186 lines
6.3 KiB
C
186 lines
6.3 KiB
C
/*
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* Inline assembly support
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*
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* Copyright 2019 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __WINE_WINE_ASM_H
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#define __WINE_WINE_ASM_H
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#if defined(__APPLE__) || (defined(__WINE_PE_BUILD) && defined(__i386__))
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# define __ASM_NAME(name) "_" name
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#else
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# define __ASM_NAME(name) name
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#endif
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#if defined(__WINE_PE_BUILD) && defined(__i386__)
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# define __ASM_STDCALL(name,args) "_" name "@" #args
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# define __ASM_FASTCALL(name,args) "@" name "@" #args
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#else
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# define __ASM_STDCALL(name,args) __ASM_NAME(name)
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# define __ASM_FASTCALL(name,args) __ASM_NAME("__fastcall_" name)
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#endif
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#if defined(__GCC_HAVE_DWARF2_CFI_ASM) || (defined(__clang__) && defined(__GNUC__) && !defined(__SEH__))
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# define __ASM_CFI(str) str
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#else
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# define __ASM_CFI(str)
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#endif
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#if defined(__SEH__) || (defined(_MSC_VER) && defined(__clang__) && (defined(__x86_64__) || defined(__aarch64__)))
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# if defined(__aarch64__) && defined(__clang_major__) && (__clang_major__ < 12 || defined(__apple_build_version__))
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/* Clang got support for aarch64 SEH assembly directives in Clang 12,
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* before that, only .seh_startproc/.seh_endproc but nothing else was
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* supported. Support for it doesn't exist in any Apple branded version
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* of Clang yet. */
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# define __ASM_SEH(str)
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# else
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# define __ASM_SEH(str) str
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# endif
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#else
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# define __ASM_SEH(str)
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#endif
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#ifdef __WINE_PE_BUILD
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# define __ASM_FUNC_TYPE(name) ".def " name "\n\t.scl 2\n\t.type 32\n\t.endef"
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#elif defined(__APPLE__)
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# define __ASM_FUNC_TYPE(name) ""
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#elif defined(__arm__) && defined(__thumb__)
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# define __ASM_FUNC_TYPE(name) ".type " name ",%function\n\t.thumb_func"
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#elif defined(__arm__) || defined(__aarch64__)
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# define __ASM_FUNC_TYPE(name) ".type " name ",%function"
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#else
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# define __ASM_FUNC_TYPE(name) ".type " name ",@function"
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#endif
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#ifdef __WINE_PE_BUILD
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# define __ASM_FUNC_SIZE(name) ""
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#elif defined(__APPLE__)
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# define __ASM_FUNC_SIZE(name) ""
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#else
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# define __ASM_FUNC_SIZE(name) "\n\t.size " name ",.-" name
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#endif
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#if !defined(__GNUC__) && !defined(__clang__)
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# define __ASM_BLOCK_BEGIN(name) void __asm_dummy_##name(void) {
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# define __ASM_BLOCK_END }
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#else
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# define __ASM_BLOCK_BEGIN(name)
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# define __ASM_BLOCK_END
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#endif
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#define __ASM_DEFINE_FUNC(name,code) \
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__ASM_BLOCK_BEGIN(__LINE__) \
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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" \
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__ASM_CFI(".cfi_startproc\n\t") code __ASM_CFI("\n\t.cfi_endproc") __ASM_SEH("\n\t.seh_endproc") __ASM_FUNC_SIZE(name)); \
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__ASM_BLOCK_END
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#define __ASM_GLOBAL_FUNC(name,code) __ASM_DEFINE_FUNC(__ASM_NAME(#name),code)
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#define __ASM_STDCALL_FUNC(name,args,code) __ASM_DEFINE_FUNC(__ASM_STDCALL(#name,args),code)
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#define __ASM_FASTCALL_FUNC(name,args,code) __ASM_DEFINE_FUNC(__ASM_FASTCALL(#name,args),code)
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/* import variables */
