42065
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/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2016 SAP SE. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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// Major contributions by ML, AHa.
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#ifndef CPU_S390_VM_FRAME_S390_HPP
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#define CPU_S390_VM_FRAME_S390_HPP
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#include "runtime/synchronizer.hpp"
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// C frame layout on ZARCH_64.
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//
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// In this figure the stack grows upwards, while memory grows
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// downwards. See "Linux for zSeries: ELF Application Binary Interface Supplement",
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// IBM Corp. (LINUX-1107-01)
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//
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// Square brackets denote stack regions possibly larger
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// than a single 64 bit slot.
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//
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// STACK:
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// 0 [C_FRAME] <-- SP after prolog (mod 8 = 0)
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// [C_FRAME] <-- SP before prolog
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// ...
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// [C_FRAME]
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//
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// C_FRAME:
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// 0 [ABI_160]
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//
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// ABI_160:
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// 0 [ABI_16]
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// 16 CARG_1: spill slot for outgoing arg 1. used by next callee.
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// 24 CARG_2: spill slot for outgoing arg 2. used by next callee.
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// 32 CARG_3: spill slot for outgoing arg 3. used by next callee.
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// 40 CARG_4: spill slot for outgoing arg 4. used by next callee.
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// 48 GPR_6: spill slot for GPR_6. used by next callee.
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// ... ...
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// 120 GPR_15: spill slot for GPR_15. used by next callee.
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// 128 CFARG_1: spill slot for outgoing fp arg 1. used by next callee.
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// 136 CFARG_2: spill slot for outgoing fp arg 2. used by next callee.
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// 144 CFARG_3: spill slot for outgoing fp arg 3. used by next callee.
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// 152 CFARG_4: spill slot for outgoing fp arg 4. used by next callee.
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// 160 [REMAINING CARGS]
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//
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// ABI_16:
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// 0 callers_sp
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// 8 return_pc
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public:
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// C frame layout
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typedef enum {
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// stack alignment
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alignment_in_bytes = 8,
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// log_2(8*8 bits) = 6.
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log_2_of_alignment_in_bits = 6
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} frame_constants;
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struct z_abi_16 {
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uint64_t callers_sp;
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uint64_t return_pc;
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};
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enum {
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z_abi_16_size = sizeof(z_abi_16)
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};
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#define _z_abi16(_component) \
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(offset_of(frame::z_abi_16, _component))
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// ABI_160:
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// REMARK: This structure should reflect the "minimal" ABI frame
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// layout, but it doesn't. There is an extra field at the end of the
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// structure that marks the area where arguments are passed, when
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// the argument registers "overflow". Thus, sizeof(z_abi_160)
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// doesn't yield the expected (and desired) result. Therefore, as
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// long as we do not provide extra infrastructure, one should use
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// either z_abi_160_size, or _z_abi(remaining_cargs) instead of
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// sizeof(...).
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struct z_abi_160 {
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uint64_t callers_sp;
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uint64_t return_pc;
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uint64_t carg_1;
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uint64_t carg_2;
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uint64_t carg_3;
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uint64_t carg_4;
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uint64_t gpr6;
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uint64_t gpr7;
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uint64_t gpr8;
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uint64_t gpr9;
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uint64_t gpr10;
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uint64_t gpr11;
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uint64_t gpr12;
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uint64_t gpr13;
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uint64_t gpr14;
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uint64_t gpr15;
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uint64_t cfarg_1;
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uint64_t cfarg_2;
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uint64_t cfarg_3;
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uint64_t cfarg_4;
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uint64_t remaining_cargs;
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};
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enum {
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z_abi_160_size = 160
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};
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#define _z_abi(_component) \
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(offset_of(frame::z_abi_160, _component))
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struct z_abi_160_spill : z_abi_160 {
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// Additional spill slots. Use as 'offset_of(z_abi_160_spill, spill[n])'.
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uint64_t spill[0];
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// Aligned to frame::alignment_in_bytes (16).
