Add a WIP plugin for ELF files
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--
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-- elf.lua: Executable and Linkable Format
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--
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-- Copyright (c) 2017, Přemysl Janouch <p.janouch@gmail.com>
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--
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-- Permission to use, copy, modify, and/or distribute this software for any
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-- purpose with or without fee is hereby granted, provided that the above
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-- copyright notice and this permission notice appear in all copies.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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--
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local detect = function (c)
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return c:read (4) == "\x7FELF"
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end
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local type_table = {
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[0] = "no file type",
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[1] = "relocatable file",
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[2] = "executable file",
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[3] = "shared object file",
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[4] = "core file"
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}
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local machine_table = {
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[0] = "no machine",
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[1] = "AT&T WE 32100",
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[2] = "SPARC",
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[3] = "Intel 386",
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[4] = "Motorola 68000",
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[5] = "Motorola 88000",
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[6] = "Intel MCU",
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[7] = "Intel 80860",
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[8] = "MIPS R3000",
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[9] = "IBM System/370",
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[10] = "MIPS RS3000 Little-endian",
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[15] = "Hewlett-Packard PA-RISC",
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[17] = "Fujitsu VPP500",
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[18] = "Enhanced instruction set SPARC",
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[19] = "Intel 80960",
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[20] = "PowerPC",
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[21] = "PowerPC64",
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[22] = "IBM System/390",
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[23] = "IBM SPU/SPC",
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[36] = "NEC V800",
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[37] = "Fujitsu FR20",
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[38] = "TRW RH-32",
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[39] = "Motorola RCE",
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[40] = "ARM",
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[41] = "DEC Alpha",
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[42] = "Hitachi SH",
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[43] = "SPARC V9",
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[44] = "Siemens TriCore",
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[45] = "Argonaut RISC Core",
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[46] = "Hitachi H8/300",
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[47] = "Hitachi H8/300H",
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[48] = "Hitachi H8S",
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[49] = "Hitachi H8/500",
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[50] = "Intel IA-64 processor architecture",
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[51] = "Stanford MIPS-X",
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[52] = "Motorola ColdFire",
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[53] = "Motorola M68HC12",
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[54] = "Fujitsu MMA Multimedia Accelerator",
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[55] = "Siemens PCP",
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[56] = "Sony nCPU embedded RISC processor",
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[57] = "Denso NDR1 microprocessor",
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[58] = "Motorola Star*Core processor",
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[59] = "Toyota ME16 processor",
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[60] = "STMicroelectronics ST100 processor",
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[61] = "Advanced Logic Corp. TinyJ embedded processor family",
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[62] = "AMD x86-64 architecture",
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[63] = "Sony DSP Processor",
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[64] = "Digital Equipment Corp. PDP-10",
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[65] = "Digital Equipment Corp. PDP-11",
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[66] = "Siemens FX66 microcontroller",
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[67] = "STMicroelectronics ST9+ 8/16 bit microcontroller",
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[68] = "STMicroelectronics ST7 8-bit microcontroller",
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[69] = "Motorola MC68HC16 Microcontroller",
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[70] = "Motorola MC68HC11 Microcontroller",
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[71] = "Motorola MC68HC08 Microcontroller",
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[72] = "Motorola MC68HC05 Microcontroller",
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[73] = "Silicon Graphics SVx",
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[74] = "STMicroelectronics ST19 8-bit microcontroller",
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[75] = "Digital VAX",
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[76] = "Axis Communications 32-bit embedded processor",
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[77] = "Infineon Technologies 32-bit embedded processor",
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[78] = "Element 14 64-bit DSP Processor",
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[79] = "LSI Logic 16-bit DSP Processor",
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[80] = "Donald Knuth's educational 64-bit processor",
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[81] = "Harvard University machine-independent object files",
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[82] = "SiTera Prism",
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[83] = "Atmel AVR 8-bit microcontroller",
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[84] = "Fujitsu FR30",
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[85] = "Mitsubishi D10V",
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[86] = "Mitsubishi D30V",
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[87] = "NEC v850",
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[88] = "Mitsubishi M32R",
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[89] = "Matsushita MN10300",
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[90] = "Matsushita MN10200",
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[91] = "picoJava",
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[92] = "OpenRISC 32-bit embedded processor",
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[93] = "ARC International ARCompact processor",
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[94] = "Tensilica Xtensa Architecture",
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[95] = "Alphamosaic VideoCore processor",
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[96] = "Thompson Multimedia General Purpose Processor",
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[97] = "National Semiconductor 32000 series",
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[98] = "Tenor Network TPC processor",
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[99] = "Trebia SNP 1000 processor",
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[100] = "STMicroelectronics (www.st.com) ST200",
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[101] = "Ubicom IP2xxx microcontroller family",
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[102] = "MAX Processor",
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[103] = "National Semiconductor CompactRISC microprocessor",
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[104] = "Fujitsu F2MC16",
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[105] = "Texas Instruments embedded microcontroller msp430",
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[106] = "Analog Devices Blackfin (DSP) processor",
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[107] = "S1C33 Family of Seiko Epson processors",
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[108] = "Sharp embedded microprocessor",
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[109] = "Arca RISC Microprocessor",
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[110] = "microprocessor series from PKU-Unity Ltd." ..
