/* Startup code compliant to the ELF RISC-V ABI.

   Copyright (C) 1995-2018 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.

   In addition to the permissions in the GNU Lesser General Public

   License, the Free Software Foundation gives you unlimited

   permission to link the compiled version of this file with other

   programs, and to distribute those programs without any restriction

   coming from the use of this file. (The GNU Lesser General Public

   License restrictions do apply in other respects; for example, they

   cover modification of the file, and distribution when not linked

   into another program.)

   Note that people who make modified versions of this file are not

   obligated to grant this special exception for their modified

   versions; it is their choice whether to do so. The GNU Lesser

   General Public License gives permission to release a modified

   version without this exception; this exception also makes it

   possible to release a modified version which carries forward this

   exception.

   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/>.  */

#define __ASSEMBLY__ 1

#include <entry.h>

#include <sysdep.h>

#include <sys/asm.h>

/* The entry point's job is to call __libc_start_main.  Per the ABI,

   a0 contains the address of a function to be passed to atexit.

   __libc_start_main wants this in a5.  */

ENTRY (ENTRY_POINT)

	call  .Lload_gp

	mv    a5, a0  /* rtld_fini.  */

	/* main may be in a shared library.  */

	la   a0, main

	REG_L a1, 0(sp)      /* argc.  */

	addi  a2, sp, SZREG  /* argv.  */

	andi  sp, sp, ALMASK /* Align stack. */

	lla   a3, __libc_csu_init

	lla   a4, __libc_csu_fini

	mv    a6, sp  /* stack_end.  */

	tail  __libc_start_main@plt

END (ENTRY_POINT)

/* Dynamic links need the global pointer to be initialized prior to calling

   any shared library's initializers, so we use preinit_array to load it.

   This doesn't cut it for static links, though, since the global pointer

   needs to be initialized before calling __libc_start_main in that case.

   So we redundantly initialize it at the beginning of _start.  */

.Lload_gp:

.option push

.option norelax

	lla   gp, __global_pointer$

.option pop

	ret

	.section .preinit_array,"aw"

	.dc.a .Lload_gp

/* Define a symbol for the first piece of initialized data.  */

	.data

	.globl __data_start

__data_start:

	.weak data_start

	data_start = __data_start