r14,%r1 # branch to interrupt-handler
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j sysc_return
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j .Lsysc_return
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#
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# PER event in supervisor state, must be kprobes
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#
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pgm_kprobe:
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.Lpgm_kprobe:
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REENABLE_IRQS
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xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
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l %r1,BASED(.Ldo_per_trap)
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l %r1,BASED(.Lc_do_per_trap)
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lr %r2,%r11 # pass pointer to pt_regs
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basr %r14,%r1 # call do_per_trap
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j sysc_return
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j .Lsysc_return
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#
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# single stepped system call
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#
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pgm_svcper:
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.Lpgm_svcper:
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mvc __LC_RETURN_PSW(4),__LC_SVC_NEW_PSW
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mvc __LC_RETURN_PSW+4(4),BASED(.Lsysc_per)
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mvc __LC_RETURN_PSW+4(4),BASED(.Lc_sysc_per)
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lhi %r14,_PIF_SYSCALL | _PIF_PER_TRAP
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lpsw __LC_RETURN_PSW # branch to sysc_per and enable irqs
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lpsw __LC_RETURN_PSW # branch to .Lsysc_per and enable irqs
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/*
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* IO interrupt handler routine
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@ -435,9 +435,9 @@ ENTRY(io_int_handler)
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l %r13,__LC_SVC_NEW_PSW+4
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lm %r8,%r9,__LC_IO_OLD_PSW
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tmh %r8,0x0001 # interrupting from user ?
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jz io_skip
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jz .Lio_skip
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UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
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io_skip:
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.Lio_skip:
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SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
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stm %r0,%r7,__PT_R0(%r11)
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mvc __PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
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@ -446,35 +446,35 @@ io_skip:
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xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
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TRACE_IRQS_OFF
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xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
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io_loop:
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l %r1,BASED(.Ldo_IRQ)
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.Lio_loop:
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l %r1,BASED(.Lc_do_IRQ)
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lr %r2,%r11 # pass pointer to pt_regs
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lhi %r3,IO_INTERRUPT
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tm __PT_INT_CODE+8(%r11),0x80 # adapter interrupt ?
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jz io_call
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jz .Lio_call
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lhi %r3,THIN_INTERRUPT
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io_call:
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.Lio_call:
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basr %r14,%r1 # call do_IRQ
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tm __LC_MACHINE_FLAGS+2,0x10 # MACHINE_FLAG_LPAR
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jz io_return
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jz .Lio_return
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tpi 0
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jz io_return
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jz .Lio_return
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mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
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j io_loop
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io_return:
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j .Lio_loop
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.Lio_return:
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LOCKDEP_SYS_EXIT
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TRACE_IRQS_ON
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io_tif:
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.Lio_tif:
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tm __TI_flags+3(%r12),_TIF_WORK
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jnz io_work # there is work to do (signals etc.)
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jnz .Lio_work # there is work to do (signals etc.)
|
||||
tm __LC_CPU_FLAGS+3,_CIF_WORK
|
||||
jnz io_work
|
||||
io_restore:
|
||||
jnz .Lio_work
|
||||
.Lio_restore:
|
||||
mvc __LC_RETURN_PSW(8),__PT_PSW(%r11)
|
||||
stpt __LC_EXIT_TIMER
|
||||
lm %r0,%r15,__PT_R0(%r11)
|
||||
lpsw __LC_RETURN_PSW
|
||||
io_done:
|
||||
.Lio_done:
|
||||
|
||||
#
|
||||
# There is work todo, find out in which context we have been interrupted:
|
||||
@ -483,15 +483,15 @@ io_done:
|
||||
# the preemption counter and if it is zero call preempt_schedule_irq
|
||||
# Before any work can be done, a switch to the kernel stack is required.
|
||||
#
|
||||
io_work:
|
||||
.Lio_work:
|
||||
tm __PT_PSW+1(%r11),0x01 # returning to user ?
|
||||
jo io_work_user # yes -> do resched & signal
|
||||
jo .Lio_work_user # yes -> do resched & signal
|
||||
#ifdef CONFIG_PREEMPT
|
||||
# check for preemptive scheduling
|
||||
icm %r0,15,__TI_precount(%r12)
|
||||
jnz io_restore # preemption disabled
|
||||
jnz .Lio_restore # preemption disabled
|
||||
tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
|
||||
jno io_restore
|
||||
jno .Lio_restore
|
||||
# switch to kernel stack
|
||||
l %r1,__PT_R15(%r11)
|
||||
ahi %r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
|
||||
@ -499,20 +499,20 @@ io_work:
|
||||
xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
|
||||
la %r11,STACK_FRAME_OVERHEAD(%r1)
|
||||
lr %r15,%r1
|
||||
# TRACE_IRQS_ON already done at io_return, call
|
||||
# TRACE_IRQS_ON already done at .Lio_return, call
|
||||
# TRACE_IRQS_OFF to keep things symmetrical
|
||||
TRACE_IRQS_OFF
|
||||
l %r1,BASED(.Lpreempt_irq)
|
||||
l %r1,BASED(.Lc_preempt_irq)
|
||||
basr %r14,%r1 # call preempt_schedule_irq
|
||||
j io_return
|
||||
j .Lio_return
|
||||
#else
|
||||
j io_restore
|
||||
j .Lio_restore
|
||||
#endif
|
||||
|
||||
#
|
||||
# Need to do work before returning to userspace, switch to kernel stack
|
||||
#
|
||||
io_work_user:
|
||||
.Lio_work_user:
|
||||
l %r1,__LC_KERNEL_STACK
|
||||
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
|
||||
xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
|
||||
@ -522,74 +522,74 @@ io_work_user:
|
||||
#
|
||||
# One of the work bits is on. Find out which one.
|
||||
#
|
||||
io_work_tif:
|
||||
.Lio_work_tif:
|
||||
tm __LC_CPU_FLAGS+3(%r12),_CIF_MCCK_PENDING
|
||||
jo io_mcck_pending
|
||||
jo .Lio_mcck_pending
|
||||
tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
|
||||
jo io_reschedule
|
||||
jo .Lio_reschedule
|
||||
tm __TI_flags+3(%r12),_TIF_SIGPENDING
|
||||
jo io_sigpending
|
||||
jo .Lio_sigpending
|
||||
tm __TI_flags+3(%r12),_TIF_NOTIFY_RESUME
|
||||
jo io_notify_resume
|
||||
jo .Lio_notify_resume
|
||||
tm __LC_CPU_FLAGS+3,_CIF_ASCE
|
||||
jo io_uaccess
|
||||
j io_return # beware of critical section cleanup
|
||||
jo .Lio_uaccess
|
||||
j .Lio_return # beware of critical section cleanup
|
||||
|
||||
#
|
||||
# _CIF_MCCK_PENDING is set, call handler
|
||||
#
|
||||
io_mcck_pending:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
l %r1,BASED(.Lhandle_mcck)
|
||||
.Lio_mcck_pending:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
l %r1,BASED(.Lc_handle_mcck)
|
||||
basr %r14,%r1 # TIF bit will be cleared by handler
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _CIF_ASCE is set, load user space asce
|
||||
#
|
||||
io_uaccess:
|
||||
.Lio_uaccess:
|
||||
ni __LC_CPU_FLAGS+3,255-_CIF_ASCE
|
||||
lctl %c1,%c1,__LC_USER_ASCE # load primary asce
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _TIF_NEED_RESCHED is set, call schedule
|
||||
#
|
||||
io_reschedule:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
l %r1,BASED(.Lschedule)
|
||||
.Lio_reschedule:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
l %r1,BASED(.Lc_schedule)
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
basr %r14,%r1 # call scheduler
|
||||
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _TIF_SIGPENDING is set, call do_signal
|
||||
#
|
||||
io_sigpending:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
l %r1,BASED(.Ldo_signal)
|
||||
.Lio_sigpending:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
l %r1,BASED(.Lc_do_signal)
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
lr %r2,%r11 # pass pointer to pt_regs
|
||||
basr %r14,%r1 # call do_signal
|
||||
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _TIF_SIGPENDING is set, call do_signal
|
||||
#
|
||||
io_notify_resume:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
l %r1,BASED(.Ldo_notify_resume)
|
||||
.Lio_notify_resume:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
l %r1,BASED(.Lc_do_notify_resume)
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
lr %r2,%r11 # pass pointer to pt_regs
|
||||
basr %r14,%r1 # call do_notify_resume
|
||||
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
/*
|
||||
* External interrupt handler routine
|
||||
@ -603,9 +603,9 @@ ENTRY(ext_int_handler)
|
||||
l %r13,__LC_SVC_NEW_PSW+4
|
||||
lm %r8,%r9,__LC_EXT_OLD_PSW
|
||||
tmh %r8,0x0001 # interrupting from user ?
