Mercurial > hg > truffle
comparison src/cpu/x86/vm/x86_64.ad @ 1137:97125851f396
6829187: compiler optimizations required for JSR 292
Summary: C2 implementation for invokedynamic support.
Reviewed-by: kvn, never
author | twisti |
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date | Tue, 05 Jan 2010 13:05:58 +0100 |
parents | 148e5441d916 |
children | 2883969d09e7 |
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1136:4b84186a8248 | 1137:97125851f396 |
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549 #define RELOC_IMM64 Assembler::imm_operand | 549 #define RELOC_IMM64 Assembler::imm_operand |
550 #define RELOC_DISP32 Assembler::disp32_operand | 550 #define RELOC_DISP32 Assembler::disp32_operand |
551 | 551 |
552 #define __ _masm. | 552 #define __ _masm. |
553 | 553 |
554 static int preserve_SP_size() { | |
555 return LP64_ONLY(1 +) 2; // [rex,] op, rm(reg/reg) | |
556 } | |
557 | |
554 // !!!!! Special hack to get all types of calls to specify the byte offset | 558 // !!!!! Special hack to get all types of calls to specify the byte offset |
555 // from the start of the call to the point where the return address | 559 // from the start of the call to the point where the return address |
556 // will point. | 560 // will point. |
557 int MachCallStaticJavaNode::ret_addr_offset() | 561 int MachCallStaticJavaNode::ret_addr_offset() |
558 { | 562 { |
559 return 5; // 5 bytes from start of call to where return address points | 563 int offset = 5; // 5 bytes from start of call to where return address points |
564 if (_method_handle_invoke) | |
565 offset += preserve_SP_size(); | |
566 return offset; | |
560 } | 567 } |
561 | 568 |
562 int MachCallDynamicJavaNode::ret_addr_offset() | 569 int MachCallDynamicJavaNode::ret_addr_offset() |
563 { | 570 { |
564 return 15; // 15 bytes from start of call to where return address points | 571 return 15; // 15 bytes from start of call to where return address points |
581 | 588 |
582 // The address of the call instruction needs to be 4-byte aligned to | 589 // The address of the call instruction needs to be 4-byte aligned to |
583 // ensure that it does not span a cache line so that it can be patched. | 590 // ensure that it does not span a cache line so that it can be patched. |
584 int CallStaticJavaDirectNode::compute_padding(int current_offset) const | 591 int CallStaticJavaDirectNode::compute_padding(int current_offset) const |
585 { | 592 { |
593 current_offset += 1; // skip call opcode byte | |
594 return round_to(current_offset, alignment_required()) - current_offset; | |
595 } | |
596 | |
597 // The address of the call instruction needs to be 4-byte aligned to | |
598 // ensure that it does not span a cache line so that it can be patched. | |
599 int CallStaticJavaHandleNode::compute_padding(int current_offset) const | |
600 { | |
601 current_offset += preserve_SP_size(); // skip mov rbp, rsp | |
586 current_offset += 1; // skip call opcode byte | 602 current_offset += 1; // skip call opcode byte |
587 return round_to(current_offset, alignment_required()) - current_offset; | 603 return round_to(current_offset, alignment_required()) - current_offset; |
588 } | 604 } |
589 | 605 |
590 // The address of the call instruction needs to be 4-byte aligned to | 606 // The address of the call instruction needs to be 4-byte aligned to |
2111 // Register for MODL projection of divmodL | 2127 // Register for MODL projection of divmodL |
2112 RegMask Matcher::modL_proj_mask() { | 2128 RegMask Matcher::modL_proj_mask() { |
2113 return LONG_RDX_REG_mask; | 2129 return LONG_RDX_REG_mask; |
2114 } | 2130 } |
2115 | 2131 |
2132 const RegMask Matcher::method_handle_invoke_SP_save_mask() { | |
2133 return PTR_RBP_REG_mask; | |
2134 } | |
2135 | |
2116 static Address build_address(int b, int i, int s, int d) { | 2136 static Address build_address(int b, int i, int s, int d) { |
