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+/* Startup code for elf64-sparc
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+
+
+ .section ".text"
+ .align 4
+ .global _start
+ .type _start,#function
+_start:
+
+ /* First order of business is to load %g4 with our base address. */
+ sethi %uhi(_start), %g4
+ or %g4, %ulo(_start), %g4
+ sllx %g4, 32, %g4
+
+ /* Terminate the stack frame, and reserve space for functions to
+ drop their arguments. */
+ mov %g0, %fp
+ sub %sp, 6*8, %sp
+
+ /* Save %g1. When starting a binary via the dynamic linker, %g1
+ contains the address of the shared library termination function,
+ which we will register below with atexit() to be called by exit().
+ If we are statically linked, this will be NULL. */
+
+ /* Do essential libc initialization (sp points to argc, argv, and envp) */
+ call __libc_init_first
+ mov %g1, %l0
+
+ /* Now that we have the proper stack frame, register library termination
+ function, if there is any: */
+
+ brz,pn %l0, 1f
+ nop
+ call atexit
+ mov %l0, %o0
+1:
+
+ /* Extract the arguments and environment as encoded on the stack. The
+ argument info starts after one register window (16 words) past the SP,
+ plus the bias we added, plus the magic v9 STACK_BIAS. */
+ ldx [%sp+STACK_BIAS+22*8], %o0
+ add %sp, STACK_BIAS+23*8, %o1
+ sllx %o0, 3, %o2
+ add %o2, %o1, %o2
+ sethi %hi(__environ), %g2
+ add %o2, 8, %o2
+ add %g2, %g4, %g2
+ stx %o2, [%g2+%lo(__environ)]
+
+ mov %o0, %l0 /* tuck them away */
+ mov %o1, %l1
+
+ /* Call _init, the entry point to our own .init section. */
+ call _init
+ mov %o2, %l2
+
+ /* Register our .fini section with atexit. */
+ sethi %hi(_fini), %o0
+ add %o0, %g4, %o0
+ call atexit
+ add %o0, %lo(_fini), %o0
+
+ /* Call the user's main and exit with its return value. */
+ mov %l0, %o0
+ mov %l1, %o1
+ call main
+ mov %l2, %o2
+ call exit
+ nop
+
+ /* Die very horribly if exit returns. */
+ illtrap 0
+
+ .size _start,.-_start