46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
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* Copyright (c) 2015-2019 Contributors as noted in the AUTHORS file
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*
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* This file is part of Gilbraltar, a bare-metal OS for RPi4.
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*
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* Permission to use, copy, modify, and/or distribute this software
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* for any purpose with or without fee is hereby granted, provided
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* that the above copyright notice and this permission notice appear
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* in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stddef.h>
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#include <stdint.h>
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/*
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* The stack canary value will be initialised to a pseudo-random value by
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* crt_init_early(), keep an easily recognisable "terminator" value here to
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* flag if that did not happen as expected.
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*/
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uintptr_t SSP_GUARD_SYMBOL = 0x00deadbeef0d0a00;
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/*
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* Called by compiler-generated code when corruption of the canary value is
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* detected. There is very little we can do here safely, so just print a
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* message and abort, taking care to make minimal use of the stack.
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*/
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static const char stack_chk_fail_message[] =
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"ABORT: Stack corruption detected\r\n";
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extern void gilbraltar_serial_puts(const char *str);
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__attribute__((noreturn)) void SSP_FAIL_SYMBOL(void) {
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gilbraltar_serial_puts(stack_chk_fail_message);
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for (;;)
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;
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}
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