2424108a14
Based on patches provided by Hanspeter Portner: http://forums.leaflabs.com/topic.php?id=1717#post-11812 Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2011 LeafLabs, LLC.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/*
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* This file is a modified version of a file obtained from
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* CodeSourcery Inc. (now part of Mentor Graphics Corp.), in which the
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* following text appeared:
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*
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* Copyright (c) 2006, 2007 CodeSourcery Inc
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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#include <stddef.h>
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extern void __libc_init_array(void);
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extern int main(int, char**, char**);
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extern void exit(int) __attribute__((noreturn, weak));
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/* The linker must ensure that these are at least 4-byte aligned. */
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extern char __data_start__, __data_end__;
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extern char __bss_start__, __bss_end__;
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struct rom_img_cfg {
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int *img_start;
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};
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extern char _lm_rom_img_cfgp;
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void __attribute__((noreturn)) start_c(void) {
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struct rom_img_cfg *img_cfg = (struct rom_img_cfg*)&_lm_rom_img_cfgp;
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int *src = img_cfg->img_start;
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int *dst = (int*)&__data_start__;
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int exit_code;
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/* Initialize .data, if necessary. */
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if (src != dst) {
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int *end = (int*)&__data_end__;
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while (dst < end) {
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*dst++ = *src++;
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}
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}
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/* Zero .bss. */
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dst = (int*)&__bss_start__;
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while (dst < (int*)&__bss_end__) {
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*dst++ = 0;
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}
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/* Run initializers. */
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__libc_init_array();
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/* Jump to main. */
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exit_code = main(0, 0, 0);
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if (exit) {
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exit(exit_code);
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}
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/* If exit is NULL, make sure we don't return. */
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for (;;)
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continue;
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}
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