/usr/include/vacall.h is in libffcall-dev 2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 1995-2017 Bruno Haible <bruno@clisp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _VACALL_H
#define _VACALL_H
#include <stddef.h>
#include "ffcall-version.h"
#include "ffcall-abi.h"
/* Determine whether the current ABI is LLP64
('long' = 32-bit, 'long long' = 'void*' = 64-bit). */
#if defined(__x86_64__) && (defined(_WIN32) || defined(__WIN32__)) && !defined(__CYGWIN__)
#define __VA_LLP64 1
#endif
/* Determine the alignment of a type at compile time.
*/
#if defined(__GNUC__) || defined(__IBM__ALIGNOF__)
#define __VA_alignof __alignof__
#elif defined(__cplusplus)
template <class type> struct __VA_alignof_helper { char __slot1; type __slot2; };
#define __VA_alignof(type) offsetof (__VA_alignof_helper<type>, __slot2)
#elif defined(__mips__) || defined(__mipsn32__) || defined(__mips64__) /* SGI compiler */
#define __VA_alignof __builtin_alignof
#else
#define __VA_offsetof(type,ident) ((unsigned long)&(((type*)0)->ident))
#define __VA_alignof(type) __VA_offsetof(struct { char __slot1; type __slot2; }, __slot2)
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* C builtin types.
*/
#if defined(__mipsn32__) || defined(__x86_64_x32__) || defined(__VA_LLP64)
typedef long long __vaword;
#else
typedef long __vaword;
#endif
enum __VAtype
{
__VAvoid,
__VAchar,
__VAschar,
__VAuchar,
__VAshort,
__VAushort,
__VAint,
__VAuint,
__VAlong,
__VAulong,
__VAlonglong,
__VAulonglong,
__VAfloat,
__VAdouble,
__VAvoidp,
__VAstruct
};
enum __VA_alist_flags
{
/* how to return structs */
/* There are basically 3 ways to return structs:
* a. The called function returns a pointer to static data. Not reentrant.
* Not supported any more.
* b. The caller passes the return structure address in a dedicated register
* or as a first (or last), invisible argument. The called function stores
* its result there.
* c. Like b, and the called function also returns the return structure
* address in the return value register. (This is not very distinguishable
* from b.)
* Independently of this,
* r. small structures (<= 4 or <= 8 bytes) may be returned in the return
* value register(s), or
* m. even small structures are passed in memory.
*/
/* gcc-2.6.3 employs the following strategy:
* - If PCC_STATIC_STRUCT_RETURN is defined in the machine description
* it uses method a, else method c.
* - If flag_pcc_struct_return is set (either by -fpcc-struct-return or if
* DEFAULT_PCC_STRUCT_RETURN is defined to 1 in the machine description)
* it uses method m, else (either by -freg-struct-return or if
* DEFAULT_PCC_STRUCT_RETURN is defined to 0 in the machine description)
* method r.
*/
__VA_SMALL_STRUCT_RETURN = 1<<1, /* r: special case for small structs */
__VA_GCC_STRUCT_RETURN = 1<<2, /* consider 8 byte structs as small */
#if defined(__sparc__) && !defined(__sparc64__)
__VA_SUNCC_STRUCT_RETURN = 1<<3,
__VA_SUNPROCC_STRUCT_RETURN = 1<<4,
#else
__VA_SUNCC_STRUCT_RETURN = 0,
__VA_SUNPROCC_STRUCT_RETURN = 0,
#endif
#if defined(__i386__)
__VA_MSVC_STRUCT_RETURN = 1<<4,
#endif
/* the default way to return structs */
/* This choice here is based on the assumption that the function you are
* going to call has been compiled with the same compiler you are using to
* include this file.
* If you want to call functions with another struct returning convention,
* just #define __VA_STRUCT_RETURN ...
* before or after #including <vacall.h>.