|
||||
jz ext_skip
|
||||
jz .Lext_skip
|
||||
UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
|
||||
ext_skip:
|
||||
.Lext_skip:
|
||||
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
|
||||
stm %r0,%r7,__PT_R0(%r11)
|
||||
mvc __PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
|
||||
@ -614,29 +614,29 @@ ext_skip:
|
||||
mvc __PT_INT_PARM(4,%r11),__LC_EXT_PARAMS
|
||||
xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
|
||||
TRACE_IRQS_OFF
|
||||
l %r1,BASED(.Ldo_IRQ)
|
||||
l %r1,BASED(.Lc_do_IRQ)
|
||||
lr %r2,%r11 # pass pointer to pt_regs
|
||||
lhi %r3,EXT_INTERRUPT
|
||||
basr %r14,%r1 # call do_IRQ
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
/*
|
||||
* Load idle PSW. The second "half" of this function is in cleanup_idle.
|
||||
* Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
|
||||
*/
|
||||
ENTRY(psw_idle)
|
||||
st %r3,__SF_EMPTY(%r15)
|
||||
basr %r1,0
|
||||
la %r1,psw_idle_lpsw+4-.(%r1)
|
||||
la %r1,.Lpsw_idle_lpsw+4-.(%r1)
|
||||
st %r1,__SF_EMPTY+4(%r15)
|
||||
oi __SF_EMPTY+4(%r15),0x80
|
||||
stck __CLOCK_IDLE_ENTER(%r2)
|
||||
stpt __TIMER_IDLE_ENTER(%r2)
|
||||
psw_idle_lpsw:
|
||||
.Lpsw_idle_lpsw:
|
||||
lpsw __SF_EMPTY(%r15)
|
||||
br %r14
|
||||
psw_idle_end:
|
||||
.Lpsw_idle_end:
|
||||
|
||||
__critical_end:
|
||||
.L__critical_end:
|
||||
|
||||
/*
|
||||
* Machine check handler routines
|
||||
@ -650,7 +650,7 @@ ENTRY(mcck_int_handler)
|
||||
l %r13,__LC_SVC_NEW_PSW+4
|
||||
lm %r8,%r9,__LC_MCK_OLD_PSW
|
||||
tm __LC_MCCK_CODE,0x80 # system damage?
|
||||
jo mcck_panic # yes -> rest of mcck code invalid
|
||||
jo .Lmcck_panic # yes -> rest of mcck code invalid
|
||||
la %r14,__LC_CPU_TIMER_SAVE_AREA
|
||||
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
|
||||
tm __LC_MCCK_CODE+5,0x02 # stored cpu timer value valid?
|
||||
@ -668,22 +668,22 @@ ENTRY(mcck_int_handler)
|
||||
2: spt 0(%r14)
|
||||
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
|
||||
3: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
|
||||
jno mcck_panic # no -> skip cleanup critical
|
||||
jno .Lmcck_panic # no -> skip cleanup critical
|
||||
tm %r8,0x0001 # interrupting from user ?
|
||||
jz mcck_skip
|
||||
jz .Lmcck_skip
|
||||
UPDATE_VTIME %r14,%r15,__LC_MCCK_ENTER_TIMER
|
||||
mcck_skip:
|
||||
.Lmcck_skip:
|
||||
SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+32,__LC_PANIC_STACK,PAGE_SHIFT
|
||||
stm %r0,%r7,__PT_R0(%r11)
|
||||
mvc __PT_R8(32,%r11),__LC_GPREGS_SAVE_AREA+32
|
||||
stm %r8,%r9,__PT_PSW(%r11)
|
||||
xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
|
||||
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
|
||||
l %r1,BASED(.Ldo_machine_check)
|
||||
l %r1,BASED(.Lc_do_machine_check)
|
||||
lr %r2,%r11 # pass pointer to pt_regs
|
||||
basr %r14,%r1 # call s390_do_machine_check
|
||||
tm __PT_PSW+1(%r11),0x01 # returning to user ?
|
||||
jno mcck_return
|
||||
jno .Lmcck_return
|
||||
l %r1,__LC_KERNEL_STACK # switch to kernel stack
|
||||
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
|
||||
xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
|
||||
@ -691,12 +691,12 @@ mcck_skip:
|
||||
lr %r15,%r1
|
||||
ssm __LC_PGM_NEW_PSW # turn dat on, keep irqs off
|
||||
tm __LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
|
||||
jno mcck_return
|
||||
jno .Lmcck_return
|
||||
TRACE_IRQS_OFF
|
||||
l %r1,BASED(.Lhandle_mcck)
|
||||
l %r1,BASED(.Lc_handle_mcck)
|
||||
basr %r14,%r1 # call s390_handle_mcck
|
||||
TRACE_IRQS_ON
|
||||
mcck_return:
|
||||
.Lmcck_return:
|
||||
mvc __LC_RETURN_MCCK_PSW(8),__PT_PSW(%r11) # move return PSW
|
||||
tm __LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
|
||||
jno 0f
|
||||
@ -706,15 +706,15 @@ mcck_return:
|
||||
0: lm %r0,%r15,__PT_R0(%r11)
|
||||
lpsw __LC_RETURN_MCCK_PSW
|
||||
|
||||
mcck_panic:
|
||||
.Lmcck_panic:
|
||||
l %r14,__LC_PANIC_STACK
|
||||
slr %r14,%r15
|
||||
sra %r14,PAGE_SHIFT
|
||||
jz 0f
|
||||
l %r15,__LC_PANIC_STACK
|
||||
j mcck_skip
|
||||
j .Lmcck_skip
|
||||
0: ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
|
||||
j mcck_skip
|
||||
j .Lmcck_skip
|
||||
|
||||
#
|
||||
# PSW restart interrupt handler
|
||||
@ -764,58 +764,58 @@ stack_overflow:
|
||||
1: .long kernel_stack_overflow
|
||||
#endif
|
||||
|
||||
cleanup_table:
|
||||
.Lcleanup_table:
|
||||
.long system_call + 0x80000000
|
||||
.long sysc_do_svc + 0x80000000
|
||||
.long sysc_tif + 0x80000000
|
||||
.long sysc_restore + 0x80000000
|
||||
.long sysc_done + 0x80000000
|
||||
.long io_tif + 0x80000000
|
||||
.long io_restore + 0x80000000
|
||||
.long io_done + 0x80000000
|
||||
.long .Lsysc_do_svc + 0x80000000
|
||||
.long .Lsysc_tif + 0x80000000
|
||||
.long .Lsysc_restore + 0x80000000
|
||||
.long .Lsysc_done + 0x80000000
|
||||
.long .Lio_tif + 0x80000000
|
||||
.long .Lio_restore + 0x80000000
|
||||
.long .Lio_done + 0x80000000
|
||||
.long psw_idle + 0x80000000
|
||||
.long psw_idle_end + 0x80000000
|
||||
.long .Lpsw_idle_end + 0x80000000
|
||||
|
||||
cleanup_critical:
|
||||
cl %r9,BASED(cleanup_table) # system_call
|
||||
cl %r9,BASED(.Lcleanup_table) # system_call
|
||||
jl 0f
|
||||
cl %r9,BASED(cleanup_table+4) # sysc_do_svc
|
||||
jl cleanup_system_call
|
||||
cl %r9,BASED(cleanup_table+8) # sysc_tif
|
||||
cl %r9,BASED(.Lcleanup_table+4) # .Lsysc_do_svc
|
||||
jl .Lcleanup_system_call
|
||||
cl %r9,BASED(.Lcleanup_table+8) # .Lsysc_tif
|
||||
jl 0f
|
||||
cl %r9,BASED(cleanup_table+12) # sysc_restore
|
||||
jl cleanup_sysc_tif
|
||||
cl %r9,BASED(cleanup_table+16) # sysc_done
|
||||
jl cleanup_sysc_restore
|
||||
cl %r9,BASED(cleanup_table+20) # io_tif
|
||||
cl %r9,BASED(.Lcleanup_table+12) # .Lsysc_restore
|
||||
jl .Lcleanup_sysc_tif
|
||||
cl %r9,BASED(.Lcleanup_table+16) # .Lsysc_done
|
||||
jl .Lcleanup_sysc_restore
|
||||
cl %r9,BASED(.Lcleanup_table+20) # .Lio_tif
|
||||
jl 0f
|
||||
cl %r9,BASED(cleanup_table+24) # io_restore
|
||||
jl cleanup_io_tif
|
||||
cl %r9,BASED(cleanup_table+28) # io_done
|
||||
jl cleanup_io_restore
|
||||
cl %r9,BASED(cleanup_table+32) # psw_idle
|
||||
cl %r9,BASED(.Lcleanup_table+24) # .Lio_restore
|
||||
jl .Lcleanup_io_tif
|
||||
cl %r9,BASED(.Lcleanup_table+28) # .Lio_done
|
||||
jl .Lcleanup_io_restore
|
||||
cl %r9,BASED(.Lcleanup_table+32) # psw_idle
|
||||
jl 0f
|
||||
cl %r9,BASED(cleanup_table+36) # psw_idle_end
|
||||
jl cleanup_idle
|
||||
cl %r9,BASED(.Lcleanup_table+36) # .Lpsw_idle_end
|
||||
jl .Lcleanup_idle
|
||||
0: br %r14
|
||||
|
||||
cleanup_system_call:
|
||||
.Lcleanup_system_call:
|
||||
# check if stpt has been executed
|
||||
cl %r9,BASED(cleanup_system_call_insn)
|
||||
cl %r9,BASED(.Lcleanup_system_call_insn)
|
||||
