/* Machine-dependent ELF dynamic relocation inline functions.  x32 version.

   Copyright (C) 2012-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C 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.

   The GNU C 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 the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

/* Must allow <sysdeps/x86_64/dl-machine.h> to be included more than once.

   See #ifdef RESOLVE_MAP in sysdeps/x86_64/dl-machine.h.  */

#include <sysdeps/x86_64/dl-machine.h>

#ifndef _X32_DL_MACHINE_H

#define _X32_DL_MACHINE_H

#undef ARCH_LA_PLTENTER

#undef ARCH_LA_PLTEXIT

#undef RTLD_START

/* Names of the architecture-specific auditing callback functions.  */

#define ARCH_LA_PLTENTER x32_gnu_pltenter

#define ARCH_LA_PLTEXIT x32_gnu_pltexit

/* Initial entry point code for the dynamic linker.

   The C function `_dl_start' is the real entry point;

   its return value is the user program's entry point.  */

#define RTLD_START asm ("\n\

.text\n\

	.p2align 4\n\

.globl _start\n\

.globl _dl_start_user\n\

_start:\n\

	movl %esp, %edi\n\

	call _dl_start\n\

_dl_start_user:\n\

	# Save the user entry point address in %r12.\n\

	movl %eax, %r12d\n\

	# See if we were run as a command with the executable file\n\

	# name as an extra leading argument.\n\

	movl _dl_skip_args(%rip), %eax\n\

	# Pop the original argument count.\n\

	movl (%rsp), %edx\n\

	# Adjust the stack pointer to skip _dl_skip_args words.\n\

	lea 4(%rsp,%rax,4), %esp\n\

	# Subtract _dl_skip_args from argc.\n\

	subl %eax, %edx\n\

	# Push argc back on the stack.\n\

	subl $4, %esp\n\

	movl %edx, (%rsp)\n\

	# Call _dl_init (struct link_map *main_map, int argc, char **argv, char **env)\n\

	# argc -> rsi\n\

	movl %edx, %esi\n\

	# Save %rsp value in %r13.\n\

	movl %esp, %r13d\n\

	# And align stack for the _dl_init call.\n\

	and $-16, %esp\n\

	# _dl_loaded -> rdi\n\

	movl _rtld_local(%rip), %edi\n\

	# env -> rcx\n\

	lea 8(%r13,%rdx,4), %ecx\n\

	# argv -> rdx\n\

	lea 4(%r13), %edx\n\

	# Clear %rbp to mark outermost frame obviously even for constructors.\n\

	xorl %ebp, %ebp\n\

	# Call the function to run the initializers.\n\

	call _dl_init\n\

	# Pass our finalizer function to the user in %rdx, as per ELF ABI.\n\

	lea _dl_fini(%rip), %edx\n\

	# And make sure %rsp points to argc stored on the stack.\n\

	movl %r13d, %esp\n\

	# Jump to the user's entry point.\n\

	jmp *%r12\n\

.previous\n\

");

#endif /* !_X32_DL_MACHINE_H */