1.1 --- a/src/cpu/sparc/vm/stubGenerator_sparc.cpp Thu Aug 25 20:29:30 2011 -0700
1.2 +++ b/src/cpu/sparc/vm/stubGenerator_sparc.cpp Fri Aug 26 08:52:22 2011 -0700
1.3 @@ -3069,6 +3069,34 @@
1.4 return start;
1.5 }
1.6
1.7 + //
1.8 + // Generate stub for heap zeroing.
1.9 + // "to" address is aligned to jlong (8 bytes).
1.10 + //
1.11 + // Arguments for generated stub:
1.12 + // to: O0
1.13 + // count: O1 treated as signed (count of HeapWord)
1.14 + // count could be 0
1.15 + //
1.16 + address generate_zero_aligned_words(const char* name) {
1.17 + __ align(CodeEntryAlignment);
1.18 + StubCodeMark mark(this, "StubRoutines", name);
1.19 + address start = __ pc();
1.20 +
1.21 + const Register to = O0; // source array address
1.22 + const Register count = O1; // HeapWords count
1.23 + const Register temp = O2; // scratch
1.24 +
1.25 + Label Ldone;
1.26 + __ sllx(count, LogHeapWordSize, count); // to bytes count
1.27 + // Use BIS for zeroing
1.28 + __ bis_zeroing(to, count, temp, Ldone);
1.29 + __ bind(Ldone);
1.30 + __ retl();
1.31 + __ delayed()->nop();
1.32 + return start;
1.33 +}
1.34 +
1.35 void generate_arraycopy_stubs() {
1.36 address entry;
1.37 address entry_jbyte_arraycopy;
1.38 @@ -3195,6 +3223,10 @@
1.39 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill");
1.40 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill");
1.41 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill");
1.42 +
1.43 + if (UseBlockZeroing) {
1.44 + StubRoutines::_zero_aligned_words = generate_zero_aligned_words("zero_aligned_words");
1.45 + }
1.46 }
1.47
1.48 void generate_initial() {