jh 0f
|
||||
mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
|
||||
chi %r11,__LC_SAVE_AREA_ASYNC
|
||||
je 0f
|
||||
mvc __LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
|
||||
0: # check if stm has been executed
|
||||
cl %r9,BASED(cleanup_system_call_insn+4)
|
||||
cl %r9,BASED(.Lcleanup_system_call_insn+4)
|
||||
jh 0f
|
||||
mvc __LC_SAVE_AREA_SYNC(32),0(%r11)
|
||||
0: # set up saved registers r12, and r13
|
||||
st %r12,16(%r11) # r12 thread-info pointer
|
||||
st %r13,20(%r11) # r13 literal-pool pointer
|
||||
# check if the user time calculation has been done
|
||||
cl %r9,BASED(cleanup_system_call_insn+8)
|
||||
cl %r9,BASED(.Lcleanup_system_call_insn+8)
|
||||
jh 0f
|
||||
l %r10,__LC_EXIT_TIMER
|
||||
l %r15,__LC_EXIT_TIMER+4
|
||||
@ -824,7 +824,7 @@ cleanup_system_call:
|
||||
st %r10,__LC_USER_TIMER
|
||||
st %r15,__LC_USER_TIMER+4
|
||||
0: # check if the system time calculation has been done
|
||||
cl %r9,BASED(cleanup_system_call_insn+12)
|
||||
cl %r9,BASED(.Lcleanup_system_call_insn+12)
|
||||
jh 0f
|
||||
l %r10,__LC_LAST_UPDATE_TIMER
|
||||
l %r15,__LC_LAST_UPDATE_TIMER+4
|
||||
@ -848,20 +848,20 @@ cleanup_system_call:
|
||||
# setup saved register 15
|
||||
st %r15,28(%r11) # r15 stack pointer
|
||||
# set new psw address and exit
|
||||
l %r9,BASED(cleanup_table+4) # sysc_do_svc + 0x80000000
|
||||
l %r9,BASED(.Lcleanup_table+4) # .Lsysc_do_svc + 0x80000000
|
||||
br %r14
|
||||
cleanup_system_call_insn:
|
||||
.Lcleanup_system_call_insn:
|
||||
.long system_call + 0x80000000
|
||||
.long sysc_stm + 0x80000000
|
||||
.long sysc_vtime + 0x80000000 + 36
|
||||
.long sysc_vtime + 0x80000000 + 76
|
||||
.long .Lsysc_stm + 0x80000000
|
||||
.long .Lsysc_vtime + 0x80000000 + 36
|
||||
.long .Lsysc_vtime + 0x80000000 + 76
|
||||
|
||||
cleanup_sysc_tif:
|
||||
l %r9,BASED(cleanup_table+8) # sysc_tif + 0x80000000
|
||||
.Lcleanup_sysc_tif:
|
||||
l %r9,BASED(.Lcleanup_table+8) # .Lsysc_tif + 0x80000000
|
||||
br %r14
|
||||
|
||||
cleanup_sysc_restore:
|
||||
cl %r9,BASED(cleanup_sysc_restore_insn)
|
||||
.Lcleanup_sysc_restore:
|
||||
cl %r9,BASED(.Lcleanup_sysc_restore_insn)
|
||||
jhe 0f
|
||||
l %r9,12(%r11) # get saved pointer to pt_regs
|
||||
mvc __LC_RETURN_PSW(8),__PT_PSW(%r9)
|
||||
@ -869,15 +869,15 @@ cleanup_sysc_restore:
|
||||
lm %r0,%r7,__PT_R0(%r9)
|
||||
0: lm %r8,%r9,__LC_RETURN_PSW
|
||||
br %r14
|
||||
cleanup_sysc_restore_insn:
|
||||
.long sysc_done - 4 + 0x80000000
|
||||
.Lcleanup_sysc_restore_insn:
|
||||
.long .Lsysc_done - 4 + 0x80000000
|
||||
|
||||
cleanup_io_tif:
|
||||
l %r9,BASED(cleanup_table+20) # io_tif + 0x80000000
|
||||
.Lcleanup_io_tif:
|
||||
l %r9,BASED(.Lcleanup_table+20) # .Lio_tif + 0x80000000
|
||||
br %r14
|
||||
|
||||
cleanup_io_restore:
|
||||
cl %r9,BASED(cleanup_io_restore_insn)
|
||||
.Lcleanup_io_restore:
|
||||
cl %r9,BASED(.Lcleanup_io_restore_insn)
|
||||
jhe 0f
|
||||
l %r9,12(%r11) # get saved r11 pointer to pt_regs
|
||||
mvc __LC_RETURN_PSW(8),__PT_PSW(%r9)
|
||||
@ -885,10 +885,10 @@ cleanup_io_restore:
|
||||
lm %r0,%r7,__PT_R0(%r9)
|
||||
0: lm %r8,%r9,__LC_RETURN_PSW
|
||||
br %r14
|
||||
cleanup_io_restore_insn:
|
||||
.long io_done - 4 + 0x80000000
|
||||
.Lcleanup_io_restore_insn:
|
||||
.long .Lio_done - 4 + 0x80000000
|
||||
|
||||
cleanup_idle:
|
||||
.Lcleanup_idle:
|
||||
# copy interrupt clock & cpu timer
|
||||
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
|
||||
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
|
||||
@ -897,7 +897,7 @@ cleanup_idle:
|
||||
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
|
||||
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
|
||||
0: # check if stck has been executed
|
||||
cl %r9,BASED(cleanup_idle_insn)
|
||||
cl %r9,BASED(.Lcleanup_idle_insn)
|
||||
jhe 1f
|
||||
mvc __CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
|
||||
mvc __TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r3)
|
||||
@ -913,12 +913,12 @@ cleanup_idle:
|
||||
stm %r9,%r10,__LC_SYSTEM_TIMER
|
||||
mvc __LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
|
||||
# prepare return psw
|
||||
n %r8,BASED(cleanup_idle_wait) # clear irq & wait state bits
|
||||
n %r8,BASED(.Lcleanup_idle_wait) # clear irq & wait state bits
|
||||
l %r9,24(%r11) # return from psw_idle
|
||||
br %r14
|
||||
cleanup_idle_insn:
|
||||
.long psw_idle_lpsw + 0x80000000
|
||||
cleanup_idle_wait:
|
||||
.Lcleanup_idle_insn:
|
||||
.long .Lpsw_idle_lpsw + 0x80000000
|
||||
.Lcleanup_idle_wait:
|
||||
.long 0xfcfdffff
|
||||
|
||||
/*
|
||||
@ -933,30 +933,30 @@ cleanup_idle_wait:
|
||||
/*
|
||||
* Symbol constants
|
||||
*/
|
||||
.Ldo_machine_check: .long s390_do_machine_check
|
||||
.Lhandle_mcck: .long s390_handle_mcck
|
||||
.Ldo_IRQ: .long do_IRQ
|
||||
.Ldo_signal: .long do_signal
|
||||
.Ldo_notify_resume: .long do_notify_resume
|
||||
.Ldo_per_trap: .long do_per_trap
|
||||
.Ljump_table: .long pgm_check_table
|
||||
.Lschedule: .long schedule
|
||||
.Lc_do_machine_check: .long s390_do_machine_check
|
||||
.Lc_handle_mcck: .long s390_handle_mcck
|
||||
.Lc_do_IRQ: .long do_IRQ
|
||||
.Lc_do_signal: .long do_signal
|
||||
.Lc_do_notify_resume: .long do_notify_resume
|
||||
.Lc_do_per_trap: .long do_per_trap
|
||||
.Lc_jump_table: .long pgm_check_table
|
||||
.Lc_schedule: .long schedule
|
||||
#ifdef CONFIG_PREEMPT
|
||||
.Lpreempt_irq: .long preempt_schedule_irq
|
||||
.Lc_preempt_irq: .long preempt_schedule_irq
|
||||
#endif
|
||||
.Ltrace_enter: .long do_syscall_trace_enter
|
||||
.Ltrace_exit: .long do_syscall_trace_exit
|
||||
.Lschedule_tail: .long schedule_tail
|
||||
.Lsysc_per: .long sysc_per + 0x80000000
|
||||
.Lc_trace_enter: .long do_syscall_trace_enter
|
||||
.Lc_trace_exit: .long do_syscall_trace_exit
|
||||
.Lc_schedule_tail: .long schedule_tail
|
||||
.Lc_sysc_per: .long .Lsysc_per + 0x80000000
|
||||
#ifdef CONFIG_TRACE_IRQFLAGS
|
||||
.Lhardirqs_on: .long trace_hardirqs_on_caller
|
||||
.Lhardirqs_off: .long trace_hardirqs_off_caller
|
||||
.Lc_hardirqs_on: .long trace_hardirqs_on_caller
|
||||
.Lc_hardirqs_off: .long trace_hardirqs_off_caller
|
||||
#endif
|
||||
#ifdef CONFIG_LOCKDEP
|
||||
.Llockdep_sys_exit: .long lockdep_sys_exit
|
||||
.Lc_lockdep_sys_exit: .long lockdep_sys_exit
|
||||
#endif
|
||||
.Lcritical_start: .long __critical_start + 0x80000000
|
||||
.Lcritical_length: .long __critical_end - __critical_start
|
||||
.Lc_critical_start: .long .L__critical_start + 0x80000000
|
||||
.Lc_critical_length: .long .L__critical_end - .L__critical_start
|
||||
|
||||
.section .rodata, "a"
|
||||
#define SYSCALL(esa,esame,emu) .long esa
|
||||
|
||||
@ -91,7 +91,7 @@ _PIF_WORK = (_PIF_PER_TRAP)
