mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
ae0ee59614
$ m=aarch64-tiny
$ make -j8 m=$m o/$m/tool/hello/hello.com o/third_party/qemu/qemu-aarch64
$ o/third_party/qemu/qemu-aarch64 o/$m/tool/hello/hello.com
hello world
$ ls -hal o/$m/tool/hello/hello.com
-rwxr-xr-x 1 jart jart 4.0K May 9 05:04 o/aarch64-tiny/tool/hello/hello.com
75 lines
3.1 KiB
C
75 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear 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 CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/runtime/internal.h"
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#include "libc/runtime/runtime.h"
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#ifndef __x86_64__
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int main(int, char **, char **) __attribute__((__weak__));
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#if 0
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static inline long sys_set_tid_address(int *t) {
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register long res asm("x0");
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register long arg asm("x0") = (long)t;
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asm volatile("mov\tx8,%1\n\t"
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"svc\t0"
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: "=r"(res)
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: "i"(96), "r"(arg)
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: "x8", "memory");
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return res;
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}
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#endif
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typedef int init_f(int argc, char **argv, char **envp, unsigned long *auxv);
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extern init_f __strace_init;
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extern init_f *__init_array_start[] __attribute__((__weak__));
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extern init_f *__init_array_end[] __attribute__((__weak__));
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void cosmo(long *sp) {
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int argc;
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init_f **fp;
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char **argv, **envp;
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unsigned long *auxv;
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argc = *sp;
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argv = (char **)(sp + 1);
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envp = (char **)(sp + 1 + argc + 1);
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auxv = (unsigned long *)(sp + 1 + argc + 1);
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for (;;) {
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if (!*auxv++) {
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break;
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}
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}
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#ifdef SYSDEBUG
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argc = __strace_init(argc, argv, envp, auxv);
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#endif
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__argc = argc;
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__argv = argv;
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__envp = envp;
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__auxv = auxv;
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environ = envp;
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if (argc) program_invocation_name = argv[0];
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_init();
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for (fp = __init_array_start; fp < __init_array_end; ++fp) {
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(*fp)(argc, argv, envp, auxv);
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}
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exit(main(argc, argv, envp));
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}
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#endif /* __aarch64__ */
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