* Table is based upon EAS2.6 (Oct 1999)
*/
-#include <linux/config.h>
#include <asm/asmmacro.h>
#include <asm/break.h>
movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
mov r21=cr.ipsr
mov r31=pr
+ mov r24=PERCPU_ADDR
;;
#ifdef CONFIG_DISABLE_VHPT
shr.u r22=r16,61 // get the region number into r21
(p8) mov r29=b0 // save b0
(p8) br.cond.dptk dtlb_fault
#endif
+ cmp.ge p10,p11=r16,r24 // access to per_cpu_data?
+ tbit.z p12,p0=r16,61 // access to region 6?
+ mov r25=PERCPU_PAGE_SHIFT << 2
+ mov r26=PERCPU_PAGE_SIZE
+ nop.m 0
+ nop.b 0
+ ;;
+(p10) mov r19=IA64_KR(PER_CPU_DATA)
+(p11) and r19=r19,r16 // clear non-ppn fields
extr.u r23=r21,IA64_PSR_CPL0_BIT,2 // extract psr.cpl
and r22=IA64_ISR_CODE_MASK,r20 // get the isr.code field
tbit.nz p6,p7=r20,IA64_ISR_SP_BIT // is speculation bit on?
- shr.u r18=r16,57 // move address bit 61 to bit 4
- and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
tbit.nz p9,p0=r20,IA64_ISR_NA_BIT // is non-access bit on?
;;
- andcm r18=0x10,r18 // bit 4=~address-bit(61)
+(p10) sub r19=r19,r26
+(p10) mov cr.itir=r25
cmp.ne p8,p0=r0,r23
(p9) cmp.eq.or.andcm p6,p7=IA64_ISR_CODE_LFETCH,r22 // check isr.code field
+(p12) dep r17=-1,r17,4,1 // set ma=UC for region 6 addr
(p8) br.cond.spnt page_fault
dep r21=-1,r21,IA64_PSR_ED_BIT,1
- or r19=r19,r17 // insert PTE control bits into r19
;;
- or r19=r19,r18 // set bit 4 (uncached) if the access was to region 6
+ or r19=r19,r17 // insert PTE control bits into r19
(p6) mov cr.ipsr=r21
;;
(p7) itc.d r19 // insert the TLB entry
(p8) adds r28=16,r28 // A switch cr.iip to next bundle
(p9) adds r8=1,r8 // A increment ei to next slot
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ ;;
+ mov b6=r30 // I0 setup syscall handler branch reg early
+#else
nop.i 0
;;
+#endif
mov.m r25=ar.unat // M2 (5 cyc)
dep r29=r8,r29,41,2 // I0 insert new ei into cr.ipsr
//
///////////////////////////////////////////////////////////////////////
st1 [r16]=r0 // M2|3 clear current->thread.on_ustack flag
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ mov.m r30=ar.itc // M get cycle for accounting
+#else
mov b6=r30 // I0 setup syscall handler branch reg early
+#endif
cmp.eq pKStk,pUStk=r0,r17 // A were we on kernel stacks already?
and r9=_TIF_SYSCALL_TRACEAUDIT,r9 // A mask trace or audit
cmp.eq p14,p0=r9,r0 // A are syscalls being traced/audited?
br.call.sptk.many b7=ia64_syscall_setup // B
1:
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ // mov.m r30=ar.itc is called in advance, and r13 is current
+ add r16=TI_AC_STAMP+IA64_TASK_SIZE,r13 // A
+ add r17=TI_AC_LEAVE+IA64_TASK_SIZE,r13 // A
+(pKStk) br.cond.spnt .skip_accounting // B unlikely skip
+ ;;
+ ld8 r18=[r16],TI_AC_STIME-TI_AC_STAMP // M get last stamp
+ ld8 r19=[r17],TI_AC_UTIME-TI_AC_LEAVE // M time at leave
+ ;;
+ ld8 r20=[r16],TI_AC_STAMP-TI_AC_STIME // M cumulated stime
+ ld8 r21=[r17] // M cumulated utime
+ sub r22=r19,r18 // A stime before leave
+ ;;
+ st8 [r16]=r30,TI_AC_STIME-TI_AC_STAMP // M update stamp
+ sub r18=r30,r19 // A elapsed time in user
+ ;;
+ add r20=r20,r22 // A sum stime
+ add r21=r21,r18 // A sum utime
+ ;;
+ st8 [r16]=r20 // M update stime
+ st8 [r17]=r21 // M update utime
+ ;;
+.skip_accounting:
+#endif
mov ar.rsc=0x3 // M2 set eager mode, pl 0, LE, loadrs=0
nop 0
bsw.1 // B (6 cyc) regs are saved, switch to bank 1
* - r27: saved ar.rsc
* - r28: saved cr.iip
* - r29: saved cr.ipsr
+ * - r30: ar.itc for accounting (don't touch)
* - r31: saved pr
* - b0: original contents (to be saved)
* On exit:
DBG_FAULT(16)
FAULT(16)
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING
+ /*
+ * There is no particular reason for this code to be here, other than
+ * that there happens to be space here that would go unused otherwise.
+ * If this fault ever gets "unreserved", simply moved the following
+ * code to a more suitable spot...
+ *
+ * account_sys_enter is called from SAVE_MIN* macros if accounting is
+ * enabled and if the macro is entered from user mode.
+ */
+ENTRY(account_sys_enter)
+ // mov.m r20=ar.itc is called in advance, and r13 is current
+ add r16=TI_AC_STAMP+IA64_TASK_SIZE,r13
+ add r17=TI_AC_LEAVE+IA64_TASK_SIZE,r13
+ ;;
+ ld8 r18=[r16],TI_AC_STIME-TI_AC_STAMP // time at last check in kernel
+ ld8 r19=[r17],TI_AC_UTIME-TI_AC_LEAVE // time at left from kernel
+ ;;
+ ld8 r23=[r16],TI_AC_STAMP-TI_AC_STIME // cumulated stime
+ ld8 r21=[r17] // cumulated utime
+ sub r22=r19,r18 // stime before leave kernel
+ ;;
+ st8 [r16]=r20,TI_AC_STIME-TI_AC_STAMP // update stamp
+ sub r18=r20,r19 // elapsed time in user mode
+ ;;
+ add r23=r23,r22 // sum stime
+ add r21=r21,r18 // sum utime
+ ;;
+ st8 [r16]=r23 // update stime
+ st8 [r17]=r21 // update utime
+ ;;
+ br.ret.sptk.many rp
+END(account_sys_enter)
+#endif
+
.org ia64_ivt+0x4400
/////////////////////////////////////////////////////////////////////////////////////////
// 0x4400 Entry 17 (size 64 bundles) Reserved
projects / linux-2.6-omap-h63xx.git / blobdiff