< prev index next >
src/cpu/aarch64/vm/templateInterpreterGenerator_aarch64.cpp
Print this page
*** 55,72 ****
--- 55,285 ----
#ifdef BUILTIN_SIM
#include "../../../../../../simulator/simulator.hpp"
#endif
+ // Size of interpreter code. Increase if too small. Interpreter will
+ // fail with a guarantee ("not enough space for interpreter generation");
+ // if too small.
+ // Run with +PrintInterpreter to get the VM to print out the size.
+ // Max size with JVMTI
+ int TemplateInterpreter::InterpreterCodeSize = 200 * 1024;
+
#define __ _masm->
//-----------------------------------------------------------------------------
extern "C" void entry(CodeBuffer*);
//-----------------------------------------------------------------------------
+ address TemplateInterpreterGenerator::generate_slow_signature_handler() {
+ address entry = __ pc();
+
+ __ andr(esp, esp, -16);
+ __ mov(c_rarg3, esp);
+ // rmethod
+ // rlocals
+ // c_rarg3: first stack arg - wordSize
+
+ // adjust sp
+ __ sub(sp, c_rarg3, 18 * wordSize);
+ __ str(lr, Address(__ pre(sp, -2 * wordSize)));
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::slow_signature_handler),
+ rmethod, rlocals, c_rarg3);
+
+ // r0: result handler
+
+ // Stack layout:
+ // rsp: return address <- sp
+ // 1 garbage
+ // 8 integer args (if static first is unused)
+ // 1 float/double identifiers
+ // 8 double args
+ // stack args <- esp
+ // garbage
+ // expression stack bottom
+ // bcp (NULL)
+ // ...
+
+ // Restore LR
+ __ ldr(lr, Address(__ post(sp, 2 * wordSize)));
+
+ // Do FP first so we can use c_rarg3 as temp
+ __ ldrw(c_rarg3, Address(sp, 9 * wordSize)); // float/double identifiers
+
+ for (int i = 0; i < Argument::n_float_register_parameters_c; i++) {
+ const FloatRegister r = as_FloatRegister(i);
+
+ Label d, done;
+
+ __ tbnz(c_rarg3, i, d);
+ __ ldrs(r, Address(sp, (10 + i) * wordSize));
+ __ b(done);
+ __ bind(d);
+ __ ldrd(r, Address(sp, (10 + i) * wordSize));
+ __ bind(done);
+ }
+
+ // c_rarg0 contains the result from the call of
+ // InterpreterRuntime::slow_signature_handler so we don't touch it
+ // here. It will be loaded with the JNIEnv* later.
+ __ ldr(c_rarg1, Address(sp, 1 * wordSize));
+ for (int i = c_rarg2->encoding(); i <= c_rarg7->encoding(); i += 2) {
+ Register rm = as_Register(i), rn = as_Register(i+1);
+ __ ldp(rm, rn, Address(sp, i * wordSize));
+ }
+
+ __ add(sp, sp, 18 * wordSize);
+ __ ret(lr);
+
+ return entry;
+ }
+
+
+ //
+ // Various method entries
+ //
+
+ address TemplateInterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) {
+ // rmethod: Method*
+ // r13: sender sp
+ // esp: args
+
+ if (!InlineIntrinsics) return NULL; // Generate a vanilla entry
+
+ // These don't need a safepoint check because they aren't virtually
+ // callable. We won't enter these intrinsics from compiled code.
+ // If in the future we added an intrinsic which was virtually callable
+ // we'd have to worry about how to safepoint so that this code is used.
+
+ // mathematical functions inlined by compiler
+ // (interpreter must provide identical implementation
+ // in order to avoid monotonicity bugs when switching
+ // from interpreter to compiler in the middle of some
+ // computation)
+ //
+ // stack:
+ // [ arg ] <-- esp
+ // [ arg ]
+ // retaddr in lr
+
+ address entry_point = NULL;
+ Register continuation = lr;
+ switch (kind) {
+ case Interpreter::java_lang_math_abs:
+ entry_point = __ pc();
+ __ ldrd(v0, Address(esp));
+ __ fabsd(v0, v0);
+ __ mov(sp, r13); // Restore caller's SP
+ break;
+ case Interpreter::java_lang_math_sqrt:
+ entry_point = __ pc();
+ __ ldrd(v0, Address(esp));
+ __ fsqrtd(v0, v0);
+ __ mov(sp, r13);
+ break;
+ case Interpreter::java_lang_math_sin :
+ case Interpreter::java_lang_math_cos :
+ case Interpreter::java_lang_math_tan :
+ case Interpreter::java_lang_math_log :
+ case Interpreter::java_lang_math_log10 :
+ case Interpreter::java_lang_math_exp :
+ entry_point = __ pc();
+ __ ldrd(v0, Address(esp));
+ __ mov(sp, r13);
+ __ mov(r19, lr);
+ continuation = r19; // The first callee-saved register
+ generate_transcendental_entry(kind, 1);
+ break;
+ case Interpreter::java_lang_math_pow :
+ entry_point = __ pc();
+ __ mov(r19, lr);
+ continuation = r19;
+ __ ldrd(v0, Address(esp, 2 * Interpreter::stackElementSize));
+ __ ldrd(v1, Address(esp));
+ __ mov(sp, r13);
+ generate_transcendental_entry(kind, 2);
+ break;
+ default:
+ ;
+ }
+ if (entry_point) {
+ __ br(continuation);
+ }
+
+ return entry_point;
+ }
+
+ // double trigonometrics and transcendentals
+ // static jdouble dsin(jdouble x);
+ // static jdouble dcos(jdouble x);
+ // static jdouble dtan(jdouble x);
+ // static jdouble dlog(jdouble x);
+ // static jdouble dlog10(jdouble x);
+ // static jdouble dexp(jdouble x);
+ // static jdouble dpow(jdouble x, jdouble y);
+
+ void TemplateInterpreterGenerator::generate_transcendental_entry(AbstractInterpreter::MethodKind kind, int fpargs) {
+ address fn;
+ switch (kind) {
+ case Interpreter::java_lang_math_sin :
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dsin);
+ break;
+ case Interpreter::java_lang_math_cos :
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dcos);
+ break;
+ case Interpreter::java_lang_math_tan :
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dtan);
+ break;
+ case Interpreter::java_lang_math_log :
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dlog);
+ break;
+ case Interpreter::java_lang_math_log10 :
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10);
+ break;
+ case Interpreter::java_lang_math_exp :
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dexp);
+ break;
+ case Interpreter::java_lang_math_pow :
+ fpargs = 2;
+ fn = CAST_FROM_FN_PTR(address, SharedRuntime::dpow);
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+ const int gpargs = 0, rtype = 3;
+ __ mov(rscratch1, fn);
+ __ blrt(rscratch1, gpargs, fpargs, rtype);
+ }
+
+ // Abstract method entry
+ // Attempt to execute abstract method. Throw exception
+ address TemplateInterpreterGenerator::generate_abstract_entry(void) {
+ // rmethod: Method*
+ // r13: sender SP
+
+ address entry_point = __ pc();
+
+ // abstract method entry
+
+ // pop return address, reset last_sp to NULL
+ __ empty_expression_stack();
+ __ restore_bcp(); // bcp must be correct for exception handler (was destroyed)
+ __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
+
+ // throw exception
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_AbstractMethodError));
+ // the call_VM checks for exception, so we should never return here.
+ __ should_not_reach_here();
+
+ return entry_point;
+ }
+
address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
address entry = __ pc();
#ifdef ASSERT
{
< prev index next >