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diff --git a/os/ports/GCC/PPC/crt0.s b/os/ports/GCC/PPC/crt0.s
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-/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file PPC/crt0.s
- * @brief Generic PowerPC startup file for ChibiOS/RT.
- *
- * @addtogroup PPC_CORE
- * @{
- */
-
-#if !defined(__DOXYGEN__)
-
- .section .crt0, "ax"
- .align 2
- .globl _boot_address
- .type _boot_address, @function
-_boot_address:
- /*
- * Stack setup.
- */
- lis %r1, __process_stack_end__@h
- ori %r1, %r1, __process_stack_end__@l
- li %r0, 0
- stwu %r0, -8(%r1)
- /*
- * Small sections registers initialization.
- */
- lis %r2, __sdata2_start__@h
- ori %r2, %r2, __sdata2_start__@l
- lis %r13, __sdata_start__@h
- ori %r13, %r13, __sdata_start__@l
- /*
- * Early initialization.
- */
- bl __early_init
- /*
- * BSS clearing.
- */
- lis %r4, __bss_start__@h
- ori %r4, %r4, __bss_start__@l
- lis %r5, __bss_end__@h
- ori %r5, %r5, __bss_end__@l
- li %r7, 0
-.bssloop:
- cmpl cr0, %r4, %r5
- bge cr0, .bssend
- stw %r7, 0(%r4)
- addi %r4, %r4, 4
- b .bssloop
-.bssend:
- /*
- * DATA initialization.
- */
- lis %r4, __romdata_start__@h
- ori %r4, %r4, __romdata_start__@l
- lis %r5, __data_start__@h
- ori %r5, %r5, __data_start__@l
- lis %r6, __data_end__@h
- ori %r6, %r6, __data_end__@l
-.dataloop:
- cmpl cr0, %r5, %r6
- bge cr0, .dataend
- lwz %r7, 0(%r4)
- addi %r4, %r4, 4
- stw %r7, 0(%r5)
- addi %r5, %r5, 4
- b .dataloop
-.dataend:
- /*
- * Late initialization.
- */
- bl __late_init
- /*
- * Main program invocation.
- */
- bl main
- b _main_exit_handler
-
- /*
- * Default main exit code, infinite loop.
- */
- .weak _main_exit_handler
- .globl _main_exit_handler
- .type _main_exit_handler, @function
-_main_exit_handler:
- b _main_exit_handler
-
- /*
- * Default early initialization code, none.
- */
- .weak __early_init
- .globl __early_init
- .type __early_init, @function
-__early_init:
- blr
-
- /*
- * Default late initialization code, none.
- */
- .weak __late_init
- .globl __late_init
- .type __late_init, @function
-__late_init:
- blr
-
-#endif /* !defined(__DOXYGEN__) */
-
-/** @} */