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" and MPRC of Peking University",
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[111] = "eXcess: 16/32/64-bit configurable embedded CPU",
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[112] = "Icera Semiconductor Inc. Deep Execution Processor",
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[113] = "Altera Nios II soft-core processor",
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[114] = "National Semiconductor CompactRISC CRX",
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[115] = "Motorola XGATE embedded processor",
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[116] = "Infineon C16x/XC16x processor",
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[117] = "Renesas M16C series microprocessors",
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[118] = "Microchip Technology dsPIC30F Digital Signal Controller",
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[119] = "Freescale Communication Engine RISC core",
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[120] = "Renesas M32C series microprocessors",
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[131] = "Altium TSK3000 core",
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[132] = "Freescale RS08 embedded processor",
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[133] = "Analog Devices SHARC family of 32-bit DSP processors",
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[134] = "Cyan Technology eCOG2 microprocessor",
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[135] = "Sunplus S+core7 RISC processor",
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[136] = "New Japan Radio (NJR) 24-bit DSP Processor",
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[137] = "Broadcom VideoCore III processor",
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[138] = "RISC processor for Lattice FPGA architecture",
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[139] = "Seiko Epson C17 family",
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[140] = "The Texas Instruments TMS320C6000 DSP family",
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[141] = "The Texas Instruments TMS320C2000 DSP family",
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[142] = "The Texas Instruments TMS320C55x DSP family",
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[160] = "STMicroelectronics 64bit VLIW Data Signal Processor",
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[161] = "Cypress M8C microprocessor",
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[162] = "Renesas R32C series microprocessors",
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[163] = "NXP Semiconductors TriMedia architecture family",
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[164] = "Qualcomm Hexagon processor",
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[165] = "Intel 8051 and variants",
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[166] = "STMicroelectronics STxP7x family of configurable" ..
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" and extensible RISC processors",
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[167] = "Andes Technology compact code size embedded RISC processor family",
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[168] = "Cyan Technology eCOG1X family",
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[168] = "Cyan Technology eCOG1X family",
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[169] = "Dallas Semiconductor MAXQ30 Core Micro-controllers",
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[170] = "New Japan Radio (NJR) 16-bit DSP Processor",
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[171] = "M2000 Reconfigurable RISC Microprocessor",
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[172] = "Cray Inc. NV2 vector architecture",
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[173] = "Renesas RX family",
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[174] = "Imagination Technologies META processor architecture",
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[175] = "MCST Elbrus general purpose hardware architecture",
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[176] = "Cyan Technology eCOG16 family",
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[177] = "National Semiconductor CompactRISC CR16 16-bit microprocessor",
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[178] = "Freescale Extended Time Processing Unit",
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[179] = "Infineon Technologies SLE9X core",
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[180] = "Intel L10M",
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[181] = "Intel K10M",
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[183] = "ARM AArch64",
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[185] = "Atmel Corporation 32-bit microprocessor family",
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[186] = "STMicroeletronics STM8 8-bit microcontroller",
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[187] = "Tilera TILE64 multicore architecture family",
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[188] = "Tilera TILEPro multicore architecture family",
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[190] = "NVIDIA CUDA architecture",
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[191] = "Tilera TILE-Gx multicore architecture family",
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[192] = "CloudShield architecture family",
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[193] = "KIPO-KAIST Core-A 1st generation processor family",
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[194] = "KIPO-KAIST Core-A 2nd generation processor family",
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[195] = "Synopsys ARCompact V2",
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[196] = "Open8 8-bit RISC soft processor core",
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[197] = "Renesas RL78 family",
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[198] = "Broadcom VideoCore V processor",
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[199] = "Renesas 78KOR family",
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[200] = "Freescale 56800EX Digital Signal Controller (DSC)",
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[201] = "Beyond BA1 CPU architecture",
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[202] = "Beyond BA2 CPU architecture",
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[203] = "XMOS xCORE processor family",
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[204] = "Microchip 8-bit PIC(r) family",
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[205] = "reserved by Intel",
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[206] = "reserved by Intel",
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[207] = "reserved by Intel",
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[208] = "reserved by Intel",
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[209] = "reserved by Intel",
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[210] = "KM211 KM32 32-bit processor",
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[211] = "KM211 KMX32 32-bit processor",
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[212] = "KM211 KMX16 16-bit processor",
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[213] = "KM211 KMX8 8-bit processor",
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[214] = "KM211 KVARC processor",
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[215] = "Paneve CDP architecture family",
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[216] = "Cognitive Smart Memory Processor",
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[217] = "iCelero CoolEngine",