*/
#ifndef __VA_STRUCT_RETURN
__VA_STRUCT_RETURN =
#if defined(__sparc__) && !defined(__sparc64__) && defined(__sun) && (defined(__SUNPRO_C) || defined(__SUNPRO_CC)) /* SUNWspro cc or CC */
__VA_SUNPROCC_STRUCT_RETURN,
#else
#if (defined(__i386__) && (defined(_WIN32) || defined(__CYGWIN__) || (defined(__MACH__) && defined(__APPLE__)) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__))) || defined(__m68k__) || defined(__mipsn32__) || defined(__mips64__) || defined(__sparc64__) || defined(__hppa__) || defined(__hppa64__) || defined(__arm__) || defined(__armhf__) || defined(__arm64__) || defined(__powerpc64_elfv2__) || defined(__ia64__) || defined(__x86_64__)
__VA_SMALL_STRUCT_RETURN |
#endif
#if defined(__GNUC__) && !((defined(__mipsn32__) || defined(__mips64__)) && ((__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ > 3)))
__VA_GCC_STRUCT_RETURN |
#endif
#if defined(__i386__) && (defined(_WIN32) || defined(__WIN32__)) && !defined(__CYGWIN__) /* native Windows */
__VA_MSVC_STRUCT_RETURN |
#endif
0,
#endif
#endif
/* how to return floats */
#if defined(__m68k__) || (defined(__sparc__) && !defined(__sparc64__))
__VA_SUNCC_FLOAT_RETURN = 1<<5,
#endif
#if defined(__m68k__)
__VA_FREG_FLOAT_RETURN = 1<<6,
#endif
/* the default way to return floats */
/* This choice here is based on the assumption that the function you are
* going to call has been compiled with the same compiler you are using to
* include this file.
* If you want to call functions with another float returning convention,
* just #define __VA_FLOAT_RETURN ...
* before or after #including <vacall.h>.
*/
#ifndef __VA_FLOAT_RETURN
#if (defined(__m68k__) || (defined(__sparc__) && !defined(__sparc64__))) && !defined(__GNUC__) && defined(__sun) && !(defined(__SUNPRO_C) || defined(__SUNPRO_CC)) /* Sun cc or CC */
__VA_FLOAT_RETURN = __VA_SUNCC_FLOAT_RETURN,
#elif defined(__m68k__)
__VA_FLOAT_RETURN = __VA_FREG_FLOAT_RETURN,
#else
__VA_FLOAT_RETURN = 0,
#endif
#endif
/* how to pass structs */
#if defined(__mips__) || defined(__mipsn32__) || defined(__mips64__)
__VA_SGICC_STRUCT_ARGS = 1<<7,
#endif
#if defined(__powerpc__) || defined(__powerpc64__)
__VA_AIXCC_STRUCT_ARGS = 1<<7,
#endif
#if defined(__ia64__)
__VA_OLDGCC_STRUCT_ARGS = 1<<7,
#endif
/* the default way to pass structs */
/* This choice here is based on the assumption that the function you are
* going to call has been compiled with the same compiler you are using to
* include this file.
* If you want to call functions with another structs passing convention,
* just #define __VA_STRUCT_ARGS ...
* before or after #including <vacall.h>.
