Shuffling around thunk emitter.

Progress on #291.
2015-06-28 10:43:10 -07:00
parent 5e950cb066
commit 3745746fcc
8 changed files with 203 additions and 234 deletions
--- a/src/xenia/cpu/backend/x64/x64_stack_layout.h
+++ b/src/xenia/cpu/backend/x64/x64_stack_layout.h
@@ -0,0 +1,131 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_BACKEND_X64_X64_STACK_LAYOUT_H_
+#define XENIA_BACKEND_X64_X64_STACK_LAYOUT_H_
+
+#include "xenia/cpu/backend/x64/x64_backend.h"
+#include "xenia/cpu/backend/x64/x64_emitter.h"
+
+namespace xe {
+namespace cpu {
+namespace backend {
+namespace x64 {
+
+/**
+ * Stack Layout
+ * ----------------------------
+ * NOTE: stack must always be 16b aligned.
+ *
+ * Thunk stack:
+ *  +------------------+
+ *  | arg temp, 3 * 8  | rsp + 0
+ *  |                  |
+ *  |                  |
+ *  +------------------+
+ *  | scratch, 16b     | rsp + 32
+ *  |                  |
+ *  +------------------+
+ *  | rbx              | rsp + 48
+ *  +------------------+
+ *  | rcx / context    | rsp + 56
+ *  +------------------+
+ *  | rbp              | rsp + 64
+ *  +------------------+
+ *  | rsi              | rsp + 72
+ *  +------------------+
+ *  | rdi              | rsp + 80
+ *  +------------------+
+ *  | r12              | rsp + 88
+ *  +------------------+
+ *  | r13              | rsp + 96
+ *  +------------------+
+ *  | r14              | rsp + 104
+ *  +------------------+
+ *  | r15              | rsp + 112
+ *  +------------------+
+ *  | (return address) | rsp + 120
+ *  +------------------+
+ *  | (rcx home)       | rsp + 128
+ *  +------------------+
+ *  | (rdx home)       | rsp + 136
+ *  +------------------+
+ *
+ *
+ * TODO:
+ *  +------------------+
+ *  | xmm6             | rsp + 128
+ *  |                  |
+ *  +------------------+
+ *  | xmm7             | rsp + 144
+ *  |                  |
+ *  +------------------+
+ *  | xmm8             | rsp + 160
+ *  |                  |
+ *  +------------------+
+ *  | xmm9             | rsp + 176
+ *  |                  |
+ *  +------------------+
+ *  | xmm10            | rsp + 192
+ *  |                  |
+ *  +------------------+
+ *  | xmm11            | rsp + 208
+ *  |                  |
+ *  +------------------+
+ *  | xmm12            | rsp + 224
+ *  |                  |
+ *  +------------------+
+ *  | xmm13            | rsp + 240
+ *  |                  |
+ *  +------------------+
+ *  | xmm14            | rsp + 256
+ *  |                  |
+ *  +------------------+
+ *  | xmm15            | rsp + 272
+ *  |                  |
+ *  +------------------+
+ *
+ * Guest stack:
+ *  +------------------+
+ *  | arg temp, 3 * 8  | rsp + 0
+ *  |                  |
+ *  |                  |
+ *  +------------------+
+ *  | scratch, 48b     | rsp + 32
+ *  |                  |
+ *  +------------------+
+ *  | rcx / context    | rsp + 80
+ *  +------------------+
+ *  | guest ret addr   | rsp + 88
+ *  +------------------+
+ *  | call ret addr    | rsp + 96
+ *  +------------------+
+ *    ... locals ...
+ *  +------------------+
+ *  | (return address) |
+ *  +------------------+
+ *
+ */
+
+class StackLayout {
+ public:
+  const static size_t THUNK_STACK_SIZE = 120;
+
+  const static size_t GUEST_STACK_SIZE = 104;
+  const static size_t GUEST_RCX_HOME = 80;
+  const static size_t GUEST_RET_ADDR = 88;
+  const static size_t GUEST_CALL_RET_ADDR = 96;
+};
+
+}  // namespace x64
+}  // namespace backend
+}  // namespace cpu
+}  // namespace xe
+
+#endif  // XENIA_BACKEND_X64_X64_STACK_LAYOUT_H_