From 3787bab1f69ae22d3e8106d70598ce923e5efe70 Mon Sep 17 00:00:00 2001
From: RSDuck <rsduck@users.noreply.github.com>
Date: Sat, 25 Apr 2020 13:40:51 +0200
Subject: implement block linking + some refactoring currently only supported
 for x64

---
 src/ARMJIT_x64/ARMJIT_Linkage.s | 74 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 src/ARMJIT_x64/ARMJIT_Linkage.s

(limited to 'src/ARMJIT_x64/ARMJIT_Linkage.s')

diff --git a/src/ARMJIT_x64/ARMJIT_Linkage.s b/src/ARMJIT_x64/ARMJIT_Linkage.s
new file mode 100644
index 0000000..dbbb024
--- /dev/null
+++ b/src/ARMJIT_x64/ARMJIT_Linkage.s
@@ -0,0 +1,74 @@
+.intel_syntax noprefix
+
+#include "ARMJIT_Offsets.h"
+
+.text
+
+#define RCPU rbp
+#define RCPSR r15d
+
+#ifdef WIN64
+#define ARG1_REG ecx
+#define ARG2_REG edx
+#define ARG3_REG r8d
+#define ARG4_REG r9d
+#define ARG1_REG64 rcx
+#define ARG2_REG64 rdx
+#define ARG3_REG64 r8
+#define ARG4_REG64 r9
+#else
+#define ARG1_REG edi
+#define ARG2_REG esi
+#define ARG3_REG edx
+#define ARG4_REG ecx
+#define ARG1_REG64 rdi
+#define ARG2_REG64 rsi
+#define ARG3_REG64 rdx
+#define ARG4_REG64 rcx
+#endif
+
+.p2align 4,,15
+
+.global ARM_Dispatch
+ARM_Dispatch:
+#ifdef WIN64
+    push rdi
+    push rsi
+#endif
+    push rbx
+    push r12
+    push r13
+    push r14
+    push r15
+    push rbp
+
+#ifdef WIN64
+    sub rsp, 0x28
+#endif
+    mov RCPU, ARG1_REG64
+    mov RCPSR, [RCPU + ARM_CPSR_offset]
+
+    jmp ARG2_REG64
+
+.p2align 4,,15
+
+.global ARM_Ret
+ARM_Ret:
+    mov [RCPU + ARM_CPSR_offset], RCPSR
+
+#ifdef WIN64
+    add rsp, 0x28
+#endif
+
+    pop rbp
+    pop r15
+    pop r14
+    pop r13
+    pop r12
+    pop rbx
+#ifdef WIN64
+    pop rsi
+    pop rdi
+#endif
+
+    ret
-- 
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