Today I write a test.c for test ipc/msg. frist I make it use GCC, it work fine in FC4.
Then I make it use nios2-linux-uclibc-gcc, and exec it. But msgQ not inplemented
following is the return information in shell.
# msgsend
msgget: Calling msgget(0x4d2,01666)
msgget: Function not implemented#
So I check the nios2 kernel configure, I slect "general-->POSIX Message Queues" setting and rebuild the kernel.
follow is rebuilding kernel information:
[Alex@localhost linux-2.6.x]$ make ARCH=nios2nommu CROSS_COMPILE=nios2-linux-uclibc- zImage
no emulation specific options.
CHK include/linux/version.h
SPLIT include/linux/autoconf.h -> include/config/*
CHK include/nios2_system.h
perl -I/home/Alex/linux-2.6.x/arch/nios2nommu/scripts /home/Alex/linux-2.6.x/arch/nios2nommu/scripts/gen_nios2_system.
h.pl cpu sdram ext_flash < ../nios2_ptf/CRM3500N_cpu_v2.ptf > include/nios2_system.h.tmp; if [ -r include/nios2_system.h ] && cmp -s include/nios2_system.h include/nios2_system.h.tmp; then rm -f include/nios2_system.h.tmp; else echo ' UPD include/nios2_system.h'; mv -f include/nios2_system.h.tmp include/nios2_system.h; fi
make[1]: “arch/nios2nommu/kernel/asm-offsets.s”是最新的。
CHK include/asm-nios2nommu/asm-offsets.h
CHK include/linux/compile.h
CHK usr/initramfs_list
CC ipc/mqueue.o
CC ipc/msgutil.o
LD ipc/built-in.o
GEN .version
CHK include/linux/compile.h
UPD include/linux/compile.h
CC init/version.o
LD init/built-in.o
LD vmlinux
SYSMAP System.map
OBJCOPY arch/nios2nommu/boot/compressed/vmlinux.bin
GZIP arch/nios2nommu/boot/compressed/vmlinux.bin.gz
LD arch/nios2nommu/boot/compressed/piggy.o
LD arch/nios2nommu/boot/compressed/vmlinux
OBJCOPY arch/nios2nommu/boot/zImage
Kernel: arch/nios2nommu/boot/zImage is ready
[Alex@localhost linux-2.6.x]$
I find CC ipc/mqueue.o , so I think maybe ipcs will suppourt.
CC ipc/msgutil.o
LD ipc/built-in.o
http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif I exec the zImage, but ipcs cmd still lost.
And exec the test bin still failed.
The following is the test.c for test ipc/mqueue
# include <sys/types.h># include <sys/ipc.h># include <sys/msg.h># include <stdio.h># include <string.h># define MSGSZ 128
/*
* Declare the message structure.
*/
typedef struct {
long mtype;
char mtext[MSGSZ];
} message_buf;
main(){
int msqid;
int msgflg = IPC_CREAT | 0666;
key_t key;
message_buf sbuf;
size_t buf_length;
/*
* Get the message queue id for the
* "name" 1234, which was created by
* the server.
*/
key = 1234;
(void) fprintf(stderr,
"\nmsgget: Calling msgget(%#lx,\%#o)\n",
key, msgflg);
if ((msqid = msgget(key, msgflg )) < 0) {
perror("msgget");
exit(1);
}
else
(void) fprintf(stderr,
"msgget: msgget succeeded: msqid = %d\n",
msqid);
/*
* We'll send message type 1
*/
sbuf.mtype = 1;
(void) fprintf(stderr,
"msgget: msgget succeeded: msqid = %d\n",
msqid);
(void) strcpy(sbuf.mtext, "Did you get this?");
(void) fprintf(stderr,
"msgget: msgget succeeded: msqid = %d\n",
msqid);
buf_length = strlen(sbuf.mtext) ;
/*
* Send a message.
*/
if (msgsnd(msqid, &sbuf, buf_length, IPC_NOWAIT) < 0) {
printf ("%d, %d, %s, %d\n", msqid, sbuf.mtype, sbuf.mtext, buf_length);
perror("msgsnd");
exit(1);
}
else
printf("Message: \"%s\" Sent\n", sbuf.mtext);
exit(0);
}
Pleaes let us solver the question togeter.
http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif
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