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xtensa: add xtensa_xsr macro

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xtensa_xsr does the XSR instruction for the specified special register.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov
2019-11-25 12:59:13 -08:00
parent 0b549f8133
commit dedfe2590b
1 changed files with 7 additions and 0 deletions
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7
arch/xtensa/include/asm/processor.h
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@@ -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)