From a0de230f73ee22f47fb6c99fe199d9ed3d266672 Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Wed, 19 Nov 2008 21:24:52 +0000
Subject: [PATCH] Some asm macros for x64. They allow creating unwind info in a
 MASM like way, As a general rule for all asm functions changing the stack
 pointer, use ".proc FunctionName" (without '_' prefix) before the function
 and ".endproc" after the function and use .allocstack, .pushreg, etc. after
 the corresponding opcode.

svn path=/branches/ros-amd64-bringup/; revision=37469
---
 .../include/internal/amd64/asmmacro.S         | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 reactos/ntoskrnl/include/internal/amd64/asmmacro.S

diff --git a/reactos/ntoskrnl/include/internal/amd64/asmmacro.S b/reactos/ntoskrnl/include/internal/amd64/asmmacro.S
new file mode 100644
index 00000000000..9d7a1807321
--- /dev/null
+++ b/reactos/ntoskrnl/include/internal/amd64/asmmacro.S
@@ -0,0 +1,81 @@
+/*
+ * COPYRIGHT:       See COPYING in the top level directory
+ * PROJECT:         ReactOS Kernel
+ * FILE:            ntoskrnl/include/amd64/asmmacro.S
+ * PURPOSE:         Macros for x64 assembly
+ * PROGRAMMERS:     Timo Kreuzer (timo.kreuzer@reactos.org)
+ */
+
+.intel_syntax noprefix
+.code64
+
+/* Macros for x64 stack unwind OPs */
+
+.macro .proc name
+    .func name
+    .global _\name
+    _\name:
+    .cfi_startproc
+    .equ cfa_current_offset, -8
+.endm
+
+.macro .endproc
+    .cfi_endproc
+    .endfunc
+.endm
+
+.macro .allocstack size
+    .cfi_adjust_cfa_offset \size
+    .set cfa_current_offset, cfa_current_offset - \size
+.endm
+
+.macro .pushframe code
+    .if (\code == 0)
+        .cfi_adjust_cfa_offset 0x28
+        .set cfa_current_offset, cfa_current_offset - 0x28
+    .else
+        .cfi_adjust_cfa_offset 0x30
+        .set cfa_current_offset, cfa_current_offset - 0x30
+    .endif
+.endm
+
+.macro .pushreg reg
+    .cfi_adjust_cfa_offset 8
+    .equ cfa_current_offset, cfa_current_offset - 8
+    .cfi_offset \reg, cfa_current_offset
+.endm
+
+.macro .savereg reg, offset
+    // checkme!!!
+    .cfi_offset \reg, \offset
+.endm
+
+.macro .savexmm128 reg, offset
+    // checkme!!!
+    .cfi_offset \reg, \offset
+.endm
+
+.macro .setframe reg, offset
+    .cfi_def_cfa reg, \offset
+    .equ cfa_current_offset, \offset
+.endm
+
+.macro .endprolog
+.endm
+
+.macro UNIMPLEMENTED2 line, func
+    jmp 3f
+    .equ expr, 12
+1:  .asciz "\func"
+2:  .asciz __FILE__
+3:
+    sub rsp, 0x20
+    lea rcx, _MsgUnimplemented[rip]
+    lea rdx, 1b[rip]
+    lea r8, 2b[rip]
+    mov r9, \line
+    call _DbgPrint
+    add rsp, 0x20
+.endm
+#define UNIMPLEMENTED UNIMPLEMENTED2 __LINE__,
+