mirror of
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
63 lines
3.3 KiB
ArmAsm
63 lines
3.3 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 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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#include "libc/macros.h"
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/ Tiny Raw Linux Binary Tutorial
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/
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/ i.e. how to not use cosmopolitan runtimes at all
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/ cosmopolitan basically abstracts this
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/ except for all major platforms
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/
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/ make o//examples/raw-linux-hello.elf
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/ o/examples/raw-linux-hello.elf # about 6kb
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/
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/ Next try C but with fancy build tuning
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/
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/ make -j8 -O \
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/ MODE=tiny \
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/ LDFLAGS+=-s \
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/ CPPFLAGS+=-DIM_FEELING_NAUGHTY \
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/ CPPFLAGS+=-DSUPPORT_VECTOR=0b00000001 \
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/ o/tiny/examples/hello2.elf
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/ o/tiny/examples/hello2.elf # about 8kb
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/
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/ @param rsp is [n,argv₀..argvₙ₋₁,0,envp₀..,0,auxv₀..,0,..]
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/ @see also glibc static binaries which start at 800kb!!!
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/ @see also go where interfaces sadly disempower ld prune
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/ @see also the stl where bad linkage is due to tech debt
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/ @see libc/macros-cpp.inc forthe getstr macro definition
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/ @note libc/elf/elf.lds can be tinier with page align off
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/ @note gas is more powerful than nasm due to rms notation
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/ @noreturn
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_start: mov $12,%rdx # arg no. 3 is length
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getstr "hello world\n",%rsi,%esi # arg no. 2 is memory
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mov $1,%edi # arg no. 1 is stdout
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mov $1,%eax # write()
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syscall # libc/sysv/syscalls.sh
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mov $0,%edi # arg no. 1 is success status
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mov $0xE7,%eax # exit_group()
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syscall # context switch
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0: rep nop # basic blockading
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jmp 0b
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.endfn _start,globl
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.source __FILE__
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.rodata.cst4
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1: .float -1.5
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