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8229977: Shenandoah: save/restore FPU state aroud LRB runtime call

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Reviewed-by: shade
This commit is contained in:
Roman Kennke 2019-08-21 18:05:31 +02:00
parent 9ccb4dc212
commit 864380ada9
1 changed files with 8 additions and 4 deletions
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12
src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp
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@ -934,7 +934,7 @@ address ShenandoahBarrierSetAssembler::generate_shenandoah_lrb(StubCodeGenerator
StubCodeMark mark(cgen, "StubRoutines", "shenandoah_lrb");
address start = __ pc();
Label resolve_oop, slow_path, done;
Label resolve_oop, slow_path;
// We use RDI, which also serves as argument register for slow call.
// RAX always holds the src object ptr, except after the slow call,
@ -971,7 +971,6 @@ address ShenandoahBarrierSetAssembler::generate_shenandoah_lrb(StubCodeGenerator
// At this point, tmp2 contains the decoded forwarding pointer.
__ mov(rax, tmp2);
__ bind(done);
__ pop(tmp2);
__ pop(tmp1);
__ ret(0);
@ -992,9 +991,14 @@ address ShenandoahBarrierSetAssembler::generate_shenandoah_lrb(StubCodeGenerator
__ push(r14);
__ push(r15);
#endif
__ push(rbp);
__ movptr(rbp, rsp);
__ andptr(rsp, -StackAlignmentInBytes);
__ push_FPU_state();
__ call_VM_leaf(CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier), rax);
__ pop_FPU_state();
__ movptr(rsp, rbp);
__ pop(rbp);
#ifdef _LP64
__ pop(r15);
__ pop(r14);