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on (fast) syscall exit, force %ds to its standard value --

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it might have been modified by a netbsd32 process
This commit is contained in:
drochner 2004-03-01 12:10:41 +00:00
parent 7925327e58
commit 98dbb9f046
1 changed files with 4 additions and 2 deletions
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6
sys/arch/amd64/amd64/locore.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore.S,v 1.10 2004/02/19 17:18:38 drochner Exp $ */
/* $NetBSD: locore.S,v 1.11 2004/03/01 12:10:41 drochner Exp $ */
/*
* Copyright-o-rama!
@ -1227,11 +1227,13 @@ syscall_return:
movw TF_FS(%rsp),%fs
movw TF_GS(%rsp),%gs
INTR_RESTORE_GPRS
movw $(LSEL(LUDATA_SEL, SEL_UPL)),%r11
movw %r11,%ds
addq $48,%rsp
popq %rcx /* return rip */
addq $8,%rsp
popq %r11 /* flags as set by sysret insn */
movq (%rsp),%rsp
movq %ss:(%rsp),%rsp
sysretq
#ifdef DIAGNOSTIC