|
||||
.if \reason==1
|
||||
# Some program interrupts are suppressing (e.g. protection).
|
||||
# We must also check the instruction after SIE in that case.
|
||||
# do_protection_exception will rewind to rewind_pad
|
||||
# do_protection_exception will rewind to .Lrewind_pad
|
||||
jh .+42
|
||||
.else
|
||||
jhe .+42
|
||||
@ -192,7 +192,7 @@ ENTRY(__switch_to)
|
||||
lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
|
||||
br %r14
|
||||
|
||||
__critical_start:
|
||||
.L__critical_start:
|
||||
/*
|
||||
* SVC interrupt handler routine. System calls are synchronous events and
|
||||
* are executed with interrupts enabled.
|
||||
@ -200,15 +200,15 @@ __critical_start:
|
||||
|
||||
ENTRY(system_call)
|
||||
stpt __LC_SYNC_ENTER_TIMER
|
||||
sysc_stmg:
|
||||
.Lsysc_stmg:
|
||||
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
|
||||
lg %r10,__LC_LAST_BREAK
|
||||
lg %r12,__LC_THREAD_INFO
|
||||
lghi %r14,_PIF_SYSCALL
|
||||
sysc_per:
|
||||
.Lsysc_per:
|
||||
lg %r15,__LC_KERNEL_STACK
|
||||
la %r11,STACK_FRAME_OVERHEAD(%r15) # pointer to pt_regs
|
||||
sysc_vtime:
|
||||
.Lsysc_vtime:
|
||||
UPDATE_VTIME %r13,__LC_SYNC_ENTER_TIMER
|
||||
LAST_BREAK %r13
|
||||
stmg %r0,%r7,__PT_R0(%r11)
|
||||
@ -216,39 +216,39 @@ sysc_vtime:
|
||||
mvc __PT_PSW(16,%r11),__LC_SVC_OLD_PSW
|
||||
mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
|
||||
stg %r14,__PT_FLAGS(%r11)
|
||||
sysc_do_svc:
|
||||
.Lsysc_do_svc:
|
||||
lg %r10,__TI_sysc_table(%r12) # address of system call table
|
||||
llgh %r8,__PT_INT_CODE+2(%r11)
|
||||
slag %r8,%r8,2 # shift and test for svc 0
|
||||
jnz sysc_nr_ok
|
||||
jnz .Lsysc_nr_ok
|
||||
# svc 0: system call number in %r1
|
||||
llgfr %r1,%r1 # clear high word in r1
|
||||
cghi %r1,NR_syscalls
|
||||
jnl sysc_nr_ok
|
||||
jnl .Lsysc_nr_ok
|
||||
sth %r1,__PT_INT_CODE+2(%r11)
|
||||
slag %r8,%r1,2
|
||||
sysc_nr_ok:
|
||||
.Lsysc_nr_ok:
|
||||
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
|
||||
stg %r2,__PT_ORIG_GPR2(%r11)
|
||||
stg %r7,STACK_FRAME_OVERHEAD(%r15)
|
||||
lgf %r9,0(%r8,%r10) # get system call add.
|
||||
tm __TI_flags+7(%r12),_TIF_TRACE
|
||||
jnz sysc_tracesys
|
||||
jnz .Lsysc_tracesys
|
||||
basr %r14,%r9 # call sys_xxxx
|
||||
stg %r2,__PT_R2(%r11) # store return value
|
||||
|
||||
sysc_return:
|
||||
.Lsysc_return:
|
||||
LOCKDEP_SYS_EXIT
|
||||
sysc_tif:
|
||||
.Lsysc_tif:
|
||||
tm __PT_PSW+1(%r11),0x01 # returning to user ?
|
||||
jno sysc_restore
|
||||
jno .Lsysc_restore
|
||||
tm __PT_FLAGS+7(%r11),_PIF_WORK
|
||||
jnz sysc_work
|
||||
jnz .Lsysc_work
|
||||
tm __TI_flags+7(%r12),_TIF_WORK
|
||||
jnz sysc_work # check for work
|
||||
jnz .Lsysc_work # check for work
|
||||
tm __LC_CPU_FLAGS+7,_CIF_WORK
|
||||
jnz sysc_work
|
||||
sysc_restore:
|
||||
jnz .Lsysc_work
|
||||
.Lsysc_restore:
|
||||
lg %r14,__LC_VDSO_PER_CPU
|
||||
lmg %r0,%r10,__PT_R0(%r11)
|
||||
mvc __LC_RETURN_PSW(16),__PT_PSW(%r11)
|
||||
@ -256,101 +256,101 @@ sysc_restore:
|
||||
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
|
||||
lmg %r11,%r15,__PT_R11(%r11)
|
||||
lpswe __LC_RETURN_PSW
|
||||
sysc_done:
|
||||
.Lsysc_done:
|
||||
|
||||
#
|
||||
# One of the work bits is on. Find out which one.
|
||||
#
|
||||
sysc_work:
|
||||
.Lsysc_work:
|
||||
tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
|
||||
jo sysc_mcck_pending
|
||||
jo .Lsysc_mcck_pending
|
||||
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
|
||||
jo sysc_reschedule
|
||||
jo .Lsysc_reschedule
|
||||
#ifdef CONFIG_UPROBES
|
||||
tm __TI_flags+7(%r12),_TIF_UPROBE
|
||||
jo sysc_uprobe_notify
|
||||
jo .Lsysc_uprobe_notify
|
||||
#endif
|
||||
tm __PT_FLAGS+7(%r11),_PIF_PER_TRAP
|
||||
jo sysc_singlestep
|
||||
jo .Lsysc_singlestep
|
||||
tm __TI_flags+7(%r12),_TIF_SIGPENDING
|
||||
jo sysc_sigpending
|
||||
jo .Lsysc_sigpending
|
||||
tm __TI_flags+7(%r12),_TIF_NOTIFY_RESUME
|
||||
jo sysc_notify_resume
|
||||
jo .Lsysc_notify_resume
|
||||
tm __LC_CPU_FLAGS+7,_CIF_ASCE
|
||||
jo sysc_uaccess
|
||||
j sysc_return # beware of critical section cleanup
|
||||
jo .Lsysc_uaccess
|
||||
j .Lsysc_return # beware of critical section cleanup
|
||||
|
||||
#
|
||||
# _TIF_NEED_RESCHED is set, call schedule
|
||||
#
|
||||
sysc_reschedule:
|
||||
larl %r14,sysc_return
|
||||
.Lsysc_reschedule:
|
||||
larl %r14,.Lsysc_return
|
||||
jg schedule
|
||||
|
||||
#
|
||||
# _CIF_MCCK_PENDING is set, call handler
|
||||
#
|
||||
sysc_mcck_pending:
|
||||
larl %r14,sysc_return
|
||||
.Lsysc_mcck_pending:
|
||||
larl %r14,.Lsysc_return
|
||||
jg s390_handle_mcck # TIF bit will be cleared by handler
|
||||
|
||||
#
|
||||
# _CIF_ASCE is set, load user space asce
|
||||
#
|
||||
sysc_uaccess:
|
||||
.Lsysc_uaccess:
|
||||
ni __LC_CPU_FLAGS+7,255-_CIF_ASCE
|
||||
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
|
||||
j sysc_return
|
||||
j .Lsysc_return
|
||||
|
||||
#
|
||||
# _TIF_SIGPENDING is set, call do_signal
|
||||
#
|
||||
sysc_sigpending:
|
||||
.Lsysc_sigpending:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
brasl %r14,do_signal
|
||||
tm __PT_FLAGS+7(%r11),_PIF_SYSCALL
|
||||
jno sysc_return
|
||||
jno .Lsysc_return
|
||||
lmg %r2,%r7,__PT_R2(%r11) # load svc arguments
|
||||
lg %r10,__TI_sysc_table(%r12) # address of system call table
|
||||
lghi %r8,0 # svc 0 returns -ENOSYS
|
||||
llgh %r1,__PT_INT_CODE+2(%r11) # load new svc number
|
||||
cghi %r1,NR_syscalls
|
||||
jnl sysc_nr_ok # invalid svc number -> do svc 0
|
||||
jnl .Lsysc_nr_ok # invalid svc number -> do svc 0
|
||||
slag %r8,%r1,2
|
||||
j sysc_nr_ok # restart svc
|
||||
j .Lsysc_nr_ok # restart svc
|
||||
|
||||
#
|
||||
# _TIF_NOTIFY_RESUME is set, call do_notify_resume
|
||||
#
|
||||
sysc_notify_resume:
|
||||
.Lsysc_notify_resume:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
larl %r14,sysc_return
|
||||
larl %r14,.Lsysc_return
|
||||
jg do_notify_resume
|
||||
|
||||
#
|
||||
# _TIF_UPROBE is set, call uprobe_notify_resume
|
||||
#
|
||||
#ifdef CONFIG_UPROBES
|
||||
sysc_uprobe_notify:
|
||||
.Lsysc_uprobe_notify:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
larl %r14,sysc_return
|
||||
larl %r14,.Lsysc_return
|
||||
jg uprobe_notify_resume
|
||||
#endif
|
||||
|
||||
#
|
||||
# _PIF_PER_TRAP is set, call do_per_trap
|
||||
#
|
||||
sysc_singlestep:
|
||||
.Lsysc_singlestep:
|
||||
ni __PT_FLAGS+7(%r11),255-_PIF_PER_TRAP
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
larl %r14,sysc_return
|
||||
larl %r14,.Lsysc_return
|
||||
jg do_per_trap
|
||||
|
||||
#
|
||||
# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
|
||||
# and after the system call
|
||||
#
|
||||
sysc_tracesys:
|
||||
.Lsysc_tracesys:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
la %r3,0
|
||||
llgh %r0,__PT_INT_CODE+2(%r11)
|
||||
@ -358,20 +358,20 @@ sysc_tracesys:
|
||||
brasl %r14,do_syscall_trace_enter
|
||||
lghi %r0,NR_syscalls
|
||||
clgr %r0,%r2
|
||||
jnh sysc_tracenogo
|
||||
jnh .Lsysc_tracenogo
|
||||
sllg %r8,%r2,2
|
||||
lgf %r9,0(%r8,%r10)
|
||||
sysc_tracego:
|
||||
.Lsysc_tracego:
|
||||
lmg %r3,%r7,__PT_R3(%r11)
|
||||
stg %r7,STACK_FRAME_OVERHEAD(%r15)
|
||||
lg %r2,__PT_ORIG_GPR2(%r11)
|
||||
basr %r14,%r9 # call sys_xxx
|
||||
stg %r2,__PT_R2(%r11) # store return value
|
||||
sysc_tracenogo:
|
||||
.Lsysc_tracenogo:
|
||||
tm __TI_flags+7(%r12),_TIF_TRACE
|
||||
jz sysc_return
|
||||
jz .Lsysc_return
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
larl %r14,sysc_return
|
||||
larl %r14,.Lsysc_return
|
||||
jg do_syscall_trace_exit
|
||||
|
||||
#
|
||||
@ -384,13 +384,13 @@ ENTRY(ret_from_fork)
|
||||
TRACE_IRQS_ON
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
tm __PT_PSW+1(%r11),0x01 # forking a kernel thread ?
|
||||
jne sysc_tracenogo
|
||||
jne .Lsysc_tracenogo
|
||||
# it's a kernel thread
|
||||
lmg %r9,%r10,__PT_R9(%r11) # load gprs
|
||||
ENTRY(kernel_thread_starter)
|
||||
la %r2,0(%r10)
|
||||
basr %r14,%r9
|
||||
j sysc_tracenogo
|
||||
j .Lsysc_tracenogo
|
||||
|
||||
/*
|
||||
* Program check handler routine
|
||||
@ -409,7 +409,7 @@ ENTRY(pgm_check_handler)
|
||||
tmhh %r8,0x4000 # PER bit set in old PSW ?
|
||||
jnz 0f # -> enabled, can't be a double fault
|
||||
tm __LC_PGM_ILC+3,0x80 # check for per exception
|
||||
jnz pgm_svcper # -> single stepped svc
|
||||
jnz .Lpgm_svcper # -> single stepped svc
|
||||
0: CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
|
||||
aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
|
||||
j 2f
|
||||
@ -432,7 +432,7 @@ ENTRY(pgm_check_handler)
|
||||
tm __LC_PGM_ILC+3,0x80 # check for per exception
|
||||
jz 0f
|
||||
tmhh %r8,0x0001 # kernel per event ?
|
||||
jz pgm_kprobe
|
||||
jz .Lpgm_kprobe
|
||||
oi __PT_FLAGS+7(%r11),_PIF_PER_TRAP
|
||||
mvc __THREAD_per_address(8,%r14),__LC_PER_ADDRESS
|
||||
mvc __THREAD_per_cause(2,%r14),__LC_PER_CODE
|
||||
@ -443,31 +443,31 @@ ENTRY(pgm_check_handler)
|
||||
llgh %r10,__PT_INT_CODE+2(%r11)
|
||||
nill %r10,0x007f
|
||||
sll %r10,2
|
||||
je sysc_return
|
||||
je .Lsysc_return
|
||||
lgf %r1,0(%r10,%r1) # load address of handler routine
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
basr %r14,%r1 # branch to interrupt-handler
|
||||
j sysc_return
|
||||
j .Lsysc_return
|
||||
|
||||
#
|
||||
# PER event in supervisor state, must be kprobes
|
||||
#
|
||||
pgm_kprobe:
|
||||
.Lpgm_kprobe:
|
||||
REENABLE_IRQS
|
||||
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
brasl %r14,do_per_trap
|
||||
j sysc_return
|
||||
j .Lsysc_return
|
||||
|
||||
#
|
||||
# single stepped system call
|
||||
#
|
||||
pgm_svcper:
|
||||
.Lpgm_svcper:
|
||||
mvc __LC_RETURN_PSW(8),__LC_SVC_NEW_PSW
|
||||
larl %r14,sysc_per
|
||||
larl %r14,.Lsysc_per
|
||||
stg %r14,__LC_RETURN_PSW+8
|
||||
lghi %r14,_PIF_SYSCALL | _PIF_PER_TRAP
|
||||
lpswe __LC_RETURN_PSW # branch to sysc_per and enable irqs
|
||||
lpswe __LC_RETURN_PSW # branch to .Lsysc_per and enable irqs
|
||||
|
||||
/*
|
||||
* IO interrupt handler routine
|
||||
@ -483,10 +483,10 @@ ENTRY(io_int_handler)
|
||||
HANDLE_SIE_INTERCEPT %r14,2
|
||||
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
|
||||
tmhh %r8,0x0001 # interrupting from user?