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[218] = "Nanoradio Optimized RISC",
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[219] = "CSR Kalimba architecture family",
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[224] = "AMD GPU architecture",
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[244] = "Lanai 32-bit processor",
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[247] = "Linux kernel bpf virtual machine"
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}
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local decode32 = function (c)
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-- TODO: like the 64-bit version, maybe try to merge the code somehow
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end
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local decode64 = function (c)
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local type = c:u16 ("type of file: %s", function (u16)
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name = type_table[u16]
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if name then return name end
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return "unknown: %d", u16
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end)
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local machine = c:u16 ("required architecture: %s", function (u16)
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name = machine_table[u16]
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if name then return name end
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return "unknown: %d", u16
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end)
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local version = c:u32 ("version: %d")
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local entry = c:u64 ("program entry address: %#x")
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local ph_offset = c:u64 ("program header table offset: %#x")
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local sh_offset = c:u64 ("section header table offset: %#x")
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local flags = c:u32 ("processor-specific flags: %#x")
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local eh_size = c:u16 ("ELF header size: %d")
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local ph_entry_size = c:u16 ("program header size: %d")
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local ph_number = c:u16 ("program header count: %d")
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local sh_entry_size = c:u16 ("section header size: %d")
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local sh_number = c:u16 ("section header count: %d")
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local sh_string_index = c:u16 ("section header index for strings: %d")
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-- TODO: decode all sections as well, see man 5 elf,
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-- /usr/include/elf.h and /usr/include/llvm/Support/ELF.h
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end
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local abi_table = {
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[0] = "UNIX System V ABI",
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[1] = "HP-UX operating system",
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[2] = "NetBSD",
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[3] = "GNU/Linux",
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[4] = "GNU/Hurd",
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[6] = "Solaris",
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[7] = "AIX",
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[8] = "IRIX",
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[9] = "FreeBSD",
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[10] = "TRU64 UNIX",
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[11] = "Novell Modesto",
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[12] = "OpenBSD",
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[13] = "OpenVMS",
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[14] = "Hewlett-Packard Non-Stop Kernel",
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[15] = "AROS",
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[16] = "FenixOS",
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[17] = "Nuxi CloudABI",
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[64] = "Bare-metal TMS320C6000",
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[64] = "AMD HSA runtime",
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[65] = "Linux TMS320C6000",
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[97] = "ARM",
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[255] = "Standalone (embedded) application"
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}
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local decode = function (c)
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if not detect (c ()) then error ("not an ELF file") end
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local p = c.position, c:read (4)
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c (p, p + 3):mark ("ELF magic")
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local class = c:u8 ("ELF class: %s", function (u8)
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if u8 == 1 then return "32-bit" end
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if u8 == 2 then return "64-bit" end
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return "invalid: %d", u8
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end)
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local data = c:u8 ("ELF data: %s", function (u8)
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if u8 == 1 then
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c.endianity = "le"
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return "little-endian"
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end
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if u8 == 2 then
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c.endianity = "be"
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return "big-endian"
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end
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return "invalid: %d", u8
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end)
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local version = c:u8 ("ELF version: %d")
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local abi = c:u8 ("OS ABI: %s", function (u8)
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name = abi_table[u8]
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if name then return name end
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return "unknown: %d", u8
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end)
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local abi_version = c:u8 ("OS ABI version: %d")
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-- The padding is reserved, no big sense in marking it
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local padding = c:read (7)
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-- We cannot decode anything further as we don't know how
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if data ~= 1 and data ~= 2 then return end
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if class == 1 then decode32 (c) end
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if class == 2 then decode64 (c) end
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end
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hex.register { type="elf", detect=detect, decode=decode }
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