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comparison src/cpu/x86/vm/sharedRuntime_x86_64.cpp @ 11173:6b0fd0964b87

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Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
author Doug Simon <doug.simon@oracle.com>
date Wed, 31 Jul 2013 11:00:54 +0200
parents 0b1b5356b566 e7f5651d459c
children 02f27ecb4f3a
comparison
equal deleted inserted replaced
10912:4ea54634f03e 11173:6b0fd0964b87
1441 assert(!body_arg.first()->is_Register() || body_arg.first()->as_Register() != tmp_reg, 1441 assert(!body_arg.first()->is_Register() || body_arg.first()->as_Register() != tmp_reg,
1442 "possible collision"); 1442 "possible collision");
1443 assert(!length_arg.first()->is_Register() || length_arg.first()->as_Register() != tmp_reg, 1443 assert(!length_arg.first()->is_Register() || length_arg.first()->as_Register() != tmp_reg,
1444 "possible collision"); 1444 "possible collision");
1445 1445
1446 __ block_comment("unpack_array_argument {");
1447
1446 // Pass the length, ptr pair 1448 // Pass the length, ptr pair
1447 Label is_null, done; 1449 Label is_null, done;
1448 VMRegPair tmp; 1450 VMRegPair tmp;
1449 tmp.set_ptr(tmp_reg->as_VMReg()); 1451 tmp.set_ptr(tmp_reg->as_VMReg());
1450 if (reg.first()->is_stack()) { 1452 if (reg.first()->is_stack()) {
1465 // Pass zeros 1467 // Pass zeros
1466 __ xorptr(tmp_reg, tmp_reg); 1468 __ xorptr(tmp_reg, tmp_reg);
1467 move_ptr(masm, tmp, body_arg); 1469 move_ptr(masm, tmp, body_arg);
1468 move32_64(masm, tmp, length_arg); 1470 move32_64(masm, tmp, length_arg);
1469 __ bind(done); 1471 __ bind(done);
1472
1473 __ block_comment("} unpack_array_argument");
1470 } 1474 }
1471 1475
1472 1476
1473 // Different signatures may require very different orders for the move 1477 // Different signatures may require very different orders for the move
1474 // to avoid clobbering other arguments. There's no simple way to 1478 // to avoid clobbering other arguments. There's no simple way to
2206 default: 2210 default:
2207 move32_64(masm, in_regs[i], out_regs[c_arg]); 2211 move32_64(masm, in_regs[i], out_regs[c_arg]);
2208 } 2212 }
2209 } 2213 }
2210 2214
2211 // point c_arg at the first arg that is already loaded in case we 2215 int c_arg;
2212 // need to spill before we call out
2213 int c_arg = total_c_args - total_in_args;
2214 2216
2215 // Pre-load a static method's oop into r14. Used both by locking code and 2217 // Pre-load a static method's oop into r14. Used both by locking code and
2216 // the normal JNI call code. 2218 // the normal JNI call code.
2217 if (method->is_static() && !is_critical_native) { 2219 if (!is_critical_native) {
2218 2220 // point c_arg at the first arg that is already loaded in case we
2219 // load oop into a register 2221 // need to spill before we call out
2220 __ movoop(oop_handle_reg, JNIHandles::make_local(method->method_holder()->java_mirror())); 2222 c_arg = total_c_args - total_in_args;
2221 2223
2222 // Now handlize the static class mirror it's known not-null. 2224 if (method->is_static()) {
2223 __ movptr(Address(rsp, klass_offset), oop_handle_reg); 2225
2224 map->set_oop(VMRegImpl::stack2reg(klass_slot_offset)); 2226 // load oop into a register
2225 2227 __ movoop(oop_handle_reg, JNIHandles::make_local(method->method_holder()->java_mirror()));
2226 // Now get the handle 2228
2227 __ lea(oop_handle_reg, Address(rsp, klass_offset)); 2229 // Now handlize the static class mirror it's known not-null.
2228 // store the klass handle as second argument 2230 __ movptr(Address(rsp, klass_offset), oop_handle_reg);
2229 __ movptr(c_rarg1, oop_handle_reg); 2231 map->set_oop(VMRegImpl::stack2reg(klass_slot_offset));
2230 // and protect the arg if we must spill 2232
2231 c_arg--; 2233 // Now get the handle
2234 __ lea(oop_handle_reg, Address(rsp, klass_offset));
2235 // store the klass handle as second argument
2236 __ movptr(c_rarg1, oop_handle_reg);
2237 // and protect the arg if we must spill
2238 c_arg--;
2239 }
2240 } else {
2241 // For JNI critical methods we need to save all registers in save_args.
2242 c_arg = 0;
2232 } 2243 }
2233 2244
2234 // Change state to native (we save the return address in the thread, since it might not 2245 // Change state to native (we save the return address in the thread, since it might not
2235 // be pushed on the stack when we do a a stack traversal). It is enough that the pc() 2246 // be pushed on the stack when we do a a stack traversal). It is enough that the pc()
2236 // points into the right code segment. It does not have to be the correct return pc. 2247 // points into the right code segment. It does not have to be the correct return pc.