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crt0.cpp
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crt0.cpp
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/*
* Copyright (c) 2018-2020, Andreas Kling <[email protected]>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Types.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/internals.h>
#include <unistd.h>
extern "C" {
int main(int, char**, char**);
// Tell the compiler that this may be called from somewhere else.
int _entry(int argc, char** argv) __attribute__((used));
void _start(int, char**, char**) __attribute__((used));
NAKED void _start(int, char**, char**)
{
#if ARCH(AARCH64)
asm(
"mov x29, 0\n"
"mov x30, 0\n"
"bl _entry\n");
#elif ARCH(RISCV64)
asm(
"li fp, 0\n"
"li ra, 0\n"
"tail _entry@plt\n");
#elif ARCH(X86_64)
asm(
"push $0\n"
"jmp _entry@plt\n");
#else
# error "Unknown architecture"
#endif
}
int _entry(int argc, char** argv)
{
__begin_atexit_locking();
int status = main(argc, argv, environ);
exit(status);
return 20150614;
}
}