From 6fe3b9fdd591ea8c5590c87bb5aecd922ada6072 Mon Sep 17 00:00:00 2001
From: Claudiu Zissulescu <claziss@synopsys.com>
Date: Mon, 30 Apr 2018 15:16:24 +0200
Subject: [PATCH] [ARC] Clear the instruction cache using syscalls.
Clear the instruction cache from `beg' to `end'. This makes an inline
system call to SYS_cacheflush.
gcc/
2017-03-28 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/linux.h (CLEAR_INSN_CACHE): Define.
From-SVN: r259764
---
gcc/ChangeLog | 4 ++++
gcc/config/arc/linux.h | 14 ++++++++++++++
2 files changed, 18 insertions(+)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e2afb1f94737..4560dd8f6687 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2018-04-30 Claudiu Zissulescu <claziss@synopsys.com>
+
+ * config/arc/linux.h (CLEAR_INSN_CACHE): Define.
+
2018-04-30 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc-protos.h (prepare_extend_operands): Remove.
diff --git a/gcc/config/arc/linux.h b/gcc/config/arc/linux.h
index 4e87dfe3ac13..96d548eae341 100644
--- a/gcc/config/arc/linux.h
+++ b/gcc/config/arc/linux.h
@@ -109,3 +109,17 @@ along with GCC; see the file COPYING3. If not see
/* Build attribute: procedure call standard. */
#undef ATTRIBUTE_PCS
#define ATTRIBUTE_PCS 3
+
+/* Clear the instruction cache from `beg' to `end'. This makes an
+ inline system call to SYS_cacheflush. */
+#undef CLEAR_INSN_CACHE
+#define CLEAR_INSN_CACHE(beg, end) \
+{ \
+ register unsigned long _beg __asm ("r0") = (unsigned long) (beg); \
+ register unsigned long _end __asm ("r1") = (unsigned long) (end); \
+ register unsigned long _xtr __asm ("r2") = 0; \
+ register unsigned long _scno __asm ("r8") = 244; \
+ __asm __volatile ("trap_s 0 ; sys_cache_sync" \
+ : "=r" (_beg) \
+ : "0" (_beg), "r" (_end), "r" (_xtr), "r" (_scno)); \
+}
--
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