In your case it's arm64 assembly (formally the A64 instruction set) as outlined in the ARMv8 Reference Manual. You almost certainly get this because Hopper fails to properly decompile the instruction. Wikipedia might serve as an introduction. This plugin can be referenced from the command line tool using 8x300 as its identifer.ĬPU backends currently supported: 8x300, 8x305. It's inline assembly, equivalent to the asm keyword in C. This CPU core plugin allows you to disassemble 8x300 code, used in early signal processing equipment in the 70s and early 80s. This can be changed via the usual Hopper CPU mode setting facilities. The default CPU mode has both accumulator and index registers set to 8 bits each.Detect emulation bit being set or cleared.Properly relocate files in the entire address space with BSS sections around data segments.Automatically add I/O register labels for MELPS 7700.Add support for more 65816 variants if any are found in the wild.This plugin can be referenced from the command line tool using 65816 as its identifer.ĬPU backends currently supported: 65816, MELPS 7700. This CPU core plugin allows you to disassemble 65816/65802 code, used in some of home computers of the 80s, and early 90s, for industrial automation or other specialised tasks where a microcontroller is needed, and in the Super Nintendo/Super Famicom games console. Rebuilding the test binaries requires having the AS Macroassembler command line tools available in your PATH variable.The MOS 6510 is used in the Commodore C64 microcomputer, where all sort of trickery is commonly used. Undocumented opcodes are supported only in the MOS 6510 core, as it is quite unlikely that people used them on general applications.Have a customised memory map with named registers for each chip (needs BSS support first).being able to increment and decrement the virtual stack pointer when encountering PHx or PLx instructions). A way to properly model stack changes (ie.Alternate syntax for extended opcodes (i.e.Properly relocate files in the 64k address space with BSS sections around data segments.Add support for more 6502 variants if any are found in the wild.Attempt to reject files too big for address-space reduced chip variants.Properly handle the extra registers present in the R65C19 variant.Negation for hexadecimal, decimal, and octal types.This CPU core plugin allows you to disassemble 6502/65C02 code, used in loads of home computers of the 70s, 80s, and early 90s, and in industrial automation or other specialised tasks where an MCU is needed. In the case of your disassembly, the first part has been elided (left out as being an uninteresting housekeeping task) by the disassembler, but the second to last part (which undoes the first part) has not.Plugins currently available in the repository: You might see something different due to using a different version of gcc or a different target. So what we have here is code to set up a stack frame (address 0-1), the assignment you have (4), setting up the return value (b), tearing down the frame (10) and then returning (11). So you'll get a much better idea of what is going on by using an actual disassembler to look at the actual disassembly code: $ gcc -c simple.cĤ: c7 45 fc 05 00 00 00 movl $0x5,-0x4(%rbp) In this case it looks like it has has elided the stack frame setup (the function prolog), but not the cleanup (function epilog). Looks like it is doing a particularly poor job of producing "disassembly pseudocode" (whatever that is - is it a disassembler or a decompliler? Can't decide)
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