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};
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// non-volatile GPRs:
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struct z_spill_nonvolatiles {
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uint64_t r6;
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uint64_t r7;
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uint64_t r8;
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uint64_t r9;
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uint64_t r10;
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uint64_t r11;
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uint64_t r12;
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uint64_t r13;
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};
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enum {
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z_spill_nonvolatiles_size = sizeof(z_spill_nonvolatiles)
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};
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#define _z_spill_nonvolatiles_neg(_component) \
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(-frame::z_spill_nonvolatiles_size + offset_of(frame::z_spill_nonvolatiles, _component))
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// Frame layout for the Java template interpreter on z/Architecture.
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//
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// In these figures the stack grows upwards, while memory grows
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// downwards. Square brackets denote regions possibly larger than
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// single 64 bit slots.
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//
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// STACK (no JNI, no compiled code, no library calls, template interpreter is active):
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//
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// 0 [TOP_IJAVA_FRAME]
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// [PARENT_IJAVA_FRAME]
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// [PARENT_IJAVA_FRAME]
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// ...
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// [PARENT_IJAVA_FRAME]
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// [ENTRY_FRAME]
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// [C_FRAME]
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// ...
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// [C_FRAME]
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//
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// TOP_IJAVA_FRAME:
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//
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// 0 [TOP_IJAVA_FRAME_ABI]
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// 16 [operand stack]
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// [monitors] (optional)
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// [IJAVA_STATE]
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// note: Own locals are located in the caller frame.
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//
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// PARENT_IJAVA_FRAME:
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//
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// 0 [PARENT_IJAVA_FRAME_ABI]
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// [callee's locals w/o arguments]
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// [outgoing arguments]
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// [used part of operand stack w/o arguments]
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// [monitors] (optional)
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// [IJAVA_STATE]
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//
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// ENTRY_FRAME:
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//
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// 0 [PARENT_IJAVA_FRAME_ABI]
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// [callee's locals w/o arguments]
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// [outgoing arguments]
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// [ENTRY_FRAME_LOCALS]
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//
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// TOP_IJAVA_FRAME_ABI:
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//
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// 0 [ABI_160]
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//
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//
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// PARENT_IJAVA_FRAME_ABI:
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//
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// 0 [ABI_16]
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//
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// IJAVA_STATE:
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//
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// 0 method
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// 8 locals
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// monitors : monitor block top (i.e. lowest address)
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// cpoolCache
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// bcp
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// mdx
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// esp : Points to first slot above operands.
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// sender_sp : See comment in z_ijava_state.
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// top_frame_sp : Own SP before modification by i2c adapter.
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// oop_tmp
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// lresult
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// fresult
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//
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// EXAMPLE:
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// ---------
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//
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// 3 monitors, 5 operand stack slots max. / 3 allocated
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//
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// F0 callers_sp <- Z_SP (callers_sp == Z_fp (own fp))
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// return_pc
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// [rest of ABI_160]
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// /slot 4: free
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// oper. | slot 3: free <- Z_esp points to first free slot
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// stack | slot 2: ref val v2 caches IJAVA_STATE.esp
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// | slot 1: unused
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// \slot 0: long val v1
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// /slot 5 <- IJAVA_STATE.monitors = monitor block top
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// | slot 4
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// monitors| slot 3
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// | slot 2
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// | slot 1
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// \slot 0
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// [IJAVA_STATE] <- monitor block bot (points to first byte in IJAVA_STATE)
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// F1 [PARENT_IJAVA_FRAME_ABI] <- Z_fp (== *Z_SP, points to slot just below IJAVA_STATE)
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// [F0's locals] <- Z_locals, locals[i] := *(Z_locals - i*BytesPerWord)
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// [F1's operand stack]
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// [F1's monitors] (optional)
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// [IJAVA_STATE]
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public:
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// PARENT_IJAVA_FRAME_ABI
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struct z_parent_ijava_frame_abi : z_abi_16 {
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};
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enum {
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z_parent_ijava_frame_abi_size = sizeof(z_parent_ijava_frame_abi)
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};
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#define _z_parent_ijava_frame_abi(_component) \
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(offset_of(frame::z_parent_ijava_frame_abi, _component))
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// TOP_IJAVA_FRAME_ABI
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struct z_top_ijava_frame_abi : z_abi_160 {
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};
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enum {
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z_top_ijava_frame_abi_size = sizeof(z_top_ijava_frame_abi)
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};
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#define _z_top_ijava_frame_abi(_component) \
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(offset_of(frame::z_top_ijava_frame_abi, _component))
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// IJAVA_STATE
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struct z_ijava_state{
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DEBUG_ONLY(uint64_t magic;) // wrong magic -> wrong state!
