drc: starting arm64 support

[pcsx_rearmed.git] / libpcsxcore / new_dynarec / assem_arm64.h

diff --git a/libpcsxcore/new_dynarec/assem_arm64.h b/libpcsxcore/new_dynarec/assem_arm64.h
new file mode 100644 (file)
index 0000000..8ba17ed
--- /dev/null
+++ b/libpcsxcore/new_dynarec/assem_arm64.h
@@ -0,0 +1,46 @@
+#define HOST_REGS 29
+#define HOST_BTREG 27
+#define EXCLUDE_REG -1
+
+#define HOST_IMM8 1
+#define HAVE_CMOV_IMM 1
+#define RAM_SIZE 0x200000
+
+//#define REG_SHIFT 2
+
+/* calling convention:
+   r0 -r17: caller-save
+   r19-r29: callee-save */
+
+#define ARG1_REG 0
+#define ARG2_REG 1
+#define ARG3_REG 2
+#define ARG4_REG 3
+
+#define LR 30
+#define HOST_TEMPREG LR
+
+// Note: FP is set to &dynarec_local when executing generated code.
+// Thus the local variables are actually global and not on the stack.
+#define FP 29
+#define rFP x29
+
+#define HOST_CCREG 28
+#define rCC w28
+
+#ifndef __ASSEMBLER__
+
+extern char *invc_ptr;
+
+#define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
+
+// Code generator target address
+#if defined(BASE_ADDR_DYNAMIC)
+  // for platforms that can't just use .bss buffer (are there any on arm64?)
+  extern u_char *translation_cache;
+#else
+  // using a static buffer in .bss
+  extern u_char translation_cache[1 << TARGET_SIZE_2];
+#endif
+
+#endif // !__ASSEMBLY__