Add QEMU rv64 vector support & interrupt handling/process switch improvement · Pull Request !586 · RT-Thread/rt-thread

## 拉取/合并请求描述：

[
### Feature

This patch is compatible to **riscv-v-spec-1.0**

* improve kernel context switch routine
* improve interrupt/exception handling routine
* add V context saving/restoring support
* all threads default to close V context and open it only when thread execute V extension instructions or read V CSRs

### TEST

tested on QEMU 7.1 (you will need a toolchain support V extension to compile kernel)
A unit test is also added under `application/test/test_vector` to test following features

* V features
* Context saving/restoring

Also, a unit test covering libc, pingpong, timer, ipc is been tested:

```text
[I/utest] [testcase name]:utest.user_ipc.user_ipc_tc; [run timeout]:500
[I/utest] [testcase name]:utest.timer.timer_tc; [run timeout]:60
[I/utest] [testcase name]:utest.pingpong_test.pingpong_timeout_tc; [run timeout]:500
[I/utest] [testcase name]:utest.cpp_test.cpp_tc; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.basename; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.getcwd; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.dirname; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.env; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.crypt; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.udiv; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.random; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.misc.setjmp; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.charset.iconv_open; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.charset.clocale_mbfuncs; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.charset.mbc; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string_memcpy; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string_memmem; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string_memset; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string_strchr; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string_strcspn; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.string_strstr; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.strtod; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.strtod_long; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.strtod_simple; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.strtof; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.strtol; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.strtold; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.search_hsearch; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.search_insque; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.search_lsearch; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.search_tsearch; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.wcsstr; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.wcstol; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.string.qsort; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.acos; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.acosf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.acosh; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.acoshf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.asin; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.asinf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.asinh; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.asinhf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.atan; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.atan2; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.atan2f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.atanf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.atanh; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.atanhf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.cbrt; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.cbrtf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.ceilf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.copysign; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.copysignf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.cos; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.cosf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.cosh; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.coshf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.drem; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.dremf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.erf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.erfc; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.erfcf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.erff; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.exp; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.exp10; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.exp10f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.exp2; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.exp2f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.expf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.expm1; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.expm1f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fabs; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fabsf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fdim; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fdimf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fenv; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.floor; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.floorf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fma; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fmaf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fmax; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fmaxf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fmin; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fminf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fmod; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.fmodf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.frexp; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.frexpf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.hypot; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.hypotf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.ilogb; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.ilogbf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.isless; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.j0; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.j0f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.j1; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.j1f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.jn; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.jnf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.ldexp; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.ldexpf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lgamma; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lgamma_r; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lgammaf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lgammaf_r; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lgammal_r; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.llround; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.llroundf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log10; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log10f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log1p; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log1pf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log2; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.log2f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.logb; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.logbf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.logf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lround; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.lroundf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.modf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.modff; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.nearbyint; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.nearbyintf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.nextafter; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.nextafterf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.nexttoward; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.nexttowardf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.pow; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.pow10; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.pow10f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.powf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.remainder; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.remainderf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.remquo; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.remquof; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.rint; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.rintf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.round; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.roundf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.scalb; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.scalbf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.scalbln; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.scalblnf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.scalbn; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.scalbnf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sin; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sincos; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sincosf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sinf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sinh; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sinhf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sqrt; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.sqrtf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.tan; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.tanf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.tanh; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.tanhf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.tgamma; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.tgammaf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.trunc; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.truncf; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.y0; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.y0f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.y1; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.y1f; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.yn; [run timeout]:5
[I/utest] [testcase name]:utest.libc_test.math.ynf; [run timeout]:5
```

]

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### 当前拉取/合并请求的状态：

必须选择一项:

- [ ] 本拉取/合并请求是一个草稿版本
- [x] 本拉取/合并请求是一个成熟版本

### 代码质量：

我在这个拉取/合并请求中已经考虑了:

- [x] 已经仔细查看过代码改动的对比
- [x] 代码风格正确，包括缩进空格，命名及其他风格
- [x] 没有垃圾代码，代码尽量精简，不包含`#if 0`代码，不包含已经被注释了的代码
- [x] 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或
- [x] 对难懂代码均提供对应的注释
- [x] 本拉取/合并请求代码是高质量的
- [x] 本拉取/合并符合[RT-Thread代码规范](../documentation/contribution_guide/coding_style_cn.md)

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