50 lines
1023 B
C++
50 lines
1023 B
C++
/*
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* \brief Thread-environment support common to all programs
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* \author Martin Stein
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* \date 2013-12-13
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*/
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/*
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* Copyright (C) 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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/* Genode includes */
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#include <base/stdint.h>
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#include <base/env.h>
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using namespace Genode;
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extern addr_t * __initial_sp;
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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(addr_t))));
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/*****************************
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** Startup library support **
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*****************************/
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void prepare_init_main_thread()
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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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