diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 1999-12-12 03:31:24 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 1999-12-12 03:31:24 +0000 |
| commit | 7ce53302fb39b617a8b44bea4abf417d703e80ef (patch) | |
| tree | b6071a622d69445a2a81f632752b96f348861394 /sys/arch | |
| parent | 06b24111cbe26140dd6be571381f412f04876785 (diff) | |
they say that cr 24-31 are for interrupt handlers use, so pdc may mangle those
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/hppa/hppa/locore.S | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/sys/arch/hppa/hppa/locore.S b/sys/arch/hppa/hppa/locore.S index 0aa3b39e309..5f1f10ac276 100644 --- a/sys/arch/hppa/hppa/locore.S +++ b/sys/arch/hppa/hppa/locore.S @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.S,v 1.21 1999/11/25 18:47:45 mickey Exp $ */ +/* $OpenBSD: locore.S,v 1.22 1999/12/12 03:31:23 mickey Exp $ */ /* * Copyright (c) 1998,1999 Michael Shalayeff @@ -332,7 +332,7 @@ ENTRY(pdc_call) ldil L%pdc_stack, ret1 pdc_call_unmapped1 - ldo HPPA_FRAME_SIZE+16*4(ret1), ret1 + ldo HPPA_FRAME_SIZE+24*4(ret1), ret1 stw sp, HPPA_FRAME_PSP(ret1) copy arg2, arg0 @@ -356,6 +356,24 @@ pdc_call_unmapped1 stw t3, HPPA_FRAME_ARG(10)(ret1) stw t4, HPPA_FRAME_ARG(11)(ret1) + /* save temp control regs */ + mfctl cr24, t1 + mfctl cr25, t2 + mfctl cr26, t3 + mfctl cr27, t4 + stw t1, HPPA_FRAME_ARG(12)(ret1) + stw t2, HPPA_FRAME_ARG(13)(ret1) + stw t3, HPPA_FRAME_ARG(14)(ret1) + stw t4, HPPA_FRAME_ARG(15)(ret1) + mfctl cr28, t1 + mfctl cr29, t2 + mfctl cr30, t3 + mfctl cr31, t4 + stw t1, HPPA_FRAME_ARG(16)(ret1) + stw t2, HPPA_FRAME_ARG(17)(ret1) + stw t3, HPPA_FRAME_ARG(18)(ret1) + stw t4, HPPA_FRAME_ARG(19)(ret1) + comb,= r0, ret0, pdc_call_unmapped2 nop @@ -366,8 +384,8 @@ pdc_call_unmapped1 ldi PSW_Q, arg0 /* (!pdc_flag && args[0] == PDC_PIM)? PSW_M:0) */ break HPPA_BREAK_KERNEL, HPPA_BREAK_SET_PSW nop - stw t1, HPPA_FRAME_ARG(12)(ret1) - stw ret0, HPPA_FRAME_ARG(13)(ret1) + stw t1, HPPA_FRAME_ARG(22)(ret1) + stw ret0, HPPA_FRAME_ARG(23)(ret1) copy t4, arg0 pdc_call_unmapped2 @@ -377,6 +395,24 @@ pdc_call_unmapped2 bv,n (r31) nop + /* load temp control regs */ + ldw HPPA_FRAME_ARG(12)(sp), t1 + ldw HPPA_FRAME_ARG(13)(sp), t2 + ldw HPPA_FRAME_ARG(14)(sp), t3 + ldw HPPA_FRAME_ARG(15)(sp), t4 + mtctl t1, cr24 + mtctl t2, cr25 + mtctl t3, cr26 + mtctl t4, cr27 + ldw HPPA_FRAME_ARG(16)(sp), t1 + ldw HPPA_FRAME_ARG(17)(sp), t2 + ldw HPPA_FRAME_ARG(18)(sp), t3 + ldw HPPA_FRAME_ARG(19)(sp), t4 + mtctl t1, cr28 + mtctl t2, cr29 + mtctl t3, cr30 + mtctl t4, cr31 + copy sp, t4 ldw HPPA_FRAME_PSP(t4), sp @@ -386,8 +422,8 @@ pdc_call_unmapped2 nop copy ret0, t3 - ldw HPPA_FRAME_ARG(12)(t4), t1 - ldw HPPA_FRAME_ARG(13)(t4), arg0 + ldw HPPA_FRAME_ARG(22)(t4), t1 + ldw HPPA_FRAME_ARG(23)(t4), arg0 break HPPA_BREAK_KERNEL, HPPA_BREAK_SET_PSW nop copy t3, ret0 @@ -1769,8 +1805,8 @@ ENTRY(microtime) add 1, t2, t2 addb,< t2, t3, microtime_no - add 1, t1, t1 + copy t3, t2 microtime_no |