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/* Library support for -fsplit-stack. */
/* Copyright (C) 2009-2024 Free Software Foundation, Inc.
Contributed by Ian Lance Taylor <>.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<>. */
/* This is a libgcc internal header file for functions shared between
generic-morestack.c and generic-morestack-thread.c. The latter
file is only used when linking with the pthread library. */
/* The stack segment structure, defined in generic-morestack.c. */
struct stack_segment;
/* The list of stack segments for this thread. */
extern __thread struct stack_segment *__morestack_segments;
/* Print the string MSG/LEN, the errno number ERR, and a newline on
stderr, without using printf. Then crash. */
extern void __morestack_fail (const char *msg, size_t len, int err)
__attribute__ ((noreturn, visibility ("hidden")));
/* Release stack segments. */
extern struct dynamic_allocation_blocks *
__morestack_release_segments (struct stack_segment **, int)
__attribute__ ((visibility ("hidden")));
/* Store the stack information in a processor dependent manner. */
extern void __stack_split_initialize (void)
__attribute__ ((visibility ("hidden")));