From dedfe2590bdf1beaaf064f1f1b71098b5fddbfe1 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 25 Nov 2019 12:59:13 -0800
Subject: [PATCH] xtensa: add xtensa_xsr macro
xtensa_xsr does the XSR instruction for the specified special register.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
arch/xtensa/include/asm/processor.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 4489a27d527a8..76bc63127c66e 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)
--
2.30.2