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| author | Perry Hung <iperry@gmail.com> | 2011-02-27 15:49:51 -0500 |
|---|---|---|
| committer | Perry Hung <iperry@gmail.com> | 2011-02-27 15:56:40 -0500 |
| commit | 214941537f2211d5e2ef16e34440485d7e872d1a (patch) | |
| tree | af951df8867ab47bc474828d57a0bd22eed36ae0 /support/ld/libcs3_stm32_src/start_c.c | |
| parent | 43c5092d944ee1aa1424f2743c31bf33cb860c27 (diff) | |
| download | librambutan-214941537f2211d5e2ef16e34440485d7e872d1a.tar.gz librambutan-214941537f2211d5e2ef16e34440485d7e872d1a.zip | |
Refactor linker scripts. Rename irq and exception handlers.
Add common linker scripts for ram and rom. Add medium and high density
libraries for libcs3.
Diffstat (limited to 'support/ld/libcs3_stm32_src/start_c.c')
| -rw-r--r-- | support/ld/libcs3_stm32_src/start_c.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/support/ld/libcs3_stm32_src/start_c.c b/support/ld/libcs3_stm32_src/start_c.c new file mode 100644 index 0000000..dff9fa3 --- /dev/null +++ b/support/ld/libcs3_stm32_src/start_c.c @@ -0,0 +1,58 @@ +/* CS3 start_c routine.
+ *
+ * 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 "cs3.h"
+
+extern void __libc_init_array (void);
+
+extern int main (int, char **, char **);
+
+extern void exit (int) __attribute__ ((noreturn, weak));
+
+void __attribute ((noreturn))
+__cs3_start_c (void)
+{
+ unsigned regions = __cs3_region_num;
+ const struct __cs3_region *rptr = __cs3_regions;
+ int exit_code;
+
+ /* Initialize memory */
+ for (regions = __cs3_region_num, rptr = __cs3_regions; regions--; rptr++)
+ {
+ long long *src = (long long *)rptr->init;
+ long long *dst = (long long *)rptr->data;
+ unsigned limit = rptr->init_size;
+ unsigned count;
+
+ if (src != dst)
+ for (count = 0; count != limit; count += sizeof (long long))
+ *dst++ = *src++;
+ else
+ dst = (long long *)((char *)dst + limit);
+ limit = rptr->zero_size;
+ for (count = 0; count != limit; count += sizeof (long long))
+ *dst++ = 0;
+ }
+
+ /* Run initializers. */
+ __libc_init_array ();
+
+ exit_code = main (0, NULL, NULL);
+ if (exit)
+ exit (exit_code);
+ /* If exit is NULL, make sure we don't return. */
+ for (;;)
+ continue;
+}
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