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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
265 lines
9.9 KiB
C
265 lines
9.9 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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#include "libc/elf/def.h"
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#include "libc/elf/elf.h"
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#include "tool/decode/lib/elfidnames.h"
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const struct IdName kElfTypeNames[] = {
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{ET_NONE, "ET_NONE"},
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{ET_REL, "ET_REL"},
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{ET_EXEC, "ET_EXEC"},
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{ET_DYN, "ET_DYN"},
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{ET_CORE, "ET_CORE"},
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{ET_NUM, "ET_NUM"},
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{ET_LOOS, "ET_LOOS"},
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{ET_HIOS, "ET_HIOS"},
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{ET_LOPROC, "ET_LOPROC"},
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{ET_HIPROC, "ET_HIPROC"},
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{0, 0},
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};
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const struct IdName kElfOsabiNames[] = {
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{ELFOSABI_NONE, "ELFOSABI_NONE"},
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{ELFOSABI_SYSV, "ELFOSABI_SYSV"},
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{ELFOSABI_HPUX, "ELFOSABI_HPUX"},
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{ELFOSABI_NETBSD, "ELFOSABI_NETBSD"},
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{ELFOSABI_GNU, "ELFOSABI_GNU"},
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{ELFOSABI_LINUX, "ELFOSABI_LINUX"},
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{ELFOSABI_SOLARIS, "ELFOSABI_SOLARIS"},
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{ELFOSABI_AIX, "ELFOSABI_AIX"},
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{ELFOSABI_IRIX, "ELFOSABI_IRIX"},
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{ELFOSABI_FREEBSD, "ELFOSABI_FREEBSD"},
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{ELFOSABI_TRU64, "ELFOSABI_TRU64"},
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{ELFOSABI_MODESTO, "ELFOSABI_MODESTO"},
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{ELFOSABI_OPENBSD, "ELFOSABI_OPENBSD"},
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{ELFOSABI_ARM, "ELFOSABI_ARM"},
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{ELFOSABI_STANDALONE, "ELFOSABI_STANDALONE"},
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{0, 0},
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};
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const struct IdName kElfClassNames[] = {
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{ELFCLASSNONE, "ELFCLASSNONE"},
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{ELFCLASS32, "ELFCLASS32"},
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{ELFCLASS64, "ELFCLASS64"},
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{0, 0},
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};
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const struct IdName kElfDataNames[] = {
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{ELFDATANONE, "ELFDATANONE"},
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{ELFDATA2LSB, "ELFDATA2LSB"},
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{ELFDATA2MSB, "ELFDATA2MSB"},
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{0, 0},
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};
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const struct IdName kElfMachineNames[] = {
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{EM_M32, "EM_M32"},
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{EM_386, "EM_386"},
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{EM_S390, "EM_S390"},
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{EM_ARM, "EM_ARM"},
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{EM_NEXGEN32E, "EM_NEXGEN32E"},
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{EM_PDP11, "EM_PDP11"},
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{EM_CRAYNV2, "EM_CRAYNV2"},
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{EM_L10M, "EM_L10M"},
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{EM_K10M, "EM_K10M"},
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{EM_AARCH64, "EM_AARCH64"},
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{EM_CUDA, "EM_CUDA"},
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{EM_Z80, "EM_Z80"},
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{EM_RISCV, "EM_RISCV"},
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{EM_BPF, "EM_BPF"},
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{0, 0},
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};
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const struct IdName kElfSegmentTypeNames[] = {
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{PT_NULL, "PT_NULL"}, /* Program header table entry unused */
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{PT_LOAD, "PT_LOAD"}, /* Loadable program segment */
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{PT_DYNAMIC, "PT_DYNAMIC"}, /* Dynamic linking information */
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{PT_INTERP, "PT_INTERP"}, /* Program interpreter */
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{PT_NOTE, "PT_NOTE"}, /* Auxiliary information */
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{PT_SHLIB, "PT_SHLIB"}, /* Reserved */
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{PT_PHDR, "PT_PHDR"}, /* Entry for header table itself */
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{PT_TLS, "PT_TLS"}, /* Thread-local storage segment */
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{PT_NUM, "PT_NUM"}, /* Number of defined types */
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{PT_LOOS, "PT_LOOS"}, /* Start of OS-specific */
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{PT_GNU_EH_FRAME, "PT_GNU_EH_FRAME"}, /* GCC .eh_frame_hdr segment */
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{PT_GNU_STACK, "PT_GNU_STACK"}, /* Indicates stack executability */
