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- /*
- * Copyright (C) 2003 by Erik Andersen
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include <features.h>
- /* Integer registers. */
- #define r0 0
- #define r1 1
- #define r2 2
- #define r3 3
- #define r4 4
- #define r5 5
- #define r6 6
- #define r7 7
- #define r8 8
- #define r9 9
- #define r10 10
- #define r13 13
- #define r31 31
- .text
- .globl _start
- .type _start,%function
- .type _init,%function
- .type _fini,%function
- #ifndef __UCLIBC_CTOR_DTOR__
- .weak _init
- .weak _fini
- #endif
- .type main,%function
- .type __uClibc_main,%function
- _start:
- mr r9,r1 /* Save the stack pointer and pass it to __uClibc_main */
- clrrwi r1,r1,4 /* Align stack ptr to 16 bytes */
- #ifdef __PIC__
- bl _GLOBAL_OFFSET_TABLE_-4@local
- mflr r31
- #endif
- /* Set up an initial stack frame, and clear the LR. */
- li r0,0
- stwu r1,-16(r1)
- mtlr r0
- stw r0,0(r1)
- /* find argc from the stack pointer */
- lwz r4,0(r9)
- /* find argv one word offset from the stack pointer */
- addi r5,r9,4
- mr r8,r3 /* Pass _dl_fini from ldso or NULL if statically linked
- Note: using r3 instead of r7, since linux 2.6 clobbers r7 */
- /* Ok, now run uClibc's main() -- shouldn't return */
- #ifdef __PIC__
- lwz r6,_init@got(r31)
- lwz r7,_fini@got(r31)
- lwz r3,main@got(r31)
- b __uClibc_main@plt
- #else
- lis r6,_init@ha # load top 16 bits
- addi r6,r6,_init@l # load bottom 16 bits
- lis r7,_fini@ha # load top 16 bits
- addi r7,r7,_fini@l # load bottom 16 bits
- lis r3,main@ha # load top 16 bits
- addi r3,r3,main@l # load bottom 16 bits
- b __uClibc_main
- #endif
- .size _start,.-_start
- /* 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
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