1 files changed, 95 insertions, 0 deletions
diff --git a/wirish/start_c.c b/wirish/start_c.c
new file mode 100644
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+++ b/wirish/start_c.c
@@ -0,0 +1,95 @@
+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2011 LeafLabs, LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *****************************************************************************/
+
+/*
+ * This file is a modified version of a file obtained from
+ * CodeSourcery Inc. (now part of Mentor Graphics Corp.), in which the
+ * following text appeared:
+ *
+ * Copyright (c) 2006, 2007 CodeSourcery Inc
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include <stddef.h>
+
+extern void __libc_init_array(void);
+
+extern int main(int, char**, char**);
+
+extern void exit(int) __attribute__((noreturn, weak));
+
+/* The linker must ensure that these are at least 4-byte aligned. */
+extern char __data_start__, __data_end__;
+extern char __bss_start__, __bss_end__;
+
+struct rom_img_cfg {
+    int *img_start;
+};
+
+extern char _lm_rom_img_cfgp;
+
+void __attribute__((noreturn)) start_c(void) {
+    struct rom_img_cfg *img_cfg = (struct rom_img_cfg*)&_lm_rom_img_cfgp;
+    int *src = img_cfg->img_start;
+    int *dst = (int*)&__data_start__;
+    int exit_code;
+
+    /* Initialize .data, if necessary. */
+    if (src != dst) {
+        int *end = (int*)&__data_end__;
+        while (dst < end) {
+            *dst++ = *src++;
+        }
+    }
+
+    /* Zero .bss. */
+    dst = (int*)&__bss_start__;
+    while (dst < (int*)&__bss_end__) {
+        *dst++ = 0;
+    }
+
+    /* Run initializers. */
+    __libc_init_array();
+
+    /* Jump to main. */
+    exit_code = main(0, 0, 0);
+    if (exit) {
+        exit(exit_code);
+    }
+
+    /* If exit is NULL, make sure we don't return. */
+    for (;;)
+        continue;
+}