132 lines
3.5 KiB
C++
132 lines
3.5 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2015 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_CPU_BACKEND_X64_X64_STACK_LAYOUT_H_
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#define XENIA_CPU_BACKEND_X64_X64_STACK_LAYOUT_H_
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#include "xenia/cpu/backend/x64/x64_backend.h"
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#include "xenia/cpu/backend/x64/x64_emitter.h"
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namespace xe {
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namespace cpu {
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namespace backend {
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namespace x64 {
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/**
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* Stack Layout
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* ----------------------------
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* NOTE: stack must always be 16b aligned.
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*
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* Thunk stack:
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* +------------------+
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* | arg temp, 3 * 8 | rsp + 0
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* | |
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* | |
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* +------------------+
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* | scratch, 16b | rsp + 32
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* | |
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* +------------------+
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* | rbx | rsp + 48
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* +------------------+
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* | rcx / context | rsp + 56
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* +------------------+
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* | rbp | rsp + 64
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* +------------------+
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* | rsi | rsp + 72
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* +------------------+
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* | rdi | rsp + 80
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* +------------------+
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* | r12 | rsp + 88
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* +------------------+
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* | r13 | rsp + 96
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* +------------------+
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* | r14 | rsp + 104
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* +------------------+
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* | r15 | rsp + 112
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* +------------------+
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* | (return address) | rsp + 120
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* +------------------+
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* | (rcx home) | rsp + 128
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* +------------------+
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* | (rdx home) | rsp + 136
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* +------------------+
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*
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*
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* TODO:
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* +------------------+
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* | xmm6 | rsp + 128
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* | |
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* +------------------+
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* | xmm7 | rsp + 144
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* | |
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* +------------------+
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* | xmm8 | rsp + 160
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* | |
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* +------------------+
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* | xmm9 | rsp + 176
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* | |
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* +------------------+
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* | xmm10 | rsp + 192
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* | |
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* +------------------+
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* | xmm11 | rsp + 208
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* | |
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* +------------------+
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* | xmm12 | rsp + 224
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* | |
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* +------------------+
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* | xmm13 | rsp + 240
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* | |
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* +------------------+
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* | xmm14 | rsp + 256
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* | |
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* +------------------+
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* | xmm15 | rsp + 272
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* | |
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* +------------------+
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*
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* Guest stack:
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* +------------------+
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* | arg temp, 3 * 8 | rsp + 0
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* | |
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* | |
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* +------------------+
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* | scratch, 48b | rsp + 32
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* | |
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* +------------------+
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* | rcx / context | rsp + 80
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* +------------------+
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* | guest ret addr | rsp + 88
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* +------------------+
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* | call ret addr | rsp + 96
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* +------------------+
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* ... locals ...
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* +------------------+
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* | (return address) |
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* +------------------+
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*
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*/
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class StackLayout {
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public:
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static const size_t THUNK_STACK_SIZE = 120;
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static const size_t GUEST_STACK_SIZE = 104;
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static const size_t GUEST_RCX_HOME = 80;
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static const size_t GUEST_RET_ADDR = 88;
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static const size_t GUEST_CALL_RET_ADDR = 96;
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};
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} // namespace x64
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} // namespace backend
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} // namespace cpu
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} // namespace xe
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#endif // XENIA_CPU_BACKEND_X64_X64_STACK_LAYOUT_H_
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