* R15 - kernel stack pointer
*/
+ .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
+ lm %r10,%r11,\lc_from
+ sl %r10,\lc_to
+ sl %r11,\lc_to+4
+ bc 3,BASED(0f)
+ sl %r10,BASED(.Lc_1)
+0: al %r10,\lc_sum
+ al %r11,\lc_sum+4
+ bc 12,BASED(1f)
+ al %r10,BASED(.Lc_1)
+1: stm %r10,%r11,\lc_sum
+ .endm
+#endif
+
.macro SAVE_ALL_BASE savearea
stm %r12,%r15,\savearea
l %r13,__LC_SVC_NEW_PSW+4 # load &system_call to %r13
ni __LC_RETURN_PSW+1,0xfd # clear wait state bit
.endif
lm %r0,%r15,SP_R0(%r15) # load gprs 0-15 of user
+ STORE_TIMER __LC_EXIT_TIMER
lpsw __LC_RETURN_PSW # back to caller
.endm
l %r15,__THREAD_ksp(%r3) # load kernel stack from next->tss.ksp
lm %r6,%r15,__SF_GPRS(%r15)# load __switch_to registers of next task
st %r3,__LC_CURRENT # __LC_CURRENT = current task struct
+ lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
l %r3,__THREAD_info(%r3) # load thread_info from task struct
st %r3,__LC_THREAD_INFO
ahi %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
lh %r7,0x8a # get svc number from lowcore
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+sysc_vtime:
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ bz BASED(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:
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
sla %r7,2 # *4 and test for svc 0
basr %r14,%r1 # call do_signal
tm __TI_flags+3(%r9),_TIF_RESTART_SVC
bo BASED(sysc_restart)
+ tm __TI_flags+3(%r9),_TIF_SINGLE_STEP
+ bo BASED(sysc_singlestep)
b BASED(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
bnz BASED(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 ?
+ bz BASED(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
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
l %r3,__LC_PGM_ILC # load program interruption code
la %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 ?
+ bz BASED(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
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
l %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 ?
+ bz BASED(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
lh %r7,0x8a # get svc number from lowcore
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
l %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+16
SAVE_ALL __LC_IO_OLD_PSW,__LC_SAVE_AREA+16,0
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ bz BASED(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
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
l %r1,BASED(.Ldo_IRQ) # load address of do_IRQ
la %r2,SP_PTREGS(%r15) # address of register-save area
.globl ext_int_handler
ext_int_handler:
+ STORE_TIMER __LC_ASYNC_ENTER_TIMER
stck __LC_INT_CLOCK
SAVE_ALL_BASE __LC_SAVE_AREA+16
SAVE_ALL __LC_EXT_OLD_PSW,__LC_SAVE_AREA+16,0
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ bz BASED(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
l %r9,__LC_THREAD_INFO # load pointer to thread_info struct
la %r2,SP_PTREGS(%r15) # address of register-save area
lh %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+32
SAVE_ALL __LC_MCK_OLD_PSW,__LC_SAVE_AREA+32,0
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ bz BASED(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
l %r1,BASED(.Ls390_mcck)
basr %r14,%r1 # call machine check handler
mcck_return:
br %r14
cleanup_system_call:
- mvc __LC_RETURN_PSW(4),0(%r12)
- clc 4(4,%r12),BASED(cleanup_table_system_call)
- bne BASED(0f)
+ mvc __LC_RETURN_PSW(8),0(%r12)
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+4)
+ bh BASED(0f)
+ mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
+0: clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+8)
+ bhe BASED(cleanup_vtime)
+#endif
+ clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn)
+ bh BASED(0f)
mvc __LC_SAVE_AREA(16),__LC_SAVE_AREA+16
0: st %r13,__LC_SAVE_AREA+20
SAVE_ALL __LC_SVC_OLD_PSW,__LC_SAVE_AREA,1
st %r15,__LC_SAVE_AREA+28
lh %r7,0x8a
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+cleanup_vtime:
+ clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+12)
+ bhe BASED(cleanup_stime)
+ tm SP_PSW+1(%r15),0x01 # interrupting from user ?
+ bz BASED(cleanup_novtime)
+ UPDATE_VTIME __LC_EXIT_TIMER,__LC_SYNC_ENTER_TIMER,__LC_USER_TIMER
+cleanup_stime:
+ clc __LC_RETURN_PSW+4(4),BASED(cleanup_system_call_insn+16)
+ bh BASED(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+4(4),BASED(cleanup_table_system_call+4)
la %r12,__LC_RETURN_PSW
br %r14
+cleanup_system_call_insn:
+ .long sysc_saveall + 0x80000000
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ .long system_call + 0x80000000
+ .long sysc_vtime + 0x80000000
+ .long sysc_stime + 0x80000000
+ .long sysc_update + 0x80000000
+#endif
cleanup_sysc_return:
mvc __LC_RETURN_PSW(4),0(%r12)
br %r14
cleanup_sysc_leave:
- clc 4(4,%r12),BASED(cleanup_sysc_leave_lpsw)
+ clc 4(4,%r12),BASED(cleanup_sysc_leave_insn)
+ be BASED(0f)
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mvc __LC_EXIT_TIMER(8),__LC_ASYNC_ENTER_TIMER
+ clc 4(4,%r12),BASED(cleanup_sysc_leave_insn+4)
be BASED(0f)
+#endif
mvc __LC_RETURN_PSW(8),SP_PSW(%r15)
mvc __LC_SAVE_AREA+16(16),SP_R12(%r15)
lm %r0,%r11,SP_R0(%r15)
l %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
+ .long sysc_leave + 14 + 0x80000000
+#endif
.long sysc_leave + 10 + 0x80000000
/*
.L0x028: .short 0x028
.L0x030: .short 0x030
.L0x038: .short 0x038
+.Lc_1: .long 1
/*
* Symbol constants
git://git.onelab.eu / linux-2.6.git / blobdiff