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+/* Startup code compliant to the ELF Mips ABI.
+ Copyright (C) 1995, 1997, 2000, 2001, 2002, 2003, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define __ASSEMBLY__ 1
+#include <entry.h>
+#include <sgidefs.h>
+#include <sys/asm.h>
+
+#ifndef ENTRY_POINT
+#error ENTRY_POINT needs to be defined for start.S on MIPS/ELF.
+#endif
+
+/* This is the canonical entry point, usually the first thing in the text
+ segment. The SVR4/Mips ABI (pages 3-31, 3-32) says that when the entry
+ point runs, most registers' values are unspecified, except for:
+
+ v0 ($2) Contains a function pointer to be registered with `atexit'.
+ This is how the dynamic linker arranges to have DT_FINI
+ functions called for shared libraries that have been loaded
+ before this code runs.
+
+ sp ($29) The stack contains the arguments and environment:
+ 0(%esp) argc
+ 4(%esp) argv[0]
+ ...
+ (4*argc)(%esp) NULL
+ (4*(argc+1))(%esp) envp[0]
+ ...
+ NULL
+ ra ($31) The return address register is set to zero so that programs
+ that search backword through stack frames recognize the last
+ stack frame.
+*/
+
+
+/* We need to call:
+ __libc_start_main (int (*main) (int, char **, char **), int argc,
+ char **argv, void (*init) (void), void (*fini) (void),
+ void (*rtld_fini) (void), void *stack_end)
+*/
+
+ .text
+ .globl ENTRY_POINT
+ .type ENTRY_POINT,@function
+ENTRY_POINT:
+#ifdef __PIC__
+ SETUP_GPX($0)
+ SETUP_GPX64($25,$0)
+#else
+ PTR_LA $28, _gp /* Setup GP correctly if we're non-PIC. */
+ move $31, $0
+#endif
+
+ PTR_LA $4, main /* main */
+ PTR_L $5, 0($29) /* argc */
+ PTR_ADDIU $6, $29, PTRSIZE /* argv */
+
+ /* Allocate space on the stack for seven arguments (o32 only)
+ and make sure the stack is aligned to double words (8 bytes)
+ on o32 and quad words (16 bytes) on n32 and n64. */
+
+ and $29, -2 * SZREG
+#if _MIPS_SIM == _ABIO32
+ PTR_SUBIU $29, 32
+#endif
+ PTR_LA $7, __libc_csu_init /* init */
+ PTR_LA $8, __libc_csu_fini
+#if _MIPS_SIM == _ABIO32
+ PTR_S $8, 16($29) /* fini */
+ PTR_S $2, 20($29) /* rtld_fini */
+ PTR_S $29, 24($29) /* stack_end */
+#else
+ move $9, $2 /* rtld_fini */
+ move $10, $29 /* stack_end */
+#endif
+ jal __libc_start_main
+hlt: b hlt /* Crash if somehow it does return. */
+
+/* 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