62 lines
1.2 KiB
C++
62 lines
1.2 KiB
C++
/*
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* \brief Platform-specific helper functions for the _main() function
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* \author Christian Prochaska
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* \author Christian Helmuth
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* \date 2009-08-05
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*/
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/*
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* Copyright (C) 2009-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <base/thread.h>
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#include <linux_syscalls.h>
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namespace Genode { void platform_main_bootstrap(); }
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/*
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* Define 'lx_environ' pointer.
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*/
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char **lx_environ;
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/**
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* Natively aligned memory location used in the lock implementation
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*/
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int main_thread_futex_counter __attribute__((aligned(sizeof(Genode::addr_t))));
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/**
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* Initial value of SP register (in crt0)
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*/
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extern Genode::addr_t *__initial_sp;
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/**
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* Platform-specific bootstrap
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*/
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void Genode::platform_main_bootstrap()
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{
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static struct Bootstrap
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{
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Bootstrap()
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{
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/*
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* Initialize the 'lx_environ' pointer
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*
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* environ = &argv[argc + 1]
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* __initial_sp[0] = argc (always 1 in Genode)
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* __initial_sp[1] = argv[0]
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* __initial_sp[2] = NULL
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* __initial_sp[3] = environ
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*/
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lx_environ = (char**)&__initial_sp[3];
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}
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} bootstrap;
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}
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