Mercurial > hg > graal-jvmci-8
comparison src/cpu/x86/vm/sharedRuntime_x86_64.cpp @ 22458:c2c971a9776f
Remove unused frame_extension_argument from i2c adapters
| author | Tom Rodriguez <tom.rodriguez@oracle.com> |
|---|---|
| date | Mon, 24 Aug 2015 10:21:51 -0700 |
| parents | c28cb37b2e1d |
| children | f27c163d7dc2 |
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| 22457:c2d49f9fbceb | 22458:c2c971a9776f |
|---|---|
| 670 | 670 |
| 671 void SharedRuntime::gen_i2c_adapter(MacroAssembler *masm, | 671 void SharedRuntime::gen_i2c_adapter(MacroAssembler *masm, |
| 672 int total_args_passed, | 672 int total_args_passed, |
| 673 int comp_args_on_stack, | 673 int comp_args_on_stack, |
| 674 const BasicType *sig_bt, | 674 const BasicType *sig_bt, |
| 675 const VMRegPair *regs, | 675 const VMRegPair *regs) { |
| 676 int frame_extension_argument) { | |
| 677 | 676 |
| 678 // Note: r13 contains the senderSP on entry. We must preserve it since | 677 // Note: r13 contains the senderSP on entry. We must preserve it since |
| 679 // we may do a i2c -> c2i transition if we lose a race where compiled | 678 // we may do a i2c -> c2i transition if we lose a race where compiled |
| 680 // code goes non-entrant while we get args ready. | 679 // code goes non-entrant while we get args ready. |
| 681 // In addition we use r13 to locate all the interpreter args as | 680 // In addition we use r13 to locate all the interpreter args as |
| 728 __ block_comment(msg); | 727 __ block_comment(msg); |
| 729 __ stop(msg); | 728 __ stop(msg); |
| 730 __ bind(L_ok); | 729 __ bind(L_ok); |
| 731 __ block_comment("} verify_i2ce "); | 730 __ block_comment("} verify_i2ce "); |
| 732 } | 731 } |
| 733 | |
| 734 #if INCLUDE_JVMCI | |
| 735 if (frame_extension_argument != -1) { | |
| 736 // The frame_extension_argument is an int that describes the | |
| 737 // expected amount of argument space in the caller frame. If that | |
| 738 // is greater than total_args_passed then enlarge the caller frame | |
| 739 // by that amount to ensure deopt works correctly. | |
| 740 assert(frame_extension_argument < total_args_passed, "out of range"); | |
| 741 assert(sig_bt[frame_extension_argument] == T_INT, "wrong signature"); | |
| 742 | |
| 743 Label done; | |
| 744 int i = frame_extension_argument; | |
| 745 int ld_off = (total_args_passed - i)*Interpreter::stackElementSize; | |
| 746 // Check if anything needs to be done. Too much space is ok. | |
| 747 __ movl(r13, Address(rsp, ld_off)); | |
| 748 __ cmpl(r13, total_args_passed); | |
| 749 __ jcc(Assembler::lessEqual, done); | |
| 750 // Save the old rsp for the copy code | |
| 751 __ movptr(r11, rsp); | |
| 752 // Enlarge the frame | |
| 753 __ subl(r13, total_args_passed); | |
| 754 __ shlq(r13, 3); | |
| 755 __ subptr(rsp, r13); | |
| 756 | |
| 757 // Now copy the arguments in reverse order so they don't get | |
| 758 // overwritten during the copy. | |
| 759 for (int i = total_args_passed - 1; i >= 0; i--) { | |
| 760 int ld_off = (total_args_passed - i) * Interpreter::stackElementSize; | |
| 761 __ movptr(r13, Address(r11, ld_off)); | |
| 762 __ movptr(Address(rsp, ld_off), r13); | |
| 763 } | |
| 764 __ bind(done); | |
| 765 } | |
| 766 #else | |
| 767 assert(frame_extension_argument == -1, "unsupported"); | |
| 768 #endif | |
| 769 | 732 |
| 770 // Must preserve original SP for loading incoming arguments because | 733 // Must preserve original SP for loading incoming arguments because |
| 771 // we need to align the outgoing SP for compiled code. | 734 // we need to align the outgoing SP for compiled code. |
| 772 __ movptr(r11, rsp); | 735 __ movptr(r11, rsp); |
| 773 | 736 |