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{PT_GNU_RELRO, "PT_GNU_RELRO"}, /* Read-only after relocation */
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{PT_LOSUNW, "PT_LOSUNW"}, /* <Reserved for Sun Micrososystems> */
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{PT_SUNWBSS, "PT_SUNWBSS"}, /* Sun Specific segment */
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{PT_SUNWSTACK, "PT_SUNWSTACK"}, /* Stack segment */
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{PT_HISUNW, "PT_HISUNW"}, /* </Reserved for Sun Micrososystems> */
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{PT_HIOS, "PT_HIOS"}, /* End of OS-specific */
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{PT_LOPROC, "PT_LOPROC"}, /* Start of processor-specific */
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{PT_HIPROC, "PT_HIPROC"}, /* End of processor-specific */
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{0, 0},
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};
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const struct IdName kElfSectionTypeNames[] = {
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{SHT_NULL, "SHT_NULL"},
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{SHT_PROGBITS, "SHT_PROGBITS"},
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{SHT_SYMTAB, "SHT_SYMTAB"},
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{SHT_STRTAB, "SHT_STRTAB"},
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{SHT_RELA, "SHT_RELA"},
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{SHT_HASH, "SHT_HASH"},
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{SHT_DYNAMIC, "SHT_DYNAMIC"},
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{SHT_NOTE, "SHT_NOTE"},
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{SHT_NOBITS, "SHT_NOBITS"},
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{SHT_REL, "SHT_REL"},
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{SHT_SHLIB, "SHT_SHLIB"},
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{SHT_DYNSYM, "SHT_DYNSYM"},
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{SHT_INIT_ARRAY, "SHT_INIT_ARRAY"},
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{SHT_FINI_ARRAY, "SHT_FINI_ARRAY"},
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{SHT_PREINIT_ARRAY, "SHT_PREINIT_ARRAY"},
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{SHT_GROUP, "SHT_GROUP"},
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{SHT_SYMTAB_SHNDX, "SHT_SYMTAB_SHNDX"},
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{SHT_NUM, "SHT_NUM"},
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{SHT_LOOS, "SHT_LOOS"},
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{SHT_GNU_ATTRIBUTES, "SHT_GNU_ATTRIBUTES"},
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{SHT_GNU_HASH, "SHT_GNU_HASH"},
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{SHT_GNU_LIBLIST, "SHT_GNU_LIBLIST"},
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{SHT_CHECKSUM, "SHT_CHECKSUM"},
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{SHT_LOSUNW, "SHT_LOSUNW"},
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{SHT_SUNW_move, "SHT_SUNW_move"},
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{SHT_SUNW_COMDAT, "SHT_SUNW_COMDAT"},
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{SHT_SUNW_syminfo, "SHT_SUNW_syminfo"},
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{SHT_GNU_verdef, "SHT_GNU_verdef"},
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{SHT_GNU_verneed, "SHT_GNU_verneed"},
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{SHT_GNU_versym, "SHT_GNU_versym"},
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{SHT_HISUNW, "SHT_HISUNW"},
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{SHT_HIOS, "SHT_HIOS"},
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{SHT_LOPROC, "SHT_LOPROC"},
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{SHT_HIPROC, "SHT_HIPROC"},
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{SHT_LOUSER, "SHT_LOUSER"},
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{SHT_HIUSER, "SHT_HIUSER"},
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{0, 0},
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};
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const struct IdName kElfSegmentFlagNames[] = {
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{PF_X, "PF_X"},
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{PF_W, "PF_W"},
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{PF_R, "PF_R"},
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{PF_MASKOS, "PF_MASKOS"},
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{PF_MASKPROC, "PF_MASKPROC"},
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{0, 0},
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};
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const struct IdName kElfSectionFlagNames[] = {
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{SHF_WRITE, "SHF_WRITE"},
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{SHF_ALLOC, "SHF_ALLOC"},
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{SHF_EXECINSTR, "SHF_EXECINSTR"},
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{SHF_MERGE, "SHF_MERGE"},
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{SHF_STRINGS, "SHF_STRINGS"},
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{SHF_INFO_LINK, "SHF_INFO_LINK"},
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{SHF_LINK_ORDER, "SHF_LINK_ORDER"},
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{SHF_OS_NONCONFORMING, "SHF_OS_NONCONFORMING"},
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{SHF_GROUP, "SHF_GROUP"},
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{SHF_TLS, "SHF_TLS"},
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{SHF_COMPRESSED, "SHF_COMPRESSED"},
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{SHF_MASKOS, "SHF_MASKOS"},
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{SHF_MASKPROC, "SHF_MASKPROC"},
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{SHF_ORDERED, "SHF_ORDERED"},
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{SHF_EXCLUDE, "SHF_EXCLUDE"},
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{0, 0},
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};
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const struct IdName kElfSymbolTypeNames[] = {
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{STT_NOTYPE, "STT_NOTYPE"}, {STT_OBJECT, "STT_OBJECT"},
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{STT_FUNC, "STT_FUNC"}, {STT_SECTION, "STT_SECTION"},
