ReactOS 0.4.15-dev-7654-g6bc40d3
asm.h
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1/*
2 * Inline assembly support
3 *
4 * Copyright 2019 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21#ifndef __WINE_WINE_ASM_H
22#define __WINE_WINE_ASM_H
23
24#if defined(__APPLE__) || (defined(_WIN32) && defined(__i386__))
25# define __ASM_NAME(name) "_" name
26#else
27# define __ASM_NAME(name) name
28#endif
29
30#if defined(_WIN32) && defined(__i386__)
31# define __ASM_STDCALL(name,args) __ASM_NAME(name) "@" #args
32#else
33# define __ASM_STDCALL(name,args) __ASM_NAME(name)
34#endif
35
36#if defined(__GCC_HAVE_DWARF2_CFI_ASM) || defined(__APPLE__)
37# define __ASM_CFI(str) str
38#else
39# define __ASM_CFI(str)
40#endif
41
42#ifdef __SEH__
43# define __ASM_SEH(str) str
44#else
45# define __ASM_SEH(str)
46#endif
47
48#ifdef _WIN32
49# define __ASM_FUNC_TYPE(name) ".def " name "; .scl 2; .type 32; .endef"
50#elif defined(__APPLE__)
51# define __ASM_FUNC_TYPE(name) ""
52#elif defined(__arm__) || defined(__arm64__)
53# define __ASM_FUNC_TYPE(name) ".type " name ",%function"
54#else
55# define __ASM_FUNC_TYPE(name) ".type " name ",@function"
56#endif
57
58/* ReactOS */
59#if defined(_MSC_VER)
60# define __ASM_DEFINE_FUNC(name,code)
61#elif defined(__GNUC__)
62# define __ASM_DEFINE_FUNC(name,code) \
63 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" \
64 __ASM_CFI(".cfi_startproc\n\t") code __ASM_CFI("\n\t.cfi_endproc") __ASM_SEH("\n\t.seh_endproc") );
65#else
66# define __ASM_DEFINE_FUNC(name,code) void __asm_dummy_##__LINE__(void) { \
67 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" \
68 __ASM_CFI(".cfi_startproc\n\t") code __ASM_CFI("\n\t.cfi_endproc") __ASM_SEH("\n\t.seh_endproc") ); }
69#endif
70
71#define __ASM_GLOBAL_FUNC(name,code) __ASM_DEFINE_FUNC(__ASM_NAME(#name),code)
72
73#define __ASM_STDCALL_FUNC(name,args,code) __ASM_DEFINE_FUNC(__ASM_STDCALL(#name,args),code)
74
75/* fastcall support */
76
77#if defined(__i386__) && !defined(_WIN32)
78
79# define DEFINE_FASTCALL1_WRAPPER(func) \
80 __ASM_STDCALL_FUNC( __fastcall_ ## func, 4, \
81 "popl %eax\n\t" \
82 "pushl %ecx\n\t" \
83 "pushl %eax\n\t" \
84 "jmp " __ASM_STDCALL(#func,4) )
85# define DEFINE_FASTCALL_WRAPPER(func,args) \
86 __ASM_STDCALL_FUNC( __fastcall_ ## func, args, \
87 "popl %eax\n\t" \
88 "pushl %edx\n\t" \
89 "pushl %ecx\n\t" \
90 "pushl %eax\n\t" \
91 "jmp " __ASM_STDCALL(#func,args) )
92
93#else /* __i386__ */
94
95# define DEFINE_FASTCALL1_WRAPPER(func) /* nothing */
96# define DEFINE_FASTCALL_WRAPPER(func,args) /* nothing */
97
98#endif /* __i386__ */
99
100/* thiscall support */
101
102#ifdef _MSC_VER
103#define __thiscall __stdcall
104#endif
105
106#if defined(__i386__) && !defined(__MINGW32__)
107
108# ifdef _MSC_VER
109
110#ifdef __REACTOS__
111# define DEFINE_THISCALL_WRAPPER(func,args) \
112 __declspec(naked) void __thiscall_##func(void) \
113 { \
114 __asm pop eax \
115 __asm push ecx \
116 __asm push eax \
117 __asm jmp func \
118 }
119#else
120# define DEFINE_THISCALL_WRAPPER(func,args) \
121 __declspec(naked) void __thiscall_##func(void) \
122 { __asm { \
123 pop eax \
124 push ecx \
125 push eax \
126 jmp func \
127 } }
128#endif
129# else /* _MSC_VER */
130# define DEFINE_THISCALL_WRAPPER(func,args) \
131 extern void __thiscall_ ## func(void); \
132 __ASM_STDCALL_FUNC( __thiscall_ ## func, args, \
133 "popl %eax\n\t" \
134 "pushl %ecx\n\t" \
135 "pushl %eax\n\t" \
136 "jmp " __ASM_STDCALL(#func,args) )
137# endif /* _MSC_VER */
138
139# define THISCALL(func) (void *)__thiscall_ ## func
140# define THISCALL_NAME(func) __ASM_NAME("__thiscall_" #func)
141
142#else /* __i386__ */
143
144# define DEFINE_THISCALL_WRAPPER(func,args) /* nothing */
145# define THISCALL(func) func
146# define THISCALL_NAME(func) __ASM_NAME(#func)
147
148#endif /* __i386__ */
149
150#endif /* __WINE_WINE_ASM_H */