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Also reset %fs and %gs when delivering a signal.

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This commit is contained in:
mycroft 1996-01-08 20:12:20 +00:00
parent 47e444bf50
commit d74e9d43ab
1 changed files with 7 additions and 5 deletions
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12
sys/arch/i386/i386/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.184 1996/01/08 13:51:34 mycroft Exp $ */
/* $NetBSD: machdep.c,v 1.185 1996/01/08 20:12:20 mycroft Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995 Charles M. Hannum. All rights reserved.
@ -587,14 +587,16 @@ sendsig(catcher, sig, mask, code)
/*
* Build context to run handler in.
*/
tf->tf_esp = (int)fp;
__asm("movl %w0,%%gs" : : "r" (GSEL(GUDATA_SEL, SEL_UPL)));
__asm("movl %w0,%%fs" : : "r" (GSEL(GUDATA_SEL, SEL_UPL)));
tf->tf_es = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_ds = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_eip = (int)(((char *)PS_STRINGS) - (esigcode - sigcode));
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
#ifdef VM86
tf->tf_eflags &= ~PSL_VM;
#endif
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
tf->tf_ds = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_es = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_esp = (int)fp;
tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL);
}