Commit 6a5ccb2e authored by Jeremie Courreges-Anglas's avatar Jeremie Courreges-Anglas Committed by Tom Stellard
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[compiler-rt] Implement __clear_cache() on OpenBSD/riscv64 

(cherry picked from commit 3db95906)
parent 6aa05424

compiler-rt/lib/builtins/clear_cache.c

+8 −1
Original line number Diff line number Diff line
@@ -35,7 +35,7 @@ uintptr_t GetCurrentProcess(void); 
#include <machine/sysarch.h>

#endif



#if defined(__OpenBSD__) && (defined(__arm__) || defined(__mips__))

#if defined(__OpenBSD__) && (defined(__arm__) || defined(__mips__) || defined(__riscv))

// clang-format off

#include <sys/types.h>

#include <machine/sysarch.h>
@@ -166,6 +166,13 @@ void __clear_cache(void *start, void *end) { 
                   : "=r"(start_reg)

                   : "r"(start_reg), "r"(end_reg), "r"(flags), "r"(syscall_nr));

  assert(start_reg == 0 && "Cache flush syscall failed.");

#elif defined(__riscv) && defined(__OpenBSD__)

  struct riscv_sync_icache_args arg;



  arg.addr = (uintptr_t)start;

  arg.len = (uintptr_t)end - (uintptr_t)start;



  sysarch(RISCV_SYNC_ICACHE, &arg);

#else

#if __APPLE__

  // On Darwin, sys_icache_invalidate() provides this functionality