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https://github.com/jart/cosmopolitan.git
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416fd86676
- Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader - Whipped up a webserver named redbean. It services 150k requests per second on a single core. Bundling assets inside zip enables extremely fast serving for two reasons. The first is that zip central directory lookups go faster than stat() system calls. The second is that both zip and gzip content-encoding use DEFLATE, therefore, compressed responses can be served via the sendfile() system call which does an in-kernel copy directly from the zip executable structure. Also note that red bean zip executables can be deployed easily to all platforms, since these native executables work on Linux, Mac, BSD, and Windows. - Address sanitizer now works very well
76 lines
3.5 KiB
C
76 lines
3.5 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 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#define ShouldUseMsabiAttribute() 1
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#include "libc/dce.h"
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#include "libc/nt/files.h"
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#include "libc/nt/runtime.h"
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#include "libc/runtime/missioncritical.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/fileno.h"
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#include "libc/sysv/consts/nr.h"
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static privileged void __print$nt(const void *data, size_t len) {
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int64_t hand;
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uint32_t wrote;
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char xmm[256] aligned(16);
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savexmm(&xmm[128]);
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hand = __imp_GetStdHandle(kNtStdErrorHandle);
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__imp_WriteFile(hand, data, len, &wrote, NULL);
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__imp_FlushFileBuffers(hand);
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loadxmm(&xmm[128]);
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}
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/**
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* Prints string, by any means necessary.
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*
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* This function offers a subset of write(STDERR_FILENO) functionality.
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* It's designed to work even when the runtime hasn't initialized, e.g.
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* before _init() gets called.
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*
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* @param len can be computed w/ tinystrlen()
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* @clob nothing except flags
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* @see PRINT()
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*/
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privileged void __print(const void *data, size_t len) {
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int64_t ax, ordinal;
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if (NT_HAVE_IMPORT(__imp_WriteFile)) {
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__print$nt(data, len);
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} else {
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ordinal = __NR_write > 0 ? __NR_write : IsXnu() ? 0x2000004 : 4;
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asm volatile("syscall"
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: "=a"(ax)
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: "0"(ordinal), "D"(STDERR_FILENO), "S"(data), "d"(len)
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: "rcx", "r11", "memory", "cc");
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if (ax == -1 && !hostos && !__NR_write) {
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asm volatile("syscall"
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: "=a"(ax)
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: "0"(ordinal), "D"(STDERR_FILENO), "S"(data), "d"(len)
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: "rcx", "r11", "memory", "cc");
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}
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}
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RESTORE_RBX();
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}
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privileged void __print_string(const char *s) {
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size_t n = 0;
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while (s[n]) ++n;
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__print(s, n);
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}
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