AArch64: Add memcmp16() for Arm64; ensure xSELF not clobbered
This patch modifies memcmp() to memcmp16(). Please note that this
implementation of memcmp16() is based on the bionic's memcmp().
However, to reflect a recent specification change, the file has been
modified to respect the new String.compareTo() behavior.
A test for memcmp16() has been added. The string_compareto test in
stub_test has been changed to invoke __memcmp16 in assembly stubs.
Add artIsAssignableFromCode to the list of native downcalls to
store and reload x18. Remove CheckSuspendFromCode, as it is unused.
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
Change-Id: Ie0b5425ecfb62906d29a5d02e84c7e07ffb34a11
diff --git a/runtime/arch/memcmp16.h b/runtime/arch/memcmp16.h
index ad58588..1144c8c 100644
--- a/runtime/arch/memcmp16.h
+++ b/runtime/arch/memcmp16.h
@@ -30,7 +30,7 @@
//
// In both cases, MemCmp16 is declared.
-#if defined(__arm__) || defined(__mips)
+#if defined(__aarch64__) || defined(__arm__) || defined(__mips)
extern "C" uint32_t __memcmp16(const uint16_t* s0, const uint16_t* s1, size_t count);
#define MemCmp16 __memcmp16