mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 15:03:34 +00:00
1422e96b4e
There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
124 lines
4.5 KiB
C
124 lines
4.5 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/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/nexgen32e/rdtsc.h"
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#include "libc/runtime/internal.h"
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#include "libc/runtime/memtrack.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/syslib.internal.h"
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#include "libc/thread/thread.h"
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#include "libc/thread/tls.h"
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#ifndef __x86_64__
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int main(int, char **, char **) __attribute__((__weak__));
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typedef int init_f(int argc, char **argv, char **envp, unsigned long *auxv);
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extern long syscon_start[];
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extern long syscon_end[];
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extern long syscon_linux[];
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extern long syscon_xnu[];
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extern long syscon_freebsd[];
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extern long syscon_openbsd[];
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extern long syscon_netbsd[];
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extern long syscon_windows[];
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extern init_f __strace_init;
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extern init_f *__preinit_array_start[] __attribute__((__weak__));
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extern init_f *__preinit_array_end[] __attribute__((__weak__));
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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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extern pthread_mutex_t __mmi_lock_obj;
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extern int hostos asm("__hostos");
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textstartup void cosmo(long *sp, struct Syslib *m1) {
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int argc;
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init_f **fp;
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uintptr_t *pp;
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long *mp, *magnums;
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char **argv, **envp;
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unsigned long *auxv;
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// get startup timestamp as early as possible
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// its used by --strace and also kprintf() %T
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kStartTsc = rdtsc();
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// extracts arguments from old sysv stack abi
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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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while (*auxv++) donothing;
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// detect apple m1 environment
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if ((__syslib = m1)) {
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hostos = _HOSTXNU;
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magnums = syscon_xnu;
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} else {
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hostos = _HOSTLINUX;
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magnums = syscon_linux;
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}
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// setup system magic numbers
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for (mp = syscon_start; mp < syscon_end; ++mp) {
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*mp = *magnums++;
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}
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// needed by kisdangerous()
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__oldstack = (intptr_t)sp;
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__pid = sys_getpid().ax;
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// initialize mmap() manager extremely early
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_mmi.n = ARRAYLEN(_mmi.s);
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_mmi.p = _mmi.s;
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__mmi_lock_obj._type = PTHREAD_MUTEX_RECURSIVE;
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#if 0
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#if IsAsan()
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__asan_init(argc, argv, envp, auxv);
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#endif
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#endif
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InitializeFileDescriptors();
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// set helpful globals
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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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// run initialization callbacks
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_init();
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__enable_tls();
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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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for (fp = __init_array_end; fp-- > __init_array_start;) {
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(*fp)(argc, argv, envp, auxv);
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}
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// run program
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exit(main(argc, argv, envp));
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}
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#endif /* __x86_64__ */
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