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comparison src/cpu/ppc/vm/runtime_ppc.cpp @ 17803:31e80afe3fed

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8035647: PPC64: Support for elf v2 abi. Summary: ELFv2 ABI used by the little endian PowerPC64 on Linux. Reviewed-by: kvn Contributed-by: asmundak@google.com
author goetz
date Thu, 06 Mar 2014 10:55:28 -0800
parents 67fa91961822
children 92aa6797d639
comparison
equal deleted inserted replaced
17802:7c462558a08a 17803:31e80afe3fed
85 CodeBuffer buffer("exception_blob", 2048, 1024); 85 CodeBuffer buffer("exception_blob", 2048, 1024);
86 InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer); 86 InterpreterMacroAssembler* masm = new InterpreterMacroAssembler(&buffer);
87 87
88 address start = __ pc(); 88 address start = __ pc();
89 89
90 int frame_size_in_bytes = frame::abi_112_size; 90 int frame_size_in_bytes = frame::abi_reg_args_size;
91 OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); 91 OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0);
92 92
93 // Exception pc is 'return address' for stack walker. 93 // Exception pc is 'return address' for stack walker.
94 __ std(R4_ARG2/*exception pc*/, _abi(lr), R1_SP); 94 __ std(R4_ARG2/*exception pc*/, _abi(lr), R1_SP);
95 95
97 __ std(R3_ARG1/*exception oop*/, in_bytes(JavaThread::exception_oop_offset()), R16_thread); 97 __ std(R3_ARG1/*exception oop*/, in_bytes(JavaThread::exception_oop_offset()), R16_thread);
98 __ std(R4_ARG2/*exception pc*/, in_bytes(JavaThread::exception_pc_offset()), R16_thread); 98 __ std(R4_ARG2/*exception pc*/, in_bytes(JavaThread::exception_pc_offset()), R16_thread);
99 99
100 // Save callee-saved registers. 100 // Save callee-saved registers.
101 // Push a C frame for the exception blob. It is needed for the C call later on. 101 // Push a C frame for the exception blob. It is needed for the C call later on.
102 __ push_frame_abi112(0, R11_scratch1); 102 __ push_frame_reg_args(0, R11_scratch1);
103 103
104 // This call does all the hard work. It checks if an exception handler 104 // This call does all the hard work. It checks if an exception handler
105 // exists in the method. 105 // exists in the method.
106 // If so, it returns the handler address. 106 // If so, it returns the handler address.
107 // If not, it prepares for stack-unwinding, restoring the callee-save 107 // If not, it prepares for stack-unwinding, restoring the callee-save
108 // registers of the frame being removed. 108 // registers of the frame being removed.
109 __ set_last_Java_frame(/*sp=*/R1_SP, noreg); 109 __ set_last_Java_frame(/*sp=*/R1_SP, noreg);
110 110
111 __ mr(R3_ARG1, R16_thread); 111 __ mr(R3_ARG1, R16_thread);
112 #if defined(ABI_ELFv2)
113 __ call_c((address) OptoRuntime::handle_exception_C, relocInfo::none);
114 #else
112 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, OptoRuntime::handle_exception_C), 115 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, OptoRuntime::handle_exception_C),
113 relocInfo::none); 116 relocInfo::none);
117 #endif
114 address calls_return_pc = __ last_calls_return_pc(); 118 address calls_return_pc = __ last_calls_return_pc();
115 # ifdef ASSERT 119 # ifdef ASSERT
116 __ cmpdi(CCR0, R3_RET, 0); 120 __ cmpdi(CCR0, R3_RET, 0);
117 __ asm_assert_ne("handle_exception_C must not return NULL", 0x601); 121 __ asm_assert_ne("handle_exception_C must not return NULL", 0x601);
118 # endif 122 # endif
160 164
161 // Same as above, but also set sp to unextended_sp. 165 // Same as above, but also set sp to unextended_sp.
162 __ bind(mh_callsite); 166 __ bind(mh_callsite);
163 __ mr(R31, R3_RET); // Save branch address. 167 __ mr(R31, R3_RET); // Save branch address.
164 __ mr(R3_ARG1, R16_thread); 168 __ mr(R3_ARG1, R16_thread);
169 #if defined(ABI_ELFv2)
170 __ call_c((address) adjust_SP_for_methodhandle_callsite, relocInfo::none);
171 #else
165 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, adjust_SP_for_methodhandle_callsite), relocInfo::none); 172 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, adjust_SP_for_methodhandle_callsite), relocInfo::none);
173 #endif
166 // Returns unextended_sp in R3_RET. 174 // Returns unextended_sp in R3_RET.
167 175
168 __ mtctr(R31); // Move address of exception handler to SR_CTR. 176 __ mtctr(R31); // Move address of exception handler to SR_CTR.
169 __ reset_last_Java_frame(); 177 __ reset_last_Java_frame();
170 178