2117 Register index = as_Register(i); | 2137 Register index = as_Register(i); |
2118 Address::ScaleFactor scale = (Address::ScaleFactor)s; | 2138 Address::ScaleFactor scale = (Address::ScaleFactor)s; |
2119 if (index == rsp) { | 2139 if (index == rsp) { |
2120 index = noreg; | 2140 index = noreg; |
2604 // CALL directly to the runtime | 2624 // CALL directly to the runtime |
2605 emit_d32_reloc(cbuf, | 2625 emit_d32_reloc(cbuf, |
2606 (int) ($meth$$method - ((intptr_t) cbuf.code_end()) - 4), | 2626 (int) ($meth$$method - ((intptr_t) cbuf.code_end()) - 4), |
2607 runtime_call_Relocation::spec(), | 2627 runtime_call_Relocation::spec(), |
2608 RELOC_DISP32); | 2628 RELOC_DISP32); |
2629 %} | |
2630 | |
2631 enc_class preserve_SP %{ | |
2632 debug_only(int off0 = cbuf.code_size()); | |
2633 MacroAssembler _masm(&cbuf); | |
2634 // RBP is preserved across all calls, even compiled calls. | |
2635 // Use it to preserve RSP in places where the callee might change the SP. | |
2636 __ movptr(rbp, rsp); | |
2637 debug_only(int off1 = cbuf.code_size()); | |
2638 assert(off1 - off0 == preserve_SP_size(), "correct size prediction"); | |
2639 %} | |
2640 | |
2641 enc_class restore_SP %{ | |
2642 MacroAssembler _masm(&cbuf); | |
2643 __ movptr(rsp, rbp); | |
2609 %} | 2644 %} |
2610 | 2645 |
2611 enc_class Java_Static_Call(method meth) | 2646 enc_class Java_Static_Call(method meth) |
2612 %{ | 2647 %{ |
2613 // JAVA STATIC CALL | 2648 // JAVA STATIC CALL |
12524 // ============================================================================ | 12559 // ============================================================================ |
12525 // Procedure Call/Return Instructions | 12560 // Procedure Call/Return Instructions |
12526 // Call Java Static Instruction | 12561 // Call Java Static Instruction |
12527 // Note: If this code changes, the corresponding ret_addr_offset() and | 12562 // Note: If this code changes, the corresponding ret_addr_offset() and |
12528 // compute_padding() functions will have to be adjusted. | 12563 // compute_padding() functions will have to be adjusted. |
12529 instruct CallStaticJavaDirect(method meth) | 12564 instruct CallStaticJavaDirect(method meth) %{ |
12530 %{ | |
12531 match(CallStaticJava); | 12565 match(CallStaticJava); |
12566 predicate(!((CallStaticJavaNode*) n)->is_method_handle_invoke()); | |
12532 effect(USE meth); | 12567 effect(USE meth); |
12533 | 12568 |
12534 ins_cost(300); | 12569 ins_cost(300); |
12535 format %{ "call,static " %} | 12570 format %{ "call,static " %} |
12536 opcode(0xE8); /* E8 cd */ | 12571 opcode(0xE8); /* E8 cd */ |
12537 ins_encode(Java_Static_Call(meth), call_epilog); | 12572 ins_encode(Java_Static_Call(meth), call_epilog); |
12573 ins_pipe(pipe_slow); | |
12574 ins_pc_relative(1); | |
12575 ins_alignment(4); | |
12576 %} | |
12577 | |
12578 // Call Java Static Instruction (method handle version) | |
12579 // Note: If this code changes, the corresponding ret_addr_offset() and | |
12580 // compute_padding() functions will have to be adjusted. | |
12581 instruct CallStaticJavaHandle(method meth, rbp_RegP rbp) %{ | |
12582 match(CallStaticJava); | |
12583 predicate(((CallStaticJavaNode*) n)->is_method_handle_invoke()); | |
12584 effect(USE meth); | |
12585 // RBP is saved by all callees (for interpreter stack correction). | |
12586 // We use it here for a similar purpose, in {preserve,restore}_SP. | |
12587 | |
12588 ins_cost(300); | |
12589 format %{ "call,static/MethodHandle " %} | |
12590 opcode(0xE8); /* E8 cd */ | |
12591 ins_encode(preserve_SP, | |
12592 Java_Static_Call(meth), | |
12593 restore_SP, | |
12594 call_epilog); | |
12538 ins_pipe(pipe_slow); | 12595 ins_pipe(pipe_slow); |
12539 ins_pc_relative(1); | 12596 ins_pc_relative(1); |
12540 ins_alignment(4); | 12597 ins_alignment(4); |
12541 %} | 12598 %} |
12542 | 12599 |