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comparison src/cpu/x86/vm/methodHandles_x86.cpp @ 3757:f8c9417e3571

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7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters Reviewed-by: twisti, kvn, jrose
author never
date Tue, 14 Jun 2011 14:41:33 -0700
parents 5cf771a79037
children 38fa55e5e792
comparison
equal deleted inserted replaced
3755:5cf771a79037 3757:f8c9417e3571
1642 // work argslot up to destslot, copying contiguous data downwards 1642 // work argslot up to destslot, copying contiguous data downwards
1643 // pseudo-code: 1643 // pseudo-code:
1644 // rax = src_addr + swap_bytes 1644 // rax = src_addr + swap_bytes
1645 // rbx = dest_addr 1645 // rbx = dest_addr
1646 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; 1646 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++;
1647 __ addptr(rbx_destslot, wordSize); 1647 // dest_slot denotes an exclusive upper limit
1648 int limit_bias = OP_ROT_ARGS_DOWN_LIMIT_BIAS;
1649 if (limit_bias != 0)
1650 __ addptr(rbx_destslot, - limit_bias * wordSize);
1648 move_arg_slots_down(_masm, 1651 move_arg_slots_down(_masm,
1649 Address(rax_argslot, swap_slots * wordSize), 1652 Address(rax_argslot, swap_slots * wordSize),
1650 rbx_destslot, 1653 rbx_destslot,
1651 -swap_slots, 1654 -swap_slots,
1652 rax_argslot, rdx_temp); 1655 rax_argslot, rdx_temp);
1653 1656 __ subptr(rbx_destslot, swap_slots * wordSize);
1654 __ subptr(rbx_destslot, wordSize);
1655 } 1657 }
1656 // pop the original first chunk into the destination slot, now free 1658 // pop the original first chunk into the destination slot, now free
1657 for (int i = 0; i < swap_slots; i++) { 1659 for (int i = 0; i < swap_slots; i++) {
1658 if (i == 0) __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp); 1660 if (i == 0) __ movptr(Address(rbx_destslot, i * wordSize), rdi_temp);
1659 else __ popptr(Address(rbx_destslot, i * wordSize)); 1661 else __ popptr(Address(rbx_destslot, i * wordSize));