Mercurial > hg > truffle
diff src/cpu/x86/vm/assembler_x86.cpp @ 3464:be4ca325525a
Merge.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
---|---|
date | Wed, 27 Jul 2011 17:32:44 -0700 |
parents | 0654ee04b214 a3081a3a2b54 |
children | 04b9a2566eec |
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--- a/src/cpu/x86/vm/assembler_x86.cpp Wed Jul 27 17:24:11 2011 -0700 +++ b/src/cpu/x86/vm/assembler_x86.cpp Wed Jul 27 17:32:44 2011 -0700 @@ -3804,6 +3804,14 @@ emit_arith(0x03, 0xC0, dst, src); } +void Assembler::andq(Address dst, int32_t imm32) { + InstructionMark im(this); + prefixq(dst); + emit_byte(0x81); + emit_operand(rsp, dst, 4); + emit_long(imm32); +} + void Assembler::andq(Register dst, int32_t imm32) { (void) prefixq_and_encode(dst->encoding()); emit_arith(0x81, 0xE0, dst, imm32); @@ -5090,7 +5098,7 @@ } else { ttyLocker ttyl; ::tty->print_cr("=============== DEBUG MESSAGE: %s ================\n", msg); - assert(false, "DEBUG MESSAGE"); + assert(false, err_msg("DEBUG MESSAGE: %s", msg)); } ThreadStateTransition::transition(thread, _thread_in_vm, saved_state); } @@ -5653,6 +5661,7 @@ ttyLocker ttyl; ::tty->print_cr("=============== DEBUG MESSAGE: %s ================\n", msg); + assert(false, err_msg("DEBUG MESSAGE: %s", msg)); } } @@ -5890,6 +5899,53 @@ call_VM(oop_result, last_java_sp, entry_point, 3, check_exceptions); } +void MacroAssembler::super_call_VM(Register oop_result, + Register last_java_sp, + address entry_point, + int number_of_arguments, + bool check_exceptions) { + Register thread = LP64_ONLY(r15_thread) NOT_LP64(noreg); + MacroAssembler::call_VM_base(oop_result, thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); +} + +void MacroAssembler::super_call_VM(Register oop_result, + Register last_java_sp, + address entry_point, + Register arg_1, + bool check_exceptions) { + pass_arg1(this, arg_1); + super_call_VM(oop_result, last_java_sp, entry_point, 1, check_exceptions); +} + +void MacroAssembler::super_call_VM(Register oop_result, + Register last_java_sp, + address entry_point, + Register arg_1, + Register arg_2, + bool check_exceptions) { + + LP64_ONLY(assert(arg_1 != c_rarg2, "smashed arg")); + pass_arg2(this, arg_2); + pass_arg1(this, arg_1); + super_call_VM(oop_result, last_java_sp, entry_point, 2, check_exceptions); +} + +void MacroAssembler::super_call_VM(Register oop_result, + Register last_java_sp, + address entry_point, + Register arg_1, + Register arg_2, + Register arg_3, + bool check_exceptions) { + LP64_ONLY(assert(arg_1 != c_rarg3, "smashed arg")); + LP64_ONLY(assert(arg_2 != c_rarg3, "smashed arg")); + pass_arg3(this, arg_3); + LP64_ONLY(assert(arg_1 != c_rarg2, "smashed arg")); + pass_arg2(this, arg_2); + pass_arg1(this, arg_1); + super_call_VM(oop_result, last_java_sp, entry_point, 3, check_exceptions); +} + void MacroAssembler::call_VM_base(Register oop_result, Register java_thread, Register last_java_sp, @@ -6039,6 +6095,43 @@ call_VM_leaf(entry_point, 3); } +void MacroAssembler::super_call_VM_leaf(address entry_point, Register arg_0) { + pass_arg0(this, arg_0); + MacroAssembler::call_VM_leaf_base(entry_point, 1); +} + +void MacroAssembler::super_call_VM_leaf(address entry_point, Register arg_0, Register arg_1) { + + LP64_ONLY(assert(arg_0 != c_rarg1, "smashed arg")); + pass_arg1(this, arg_1); + pass_arg0(this, arg_0); + MacroAssembler::call_VM_leaf_base(entry_point, 2); +} + +void MacroAssembler::super_call_VM_leaf(address entry_point, Register arg_0, Register arg_1, Register arg_2) { + LP64_ONLY(assert(arg_0 != c_rarg2, "smashed arg")); + LP64_ONLY(assert(arg_1 != c_rarg2, "smashed arg")); + pass_arg2(this, arg_2); + LP64_ONLY(assert(arg_0 != c_rarg1, "smashed arg")); + pass_arg1(this, arg_1); + pass_arg0(this, arg_0); + MacroAssembler::call_VM_leaf_base(entry_point, 3); +} + +void MacroAssembler::super_call_VM_leaf(address entry_point, Register arg_0, Register arg_1, Register arg_2, Register arg_3) { + LP64_ONLY(assert(arg_0 != c_rarg3, "smashed arg")); + LP64_ONLY(assert(arg_1 != c_rarg3, "smashed arg")); + LP64_ONLY(assert(arg_2 != c_rarg3, "smashed arg")); + pass_arg3(this, arg_3); + LP64_ONLY(assert(arg_0 != c_rarg2, "smashed arg")); + LP64_ONLY(assert(arg_1 != c_rarg2, "smashed arg")); + pass_arg2(this, arg_2); + LP64_ONLY(assert(arg_0 != c_rarg1, "smashed arg")); + pass_arg1(this, arg_1); + pass_arg0(this, arg_0); + MacroAssembler::call_VM_leaf_base(entry_point, 4); +} + void MacroAssembler::check_and_handle_earlyret(Register java_thread) { } @@ -6902,26 +6995,39 @@ #ifndef SERIALGC void MacroAssembler::g1_write_barrier_pre(Register obj, -#ifndef _LP64 + Register pre_val, Register thread, -#endif Register tmp, - Register tmp2, - bool tosca_live) { - LP64_ONLY(Register thread = r15_thread;) + bool tosca_live, + bool expand_call) { + + // If expand_call is true then we expand the call_VM_leaf macro + // directly to skip generating the check by + // InterpreterMacroAssembler::call_VM_leaf_base that checks _last_sp. + +#ifdef _LP64 + assert(thread == r15_thread, "must be"); +#endif // _LP64 + + Label done; + Label runtime; + + assert(pre_val != noreg, "check this code"); + + if (obj != noreg) { + assert_different_registers(obj, pre_val, tmp); + assert(pre_val != rax, "check this code"); + } + Address in_progress(thread, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_active())); - Address index(thread, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_index())); Address buffer(thread, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_buf())); - Label done; - Label runtime; - - // if (!marking_in_progress) goto done; + // Is marking active? if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { cmpl(in_progress, 0); } else { @@ -6930,65 +7036,92 @@ } jcc(Assembler::equal, done); - // if (x.f == NULL) goto done; -#ifdef _LP64 - load_heap_oop(tmp2, Address(obj, 0)); -#else - movptr(tmp2, Address(obj, 0)); -#endif - cmpptr(tmp2, (int32_t) NULL_WORD); + // Do we need to load the previous value? + if (obj != noreg) { + load_heap_oop(pre_val, Address(obj, 0)); + } + + // Is the previous value null? + cmpptr(pre_val, (int32_t) NULL_WORD); jcc(Assembler::equal, done); // Can we store original value in the thread's buffer? - -#ifdef _LP64 - movslq(tmp, index); - cmpq(tmp, 0); -#else - cmpl(index, 0); -#endif - jcc(Assembler::equal, runtime); -#ifdef _LP64 - subq(tmp, wordSize); - movl(index, tmp); - addq(tmp, buffer); -#else - subl(index, wordSize); - movl(tmp, buffer); - addl(tmp, index); -#endif - movptr(Address(tmp, 0), tmp2); + // Is index == 0? + // (The index field is typed as size_t.) + + movptr(tmp, index); // tmp := *index_adr + cmpptr(tmp, 0); // tmp == 0? + jcc(Assembler::equal, runtime); // If yes, goto runtime + + subptr(tmp, wordSize); // tmp := tmp - wordSize + movptr(index, tmp); // *index_adr := tmp + addptr(tmp, buffer); // tmp := tmp + *buffer_adr + + // Record the previous value + movptr(Address(tmp, 0), pre_val); jmp(done); + bind(runtime); // save the live input values if(tosca_live) push(rax); - push(obj); -#ifdef _LP64 - call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), tmp2, r15_thread); -#else - push(thread); - call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), tmp2, thread); - pop(thread); -#endif - pop(obj); + + if (obj != noreg && obj != rax) + push(obj); + + if (pre_val != rax) + push(pre_val); + + // Calling the runtime using the regular call_VM_leaf mechanism generates + // code (generated by InterpreterMacroAssember::call_VM_leaf_base) + // that checks that the *(ebp+frame::interpreter_frame_last_sp) == NULL. + // + // If we care generating the pre-barrier without a frame (e.g. in the + // intrinsified Reference.get() routine) then ebp might be pointing to + // the caller frame and so this check will most likely fail at runtime. + // + // Expanding the call directly bypasses the generation of the check. + // So when we do not have have a full interpreter frame on the stack + // expand_call should be passed true. + + NOT_LP64( push(thread); ) + + if (expand_call) { + LP64_ONLY( assert(pre_val != c_rarg1, "smashed arg"); ) + pass_arg1(this, thread); + pass_arg0(this, pre_val); + MacroAssembler::call_VM_leaf_base(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), 2); + } else { + call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), pre_val, thread); + } + + NOT_LP64( pop(thread); ) + + // save the live input values + if (pre_val != rax) + pop(pre_val); + + if (obj != noreg && obj != rax) + pop(obj); + if(tosca_live) pop(rax); + bind(done); - } void MacroAssembler::g1_write_barrier_post(Register store_addr, Register new_val, -#ifndef _LP64 Register thread, -#endif Register tmp, Register tmp2) { - - LP64_ONLY(Register thread = r15_thread;) +#ifdef _LP64 + assert(thread == r15_thread, "must be"); +#endif // _LP64 + Address queue_index(thread, in_bytes(JavaThread::dirty_card_queue_offset() + PtrQueue::byte_offset_of_index())); Address buffer(thread, in_bytes(JavaThread::dirty_card_queue_offset() + PtrQueue::byte_offset_of_buf())); + BarrierSet* bs = Universe::heap()->barrier_set(); CardTableModRefBS* ct = (CardTableModRefBS*)bs; Label done; @@ -7067,7 +7200,6 @@ pop(store_addr); bind(done); - } #endif // SERIALGC