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https://github.com/xenia-project/xenia.git
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136 lines
5 KiB
C++
136 lines
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/base/vec128.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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class StackLayout {
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public:
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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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* Non-Volatile Volatile
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* +------------------+------------------+
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* | arg temp, 3 * 8 | arg temp, 3 * 8 | rsp + 0x000
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* | | |
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* | | |
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* +------------------+------------------+
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* | rbx | (unused) | rsp + 0x018
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* +------------------+------------------+
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* | rbp | rcx | rsp + 0x020
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* +------------------+------------------+
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* | rcx (Win32) | rdx | rsp + 0x028
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* +------------------+------------------+
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* | rsi (Win32) | rsi (Linux) | rsp + 0x030
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* +------------------+------------------+
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* | rdi (Win32) | rdi (Linux) | rsp + 0x038
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* +------------------+------------------+
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* | r12 | r8 | rsp + 0x040
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* +------------------+------------------+
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* | r13 | r9 | rsp + 0x048
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* +------------------+------------------+
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* | r14 | r10 | rsp + 0x050
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* +------------------+------------------+
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* | r15 | r11 | rsp + 0x058
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* +------------------+------------------+
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* | xmm6 (Win32) | (unused) | rsp + 0x060
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* | | |
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* +------------------+------------------+
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* | xmm7 (Win32) | xmm1 | rsp + 0x070
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* | | |
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* +------------------+------------------+
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* | xmm8 (Win32) | xmm2 | rsp + 0x080
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* | | |
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* +------------------+------------------+
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* | xmm9 (Win32) | xmm3 | rsp + 0x090
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* | | |
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* +------------------+------------------+
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* | xmm10 (Win32) | xmm4 | rsp + 0x0A0
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* | | |
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* +------------------+------------------+
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* | xmm11 (Win32) | xmm5 | rsp + 0x0B0
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* | | |
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* +------------------+------------------+
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* | xmm12 (Win32) | (unused) | rsp + 0x0C0
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* | | |
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* +------------------+------------------+
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* | xmm13 (Win32) | (unused) | rsp + 0x0D0
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* | | |
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* +------------------+------------------+
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* | xmm14 (Win32) | (unused) | rsp + 0x0E0
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* | | |
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* +------------------+------------------+
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* | xmm15 (Win32) | (unused) | rsp + 0x0F0
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* | | |
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* +------------------+------------------+
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* | (return address) | (return address) | rsp + 0x100
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* +------------------+------------------+
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* | (rcx home) | (rcx home) | rsp + 0x108
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* +------------------+------------------+
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* | (rdx home) | (rdx home) | rsp + 0x110
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* +------------------+------------------+
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*/
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XEPACKEDSTRUCT(Thunk, {
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uint64_t arg_temp[3];
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uint64_t r[9];
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vec128_t xmm[10];
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});
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static_assert(sizeof(Thunk) % 16 == 0,
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"sizeof(Thunk) must be a multiple of 16!");
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static const size_t THUNK_STACK_SIZE = sizeof(Thunk) + 8;
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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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static const size_t GUEST_STACK_SIZE = 104;
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static const size_t GUEST_CTX_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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