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+/* Copyright (C) 1995, 1996, 1997, 1998, 2001, 2002, 2005
+ Free Software Foundation, Inc.
+
+ Copyright (C) 2010 Embecosm Limited
+
+ Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
+ Contributor Joern Rennecke <joern.rennecke@embecosm.com>
+ With other contributions from the OpenCores community.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* Stick in a dummy reference to main(), so that if an application
+ * is linking when the main() function is in a static library (.a)
+ * we can be sure that main() actually gets linked in */
+.type main,%function
+
+/* This is the canonical entry point, usually the first thing in the text
+ segment.
+
+ sp The stack contains the arguments and environment:
+ 0(sp) argc
+ 4(sp) argv[0]
+ ...
+ (4*argc)(sp) NULL
+ (4*(argc+1))(sp) envp[0]
+ ...
+ NULL
+*/
+
+#include <features.h>
+
+.text
+ .globl _start
+ .type _start,%function
+
+.global _start
+_start:
+
+#ifdef __PIC__
+ /* Obtain a pointer to .got in r16 */
+ l.jal .LPC0
+#ifndef __OR1K_NODELAY__
+ l.nop
+#endif
+.LPC0:
+ l.movhi r16, gotpchi(_GLOBAL_OFFSET_TABLE_+(.-.LPC0))
+ l.ori r16, r16, gotpclo(_GLOBAL_OFFSET_TABLE_+(.-.LPC0))
+ l.add r16, r16, r9
+#endif
+
+ /* Push stack limit onto the stack */
+ /* Provides highest stack address to user code (as stack grows
+ * downwards
+ * This is the seventh argument to __uClibc_main and thus needs to
+ * be passed on the stack
+ */
+ l.sw -4(r1),r1
+
+ /* Take values for argc and argv off the stack.
+ * These will be passed as arguments two and three to __uClibc_main
+ * and thus go in registers r4 and r5, respectively
+ */
+ l.lwz r4,0(r1)
+ l.addi r5,r1,4
+
+#ifdef __PIC__
+ l.lwz r3,got(main)(r16)
+#else
+ l.movhi r3,hi(main)
+ l.ori r3,r3,lo(main)
+#endif
+
+ /* Put the constructor and destructor initialization as args four and
+ five into r6 and r7 */
+#ifdef __PIC__
+ l.lwz r6, got(_init)(r16)
+ l.lwz r7, got(_fini)(r16)
+#else
+ l.movhi r6,hi(_init)
+ l.ori r6,r6,lo(_init)
+ l.movhi r7,hi(_fini)
+ l.ori r7,r7,lo(_fini)
+#endif
+
+ /* rtld_fini = NULL */
+ l.movhi r8, 0
+
+ /* Adjust stack to account for a total of 7 args (i.e. the last one is
+ on the stack. */
+ l.addi r1,r1,-4
+
+ /* Clear the frame pointer and link register since this is the
+ * outermost frame.
+ */
+ l.add r2,r0,r0
+ l.add r9,r0,r0
+
+ /* Let the libc call main and exit with its return code. */
+#ifdef __PIC__
+ l.j plt(__uClibc_main)
+#else
+ l.j __uClibc_main
+#endif
+ l.nop
+
+/* Define a symbol for the first piece of initialized data. */
+ .data
+ .globl __data_start
+__data_start:
+ .long 0
+ .weak data_start
+ data_start = __data_start