mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
82 lines
4.3 KiB
C
82 lines
4.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ This is free and unencumbered software released into the public domain. │
|
|
│ │
|
|
│ Anyone is free to copy, modify, publish, use, compile, sell, or │
|
|
│ distribute this software, either in source code form or as a compiled │
|
|
│ binary, for any purpose, commercial or non-commercial, and by any │
|
|
│ means. │
|
|
│ │
|
|
│ In jurisdictions that recognize copyright laws, the author or authors │
|
|
│ of this software dedicate any and all copyright interest in the │
|
|
│ software to the public domain. We make this dedication for the benefit │
|
|
│ of the public at large and to the detriment of our heirs and │
|
|
│ successors. We intend this dedication to be an overt act of │
|
|
│ relinquishment in perpetuity of all present and future rights to this │
|
|
│ software under copyright law. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
|
|
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
|
|
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
|
|
│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR │
|
|
│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │
|
|
│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR │
|
|
│ OTHER DEALINGS IN THE SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "ape/relocations.h"
|
|
#include "ape/sections.internal.h"
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/metalfile.internal.h"
|
|
#include "libc/intrin/directmap.internal.h"
|
|
#include "libc/intrin/kprintf.h"
|
|
#include "libc/intrin/weaken.h"
|
|
#include "libc/macros.internal.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/runtime/pc.internal.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/at.h"
|
|
#include "libc/sysv/consts/o.h"
|
|
#include "libc/sysv/consts/prot.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
#ifdef __x86_64__
|
|
|
|
#define MAP_ANONYMOUS_linux 0x00000020
|
|
#define MAP_FIXED_linux 0x00000010
|
|
#define MAP_SHARED_linux 0x00000001
|
|
|
|
__static_yoink("_init_metalfile");
|
|
|
|
void *__ape_com_base;
|
|
size_t __ape_com_size = 0;
|
|
|
|
textstartup void InitializeMetalFile(void) {
|
|
if (IsMetal()) {
|
|
/*
|
|
* Copy out a pristine image of the program — before the program might
|
|
* decide to modify its own .data section.
|
|
*
|
|
* This code is included if a symbol "file:/proc/self/exe" is defined
|
|
* (see libc/calls/metalfile.internal.h & libc/calls/metalfile_init.S).
|
|
* The zipos code will automatically arrange to do this. Alternatively,
|
|
* user code can __static_yoink this symbol.
|
|
*/
|
|
size_t size = ROUNDUP(_ezip - __executable_start, 4096);
|
|
// TODO(jart): Restore support for ZIPOS on metal.
|
|
void *copied_base;
|
|
struct DirectMap dm;
|
|
dm = sys_mmap_metal(NULL, size, PROT_READ | PROT_WRITE,
|
|
MAP_SHARED_linux | MAP_ANONYMOUS_linux, -1, 0);
|
|
copied_base = dm.addr;
|
|
npassert(copied_base != (void *)-1);
|
|
memcpy(copied_base, (void *)(BANE + IMAGE_BASE_PHYSICAL), size);
|
|
__ape_com_base = copied_base;
|
|
__ape_com_size = size;
|
|
KINFOF("%s @ %p,+%#zx", APE_COM_NAME, copied_base, size);
|
|
}
|
|
}
|
|
|
|
#endif /* __x86_64__ */
|