The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/link.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/link.h

     1	/* Copyright (C) 2004-2024 Free Software Foundation, Inc.
     2	   This file is part of the GNU C Library.
     3	
     4	   The GNU C Library is free software; you can redistribute it and/or
     5	   modify it under the terms of the GNU Lesser General Public
     6	   License as published by the Free Software Foundation; either
     7	   version 2.1 of the License, or (at your option) any later version.
     8	
     9	   The GNU C Library is distributed in the hope that it will be useful,
    10	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    11	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12	   Lesser General Public License for more details.
    13	
    14	   You should have received a copy of the GNU Lesser General Public
    15	   License along with the GNU C Library; if not, see
    16	   <https://www.gnu.org/licenses/>.  */
    17	
    18	#ifndef	_LINK_H
    19	# error "Never include <bits/link.h> directly; use <link.h> instead."
    20	#endif
    21	
    22	
    23	#ifndef __x86_64__
    24	/* Registers for entry into PLT on IA-32.  */
    25	typedef struct La_i86_regs
    26	{
    27	  uint32_t lr_edx;
    28	  uint32_t lr_ecx;
    29	  uint32_t lr_eax;
    30	  uint32_t lr_ebp;
    31	  uint32_t lr_esp;
    32	} La_i86_regs;
    33	
    34	/* Return values for calls from PLT on IA-32.  */
    35	typedef struct La_i86_retval
    36	{
    37	  uint32_t lrv_eax;
    38	  uint32_t lrv_edx;
    39	  long double lrv_st0;
    40	  long double lrv_st1;
    41	  uint64_t __glibc_unused1;
    42	  uint64_t __glibc_unused2;
    43	} La_i86_retval;
    44	
    45	
    46	__BEGIN_DECLS
    47	
    48	extern Elf32_Addr la_i86_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx,
    49					       uintptr_t *__refcook,
    50					       uintptr_t *__defcook,
    51					       La_i86_regs *__regs,
    52					       unsigned int *__flags,
    53					       const char *__symname,
    54					       long int *__framesizep);
    55	extern unsigned int la_i86_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx,
    56						uintptr_t *__refcook,
    57						uintptr_t *__defcook,
    58						const La_i86_regs *__inregs,
    59						La_i86_retval *__outregs,
    60						const char *symname);
    61	
    62	__END_DECLS
    63	
    64	#else
    65	
    66	/* Registers for entry into PLT on x86-64.  */
    67	# if __GNUC_PREREQ (4,0)
    68	typedef float La_x86_64_xmm __attribute__ ((__vector_size__ (16)));
    69	typedef float La_x86_64_ymm
    70	    __attribute__ ((__vector_size__ (32), __aligned__ (16)));
    71	typedef double La_x86_64_zmm
    72	    __attribute__ ((__vector_size__ (64), __aligned__ (16)));
    73	# else
    74	typedef float La_x86_64_xmm __attribute__ ((__mode__ (__V4SF__)));
    75	# endif
    76	
    77	typedef union
    78	{
    79	# if __GNUC_PREREQ (4,0)
    80	  La_x86_64_ymm ymm[2];
    81	  La_x86_64_zmm zmm[1];
    82	# endif
    83	  La_x86_64_xmm xmm[4];
    84	} La_x86_64_vector __attribute__ ((__aligned__ (16)));
    85	
    86	typedef struct La_x86_64_regs
    87	{
    88	  uint64_t lr_rdx;
    89	  uint64_t lr_r8;
    90	  uint64_t lr_r9;
    91	  uint64_t lr_rcx;
    92	  uint64_t lr_rsi;
    93	  uint64_t lr_rdi;
    94	  uint64_t lr_rbp;
    95	  uint64_t lr_rsp;
    96	  La_x86_64_xmm lr_xmm[8];
    97	  La_x86_64_vector lr_vector[8];
    98	#ifndef __ILP32__
    99	  __int128_t __glibc_unused1[4];
   100	#endif
   101	} La_x86_64_regs;
   102	
   103	/* Return values for calls from PLT on x86-64.  */
   104	typedef struct La_x86_64_retval
   105	{
   106	  uint64_t lrv_rax;
   107	  uint64_t lrv_rdx;
   108	  La_x86_64_xmm lrv_xmm0;
   109	  La_x86_64_xmm lrv_xmm1;
   110	  long double lrv_st0;
   111	  long double lrv_st1;
   112	  La_x86_64_vector lrv_vector0;
   113	  La_x86_64_vector lrv_vector1;
   114	#ifndef __ILP32__
   115	  __int128_t __glibc_unused1;
   116	  __int128_t __glibc_unused2;
   117	#endif
   118	} La_x86_64_retval;
   119	
   120	#define La_x32_regs La_x86_64_regs
   121	#define La_x32_retval La_x86_64_retval
   122	
   123	__BEGIN_DECLS
   124	
   125	extern Elf64_Addr la_x86_64_gnu_pltenter (Elf64_Sym *__sym,
   126						  unsigned int __ndx,
   127						  uintptr_t *__refcook,
   128						  uintptr_t *__defcook,
   129						  La_x86_64_regs *__regs,
   130						  unsigned int *__flags,
   131						  const char *__symname,
   132						  long int *__framesizep);
   133	extern unsigned int la_x86_64_gnu_pltexit (Elf64_Sym *__sym,
   134						   unsigned int __ndx,
   135						   uintptr_t *__refcook,
   136						   uintptr_t *__defcook,
   137						   const La_x86_64_regs *__inregs,
   138						   La_x86_64_retval *__outregs,
   139						   const char *__symname);
   140	
   141	extern Elf32_Addr la_x32_gnu_pltenter (Elf32_Sym *__sym,
   142					       unsigned int __ndx,
   143					       uintptr_t *__refcook,
   144					       uintptr_t *__defcook,
   145					       La_x32_regs *__regs,
   146					       unsigned int *__flags,
   147					       const char *__symname,
   148					       long int *__framesizep);
   149	extern unsigned int la_x32_gnu_pltexit (Elf32_Sym *__sym,
   150						unsigned int __ndx,
   151						uintptr_t *__refcook,
   152						uintptr_t *__defcook,
   153						const La_x32_regs *__inregs,
   154						La_x32_retval *__outregs,
   155						const char *__symname);
   156	
   157	__END_DECLS
   158	
   159	#endif