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| author |   Max Filippov <jcmvbkbc@gmail.com> | 2019-11-25 12:59:13 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2022-05-01 19:51:23 -0700 |
| commit | dedfe2590bdf1beaaf064f1f1b71098b5fddbfe1 (patch) | |
| tree | d689f083efe63f78745e6ca21cf54b53a9a27310 /arch/xtensa/include/asm/processor.h | |
| parent | xtensa: handle coprocessor exceptions in kernel mode (diff) | |
| download | linux-dev-dedfe2590bdf1beaaf064f1f1b71098b5fddbfe1.tar.xz linux-dev-dedfe2590bdf1beaaf064f1f1b71098b5fddbfe1.zip | |
xtensa: add xtensa_xsr macro
xtensa_xsr does the XSR instruction for the specified special register.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/include/asm/processor.h')
| -rw-r--r-- | arch/xtensa/include/asm/processor.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h index 4489a27d527a..76bc63127c66 100644 --- a/arch/xtensa/include/asm/processor.h +++ b/arch/xtensa/include/asm/processor.h @@ -246,6 +246,13 @@ extern unsigned long __get_wchan(struct task_struct *p); v; \ }) +#define xtensa_xsr(x, sr) \ + ({ \ + unsigned int __v__ = (unsigned int)(x); \ + __asm__ __volatile__ ("xsr %0, " __stringify(sr) : "+a"(__v__)); \ + __v__; \ + }) + #if XCHAL_HAVE_EXTERN_REGS static inline void set_er(unsigned long value, unsigned long addr) |