mirror of
git://sourceware.org/git/newlib-cygwin.git
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063d67faf0
Author: Mike Frysinger <vapier@gentoo.org>
Date: Mon Jan 17 22:20:20 2022 -0500
newlib: internalize HAVE_INITFINI_ARRAY
This define is only used by newlib internally, so stop exporting it
as HAVE_INITFINI_ARRAY since this can conflict with defines packages
use themselves.
We don't really need to add _ to HAVE_INIT_FINI too since it isn't
exported in newlib.h, but might as well be consistent here.
We can't (easily) add this to newlib_cflags like HAVE_INIT_FINI is
because this is based on a compile-time test in the top configure,
not on plain shell code in configure.host. We'd have to replicate
the test in every subdir in order to have it passed down.
135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/* Support for cris*-axis-linux-gnu and src/sim/cris simulator.
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Copyright (C) 2000-2005, 2017 Axis Communications.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Neither the name of Axis Communications nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AXIS
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COMMUNICATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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#include "linunistd.h"
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#include "newlib.h"
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#ifdef _HAVE_INITFINI_ARRAY
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#define _init __libc_init_array
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#define _fini __libc_fini_array
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#endif
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extern void exit (int) __attribute ((__noreturn__));
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__asm__ (".syntax no_register_prefix");
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#ifdef __ELF__
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/* This simulator magic for an earlier simulator was supposed to be
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found two bytes before _start. Let's keep it for sake of
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compatibility. Trying to emit them with an ordinary const char[]
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and attribute section makes gcc barf; it doesn't like having the
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same section attribute for both code and data.
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The code is supposed to cause a crash if someone jumps to 0. */
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__asm__
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(
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" .section .startup,\"ax\",@progbits\n"
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" .byte 55,55\n"
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" move.d 0xbadacce5,r9\n"
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" clear.d [r9]\n"
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" setf\n"
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" setf\n"
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" .previous");
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#endif
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__asm__
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(
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#ifdef __AOUT__
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" .text\n\t"
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#elif defined (__ELF__)
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" .section .startup,\"ax\",@progbits\n"
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#endif
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" .global __start\n"
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"__start:\n"
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/* SP must be set up by the simulator or the system. */
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/* Find ARGC, ARGV and ENV. */
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/* ARGC. */
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" move.d [sp],r10\n"
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/* ARGV. */
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" move.d sp,r11\n"
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" addq 4,r11\n"
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/* ENVP. */
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" move.d sp,r12\n"
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" addi r10.d,r12\n"
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" addq 8,r12\n"
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/* Terminate R9 and R6; we don't have a "console_print_etrax" or system
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call function. */
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" clear.d r9\n"
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" clear.d r6\n"
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" move.d __start1,r13\n"
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" jump r13\n"
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" setf\n"
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#ifndef __AOUT__
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/* We rely on a.out not being in .data here. Quite fragile, but
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covered by e.g. running the GCC test-suite for cris-unknown-aout. */
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" .previous"
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#endif
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);
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extern void _Libctors (void);
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extern void _Libdtors (void);
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extern void __init__start (void) __attribute ((weak));
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extern void __aout__ctors (void) __attribute ((weak));
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static void start1 () __asm__ ("__start1") __attribute ((__used__));
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static void
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start1 (int argc, char **argv, char **env)
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{
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#ifdef __ELF__
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/* For ELF systems, we call _init and register _fini with atexit. */
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{
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extern void _init (void);
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extern void _fini (void);
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_init ();
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if (atexit (_fini) != 0)
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exit (-1);
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}
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#else
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/* Constructors which may get here through the ELF .init section, when
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linking ELF and producing a.out. */
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if (__init__start)
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__init__start ();
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if (__aout__ctors)
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__aout__ctors ();
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/* Call constructors in shared libraries. */
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_Libctors ();
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if (atexit (_Libdtors) != 0)
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exit (-1);
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#endif
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/* Call the user program. */
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exit (main (argc, argv, env));
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}
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