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linux passes the 6th argument in %ebp; handle that so that we can get mmap2

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working. Also tell us which syscall has too many args. Thanks Frank!
This commit is contained in:
christos 2002-03-22 14:49:37 +00:00
parent 12d0f60218
commit 2df30ebb25
1 changed files with 13 additions and 8 deletions
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21
sys/arch/i386/i386/linux_syscall.c
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@ -1,4 +1,4 @@
/* $NetBSD: linux_syscall.c,v 1.17 2001/11/15 07:03:30 lukem Exp $ */
/* $NetBSD: linux_syscall.c,v 1.18 2002/03/22 14:49:37 christos Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_syscall.c,v 1.17 2001/11/15 07:03:30 lukem Exp $");
__KERNEL_RCSID(0, "$NetBSD: linux_syscall.c,v 1.18 2002/03/22 14:49:37 christos Exp $");
#if defined(_KERNEL_OPT)
#include "opt_syscall_debug.h"
@ -108,12 +108,15 @@ linux_syscall_plain(frame)
code &= (LINUX_SYS_NSYSENT - 1);
callp += code;
argsize = callp->sy_argsize;
printf("%d %d\n", code, argsize);
if (argsize) {
/*
* Linux passes the args in ebx, ecx, edx, esi, edi, in
* Linux passes the args in ebx, ecx, edx, esi, edi, ebp, in
* increasing order.
*/
switch (argsize >> 2) {
case 6:
args[5] = frame.tf_ebp;
case 5:
args[4] = frame.tf_edi;
case 4:
@ -126,8 +129,8 @@ linux_syscall_plain(frame)
args[0] = frame.tf_ebx;
break;
default:
panic("linux syscall bogus argument size %d",
argsize);
panic("linux syscall %d bogus argument size %d",
code, argsize);
break;
}
}
@ -192,10 +195,12 @@ linux_syscall_fancy(frame)
argsize = callp->sy_argsize;
if (argsize) {
/*
* Linux passes the args in ebx, ecx, edx, esi, edi, in
* Linux passes the args in ebx, ecx, edx, esi, edi, ebp, in
* increasing order.
*/
switch (argsize >> 2) {
case 6:
args[5] = frame.tf_ebp;
case 5:
args[4] = frame.tf_edi;
case 4:
@ -208,8 +213,8 @@ linux_syscall_fancy(frame)
args[0] = frame.tf_ebx;
break;
default:
panic("linux syscall bogus argument size %d",
argsize);
panic("linux syscall %d bogus argument size %d",
code, argsize);
break;
}
}