From: <zengshuai@sogou•com>
To: "ppc" <linuxppc-embedded@ozlabs•org>
Subject: bus error
Date: Thu, 1 Dec 2005 16:37:43 +0800 (CST) [thread overview]
Message-ID: <13090422.1133426263198.JavaMail.postfix@mx3.mail.sohu.com> (raw)
//test.c
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
int main(void)
{
static volatile char *reg_mem;
static int axs_mem_fd = -1;
axs_mem_fd = open("/dev/mem", O_RDWR|O_SYNC);
if (axs_mem_fd < 0) {
perror("AXS: can't open /dev/mem");
return NULL;
}
/* memory map */
reg_mem =(volatile char*)mmap(
(caddr_t)reg_mem,
0x4,
PROT_READ|PROT_WRITE,
MAP_SHARED,
axs_mem_fd,
0x04600000
);
if(reg_mem[0]==0x10) printf("OK");
else printf("sorry");
}
host:
ppc_6xx-gcc -o test test.c
target:
./test
Bus error
need help,thanks
------------------------------
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reply other threads:[~2005-12-01 8:50 UTC|newest]
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