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https://github.com/jart/cosmopolitan.git
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f4f4caab0e
I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
229 lines
13 KiB
ArmAsm
229 lines
13 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/dce.h"
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#include "libc/macros.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/madv.h"
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.rodata.cst4
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kCombiningCharsBits:
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.long 114752 * 8
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.endobj kCombiningCharsBits,globl,hidden
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.previous
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.initbss 400,_init_kCombiningChars
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kCombiningChars:
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.zero 114752
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.endobj kCombiningChars,globl,hidden
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.previous
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.init.start 400,_init_kCombiningChars
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push %rsi
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mov $1203,%edx
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call lz4cpy
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mov %rax,%rdi
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pop %rsi
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add $1208,%rsi
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.init.end 400,_init_kCombiningChars
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/ The data below is sparse, as evidenced by:
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/ o/tool/viz/bing.com <o/libc/str/CombiningChars.bin |
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/ o/tool/viz/fold.com
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/ Thus ask the kernel to shrink its physical memory requirements
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/ which might sadly need mmap intermediate step on linux to work
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/ how one would have hoped.
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.text.startup
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kCombiningCharsInit:
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push %rbp
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mov %rsp,%rbp
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.profilable
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ezlea kCombiningChars,di
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mov $114752,%esi
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call mergepages
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pop %rbp
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ret
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.endfn kCombiningCharsInit
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.previous
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.init_array
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.align 8
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kCombiningCharsCtor:
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.quad kCombiningCharsInit
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.endobj kCombiningCharsCtor
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.previous
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/ o/tool/build/lz4toasm.com \
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/ -o o/libc/str/CombiningChars.s \
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/ -s kCombiningChars \
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/ o/libc/str/CombiningChars.bin.lz4
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.initro 400,_init_kCombiningChars
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kCombiningCharsLz4:
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.byte 0x1f,0x00,0x01,0x00,0x4c,0x19,0xff,0x01 #▼ ☺ L↓λ☺
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.byte 0x00,0x0f,0x30,0x00,0x0f,0x2f,0xf8,0x03 # ☼0 ☼/°♥
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.byte 0x22,0x00,0x0d,0x10,0xfe,0x49,0x00,0x23 #. ♪►■I .
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.byte 0xbf,0xb6,0x0e,0x00,0x42,0x3f,0x00,0xff #┐╢♫ B⁇ λ
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.byte 0x17,0x39,0x00,0x00,0x5e,0x00,0x17,0x01 #↨9 ^ ↨☺
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.byte 0x28,0x00,0x92,0xc0,0xbf,0x9f,0x3d,0x00 #( Æ└┐ƒ=
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.byte 0x00,0x00,0x80,0x02,0x86,0x00,0x17,0x07 # Ç☻å ↨•
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.byte 0x1a,0x00,0x13,0xff,0x28,0x00,0x91,0xf8 #→ ‼λ( æ°
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.byte 0x0f,0x20,0x00,0x00,0xc0,0xfb,0xef,0x3e #☼ └√∩>
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.byte 0x0e,0x00,0x1b,0x0e,0x8a,0x00,0x26,0xff #♫ ←♫è &λ
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.byte 0xff,0x37,0x00,0xa2,0x14,0xfe,0x21,0xfe #λ7 ó¶■!■
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.byte 0x00,0x0c,0x00,0x00,0x00,0x02,0x10,0x00 # ♀ ☻►
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.byte 0x40,0x10,0x1e,0x20,0x00,0x10,0x00,0x23 #@►▲ ► .
