Mercurial > hg > truffle
diff src/cpu/sparc/vm/assembler_sparc.cpp @ 622:56aae7be60d4
6812678: macro assembler needs delayed binding of a few constants (for 6655638)
Summary: minor assembler enhancements preparing for method handles
Reviewed-by: kvn
| author | jrose |
|---|---|
| date | Wed, 04 Mar 2009 09:58:39 -0800 |
| parents | a1980da045cc |
| children | 9adddb8c0fc8 |
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--- a/src/cpu/sparc/vm/assembler_sparc.cpp Tue Mar 03 18:25:57 2009 -0800 +++ b/src/cpu/sparc/vm/assembler_sparc.cpp Wed Mar 04 09:58:39 2009 -0800 @@ -2615,6 +2615,29 @@ } } +RegisterConstant MacroAssembler::delayed_value(intptr_t* delayed_value_addr, + Register tmp, + int offset) { + intptr_t value = *delayed_value_addr; + if (value != 0) + return RegisterConstant(value + offset); + + // load indirectly to solve generation ordering problem + Address a(tmp, (address) delayed_value_addr); + load_ptr_contents(a, tmp); + +#ifdef ASSERT + tst(tmp); + breakpoint_trap(zero, xcc); +#endif + + if (offset != 0) + add(tmp, offset, tmp); + + return RegisterConstant(tmp); +} + + void MacroAssembler::biased_locking_enter(Register obj_reg, Register mark_reg, Register temp_reg, Label& done, Label* slow_case, @@ -4057,6 +4080,24 @@ card_table_write(bs->byte_map_base, tmp, store_addr); } +// Loading values by size and signed-ness +void MacroAssembler::load_sized_value(Register s1, RegisterConstant s2, Register d, + int size_in_bytes, bool is_signed) { + switch (size_in_bytes ^ (is_signed ? -1 : 0)) { + case ~8: // fall through: + case 8: ld_long( s1, s2, d ); break; + case ~4: ldsw( s1, s2, d ); break; + case 4: lduw( s1, s2, d ); break; + case ~2: ldsh( s1, s2, d ); break; + case 2: lduh( s1, s2, d ); break; + case ~1: ldsb( s1, s2, d ); break; + case 1: ldub( s1, s2, d ); break; + default: ShouldNotReachHere(); + } +} + + + void MacroAssembler::load_klass(Register src_oop, Register klass) { // The number of bytes in this code is used by // MachCallDynamicJavaNode::ret_addr_offset()