[PATCH 1/4] util/cacheflush: fix illegal instruction on windows-arm64

[Pierrick Bouvier <pierrick.bouvier@linaro.org>]

mrs instruction fails as an illegal instruction.
For now, no cache information is retrieved for this platform.
It could be specialized later, using Windows API.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
---
 util/cacheflush.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/util/cacheflush.c b/util/cacheflush.c
index 2c2c73e085..149f103d32 100644
--- a/util/cacheflush.c
+++ b/util/cacheflush.c
@@ -121,8 +121,9 @@ static void sys_cache_info(int *isize, int *dsize)
 static bool have_coherent_icache;
 #endif
 
-#if defined(__aarch64__) && !defined(CONFIG_DARWIN)
+#if defined(__aarch64__) && !defined(CONFIG_DARWIN) && !defined(CONFIG_WIN32)
 /* Apple does not expose CTR_EL0, so we must use system interfaces. */
+/* Does not work on windows-arm64, illegal instruction using mrs */
 static uint64_t save_ctr_el0;
 static void arch_cache_info(int *isize, int *dsize)
 {
@@ -225,7 +226,7 @@ static void __attribute__((constructor)) init_cache_info(void)
 
 /* Caches are coherent and do not require flushing; symbol inline. */
 
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) && !defined(CONFIG_WIN32)
 
 #ifdef CONFIG_DARWIN
 /* Apple does not expose CTR_EL0, so we must use system interfaces. */
-- 
2.30.2