From 6fe3b9fdd591ea8c5590c87bb5aecd922ada6072 Mon Sep 17 00:00:00 2001 From: Claudiu Zissulescu 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 * 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 e2afb1f9473..4560dd8f668 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2018-04-30 Claudiu Zissulescu + + * config/arc/linux.h (CLEAR_INSN_CACHE): Define. + 2018-04-30 Claudiu Zissulescu * config/arc/arc-protos.h (prepare_extend_operands): Remove. diff --git a/gcc/config/arc/linux.h b/gcc/config/arc/linux.h index 4e87dfe3ac1..96d548eae34 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)); \ +} -- 2.30.2