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{STT_FILE, "STT_FILE"}, {STT_COMMON, "STT_COMMON"},
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{STT_TLS, "STT_TLS"}, {STT_NUM, "STT_NUM"},
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{STT_LOOS, "STT_LOOS"}, {STT_GNU_IFUNC, "STT_GNU_IFUNC"},
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{STT_HIOS, "STT_HIOS"}, {STT_LOPROC, "STT_LOPROC"},
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{STT_HIPROC, "STT_HIPROC"}, {0, 0},
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};
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const struct IdName kElfSymbolBindNames[] = {
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{STB_LOCAL, "STB_LOCAL"}, {STB_GLOBAL, "STB_GLOBAL"},
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{STB_WEAK, "STB_WEAK"}, {STB_NUM, "STB_NUM"},
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{STB_LOOS, "STB_LOOS"}, {STB_GNU_UNIQUE, "STB_GNU_UNIQUE"},
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{STB_HIOS, "STB_HIOS"}, {STB_LOPROC, "STB_LOPROC"},
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{STB_HIPROC, "STB_HIPROC"}, {0, 0},
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};
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const struct IdName kElfSymbolVisibilityNames[] = {
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{STV_DEFAULT, "STV_DEFAULT"},
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{STV_INTERNAL, "STV_INTERNAL"},
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{STV_HIDDEN, "STV_HIDDEN"},
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{STV_PROTECTED, "STV_PROTECTED"},
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{0, 0},
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};
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const struct IdName kElfSpecialSectionNames[] = {
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{SHN_UNDEF, "SHN_UNDEF"},
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{SHN_LORESERVE, "SHN_LORESERVE"},
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{SHN_LOPROC, "SHN_LOPROC"},
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{SHN_BEFORE, "SHN_BEFORE"},
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{SHN_AFTER, "SHN_AFTER"},
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{SHN_HIPROC, "SHN_HIPROC"},
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{SHN_LOOS, "SHN_LOOS"},
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{SHN_HIOS, "SHN_HIOS"},
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{SHN_ABS, "SHN_ABS"},
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{SHN_COMMON, "SHN_COMMON"},
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{SHN_XINDEX, "SHN_XINDEX"},
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{SHN_HIRESERVE, "SHN_HIRESERVE"},
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{0, 0},
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};
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const struct IdName kElfNexgen32eRelocationNames[] = {
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{R_X86_64_64, "64"},
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{R_X86_64_PC32, "PC32"},
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{R_X86_64_GOT32, "GOT32"},
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{R_X86_64_PLT32, "PLT32"},
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{R_X86_64_COPY, "COPY"},
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{R_X86_64_GLOB_DAT, "GLOB_DAT"},
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{R_X86_64_JUMP_SLOT, "JUMP_SLOT"},
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{R_X86_64_RELATIVE, "RELATIVE"},
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{R_X86_64_GOTPCREL, "GOTPCREL"},
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{R_X86_64_32, "32"},
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{R_X86_64_32S, "32S"},
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{R_X86_64_16, "16"},
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{R_X86_64_PC16, "PC16"},
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{R_X86_64_8, "8"},
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{R_X86_64_PC8, "PC8"},
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{R_X86_64_DTPMOD64, "DTPMOD64"},
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{R_X86_64_DTPOFF64, "DTPOFF64"},
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{R_X86_64_TPOFF64, "TPOFF64"},
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{R_X86_64_TLSGD, "TLSGD"},
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{R_X86_64_TLSLD, "TLSLD"},
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{R_X86_64_DTPOFF32, "DTPOFF32"},
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{R_X86_64_GOTTPOFF, "GOTTPOFF"},
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{R_X86_64_TPOFF32, "TPOFF32"},
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{R_X86_64_PC64, "PC64"},
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{R_X86_64_GOTOFF64, "GOTOFF64"},
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{R_X86_64_GOTPC32, "GOTPC32"},
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{R_X86_64_GOT64, "GOT64"},
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{R_X86_64_GOTPCREL64, "GOTPCREL64"},
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{R_X86_64_GOTPC64, "GOTPC64"},
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{R_X86_64_GOTPLT64, "GOTPLT64"},
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{R_X86_64_PLTOFF64, "PLTOFF64"},
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{R_X86_64_SIZE32, "SIZE32"},
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{R_X86_64_SIZE64, "SIZE64"},
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{R_X86_64_GOTPC32_TLSDESC, "GOTPC32_TLSDESC"},
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{R_X86_64_TLSDESC_CALL, "TLSDESC_CALL"},
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{R_X86_64_TLSDESC, "TLSDESC"},
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{R_X86_64_IRELATIVE, "IRELATIVE"},
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{R_X86_64_RELATIVE64, "RELATIVE64"},
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{R_X86_64_GOTPCRELX, "GOTPCRELX"},
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{R_X86_64_REX_GOTPCRELX, "REX_GOTPCRELX"},
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{0, 0},
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};
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