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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [machine/] [i386/] [crt0.c] - Blame information for rev 207

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Line No. Rev Author Line
1 207 jeremybenn
/* libc/sys/linux/crt0.c - Run-time initialization */
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/* FIXME: This should be rewritten in assembler and
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          placed in a subdirectory specific to a platform.
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          There should also be calls to run constructors. */
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/* Written 2000 by Werner Almesberger */
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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extern char **environ;
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extern int main(int argc,char **argv,char **envp);
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extern char _end;
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extern char __bss_start;
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void _start(int args)
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{
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    /*
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     * The argument block begins above the current stack frame, because we
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     * have no return address. The calculation assumes that sizeof(int) ==
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     * sizeof(void *). This is okay for i386 user space, but may be invalid in
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     * other cases.
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     */
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    int *params = &args-1;
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    int argc = *params;
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    char **argv = (char **) (params+1);
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    environ = argv+argc+1;
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    /* Note: do not clear the .bss section.  When running with shared
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     *       libraries, certain data items such __mb_cur_max or environ
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     *       may get placed in the .bss, even though they are initialized
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     *       to non-zero values.  Clearing the .bss will end up zeroing
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     *       out their initial values.  The .bss is already initialized
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     *       by this time by Linux.  */
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    tzset(); /* initialize timezone info */
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    exit(main(argc,argv,environ));
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}

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