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Diffstat (limited to 'newlib/libc/sys/linux/crt0.c')
-rw-r--r--newlib/libc/sys/linux/crt0.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/crt0.c b/newlib/libc/sys/linux/crt0.c
new file mode 100644
index 000000000..420a2b92c
--- /dev/null
+++ b/newlib/libc/sys/linux/crt0.c
@@ -0,0 +1,32 @@
+/* libc/sys/linux/crt0.c - Run-time initialization */
+
+/* FIXME: This should be rewritten in assembler and
+ placed in a subdirectory specific to a platform.
+ There should also be calls to run constructors. */
+
+/* Written 2000 by Werner Almesberger */
+
+
+#include <stdlib.h>
+
+
+extern char **environ;
+
+extern int main(int argc,char **argv,char **envp);
+
+
+void _start(int args)
+{
+ /*
+ * The argument block begins above the current stack frame, because we
+ * have no return address. The calculation assumes that sizeof(int) ==
+ * sizeof(void *). This is okay for i386 user space, but may be invalid in
+ * other cases.
+ */
+ int *params = &args-1;
+ int argc = *params;
+ char **argv = (char **) (params+1);
+
+ environ = argv+argc+1;
+ exit(main(argc,argv,environ));
+}