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/* 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>
#include <time.h>
#include <string.h>
 
 
extern char **environ;
 
extern int main(int argc,char **argv,char **envp);
 
extern char _end;
extern char __bss_start;
 
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;
 
    /* Note: do not clear the .bss section.  When running with shared
     *       libraries, certain data items such __mb_cur_max or environ
     *       may get placed in the .bss, even though they are initialized
     *       to non-zero values.  Clearing the .bss will end up zeroing
     *       out their initial values.  The .bss is already initialized
     *       by this time by Linux.  */
 
    tzset(); /* initialize timezone info */
    exit(main(argc,argv,environ));
}