|
||||
jz io_skip
|
||||
jz .Lio_skip
|
||||
UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
|
||||
LAST_BREAK %r14
|
||||
io_skip:
|
||||
.Lio_skip:
|
||||
stmg %r0,%r7,__PT_R0(%r11)
|
||||
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
|
||||
stmg %r8,%r9,__PT_PSW(%r11)
|
||||
@ -494,29 +494,29 @@ io_skip:
|
||||
xc __PT_FLAGS(8,%r11),__PT_FLAGS(%r11)
|
||||
TRACE_IRQS_OFF
|
||||
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
|
||||
io_loop:
|
||||
.Lio_loop:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
lghi %r3,IO_INTERRUPT
|
||||
tm __PT_INT_CODE+8(%r11),0x80 # adapter interrupt ?
|
||||
jz io_call
|
||||
jz .Lio_call
|
||||
lghi %r3,THIN_INTERRUPT
|
||||
io_call:
|
||||
.Lio_call:
|
||||
brasl %r14,do_IRQ
|
||||
tm __LC_MACHINE_FLAGS+6,0x10 # MACHINE_FLAG_LPAR
|
||||
jz io_return
|
||||
jz .Lio_return
|
||||
tpi 0
|
||||
jz io_return
|
||||
jz .Lio_return
|
||||
mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
|
||||
j io_loop
|
||||
io_return:
|
||||
j .Lio_loop
|
||||
.Lio_return:
|
||||
LOCKDEP_SYS_EXIT
|
||||
TRACE_IRQS_ON
|
||||
io_tif:
|
||||
.Lio_tif:
|
||||
tm __TI_flags+7(%r12),_TIF_WORK
|
||||
jnz io_work # there is work to do (signals etc.)
|
||||
jnz .Lio_work # there is work to do (signals etc.)
|
||||
tm __LC_CPU_FLAGS+7,_CIF_WORK
|
||||
jnz io_work
|
||||
io_restore:
|
||||
jnz .Lio_work
|
||||
.Lio_restore:
|
||||
lg %r14,__LC_VDSO_PER_CPU
|
||||
lmg %r0,%r10,__PT_R0(%r11)
|
||||
mvc __LC_RETURN_PSW(16),__PT_PSW(%r11)
|
||||
@ -524,7 +524,7 @@ io_restore:
|
||||
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
|
||||
lmg %r11,%r15,__PT_R11(%r11)
|
||||
lpswe __LC_RETURN_PSW
|
||||
io_done:
|
||||
.Lio_done:
|
||||
|
||||
#
|
||||
# There is work todo, find out in which context we have been interrupted:
|
||||
@ -535,15 +535,15 @@ io_done:
|
||||
# the preemption counter and if it is zero call preempt_schedule_irq
|
||||
# Before any work can be done, a switch to the kernel stack is required.
|
||||
#
|
||||
io_work:
|
||||
.Lio_work:
|
||||
tm __PT_PSW+1(%r11),0x01 # returning to user ?
|
||||
jo io_work_user # yes -> do resched & signal
|
||||
jo .Lio_work_user # yes -> do resched & signal
|
||||
#ifdef CONFIG_PREEMPT
|
||||
# check for preemptive scheduling
|
||||
icm %r0,15,__TI_precount(%r12)
|
||||
jnz io_restore # preemption is disabled
|
||||
jnz .Lio_restore # preemption is disabled
|
||||
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
|
||||
jno io_restore
|
||||
jno .Lio_restore
|
||||
# switch to kernel stack
|
||||
lg %r1,__PT_R15(%r11)
|
||||
aghi %r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
|
||||
@ -551,19 +551,19 @@ io_work:
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
|
||||
la %r11,STACK_FRAME_OVERHEAD(%r1)
|
||||
lgr %r15,%r1
|
||||
# TRACE_IRQS_ON already done at io_return, call
|
||||
# TRACE_IRQS_ON already done at .Lio_return, call
|
||||
# TRACE_IRQS_OFF to keep things symmetrical
|
||||
TRACE_IRQS_OFF
|
||||
brasl %r14,preempt_schedule_irq
|
||||
j io_return
|
||||
j .Lio_return
|
||||
#else
|
||||
j io_restore
|
||||
j .Lio_restore
|
||||
#endif
|
||||
|
||||
#
|
||||
# Need to do work before returning to userspace, switch to kernel stack
|
||||
#
|
||||
io_work_user:
|
||||
.Lio_work_user:
|
||||
lg %r1,__LC_KERNEL_STACK
|
||||
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
|
||||
@ -573,70 +573,70 @@ io_work_user:
|
||||
#
|
||||
# One of the work bits is on. Find out which one.
|
||||
#
|
||||
io_work_tif:
|
||||
.Lio_work_tif:
|
||||
tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
|
||||
jo io_mcck_pending
|
||||
jo .Lio_mcck_pending
|
||||
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
|
||||
jo io_reschedule
|
||||
jo .Lio_reschedule
|
||||
tm __TI_flags+7(%r12),_TIF_SIGPENDING
|
||||
jo io_sigpending
|
||||
jo .Lio_sigpending
|
||||
tm __TI_flags+7(%r12),_TIF_NOTIFY_RESUME
|
||||
jo io_notify_resume
|
||||
jo .Lio_notify_resume
|
||||
tm __LC_CPU_FLAGS+7,_CIF_ASCE
|
||||
jo io_uaccess
|
||||
j io_return # beware of critical section cleanup
|
||||
jo .Lio_uaccess
|
||||
j .Lio_return # beware of critical section cleanup
|
||||
|
||||
#
|
||||
# _CIF_MCCK_PENDING is set, call handler
|
||||
#
|
||||
io_mcck_pending:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
.Lio_mcck_pending:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
brasl %r14,s390_handle_mcck # TIF bit will be cleared by handler
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _CIF_ASCE is set, load user space asce
|
||||
#
|
||||
io_uaccess:
|
||||
.Lio_uaccess:
|
||||
ni __LC_CPU_FLAGS+7,255-_CIF_ASCE
|
||||
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _TIF_NEED_RESCHED is set, call schedule
|
||||
#
|
||||
io_reschedule:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
.Lio_reschedule:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
brasl %r14,schedule # call scheduler
|
||||
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _TIF_SIGPENDING or is set, call do_signal
|
||||
#
|
||||
io_sigpending:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
.Lio_sigpending:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
brasl %r14,do_signal
|
||||
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
#
|
||||
# _TIF_NOTIFY_RESUME or is set, call do_notify_resume
|
||||
#
|
||||
io_notify_resume:
|
||||
# TRACE_IRQS_ON already done at io_return
|
||||
.Lio_notify_resume:
|
||||
# TRACE_IRQS_ON already done at .Lio_return
|
||||
ssm __LC_SVC_NEW_PSW # reenable interrupts
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
brasl %r14,do_notify_resume
|
||||
ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
|
||||
TRACE_IRQS_OFF
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
/*
|
||||
* External interrupt handler routine
|
||||
@ -652,10 +652,10 @@ ENTRY(ext_int_handler)
|
||||
HANDLE_SIE_INTERCEPT %r14,3
|
||||
SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
|
||||
tmhh %r8,0x0001 # interrupting from user ?
|
||||
jz ext_skip
|
||||
jz .Lext_skip
|
||||
UPDATE_VTIME %r14,__LC_ASYNC_ENTER_TIMER
|
||||
LAST_BREAK %r14
|
||||
ext_skip:
|
||||
.Lext_skip:
|
||||
stmg %r0,%r7,__PT_R0(%r11)
|
||||
mvc __PT_R8(64,%r11),__LC_SAVE_AREA_ASYNC
|
||||
stmg %r8,%r9,__PT_PSW(%r11)
|
||||
@ -669,23 +669,23 @@ ext_skip:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
lghi %r3,EXT_INTERRUPT
|
||||
brasl %r14,do_IRQ
|
||||
j io_return
|
||||
j .Lio_return
|
||||
|
||||
/*
|
||||
* Load idle PSW. The second "half" of this function is in cleanup_idle.
