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comparison src/cpu/x86/vm/interp_masm_x86_64.cpp @ 342:37f87013dfd8

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6711316: Open source the Garbage-First garbage collector Summary: First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author ysr
date Thu, 05 Jun 2008 15:57:56 -0700
parents ba764ed4b6f2
children 6aae2f9d0294
comparison
equal deleted inserted replaced
189:0b27f3512f9e 342:37f87013dfd8
33 // interpreter specific 33 // interpreter specific
34 // 34 //
35 // Note: No need to save/restore bcp & locals (r13 & r14) pointer 35 // Note: No need to save/restore bcp & locals (r13 & r14) pointer
36 // since these are callee saved registers and no blocking/ 36 // since these are callee saved registers and no blocking/
37 // GC can happen in leaf calls. 37 // GC can happen in leaf calls.
38 // Further Note: DO NOT save/restore bcp/locals. If a caller has
39 // already saved them so that it can use esi/edi as temporaries
40 // then a save/restore here will DESTROY the copy the caller
41 // saved! There used to be a save_bcp() that only happened in
42 // the ASSERT path (no restore_bcp). Which caused bizarre failures
43 // when jvm built with ASSERTs.
38 #ifdef ASSERT 44 #ifdef ASSERT
39 save_bcp();
40 { 45 {
41 Label L; 46 Label L;
42 cmpq(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int)NULL_WORD); 47 cmpq(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int)NULL_WORD);
43 jcc(Assembler::equal, L); 48 jcc(Assembler::equal, L);
44 stop("InterpreterMacroAssembler::call_VM_leaf_base:" 49 stop("InterpreterMacroAssembler::call_VM_leaf_base:"
47 } 52 }
48 #endif 53 #endif
49 // super call 54 // super call
50 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); 55 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments);
51 // interpreter specific 56 // interpreter specific
52 #ifdef ASSERT 57 // Used to ASSERT that r13/r14 were equal to frame's bcp/locals
53 { 58 // but since they may not have been saved (and we don't want to
54 Label L; 59 // save thme here (see note above) the assert is invalid.
55 cmpq(r13, Address(rbp, frame::interpreter_frame_bcx_offset * wordSize));
56 jcc(Assembler::equal, L);
57 stop("InterpreterMacroAssembler::call_VM_leaf_base:"
58 " r13 not callee saved?");
59 bind(L);
60 }
61 {
62 Label L;
63 cmpq(r14, Address(rbp, frame::interpreter_frame_locals_offset * wordSize));
64 jcc(Assembler::equal, L);
65 stop("InterpreterMacroAssembler::call_VM_leaf_base:"
66 " r14 not callee saved?");
67 bind(L);
68 }
69 #endif
70 } 60 }
71 61
72 void InterpreterMacroAssembler::call_VM_base(Register oop_result, 62 void InterpreterMacroAssembler::call_VM_base(Register oop_result,
73 Register java_thread, 63 Register java_thread,
74 Register last_java_sp, 64 Register last_java_sp,