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| author |   mickey <mickey@openbsd.org> | 2002-02-04 19:52:21 +0000 |
|---|---|---|
| committer | mickey <mickey@openbsd.org> | 2002-02-04 19:52:21 +0000 |
| commit | 546c9280987c0396e92f7425b68954e13488bcfd (patch) | |
| tree | 0e1ad50059dc1309ed285a3dd6a0f96512864c2b | |
| parent | Cleanup mountroot-related definitions. (diff) | |
| download | wireguard-openbsd-546c9280987c0396e92f7425b68954e13488bcfd.tar.xz wireguard-openbsd-546c9280987c0396e92f7425b68954e13488bcfd.zip | |
switch onto temp stack for exit2(); implementation from netbsd
| -rw-r--r-- | sys/arch/hppa/hppa/locore.S | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/sys/arch/hppa/hppa/locore.S b/sys/arch/hppa/hppa/locore.S index 81fad7a290c..74791dfcbe1 100644 --- a/sys/arch/hppa/hppa/locore.S +++ b/sys/arch/hppa/hppa/locore.S @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.S,v 1.48 2002/02/03 01:30:38 mickey Exp $ */ +/* $OpenBSD: locore.S,v 1.49 2002/02/04 19:52:21 mickey Exp $ */ /* * Copyright (c) 1998-2001 Michael Shalayeff @@ -101,8 +101,11 @@ .section .bss .export pdc_stack, data -pdc_stack +pdc_stack /* temp stack for PDC call, must be > 9k */ .comm 4*NBPG + .export exit_stack, data +exit_stack /* temp stack used during exit2() */ + .comm 2*NBPG kernelmapped /* set when kernel is mapped */ .comm 4 .export fpu_csw, data @@ -2588,7 +2591,17 @@ ENTRY(switch_exit,0) ldi HPPA_PID_KERNEL, t4 mtctl t4, pidr2 - /* XXX we need to switch to some stupid stack here */ + /* switch onto the temporary stack */ + ldil L%exit_stack, t4 + ldo HPPA_FRAME_SIZE(t4), sp + stw r0, HPPA_FRAME_PSP(sp) + stw r0, HPPA_FRAME_CRP(sp) + + /* start the stack frame for our callee */ + copy sp, r3 + ldo HPPA_FRAME_SIZE(sp), sp + stw r3, HPPA_FRAME_PSP(sp) + /* arg0 -- oldproc */ .import exit2, code ldil L%exit2, t2 |