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

Use our own function to copy traps. We cannot use memcpy() anymore

Browse Source 
because the destination may be zero.
This commit is contained in:
hannken 2005-12-31 14:09:02 +00:00
parent 3bb1c71f4a
commit 3e4ced3152
1 changed files with 20 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
sys/arch/evbppc/explora/machdep.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.9 2005/12/24 22:45:35 perry Exp $ */
/* $NetBSD: machdep.c,v 1.10 2005/12/31 14:09:02 hannken Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.9 2005/12/24 22:45:35 perry Exp $");
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.10 2005/12/31 14:09:02 hannken Exp $");
#include "opt_explora.h"
#include "ksyms.h"
@ -153,6 +153,22 @@ set_tlb(int idx, u_int addr, u_int flags)
: : "r" (idx), "r" (lo), "r" (hi) );
}
/*
* Install a trap vector. We cannot use memcpy because the
* destination may be zero.
*/
static void
trap_copy(void *src, int dest, size_t len)
{
uint32_t *src_p = src;
uint32_t *dest_p = (void *)dest;
while (len > 0) {
*dest_p++ = *src_p++;
len -= sizeof(uint32_t);
}
}
void
bootstrap(u_int startkernel, u_int endkernel)
{
@ -240,10 +256,10 @@ bootstrap(u_int startkernel, u_int endkernel)
*/
for (i = EXC_RSVD; i <= EXC_LAST; i += 0x100)
memcpy((void *)i, &defaulttrap, (size_t)&defaultsize);
trap_copy(&defaulttrap, i, (size_t)&defaultsize);
for (i = 0; i < sizeof(trap_table)/sizeof(trap_table[0]); i++) {
memcpy((void *)trap_table[i].vector, trap_table[i].addr,
trap_copy(trap_table[i].addr, trap_table[i].vector,
(size_t)trap_table[i].size);
}