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Initialize %fs and %gs from %ds.
This seems to stabilize the APM-bios on my Gateway Handbook, and it makes sense in general too.
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parent
f0e1ab7bc7
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=4217
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
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* $Id: locore.s,v 1.42 1994/10/30 20:09:12 bde Exp $
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* $Id: locore.s,v 1.43 1994/10/31 17:20:15 joerg Exp $
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*/
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/*
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@ -178,6 +178,11 @@ NON_GPROF_ENTRY(btext)
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pushl $PSL_MBO
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popfl
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/* Don't trust what the BIOS gives for %fs and %gs. */
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mov %ds, %ax
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mov %ax, %fs
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mov %ax, %gs
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/*
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* This code is called in different ways depending on what loaded
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* and started the kernel. This is used to detect how we get the
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
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* $Id: locore.s,v 1.42 1994/10/30 20:09:12 bde Exp $
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* $Id: locore.s,v 1.43 1994/10/31 17:20:15 joerg Exp $
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*/
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/*
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@ -178,6 +178,11 @@ NON_GPROF_ENTRY(btext)
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pushl $PSL_MBO
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popfl
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/* Don't trust what the BIOS gives for %fs and %gs. */
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mov %ds, %ax
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mov %ax, %fs
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mov %ax, %gs
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/*
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* This code is called in different ways depending on what loaded
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* and started the kernel. This is used to detect how we get the
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)locore.s 7.3 (Berkeley) 5/13/91
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* $Id: locore.s,v 1.42 1994/10/30 20:09:12 bde Exp $
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* $Id: locore.s,v 1.43 1994/10/31 17:20:15 joerg Exp $
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*/
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/*
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@ -178,6 +178,11 @@ NON_GPROF_ENTRY(btext)
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pushl $PSL_MBO
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popfl
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/* Don't trust what the BIOS gives for %fs and %gs. */
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mov %ds, %ax
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mov %ax, %fs
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mov %ax, %gs
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/*
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* This code is called in different ways depending on what loaded
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* and started the kernel. This is used to detect how we get the
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