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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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#ifndef CPU_AARCH64_VM_GLOBALDEFINITIONS_AARCH64_HPP
#define CPU_AARCH64_VM_GLOBALDEFINITIONS_AARCH64_HPP

const int StackAlignmentInBytes  = 16;

// Indicates whether the C calling conventions require that
// 32-bit integer argument values are properly extended to 64 bits.
// If set, SharedRuntime::c_calling_convention() must adapt
// signatures accordingly.
const bool CCallingConventionRequiresIntsAsLongs = true;

#define SUPPORTS_NATIVE_CX8

// The maximum B/BL offset range on AArch64 is 128MB.
#undef CODE_CACHE_DEFAULT_LIMIT
#define CODE_CACHE_DEFAULT_LIMIT (128*M)

// According to the ARMv8 ARM, "Concurrent modification and execution
// of instructions can lead to the resulting instruction performing
// any behavior that can be achieved by executing any sequence of
// instructions that can be executed from the same Exception level,
// except where the instruction before modification and the
// instruction after modification is a B, BL, NOP, BKPT, SVC, HVC, or
// SMC instruction."
//
// This makes the games we play when patching difficult, so when we
// come across an access that needs patching we deoptimize.  There are
// ways we can avoid this, but these would slow down C1-compiled code
// in the defauilt case.  We could revisit this decision if we get any
// evidence that it's worth doing.
#define DEOPTIMIZE_WHEN_PATCHING

#endif // CPU_AARCH64_VM_GLOBALDEFINITIONS_AARCH64_HPP