Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

1. fill in the ldt.sd_xx field, for total compat with linux.

Browse Source 
2. in setregs, use gdt's instead of ldt's because linux wants to play with
   all the ldts. Apparently linuxthreads uses ldt's to allocate space for
   pthread_t's.
This commit is contained in:
christos 2002-03-29 17:01:49 +00:00
parent e6ef08a13e
commit c9e808f0ee
1 changed files with 39 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
sys/compat/linux/arch/i386/linux_machdep.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: linux_machdep.c,v 1.72 2002/03/22 18:39:23 christos Exp $ */
/* $NetBSD: linux_machdep.c,v 1.73 2002/03/29 17:01:49 christos Exp $ */
/*-
* Copyright (c) 1995, 2000 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_machdep.c,v 1.72 2002/03/22 18:39:23 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: linux_machdep.c,v 1.73 2002/03/29 17:01:49 christos Exp $");
#if defined(_KERNEL_OPT)
#include "opt_vm86.h"
@ -133,12 +133,44 @@ linux_setregs(p, epp, stack)
u_long stack;
{
struct pcb *pcb = &p->p_addr->u_pcb;
struct trapframe *tf;
setregs(p, epp, stack);
if (i386_use_fxsave)
#if NNPX > 0
/* If we were using the FPU, forget about it. */
if (npxproc == p)
npxdrop();
#endif
#ifdef USER_LDT
pmap_ldt_cleanup(p);
#endif
p->p_md.md_flags &= ~MDP_USEDFPU;
pcb->pcb_flags = 0;
if (i386_use_fxsave) {
pcb->pcb_savefpu.sv_xmm.sv_env.en_cw = __Linux_NPXCW__;
else
pcb->pcb_savefpu.sv_xmm.sv_env.en_mxcsr = __INITIAL_MXCSR__;
} else
pcb->pcb_savefpu.sv_87.sv_env.en_cw = __Linux_NPXCW__;
tf = p->p_md.md_regs;
tf->tf_gs = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_fs = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_es = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_ds = GSEL(GUDATA_SEL, SEL_UPL);
tf->tf_edi = 0;
tf->tf_esi = 0;
tf->tf_ebp = 0;
tf->tf_ebx = (int)p->p_psstr;
tf->tf_edx = 0;
tf->tf_ecx = 0;
tf->tf_eax = 0;
tf->tf_eip = epp->ep_entry;
tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL);
tf->tf_eflags = PSL_USERSET;
tf->tf_esp = stack;
tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL);
}
/*
@ -447,6 +479,8 @@ linux_write_ldt(p, uap, retval)
sd.sd_gran = ldt_info.limit_in_pages;
if (!oldmode)
sd.sd_xx = ldt_info.useable;
else
sd.sd_xx = 0;
}
sg = stackgap_init(p, 0);
sl.start = ldt_info.entry_number;