diff options
Diffstat (limited to 'newlib/libc/sys/linux/crt0.c')
-rw-r--r-- | newlib/libc/sys/linux/crt0.c | 32 |
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)); +} |