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.byte 0x40,0x06,0x10,0x00,0x20,0x86,0x39,0x1a #@♠► å9→
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.byte 0x00,0x24,0x23,0x00,0x10,0x00,0x21,0xbe # $. ► !╛
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.byte 0x21,0x20,0x00,0x13,0xfc,0x30,0x00,0x41 #! ‼ⁿ0 A
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.byte 0x90,0x1e,0x20,0x40,0x40,0x00,0x13,0x04 #É▲ @@ ‼♦
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.byte 0x5e,0x00,0x22,0x01,0x20,0x08,0x00,0x13 #^ .☺ ◘ ‼
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.byte 0x11,0x93,0x00,0x38,0xc1,0x3d,0x60,0x60 #◄ô 8┴=``
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.byte 0x00,0x31,0x90,0x40,0x30,0x40,0x00,0x13 # 1É@0@ ‼
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.byte 0x00,0x0f,0x01,0x13,0x18,0x70,0x00,0x06 # ☼☺‼↑p ♠
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.byte 0x9f,0x00,0x27,0x04,0x5c,0x0d,0x00,0x48 #ƒ ‘♦\♪ H
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.byte 0xf2,0x07,0x80,0x7f,0x1d,0x00,0x45,0xf2 #≥•Ç⌂↔ E≥
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.byte 0x1f,0x00,0x3f,0x0d,0x00,0x43,0x03,0x00 #▼ ⁇♪ C♥
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.byte 0x00,0xa0,0x57,0x00,0x50,0xfe,0x7f,0xdf # áW P■⌂▀
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.byte 0xe0,0xff,0x41,0x01,0x28,0x1f,0x40,0x2f #αλA☺(▼@/
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.byte 0x00,0xff,0x00,0xe0,0xfd,0x66,0x00,0x00 # λ α²f
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.byte 0x00,0xc3,0x01,0x00,0x1e,0x00,0x64,0x20 # ├☺ ▲ d
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.byte 0x00,0x20,0xcc,0x01,0x0b,0x0f,0xd2,0x01 # ╠☺♂☼╥☺
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.byte 0x1d,0x06,0x66,0x00,0x1f,0x00,0x01,0x00 #↔♠f ▼ ☺
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.byte 0x62,0x13,0x1c,0x04,0x00,0x26,0x0c,0x00 #b‼∟♦ &♀
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.byte 0x42,0x01,0x52,0xb0,0x3f,0x40,0xfe,0x0f #B☺R░⁇@■☼
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.byte 0xe8,0x00,0x1a,0x78,0x2e,0x00,0x26,0x60 #Φ →x. &`
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.byte 0x00,0x85,0x01,0x04,0x14,0x00,0x4f,0x87 # à☺♦¶ Oç
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.byte 0x01,0x04,0x0e,0x60,0x00,0x07,0x22,0x80 #☺♦♫` •.Ç
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.byte 0x09,0x08,0x00,0x63,0x40,0x7f,0xe5,0x1f #○◘ c@⌂σ▼
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.byte 0xf8,0x9f,0x2a,0x01,0x05,0x8e,0x01,0x11 #°ƒ*☺♣Ä☺◄
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.byte 0x0f,0x06,0x00,0x32,0xd0,0x17,0x04,0x70 #☼♠ 2╨↨♦p
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.byte 0x02,0x01,0xd0,0x01,0x23,0x3c,0x3b,0x32 #☻☺╨☺.<;2
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.byte 0x00,0x13,0xa3,0xde,0x01,0x2f,0xf0,0xcf # ‼ú▐☺/≡╧
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.byte 0x58,0x00,0x00,0x6f,0xf7,0xff,0xfd,0x21 #X o≈λ²!
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.byte 0x10,0x03,0x8c,0x01,0x0c,0x1f,0xfb,0x1f #►♥î☺♀▼√▼
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.byte 0x01,0x2e,0x52,0xf8,0x00,0x00,0x00,0x7c #☺.R° |
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.byte 0x0b,0x00,0x2c,0xdf,0xff,0x62,0x00,0x2f #♂ ,▀λb /
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.byte 0x01,0x00,0x01,0x00,0xff,0x6b,0x1d,0x80 #☺ ☺ λk↔Ç
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.byte 0xff,0x01,0x1c,0x80,0xa2,0x01,0x0f,0x68 #λ☺∟Çó☺☼h
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.byte 0x00,0x32,0x19,0x3c,0x0e,0x00,0x2f,0x06 # 2↓<♫ /♠
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.byte 0x00,0x01,0x00,0xff,0xff,0xff,0xff,0xff # ☺ λλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xb3,0x20,0x80,0xf7,0xf6,0x12,0x28 #λ│ Ç≈÷↕(
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.byte 0xc0,0x00,0xfb,0x12,0x0f,0x33,0x00,0x0c #└ √↕☼3 ♀
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.byte 0x23,0x44,0x08,0xf4,0x11,0x0b,0x18,0x00 #.D◘⌠◄♂↑
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.byte 0x11,0x30,0x60,0x0f,0x11,0x03,0x70,0x0f #◄0`☼◄♥p☼
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.byte 0x62,0xc0,0x3f,0x00,0x00,0x80,0xff,0x4c #b└⁇ ÇλL
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.byte 0x00,0x02,0x10,0x14,0x20,0xc8,0x33,0x06 # ☻►¶ ╚3♠
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.byte 0x00,0x05,0x29,0x13,0x52,0x7e,0x66,0x00 # ♣)‼R~f
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.byte 0x08,0x10,0xf8,0x13,0x02,0x11,0x00,0x21 #◘►°‼☻◄ !
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.byte 0x9d,0xc1,0x43,0x12,0x2f,0x30,0x40,0x7c #¥┴C↕/0@|
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.byte 0x00,0x0a,0x2f,0x20,0x21,0x96,0x0a,0xff # ◙/ !û◙λ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xdb,0x1f,0x40,0x60,0x1f,0x4b,0x2f,0x00 #█▼@`▼K/
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.byte 0x00,0x06,0x1a,0x08,0x1f,0x80,0x3f,0x00 # ♠→◘▼Ç⁇
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.byte 0x0c,0x1f,0x0e,0x7f,0x00,0x2c,0x1f,0x20 #♀▼♫⌂ ,▼
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.byte 0x1d,0x00,0x09,0x0e,0x3e,0x1c,0x2f,0xc0 #↔ ○♫>∟/└
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.byte 0x07,0xdd,0x01,0xbd,0x22,0x6e,0xf0,0x23 #•▌☺╜.n≡.
