Sweden-Number/include/wine/asm.h

183 lines
6.1 KiB
C

/*
* 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) "_" name "@" #args
# define __ASM_FASTCALL(name,args) "@" name "@" #args
#else
# define __ASM_STDCALL(name,args) __ASM_NAME(name)
# define __ASM_FASTCALL(name,args) __ASM_NAME("__fastcall_" name)
#endif
#if defined(__GCC_HAVE_DWARF2_CFI_ASM) || (defined(__clang__) && defined(__GNUC__) && !defined(__SEH__))
# define __ASM_CFI(str) str
#else
# define __ASM_CFI(str)
#endif
#if defined(__SEH__) || (defined(_MSC_VER) && defined(__clang__) && (defined(__x86_64__) || defined(__aarch64__)))
# if defined(__aarch64__) && defined(__clang_major__) && (__clang_major__ < 12 || defined(__apple_build_version__))
/* Clang got support for aarch64 SEH assembly directives in Clang 12,
* before that, only .seh_startproc/.seh_endproc but nothing else was
* supported. Support for it doesn't exist in any Apple branded version
* of Clang yet. */
# define __ASM_SEH(str)
# else
# define __ASM_SEH(str) str
# endif
#else
# define __ASM_SEH(str)
#endif
#ifdef _WIN32
# define __ASM_FUNC_TYPE(name) ".def " name "\n\t.scl 2\n\t.type 32\n\t.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
#ifdef _WIN32
# define __ASM_FUNC_SIZE(name) ""
#elif defined(__APPLE__)
# define __ASM_FUNC_SIZE(name) ""
#else
# define __ASM_FUNC_SIZE(name) "\n\t.size " name ",.-" name
#endif
#if !defined(__GNUC__) && !defined(__clang__)
# define __ASM_BLOCK_BEGIN(name) void __asm_dummy_##name(void) {
# define __ASM_BLOCK_END }
#else
# define __ASM_BLOCK_BEGIN(name)
# define __ASM_BLOCK_END
#endif
#define __ASM_DEFINE_FUNC(name,code) \
__ASM_BLOCK_BEGIN(__LINE__) \
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") __ASM_FUNC_SIZE(name)); \
__ASM_BLOCK_END
#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)
#define __ASM_FASTCALL_FUNC(name,args,code) __ASM_DEFINE_FUNC(__ASM_FASTCALL(#name,args),code)
/* import variables */
#ifdef _WIN64
#define __ASM_DEFINE_IMPORT(name) \
__ASM_BLOCK_BEGIN(__LINE__) \
asm(".data\n\t.balign 8\n\t.globl __imp_" name "\n__imp_" name ":\n\t.quad " name "\n\t.text"); \
__ASM_BLOCK_END
#else
#define __ASM_DEFINE_IMPORT(name) \
__ASM_BLOCK_BEGIN(__LINE__) \
asm(".data\n\t.balign 4\n\t.globl __imp_" name "\n__imp_" name ":\n\t.long " name "\n\t.text"); \
__ASM_BLOCK_END
#endif
#ifdef _WIN32
#define __ASM_GLOBAL_IMPORT(name) __ASM_DEFINE_IMPORT(__ASM_NAME(#name))
#define __ASM_STDCALL_IMPORT(name,args) __ASM_DEFINE_IMPORT(__ASM_STDCALL(#name,args))
#else
#define __ASM_GLOBAL_IMPORT(name) /* nothing */
#define __ASM_STDCALL_IMPORT(name,args) /* nothing */
#endif
/* fastcall support */
#if defined(__i386__) && !defined(_WIN32)
# define DEFINE_FASTCALL1_WRAPPER(func) \
__ASM_FASTCALL_FUNC( 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_FASTCALL_FUNC( 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__) && (!defined(_MSC_VER) || !defined(__clang__))
#define __ASM_USE_THISCALL_WRAPPER
# ifdef _MSC_VER
# define DEFINE_THISCALL_WRAPPER(func,args) \
__declspec(naked) void __thiscall_##func(void) \
{ __asm { \
pop eax \
push ecx \
push eax \
jmp func \
} }
# 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__ */
#if defined(__GNUC__) && !defined(_WIN32) && !defined(__APPLE__) && !defined(__ANDROID__)
#define __ASM_OBSOLETE(func) __asm__( ".symver " #func "_obsolete," #func "@WINE_1.0" )
#else
#undef __ASM_OBSOLETE
#endif
#endif /* __WINE_WINE_ASM_H */