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* sysdeps/m68k/elf/start.S: Let __libc_start_main do most of the
init stuff. Wed Mar 11 10:30:53 1998 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/elf/start.S: Let __libc_start_main do most of the init stuff.
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Wed Mar 11 10:30:53 1998 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
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* sysdeps/m68k/elf/start.S: Let __libc_start_main do most of the
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init stuff.
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1998-03-10 Ulrich Drepper <drepper@cygnus.com>
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* libio/iovdprintf.c (_IO_vdprintf): Set _IO_DELETE_DONT_CLOSE
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@ -1,5 +1,5 @@
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/* Startup code compliant to the ELF m68k ABI.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -43,43 +43,31 @@ _start:
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the outermost frame obviously. */
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sub.l %fp, %fp
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/* %a1 contains the address of the shared library termination
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function, which we will register with `atexit' to be called by
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`exit'. */
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tstl %a1
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jbeq 1f
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move.l %a1, -(%sp)
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jbsr atexit
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addql #4, %sp
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1:
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/* Do essential libc initialization. In statically linked
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programs under the GNU Hurd, this is what sets up the
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arguments on the stack for the code below. */
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jbsr __libc_init_first
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/* Extract the arguments and environment as encoded on the stack
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and set up the arguments for `main': argc, argv, envp. */
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/* Extract the arguments as encoded on the stack and set up the
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arguments for `main': argc, argv. envp will be determined
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later in __libc_start_main. */
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move.l (%sp)+, %d0 /* Pop the argument count. */
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lea (4,%sp,%d0*4), %a0 /* envp = &argv[argc + 1] */
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move.l %a0, _environ /* Store it in the global variable. */
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pea (%a0) /* Push third argument: envp. */
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pea 4(%sp) /* Push second argument: argv. */
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move.l %sp, %a0 /* The argument vector starts just at the
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current stack top. */
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pea (%a1) /* Push address of the shared library
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termination function. */
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/* Push the address of our own entry points to `.fini' and
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`.init'. */
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pea _fini
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pea _init
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pea (%a0) /* Push second argument: argv. */
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move.l %d0, -(%sp) /* Push first argument: argc. */
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/* Call `_init', which is the entry point to our own `.init'
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section; and register with `atexit' to have `exit' call
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`_fini', which is the entry point to our own `.fini' section. */
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jbsr _init
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move.l #_fini, -(%sp)
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jbsr atexit
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addq.l #4, %sp
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pea main
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/* Call the user's main function, and exit with its value. */
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jbsr main
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move.l %d0, (%sp)
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1: jbsr exit /* This should never return. */
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jbra 1b /* Try again if somehow it does return. */
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/* Call the user's main function, and exit with its value. But
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let the libc call main. */
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jbsr __libc_start_main
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illegal /* Crash if somehow `exit' does return. */
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/* Define a symbol for the first piece of initialized data. */
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.data
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