|
||||
* Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
|
||||
*/
|
||||
ENTRY(psw_idle)
|
||||
stg %r3,__SF_EMPTY(%r15)
|
||||
larl %r1,psw_idle_lpsw+4
|
||||
larl %r1,.Lpsw_idle_lpsw+4
|
||||
stg %r1,__SF_EMPTY+8(%r15)
|
||||
STCK __CLOCK_IDLE_ENTER(%r2)
|
||||
stpt __TIMER_IDLE_ENTER(%r2)
|
||||
psw_idle_lpsw:
|
||||
.Lpsw_idle_lpsw:
|
||||
lpswe __SF_EMPTY(%r15)
|
||||
br %r14
|
||||
psw_idle_end:
|
||||
.Lpsw_idle_end:
|
||||
|
||||
__critical_end:
|
||||
.L__critical_end:
|
||||
|
||||
/*
|
||||
* Machine check handler routines
|
||||
@ -701,7 +701,7 @@ ENTRY(mcck_int_handler)
|
||||
lmg %r8,%r9,__LC_MCK_OLD_PSW
|
||||
HANDLE_SIE_INTERCEPT %r14,4
|
||||
tm __LC_MCCK_CODE,0x80 # system damage?
|
||||
jo mcck_panic # yes -> rest of mcck code invalid
|
||||
jo .Lmcck_panic # yes -> rest of mcck code invalid
|
||||
lghi %r14,__LC_CPU_TIMER_SAVE_AREA
|
||||
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
|
||||
tm __LC_MCCK_CODE+5,0x02 # stored cpu timer value valid?
|
||||
@ -719,13 +719,13 @@ ENTRY(mcck_int_handler)
|
||||
2: spt 0(%r14)
|
||||
mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
|
||||
3: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
|
||||
jno mcck_panic # no -> skip cleanup critical
|
||||
jno .Lmcck_panic # no -> skip cleanup critical
|
||||
SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+64,__LC_PANIC_STACK,PAGE_SHIFT
|
||||
tm %r8,0x0001 # interrupting from user ?
|
||||
jz mcck_skip
|
||||
jz .Lmcck_skip
|
||||
UPDATE_VTIME %r14,__LC_MCCK_ENTER_TIMER
|
||||
LAST_BREAK %r14
|
||||
mcck_skip:
|
||||
.Lmcck_skip:
|
||||
lghi %r14,__LC_GPREGS_SAVE_AREA+64
|
||||
stmg %r0,%r7,__PT_R0(%r11)
|
||||
mvc __PT_R8(64,%r11),0(%r14)
|
||||
@ -735,7 +735,7 @@ mcck_skip:
|
||||
lgr %r2,%r11 # pass pointer to pt_regs
|
||||
brasl %r14,s390_do_machine_check
|
||||
tm __PT_PSW+1(%r11),0x01 # returning to user ?
|
||||
jno mcck_return
|
||||
jno .Lmcck_return
|
||||
lg %r1,__LC_KERNEL_STACK # switch to kernel stack
|
||||
mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
|
||||
xc __SF_BACKCHAIN(8,%r1),__SF_BACKCHAIN(%r1)
|
||||
@ -743,11 +743,11 @@ mcck_skip:
|
||||
lgr %r15,%r1
|
||||
ssm __LC_PGM_NEW_PSW # turn dat on, keep irqs off
|
||||
tm __LC_CPU_FLAGS+7,_CIF_MCCK_PENDING
|
||||
jno mcck_return
|
||||
jno .Lmcck_return
|
||||
TRACE_IRQS_OFF
|
||||
brasl %r14,s390_handle_mcck
|
||||
TRACE_IRQS_ON
|
||||
mcck_return:
|
||||
.Lmcck_return:
|
||||
lg %r14,__LC_VDSO_PER_CPU
|
||||
lmg %r0,%r10,__PT_R0(%r11)
|
||||
mvc __LC_RETURN_MCCK_PSW(16),__PT_PSW(%r11) # move return PSW
|
||||
@ -758,14 +758,14 @@ mcck_return:
|
||||
0: lmg %r11,%r15,__PT_R11(%r11)
|
||||
lpswe __LC_RETURN_MCCK_PSW
|
||||
|
||||
mcck_panic:
|
||||
.Lmcck_panic:
|
||||
lg %r14,__LC_PANIC_STACK
|
||||
slgr %r14,%r15
|
||||
srag %r14,%r14,PAGE_SHIFT
|
||||
jz 0f
|
||||
lg %r15,__LC_PANIC_STACK
|
||||
0: aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
|
||||
j mcck_skip
|
||||
j .Lmcck_skip
|
||||
|
||||
#
|
||||
# PSW restart interrupt handler
|
||||
@ -815,69 +815,69 @@ stack_overflow:
|
||||
#endif
|
||||
|
||||
.align 8
|
||||
cleanup_table:
|
||||
.Lcleanup_table:
|
||||
.quad system_call
|
||||
.quad sysc_do_svc
|
||||
.quad sysc_tif
|
||||
.quad sysc_restore
|
||||
.quad sysc_done
|
||||
.quad io_tif
|
||||
.quad io_restore
|
||||
.quad io_done
|
||||
.quad .Lsysc_do_svc
|
||||
.quad .Lsysc_tif
|
||||
.quad .Lsysc_restore
|
||||
.quad .Lsysc_done
|
||||
.quad .Lio_tif
|
||||
.quad .Lio_restore
|
||||
.quad .Lio_done
|
||||
.quad psw_idle
|
||||
.quad psw_idle_end
|
||||
.quad .Lpsw_idle_end
|
||||
|
||||
cleanup_critical:
|
||||
clg %r9,BASED(cleanup_table) # system_call
|
||||
clg %r9,BASED(.Lcleanup_table) # system_call
|
||||
jl 0f
|
||||
clg %r9,BASED(cleanup_table+8) # sysc_do_svc
|
||||
jl cleanup_system_call
|
||||
clg %r9,BASED(cleanup_table+16) # sysc_tif
|
||||
clg %r9,BASED(.Lcleanup_table+8) # .Lsysc_do_svc
|
||||
jl .Lcleanup_system_call
|
||||
clg %r9,BASED(.Lcleanup_table+16) # .Lsysc_tif
|
||||
jl 0f
|
||||
clg %r9,BASED(cleanup_table+24) # sysc_restore
|
||||
jl cleanup_sysc_tif
|
||||
clg %r9,BASED(cleanup_table+32) # sysc_done
|
||||
jl cleanup_sysc_restore
|
||||
clg %r9,BASED(cleanup_table+40) # io_tif
|
||||
clg %r9,BASED(.Lcleanup_table+24) # .Lsysc_restore
|
||||
jl .Lcleanup_sysc_tif
|
||||
clg %r9,BASED(.Lcleanup_table+32) # .Lsysc_done
|
||||
jl .Lcleanup_sysc_restore
|
||||
clg %r9,BASED(.Lcleanup_table+40) # .Lio_tif
|
||||
jl 0f
|
||||
clg %r9,BASED(cleanup_table+48) # io_restore
|
||||
jl cleanup_io_tif
|
||||
clg %r9,BASED(cleanup_table+56) # io_done
|
||||
jl cleanup_io_restore
|
||||
clg %r9,BASED(cleanup_table+64) # psw_idle
|
||||
clg %r9,BASED(.Lcleanup_table+48) # .Lio_restore
|
||||
jl .Lcleanup_io_tif
|
||||
clg %r9,BASED(.Lcleanup_table+56) # .Lio_done
|
||||
jl .Lcleanup_io_restore
|
||||
clg %r9,BASED(.Lcleanup_table+64) # psw_idle
|
||||
jl 0f
|
||||
clg %r9,BASED(cleanup_table+72) # psw_idle_end
|
||||
jl cleanup_idle
|
||||
clg %r9,BASED(.Lcleanup_table+72) # .Lpsw_idle_end
|
||||
jl .Lcleanup_idle
|
||||
0: br %r14
|
||||
|
||||
|
||||
cleanup_system_call:
|
||||
.Lcleanup_system_call:
|
||||
# check if stpt has been executed
|
||||
clg %r9,BASED(cleanup_system_call_insn)
|
||||
clg %r9,BASED(.Lcleanup_system_call_insn)
|
||||
jh 0f
|
||||
mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
|
||||
cghi %r11,__LC_SAVE_AREA_ASYNC
|
||||
je 0f
|
||||
mvc __LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
|
||||
0: # check if stmg has been executed
|
||||
clg %r9,BASED(cleanup_system_call_insn+8)
|
||||
clg %r9,BASED(.Lcleanup_system_call_insn+8)
|
||||
jh 0f
|
||||
mvc __LC_SAVE_AREA_SYNC(64),0(%r11)
|
||||
0: # check if base register setup + TIF bit load has been done
|
||||
clg %r9,BASED(cleanup_system_call_insn+16)
|
||||
clg %r9,BASED(.Lcleanup_system_call_insn+16)
|
||||