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#ifdef _WIN64
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#define __ASM_DEFINE_IMPORT(name) \
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__ASM_BLOCK_BEGIN(__LINE__) \
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asm(".data\n\t.balign 8\n\t.globl __imp_" name "\n__imp_" name ":\n\t.quad " name "\n\t.text"); \
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__ASM_BLOCK_END
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#else
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#define __ASM_DEFINE_IMPORT(name) \
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__ASM_BLOCK_BEGIN(__LINE__) \
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asm(".data\n\t.balign 4\n\t.globl __imp_" name "\n__imp_" name ":\n\t.long " name "\n\t.text"); \
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__ASM_BLOCK_END
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#endif
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#ifdef __WINE_PE_BUILD
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#define __ASM_GLOBAL_IMPORT(name) __ASM_DEFINE_IMPORT(__ASM_NAME(#name))
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#define __ASM_STDCALL_IMPORT(name,args) __ASM_DEFINE_IMPORT(__ASM_STDCALL(#name,args))
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#else
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#define __ASM_GLOBAL_IMPORT(name) /* nothing */
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#define __ASM_STDCALL_IMPORT(name,args) /* nothing */
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#endif
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/* fastcall support */
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#if defined(__i386__) && !defined(__WINE_PE_BUILD)
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# define __ASM_USE_FASTCALL_WRAPPER
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# define DEFINE_FASTCALL1_WRAPPER(func) \
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__ASM_FASTCALL_FUNC( func, 4, \
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"popl %eax\n\t" \
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"pushl %ecx\n\t" \
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"pushl %eax\n\t" \
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"jmp " __ASM_STDCALL(#func,4) )
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# define DEFINE_FASTCALL_WRAPPER(func,args) \
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__ASM_FASTCALL_FUNC( func, args, \
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"popl %eax\n\t" \
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"pushl %edx\n\t" \
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"pushl %ecx\n\t" \
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"pushl %eax\n\t" \
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"jmp " __ASM_STDCALL(#func,args) )
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#else /* __i386__ */
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# define DEFINE_FASTCALL1_WRAPPER(func) /* nothing */
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# define DEFINE_FASTCALL_WRAPPER(func,args) /* nothing */
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#endif /* __i386__ */
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/* thiscall support */
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#if defined(__i386__) && !defined(__MINGW32__) && (!defined(_MSC_VER) || !defined(__clang__))
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# define __ASM_USE_THISCALL_WRAPPER
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# ifdef _MSC_VER
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# define DEFINE_THISCALL_WRAPPER(func,args) \
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__declspec(naked) void __thiscall_##func(void) \
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{ __asm { \
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pop eax \
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push ecx \
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push eax \
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jmp func \
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} }
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# else /* _MSC_VER */
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# define DEFINE_THISCALL_WRAPPER(func,args) \
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extern void __thiscall_ ## func(void); \
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__ASM_STDCALL_FUNC( __thiscall_ ## func, args, \
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"popl %eax\n\t" \
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"pushl %ecx\n\t" \
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"pushl %eax\n\t" \
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"jmp " __ASM_STDCALL(#func,args) )
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# endif /* _MSC_VER */
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# define THISCALL(func) (void *)__thiscall_ ## func
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# define THISCALL_NAME(func) __ASM_NAME("__thiscall_" #func)
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#else /* __i386__ */
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# define DEFINE_THISCALL_WRAPPER(func,args) /* nothing */
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# define THISCALL(func) func
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# define THISCALL_NAME(func) __ASM_NAME(#func)
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#endif /* __i386__ */
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#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && !defined(__WINE_PE_BUILD) && !defined(__APPLE__) && !defined(__ANDROID__)
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#define __ASM_OBSOLETE(func) __asm__( ".symver " #func "_obsolete," #func "@WINE_1.0" )
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#else
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#undef __ASM_OBSOLETE
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#endif
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#endif /* __WINE_WINE_ASM_H */
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