The bionic libc test test_setjmp fails

[chenzhu33]

Description
The test_setjmp tries to test that integer and float registers are restored properly. However it fails when test float registers.

setjmp returns not zero
register xx's value is changed :
if (xx != FLOAT_VALUE1) {
fprintf(stderr, "setjmp() is broken for floating point registers !\n");
exit(1);
}

Reproduce steps
cd ~/ucore_plus/ucore
make ARCH=arm BOARD=goldfishv7 defconfig
make sfsimg
make kernel
./uCore_test -s bionic -w 15 -t 45 -f src/user-ucore/testspecs/test_setjmp.testspec

Current result
kernel_execve: pid = 4, name = "/bionic-test/test_setjmp".
setjmp() is broken for floating point registers !

Expected Result
the sentence: "setjmp() is broken for floating point registers !" wouldn't appear

[chyh1990]

you should aware that the task switching code in the kernel does NOT store/restore floating point regs, so you may need to add this support in order to pass the test.

[chenzhu33]

所以我应该为ucore添加浮点运算才能通过这个测试吗？
这个该怎么添加呢，大概的思路是怎么样的?

中秋国庆快乐~

---

FR 陈朱伟
Chen Zhu Wei
THU -- CST
Tsinghua University Beijing 100084
P.R.CHINA

------------------ 原始邮件 ------------------
发件人: "Chen Yuheng"notifications@github.com;
发送时间: 2012年10月1日(星期一) 中午1:05
收件人: "chyyuu/ucore_plus"ucore_plus@noreply.github.com;
抄送: "Czw"346402360@qq.com;
主题: Re: [ucore_plus] The bionic libc test test_setjmp fails (#17)

you should aware that the task switching code in the kernel does NOT store/restore floating point regs, so you may need to add this support in order to pass the test.

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           Reply to this email directly or view it on GitHub.

[chyh1990]

任务切换时恢复和保存相关寄存器，可参考手册和linux内核代码