#define BASED(name) name-system_call(%r13)
+ .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
+ lg %r10,\lc_from
+ slg %r10,\lc_to
+ alg %r10,\lc_sum
+ stg %r10,\lc_sum
+ .endm
+#endif
+
/*
* Register usage in interrupt handlers:
* R9 - pointer to current task structure
ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
.endif
lmg %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
+ STORE_TIMER __LC_EXIT_TIMER
lpswe __LC_RETURN_PSW # back to caller
.endm
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
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
stg %r3,__LC_THREAD_INFO
aghi %r3,STACK_SIZE
.globl system_call
system_call:
+ STORE_TIMER __LC_SYNC_ENTER_TIMER
+sysc_saveall:
SAVE_ALL_BASE __LC_SAVE_AREA
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
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 ?
+ jz sysc_do_svc
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
+sysc_stime:
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+sysc_update:
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
+#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
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
+ jo sysc_singlestep
j sysc_leave # out of here, do NOT recheck
#
* we just ignore the PER event (FIXME: is there anything we have to do
* for LPSW?).
*/
+ 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
SAVE_ALL __LC_PGM_OLD_PSW,__LC_SAVE_AREA,1
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz pgm_no_vtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
+pgm_no_vtime:
+#endif
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
lgf %r3,__LC_PGM_ILC # load program interruption code
lghi %r8,0x7f
#
pgm_per_std:
SAVE_ALL __LC_PGM_OLD_PSW,__LC_SAVE_AREA,1
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz pgm_no_vtime2
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
+pgm_no_vtime2:
+#endif
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
#
pgm_svcper:
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz pgm_no_vtime3
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ 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
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
lg %r1,__TI_task(%r9)
*/
.globl io_int_handler
io_int_handler:
+ STORE_TIMER __LC_ASYNC_ENTER_TIMER
stck __LC_INT_CLOCK
SAVE_ALL_BASE __LC_SAVE_AREA+32
SAVE_ALL __LC_IO_OLD_PSW,__LC_SAVE_AREA+32,0
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz io_no_vtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+io_no_vtime:
+#endif
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # address of register-save area
brasl %r14,do_IRQ # call standard irq handler
*/
.globl ext_int_handler
ext_int_handler:
+ STORE_TIMER __LC_ASYNC_ENTER_TIMER
stck __LC_INT_CLOCK
SAVE_ALL_BASE __LC_SAVE_AREA+32
SAVE_ALL __LC_EXT_OLD_PSW,__LC_SAVE_AREA+32,0
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz ext_no_vtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ext_no_vtime:
+#endif
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # address of register-save area
llgh %r3,__LC_EXT_INT_CODE # get interruption code
*/
.globl mcck_int_handler
mcck_int_handler:
+ STORE_TIMER __LC_ASYNC_ENTER_TIMER
SAVE_ALL_BASE __LC_SAVE_AREA+64
SAVE_ALL __LC_MCK_OLD_PSW,__LC_SAVE_AREA+64,0
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz mcck_no_vtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_ASYNC_ENTER_TIMER,__LC_USER_TIMER
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_ASYNC_ENTER_TIMER
+mcck_no_vtime:
+#endif
brasl %r14,s390_do_machine_check
mcck_return:
RESTORE_ALL 0
br %r14
cleanup_system_call:
- mvc __LC_RETURN_PSW(8),0(%r12)
- clc 8(8,%r12),BASED(cleanup_table_system_call)
- jne 0f
+ mvc __LC_RETURN_PSW(16),0(%r12)
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+8)
+ jh 0f
+ mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
+0: clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+16)
+ jhe cleanup_vtime
+#endif
+ clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn)
+ jh 0f
mvc __LC_SAVE_AREA(32),__LC_SAVE_AREA+32
0: stg %r13,__LC_SAVE_AREA+40
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
stg %r15,__LC_SAVE_AREA+56
llgh %r7,__LC_SVC_INT_CODE
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+cleanup_vtime:
+ clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+24)
+ jhe cleanup_stime
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ jz cleanup_novtime
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
+cleanup_stime:
+ clc __LC_RETURN_PSW+8(8),BASED(cleanup_system_call_insn+32)
+ jh cleanup_update
+ UPDATE_VTIME __LC_LAST_UPDATE_TIMER,__LC_EXIT_TIMER,__LC_SYSTEM_TIMER
+cleanup_update:
+ mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
+cleanup_novtime:
+#endif
mvc __LC_RETURN_PSW+8(8),BASED(cleanup_table_system_call+8)
la %r12,__LC_RETURN_PSW
br %r14
+cleanup_system_call_insn:
+ .quad sysc_saveall
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .quad system_call
+ .quad sysc_vtime
+ .quad sysc_stime
+ .quad sysc_update
+#endif
cleanup_sysc_return:
mvc __LC_RETURN_PSW(8),0(%r12)
br %r14
cleanup_sysc_leave:
- clc 8(8,%r12),BASED(cleanup_sysc_leave_lpsw)
+ clc 8(8,%r12),BASED(cleanup_sysc_leave_insn)
+ je 0f
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ clc 8(8,%r12),BASED(cleanup_sysc_leave_insn+8)
je 0f
+#endif
mvc __LC_RETURN_PSW(16),SP_PSW(%r15)
mvc __LC_SAVE_AREA+32(32),SP_R12(%r15)
lmg %r0,%r11,SP_R0(%r15)
lg %r15,SP_R15(%r15)
0: la %r12,__LC_RETURN_PSW
br %r14
-cleanup_sysc_leave_lpsw:
+cleanup_sysc_leave_insn:
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .quad sysc_leave + 16
+#endif
.quad sysc_leave + 12
/*