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src/hotspot/cpu/s390/jniFastGetField_s390.cpp

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*** 22,143 **** * questions. * */ #include "precompiled.hpp" - #include "asm/macroAssembler.inline.hpp" - #include "gc/shared/barrierSet.hpp" - #include "gc/shared/barrierSetAssembler.hpp" - #include "memory/resourceArea.hpp" #include "prims/jniFastGetField.hpp" #include "prims/jvm_misc.hpp" - #include "runtime/safepoint.hpp" // TSO ensures that loads are blocking and ordered with respect to // to earlier loads, so we don't need LoadLoad membars. #define __ masm-> #define BUFFER_SIZE 30*sizeof(jint) - // Common register usage: - // Z_RET/Z_FRET: result - // Z_ARG1: jni env - // Z_ARG2: obj - // Z_ARG3: jfield id - address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) { ! const char *name; ! switch (type) { ! case T_BOOLEAN: name = "jni_fast_GetBooleanField"; break; ! case T_BYTE: name = "jni_fast_GetByteField"; break; ! case T_CHAR: name = "jni_fast_GetCharField"; break; ! case T_SHORT: name = "jni_fast_GetShortField"; break; ! case T_INT: name = "jni_fast_GetIntField"; break; ! case T_LONG: name = "jni_fast_GetLongField"; break; ! case T_FLOAT: name = "jni_fast_GetFloatField"; break; ! case T_DOUBLE: name = "jni_fast_GetDoubleField"; break; ! default: ShouldNotReachHere(); ! name = NULL; // unreachable ! } ! ResourceMark rm; ! BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE); ! CodeBuffer cbuf(blob); ! MacroAssembler* masm = new MacroAssembler(&cbuf); ! address fast_entry = __ pc(); ! ! Label slow; ! ! // We can only kill the remaining volatile registers. ! const Register Rcounter = Z_ARG4, ! Robj = Z_R1_scratch, ! Rtmp = Z_R0_scratch; ! __ load_const_optimized(Robj, SafepointSynchronize::safepoint_counter_addr()); ! __ z_lg(Rcounter, Address(Robj)); ! __ z_tmll(Rcounter, 1); ! __ z_brnaz(slow); ! ! if (JvmtiExport::can_post_field_access()) { ! // Check to see if a field access watch has been set before we ! // take the fast path. ! __ load_const_optimized(Robj, JvmtiExport::get_field_access_count_addr()); ! __ z_lt(Robj, Address(Robj)); ! __ z_brne(slow); ! } ! ! __ z_lgr(Robj, Z_ARG2); ! BarrierSetAssembler* bs = BarrierSet::barrier_set()->barrier_set_assembler(); ! bs->try_resolve_jobject_in_native(masm, Z_ARG1, Robj, Rtmp, slow); ! ! __ z_srlg(Rtmp, Z_ARG3, 2); // offset ! __ z_agr(Robj, Rtmp); ! ! assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); ! speculative_load_pclist[count] = __ pc(); // Used by the segfault handler ! bool is_fp = false; ! switch (type) { ! case T_BOOLEAN: __ z_llgc(Rtmp, Address(Robj)); break; ! case T_BYTE: __ z_lgb( Rtmp, Address(Robj)); break; ! case T_CHAR: __ z_llgh(Rtmp, Address(Robj)); break; ! case T_SHORT: __ z_lgh( Rtmp, Address(Robj)); break; ! case T_INT: __ z_lgf( Rtmp, Address(Robj)); break; ! case T_LONG: __ z_lg( Rtmp, Address(Robj)); break; ! case T_FLOAT: __ mem2freg_opt(Z_FRET, Address(Robj), false); is_fp = true; break; ! case T_DOUBLE: __ mem2freg_opt(Z_FRET, Address(Robj), true ); is_fp = true; break; ! default: ShouldNotReachHere(); ! } ! ! __ load_const_optimized(Robj, SafepointSynchronize::safepoint_counter_addr()); ! __ z_cg(Rcounter, Address(Robj)); ! __ z_brne(slow); ! ! if (!is_fp) { ! __ z_lgr(Z_RET, Rtmp); ! } ! __ z_br(Z_R14); ! ! slowcase_entry_pclist[count++] = __ pc(); ! __ bind(slow); ! address slow_case_addr; ! switch (type) { ! case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break; ! case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break; ! case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break; ! case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break; ! case T_INT: slow_case_addr = jni_GetIntField_addr(); break; ! case T_LONG: slow_case_addr = jni_GetLongField_addr(); break; ! case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break; ! case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break; ! default: ShouldNotReachHere(); ! slow_case_addr = NULL; // unreachable ! } ! __ load_const_optimized(Robj, slow_case_addr); ! __ z_br(Robj); // tail call ! ! __ flush(); ! ! return fast_entry; } address JNI_FastGetField::generate_fast_get_boolean_field() { return generate_fast_get_int_field0(T_BOOLEAN); } --- 22,44 ---- * questions. * */ #include "precompiled.hpp" #include "prims/jniFastGetField.hpp" #include "prims/jvm_misc.hpp" // TSO ensures that loads are blocking and ordered with respect to // to earlier loads, so we don't need LoadLoad membars. #define __ masm-> #define BUFFER_SIZE 30*sizeof(jint) address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) { ! // Don't use fast jni accessors. ! return (address) -1; } address JNI_FastGetField::generate_fast_get_boolean_field() { return generate_fast_get_int_field0(T_BOOLEAN); }
*** 157,171 **** address JNI_FastGetField::generate_fast_get_int_field() { return generate_fast_get_int_field0(T_INT); } address JNI_FastGetField::generate_fast_get_long_field() { ! return generate_fast_get_int_field0(T_LONG); } address JNI_FastGetField::generate_fast_get_float_field() { ! return generate_fast_get_int_field0(T_FLOAT); } address JNI_FastGetField::generate_fast_get_double_field() { ! return generate_fast_get_int_field0(T_DOUBLE); } --- 58,78 ---- address JNI_FastGetField::generate_fast_get_int_field() { return generate_fast_get_int_field0(T_INT); } address JNI_FastGetField::generate_fast_get_long_field() { ! // Don't use fast jni accessors. ! return (address) -1; ! } ! ! address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) { ! // Don't use fast jni accessors. ! return (address) -1; } address JNI_FastGetField::generate_fast_get_float_field() { ! return generate_fast_get_float_field0(T_FLOAT); } address JNI_FastGetField::generate_fast_get_double_field() { ! return generate_fast_get_float_field0(T_DOUBLE); }
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