1 files changed, 93 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/elf/start.S b/sysdeps/sparc/sparc64/elf/start.S
new file mode 100644
index 0000000000..73f42367ee
--- /dev/null
+++ b/sysdeps/sparc/sparc64/elf/start.S
@@ -0,0 +1,93 @@
+/* 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