*/
#ifndef __VA_STRUCT_ARGS
#if (defined(__mips__) && !defined(__mipsn32__) && !defined(__mips64__)) && !defined(__GNUC__) /* SGI mips cc */
__VA_STRUCT_ARGS = __VA_SGICC_STRUCT_ARGS,
#else
#if (defined(__mipsn32__) || defined(__mips64__)) && (!defined(__GNUC__) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ > 3)) /* SGI mips cc or gcc >= 3.4 */
__VA_STRUCT_ARGS = __VA_SGICC_STRUCT_ARGS,
#else
#if defined(__powerpc__) && !defined(__powerpc64__) && defined(_AIX) && !defined(__GNUC__) /* AIX 32-bit cc, xlc */
__VA_STRUCT_ARGS = __VA_AIXCC_STRUCT_ARGS,
#else
#if defined(__powerpc64__) && defined(_AIX) /* AIX 64-bit cc, xlc, gcc */
__VA_STRUCT_ARGS = __VA_AIXCC_STRUCT_ARGS,
#else
#if defined(__ia64__) && !(defined(__GNUC__) && (__GNUC__ >= 3))
__VA_STRUCT_ARGS = __VA_OLDGCC_STRUCT_ARGS,
#else
__VA_STRUCT_ARGS = 0,
#endif
#endif
#endif
#endif
#endif
#endif
/* how to pass floats */
/* ANSI C compilers and GNU gcc pass floats as floats.
* K&R C compilers pass floats as doubles. We don't support them any more.
*/
#if defined(__powerpc64__)
__VA_AIXCC_FLOAT_ARGS = 1<<8, /* pass floats in the low 4 bytes of an 8-bytes word */
#endif
/* the default way to pass floats */
/* This choice here is based on the assumption that the function you are
* going to call has been compiled with the same compiler you are using to
* include this file.
* If you want to call functions with another float passing convention,
* just #define __VA_FLOAT_ARGS ...
* before or after #including <vacall.h>.
*/
#ifndef __VA_FLOAT_ARGS
#if defined(__powerpc64__) && defined(_AIX) && !defined(__GNUC__) /* AIX 64-bit xlc */
__VA_FLOAT_ARGS = __VA_AIXCC_FLOAT_ARGS,
#else
__VA_FLOAT_ARGS = 0,
#endif
#endif
/* how to pass and return small integer arguments */
__VA_ANSI_INTEGERS = 0, /* no promotions */
__VA_TRADITIONAL_INTEGERS = 0, /* promote [u]char, [u]short to [u]int */
/* Fortunately these two methods are compatible. Our macros work with both. */
/* stack cleanup policy */
__VA_CDECL_CLEANUP = 0, /* caller pops args after return */
__VA_STDCALL_CLEANUP = 1<<9, /* callee pops args before return */
/* currently only supported on __i386__ */
#ifndef __VA_CLEANUP
__VA_CLEANUP = __VA_CDECL_CLEANUP,
#endif
/* These are for internal use only */
#if defined(__i386__) || defined(__m68k__) || defined(__mipsn32__) || defined(__mips64__) || defined(__sparc64__) || defined(__alpha__) || defined(__hppa64__) || defined(__arm__) || defined(__armhf__) || defined(__arm64__) || defined(__powerpc__) || defined(__powerpc64__) || defined(__ia64__) || defined(__x86_64__) || (defined(__s390__) && !defined(__s390x__))
__VA_REGISTER_STRUCT_RETURN = 1<<10,
#endif
#if defined(__mipsn32__) || defined(__mips64__)
__VA_REGISTER_FLOATSTRUCT_RETURN = 1<<11,
__VA_REGISTER_DOUBLESTRUCT_RETURN = 1<<12,
#endif
__VA_flag_for_broken_compilers_that_dont_like_trailing_commas
};
/*
* Definition of the ‘va_alist’ type.
*/
struct vacall_alist;
typedef struct vacall_alist * va_alist;
/*
* Definition of the va_start_xxx macros.