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uint64_t method;
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uint64_t mirror;
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uint64_t locals; // Z_locals
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uint64_t monitors;
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uint64_t cpoolCache;
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uint64_t bcp; // Z_bcp
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uint64_t mdx;
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uint64_t esp; // Z_esp
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// Caller's original SP before modification by c2i adapter (if caller is compiled)
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// and before top -> parent frame conversion by the interpreter entry.
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// Note: for i2i calls a correct sender_sp is required, too, because there
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// we cannot use the caller's top_frame_sp as sp when removing the callee
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// frame (caller could be compiled or entry frame). Therefore the sender_sp
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// has to be the interpreted caller's sp as TOP_IJAVA_FRAME. See also
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// AbstractInterpreter::layout_activation() used by deoptimization.
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uint64_t sender_sp;
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// Own SP before modification by i2c adapter and top-2-parent-resize
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// by interpreted callee.
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uint64_t top_frame_sp;
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// Slots only needed for native calls. Maybe better to move elsewhere.
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uint64_t oop_tmp;
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uint64_t lresult;
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uint64_t fresult;
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};
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enum {
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z_ijava_state_size = sizeof(z_ijava_state)
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};
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#ifdef ASSERT
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enum {
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z_istate_magic_number = 0x900d // ~= good magic
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};
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#endif
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#define _z_ijava_state_neg(_component) \
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(int) (-frame::z_ijava_state_size + offset_of(frame::z_ijava_state, _component))
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// ENTRY_FRAME
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struct z_entry_frame_locals {
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uint64_t call_wrapper_address;
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uint64_t result_address;
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uint64_t result_type;
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uint64_t arguments_tos_address;
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// Callee saved registers are spilled to caller frame.
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// Caller must have z_abi_160.
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};
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enum {
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z_entry_frame_locals_size = sizeof(z_entry_frame_locals)
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};
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#define _z_entry_frame_locals_neg(_component) \
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(int) (-frame::z_entry_frame_locals_size + offset_of(frame::z_entry_frame_locals, _component))
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// Frame layout for JIT generated methods
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//
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// In these figures the stack grows upwards, while memory grows
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// downwards. Square brackets denote regions possibly larger than single
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// 64 bit slots.
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//
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// STACK (interpreted Java calls JIT generated Java):
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//
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// [JIT_FRAME] <-- SP (mod 16 = 0)
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// [TOP_IJAVA_FRAME]
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// ...
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//
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//
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// JIT_FRAME (is a C frame according to z/Architecture ABI):
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//
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// [out_preserve]
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// [out_args]
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// [spills]
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// [monitor] (optional)
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// ...
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// [monitor] (optional)
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// [in_preserve] added / removed by prolog / epilog
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public:
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struct z_top_jit_abi_32 {
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uint64_t callers_sp;
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uint64_t return_pc;
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uint64_t toc;
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uint64_t tmp;
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};
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#define _z_top_jit_abi(_component) \
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(offset_of(frame::z_top_jit_abi_32, _component))
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struct jit_monitor {
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uint64_t monitor[1];
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};
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struct jit_in_preserve {
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// Used to provide a z/Architecture ABI on top of a jit frame.