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.byte 0x1e,0x0f,0x1c,0x00,0x01,0x1f,0x60,0x64 #▲☼∟ ☺▼`d
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.byte 0x00,0x34,0x1f,0xf0,0x44,0x00,0x30,0x05 # 4▼≡D 0♣
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.byte 0xf4,0x20,0x0b,0x18,0x00,0x1a,0x02,0xb1 #⌠ ♂↑ →☻▒
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.byte 0x1e,0x03,0x72,0x1c,0x24,0x78,0x26,0xda #▲♥r∟$x&┌
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.byte 0x01,0x00,0xf0,0x0c,0x33,0x80,0xef,0x1f #☺ ≡♀3Ç∩▼
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.byte 0x2e,0x00,0x13,0x08,0x52,0x0d,0x48,0xc0 #. ‼◘R♪H└
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.byte 0x7f,0x00,0x1e,0x66,0x02,0x1f,0xd3,0xe4 #⌂ ▲f☻▼╙Σ
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.byte 0x02,0x01,0x36,0x80,0xf8,0x07,0xc0,0x20 #☻☺6Ç°•└
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.byte 0x00,0x7e,0x00,0x3f,0xc0,0x1f,0x1f,0xc7 # ~ ⁇└▼▼╟
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.byte 0x02,0x06,0x19,0x5c,0x28,0x03,0x3f,0xf8 #☻♠↓\(♥⁇°
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.byte 0x85,0x0d,0xb1,0x1c,0x0b,0x22,0xb0,0x01 #à♪▒∟♂.░☺
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.byte 0xa3,0x0d,0x04,0x30,0x00,0x19,0xa7,0xde #ú♪♦0 ↓º▐
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.byte 0x00,0x29,0x28,0xbf,0x78,0x20,0x2f,0xbc # )(┐x /╝
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.byte 0x0f,0x38,0x0e,0x0d,0x1f,0xff,0xf4,0x1c #☼8♫♪▼λ⌠∟
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.byte 0x20,0x20,0xf0,0x0c,0x74,0x00,0x11,0xfe # ≡♀t ◄■
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.byte 0xd2,0x02,0x52,0xf8,0x79,0x80,0x00,0x7e #╥☻R°yÇ ~
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.byte 0x4c,0x03,0x3f,0xfc,0x7f,0x03,0x4c,0x00 #L♥⁇ⁿ⌂♥L
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.byte 0x1f,0x17,0x7f,0xb1,0x00,0x5b,0xfc,0xff #▼↨⌂▒ [ⁿλ
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.byte 0xff,0xfc,0x6d,0x20,0x00,0x26,0x7e,0xb4 #λⁿm &~┤
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.byte 0x21,0x00,0x1f,0xa3,0x58,0x00,0x18,0x1f #! ▼úX ↑▼
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.byte 0x18,0x23,0x07,0xff,0xff,0x96,0x2f,0xff #↑.•λλû/λ
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.byte 0x01,0xfb,0x0d,0xff,0xff,0xff,0xff,0xff #☺√♪λλλλλ
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.byte 0xff,0xc9,0x04,0xf0,0x0a,0x1f,0x7f,0x1c #λ╔♦≡◙▼⌂∟
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.byte 0x19,0x70,0x04,0x08,0x00,0x1f,0x07,0x30 #↓p♦◘ ▼•0
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.byte 0x18,0xff,0xff,0xff,0xff,0xff,0xff,0xff #↑λλλλλλλ
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.byte 0xff,0xff,0x96,0x2f,0x60,0x0f,0x5f,0x25 #λλû/`☼_%
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.byte 0xff,0xff,0x87,0x5d,0x03,0xf8,0xff,0xe7 #λλç]♥°λτ
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.byte 0x0f,0x30,0x34,0x05,0x66,0x37,0x0f,0xba #☼04♣f7☼║
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.byte 0x14,0xe2,0x01,0x01,0x00,0x12,0x7f,0x2d #¶Γ☺☺ ↕⌂-
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.byte 0x3a,0x20,0x1f,0x20,0x01,0x26,0x3f,0xf8 #: ▼ ☺&⁇°
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.byte 0xfe,0xff,0xc0,0x00,0x97,0x5f,0x7f,0xff #■λ└ ù_⌂λ
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.byte 0xff,0xf9,0xdb,0x13,0x0e,0x0e,0x1f,0x7f #λ∙█‼♫♫▼⌂
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.byte 0xb9,0x1a,0x24,0x0f,0xda,0x01,0xa9,0x0a #╣→$☼┌☺⌐◙
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.byte 0xf4,0x00,0x3f,0xf0,0x07,0x00,0x01,0x00 #⌠ ⁇≡• ☺
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
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.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff #λλλλλλλλ
|
||
.byte 0xff,0xff,0xff,0xff,0x46,0x57,0x02,0x00 #λλλλFW☻
|
||
.byte 0x00,0x00,0xff,0x01,0x00,0x0c,0x20,0x00 # λ☺ ♀
|
||
.byte 0x1f,0xff,0x01,0x00,0x07,0x50,0xff,0xff #▼λ☺ •Pλλ
|
||
.byte 0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00
|
||
.endobj kCombiningCharsLz4,globl,hidden
|
||
.previous
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