From: Max Filippov <jcmvbkbc@gmail.com>
To: linux-xtensa@linux-xtensa.org
Cc: Chris Zankel <chris@zankel.net>,
linux-kernel@vger.kernel.org, Max Filippov <jcmvbkbc@gmail.com>
Subject: [PATCH v2 07/10] xtensa: add xtensa_xsr macro
Date: Thu, 21 Apr 2022 03:10:30 -0700 [thread overview]
Message-ID: <20220421101033.216394-8-jcmvbkbc@gmail.com> (raw)
In-Reply-To: <20220421101033.216394-1-jcmvbkbc@gmail.com>
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 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)
--
2.30.2
next prev parent reply other threads:[~2022-04-21 10:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-21 10:10 [PATCH v2 00/10] xtensa: support coprocessors on SMP Max Filippov
2022-04-21 10:10 ` [PATCH v2 01/10] xtensa: clean up function declarations in traps.c Max Filippov
2022-04-21 10:10 ` [PATCH v2 02/10] xtensa: clean up exception handler prototypes Max Filippov
2022-04-21 10:10 ` [PATCH v2 03/10] xtensa: clean up declarations in coprocessor.h Max Filippov
2022-04-21 10:10 ` [PATCH v2 04/10] xtensa: clean up excsave1 initialization Max Filippov
2022-04-21 10:10 ` [PATCH v2 05/10] xtensa: use callx0 opcode in fast_coprocessor Max Filippov
2022-04-21 10:10 ` [PATCH v2 06/10] xtensa: handle coprocessor exceptions in kernel mode Max Filippov
2022-04-21 10:10 ` Max Filippov [this message]
2022-04-21 10:10 ` [PATCH v2 08/10] xtensa: merge SAVE_CP_REGS_TAB and LOAD_CP_REGS_TAB Max Filippov
2022-04-21 10:10 ` [PATCH v2 09/10] xtensa: get rid of stack frame in coprocessor_flush Max Filippov
2022-04-21 10:10 ` [PATCH v2 10/10] xtensa: support coprocessors on SMP Max Filippov
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