[INCLUDE/WINE] Import asm.h from Wine Staging 4.18. CORE-16441

sdk/include/reactos/wine/asm.h

@@ -0,0 +1,146 @@
+/*
+ * Inline assembly support
+ *
+ * Copyright 2019 Alexandre Julliard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __WINE_WINE_ASM_H
+#define __WINE_WINE_ASM_H
+
+#if defined(__APPLE__) || (defined(_WIN32) && defined(__i386__))
+# define __ASM_NAME(name) "_" name
+#else
+# define __ASM_NAME(name) name
+#endif
+
+#if defined(_WIN32) && defined(__i386__)
+# define __ASM_STDCALL(name,args) __ASM_NAME(name) "@" #args
+#else
+# define __ASM_STDCALL(name,args) __ASM_NAME(name)
+#endif
+
+#if defined(__GCC_HAVE_DWARF2_CFI_ASM) || defined(__APPLE__)
+# define __ASM_CFI(str) str
+#else
+# define __ASM_CFI(str)
+#endif
+
+#ifdef __SEH__
+# define __ASM_SEH(str) str
+#else
+# define __ASM_SEH(str)
+#endif
+
+#ifdef _WIN32
+# define __ASM_FUNC_TYPE(name) ".def " name "; .scl 2; .type 32; .endef"
+#elif defined(__APPLE__)
+# define __ASM_FUNC_TYPE(name) ""
+#elif defined(__arm__) || defined(__arm64__)
+# define __ASM_FUNC_TYPE(name) ".type " name ",%function"
+#else
+# define __ASM_FUNC_TYPE(name) ".type " name ",@function"
+#endif
+
+/* ReactOS */
+#if defined(_MSC_VER)
+# define __ASM_DEFINE_FUNC(name,code)
+#elif defined(__GNUC__)
+# define __ASM_DEFINE_FUNC(name,code) \
+    asm(".text\n\t.align 4\n\t.globl " name "\n\t" __ASM_FUNC_TYPE(name) __ASM_SEH("\n\t.seh_proc " name) "\n" name ":\n\t" \
+        __ASM_CFI(".cfi_startproc\n\t") code __ASM_CFI("\n\t.cfi_endproc") __ASM_SEH("\n\t.seh_endproc") );
+#else
+# define __ASM_DEFINE_FUNC(name,code) void __asm_dummy_##__LINE__(void) { \
+    asm(".text\n\t.align 4\n\t.globl " name "\n\t" __ASM_FUNC_TYPE(name) __ASM_SEH("\n\t.seh_proc " name) "\n" name ":\n\t" \
+        __ASM_CFI(".cfi_startproc\n\t") code __ASM_CFI("\n\t.cfi_endproc") __ASM_SEH("\n\t.seh_endproc") ); }
+#endif
+
+#define __ASM_GLOBAL_FUNC(name,code) __ASM_DEFINE_FUNC(__ASM_NAME(#name),code)
+
+#define __ASM_STDCALL_FUNC(name,args,code) __ASM_DEFINE_FUNC(__ASM_STDCALL(#name,args),code)
+
+/* fastcall support */
+
+#if defined(__i386__) && !defined(_WIN32)
+
+# define DEFINE_FASTCALL1_WRAPPER(func) \
+    __ASM_STDCALL_FUNC( __fastcall_ ## func, 4, \
+                        "popl %eax\n\t"  \
+                        "pushl %ecx\n\t" \
+                        "pushl %eax\n\t" \
+                        "jmp " __ASM_STDCALL(#func,4) )
+# define DEFINE_FASTCALL_WRAPPER(func,args) \
+    __ASM_STDCALL_FUNC( __fastcall_ ## func, args, \
+                        "popl %eax\n\t"  \
+                        "pushl %edx\n\t" \
+                        "pushl %ecx\n\t" \
+                        "pushl %eax\n\t" \
+                        "jmp " __ASM_STDCALL(#func,args) )
+
+#else  /* __i386__ */
+
+# define DEFINE_FASTCALL1_WRAPPER(func) /* nothing */
+# define DEFINE_FASTCALL_WRAPPER(func,args) /* nothing */
+
+#endif  /* __i386__ */
+
+/* thiscall support */
+
+#if defined(__i386__) && !defined(__MINGW32__)
+
+# ifdef _MSC_VER
+
+#ifdef __REACTOS__
+#  define DEFINE_THISCALL_WRAPPER(func,args) \
+    __declspec(naked) void __thiscall_##func(void) \
+    { \
+        __asm pop eax \
+        __asm push ecx \
+        __asm push eax \
+        __asm jmp func \
+    }
+#else
+#  define DEFINE_THISCALL_WRAPPER(func,args) \
+    __declspec(naked) void __thiscall_##func(void) \
+    { __asm { \
+        pop eax \
+        push ecx \
+        push eax \
+        jmp func \
+    } }
+#endif
+# else  /* _MSC_VER */
+#  define DEFINE_THISCALL_WRAPPER(func,args) \
+    extern void __thiscall_ ## func(void);  \
+    __ASM_STDCALL_FUNC( __thiscall_ ## func, args, \
+                       "popl %eax\n\t"  \
+                       "pushl %ecx\n\t" \
+                       "pushl %eax\n\t" \
+                        "jmp " __ASM_STDCALL(#func,args) )
+# endif  /* _MSC_VER */
+
+# define THISCALL(func) (void *)__thiscall_ ## func
+# define THISCALL_NAME(func) __ASM_NAME("__thiscall_" #func)
+
+#else  /* __i386__ */
+
+# define DEFINE_THISCALL_WRAPPER(func,args) /* nothing */
+# define THISCALL(func) func
+# define THISCALL_NAME(func) __ASM_NAME(#func)
+
+#endif  /* __i386__ */
+
+#endif  /* __WINE_WINE_ASM_H */