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// nothing to add here!
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};
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struct jit_out_preserve : z_top_jit_abi_32 {
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// Nothing to add here!
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};
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enum {
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z_jit_out_preserve_size = sizeof(jit_out_preserve)
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};
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typedef enum {
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jit_monitor_size_in_4_byte_units = sizeof(jit_monitor) / 4,
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// Stack alignment requirement. Log_2 of alignment size in bits.
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// log_2(16*8 bits) = 7.
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jit_log_2_of_stack_alignment_in_bits = 7,
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jit_out_preserve_size_in_4_byte_units = sizeof(jit_out_preserve) / 4,
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jit_in_preserve_size_in_4_byte_units = sizeof(jit_in_preserve) / 4
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} jit_frame_constants;
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// C2I adapter frames:
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//
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// STACK (interpreted called from compiled, on entry to frame manager):
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//
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// [TOP_C2I_FRAME]
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// [JIT_FRAME]
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// ...
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//
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//
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413 |
// STACK (interpreted called from compiled, after interpreter has been pushed):
|
|
414 |
//
|
|
415 |
// [TOP_IJAVA_FRAME]
|
|
416 |
// [PARENT_C2I_FRAME]
|
|
417 |
// [JIT_FRAME]
|
|
418 |
// ...
|
|
419 |
//
|
|
420 |
//
|
|
421 |
// TOP_C2I_FRAME:
|
|
422 |
//
|
|
423 |
// [TOP_IJAVA_FRAME_ABI]
|
|
424 |
// [outgoing Java arguments]
|
|
425 |
// alignment (optional)
|
|
426 |
//
|
|
427 |
//
|
|
428 |
// PARENT_C2I_FRAME:
|
|
429 |
//
|
|
430 |
// [PARENT_IJAVA_FRAME_ABI]
|
|
431 |
// alignment (optional)
|
|
432 |
// [callee's locals w/o arguments]
|
|
433 |
// [outgoing Java arguments]
|
|
434 |
// alignment (optional)
|
|
435 |
|
|
436 |
private:
|
|
437 |
|
|
438 |
// STACK:
|
|
439 |
// ...
|
|
440 |
// [THIS_FRAME] <-- this._sp (stack pointer for this frame)
|
|
441 |
// [CALLER_FRAME] <-- this.fp() (_sp of caller's frame)
|
|
442 |
// ...
|
|
443 |
//
|
|
444 |
|
|
445 |
// NOTE: Stack pointer is now held in the base class, so remove it from here.
|
|
446 |
|
|
447 |
// Frame pointer for this frame.
|
|
448 |
intptr_t* _fp;
|
|
449 |
|
|
450 |
// Needed by deoptimization.
|
|
451 |
intptr_t* _unextended_sp;
|
|
452 |
|
|
453 |
public:
|
|
454 |
|
|
455 |
// Interface for all frames:
|
|
456 |
|
|
457 |
// Accessors
|
|
458 |
|
|
459 |
inline intptr_t* fp() const { return _fp; }
|
|
460 |
|
|
461 |
private:
|
|
462 |
|
|
463 |
inline void find_codeblob_and_set_pc_and_deopt_state(address pc);
|
|
464 |
|
|
465 |
// Constructors
|
|
466 |
|
|
467 |
public:
|
|
468 |
frame(intptr_t* sp);
|
|
469 |
// To be used, if sp was not extended to match callee's calling convention.
|
|
470 |
frame(intptr_t* sp, address pc);
|
|
471 |
frame(intptr_t* sp, address pc, intptr_t* unextended_sp);
|
|
472 |
|
|
473 |
// Access frame via stack pointer.
|
|
474 |
inline intptr_t* sp_addr_at(int index) const { return &sp()[index]; }
|
|
475 |
inline intptr_t sp_at( int index) const { return *sp_addr_at(index); }
|
|
476 |
|
|
477 |
// Access ABIs.