*/
#define __VA_START_FLAGS \
__VA_STRUCT_RETURN | __VA_FLOAT_RETURN | __VA_STRUCT_ARGS | __VA_FLOAT_ARGS | __VA_CLEANUP
extern void vacall_start (va_alist /* LIST */, int /* RETTYPE */, int /* FLAGS */);
#define va_start_void(LIST) vacall_start(LIST,__VAvoid, __VA_START_FLAGS)
#define va_start_char(LIST) vacall_start(LIST,__VAchar, __VA_START_FLAGS)
#define va_start_schar(LIST) vacall_start(LIST,__VAschar, __VA_START_FLAGS)
#define va_start_uchar(LIST) vacall_start(LIST,__VAuchar, __VA_START_FLAGS)
#define va_start_short(LIST) vacall_start(LIST,__VAshort, __VA_START_FLAGS)
#define va_start_ushort(LIST) vacall_start(LIST,__VAushort, __VA_START_FLAGS)
#define va_start_int(LIST) vacall_start(LIST,__VAint, __VA_START_FLAGS)
#define va_start_uint(LIST) vacall_start(LIST,__VAuint, __VA_START_FLAGS)
#define va_start_long(LIST) vacall_start(LIST,__VAlong, __VA_START_FLAGS)
#define va_start_ulong(LIST) vacall_start(LIST,__VAulong, __VA_START_FLAGS)
#define va_start_longlong(LIST) vacall_start(LIST,__VAlonglong, __VA_START_FLAGS)
#define va_start_ulonglong(LIST) vacall_start(LIST,__VAulonglong,__VA_START_FLAGS)
#define va_start_float(LIST) vacall_start(LIST,__VAfloat, __VA_START_FLAGS)
#define va_start_double(LIST) vacall_start(LIST,__VAdouble, __VA_START_FLAGS)
#define va_start_ptr(LIST,TYPE) vacall_start(LIST,__VAvoidp, __VA_START_FLAGS)
/*
* va_start_struct: Preparing structure return.
*/
extern void vacall_start_struct (va_alist /* LIST */, size_t /* TYPE_SIZE */, size_t /* TYPE_ALIGN */, int /* TYPE_SPLITTABLE */, int /* FLAGS */);
#define va_start_struct(LIST,TYPE,TYPE_SPLITTABLE) \
_va_start_struct(LIST,sizeof(TYPE),__VA_alignof(TYPE),TYPE_SPLITTABLE)
/* _va_start_struct() is like va_start_struct(), except that you pass
* the type's size and alignment instead of the type itself.
* Undocumented, but used by GNU clisp.
*/
#define _va_start_struct(LIST,TYPE_SIZE,TYPE_ALIGN,TYPE_SPLITTABLE) \
vacall_start_struct(LIST,TYPE_SIZE,TYPE_ALIGN,TYPE_SPLITTABLE,__VA_START_FLAGS)
/*
* Definition of the va_arg_xxx macros.
*/
extern char vacall_arg_char (va_alist /* LIST */);
extern signed char vacall_arg_schar (va_alist /* LIST */);
extern unsigned char vacall_arg_uchar (va_alist /* LIST */);
extern short vacall_arg_short (va_alist /* LIST */);
extern unsigned short vacall_arg_ushort (va_alist /* LIST */);
extern int vacall_arg_int (va_alist /* LIST */);
extern unsigned int vacall_arg_uint (va_alist /* LIST */);
extern long vacall_arg_long (va_alist /* LIST */);
extern unsigned long vacall_arg_ulong (va_alist /* LIST */);
#define va_arg_char(LIST) vacall_arg_char(LIST)
#define va_arg_schar(LIST) vacall_arg_schar(LIST)
#define va_arg_uchar(LIST) vacall_arg_uchar(LIST)
#define va_arg_short(LIST) vacall_arg_short(LIST)
#define va_arg_ushort(LIST) vacall_arg_ushort(LIST)
#define va_arg_int(LIST) vacall_arg_int(LIST)
#define va_arg_uint(LIST) vacall_arg_uint(LIST)
#define va_arg_long(LIST) vacall_arg_long(LIST)
#define va_arg_ulong(LIST) vacall_arg_ulong(LIST)
extern long long vacall_arg_longlong (va_alist /* LIST */);
extern unsigned long long vacall_arg_ulonglong (va_alist /* LIST */);
#define va_arg_longlong(LIST) vacall_arg_longlong(LIST)
#define va_arg_ulonglong(LIST) vacall_arg_ulonglong(LIST)
/* Floating point arguments. */
extern float vacall_arg_float (va_alist /* LIST */);
extern double vacall_arg_double (va_alist /* LIST */);
#define va_arg_float(LIST) vacall_arg_float(LIST)
#define va_arg_double(LIST) vacall_arg_double(LIST)
/* Pointer arguments. */
extern void* vacall_arg_ptr (va_alist /* LIST */);
#define va_arg_ptr(LIST,TYPE) ((TYPE)vacall_arg_ptr(LIST))
/* Structure arguments. */
extern void* vacall_arg_struct (va_alist /* LIST */, size_t /* TYPE_SIZE */, size_t /* TYPE_ALIGN */);
#define va_arg_struct(LIST,TYPE) \
*(TYPE*)vacall_arg_struct(LIST,sizeof(TYPE),__VA_alignof(TYPE))
/* _va_arg_struct() is like va_arg_struct(), except that you pass the type's
* size and alignment instead of the type and get the value's address instead
* of the value itself.