jhe 0f
|
||||
# set up saved registers r10 and r12
|
||||
stg %r10,16(%r11) # r10 last break
|
||||
stg %r12,32(%r11) # r12 thread-info pointer
|
||||
0: # check if the user time update has been done
|
||||
clg %r9,BASED(cleanup_system_call_insn+24)
|
||||
clg %r9,BASED(.Lcleanup_system_call_insn+24)
|
||||
jh 0f
|
||||
lg %r15,__LC_EXIT_TIMER
|
||||
slg %r15,__LC_SYNC_ENTER_TIMER
|
||||
alg %r15,__LC_USER_TIMER
|
||||
stg %r15,__LC_USER_TIMER
|
||||
0: # check if the system time update has been done
|
||||
clg %r9,BASED(cleanup_system_call_insn+32)
|
||||
clg %r9,BASED(.Lcleanup_system_call_insn+32)
|
||||
jh 0f
|
||||
lg %r15,__LC_LAST_UPDATE_TIMER
|
||||
slg %r15,__LC_EXIT_TIMER
|
||||
@ -904,21 +904,21 @@ cleanup_system_call:
|
||||
# setup saved register r15
|
||||
stg %r15,56(%r11) # r15 stack pointer
|
||||
# set new psw address and exit
|
||||
larl %r9,sysc_do_svc
|
||||
larl %r9,.Lsysc_do_svc
|
||||
br %r14
|
||||
cleanup_system_call_insn:
|
||||
.Lcleanup_system_call_insn:
|
||||
.quad system_call
|
||||
.quad sysc_stmg
|
||||
.quad sysc_per
|
||||
.quad sysc_vtime+18
|
||||
.quad sysc_vtime+42
|
||||
.quad .Lsysc_stmg
|
||||
.quad .Lsysc_per
|
||||
.quad .Lsysc_vtime+18
|
||||
.quad .Lsysc_vtime+42
|
||||
|
||||
cleanup_sysc_tif:
|
||||
larl %r9,sysc_tif
|
||||
.Lcleanup_sysc_tif:
|
||||
larl %r9,.Lsysc_tif
|
||||
br %r14
|
||||
|
||||
cleanup_sysc_restore:
|
||||
clg %r9,BASED(cleanup_sysc_restore_insn)
|
||||
.Lcleanup_sysc_restore:
|
||||
clg %r9,BASED(.Lcleanup_sysc_restore_insn)
|
||||
je 0f
|
||||
lg %r9,24(%r11) # get saved pointer to pt_regs
|
||||
mvc __LC_RETURN_PSW(16),__PT_PSW(%r9)
|
||||
@ -926,15 +926,15 @@ cleanup_sysc_restore:
|
||||
lmg %r0,%r7,__PT_R0(%r9)
|
||||
0: lmg %r8,%r9,__LC_RETURN_PSW
|
||||
br %r14
|
||||
cleanup_sysc_restore_insn:
|
||||
.quad sysc_done - 4
|
||||
.Lcleanup_sysc_restore_insn:
|
||||
.quad .Lsysc_done - 4
|
||||
|
||||
cleanup_io_tif:
|
||||
larl %r9,io_tif
|
||||
.Lcleanup_io_tif:
|
||||
larl %r9,.Lio_tif
|
||||
br %r14
|
||||
|
||||
cleanup_io_restore:
|
||||
clg %r9,BASED(cleanup_io_restore_insn)
|
||||
.Lcleanup_io_restore:
|
||||
clg %r9,BASED(.Lcleanup_io_restore_insn)
|
||||
je 0f
|
||||
lg %r9,24(%r11) # get saved r11 pointer to pt_regs
|
||||
mvc __LC_RETURN_PSW(16),__PT_PSW(%r9)
|
||||
@ -942,10 +942,10 @@ cleanup_io_restore:
|
||||
lmg %r0,%r7,__PT_R0(%r9)
|
||||
0: lmg %r8,%r9,__LC_RETURN_PSW
|
||||
br %r14
|
||||
cleanup_io_restore_insn:
|
||||
.quad io_done - 4
|
||||
.Lcleanup_io_restore_insn:
|
||||
.quad .Lio_done - 4
|
||||
|
||||
cleanup_idle:
|
||||
.Lcleanup_idle:
|
||||
# copy interrupt clock & cpu timer
|
||||
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
|
||||
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
|
||||
@ -954,7 +954,7 @@ cleanup_idle:
|
||||
mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
|
||||
mvc __TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
|
||||
0: # check if stck & stpt have been executed
|
||||
clg %r9,BASED(cleanup_idle_insn)
|
||||
clg %r9,BASED(.Lcleanup_idle_insn)
|
||||
jhe 1f
|
||||
mvc __CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
|
||||
mvc __TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r2)
|
||||
@ -973,17 +973,17 @@ cleanup_idle:
|
||||
nihh %r8,0xfcfd # clear irq & wait state bits
|
||||
lg %r9,48(%r11) # return from psw_idle
|
||||
br %r14
|
||||
cleanup_idle_insn:
|
||||
.quad psw_idle_lpsw
|
||||
.Lcleanup_idle_insn:
|
||||
.quad .Lpsw_idle_lpsw
|
||||
|
||||
/*
|
||||
* Integer constants
|
||||
*/
|
||||
.align 8
|
||||
.Lcritical_start:
|
||||
.quad __critical_start
|
||||
.quad .L__critical_start
|
||||
.Lcritical_length:
|
||||
.quad __critical_end - __critical_start
|
||||
.quad .L__critical_end - .L__critical_start
|
||||
|
||||
|
||||
#if IS_ENABLED(CONFIG_KVM)
|
||||
@ -1000,25 +1000,25 @@ ENTRY(sie64a)
|
||||
lmg %r0,%r13,0(%r3) # load guest gprs 0-13
|
||||
lg %r14,__LC_GMAP # get gmap pointer
|
||||
ltgr %r14,%r14
|
||||
jz sie_gmap
|
||||
jz .Lsie_gmap
|
||||
lctlg %c1,%c1,__GMAP_ASCE(%r14) # load primary asce
|
||||
sie_gmap:
|
||||
.Lsie_gmap:
|
||||
lg %r14,__SF_EMPTY(%r15) # get control block pointer
|
||||
oi __SIE_PROG0C+3(%r14),1 # we are going into SIE now
|
||||
tm __SIE_PROG20+3(%r14),1 # last exit...
|
||||
jnz sie_done
|
||||
jnz .Lsie_done
|
||||
LPP __SF_EMPTY(%r15) # set guest id
|
||||
sie 0(%r14)
|
||||
sie_done:
|
||||
.Lsie_done:
|
||||
LPP __SF_EMPTY+16(%r15) # set host id
|
||||
ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE
|
||||
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
|
||||
# some program checks are suppressing. C code (e.g. do_protection_exception)
|
||||
# will rewind the PSW by the ILC, which is 4 bytes in case of SIE. Other
|
||||
# instructions between sie64a and sie_done should not cause program
|
||||
# instructions between sie64a and .Lsie_done should not cause program
|
||||
# interrupts. So lets use a nop (47 00 00 00) as a landing pad.
|
||||
# See also HANDLE_SIE_INTERCEPT
|
||||
rewind_pad:
|
||||
.Lrewind_pad:
|
||||
nop 0
|
||||
.globl sie_exit
|
||||
sie_exit:
|
||||
@ -1027,19 +1027,19 @@ sie_exit:
|
||||
lmg %r6,%r14,__SF_GPRS(%r15) # restore kernel registers
|
||||
lg %r2,__SF_EMPTY+24(%r15) # return exit reason code
|
||||
br %r14
|
||||
sie_fault:
|
||||
.Lsie_fault:
|
||||
lghi %r14,-EFAULT
|
||||
stg %r14,__SF_EMPTY+24(%r15) # set exit reason code
|
||||
j sie_exit
|
||||
|
||||
.align 8
|
||||
.Lsie_critical:
|
||||
.quad sie_gmap
|
||||
.quad .Lsie_gmap
|
||||
.Lsie_critical_length:
|
||||
.quad sie_done - sie_gmap
|
||||
.quad .Lsie_done - .Lsie_gmap
|
||||
|
||||
EX_TABLE(rewind_pad,sie_fault)
|
||||
EX_TABLE(sie_exit,sie_fault)
|
||||
EX_TABLE(.Lrewind_pad,.Lsie_fault)
|
||||
EX_TABLE(sie_exit,.Lsie_fault)
|
||||
#endif
|
||||
|
||||
.section .rodata, "a"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user