|
|
478 |
inline z_abi_16* own_abi() const { return (z_abi_16*) sp(); }
|
|
479 |
inline z_abi_160* callers_abi() const { return (z_abi_160*) fp(); }
|
|
480 |
|
|
481 |
private:
|
|
482 |
|
|
483 |
intptr_t* compiled_sender_sp(CodeBlob* cb) const;
|
|
484 |
address* compiled_sender_pc_addr(CodeBlob* cb) const;
|
|
485 |
|
|
486 |
address* sender_pc_addr(void) const;
|
|
487 |
|
|
488 |
public:
|
|
489 |
|
|
490 |
// Additional interface for interpreter frames:
|
|
491 |
static int interpreter_frame_interpreterstate_size_in_bytes();
|
|
492 |
static int interpreter_frame_monitor_size_in_bytes();
|
|
493 |
|
|
494 |
private:
|
|
495 |
|
|
496 |
// template interpreter state
|
|
497 |
inline z_ijava_state* ijava_state() const;
|
|
498 |
|
|
499 |
// Where z_ijava_state.monitors is saved.
|
|
500 |
inline BasicObjectLock** interpreter_frame_monitors_addr() const;
|
|
501 |
// Where z_ijava_state.esp is saved.
|
|
502 |
inline intptr_t** interpreter_frame_esp_addr() const;
|
|
503 |
|
|
504 |
public:
|
|
505 |
inline intptr_t* interpreter_frame_top_frame_sp();
|
|
506 |
inline void interpreter_frame_set_tos_address(intptr_t* x);
|
|
507 |
inline void interpreter_frame_set_top_frame_sp(intptr_t* top_frame_sp);
|
|
508 |
inline void interpreter_frame_set_sender_sp(intptr_t* sender_sp);
|
|
509 |
#ifdef ASSERT
|
|
510 |
inline void interpreter_frame_set_magic();
|
|
511 |
#endif
|
|
512 |
|
|
513 |
// monitors:
|
|
514 |
|
|
515 |
// Next two functions read and write z_ijava_state.monitors.
|
|
516 |
private:
|
|
517 |
inline BasicObjectLock* interpreter_frame_monitors() const;
|
|
518 |
inline void interpreter_frame_set_monitors(BasicObjectLock* monitors);
|
|
519 |
|
|
520 |
public:
|
|
521 |
|
|
522 |
// Additional interface for entry frames:
|
|
523 |
inline z_entry_frame_locals* entry_frame_locals() const {
|
|
524 |
return (z_entry_frame_locals*) (((address) fp()) - z_entry_frame_locals_size);
|
|
525 |
}
|
|
526 |
|
|
527 |
public:
|
|
528 |
|
|
529 |
// Get caller pc from stack slot of gpr14.
|
|
530 |
address native_sender_pc() const;
|
|
531 |
// Get caller pc from stack slot of gpr10.
|
|
532 |
address callstub_sender_pc() const;
|
|
533 |
|
|
534 |
// Dump all frames starting at a given C stack pointer.
|
|
535 |
// max_frames: Limit number of traced frames.
|
|
536 |
// <= 0 --> full trace
|
|
537 |
// > 0 --> trace the #max_frames topmost frames
|
|
538 |
static void back_trace(outputStream* st, intptr_t* start_sp, intptr_t* top_pc,
|
|
539 |
unsigned long flags, int max_frames = 0);
|
|
540 |
|
|
541 |
enum {
|
|
542 |
// This enum value specifies the offset from the pc remembered by
|
|
543 |
// call instructions to the location where control returns to
|
|
544 |
// after a normal return. Most architectures remember the return
|
|
545 |
// location directly, i.e. the offset is zero. This is the case
|
|
546 |
// for z/Architecture, too.
|
|
547 |
//
|
|
548 |
// Normal return address is the instruction following the branch.
|
|
549 |
pc_return_offset = 0,
|
|
550 |
};
|
|
551 |
|
|
552 |
#endif // CPU_S390_VM_FRAME_S390_HPP
|