* Undocumented, but used by GNU clisp.
*/
#define _va_arg_struct(LIST,TYPE_SIZE,TYPE_ALIGN) \
vacall_arg_struct(LIST,TYPE_SIZE,TYPE_ALIGN)
/*
* Definition of the va_return_xxx macros.
*/
extern void vacall_return_void (va_alist /* LIST */);
#define va_return_void(LIST) vacall_return_void(LIST)
extern void vacall_return_char (va_alist /* LIST */, char /* VAL */);
extern void vacall_return_schar (va_alist /* LIST */, signed char /* VAL */);
extern void vacall_return_uchar (va_alist /* LIST */, unsigned char /* VAL */);
extern void vacall_return_short (va_alist /* LIST */, short /* VAL */);
extern void vacall_return_ushort (va_alist /* LIST */, unsigned short /* VAL */);
extern void vacall_return_int (va_alist /* LIST */, int /* VAL */);
extern void vacall_return_uint (va_alist /* LIST */, unsigned int /* VAL */);
extern void vacall_return_long (va_alist /* LIST */, long /* VAL */);
extern void vacall_return_ulong (va_alist /* LIST */, unsigned long /* VAL */);
#define va_return_char(LIST,VAL) vacall_return_char(LIST,VAL)
#define va_return_schar(LIST,VAL) vacall_return_schar(LIST,VAL)
#define va_return_uchar(LIST,VAL) vacall_return_uchar(LIST,VAL)
#define va_return_short(LIST,VAL) vacall_return_short(LIST,VAL)
#define va_return_ushort(LIST,VAL) vacall_return_ushort(LIST,VAL)
#define va_return_int(LIST,VAL) vacall_return_int(LIST,VAL)
#define va_return_uint(LIST,VAL) vacall_return_uint(LIST,VAL)
#define va_return_long(LIST,VAL) vacall_return_long(LIST,VAL)
#define va_return_ulong(LIST,VAL) vacall_return_ulong(LIST,VAL)
extern void vacall_return_longlong (va_alist /* LIST */, long long /* VAL */);
extern void vacall_return_ulonglong (va_alist /* LIST */, unsigned long long /* VAL */);
#define va_return_longlong(LIST,VAL) vacall_return_longlong(LIST,VAL)
#define va_return_ulonglong(LIST,VAL) vacall_return_ulonglong(LIST,VAL)
extern void vacall_return_float (va_alist /* LIST */, float /* VAL */);
extern void vacall_return_double (va_alist /* LIST */, double /* VAL */);
#define va_return_float(LIST,VAL) vacall_return_float(LIST,VAL)
#define va_return_double(LIST,VAL) vacall_return_double(LIST,VAL)
extern void vacall_return_ptr (va_alist /* LIST */, void* /* VAL */);
#define va_return_ptr(LIST,TYPE,VAL) vacall_return_ptr(LIST,(void*)(TYPE)(VAL))
extern void vacall_return_struct (va_alist /* LIST */, size_t /* TYPE_SIZE */, size_t /* TYPE_ALIGN */, const void* /* VAL_ADDR */);
#define va_return_struct(LIST,TYPE,VAL) \
_va_return_struct(LIST,sizeof(TYPE),__VA_alignof(TYPE),&(VAL))
/* Undocumented, but used by GNU clisp. */
#define _va_return_struct(LIST,TYPE_SIZE,TYPE_ALIGN,VAL_ADDR) \
vacall_return_struct(LIST,TYPE_SIZE,TYPE_ALIGN,VAL_ADDR)
/* Determine whether a struct type is word-splittable, i.e. whether each of
* its components fit into a register.
