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From: Jung-uk Kim <jkim@FreeBSD.org>
Date: Thu, 5 Aug 2010 19:12:36 +0000 (UTC)
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Subject: svn commit: r210885 - head/sys/compat/x86bios
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Author: jkim
Date: Thu Aug  5 19:12:35 2010
New Revision: 210885
URL: http://svn.freebsd.org/changeset/base/210885

Log:
  Do not copy stack pointer and flags.  These registers are unconditionally
  destroyed from vm86_prepcall().

Modified:
  head/sys/compat/x86bios/x86bios.c

Modified: head/sys/compat/x86bios/x86bios.c
==============================================================================
--- head/sys/compat/x86bios/x86bios.c	Thu Aug  5 19:11:13 2010	(r210884)
+++ head/sys/compat/x86bios/x86bios.c	Thu Aug  5 19:12:35 2010	(r210885)
@@ -84,13 +84,10 @@ x86bios_emu2vmf(struct x86emu_regs *regs
 
 	vmf->vmf_ds = regs->R_DS;
 	vmf->vmf_es = regs->R_ES;
-	vmf->vmf_ss = regs->R_SS;
-	vmf->vmf_flags = regs->R_FLG;
 	vmf->vmf_ax = regs->R_AX;
 	vmf->vmf_bx = regs->R_BX;
 	vmf->vmf_cx = regs->R_CX;
 	vmf->vmf_dx = regs->R_DX;
-	vmf->vmf_sp = regs->R_SP;
 	vmf->vmf_bp = regs->R_BP;
 	vmf->vmf_si = regs->R_SI;
 	vmf->vmf_di = regs->R_DI;
@@ -102,13 +99,10 @@ x86bios_vmf2emu(struct vm86frame *vmf, s
 
 	regs->R_DS = vmf->vmf_ds;
 	regs->R_ES = vmf->vmf_es;
-	regs->R_SS = vmf->vmf_ss;
-	regs->R_FLG = vmf->vmf_flags;
 	regs->R_AX = vmf->vmf_ax;
 	regs->R_BX = vmf->vmf_bx;
 	regs->R_CX = vmf->vmf_cx;
 	regs->R_DX = vmf->vmf_dx;
-	regs->R_SP = vmf->vmf_sp;
 	regs->R_BP = vmf->vmf_bp;
 	regs->R_SI = vmf->vmf_si;
 	regs->R_DI = vmf->vmf_di;