* The entire computation is done at compile time.
*/
#define va_word_splittable_1(slot1) \
(__va_offset1(slot1)/sizeof(__vaword) == (__va_offset1(slot1)+sizeof(slot1)-1)/sizeof(__vaword))
#define va_word_splittable_2(slot1,slot2) \
((__va_offset1(slot1)/sizeof(__vaword) == (__va_offset1(slot1)+sizeof(slot1)-1)/sizeof(__vaword)) \
&& (__va_offset2(slot1,slot2)/sizeof(__vaword) == (__va_offset2(slot1,slot2)+sizeof(slot2)-1)/sizeof(__vaword)) \
)
#define va_word_splittable_3(slot1,slot2,slot3) \
((__va_offset1(slot1)/sizeof(__vaword) == (__va_offset1(slot1)+sizeof(slot1)-1)/sizeof(__vaword)) \
&& (__va_offset2(slot1,slot2)/sizeof(__vaword) == (__va_offset2(slot1,slot2)+sizeof(slot2)-1)/sizeof(__vaword)) \
&& (__va_offset3(slot1,slot2,slot3)/sizeof(__vaword) == (__va_offset3(slot1,slot2,slot3)+sizeof(slot3)-1)/sizeof(__vaword)) \
)
#define va_word_splittable_4(slot1,slot2,slot3,slot4) \
((__va_offset1(slot1)/sizeof(__vaword) == (__va_offset1(slot1)+sizeof(slot1)-1)/sizeof(__vaword)) \
&& (__va_offset2(slot1,slot2)/sizeof(__vaword) == (__va_offset2(slot1,slot2)+sizeof(slot2)-1)/sizeof(__vaword)) \
&& (__va_offset3(slot1,slot2,slot3)/sizeof(__vaword) == (__va_offset3(slot1,slot2,slot3)+sizeof(slot3)-1)/sizeof(__vaword)) \
&& (__va_offset4(slot1,slot2,slot3,slot4)/sizeof(__vaword) == (__va_offset4(slot1,slot2,slot3,slot4)+sizeof(slot4)-1)/sizeof(__vaword)) \
)
#define __va_offset1(slot1) \
0
#define __va_offset2(slot1,slot2) \
((__va_offset1(slot1)+sizeof(slot1)+__VA_alignof(slot2)-1) & -(long)__VA_alignof(slot2))
#define __va_offset3(slot1,slot2,slot3) \
((__va_offset2(slot1,slot2)+sizeof(slot2)+__VA_alignof(slot3)-1) & -(long)__VA_alignof(slot3))
#define __va_offset4(slot1,slot2,slot3,slot4) \
((__va_offset3(slot1,slot2,slot3)+sizeof(slot3)+__VA_alignof(slot4)-1) & -(long)__VA_alignof(slot4))
/*
* Miscellaneous declarations.
*/
#ifdef __cplusplus
extern "C" void (*vacall) (); /* the return type is variable, not void! */
#else
extern void (*vacall) (); /* the return type is variable, not void! */
#endif
extern void (* vacall_function) (va_alist);
#ifdef __cplusplus
}
#endif
#endif /* _VACALL_H */
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